Technical field
[0001]
　The present disclosure, the terminal apparatus, base station apparatus, communication method, and a program.
BACKGROUND
[0002]
　Cellular mobile communication radio access scheme and a radio network (hereinafter, "Long Term Evolution (LTE)", "LTE-Advanced (LTE-A)", "LTE-Advanced Pro (LTE-A Pro)", "New Radio ( . that NR) ", also referred to as" New Radio Access Technology (NRAT) "," Evolved Universal Terrestrial Radio Access (EUTRA) ", or" Further EUTRA (FEUTRA) ") is the third generation partnership project (3rd generation partnership project: It has been studied in 3GPP). In the following description, LTE includes LTE-A, LTE-A Pro, and the EUTRA, NR is NRAT, and a FEUTRA. In LTE and NR, the base station apparatus (base station) eNodeB (an evolved NodeB), the terminal apparatus (mobile station, the mobile station apparatus, terminal) also called UE (User Equipment). LTE and NR are cellular communication system providing a plurality of areas in which the base station apparatus covers the cellular. Single base station apparatus may manage a plurality of cells.
[0003]
　NR is the next generation radio access scheme for LTE, and LTE are different RAT (Radio Access Technology). NR is, eMBB (Enhanced mobile broadband), an access technique that can accommodate a variety of use cases including mMTC (Massive machine type communications) and URLLC (Ultra reliable and low latency communications). NR is usage scenarios in those use cases, requirements, and is considered with the aim of corresponding technical frameworks like deployment scenario. Scenario details and requirements of NR, is disclosed in Non-Patent Document 1.
CITATION
Non-patent literature
[0004]
非特許文献1 : 3rd　Generation　Partnership　Project;　Technical　Specification　Group　Radio　Access　Network;　Study　on　Scenarios　and　Requirements　for　Next　Generation　Access　Technologies;　(Release　14),　3GPP　TR　38.913　V0.2.0　(2016-02).
Summary of the Invention
Problems that the Invention is to Solve
[0005]
　In the radio access technology, the parameters (physical parameters), such as the definition of a radio frame that maps the transmission signal, the downlink physical channels and uplink physical channels such as the subcarrier interval and the symbol length is flexibly designed in accordance with the use case it is preferred that the. However, in the radio access technology, when the base station apparatus changes the design flexibility, the terminal implements all communication functions of the radio system the base station apparatus can set and defined for the communication function It must meet the test requirements. As a result, flexible parameter design of radio access technologies, the cost is increased terminal.
[0006]
　In the present disclosure, in a communication system in which the base station apparatus and the terminal apparatus to communicate, regardless of the differences in the design in accordance with the use cases, capable of providing a wireless access technology in a more preferred embodiment, the terminal device, the base station apparatus, proposes a communication method, and a program.
Means for Solving the Problems
[0007]
　According to the present disclosure, a communication unit that performs wireless communication, the control information regarding the communication method supported by, and a control unit for controlling so as to be transmitted to the external device via the wireless communication, wherein the control unit a first communication scheme, when supporting a different second communication method with the first communication method, supporting dual connectivity based on the first communication method and the second communication method associating a parameter indicating whether the control information, the terminal device is provided.
[0008]
　Further, according to the present disclosure, a communication unit that performs wireless communication, the control information regarding the communication system to which the terminal support, and a control unit for controlling so as to be acquired from the terminal apparatus via the wireless communication wherein the control information, the terminal device, when the first communication method, from the first communication scheme to support a different second communication system, the terminal device, the first communication includes parameters indicating whether to support dual connectivity based on the method and the second communication method, the base station apparatus is provided.
[0009]
　Further, according to the present disclosure, and performs wireless communication, the processor, the control information about the communication method supported by, and controlling so as to be transmitted to the external device via the wireless communication, the first communication It shows the scheme, when supporting a different second communication method with the first communication method, whether to support dual connectivity based on said first communication method and the second communication method includes associating a parameter to the control information, the communication method is provided.
[0010]
　Further, according to the present disclosure, and that the carrying out the wireless communication, the processor, the control information about the communication system to which the terminal support controls as obtained from the terminal device via the wireless communication, wherein the said control information, the terminal device, the first communication system, when supporting a different second communication method with the first communication method, is the terminal device, the first includes parameters indicating whether to support dual connectivity based on said communication method a second communication system, a communication method is provided.
[0011]
　Further, according to the present disclosure, the computer, and performs wireless communication, the control information about the communication mode supporting, and controlling so as to be transmitted to the external device via the wireless communication, the first communication It shows the scheme, when supporting a different second communication method with the first communication method, whether to support dual connectivity based on said first communication method and the second communication method and associating a parameter to the control information, thereby executing the program is provided.
[0012]
　Further, according to the present disclosure, the computer, and performs wireless communication, and the control information related to the communication system to which the terminal support controls as obtained from the terminal device via the wireless communication, was performed, the control information, when the terminal device, the first communication method, from the first communication scheme to support a different second communication system, the terminal device, the first includes parameters indicating whether to support dual connectivity based of the communication system and the second communication method, a program is provided.
Effect of the invention
[0013]
　According to the present disclosure described above, in a radio communication system having a base station apparatus and the terminal apparatus to communicate, regardless of the differences in the design in accordance with the use cases, to provide a wireless access technology in a more preferred embodiment possible, the terminal apparatus, base station apparatus, communication method, and program are provided.
[0014]
　Incidentally, the above effect is not necessarily restrictive, with the above effects, or instead of the above effects, any effects shown herein, or other effects that may be grasped from the description, it may be achieved.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015]
Is a diagram illustrating an example of setting of the component carrier in an embodiment of FIG. 1 the present disclosure.
2 is a diagram showing an example of a setting of a component carrier in the same embodiment.
3 is a diagram showing an example of an LTE downlink subframe in the same embodiment.
4 is a diagram showing an example of an LTE uplink sub-frame in the same embodiment.
Is a diagram illustrating an example set of parameters related to the transmission signal in FIG. 5] NR cell.
6 is a diagram showing an example of a downlink subframe of NR in the same embodiment.
7 is a diagram showing an example of an uplink subframe of NR in the same embodiment.
8 is a schematic block diagram showing a configuration of a base station apparatus of the embodiment.
9 is a schematic block diagram showing a configuration of a terminal device 2 of the embodiment.
10 is a diagram showing a protocol stack of the control plane.
11 is a diagram showing an example of a radio protocol architecture for DC.
Is a diagram illustrating an example of an LTE downlink resource element mapping in FIG. 12 the same embodiment.
13 is a diagram showing an example of a downlink resource elements mapping NR in the same embodiment.
14 is a diagram showing an example of a downlink resource elements mapping NR in the same embodiment.
15 is a diagram showing an example of a downlink resource elements mapping NR in the same embodiment.
Is a diagram illustrating an example of a frame structure of a self-contained transmission in FIG. 16 the same embodiment.
17 is a diagram showing a procedure of transfer of the terminal device capability.
18 is a diagram showing a procedure of transfer of the terminal device capability.
It is a block diagram showing a first exemplary configuration of FIG. 19] eNB.
It is a block diagram showing a second exemplary configuration of FIG. 20] eNB.
21 is a block diagram showing an example of a schematic configuration of a smart phone.
22 is a block diagram showing an example of a schematic configuration of a car navigation system.
DESCRIPTION OF THE INVENTION
[0016]
　Reference will now be described in detail preferred embodiments of the present disclosure. In the specification and the drawings, components having substantially the same function and structure are a repeated explanation thereof by referring to the figures. Further, unless otherwise specified, the techniques described below, functions, methods, construction, procedure, and all other described can be applied to LTE and NR.
[0017]
　The description will be made in the following order.
　1. Embodiment
　　1.1. Overview
　　1.2. Radio frame structure
　　1.3. Channel and the signal
　　1.4. Configuration
　　1.5. Control information and the control channel
　　1.6. Technical features
　2. Applications
　　2.1. Application example of a base station
　　2.2. Application Examples of the terminal device
　3. Conclusion
[0018]
　<< 1. Embodiment
　　>> <1.1. Summary>
　　 in this embodiment
　In this embodiment, the wireless communication system, characterized by at least the base station apparatus 1 and terminal apparatus 2. The base station apparatus 1 can accommodate a plurality of terminal devices. The base station apparatus 1 can be connected together by another base station apparatus and the X2 interface means. Further, the base station apparatus 1 can be connected to an EPC (Evolved Packet Core) by means of a S1 interface to an. Furthermore, the base station apparatus 1 may be connected to the MME (Mobility Management Entity) by means of S1-MME interface can connect to a S-GW (Serving Gateway) by means of S1-U interface. S1 interface to an are between the MME and / or S-GW and the base station apparatus 1 and supports a many-to-many connections. Further, in the present embodiment, the base station apparatus 1 and terminal apparatus 2 supports LTE and / or NR, respectively.
[0019]
　　
　In the present embodiment, the base station apparatus 1 and the terminal device 2, supports one or more radio access technology (RAT), respectively. For example, RAT includes LTE and NR. One RAT corresponds to one cell (component carrier). That is, when a plurality of RAT are supported, their RAT, each correspond to a different cell. In this embodiment, the cell, the downlink resource, uplink resource, and / or a combination of side links. In the following description, the cell corresponding to the LTE is referred to as LTE cell, the cell corresponding to NR is referred to as a NR cell.
[0020]
　Communication downlink is a communication for the terminal apparatus 2 from the base station apparatus 1. Downlink transmission are transmitted from the base station apparatus 1 to the terminal device 2, which is the transmission of the downlink physical channels and / or downlink physical signals. Uplink communication is a communication from the terminal device 2 to the base station apparatus 1. Uplink transmission is transmitted from the terminal device 2 to the base station apparatus 1, the transmission of the uplink physical channels and / or uplink physical signals. Communication side links is a communication to another terminal apparatus 2 from the terminal device 2. Side link transmission is transmitted from the terminal device 2 to another terminal device 2, which is the transmission side link physical channel and / or side links physical signals.
[0021]
　Communication side links are defined for direct proximity detection and proximity direct communication between terminals. Communication side links may use the same frame structure and the uplink and downlink. The communication of the side links may be limited to a portion of the uplink resource and / or downlink resources (subset).
[0022]
　The base station apparatus 1 and terminal apparatus 2, the downlink, in uplink and / or side links and supports communication using a single cell. Communication by one cell is referred to as a stand-alone. Cells standalone is supported is a cell that can be connected without the assist of the control information from the other cells by carrier aggregation and dual connectivity later. Stand-alone cell, at least the function of initial connection facilities. Standalone, in terms of the physical layer, communication using only one cell is performed.
[0023]
　The base station apparatus 1 and terminal apparatus 2, the downlink, in uplink and / or side links, capable of supporting communication using a set of one or more cells. Communication by a set of a plurality of cells is referred to as carrier aggregation or dual connectivity. For more information on carrier aggregation and dual connectivity will be described later. Further, each cell using a predetermined frequency bandwidth. Maximum value in a predetermined frequency bandwidth, minimum and Possible values ​​may be defined in advance.
[0024]
　Figure 1 is a diagram showing an example of a setting of a component carrier in the present embodiment. In the example of FIG. 1, one LTE cell and two NR cell is set. One LTE cell is set as the primary cell. Two NR cell is set as the primary secondary cell and the secondary cell, respectively. Two NR cell is integrated by the carrier aggregation. Also, LTE cell and NR cell is integrated by the dual connectivity. Incidentally, LTE cell and NR cell may be integrated by the carrier aggregation. In the example of FIG. 1, NR, since it can be assisted to connect the LTE cell is the primary cell may not support some functions, such as functions for communicating standalone. Function for communicating a standalone includes functions required for initial connection. That is, the ability to communicate in a stand-alone, the other communication system (e.g., LTE) without requiring an assist connection by cell, to allow control of independent communication with the other communication method. Incidentally, NR corresponds to an example of the "first communication scheme", LTE is equivalent to an example of the "second communication scheme".
[0025]
　Figure 2 is a diagram showing an example of a setting of a component carrier in the present embodiment. In the example of FIG. 2, two NR cell is set. Two NR cell is set as the primary cell and secondary cell, respectively, it is integrated by the carrier aggregation. In this case, NR cell by supporting function for communicating a standalone, assist LTE cell becomes unnecessary. Incidentally, the two NR cell may be integrated dual connectivity.
[0026]
　　<1.2. Radio frame configuration>
　　radio frame configuration> in
　FIG. 3 is a diagram showing an example of LTE downlink subframe in the present embodiment. The view shown in Figure 3, also referred to as LTE downlink resource grid. The base station apparatus 1, in the downlink subframe to the terminal device 2 can transmit downlink physical signal of the LTE downlink physical channels and / or LTE. The terminal apparatus 2, in the downlink sub-frame from the base station apparatus 1 can receive the LTE downlink physical channels and / or LTE downlink physical signals.
[0037]
　Figure 4 is a diagram showing an example of an LTE uplink sub-frame in this embodiment. The view shown in Figure 4, also referred to as LTE uplink resource grid. The terminal apparatus 2, in the uplink subframe to the base station apparatus 1 can transmit the LTE uplink physical channels and / or LTE uplink physical signals. The base station apparatus 1 in the uplink subframe from a terminal device 2 can receive the LTE uplink physical channels and / or LTE uplink physical signals.
[0038]
　In the present embodiment, the physical resources of LTE may be defined as follows. One slot is defined by a plurality of symbols. Physical signal or a physical channel transmitted in each slot is represented by a resource grid. In the downlink, resource grid includes a plurality of subcarriers for the frequency direction is defined by a plurality of OFDM symbols for the time direction. In uplink, the resource grid includes a plurality of subcarriers for the frequency direction is defined by a plurality of SC-FDMA symbols for the time direction. The number of subcarriers or resource blocks may be determined depending on the band width of the cell. The number of symbols in one slot, depends on the type of CP (Cyclic Prefix). Type of CP is a normal CP or an extended CP. In the normal CP, the number of OFDM symbols or SC-FDMA symbols constituting one slot is 7. In Extended CP, the number of OFDM symbols or SC-FDMA symbols constituting one slot is 6. It referred respectively to as a resource element of the element in the resource grid. Resource element is identified by using the index of the symbol index subcarrier (ID) (No.). In the description of this embodiment, OFDM symbols or SC-FDMA symbols are simply referred to as a symbol.
[0039]
　Resource blocks are used for mapping certain physical channels (such as PDSCH or PUSCH) to resource elements. Resource block includes a virtual resource block and physical resource block. Certain physical channel is mapped to the virtual resource blocks. Virtual resource block is mapped to physical resource blocks. One physical resource block is defined by the successive symbols of a predetermined number in the time domain. One physical resource block is defined and a consecutive subcarriers of a predetermined number in the frequency domain. The number of symbols and the number of subcarriers in one physical resource block, the type of CP in the cell is determined based like parameters set by the sub-carrier spacing and / or the upper layer. For example, a type is a normal CP in CP, when the subcarrier spacing is 15 kHz, the number of symbols in one physical resource blocks is 7, the number of subcarriers is 12. In that case, one physical resource block is composed of (7 × 12) pieces of resource elements. Physical resource blocks are numbered from 0 in the frequency domain. Further, the same physical resource block number corresponds, two resource blocks in one subframe is defined as a physical resource block pairs (PRB pairs, RB pair).
[0040]
　In each of the LTE cell, in some subframe, one predetermined parameter is used. For example, the predetermined parameter is a parameter (physical parameter) related to the transmission signal. Parameters relating to transmission signals, CP length, a subcarrier spacing, number of symbols in one subframe (predetermined time length), the number of subcarriers definitive one resource blocks (predetermined frequency band), multiple access scheme, and the signal waveform, and the like.
[0041]
　That is, in the LTE cell, the downlink signal and uplink signal are respectively predetermined time length (for example, subframe) in, is generated using one predetermined parameter. In other words, the terminal device 2, a downlink signal transmitted from the base station apparatus 1, and an uplink signal to be transmitted to the base station apparatus 1 in each predetermined time length, it is generated at one predetermined parameter , and it is assumed. Further, the base station apparatus 1, a downlink signal to be transmitted to the terminal device 2, and, as an uplink signal transmitted from the terminal apparatus 2, at each predetermined time length, is generated at one predetermined parameter set to.
[0042]
　　
　In each of NR cell, a certain predetermined length of time (e.g., subframes), the one or more predetermined parameters are used. That is, in the NR cell, downlink signals and uplink signals in each predetermined time length, is generated using one or more predetermined parameters. In other words, generation terminal apparatus 2, a downlink signal transmitted from the base station apparatus 1, and an uplink signal to be transmitted to the base station apparatus 1 in each predetermined length of time at one or more predetermined parameters is is, to be assumed. Further, the base station apparatus 1, a downlink signal to be transmitted to the terminal device 2, and the uplink signal transmitted from the terminal apparatus 2, at each predetermined time length, is generated at one or more predetermined parameters It can be set to. If a plurality of predetermined parameters are used, the signal generated is used their predetermined parameters are multiplexed by a predetermined method. For example, the predetermined method, FDM (Frequency Division Multiplexing), TDM (Time Division Multiplexing), etc. CDM (Code Division Multiplexing) and / or SDM (Spatial Division Multiplexing).
[0043]
　The combination of predetermined parameters to be set in NR cell, as a parameter set can be defined in advance plural kinds.
[0044]
　Figure 5 is a diagram showing an example of a parameter set related to the transmission signal in the NR cell. In the example of FIG. 5, the parameters relating to the transmission signal included in the parameter set, subcarrier spacing, number of subcarriers per resource block in NR cell, the number of symbols per subframe, and a CP length type. CP length type is a CP length type used in NR cell. For example, CP lengths Type 1 corresponds to the normal CP in LTE, CP length Type 2 corresponds to the extended CP in LTE.
[0045]
　Parameter sets for transmitting signals in the NR cell can be defined individually in the downlink and uplink. The parameter sets for transmitting signals in the NR cell can be set independently in the downlink and uplink.
[0046]
　Figure 6 is a diagram showing an example of a downlink subframe of the NR in this embodiment. In the example of FIG. 6, a parameter set 1, signal generated using the parameter set 0 and the parameter set 2, in the cell (system bandwidth), is FDM. The view shown in FIG. 6 is referred to as downlink resource grid of NR. The base station apparatus 1, in the downlink subframe to the terminal device 2 can transmit downlink physical downlink signal physical channels and / or NR a NR. The terminal apparatus 2, in the downlink sub-frame from the base station apparatus 1 can receive the downlink physical downlink signal physical channels and / or NR a NR.
[0047]
　Figure 7 is a diagram showing an example of the uplink sub-frame of the NR in this embodiment. In the example of FIG. 7, a parameter set 1, signal generated using the parameter set 0 and the parameter set 2, in the cell (system bandwidth), is FDM. The view shown in FIG. 6 is referred to as an uplink resource grid of NR. The base station apparatus 1 in the uplink subframe to the terminal device 2 can transmit uplink physical signal uplink physical channel and / or NR a NR. The terminal apparatus 2, in the uplink sub-frame from the base station apparatus 1 can receive the uplink physical signal uplink physical channel and / or NR a NR.
[0048]
　Thus, in the NR, it is possible to selectively control in accordance with sub-carrier spacing and symbol length to the situation (i.e., subcarrier spacing and symbol length is variable). With such a configuration, in the NR, for example, as a technique so-called V2X (Vehicular-to-X (Something)), in a situation such as reliability is required, than by shortening the symbol length it is possible to realize the communication of low latency.
[0049]
　　
　antenna port, the propagation channel for carrying a symbol is defined in order to be able to infer from the propagation channel carrying another symbol in the same antenna port. For example, different physical resources in the same antenna port, can be assumed to have been transmitted in the same transmission channel. That is, the symbols in one antenna port, it is possible to estimate the propagation channel by a reference signal at the antenna port, and demodulates. Also, there is one resource grid for each antenna port. Antenna port is defined by the reference signal. Further, each of the reference signal can define multiple antenna ports.
[0050]
　Antenna port is specified or identified by the antenna port number. For example, antenna ports 0-3 is an antenna port CRS is transmitted. That, PDSCH transmitted on antenna ports 0 to 3 can be demodulated by CRS corresponding to antenna ports 0 to 3.
[0051]
　If two antenna ports predetermined condition is satisfied, the quasi-same position: it can be expressed as a (QCL Quasi co-location). The predetermined condition, wide-area characteristic of the propagation channel for carrying symbols at a antenna port is to be inferred from the propagation channel carrying the symbols in another antenna port. Regional characteristics comprise delay spread, Doppler spread, Doppler shift, the average gain and / or average delay.
[0052]
　In this embodiment, the antenna port number may be defined differently for each RAT, it may be defined in common between RAT. For example, antenna ports 0-3 in LTE is an antenna port CRS is transmitted. In NR, antenna ports 0-3, the antenna may have ports CRS similar to LTE are transmitted. Further, the antenna port in the NR, in which the same LTE CRS are transmitted may be a different antenna port number is the antenna port 0-3. In the description of this embodiment, the predetermined antenna port numbers, can be applied to LTE and / or NR.
[0053]
　　<1.3. Channels and signals>
　　physical channels and physical signals> in
　As described already, description for the physical channel and the physical signal can be applied to NR physical channels and NR physical signals. NR physical channels and NR physical signal is referred as follows.
[0056]
　Is NR downlink physical channel, NR-PBCH, NR-PCFICH (Physical Control Format Indicator Channel), NR-PHICH (Physical Hybrid automatic repeat request Indicator Channel), NR-PDCCH (Physical Downlink Control Channel), NR-EPDCCH (Enhanced PDCCH), NR-MPDCCH (MTC PDCCH), NR-R-PDCCH (Relay PDCCH), NR-PDSCH (Physical Downlink Shared Channel), and including NR-PMCH (Physical Multicast Channel).
[0057]
　NR downlink physical signals, NR-SS (Synchronization signal), and the like NR-DL-RS (Downlink Reference Signal) and NR-DS (Discovery signal). NR-SS is, including NR-PSS (Primary synchronization signal) and NR-SSS (Secondary synchronization signal). NR-RS is, NR-CRS (Cell-specific reference signal), NR-PDSCH-DMRS (UE-specific reference signal associated with PDSCH), NR-EPDCCH-DMRS (Demodulation reference signal associated with EPDCCH), NR-PRS ( Positioning Reference Signal), NR-CSI-RS (Channel State Information - reference signal), and including NR-TRS (Tracking reference signal).
[0058]
　NR uplink physical channel, NR-PUSCH (Physical Uplink Shared Channel), NR-PUCCH (Physical Uplink Control Channel), and including NR-PRACH (Physical Random Access Channel).
[0059]
　NR uplink physical signals include NR-UL-RS (Uplink Reference Signal). NR-UL-RS comprises like NR-UL-DMRS (Uplink demodulation signal) and NR-SRS (Sounding reference signal).
[0060]
　It is NR side link physical channel, NR-PSBCH (Physical Sidelink Broadcast Channel), NR-PSCCH (Physical Sidelink Control Channel), NR-PSDCH (Physical Sidelink Discovery Channel), and including NR-PSSCH (Physical Sidelink Shared Channel) .
[0061]
　　
　PBCH is used to inform the MIB (Master Information Block) is a specific broadcast information in the serving cell of the base station apparatus 1. PBCH is transmitted only in subframes 0 in the radio frame. MIB can be updated at 40ms interval. PBCH is repeatedly transmitted in the 10ms period. Specifically, SFN (System Frame Number) in subframe 0 initial transmission of the MIB is carried out in a satisfying radio frame modulo is 0 at 4, at subframe 0 in all other radio frames re-transmission of the MIB (repetition) is performed. SFN is the number of the radio frames (system frame number). MIB is a system information. For example, MIB includes information indicating the SFN.
[0062]
　PCFICH is used to transmit the information about the number of OFDM symbols used for transmitting the PDCCH. Area indicated by PCFICH is referred to as PDCCH region. Information transmitted in PCFICH is referred to as CFI (Control Format Indicator).
[0063]
　PHICH is uplink data from the base station apparatus 1 receives (Uplink Shared Channel: UL-SCH) for ACK (acknowledgment) or NACK HARQ-ACK (HARQ indicator indicating the (Negative acknowledgment), HARQ feedback, response information, HARQ: used to transmit a Hybrid Automatic Repeat reQuest). For example, if the terminal device 2 receives the HARQ-ACK indicating the ACK, it does not retransmit the corresponding uplink data. For example, if the terminal device 2 receives the HARQ-ACK indicating the NACK, it retransmits the uplink data terminal device 2 corresponding in a predetermined uplink subframe. There PHICH transmits the HARQ-ACK for a uplink data. The base station apparatus 1 transmits using a plurality of PHICH respective HARQ-ACK for a plurality of uplink data included in the same PUSCH.
[0064]
　PDCCH and EPDCCH is downlink control information (Downlink Control Information: DCI) used to transmit. Mapping of information bits of the downlink control information is defined as the DCI format. Downlink control information includes downlink grant (downlink grant) and uplink grant (uplink grant). Downlink grant, also referred to as a downlink assignment (downlink assignment) or downlink allocation (downlink allocation).
[0065]
　PDCCH is transmitted by a set of contiguous one or more CCE (Control Channel Element). CCE is comprised of nine REG (Resource Element Group). REG is comprised of four resource elements. If PDCCH is composed of n consecutive CCE, the PDCCH begins satisfies CCE remainder of dividing i is an index (number) of CCE in which n is 0.
[0066]
　EPDCCH is transmitted by a set of contiguous one or more of ECCE (Enhanced Control Channel Element). ECCE is composed of a plurality of EREG (Enhanced Resource Element Group).
[0067]
　Downlink grant is used for scheduling of the PDSCH in a cell. Downlink grant, the downlink grant is used for scheduling PDSCH in the same subframe as the subframe was transmitted. Uplink grant is used for the scheduling of PUSCH in a cell. Uplink grant, the uplink grant is used for the scheduling of a single PUSCH in a subframe after four more than the sub-frames transmitted.
[0068]
　The DCI, CRC (Cyclic Redundancy Check) parity bits are added. CRC parity bits are scrambled by RNTI (Radio Network Temporary Identifier). RNTI is depending on the purpose of the DCI, an identifier that can be defined or set. RNTI is an identifier which is set as the information unique predefined by the identifier, the cell specification, the identifier is set as the information unique to the terminal device 2, or is set as the information unique to the group to which belongs the terminal apparatus 2 that is an identifier. For example, the terminal device 2, in the monitoring of the PDCCH or EPDCCH, descramble a predetermined RNTI on the CRC parity bits which are added to the DCI, identify whether the CRC is correct. If the CRC is correct, it can be seen that DCI is DCI for the terminal device 2.
[0069]
　PDSCH is a downlink data: used for transmitting (Downlink Shared Channel DL-SCH) to. Also, PDSCH is also used for transmitting control information of the upper layer.
[0070]
　PMCH is multicast data (Multicast Channel: MCH) is used to transmit.
[0071]
　In PDCCH region, a plurality of PDCCH frequency, time, and / or may be spatially multiplexed. In EPDCCH region, a plurality of EPDCCH frequency, time, and / or may be spatially multiplexed. In PDSCH region, a plurality of PDSCH frequency, time, and / or may be spatially multiplexed. PDCCH, PDSCH and / or EPDCCH frequency, time, and / or may be spatially multiplexed.
[0072]
　　
　synchronization signal, the terminal device 2 is used to synchronize the frequency domain and / or time domain of the downlink. Synchronization signal includes a PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal). Synchronization signal is arranged in a predetermined subframe in a radio frame. For example, in a TDD system, the synchronization signals are arranged in sub-frame 0, 1, 5, and 6 in the radio frame. In FDD scheme, the synchronization signals are arranged in sub-frame 0 and 5 in the radio frame.
[0073]
　PSS is rough frame / symbol timing synchronization may be used to identify the (time domain synchronization) and the cell identification group. SSS, the identification of more accurate frame timing synchronization and cell may be used to detect the CP length. That is, by using the PSS and SSS, it is possible to perform frame timing synchronization and cell identification.
[0074]
　Downlink reference signals, channel estimation of the terminal device 2 is a downlink physical channel, channel compensation, the calculation of the downlink CSI (Channel State Information, the channel state information), and / or the measurement of positioning of the terminal device 2 used to perform.
[0075]
　CRS is transmitted over the entire band of the sub-frame. CRS is, PBCH, PDCCH, PHICH, used for performing PCFICH, and receiving the PDSCH (the demodulation). CRS may be used for the terminal device 2 calculates the downlink channel state information. PBCH, PDCCH, PHICH, and the PCFICH is transmitted at antenna port used for transmission of the CRS. CRS supports the structure of 1, 2 or 4 antenna ports. CRS is transmitted on one or more antenna ports 0-3.
[0076]
　URS related PDSCH are transmitted in the subframe and the bandwidth used for transmitting the PDSCH that URS is associated. URS is used to demodulate the PDSCH that URS is associated. URS related PDSCH is sent in one or more antenna ports 5,7-14.
[0077]
　PDSCH based on the transmission mode and the DCI format, is transmitted on antenna port used for transmission of the CRS or URS. DCI format 1A is used for scheduling PDSCH to be transmitted at the antenna port used for transmission of the CRS. DCI format 2D is used for scheduling PDSCH to be transmitted at the antenna port used for transmission of the URS.
[0078]
　DMRS associated with EPDCCH is, DMRS is transmitted in sub-frame and the bandwidth used for transmitting the associated EPDCCH. DMRS is used to demodulate the EPDCCH the DMRS is associated. EPDCCH is transmitted on antenna port used for transmission of the DMRS. DMRS associated with EPDCCH is transmitted on one or more antenna ports 107-114.
[0079]
　CSI-RS is transmitted in subframe set. Resources CSI-RS is transmitted is set by the base station apparatus 1. CSI-RS is used for the terminal device 2 calculates the downlink channel state information. Terminal device 2 performs signal measurement (channel measurement) using a CSI-RS. CSI-RS supports the setting of some or all of the antenna ports of 1,2,4,8,12,16,24 and 32. CSI-RS is transmitted in one or more antenna ports 15-46. The antenna ports are supported, the terminal device capability terminal device 2, setting the RRC parameters, and / or may be determined based, such as the transmission mode to be set.
[0080]
　Resources ZP CSI-RS is set by higher layers. Resources ZP CSI-RS may be transmitted at a power of zero output. That is, the resource of the ZP CSI-RS may not send any. In the set resource of the ZP CSI-RS, PDSCH and EPDCCH is not transmitted. For example, the resources of the ZP CSI-RS used for transmission of the adjacent cells NZP CSI-RS (Non-Zero Power CSI-RS). Further, for example, resources ZP CSI-RS (Zero Power CSI-RS) is CSI-IM - used to measure (Channel State Information Interference Measurement). Further, for example, resources ZP CSI-RS is a resource that a given channel is not transmitted, such as PDSCH. In other words, the predetermined channel, except for the resources of the ZP CSI-RS (and rate matching, and punctured) is mapped.
[0081]
　　
　PUCCH is an uplink control information: a physical channel used for transmitting (Uplink Control Information UCI). Uplink control information, downlink channel state information (Channel State Information: CSI), scheduling request indicating a request of the PUSCH resource (Scheduling Request: SR), downlink data (Transport block: TB, Downlink- Shared Channel: DL including HARQ-ACK for -SCH). HARQ-ACK is, ACK / NACK, HARQ feedback, or, also called response information. Further, HARQ-ACK for the downlink data indicate ACK, NACK or DTX,.
[0082]
　PUSCH is uplink data: a physical channel used to transmit (Uplink-Shared Channel UL-SCH). Further, PUSCH may be used to transmit the HARQ-ACK and / or channel state information with the uplink data. Further, PUSCH, the channel state information only, or may be used to transmit only the HARQ-ACK and channel state information.
[0083]
　PRACH is a physical channel used for transmitting the random access preamble. PRACH may be the terminal device 2 is used to synchronize the time domain base station apparatus 1. Further, PRACH, the initial connection establishment (initial connection establishment) procedure (process), a handover procedure, connections restructuring (connection re-establishment) procedures, synchronization (timing adjustment) for the uplink transmission, and / or a request for PUSCH resources It is also used to indicate a.
[0084]
　In PUCCH region, a plurality of PUCCH is frequency, time, and spatial and / or code multiplexing. In PUSCH region, a plurality of PUSCH frequency, time, or may be spatially and / or code multiplexing. PUCCH and PUSCH are frequency, time, or may be spatially and / or code multiplexing. PRACH may be disposed over a single sub-frame or sub-frame. A plurality of PRACH may be code-multiplexed.
[0085]
　　
　resource element group (REG: Resource Element Group) is used to define the mapping of the resource elements and a control channel. For example, REG is used PDCCH, PHICH or mapping PCFICH,. REG is the same OFDM symbol, in the same resource block consists of four consecutive resource elements not used for CRS. Further, REG is comprised of first OFDM symbol in the first slot within a subframe in the fourth OFDM symbol.
[0086]
　Expanded resource element group (EREG: Enhanced Resource Element Group) is used to define the mapping of the extended control channel resource elements. For example, EREG is used for mapping EPDCCH. One resource block pair is composed of 16 of EREG. Each EREG are numbered from 0 to 15 for each resource block pair. Each EREG, in one resource block pair, composed of nine resource element except for resource elements used for DM-RS associated with EPDCCH.
[0087]
　　<1.4. Configuration>
　　 of the base station apparatus 1 according to this embodiment
　FIG. 8 is a schematic block diagram showing a configuration of a base station apparatus 1 of the present embodiment. As shown, the base station apparatus 1 is configured to include higher layer processing unit 101, the control unit 103, receiving unit 105, transmitting unit 107, and transmitting and receiving antenna 109, a. The receiving unit 105, decoding unit 1051, a demodulation unit 1053, the demultiplexing unit 1055, configured to include a radio reception unit 1057, and the channel measurement unit 1059. Also configured transmission section 107, coding section 1071, modulation section 1073, multiplexing section 1075, the radio transmission unit 1077, and include a downlink reference signal generating unit 1079.
[0088]
　As already described, the base station apparatus 1 can support one or more RAT. Some or all of the components included in the base station apparatus 1 shown in FIG. 8 can be configured individually in accordance with the RAT. For example, the receiving unit 105 and the transmitting unit 107 is configured separately for the LTE and NR. Further, in the NR cell, some or all of the components included in the base station apparatus 1 shown in FIG. 8 can be configured individually in accordance with the parameter set for the transmission signal. For example, in certain NR cell, the radio reception unit 1057 and radio transmission unit 1077 may be configured individually in accordance with the parameter set for the transmission signal.
[0089]
　Higher layer processing unit 101, the medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a radio link control (Radio Link Control: RLC) layer, a radio resource control (Radio Resource Control: performing processing RRC) layer. Also, higher layer processing unit 101 generates control information for controlling the receiving unit 105 and the transmitting unit 107, and outputs to the control unit 103.
[0090]
　Control unit 103, based on control information from the higher layer processing unit 101 controls the receiving unit 105 and the transmitting unit 107. Control unit 103 generates control information to the higher layer processing unit 101, and outputs to the upper layer processing unit 101. Control unit 103 inputs the channel estimation results from the decoded signal and the channel measurement unit 1059 from the decoding unit 1051. Control unit 103 outputs a signal for encoding to the encoding section 1071. The control unit 103 is used to control all or part of the base station apparatus 1.
[0091]
　Higher layer processing unit 101, RAT control, radio resource control, subframe configuration, scheduling control, and / or performs processing and management relating to CSI reporting control. Processing and management in the higher layer processing unit 101 is performed in the terminal apparatus common connecting each terminal device, or the base station apparatus. Processing and management in the higher layer processing unit 101 may be performed only by the higher layer processing unit 101 may acquire from the upper node or another base station apparatus. The processing and management in the higher layer processing unit 101 may be performed individually in accordance with the RAT. For example, upper layer processing section 101 performs a processing and management in LTE, the processing and management in the NR separately.
[0092]
　In RAT control in higher layer processing unit 101, management related RAT is performed. For example, in RAT control, management related to the management and / or NR about LTE is performed. Management of the NR, including setting and processing parameters set for transmitting signals in the NR cell.
[0093]
　In the radio resource control in the upper layer processing unit 101, downlink data (transport block), system information, RRC message (RRC parameters), and / or, MAC control elements: generation and / or management of (CE Control Element) It takes place.
[0094]
　The subframe configuration in the upper layer processing unit 101, a sub-frame set, a subframe pattern setting, uplink - downlink setting, uplink reference UL-DL configuration and / or management a row for downlink reference UL-DL Configuration divide. Note that subframe configuration in the upper layer processing unit 101, also referred to as a base station sub-frame configuration. The sub-frame set in the higher layer processing unit 101 may be determined based on the traffic volume of traffic and the downlink uplink. The sub-frame set in the higher layer processing unit 101 may be determined based on the scheduling result of the scheduling control in higher layer processing unit 101.
[0095]
　Scheduling control in higher layer processing unit 101, based on such a quality estimate and the channel of the propagation path input from the channel state information and the channel measurement unit 1059 has received, the frequency and the sub-frame allocate a physical channel, a physical channel such as code rate and modulation scheme and transmission power are determined. For example, the control unit 103, based on the scheduling result of the scheduling control in higher layer processing unit 101 generates control information (DCI format).
[0096]
　In CSI reporting control in the upper layer processing unit 101, CSI reporting of the terminal device 2 is controlled. For example, settings for CSI reference resource for assumed for calculating the CSI in the terminal device 2 is controlled.
[0097]
　Receiving unit 105 under the control of the control unit 103 receives a signal transmitted from the terminal device 2 through the transmitting and receiving antenna 109, further separation, demodulation, performs reception processing such as decoding, the information reception process and outputs to the control unit 103. The reception process in the reception unit 105, predefined set or base station apparatus 1, is performed based on the set notified to the terminal device 2.
[0098]
　Radio reception section 1057, with respect to the uplink signal received through the transmitting and receiving antenna 109, converted to an intermediate frequency (down-conversion), removal of unwanted frequency components, so that the signal level is appropriately maintained control of amplification level, quadrature demodulation based on in-phase and quadrature components of the received signal, converted to a digital signal from an analog signal, the guard interval: removal of (guard interval GI), and / or a fast Fourier transform (fast Fourier Transform: for extracting a frequency domain signal by FFT).
[0099]
　Demultiplexing unit 1055, from the signal inputted from radio receiving section 1057, separates the uplink channel and / or uplink reference signals such as PUCCH or PUSCH. Demultiplexing unit 1055 outputs the uplink reference signal to the channel measurement unit 1059. Demultiplexing unit 1055, the estimated value of the propagation path input from the channel measurement unit 1059 performs channel compensation of for the uplink channel.
[0100]
　Demodulation unit 1053, the modulated symbols of the uplink channel, BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM, received signal using a modulation scheme such as 256QAM It performs demodulation of. Demodulation unit 1053 performs separation and demodulation of the uplink channel which is MIMO multiplexed.
[0101]
　Decoding unit 1051, the coded bits of the demodulated uplink channel, performs a decoding process. The decoded uplink data and / or uplink control information has is output to the control unit 103. Decoding unit 1051, for the PUSCH, performs decoding processing for each transport block.
[0102]
　Channel measurement unit 1059, such as by measuring the estimated value and / or the channel quality of the channel from the uplink reference signal input from the demultiplexing unit 1055, and outputs to the demultiplexing unit 1055 and / or the control unit 103. For example, channel measurement unit 1059 measures the estimated value of the propagation path to perform channel compensation for the PUCCH or PUSCH by using the UL-DMRS, measures the quality of the channel in the uplink using the SRS.
[0103]
　Transmitting unit 107 under the control of the control unit 103, with respect to downlink control information and downlink data input from the higher layer processing unit 101, encoding, transmission processing such as modulation and multiplexing. For example, the transmission unit 107, PHICH, PDCCH, EPDCCH, PDSCH, and generates and multiplexes the downlink reference signal to generate a transmission signal. The transmission processing in the transmission section 107, predefined set, setting the base station apparatus 1 is notified to the terminal device 2, or on the basis of the set to be notified through PDCCH or EPDCCH transmitted in the same subframe It takes place.
[0104]
　Encoding unit 1071, is input from the control unit 103 HARQ indicator (HARQ-ACK), the downlink control information, and the downlink data, block coding, convolutional coding, predetermined coding such as turbo coding encoding is performed by using the method. Modulation unit 1073 modulates the coded bits input from the encoding unit 1071 BPSK, QPSK, 16QAM, 64QAM, a predetermined modulation scheme such as 256QAM. Downlink reference signal generating unit 1079, a physical cell identifier (PCI: Physical cell identification), and the like based on RRC parameters set in the terminal device 2, generates a downlink reference signal. Multiplexing unit 1075, a modulation symbol and downlink reference signals of each channel are multiplexed and arranged in a predetermined resource elements.
[0105]
　Radio transmission section 1077, to the signal from the multiplexing unit 1075, an inverse fast Fourier transform (Inverse Fast Fourier Transform: IFFT) conversion to a signal in the time domain by the addition of a guard interval, generation of the digital baseband signal, conversion to an analog signal, quadrature modulation, conversion from intermediate frequency signal to a high frequency signal (up-conversion: Stay up-the convert), removal of unnecessary frequency components, performs processing such as power amplification, to generate a transmission signal . Transmission signal radio transmitting section 1077 is output is transmitted from the transmitting and receiving antenna 109.
[0106]
　　
　FIG. 9 is a schematic block diagram showing the configuration of the terminal device 2 of this embodiment. As illustrated, the terminal device 2 is configured higher layer processing unit 201, the control unit 203, receiving unit 205, including a transmission unit 207 and the transmitting and receiving antenna 209,. The receiving unit 205, decoding unit 2051, a demodulation unit 2053, the demultiplexing unit 2055, configured to include a radio reception unit 2057, and the channel measurement unit 2059. Also configured transmission section 207, coding section 2071, modulation section 2073, multiplexing section 2075, the radio transmission unit 2077, and includes an uplink reference signal generation unit 2079.
[0107]
　As already described, the terminal device 2 can support more than one RAT. Some or all of the components included in the terminal device 2 shown in FIG. 9 may be configured separately depending on the RAT. For example, the receiving unit 205 and the transmitting unit 207 is configured separately for the LTE and NR. Further, in the NR cell, some or all of the components included in the terminal device 2 shown in FIG. 9 may be configured separately according to the parameter set for the transmission signal. For example, in certain NR cell, the radio reception unit 2057 and radio transmission unit 2077 may be configured individually in accordance with the parameter set for the transmission signal.
[0108]
　Higher layer processing unit 201, the uplink data (transport block), and outputs to the control unit 203. Higher layer processing unit 201, the medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a radio link control (Radio Link Control: RLC) layer, a radio resource control (Radio Resource Control: RRC) performs processing of the layer. Also, higher layer processing unit 201 generates control information for controlling the receiving unit 205, and the transmitting unit 207, and outputs to the control unit 203.
[0109]
　Control unit 203, based on control information from the higher layer processing unit 201, controls the reception unit 205 and transmission unit 207. Control unit 203 generates control information to the higher layer processing unit 201, and outputs to the upper layer processing unit 201. Control unit 203 inputs the channel estimation results from the decoded signal and the channel measurement unit 2059 from the decoding unit 2051. Control unit 203 outputs a signal for encoding to the encoding section 2071. The control unit 203 may be used to control all or part of the terminal device 2.
[0110]
　Higher layer processing unit 201, RAT control, radio resource control, subframe configuration, scheduling control, and / or the processing and management of CSI reporting control performed. Processing and management in the higher layer processing unit 201 sets defined in advance, and / or is made based on the setting based on the control information set or notified from the base station apparatus 1. For example, the control information from the base station apparatus 1 includes RRC parameters, the MAC control element or DCI. The processing and management in the higher layer processing unit 201 may be performed individually in accordance with the RAT. For example, higher layer processing unit 201 performs the processing and management in LTE, the processing and management in the NR separately.
[0111]
　In RAT control in higher layer processing unit 201, management related RAT is performed. For example, in RAT control, management related to the management and / or NR about LTE is performed. Management of the NR, including setting and processing parameters set for transmitting signals in the NR cell.
[0112]
　In the radio resource control in the upper layer processing unit 201, the management configuration information in the device itself is performed. In the radio resource control in the upper layer processing unit 201, the uplink data (transport block), system information, RRC message (RRC parameters), and / or, MAC control elements: generation and / or management of (CE Control Element) It takes place.
[0113]
　The subframe configuration in the upper layer processing unit 201, a sub-frame set in the different base station apparatus and the base station apparatus 1 and / or the base station apparatus 1 is managed. Subframe configuration, the setting of the uplink or downlink for the sub-frame, subframe pattern setting, uplink - including downlink setting, uplink reference UL-DL configuration, and / or, a downlink reference UL-DL configuration. Note that subframe configuration in the upper layer processing unit 201, also referred to as terminal subframe configuration.
[0114]
　Scheduling control in higher layer processing unit 201, based on the DCI (scheduling information) from the base station apparatus 1, the control information for performing control related to scheduling for the receiving unit 205 and the transmission unit 207 is generated.
[0115]
　In CSI reporting control in the upper layer processing unit 201, control is performed for reporting CSI to the base station apparatus 1. For example, the CSI report control, settings related to CSI reference resource for assumed to calculate the CSI with channel measurement unit 2059 is controlled. The CSI report control, based on the DCI and / or RRC parameters, control resources (timing) used to report CSI.
[0116]
　Information receiving unit 205, which under control of the control unit 203 receives a signal transmitted from the base station apparatus 1 via the transmitting and receiving antenna 209, further separation, demodulation, performs reception processing such as decoding, the received processed and outputs to the control unit 203. The reception processing in the receiver unit 205 is performed based on the notification or setting from predefined set or base station apparatus 1,.
[0117]
　Radio reception section 2057, with respect to the uplink signal received via the transmitting and receiving antenna 209, converted to an intermediate frequency (down-conversion), removal of unwanted frequency components, so that the signal level is appropriately maintained control of amplification level, quadrature demodulation based on in-phase and quadrature components of the received signal, converted to a digital signal from an analog signal, the guard interval: removal of (guard interval GI), and / or a fast Fourier transform (fast Fourier Transform: the extraction of the signal in the frequency domain by FFT).
[0118]
　Demultiplexing unit 2055, from the signal inputted from radio receiving section 2057, separates PHICH, PDCCH, downlink channels such as EPDCCH or PDSCH, a downlink synchronization signal and / or the downlink reference signal. Demultiplexing unit 2055 outputs the downlink reference signal to the channel measurement unit 2059. Demultiplexing unit 2055, the estimated value of the propagation path input from the channel measurement unit 2059 performs channel compensation of for the downlink channel.
[0119]
　Demodulator 2053 performs the modulated symbols of the downlink channel, BPSK, QPSK, 16QAM, 64QAM, the demodulation of the received signal using a modulation scheme such as 256QAM. Demodulator 2053 performs separation and demodulation of downlink channels that are MIMO multiplexed.
[0120]
　Decoding unit 2051, the coded bits of the downlink channel which is demodulated, performs a decoding process. Downlink data and / or downlink control information decoded is output to the control unit 203. Decoding unit 2051, for the PDSCH, performs decoding processing for each transport block.
[0121]
　Channel measurement unit 2059, such as by measuring the estimated value and / or the channel quality of the channel from the downlink reference signal input from the demultiplexing unit 2055, and outputs to the demultiplexing unit 2055 and / or the control unit 203. Downlink reference signal channel measurement unit 2059 is used for measurement may be determined based on the transmission mode and / or other RRC parameters are set by at least RRC parameters. For example, DL-DMRS measures the estimated value of the propagation path to perform channel compensation for the PDSCH or EPDCCH. CRS is the estimated value of the propagation path to perform channel compensation for the PDCCH or PDSCH, and / or measures the channel in the downlink for reporting CSI. CSI-RS measures the channel in the downlink for reporting CSI. Channel measurement unit 2059, CRS, based on the CSI-RS or detection signals, calculates the RSRP (Reference Signal Received Power) and / or RSRQ (Reference Signal Received Quality), and outputs to the upper layer processing unit 201.
[0122]
　The transmission unit 207 is performed according to control of the control unit 203, with respect to uplink control information and uplink data input from the higher layer processing unit 201, encoding, transmission processing such as modulation and multiplexing. For example, the transmission unit 207 generates and multiplexes the uplink channel and / or uplink reference signals such as PUSCH or PUCCH, to generate a transmission signal. The transmission processing in the transmission section 207, pre-defined set, or is made based on the set or notified from the base station apparatus 1.
[0123]
　Encoding unit 2071, is input from the control unit 203 HARQ indicator (HARQ-ACK), the uplink control information, and the uplink data, block coding, convolutional coding, predetermined coding such as turbo coding encoding is performed by using the method. Modulation unit 2073 modulates the coded bits input from the encoding unit 2071 BPSK, QPSK, 16QAM, 64QAM, a predetermined modulation scheme such as 256QAM. Uplink reference signal generating unit 2079, based on such a RRC parameters set in the terminal device 2, generates an uplink reference signal. Multiplexing unit 2075, a modulation symbol and uplink reference signals of each channel are multiplexed and arranged in a predetermined resource elements.
[0124]
　Radio transmission section 2077, to the signal from the multiplexing unit 2075, an inverse fast Fourier transform (Inverse Fast Fourier Transform: IFFT) conversion to a signal in the time domain by the addition of a guard interval, generation of the digital baseband signal, conversion to an analog signal, quadrature modulation, conversion from intermediate frequency signal to a high frequency signal (up-conversion: Stay up-the convert), removal of unnecessary frequency components, performs processing such as power amplification, to generate a transmission signal . Transmission signal radio transmitting section 2077 is output is transmitted from the transmitting and receiving antenna 209.
[0125]
　　<1.5. Control information and the control channel>
　　 of control information in the form
　the base station apparatus 1 and terminal apparatus 2, the signaling of the respective control information (notification, notification, set) for, can be used various methods . Signaling control information may be performed in different layers (layers). Figure 10 is a diagram showing a protocol stack of the control plane (Control-plane, C-plane ). The control plane of the terminal device 2 includes a physical (PHY) layer, MAC layer, RLC layer, PDCP layer, RRC layer, the NAS layer. The control plane of the base station device 1 includes a physical (PHY) layer, MAC layer, RLC layer, PDCP layer, the RRC layer. MME control plane includes NAS layer. Signaling control information includes physical layer physical layer signaling is a signaling through (layer), RRC signaling is a signaling through the RRC layer, and the like MAC signaling is a signaling through the MAC layer. RRC signaling is dedicated RRC signaling for notifying the specific control information to the terminal device 2 (Dedicated RRC signaling), or is the common RRC signaling for notifying the specific control information to the base station apparatus 1 (Common RRC signaling) . MAC layer, RLC layer, PDCP layer, RRC layer, NAS layer such as higher-level layer as viewed from the physical layer is also called an upper layer, the base station apparatus 1 and terminal apparatus 2 the higher layer processing unit 101 and the higher layer processing comprising It is processed in parts 201. Further, such RRC signaling or MAC signaling, signaling an upper layer is used as viewed from the physical layer is also called high layer signaling.
[0126]
　RRC signaling is achieved by signaling the RRC parameters. MAC signaling is achieved by signaling the MAC Control element. Physical layer signaling is downlink control information (DCI: Downlink Control Information) or uplink link control information: the (UCI Uplink Control Information) is achieved by signaling. RRC parameters and MAC Control element is transmitted by using the PDSCH or PUSCH. DCI is transmitted using the PDCCH or EPDCCH. UCI is transmitted using the PUCCH or PUSCH. RRC signaling and MAC signaling is used to signal the quasi-static (semi-static) control information, also referred to as quasi-static signaling. Physical layer signaling, dynamic (dynamic) control information used for signaling, also referred to as dynamic signaling. DCI is used for such scheduling scheduling or PUSCH for PDSCH. The UCI, CSI reporting, HARQ-ACK reporting and / or scheduling request: used, such as for (SR Scheduling Request).
[0127]
　　
　DCI is notified using the DCI format with fields defined in advance. Fields defined in DCI format, predetermined information bits are mapped. The DCI downlink scheduling information, uplink scheduling information, side links scheduling information, requests aperiodic CSI reporting, or notifies the uplink transmission power command.
[0128]
　DCI format which the terminal device 2 monitors is determined by the transmission mode set for each serving cell. That is, a part of the DCI format which the terminal device 2 monitors can vary from transmission mode. For example, the terminal device 2 downlink transmission mode 1 is set, monitor the DCI format 1A and DCI format 1. For example, the terminal device 2 downlink transmission mode 4 has been set, monitor the DCI format 1A and the DCI format 2. For example, the terminal device 2 uplink transmission mode 1 is set, monitor the DCI format 0. For example, the terminal device 2 uplink transmission mode 2 is set, monitor the DCI format 0 and DCI format 4.
[0129]
　Regulatory region PDCCH is arranged to notify the DCI for the terminal device 2 is not notified, the terminal device 2 detects the DCI for the terminal device 2 by blind decoding (blind detection). Specifically, the terminal device 2, the serving cell, to monitor a set of PDCCH candidates. Monitoring, for each of the PDCCH in the set, means to attempt to decode the DCI formats all monitors. For example, the terminal device 2, all of the aggregation level that may be transmitted to the terminal device 2, PDCCH candidate and attempts to decode the DCI format. Terminal 2 recognizes DCI decoding (detection) was successfully (PDCCH) as DCI (PDCCH) to the terminal device 2.
[0130]
　Relative DCI, cyclic redundancy check (CRC: Cyclic Redundancy Check) is added. CRC is used for error detection and DCI blind detection of DCI. CRC (CRC parity bits) is scrambled by the RNTI (Radio Network Temporary Identifier). Terminal device 2 on the basis of the RNTI, to detect whether DCI for the terminal device 2. Specifically, the terminal device 2, the bit corresponding to the CRC, performs descrambling with a predetermined RNTI, to extract the CRC, to detect whether the corresponding DCI is correct.
[0131]
　RNTI is defined or set in accordance with the purpose and application of DCI. RNTI is, C-RNTI (Cell-RNTI), SPS C-RNTI (Semi Persistent Scheduling C-RNTI), SI-RNTI (System Information-RNTI), P-RNTI (Paging-RNTI), RA-RNTI (Random Access -RNTI), TPC-PUCCH-RNTI (Transmit Power Control-PUCCH-RNTI), TPC-PUSCH-RNTI (Transmit Power Control-PUSCH-RNTI), temporary C-RNTI, M-RNTI (MBMS (Multimedia Broadcast Multicast Services ) -RNTI), and, including eIMTA-RNTI, the CC-RNTI.
[0132]
　C-RNTI and SPS C-RNTI is a terminal device 2 in the base station apparatus 1 in the (cell) is a unique RNTI, an identifier for identifying the terminal device 2. C-RNTI is used to schedule the PDSCH or PUSCH in one subframe. SPS C-RNTI is used to periodic scheduling activation or release resources for PDSCH or PUSCH. Control channel having a scrambled CRC in SI-RNTI is used to schedule SIB (System Information Block). Control channel having a scrambled CRC in P-RNTI is used to control the paging. Control channel having a scrambled CRC in RA-RNTI is used to schedule a response to RACH. Control channel having a scrambled CRC in TPC-PUCCH-RNTI is used to perform the power control of the PUCCH. Control channel having a scrambled CRC in TPC-PUSCH-RNTI is used to perform the power control of the PUSCH. Temporary control channel having a scrambled CRC in C-RNTI is used by the mobile station device is C-RNTI is not set or recognized. Control channel having a scrambled CRC in M-RNTI is used to schedule the MBMS. Control channel having a scrambled CRC in eIMTA-RNTI, in the dynamic TDD (eIMTA), used for notifying the information about the TDD UL / DL Configuration of TDD serving cell. Control channel having a scrambled CRC in CC-RNTI (DCI), in LAA secondary cell is used to notify the set of proprietary OFDM symbol. It should be noted, is not limited to the above-mentioned RNTI, the DCI format by the new RNTI
[0133]
　Scheduling information (downlink scheduling information, uplink scheduling information, side links scheduling information), as the scheduling of the frequency domain, including information for performing scheduling resource block or resource block group to the unit. Resource block group is a set of contiguous resource blocks indicates the resources allocated for the terminal apparatus to be scheduled. The size of the resource block group is dependent on the system bandwidth.
[0134]
　　 DCI is transmitted using a control channel such as PDCCH or EPDCCH. Terminal device 2 monitors the one or more sets of PDCCH candidates Activating been serving cell and / or EPDCCH set of candidate set by RRC signaling. Here, the monitoring is to attempt to decode PDCCH and / or EPDCCH in the set corresponding to the DCI format to be all monitors.
[0135]
　Set of the set or the EPDCCH candidate of PDCCH candidates are also referred to as a search space. The search space, shared search space (CSS) and the terminal-specific search space (USS) is defined. CSS may be defined only for the search space on the PDCCH.
[0136]
　CSS (Common Search Space) is a search space that is set on the basis of specific parameters and / or predefined parameters to the base station apparatus 1. For example, CSS is a search space used in common by a plurality of terminal devices. Therefore, the base station apparatus 1 by mapping the common control channel by a plurality of terminal devices to CSS, resources for transmitting is reduced control channel.
[0137]
　USS (UE-specific Search Space) is a search space that is set using the parameters specific to at least the terminal device 2. Therefore, USS is a unique search spaces on the terminal device 2, the base station apparatus 1 can transmit individual-specific control channel to the terminal device 2 by USS. Therefore, the base station apparatus 1 can efficiently mapping specific control channels to a plurality of terminal devices.
[0138]
　USS may be set to be used in common to a plurality of terminal devices. For common USS is set to a plurality of terminal devices, parameters specific to the terminal apparatus 2 is set to be the same value among the plurality of terminal devices. For example, unit set to the same parameters between the plurality of terminal devices, cell, and the like transmission point or a group of a predetermined terminal device.
[0139]
　Search space of aggregation level each is defined by a set of PDCCH candidates. Each PDCCH, are transmitted using a set of one or more CCE (Control Channel Element). The number of CCE used for one PDCCH is also aggregation level is referred. For example, the number of CCE's used for one PDCCH is 1, 2, 4 or 8.
[0140]
　Search space of aggregation level each is defined by a set of EPDCCH candidate. Each EPDCCH, is transmitted using a set of one or more ECCE (Enhanced Control Channel Element). The number of ECCE used in one EPDCCH is also aggregation level is referred. For example, the number of ECCE used in one EPDCCH is 1,2,4,8,16 or 32.
[0141]
　Count of the number or EPDCCH candidates PDCCH candidates is determined based on at least the search space and aggregation level. For example, in CSS, the number of PDCCH candidates in aggregation level 4, and 8 are respectively 4 and 2. For example, in the USS, the number of PDCCH candidates in aggregation 1, 2, 4, and 8 are each 6,6,2 and 2.
[0142]
　Each ECCE is composed of a plurality of EREG (Enhanced resource element group). EREG is used to define the mapping for resource elements EPDCCH. In each RB pair are numbered from 0 to 15, 16 EREG is defined. That is, in each RB pair, EREG0 ~ EREG15 are defined. In each RB pair, EREG0 ~ EREG15, relative to resource elements other than resource elements in which a predetermined signal and / or channel is mapped, in favor of a frequency direction, it is periodically defined. For example, resource elements EPDCCH demodulation reference signal associated with the transmitted on antennas ports 107-110 are mapped are not defined as EREG.
[0143]
　The number of ECCE used in one EPDCCH depends on EPDCCH format is determined based on other parameters. The number of ECCE used in one EPDCCH is also aggregation level is referred. For example, the number of ECCE used in one EPDCCH the number of resource elements which can be used for EPDCCH transmission in one RB pair based the like on the transmission method of EPDCCH, is determined. For example, the number of ECCE used in one EPDCCH is 1,2,4,8,16 or 32. The number of EREG used in one ECCE is determined based on the type and the type of cyclic prefix sub-frame, 4 or 8. Method of transmitting the EPDCCH, distributed transmission (Distributed Transmission) and localized transmission (the Localized Transmission) is supported.
[0144]
　EPDCCH may use distributed transmission or localized transmission. Distributed transmission and localized transmission, the mapping of ECCE is different for EREG and RB pair. For example, in a distributed transmission, one ECCE is constructed of a EREG multiple RB pairs. In localized transmission, one ECCE is constructed of a EREG one RB pair.
[0145]
　The base station apparatus 1 to the terminal device 2 performs the setting for EPDCCH. Terminal device 2, based on the setting from the base station apparatus 1, for monitoring a plurality of EPDCCH. Set of RB pairs terminal device 2 for monitoring the EPDCCH can be set. Set of RB pair are referred to as EPDCCH set or EPDCCH-PRB set. To one of the terminal device 2 can be set more than one EPDCCH set. Each EPDCCH set consists of one or more RB pairs. Also, settings for EPDCCH can be performed separately for each EPDCCH set.
[0146]
　The base station apparatus 1 to the terminal device 2, can be set EPDCCH set of a predetermined number. For example, EPDCCH set up to two, as EPDCCH set 0 and / or EPDCCH set 1 can be set. Each EPDCCH set, can be constituted by a predetermined number of RB pairs. Each EPDCCH set constitute one set of ECCE. The number of ECCE constructed in one EPDCCH sets, the number of RB pairs is set as the EPDCCH set, and, based on the number of EREG used in one ECCE, it is determined. If the number of ECCE constructed in one EPDCCH sets is N, each EPDCCH set constitutes the ECCE, numbered 0 ~ N-1. For example, when the number of EREG used in one ECCE is 4, the EPDCCH set composed of four RB pairs constituting 16 ECCE.
[0147]
　　<1.6. Technical features>
　　 CA and DC according
　terminal device 2 includes a plurality of cells are set, it is possible to perform multi-carrier transmission. Communication terminal device 2 uses a plurality of cells is referred to as CA (carrier aggregation) or DC (dual connectivity). The contents described in this embodiment can be applied to each or some of the plurality of cells to be set to the terminal device 2. The cells that are set in the terminal apparatus 2, also referred to as the serving cell. Serving cell, and establishes communication with the terminal device 2, it can be said that the cell can transmit and receive data.
[0148]
　CA and DC, in the viewpoint of the physical layer, the communication with the cells of two or more different frequency bands is carried out. Terminals that support CA and DC 2 has a function of receiving signals from two or more cells simultaneously, or a function of transmitting a signal to the two or more cells simultaneously.
　CA Oite, a plurality of serving cells to be set, one primary cell and a:: (Secondary Cell SCell) ( PCell Primary Cell) and one or more secondary cells. The terminal device 2 that supports CA, one of the primary cell and one or more secondary cells may be set. Serving cell is a primary cell or a secondary cell.
[0149]
　In CA, a plurality of serving cells to be set, are temporally synchronized. Therefore, the boundary of a subframe of a plurality of serving cells to be set, are aligned. In CA, a plurality of serving cell, reception timing difference between different serving cell so as not to affect the MAC, are time synchronized.
[0150]
　Primary cell, the initial connection establishment (initial connection establishment) procedure is performed serving cell connection rebuild (connection re-establishment) serving to start the process, or a cell that has been indicated as the primary cell in the handover procedure. Primary cell, the operation on the primary frequency. Secondary cell may be set after construction or reconstruction of the connection. Secondary cell, the operation in the secondary frequency. It should be noted that the connection is also referred to as RRC connection.
[0151]
　DC is an operation of the radio resource specified terminal device 2 consumes provided from at least two different network point. Network point, the master base station (MeNB: Master eNB) and secondary base station apparatus: a (SeNB Secondary eNB). Dual connectivity, the terminal device 2 is to perform an RRC connection with at least two network points. In dual connectivity, two networks points may be connected by a non-ideal backhaul (non-ideal backhaul).
[0152]
　In DC, is connected to at least S1-MME (Mobility Management Entity), it referred to serving base station apparatus 1 of the core network mobility anchor as the master base station device. Also referred to the base station apparatus 1 is not a master base station apparatus which provides an additional radio resource to the terminal device 2 and the secondary base station device. Groups of the serving cell that is associated with the master base station device, a master cell group (MCG: Master Cell Group) also is referred. Groups of the serving cell which are associated with secondary base station apparatus, the secondary cell group (SCG: Secondary Cell Group) also is referred. Incidentally, a group of serving cell, are referred to as cell group (CG).
[0153]
　In DC, the primary cell belongs to the MCG. Also, in SCG, a secondary cell corresponding to the primary cell primary secondary cell (PSCell: Primary Secondary Cell) and referred. The PSCell (base station apparatus constituting the PSCell), the same functions as PCell (base station apparatus constituting the PCell) (capacity, performance) may be supported. In addition, the PSCell, only some of the functions of the PCell may be supported. For example, the PSCell, using different search space and CSS or USS, function for PDCCH transmission may be supported. In addition, PSCell may always be in a state of activation. Further, PSCell is a cell that can receive PUCCH.
[0154]
　In DC, radio bearer (data radio bearer (DRB: Date Radio Bearer), and / or signaling radio bearer (SRB: Signaling Radio Bearer)) may be assigned individually by the MeNB and SeNB.
[0155]
　The DC, 2 kinds of operations synchronous DC and asynchronous DC are defined. In synchronous DC, between two CG to be set are temporally synchronized. Therefore, the boundary between two CG subframes to be set are aligned. In synchronous DC, the terminal device 2, can tolerate reception timing difference up to 33 microseconds and a maximum 35.21 transmission timing difference of microseconds. In asynchronous DC, between two CG is set may not be temporally synchronized. Therefore, the boundary between two CG subframes to be set may or may not be uniform. In asynchronous DC, the terminal device 2, can tolerate reception timing difference of the maximum 500 microseconds.
[0156]
　Figure 11 is a diagram showing an example of a radio protocol architecture for DC. MeNB and SeNB each have a separate MAC, RLC, PDCP. In DC, MCG bearer, SCG bearer three bearers separation bearer exists. MCG bearer is a wireless protocol that is placed only in MeNB to using only MeNB resources. SCG bearer is a wireless protocol that is placed only in SeNB to use the SeNB resources. Separation bearer is a wireless protocol to be placed in both the eNB to use both MeNB resources and SeNB resources. In LTE the DC, RRC is placed MeNB. SRB is always set as the MCG bearer type. In performing DC of LTE and NR is, RRC of the LTE RRC and NR are present separately, the terminal device 2 is controlled by using either the RRC of LTE or NR. If the MeNB is operated by LTE, the terminal device 2 is controlled using the LTE RRC, if the MeNB is operated by NR, the terminal device 2 is controlled by using the RRC of NR.
[0157]
　Against MCG (PCell) and SCG (PSCell), may each be set individually duplex mode. MCG (PCell) and SCG (PSCell) may not be synchronized with each other. That is, the frame boundaries and frame boundaries of the SCG of MCG may not coincide. Against MCG (PCell) and SCG (PSCell), parameters for the plurality of timing adjustment (TAG: Timing Advance Group) may be set independently. In dual connectivity, the terminal device 2, the UCI for a cell in an MCG transmitted only MeNB (PCell), transmitting the UCI for a cell in SCG only SeNB (pSCell). In the transmission of each of UCI, transmission method using PUCCH and / or PUSCH is applied in each cell group.
　PUCCH and PBCH (MIB) is transmitted only in PCell or PSCell. Further, PRACH, as long as the plurality of TAG (Timing Advance Group) is not set between the cells in the CG, it is transmitted only in PCell or PSCell.
[0158]
　In PCell or PSCell, it may be performed SPS (Semi-Persistent Scheduling) and DRX (Discontinuous Transmission). In the secondary cell, it may be subjected to the same DRX as the PCell or PSCell of the same cell group.
[0159]
　In the secondary cell, the information / parameters related to setting of the MAC is covalently basically, the same cell group PCell or PSCell. Some of the parameters may be set for each secondary cell. Some of the timer or counter, may be applied to only PCell or PSCell.
[0160]
　In CA, the cell cell and FDD scheme TDD scheme is applied is applied may be aggregated. If the cell TDD cell and FDD is that is applied is applied are aggregated, it is possible to apply the present disclosure with respect to one of the cells where the cell and FDD TDD is applied is applied.
[0161]
　Terminal device 2, the information (supportedBandCombination) showing a band combinations CA and / or DC is supported by the terminal device 2, and transmits to the base station apparatus 1. The terminal apparatus 2, for each band combination, information indicating whether it supports the simultaneous transmission and reception of the plurality of serving cells in the different bands, and transmits to the base station apparatus 1.
[0162]
　　
　The base station apparatus 1, as a method for resource allocation of PDSCH and / or PUSCH to the terminal device 2, can be used several ways. The method of resource allocation include dynamic scheduling, semi-persistent scheduling, multi-subframe scheduling, and cross subframe scheduling.
[0163]
　In dynamic scheduling, one DCI performs resource allocation in one subframe. Specifically, PDCCH or EPDCCH in a certain sub-frame, performs scheduling for PDSCH in that subframe. PDCCH or EPDCCH in a certain sub-frame, performs scheduling for PUSCH in a given subframe after that sub-frame.
[0164]
　In the multi-subframe scheduling, one DCI performs resource allocation in one or more sub-frames. Specifically, PDCCH or EPDCCH in a certain sub-frame, performs scheduling for PDSCH in one or more sub-frames after the predetermined number than the sub-frame. PDCCH or EPDCCH in a certain sub-frame, performs scheduling for PUSCH in one or more sub-frames after the predetermined number than the sub-frame. The predetermined number may be an integer greater than or equal to zero. The predetermined number may be predefined, may be determined on the basis of the physical layer signaling and / or RRC signaling. In the multi-subframe scheduling may be contiguous subframes Scheduling, subframe having a predetermined period may be scheduled. The number of subframes to be scheduled may be predefined, may be determined on the basis of the physical layer signaling and / or RRC signaling.
[0165]
　In cross subframe scheduling, one DCI performs resource allocation in one subframe. Specifically, PDCCH or EPDCCH in a certain sub-frame, performs scheduling for PDSCH in one sub-frame after the predetermined number than the sub-frame. PDCCH or EPDCCH in a certain sub-frame, performs scheduling for PUSCH in one subframe after the predetermined number than the sub-frame. The predetermined number may be an integer greater than or equal to zero. The predetermined number may be predefined, may be determined on the basis of the physical layer signaling and / or RRC signaling. In cross subframe scheduling may be contiguous subframes Scheduling, subframe having a predetermined period may be scheduled.
[0166]
　In semi-persistent scheduling (SPS), one DCI performs resource allocation in one or more sub-frames. The terminal apparatus 2, information about the SPS is configured by RRC signaling, when detecting a PDCCH or EPDCCH to enable SPS, to enable processing regarding SPS, given PDSCH and / or on the basis of the settings relating to SPS PUSCH to receive. Terminal device 2, if the SPS finds the PDCCH or EPDCCH to release the SPS when it is effective, the SPS release (disable) to stop the reception of the predetermined PDSCH and / or PUSCH. SPS release may be performed on the basis of when a predetermined condition is satisfied. For example, when receiving the data of a predetermined number of empty transmission, SPS is released. Empty transmission of data to release the SPS corresponds to MAC PDU including zero MAC SDU (Service Data Unit) (Protocol Data Unit).
[0167]
　Information about the SPS by RRC signaling, SPS C-RNTI is an RNTI of SPS, information about the period (interval) to be scheduled for PDSCH, information on the period (interval) to be scheduled for PUSCH, on setting for releasing the SPS information, and / or a number of HARQ processes in SPS. SPS is supported only on the primary cell and / or primary secondary cell.
[0168]
　　
　FIG. 12 is a diagram showing an example of an LTE downlink resource element mapping in the present embodiment. In this example, in the case the number of OFDM symbols one resource block and one slot is 7, the set of resource elements are shown in one resource block pair. Also, seven OFDM symbols in the first half in the time direction in the resource block pair, slot 0 (the first slot) also is referred. 7 OFDM symbols in the second half in the time direction of a resource block pair, slot 1 (second slot) also is referred. Further, each of the OFDM symbols in each slot (resource blocks), represented by OFDM symbol numbers 0-6. Further, each of the frequency direction of a sub-carrier in the resource block pair, indicated by subcarrier numbers 0 to 11. Incidentally, when the system bandwidth is constituted by a plurality of resource blocks, the sub-carrier number is assigned differently across the system bandwidth. For example, the system bandwidth can consist of six resource blocks, subcarriers subcarrier numbers 0 to 71 is assigned are used. In the description of this embodiment, the resource elements (k, l) is a resource elements indicated by subcarrier number k and the OFDM symbol number l.
[0169]
　Resource elements indicated by R0 ~ R3 are each shows a cell-specific reference signal of the antenna ports 0-3. In the following, the cell-specific reference signal of the antenna ports 0-3 are also referred to as CRS (Cell-specific RS). In this example, CRS is the case of four antenna ports can be varied in number. For example, CRS may use one antenna port or two antenna ports. Further, CRS can be based on the cell ID, and shifts the frequency direction. For example, CRS can be based on the remainder of dividing a cell ID in 6 shifts the frequency direction.
[0170]
　Resource elements indicated by C1 ~ C4 are indicating channel state information reference signal antenna ports 15 ~ 22 (CSI-RS). Resource elements indicated by C1 ~ C4 show the CSI-RS CDM groups 1 ~ CDM group 4, respectively. CSI-RS is composed of an orthogonal sequence using Walsh code (orthogonal code), and scrambling code using the pseudo random sequence. Furthermore, CSI-RS, within CDM group, are code division multiplexed by orthogonal codes for each Walsh code, and the like. Furthermore, CSI-RS is between CDM groups are frequency division multiplexed (FDM) with each other.
[0171]
　CSI-RS for antenna ports 15 and 16 are mapped to C1. CSI-RS for antenna ports 17 and 18 are mapped to C2. CSI-RS for antenna ports 19 and 20 are mapped to C3. CSI-RS for antenna ports 21 and 22 are mapped to C4.
[0172]
　Number of antenna ports of CSI-RS is more defined. CSI-RS can be set as a reference signal corresponding to the eight antenna ports of the antenna ports 15-22. Furthermore, CSI-RS can be set as a reference signal corresponding to the four antenna ports of the antenna ports 15-18. Furthermore, CSI-RS can be set as a reference signal corresponding to two antenna ports of antenna ports 15-16. Furthermore, CSI-RS can be set as a reference signal corresponding to a single antenna port of the antenna ports 15. CSI-RS can be mapped onto some subframes, for example, it may be mapped to each of a plurality of subframes. Mapping pattern for resource elements of CSI-RS is more defined. Further, the base station apparatus 1 to the terminal device 2, it is possible to set a plurality of CSI-RS.
[0173]
　CSI-RS can transmit power to zero. Transmission power CSI-RS of zero is referred to as zero-power CSI-RS. Zero power CSI-RS is set independently of the CSI-RS for antenna ports 15-22. Incidentally, CSI-RS for antenna ports 15-22 are referred to as non-zero power CSI-RS.
[0174]
　The base station apparatus 1, through RRC signaling, as specific control information to the terminal device 2, sets the CSI-RS. The terminal device 2 through the RRC signaling by the base station apparatus 1, CSI-RS is set. Further, the terminal device 2, CSI-IM resource is a resource for measuring interference power can be set. Terminal device 2, based on the setting from the base station apparatus 1, CRS, using CSI-RS and / or CSI-IM resource, generates the feedback information.
[0175]
　Resource elements indicated by D1 ~ D2 shows the DL-DMRS CDM groups 1 ~ CDM group 2, respectively. DL-DMRS is constructed using an orthogonal sequence (orthogonal code) using Walsh codes, and a scrambling sequence according to a pseudo random sequence. Also, DL-DMRS is independent for each antenna port, can be multiplexed within each resource block pair. DL-DMRS is by CDM and / or FDM, they are orthogonal to each other among the antenna ports. DL-DMRS, within CDM group are CDM by the orthogonal codes. DL-DMRS is between CDM groups, the FDM each other. DL-DMRS in the same CDM group are respectively mapped to the same resource element. DL-DMRS in the same CDM group are different orthogonal sequences used respectively between antenna ports, their orthogonal sequences are mutually orthogonal. DL-DMRS for PDSCH may use some or all of the eight antenna ports (antenna ports 7-14). That, PDSCH associated with the DL-DMRS can MIMO transmission of up to eight ranks. DL-DMRS for EPDCCH may use some or all of the four antenna ports (antenna ports 107-110). Also, DL-DMRS in accordance with the number of ranks of the associated channel, it is possible to change the number of CDM spreading code length and mapped the resource elements.
[0176]
　DL-DMRS for PDSCH to be transmitted at the antenna port 7, 8, 11 and 13 are mapped to resource elements indicated by D1. DL-DMRS for PDSCH to be transmitted at the antenna port 9, 10, 12 and 14 are mapped to resource elements indicated by D2. Also, DL-DMRS for EPDCCH to be transmitted by the antenna port 107 and 108 are mapped to resource elements indicated by D1. DL-DMRS for EPDCCH to be transmitted by the antenna port 109 and 110 are mapped to resource elements indicated by D2.
[0177]
　　
　FIG. 13 is a diagram showing an example of a downlink resource elements mapping NR in this embodiment. 13, when the parameter set 0 is used, shows a set of resource elements in a given resource. Given resource shown in FIG. 13 is a resource of the same time length and bandwidth as a single resource block pair in LTE.
[0178]
　In NR, given resource is referred to as NR-RB (NR resource blocks). Given resource, NR-PDSCH or NR-PDCCH allocation unit, the unit to define mappings for the resource elements of a given channel or a predetermined signal, or the like can be used in the unit to which a parameter set is set .
[0179]
　In the example of FIG. 13, the predetermined resource, 14 OFDM symbols represented by the OFDM symbol numbers 0 to 13 in the time direction, and, consists of 12 subcarriers indicated by subcarrier numbers 0 to 11 in the frequency direction It is. If the system bandwidth is comprised of a plurality of predetermined resources, the sub-carrier number is assigned across the system bandwidth.
[0180]
　Resource elements indicated by C1 ~ C4 are indicating channel state information reference signal antenna ports 15 ~ 22 (CSI-RS). Resource elements indicated by D1 ~ D2 shows the DL-DMRS CDM groups 1 ~ CDM group 2, respectively.
[0181]
　Figure 14 is a diagram showing an example of a downlink resource elements mapping NR in this embodiment. 14, when the parameter set 1 is used, shows a set of resource elements in a given resource. Given resource shown in FIG. 14 is a resource of the same time length and bandwidth as a single resource block pair in LTE.
[0182]
　In the example of FIG. 14, the predetermined resource, seven OFDM symbols represented by the OFDM symbol numbers 0-6 in the time direction, and, consists of 24 subcarriers indicated by subcarrier numbers 0-23 in the frequency direction It is. If the system bandwidth is comprised of a plurality of predetermined resources, the sub-carrier number is assigned across the system bandwidth.
[0183]
　Resource elements indicated by C1 ~ C4 are indicating channel state information reference signal antenna ports 15 ~ 22 (CSI-RS). Resource elements indicated by D1 ~ D2 shows the DL-DMRS CDM groups 1 ~ CDM group 2, respectively.
[0184]
　Figure 15 is a diagram showing an example of a downlink resource elements mapping NR in this embodiment. 15, when the parameter set 1 is used, shows a set of resource elements in a given resource. Given resource shown in FIG. 15 is a resource of the same time length and bandwidth as a single resource block pair in LTE.
[0185]
　In the example of FIG. 15, the predetermined resource, 28 OFDM symbols as shown in the time direction in an OFDM symbol number 0 to 27, and, composed of six subcarriers indicated by subcarrier numbers 0-6 in the frequency direction It is. If the system bandwidth is comprised of a plurality of predetermined resources, the sub-carrier number is assigned across the system bandwidth.
[0186]
　Resource elements indicated by C1 ~ C4 are indicating channel state information reference signal antenna ports 15 ~ 22 (CSI-RS). Resource elements indicated by D1 ~ D2 shows the DL-DMRS CDM groups 1 ~ CDM group 2, respectively.
[0187]
　　
　If multiple cell groups to the terminal device 2 is set, the terminal device 2 by using a DC power control mode 1 or the DC power control mode 2, the uplink physical channels and / or performs transmission power control of the uplink physical signals. Terminal device 2, if the total transmit power uplink physical channels and / or uplink physical signal to be transmitted is requested not to exceed the maximum uplink transmission power may be sent at that transmit power. On the other hand, if the sum of the transmission power exceeds the maximum uplink transmission power, to scale the transmit power in accordance with the provisions stipulated in either DC power control mode 1 or the DC power control mode 2, or, stopping the transmission of the predetermined uplink physical channels and / or uplink physical signals.
[0188]
　DC power control mode 1, when the terminal device 2 supports synchronous DC, and if DC power control mode 1 is set from the upper layer, is set to the terminal device 2. DC power control mode 1 assumes the state where the network between the master base station device and the secondary base station device is synchronized, the difference in the maximum uplink timing between the serving cell belonging to different cell groups exceeds a predetermined value If was below it is operated. That is operated on the assumption states that subframe boundaries and sub-frame boundary of SCG of MCG match.
[0189]
　The DC power control mode 1, the terminal device 2 performs prioritized based on the content of information transmitted type of the uplink physical channel, or the uplink physical channel, to distribute the transmit power. The terminal device 2, when the priority is the same between CG distributes power in preference to MCG.
[0190]
　It shows an example of a priority and power distribution of the power distributor in the DC power control mode 1. The terminal apparatus 2, PRACH, PUCCH or PUSCH involving UCI including HARQ-ACK and / or SR, HARQ-ACK also PUCCH or PUSCH involving UCI containing neither SR, PUSCH without UCI, transmission in the order of the SRS power adjust the, assign. Furthermore, when having the same uplink physical channel in two CG is, MCG transmission power is prioritized is adjusted than SCG, assigned. The adjustment of the transmission power, the following equation (a) is used.
[0191]
[Number 1]

[0192]
　Specifically, the transmission power of each uplink physical channels and SRS are to satisfy the conditions not exceeding S (i1) of the formula (a), it is adjusted. Here, the (formula a) of i1 is the first CG subframe number, i2 is the second CG subframe number, P CMAX (i1, i2) is the period in which the sub-frame i1 and the sub-frame i2 overlap maximum uplink transmit power, P u sum of transmission power of (i1) is CG1 uplink physical channel allocated already, P q transmission (i2) CG2 uplink already allocated physical channel and / or SRS the total power, P ' q (i2) is still the total transmit power uplink physical channels and / or SRS of CG2 transmission power is not assigned requests, gamma CG2 is CG2 uplink instructed from the higher layer proportion of guaranteed power minimum reserved transmission is.
[0193]
　DC power control mode 2, the terminal apparatus 2 may support asynchronous DC, and if DC power control mode 1 from the upper layer is not set, is set in the terminal apparatus 2. DC power control mode 2 is also operable in a network is not synchronized between the master base station device and the secondary base station device. That is operated on the assumption states that subframe boundaries and sub-frame boundary of SCG of MCG do not match.
[0194]
　The DC power control mode 2, the terminal device 2, while a minimum ensuring guaranteed power for different cell groups are distributed into uplink physical channels and / or uplink physical signal generated surplus power first.
[0195]
　It shows an example of a power distribution in the DC power control mode 2. If the sub-frame i1 of CG1 overlaps the subframe i2-1 and subframe i2 of CG2, the terminal device 2, P is determined by the following equation (b) CG1 and (i1) as an upper limit, assigned to CG1 to determine the transmission power to be.
[0196]
[Number 2]

[0197]
　Specifically, PUCCH generated in the sub-frame i1, PUSCH, and / or SRS is the sum of the power required by the P CG1 if it exceeds (i1), the P CG1 so as to satisfy the conditions not exceeding (i1) , to scale the transmit power of each uplink physical channels and / or uplink physical signals. Here, P (Formula b) q total transmit power (i1) is the uplink physical channel and / or SRS of CG1 requests, P CMAX (i1, I2-1) subframe i1 and the subframe i2- maximum uplink transmit power period 1 overlap, P PRACH_CG1 (i1) transmission power of the PRACH sub-frame i1 of CG1, P PRACH_CG2 (I2-1) is the transmit power of the PRACH sub-frame I2-1 of CG2, P PRACH_CG2 (i2) transmission power of PRACH subframe i2 of CG2, P CG2 (I2-1) is PUCCH occurred in subframe I2-1 of CG2, PUSCH, and / or the upper limit value of the transmission power of the SRS, gamma CG2 is the ratio of the guaranteed power minimally secured, the uplink transmission of CG2 instructed from the higher layer.
[0198]
　　
　In NR, a physical channel and / or physical signal may be transmitted by the self-contained transmission (self-contained transmission). Figure 16 shows an example of a frame structure of a self-contained transmission in the present embodiment. The self-contained transmission, one transmission and reception, the downlink successive transmissions from the head, GP, and consists of consecutive downlink transmission order. The successive downlink transmission, at least one downlink control information and downlink RS (e.g., DMRS) are included. As downlink control information instructing transmission of the uplink physical channel included in the uplink transmission to reception, or continuous downlink physical channels included in a downlink transmission to the continuous. If the downlink control information instructs the receiving of the downlink physical channel, the terminal device 2 attempts to receive the downlink physical channel based on the downlink control information. Then, the terminal apparatus 2, the reception success or failure of the downlink physical channel (decoding success or failure), and transmits the uplink control channel included in the uplink transmission to be allocated after GP. On the other hand, if the downlink control information instructs the transmission of the uplink physical channels, for transmission, including the uplink physical channel transmitted based on the downlink control information on uplink transmission. Thus, the downlink control information, by switching flexibly transmit the transmission and downlink data uplink data, it is possible to respond immediately to changes in the traffic ratio of uplink and downlink. Further, by notifying in uplink transmission immediately after the reception success or failure of the downlink, it is possible to realize low delay communication of the downlink.
[0199]
　Unit slot time, downlink transmission, the smallest time unit to define a GP or uplink transmission. Unit slot time, downlink transmission, is reserved for either the GP or uplink transmission. Some unit slot time, both the downlink transmission and uplink transmission is not included. Unit slot time may be the minimum transmission time of the channel associated with the DMRS included in the unit slot time. One unit slot time is, for example, the sampling interval (T a NR s is defined as an integer multiple of) or symbol length.
[0200]
　A unit frame time may be a minimum time of transmission or reception of the physical channel indicated by a single scheduling information. A unit frame time may be a minimum amount of time the transport block is transmitted. Unit slot time may have a maximum transmission time of the channel associated with the DMRS included in the unit slot time. A unit frame time may be a unit time for determining the uplink transmission power in the terminal device 2. A unit frame period, may be referred to as a subframe. Units frame time, downlink transmission only, uplink transmission only, three types of combinations of uplink transmission and downlink transmission are present. One unit frame time, for example, the sampling interval of the NR (T s ), is defined as an integer multiple of the symbol length or unit slot time.
[0201]
　Reception time is the one reception time. Receiving time, one downlink is the time of the transaction data uplink or side links. One transceiver and another between the transmission and reception may be any physical channels and physical signals also occupied by the time not transmitted (gap) in the link. The reception time comprises physical channel downlink, uplink or control information on the scheduling of side links, is transmitted. Transmission and reception time, HARQ-ACK may include a physical channel transmitted for the downlink transport block transmitted by the transmission and reception time. Terminal device 2 does not mean the CSI measured at different reception times. Receiving time may also be referred to as TTI. One transceiver time, for example, the sampling interval of the NR (T s ), symbol length, the unit slot time, or defined by an integral multiple of a unit frame time.
[0202]
　　
　terminal device 2 may not support all defined functionality in LTE and NR. Instead, the terminal device 2, the information about the support for a predetermined function terminal device capability (UE radio access capability, UE capability ) notifies the base station apparatus 1 by. Thus, the base station apparatus 1, it is possible to recognize the function of the terminal device 2 is supported (executable functions), accommodates the terminal device 2 having various functions efficiently operate a radio system can do. The terminal device capability is equivalent to an example of the "control information regarding the communication mode supporting".
[0203]
　May also function to not necessarily support the terminal device 2 selection function (optional function), a function of the terminal device 2 must always be supported is referred to as a required function (Mandatori function). The correspondence relation does not exist the function of the parameters of the terminal device capability may be a mandatory feature.
[0204]
　The terminal capability is a parameter indicating whether the terminal apparatus 2 supports the function associated with the terminal capability. In other words, the terminal device capability is that the terminal device 2 is mounted its function, and it has met the test requirements have been defined for the function, a parameter indicating.
[0205]
　Figure 17 is a diagram showing a procedure of transfer (transmission) of the terminal device capability. Parameters of the terminal device capabilities from RRC connection (RRC_CONNECTED) mode of the terminal device 2, is transferred (transmitted) by the RRC signaling (higher layer processing unit 201). Parameters of the terminal device capability is transferred from the higher layer processing unit 201 (transmission). The base station apparatus 1 (EUTRAN), the terminal device capability queries to the terminal device 2 (UECapabilityEnquiry, terminal capability inquiry) forwards the message (transmits). Terminal capability inquiry, LTE, NR, and / or is used to request transfer (transmission) of the terminal device capability to other RAT. Terminal apparatus 2 receives the terminal capability inquiry transfers the RAT of the terminal device capability corresponding to the request contained in the terminal device capabilities query to the base station apparatus 1 is included in the terminal device capability information (UECapabilityInformation) message.
[0206]
　In the present embodiment, the terminal device capability is preferably sent in RRC signaling is not limited to RRC signaling may also be sent in other layers. Specifically, the terminal device capability may be sent in MAC signaling. For example, the terminal device capability is transmitted is included in the MAC CE (Control Element). Or it may be sent in the physical layer signaling. For example, the terminal device capability is, PBCH, PCFICH, PHICH, PDCCH, may be sent EPDCCH and / or PDSCH.
[0207]
　Incidentally, as shown in FIG. 18, the terminal device 2, during the initial connection may send a terminal capability information without request by the terminal device capability query. In that case, the terminal device capability information may be transmitted included in the random access, message 3 (Msg3).
[0208]
　　 LTE terminal device capability (UE-EUTRA-Capability) is, the LTE terminal category (UE category), LTE support band (supportedBand), or, LTE and LTE Support list of band combination (supportedBandCombination), including parameters such as. Parameters of LTE and LTE support band combination, parameter indicating whether the terminal apparatus 2 in band combination corresponding to the parameter to support DC (DC support, dc-Support) including. Further, the DC support, including parameters (asynchronous) that indicates whether or not to support asynchronous DC.
[0209]
　LTE terminal device category is defined by a combination of the downlink capabilities and LTE uplink capabilities of LTE. The terminal device category for LTE downlink (UE category DL) denotes a downlink capabilities of LTE, the terminal device category for LTE uplink (UE category UL) denotes the LTE uplink capabilities. The LTE downlink capability, maximum number of bits of the DL-SCH transport blocks received in one TTI, the total number of soft buffer bits, the maximum supported number of layers in the spatial multiplexing of the downlink, and the like. The LTE uplink capability, maximum number of bits of the UL-SCH transport blocks transmitted in one TTI, 64QAM support in the uplink, and the like. It may also be notified by also uplink capabilities supported 256QAM in the uplink.
[0210]
　LTE support band (supportedBand) and LTE and LTE support band combination (supportedBandCombination) is used to notify the band by the terminal device 2 is supported by the base station apparatus 1. LTE support band is specified by the indicator corresponding to the particular frequency.
[0211]
　Parameter indicating whether or not to support asynchronous, DC, indicates whether or not to support asynchronous DC and DC power control mode 2. It should be noted that, if the DC is supported to the band combination of LTE and LTE, function of the synchronization DC is always support.
[0212]
　　
　the terminal device capability of NR (UE-FEUTRA-Capability), the terminal device categories NR (UE-category-NR) , supported physical parameter sets, NR support band and a list of supported bands combination of LTE and NR (supportedBandCombinationEUTRAandFEUTRA), a parameter that indicates whether or not to support the ability to communicate in a stand-alone (standalone support NR, standalone-support-NR) , whether or not to support DC It may include parameters indicating the parameter (DC support LTE-NR, dc-support- LTE-NR) shown.
[0213]
　Terminal category NR indicates downlink capability of NR, uplink capabilities of NR, and / or the side links capability of NR. NR downlink capabilities of, similarly to the downlink capabilities LTE, employed maximum supported number of layers the maximum number of bits, the total number of soft buffer bits DL-SCH transport blocks received, the spatial multiplexing of the downlink in one TTI , indicating, for example. The NR uplink capabilities of, as in the LTE uplink capability, maximum number of bits of the UL-SCH transport blocks transmitted in one TTI, 64QAM support in the uplink, and the like. NR is the Quick capability, maximum maximum bit number of the SL-SCH transport blocks received in one TTI, the maximum number of bits of the SL-SCH transport blocks transmitted in one TTI, the spatial multiplexing of the side links support the number of layers, indicating, for example.
[0214]
　Further, the terminal device categories NR may be a parameter that specifies the physical parameters set supported. In other words, the terminal device categories NR is associated with a support set of bandwidth, and / or supported physical parameter set. For example, the terminal device 2 that supports the terminal category b1 supports parameter set 0, the terminal device 2 that supports the terminal category m1 support parameter set 1, the terminal device 2 that supports the terminal category c1 parameter to support the set 2. Thus, the terminal device categories NR terminal device 2 is supported by notifying the terminal device capabilities, the base station apparatus 1 eMBB, mMTC, and the classification of the terminal device 2 corresponding to each use case including URLLC It can be carried out. Note that in one terminal device, a plurality of terminal devices categories may be supported. The predetermined terminal device category may be a subset of the predetermined terminal device category. In other words, the terminal device 2 that supports a predetermined terminal device category may also support simultaneously a predetermined terminal device category. The parameter set associated with the terminal device categories, may only some of the parameters of the set that are described in FIG.
[0215]
　The terminal device categories NR may be a parameter that further specify whether or not to support standalone NR. That is, the terminal device categories given NR, in the band specified by the support band and / or support band combination, it may indicate that it is possible to connect a standalone NR. As a specific example, the terminal device 2 that supports the terminal category m1 or terminal category c1 also supports standalone NR.
[0216]
　The terminal device 2 among the parameter sets defined in advance, the supported parameter set can notify the terminal device capability of NR. Also, if the terminal device 2 supports multiple parameters, the terminal device 2 further those parameters set by FDM and / or TDM, can be notified whether or not the transmission and / or reception.
[0217]
　NR of the support band, shows a band that supports the operation of as NR cell. NR support band is specified by the indicator corresponding to the particular frequency. NR support band may include a parameter of the stand-alone support NR. In view of such information reduction parameter indicating the support band NR is the the same as the parameter indicating that it supports the initial connection to the NR cell preferred. That is, the terminal device 2, the initial connection to the NR cell in the band specified by NR support bands supported. Note that the support band, physical parameter sets supported may be associated. For example, support band includes a parameter indicating whether or not to support the set of physical parameters.
[0218]
　Support band combination of LTE and NR indicates a combination of bands CA and / or DC is supported between the LTE and NR.
[0219]
　An example of a support band combination of parameters configured are defined separately for each combination of RAT to be operated. For example, support band combination of LTE and LTE (supportedBandCombinationEUTRAandEUTRA), each supported band combination of LTE and NR (supportedBandEUTRAandFEUTRA), and support band combination of NR and NR (supportedBandFEUTRAandFEUTRA) is defined as a separate parameter list. Furthermore, the simultaneous transmission and simultaneous reception of a plurality of serving cells may be defined independently. For example, the parameter list of bands combination that applies only to the downlink, the parameter list to be applied only to the uplink may be individually defined. Incidentally, if the support band combination is notified from the terminal apparatus 2, the base station apparatus 1, the band combination specified in the support band combination, when the terminal device 2 is either at least CA and DC supports it may be assumed. The terminal apparatus 2, the band combination specified in the support band combination, support either at least CA and DC. It supports either CA and DC may be predefined, or may be specified in the parameter.
[0220]
　As an example of the parameter configuration of another support band combination, support band combination is defined in common regardless of the combination of RAT to be operated. Is defined as a parameter list for one retaining band combined (supportedBandCombination), for each of the band combinations, a parameter indicating that the LTE and / or NR are supported is set. As a specific example, the support band combinations combination of the first band and the second band is set in each of the first band and the second band LTE only (supportLTE), NR Only (supportNR), or LTE both NR (supportBothLTEandNR) parameter to indicate that the supported is set to. Further, on the support band combination, simultaneous transmission only, it may include a parameter indicating that only simultaneous reception or simultaneous transmission and reception are supported.
[0221]
　Standalone support NR is a parameter indicating whether it is possible to initial connection to NR cell. Standalone support NR may be defined as retaining band parameters common support bands individually parameters may be defined. Standalone support NR may be defined whether or not to support stand-alone as a predetermined value. For example, stand-alone support NR is 1 (Enable, True, supported) if a there were, the terminal device 2 supports standalone NR in its predetermined support band, stand-alone support NR is 0 (Disable, False, Not
supported The) in If a terminal device 2 does not support standalone NR in its predetermined support band. Further, depending on whether the field of stand-alone support NR exists, it may indicate whether or not to support stand-alone. For example, if there are fields standalone support NR in a given support band, the terminal device 2 to support a standalone NR in its predetermined support band. In other words, if in a given support band fields standalone support NR absent, the terminal device 2 does not support standalone NR in its predetermined support band. In addition, a stand-alone support NR further and information to support a stand-alone of NR in the license band is a frequency band required a license at the time of operation, of NR in the unlicensed band license is not required frequency bands when operating may be divided into and information to support a stand-alone.
[0222]
　DC support LTE-NR is a parameter indicating whether or not to support DC between LTE and NR. DC support LTE-NR may be set to support the band combining common but is preferably set for each supported band combination from the viewpoint of flexibility of the RF circuit and operational. DC support LTE-NR may be defined whether or not to support DC as the predetermined value. For example, if the DC support LTE-NR was 1 (Enable, True, supported), the terminal device 2 supports DC between LTE and NR at its predetermined support band combination, DC supports LTE-NR 0 ( Disable, False, Not
If the A were supported The), the terminal device 2 does not support DC between LTE and NR at its predetermined support band combinations. Further, depending on whether the field of DC support LTE-NR exists, it may indicate whether or not to support DC. For example, if the field of DC support LTE-NR in predetermined support band combinations are present, the terminal device 2 to support DC between LTE and NR at its predetermined support band combinations. In other words, if the field of DC support LTE-NR in predetermined support band combination does not exist, the terminal device 2 does not support DC at its predetermined support band combinations. This DC support LTE-NR, the base station apparatus 1 is able to recognize whether it is possible to the terminal device 2 DC between LTE and NR, can be efficiently operate the wireless system. Incidentally, DC supports LTE-NR may include parameters (supportSCG) indicating whether NR is reached or NR supports operate as MCG or SCG only support operation as SCG. Also, DC supports LTE-NR is synchronous DC only (supportSyncDC), asynchronous DC only (supportAsyncDC), or may comprise a parameter indicating whether to support both synchronous DC and asynchronous DC (supportbothSyncDCandAsyncDC).
[0223]
　NR, but has been implemented taking to the terminal device 2 is a stand-alone that is not supported of NR, DC between the LTE and the NR is essential function. Therefore, for a given band NR is supported, the terminal device 2, either standalone or DC is at least supported. In other words, the NR of terminal capability, the terminal device 2 is shown to be at least support either standalone or DC. In other words, the terminal apparatus 2 standalone NR in a given retaining band is not supported, DC of NR is supported in retaining band combination comprising the predetermined support band. In this case, the terminal device 2 may not transmit the parameters of the DC support LTE-NR. Or, in this case, the terminal device 2 transmits Always set to indicate the support to the parameters of DC support LTE-NR. The terminal device 2 for supporting standalone NR is, DC between LTE and NR may not be supported. Incidentally, for a given band NR is supported, it may be both standalone and DC support. In the case where NR CA is supported for a given band is supported, may not be supported both standalone and DC.
[0224]
　That is, in LTE, the band notified by the support band combination, can also be band initial connection. In LTE, the terminal device capability indicating whether or not to support stand-alone is not necessary. Meanwhile, in NR, the band notified by the support band combination, not necessarily be the initial connection which can also be a band, which can be initial connection band is notified by the terminal device capability. In NR, notified by retaining band, and the band was not notified by the support band combination, the initial connection is available band regardless of the information of the standalone support NR.
[0225]
　As an example of transferring a parameter that indicates that support dual connectivity LTE and NR (transmission), the terminal device 2 performing the initial connection LTE has a function that can be further connected to NR, LTE from the base station apparatus 1 If requested the transmission of the terminal device capability may send including DC support LTE-NR support band combination (supportedBandCombination) to the base station apparatus 1. Its support band combinations are included in addition LTE terminal device capability (UE-EUTRA-Capability). Incidentally, the support band combination, may be sent, including the parameter (interRAT-Parameters) for different RAT.
[0226]
　As an example of transfer (transmit) a parameter indicating that it supports NR standalone terminal device 2 performing the initial connection LTE has a function that can be further connected to NR, LTE terminal apparatus from the base station apparatus 1 If the transmission capabilities are requested, it can be sent, including stand-alone support NR support band (supportedBand) to the base station apparatus 1. Its support band is included further in the LTE terminal device capability (UE-EUTRA-Capability). Incidentally, the support band combination, may be sent, including the parameter (interRAT-Parameters) for different RAT.
[0227]
　As an example of transferring a NR of the terminal device capability (transmission), the terminal device 2 performing the initial connection LTE has a function that can be further connected to NR, requests transmission of the LTE terminal capabilities from the base station apparatus 1 If it is, the NR of the terminal device capability to the base station apparatus 1 (UE-FEUTRA-capability), can be sent, including the LTE terminal device capability (UE-EUTRA-capability).
[0228]
　As an example of transferring a terminal capability of the NR (transmission), the terminal device 2 performing the initial connection LTE has a function that can be further connected to NR, transmission from the base station apparatus 1 of the terminal device capability of NR the if requested, it is possible to transfer terminal device capability of NR to the base station apparatus 1. In this case, the terminal device capability of NR is sent including the parameter (interRAT-Parameters) for different RAT.
[0229]
　As an example of transferring (transmitting) the terminal capabilities of the NR, the terminal device 2 performing the initial connection to the NR cell, NR terminal device capability to the base station apparatus 1 (UE-FEUTRA-Capability) terminal transfers included in the device capability information. In this case, the the NR of the terminal device capability (UE-FEUTRA-Capability), the terminal device categories NR (UE-category-NR), a list of supported bands combination of support bands and NR and NR a NR (supportedBandCombinationFEUTRAandFEUTRA), parameter indicating whether to support the ability to communicate in a stand-alone (standalone support NR, standalone-support-NR), a parameter that indicates whether or not to support the DC between NR and NR (DC supported NR-NR, dc-support-NR-NR), include parameters indicating a set of physical parameters supported. Incidentally, the terminal device capability of NR, parameter indicating whether or not to support CA (CA support NR-NR, ca-Support-NR-NR) may be included. Here, a function of the terminal device 2 can be further connected to the LTE, when requested to transmit the LTE terminal device capability from the base station apparatus 1, and transfers the LTE terminal device capability to the base station apparatus 1 be able to. Its LTE terminal device capability is sent including the parameter (interRAT-Parameters) for different RAT. Incidentally, the LTE terminal device capability, a list of supported bands combination of LTE and NR (supportedBandCombinationEUTRAandFEUTRA), a parameter that indicates whether or not to support the DC (DC support LTE-NR, dc-Support-LTE-NR) contains it may be sent.
[0230]
　As an example of transferring a parameter that indicates that support dual connectivity LTE and NR (transmission), the terminal device 2 performing the initial connection LTE has a function that can be further connected to NR, was operational at NR when detecting that the serving cell may transfer the terminal capability of the NR to the base station apparatus 1. And when detecting a serving cell operating at the NR, the synchronization signal NR (e.g., NR-PSS or NR-SSS) or NR reference signal (e.g., NR-CRS, NR-PRS, or NR-TRS such as If) has been detected, NR downlink physical channel (e.g. information indicating that it is operating in NR, NR-PBCH, when receiving the like) NR-PDSCH, and the like.
[0231]
　Of course the example described above is merely an example, be transferred (transmitted) to the various parameters in the base station apparatus 1 in association with the terminal device capability is possible, the method is not particularly limited.
[0232]
　<< 2. Applications >>
　according to the disclosed technique is applicable to various products. For example, the base station apparatus 1 may be implemented as a macro eNB or any type of eNB, such as small eNB (evolved Node B). Small eNB may pico eNB, such as micro eNB or Home (femto) eNB, or a eNB to cover smaller cells than macrocells. Alternatively, the base station apparatus 1 may be implemented as a base station for other types, such as NodeB or BTS (Base Transceiver Station). The base station apparatus 1 includes a main body (also referred to as a base station device) that controls the wireless communication, one or more RRH placed in a different location from the main body (Remote Radio Head) and may contain. Further, by different types of terminal to be described later to perform a temporary or semi-permanent base station function, it may operate as the base station apparatus 1. Moreover, at least some of the components of the base station apparatus 1 may be implemented in the module for a base station apparatus or base station apparatus.
[0233]
　In addition, for example, the terminal device 2, a smart phone, a tablet PC (Personal Computer), notebook PC, a portable game terminal, portable / dongle type mobile router or mobile terminal, such as a digital camera or a vehicle-mounted terminal such as a car navigation device, it may be implemented as. The terminal device 2 may be implemented as M2M (Machine To Machine) (also called MTC (Machine Type Communication) terminal) terminal that performs communications. Moreover, at least some of the components of the terminal device 2, the module to be mounted on these terminals (e.g., configured as integrated circuit modules in a single die) may be implemented in.
[0234]
　　<2.1. Applications for the base station Example>
　(first applied example)
　FIG. 19 is a block diagram showing a first example of a schematic configuration of an eNB of the technology according to the present disclosure may be applied. eNB800 has one or more antennas 810, and the base station apparatus 820. Each antenna 810 and base station apparatus 820 may be connected to each other via a RF cable.
[0235]
　Each antenna 810, a single or multiple antenna elements (e.g., a plurality of antenna elements of MIMO antennas) have, is used to send and receive radio signals by the base station apparatus 820. eNB800 has a plurality of antennas 810 as shown in FIG. 19, a plurality of antennas 810, for example, may correspond to a plurality of frequency bands eNB800 uses. Although in FIG. 19 shows an example in which ENB800 has a plurality of antennas 810, ENB800 may have a single antenna 810.
[0236]
　The base station apparatus 820 includes a controller 821, a memory 822, a network interface 823 and a wireless communication interface 825.
[0237]
　The controller 821 may be, for example, a CPU DSP, or to operate the various functions of the upper layer of the base station apparatus 820. For example, the controller 821 generates a data packet from the data in the signal processed by the wireless communication interface 825, and transfers the generated packet via the network interface 823. The controller 821, the data from the plurality of baseband processor generates the bundled packets by bundling the generated bundled packets may be transferred. The controller 821, radio resource management (Radio Resource Control), radio bearer control (Radio Bearer Control), mobility management (Mobility Management), executes the control such as the inflow control (Admission Control) or scheduling (Scheduling) Logical it may have a function. Further, the control may be performed in conjunction with the periphery of the eNB or the core network node. Memory 822 includes RAM and ROM, and stores a program executed, and various control data (e.g., terminal list, such as the transmission power data and scheduling data) by the controller 821.
[0238]
　Network interface 823 is a communication interface for connecting the base station apparatus 820 to the core network 824. Controller 821 via the network interface 823 may communicate with the core network node, or other eNB. In that case, the ENB800, the core network node, or other eNB, may be connected to one another by logical interfaces (e.g., S1 interface or X2 interface). Network interface 823 may be a wired communication interface, or a wireless communication interface for wireless backhaul. If the network interface 823 is a wireless communication interface, a network interface 823 may use a higher frequency band than the frequency band used for radio communication by the wireless communication interface 825.
[0239]
　Wireless communication interface 825, LTE supports either a cellular communication system such as (Long Term Evolution) or LTE-Advanced, via the antenna 810 to provide wireless connectivity to the terminal located in the cell of ENB800. Wireless communication interface 825 typically may include such baseband (BB) processor 826 and RF circuit 827. BB processor 826, for example, the encoding / decoding may be performed such as modulation / demodulation and multiplexing / demultiplexing, each layer (e.g., L1, MAC (Medium Access Control), RLC (Radio Link Control) and PDCP (Packet Data Convergence Protocol)) to perform various signal processing. BB processor 826, instead of the controller 821 may include some or all of the logical functions described above. BB processor 826, a memory for storing a communication control program may be a module including a processor and associated circuitry to execute the program, the function of BB processor 826 may be changeable by the update of the program good. Further, the module may be a card or a blade is inserted into the slot of the base station apparatus 820, or may be a chip mounted on said card or the blade. On the other hand, RF circuit 827, a mixer may include such as filters and amplifiers, for transmitting and receiving radio signals via an antenna 810.
[0240]
　Wireless communication interface 825 includes a plurality of BB processor 826 as shown in FIG. 19, a plurality of BB processor 826 may, for example, correspond to a plurality of frequency bands eNB800 uses. The wireless communication interface 825 includes a plurality of RF circuits 827 as shown in FIG. 19, a plurality of RF circuits 827 may correspond for example to a plurality of antenna elements. Although the wireless communication interface 825 in FIG. 19 shows an example including a plurality of BB processor 826 and a plurality of RF circuits 827, a wireless communication interface 825 includes a single BB processor 826 or a single RF circuit 827 But good.
[0241]
　In eNB800 shown in FIG. 19, one or more components of the higher layer processing unit 101 and the control unit 103 described with reference to FIG. 8, may be implemented in a wireless communication interface 825. Alternatively, at least some of these components may be implemented in the controller 821. As an example, ENB800 is part of a wireless communication interface 825 (e.g., BB processor 826) or the whole, and mounted / or module including a controller 821, even if the one or more components in the modules are mounted good. In this case, the module stores (in other words, a program for executing the operation of the one or more components to the processor) processor program for functioning as the one or more components, and the program may be an execution. As another example, a program for causing a processor as the one or more components are installed in ENB800, wireless communication interface 825 (e.g., BB processor 826) also and / or controller 821 executes the program good. As described above, ENB800 as a device comprising the one or more components may be the base station device 820 or the module is provided, a program for causing a processor as the one or more components are provided it may be. The readable recording medium recording the program may be provided.
[0242]
　Further, in eNB800 shown in FIG. 19, the reception unit 105 and transmission unit 107 has been described with reference to FIG. 8, the radio communication interface 825 (e.g., RF circuitry 827) may be implemented in. The transmitting and receiving antenna 109 may be implemented in the antenna 810. The network communication unit 130 may be implemented in the controller 821 and / or network interface 823.
[0243]
　(Second applied example)
　FIG. 20 is a block diagram showing a second exemplary configuration of an eNB of the technology according to the present disclosure may be applied. eNB830 has one or more antennas 840, the base station apparatus 850, and RRH860. Each antenna 840 and RRH860 may be connected to each other via a RF cable. The base station apparatus 850 and RRH860 may be connected to one another by high-speed line such as an optical fiber cable.
[0244]
　Each antenna 840, a single or multiple antenna elements (e.g., a plurality of antenna elements of MIMO antennas) have, is used to send and receive radio signals by RRH860. eNB830 has a plurality of antennas 840 as shown in FIG. 20, a plurality of antennas 840, for example, may correspond to a plurality of frequency bands eNB830 uses. Although in FIG. 20 shows an example in which ENB830 has a plurality of antennas 840, ENB830 may have a single antenna 840.
[0245]
　The base station apparatus 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855 and connection interface 857. Controller 851, a memory 852 and a network interface 853 is similar to the controller 821, a memory 822 and a network interface 823 described with reference to FIG. 19.
[0246]
　Wireless communication interface 855 supports any of the cellular communication system such as LTE or LTE-Advanced, via the RRH860 and antenna 840 to provide wireless connectivity to terminals located in a sector corresponding to RRH860. Wireless communication interface 855 typically may include such BB processor 856. BB processor 856, except that it is connected to the RF circuitry 864 of RRH860 through the connection interface 857 is similar to the BB processor 826 described with reference to FIG. 19. Wireless communication interface 855 includes a plurality of BB processor 856 as shown in FIG. 19, a plurality of BB processor 856 may, for example, correspond to a plurality of frequency bands eNB830 uses. Although the wireless communication interface 855 in FIG. 20 shows an example including a plurality of BB processor 856, a wireless communication interface 855 may comprise a single BB processor 856.
[0247]
　Connection interface 857 is an interface for base station apparatus 850 (the radio communication interface 855) connected to the RRH860. Connection interface 857 may be a communication module for communicating with the high-speed line which connects the base station apparatus 850 (wireless communication interface 855) and RRH860.
[0248]
　Further, RRH860 comprises a connection interface 861 and a wireless communication interface 863.
[0249]
　Connection interface 861 is an interface for connecting to the base station apparatus 850 RRH860 (wireless communication interface 863). Connection interface 861 may be a communication module for communicating with the high-speed line.
[0250]
　Wireless communication interface 863 sends and receives radio signals via an antenna 840. Wireless communication interface 863 may typically include an RF circuit 864. RF circuit 864, a mixer may include such as filters and amplifiers, for transmitting and receiving radio signals via an antenna 840. Wireless communication interface 863 includes a plurality of RF circuits 864 as shown in FIG. 20, a plurality of RF circuits 864 may correspond for example to a plurality of antenna elements. Although the wireless communication interface 863 in FIG. 20 shows an example including a plurality of RF circuits 864, a wireless communication interface 863 may comprise a single RF circuit 864.
[0251]
　In eNB830 shown in FIG. 20, one or more components of the higher layer processing unit 101 and the control unit 103 described with reference to FIG. 8, are implemented in the wireless communication interface 855 and / or wireless communication interface 863 it may be. Alternatively, at least some of these components may be implemented in the controller 851. As an example, ENB830 is part of a wireless communication interface 855 (e.g., BB processor 856) or the whole, and mounted / or module including a controller 851, even if the one or more components in the modules are mounted good. In this case, the module stores (in other words, a program for executing the operation of the one or more components to the processor) processor program for functioning as the one or more components, and the program may be an execution. As another example, a program for causing a processor as the one or more components are installed in ENB830, wireless communication interface 855 (e.g., BB processor 856) also and / or controller 851 executes the program good. As described above, ENB830 as a device comprising the one or more components may be the base station device 850 or the module is provided, a program for causing a processor as the one or more components are provided it may be. The readable recording medium recording the program may be provided.
[0252]
　Further, in eNB830 shown in FIG. 20, for example, the receiving unit 105 and the transmitting unit 107 has been described with reference to FIG. 8, the radio communication interface 863 (e.g., RF circuitry 864) may be implemented in. The transmitting and receiving antenna 109 may be implemented in the antenna 840. The network communication unit 130 may be implemented in the controller 851 and / or network interface 853.
[0253]
　　<2.2. Applications> about the terminal apparatus
　(first applied example)
　FIG. 21 is a block diagram showing an example of a schematic configuration of the smartphone 900 technology according to the present disclosure may be applied. Smartphone 900, processor 901, memory 902, storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, display device 910, a speaker 911, a wireless communication interface 912,1 one or more of the antenna switch 915 comprises one or more antennas 916, bus 917, battery 918 and the auxiliary controller 919.
[0254]
　The processor 901 may be, for example, a CPU or SoC (System on Chip), which controls the functions of the application layer and other layers of the smartphone 900. Memory 902 includes RAM and ROM, for storing programs and data executed by the processor 901. Storage 903 may include a storage medium such as a semiconductor memory or a hard disk. External connection interface 904 is an interface for connecting an external device such as a memory card or USB (Universal Serial Bus) device to a smart phone 900.
[0255]
　The camera 906 is, for example, an image pickup element such as CCD (Charge Coupled Device) or CMOS (Complementary Metal Oxide Semiconductor), and generates a captured image. Sensor 907 may include, for example, the positioning sensor, a gyro sensor, the sensor group, such as a geomagnetic sensor and an acceleration sensor. The microphone 908 converts a voice inputted to the smartphone 900 to the audio signal. Input device 909, for example, a touch sensor, a keypad for detecting a touch to the screen of the display device 910, a keyboard includes a button or switch, and accepts an operation or information input from a user. Display device 910 has a screen such as a liquid crystal display (LCD) or organic light emitting diode (OLED) display, and displays the output image of the smartphone 900. Speaker 911 converts the audio signal output from the smart phone 900 to the audio.
[0256]
　Wireless communication interface 912 supports any of the cellular communication system such as LTE or LTE-Advanced, which executes wireless communication. Wireless communication interface 912 typically may include such BB processor 913 and RF circuit 914. BB processor 913, for example, the encoding / decoding may be performed such as modulation / demodulation and multiplexing / demultiplexing, execute various signal processing for wireless communication. On the other hand, RF circuit 914, a mixer may include such as filters and amplifiers, for transmitting and receiving radio signals via an antenna 916. Wireless communication interface 912 may be a one-chip module that integrates BB processor 913 and RF circuit 914. Wireless communication interface 912 may include a plurality of BB processor 913 and a plurality of RF circuits 914 as shown in FIG. 21. Although the wireless communication interface 912 in FIG. 21 shows an example including a plurality of BB processor 913 and a plurality of RF circuits 914, a wireless communication interface 912 includes a single BB processor 913 or a single RF circuit 914 But good.
[0257]
　Further, the wireless communication interface 912, in addition to cellular communication systems, short-range wireless communication system, other types of wireless communication systems, such as the proximity wireless communication system or wireless LAN (Local Area Network) system may support, in this case, it may include a BB processor 913 and RF circuit 914 for each wireless communication system.
[0258]
　Each of the antenna switch 915, a plurality of circuits included in the wireless communication interface 912 (e.g., different circuits for wireless communication system) switches the connection destination of the antenna 916 between.
[0259]
　Each antenna 916, a single or multiple antenna elements (e.g., a plurality of antenna elements of MIMO antennas) have, is used to send and receive radio signals by the wireless communication interface 912. Smartphone 900 may have a plurality of antennas 916 as shown in FIG. 21. Although in FIG. 21 shows an example where the smartphone 900 has a plurality of antennas 916, the smartphone 900 may have a single antenna 916.
[0260]
　Moreover, the smartphone 900 may comprise an antenna 916 for each wireless communication system. In that case, the antenna switch 915 may be omitted from the configuration of the smartphone 900.
[0261]
　Bus 917, a processor 901, memory 902, storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, display device 910, a speaker 911, connects the wireless communication interface 912 and the auxiliary controller 919 to each other . Battery 918 via a power supply line partially indicated by broken lines in the figure, supplies power to each block of the smartphone 900 shown in FIG. 21. Auxiliary Controller 919, for example, in the sleep mode, to operate the required minimum functionality of the smartphone 900.
[0262]
　In the smartphone 900 shown in FIG. 21, one or more components of the higher layer processing unit 201 and the control unit 203 described with reference to FIG. 9 described with reference to FIG. 9, implemented in a wireless communication interface 912 it may be. Alternatively, at least some of these components may be implemented in the processor 901 or the auxiliary controller 919. As an example, a smart phone 900, a portion of the wireless communication interface 912 (e.g., BB processor 913) or the whole, equipped with a module containing the processor 901, and / or the auxiliary controller 919, the one or more components in the module There may be implemented. In this case, the module stores (in other words, a program for executing the operation of the one or more components to the processor) processor program for functioning as the one or more components, and the program may be an execution. As another example, a program for causing a processor as the one or more components are installed on the smartphone 900, a wireless communication interface 912 (e.g., BB processor 913), a processor 901, and / or auxiliary controller 919 is the program may be an execution. As described above, may be provided smart phone 900 or the module is a device provided with the one or more components, the program may be provided for causing a processor as the one or more components. The readable recording medium recording the program may be provided.
[0263]
　Further, in a smart phone 900 shown in FIG. 21, for example, the reception unit 205 and transmission unit 207 has been described with reference to FIG. 9, the wireless communication interface 912 (e.g., RF circuitry 914) may be implemented in. The transmitting and receiving antenna 209 may be implemented in the antenna 916.
[0264]
　(Second applied example)
　FIG. 22 is a block diagram showing an example of a schematic configuration of the car navigation device 920 technology according to the present disclosure may be applied. Car navigation device 920, processor 921, memory 922, GPS (Global Positioning System) module 924, sensor 925, data interface 926, content player 927, a storage medium interface 928, an input device 929, display device 930, a speaker 931, a wireless communication an interface 933,1 one or more of the antenna switch 936,1 or more antennas 937 and battery 938.
[0265]
　The processor 921 may be, for example, a CPU or SoC, controls the navigation functions and other functions of the car navigation device 920. Memory 922 includes RAM and ROM, for storing programs and data executed by the processor 921.
[0266]
　GPS module 924 uses the GPS signal received from the GPS satellites, measures the position of the car navigation device 920 (e.g., latitude, longitude and altitude). Sensor 925 is, for example, a gyro sensor may include sensors such as a geomagnetic sensor, and pressure sensor. Data interface 926 is connected to, for example, vehicle network 941 through a terminal (not shown), we obtain the data generated by the vehicle, such as vehicle speed data.
[0267]
　Content player 927, storage medium to be inserted into the storage medium interface 928 (e.g., CD or DVD) to reproduce the content stored in the. Input device 929 may, for example, a touch sensor for detecting a touch on the screen of the display device 930 includes a button or switch, and accepts an operation or information input from a user. Display device 930 has a screen such as an LCD or OLED display, and displays an image of content navigation function or reproducing. Speaker 931 outputs sound of content navigation function or reproducing.
[0268]
　Wireless communication interface 933 supports any of the cellular communication system such as LTE or LTE-Advanced, which executes wireless communication. Wireless communication interface 933 typically may include such BB processor 934 and RF circuit 935. BB processor 934, for example, the encoding / decoding may be performed such as modulation / demodulation and multiplexing / demultiplexing, execute various signal processing for wireless communication. On the other hand, RF circuit 935, a mixer may include such as filters and amplifiers, for transmitting and receiving radio signals via an antenna 937. Wireless communication interface 933 may be a one-chip module that integrates BB processor 934 and RF circuit 935. Wireless communication interface 933 may include a plurality of BB processor 934 and a plurality of RF circuits 935 as shown in FIG. 22. Although the wireless communication interface 933 in FIG. 22 shows an example including a plurality of BB processor 934 and a plurality of RF circuits 935, a wireless communication interface 933 includes a single BB processor 934 or a single RF circuit 935 But good.
[0269]
　Further, the wireless communication interface 933, in addition to cellular communication systems, short-range wireless communication system may support other types of wireless communication systems, such as the proximity wireless communication system or wireless LAN system, in that case, the radio it may include a BB processor 934 and RF circuit 935 for each communication mode.
[0270]
　Each of the antenna switch 936, a plurality of circuits included in the wireless communication interface 933 (e.g., different circuits for wireless communication system) switches the connection destination of the antenna 937 between.
[0271]
　Each antenna 937, a single or multiple antenna elements (e.g., a plurality of antenna elements of MIMO antennas) have, is used to send and receive radio signals by the wireless communication interface 933. Car navigation device 920 may have a plurality of antennas 937 as shown in FIG. 22. Although the car navigation system 920 in FIG. 22 shows an example having a plurality of antennas 937, car navigation device 920 may have a single antenna 937.
[0272]
　Furthermore, car navigation device 920 may comprise an antenna 937 for each wireless communication system. In that case, the antenna switch 936 may be omitted from the configuration of the car navigation device 920.
[0273]
　Battery 938, via a feed line partially indicated by broken lines in the figure, supplies power to each block of the car navigation device 920 shown in FIG. 22. Further, the battery 938 accumulates electric power fed from the vehicle side.
[0274]
　In car navigation device 920 shown in FIG. 22, one or more components of the higher layer processing unit 201 and the control unit 203 described with reference to FIG. 9 described with reference to FIG. 9, the wireless communication interface 933 it may be implemented in. Alternatively, at least some of these components may be implemented in the processor 921. As an example, a car navigation device 920, a portion of the wireless communication interface 933 (e.g., BB processor 934) equipped with a module that contains the or all and / or processor 921, the one or more components are mounted in the module it may be. In this case, the module stores (in other words, a program for executing the operation of the one or more components to the processor) processor program for functioning as the one or more components, and the program may be an execution. As another example, a program for causing a processor as the one or more components are installed on the car navigation device 920, a wireless communication interface 933 (e.g., BB processor 934) and / or processor 921 executing the program it may be. As described above, it may be a car navigation device 920 or the module is provided as an apparatus provided with the one or more components, be provided a program for causing a processor as the one or more components good. The readable recording medium recording the program may be provided.
[0275]
　Further, the car navigation apparatus 920 shown in FIG. 22, for example, the reception unit 205 and transmission unit 207 has been described with reference to FIG. 9, the wireless communication interface 933 (e.g., RF circuitry 935) may be implemented in. The transmitting and receiving antenna 209 may be implemented in the antenna 937.
[0276]
　Further, the technology according to the present disclosure includes one or more blocks of the car navigation device 920 described above, the vehicle network 941 may be implemented as an in-vehicle system (or vehicle) 940 that includes a vehicle-side module 942. That is, the upper layer processing unit 201, the control unit 203, receiving unit 205, and a vehicle system as a device comprising at least one (or vehicle) 940 may be provided within the transmission unit 207. Vehicle module 942, the vehicle speed, generates a vehicle data such as engine speed or failure information, and outputs the generated data to the vehicle network 941.
[0277]
　<< 3. Conclusion >>
　As described above, in the wireless communication system according to this embodiment, the terminal device transmits control information related to the communication mode supporting (i.e., terminal device capability) to the base station apparatus. At this time the terminal device, when supporting DC based on the NR and LTE, parameter indicating whether or not to support the DC (e.g., supportSyncDC, supportAsyncDC, and supportbothSyncDCandAsyncDC etc.) associate. With this configuration, the base station apparatus, based on the terminal capability reported from the terminal device, the terminal device recognizes whether or not to support DC, between the terminal device in response to the recognition result it is possible to control the communication. Therefore, according to the wireless communication system according to the present embodiment, regardless of the differences in the design according to the use case, it is possible to provide a more suitable radio access technology.
[0278]
　Having described in detail preferred embodiments of the present disclosure with reference to the accompanying drawings, the technical scope of the present disclosure is not limited to such an example. It would be appreciated by those skilled in the art of the present disclosure, within the scope of the technical idea described in the claims, it is intended to cover various modifications, combinations, these for it is also understood to belong to the technical scope of the present disclosure.
[0279]
　The effects described herein are not limiting be those that only illustrative or exemplary. In other words, the technology according to the present disclosure, together with the above effects, or instead of the above effects, can exhibit the apparent other effects to those skilled in the art from the description herein.

claims
[Requested item 1]
　A communication unit that performs wireless communication,
　the control information about the communication method supported, and a control unit for controlling so as to be transmitted to the external device via the wireless communication
　with a,
　wherein, the first communication method If, when supporting a different second communication method with the first communication method, indicating whether or not to support dual connectivity based on said first communication method and the second communication method parameters the associating the control information,
　the terminal device.
[Requested item 2]
　Wherein,
　when supporting dual connectivity, by defining the fields for setting the parameters for the control information, associating the parameters for the control information,
　it does not support dual connectivity If it does not specify the fields for the control information,
　the terminal device according to claim 1.
[Requested item 3]
　The parameter, if the function of controlling independently of the communication the communication based on the first communication system based on the second communication method is not supported, the first communication method and the second communication method It indicates that support dual connectivity based on bets, terminal device according to claim 1.
[Requested item 4]
　The control information, if the function of controlling independently of the communication based communication based on the first communication method to the second communication method is not supported, including fields for setting the parameters, wherein terminal device according to claim 1.
[Requested item 5]
　The parameter, when said first function of controlling independently of the communication based on the communication method with the communication based on the second communication method is supported, the second communication with the first communication method indicating that the dual connectivity based on the method is not supported, the terminal device according to claim 3.
[Requested item 6]
　Wherein the control unit, a parameter indicating whether to support a function of controlling independently of the communication based communication based on the first communication method to the second communication method, associated with the control information, wherein terminal device according to claim 3.
[Requested item 7]
　When the function of controlling independently of the communication the communication based on the first communication system based on the second communication method is not supported,
　a group of the serving cell based on the second communication method, the role of mobility anchor is set to the group of serving cell associated with the base station apparatus performs a
　group of serving cell based on the first communication method is set to the group of serving cell associated with different other base station apparatus and the base station apparatus ,
　terminal device according to claim 3.
[Requested item 8]
　The control unit associates a parameter indicating whether to support dual connectivity with a plurality of external devices mutually different communicating based on the first communication scheme to the control information, the terminal device according to claim 1 .
[Requested item 9]
　The control unit may
　signal based on the first communication method is the controlled so as to be received through the wireless communication,
　about the resources utilized in the communication based on the first communication method between the external device association information to the control information, the control information controls to be transmitted to the external device via the wireless communication,
　the terminal device according to claim 1.
[Requested item 10]
　Information on the resources, the includes information indicating a subcarrier interval of the signal based on the first communication method, and information indicating the symbol length of the signal based on the first communication system terminal of claim 9 apparatus.
[Requested item 11]
　Wherein the first communication method is a controllable communication system subcarrier spacing and symbol length, the terminal device according to claim 1.
[Requested item 12]
　The control unit associates the information indicating a combination of a frequency band which can be used in the dual connectivity to the control information, the terminal device according to claim 1.
[Requested item 13]
　Wherein, based on a request from the external device, the control information is controlled to be transmitted to the external apparatus, the terminal apparatus according to claim 1.
[Requested item 14]
　Wherein, when establishing a communication based on the first communication method, wherein the control information is controlled to be transmitted to the external apparatus, the terminal apparatus according to claim 1.
[Requested item 15]
　A communication unit that performs wireless communication,
　the control information regarding the communication system to which the terminal support, and a control unit for controlling so as to be acquired from the terminal apparatus via the wireless communication
　with a,
　the control information, the terminal device, the first communication system, when supporting a different second communication method with the first communication system, the terminal device, the first communication method and the second communication method It includes parameters indicating whether to support dual connectivity based on bets,
　the base station apparatus.
[Requested item 16]
　And performs wireless communication,
　the processor, the control information about the communication method supported by, and controlling so as to be transmitted to the external device via the wireless communication,
　the first communication method, the first communication when supporting a second communication method different from the method to associate a parameter indicating whether or not to support dual connectivity based on said first communication method and the second communication scheme to the control information and,
　including, communication method.
[Requested item 17]
　And performs wireless communication,
　the processor, the control information about the communication system to which the terminal support, and be controlled to be acquired from the terminal apparatus via the wireless communication
　include,
　the control information, the terminal device, the first communication method, wherein when supporting a different second communication method with the first communication system, the terminal device, the second communication with the first communication method It includes parameters indicating whether to support dual connectivity based on a method,
　a communication method.
[Requested item 18]
　The computer,
　and performs wireless communication,
　the control information regarding the communication method supported by, and controlling so as to be transmitted to the external device via the wireless communication,
　the first communication method, the first communication when supporting a second communication method different from the method to associate a parameter indicating whether or not to support dual connectivity based on said first communication method and the second communication scheme to the control information and,
　to the execution, program.
[Requested item 19]
　The computer,
　and performs wireless communication,
　the control information regarding the communication system to which the terminal support, and that the controls to be acquired from the terminal device via the wireless communication,
　is executed,
　the control information the terminal device, the first communication system, when supporting a different second communication method with the first communication system, the terminal device, the first communication method and the second It includes parameters indicating whether to support dual connectivity based on a communication method,
　a program.