[0001]The present disclosure, the terminal apparatus, a base station apparatus and method.
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.
[0004]
　Further, transmitted and received between the terminal apparatus and the base station apparatus for radio resource management, the details of the reference signal for the measurement, is disclosed in Non-Patent Document 2.
CITATION
Non-patent literature
[0005]
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　V0.3.0　(2016-03).
非特許文献2 : 3rd　Generation　Partnership　Project;　Technical　Specification　Group　Radio　Access　Network;　Evolved　Universal　Terrestrial　Radio　Access　(E-UTRA)　and　Evolved　Universal　Terrestrial　Radio　Access　Network　(E-UTRAN);　Overall　description;　Stage　2　(Release　14),　3GPP　TR　36.300　V14.0.0　(2016-09).
Summary of the Invention
Problems that the Invention is to Solve
[0006]
　In recent years, measures for radio resource management, it is believed that if it is desired to take place on the basis of the uplink reference signal. Therefore, in the radio access technology, in order to manage the more efficient radio resource, both measurements of uplink reference signals for measurement and radio resource management of the downlink reference signal for the radio resource management support it is preferred that the. From the viewpoint of communication overhead, etc. radio resources used in the measurement for the management of their radio resources is preferably controlled appropriately according to the communication situation.
[0007]
　Therefore, in this disclosure, by appropriately utilizing the measurement of the uplink reference signal for radio resource management, it provides a mechanism that can improve the transmission efficiency of the whole system.
Means for Solving the Problems
[0008]
　According to the present disclosure, transmission unit for transmitting a measurement unit for performing downlink measurements based on the downlink reference signal, the first uplink reference signal based on the first set for the measurement for the management of radio resources when, wherein the transmission unit, when the first condition is satisfied, transmits the first uplink reference signal, the measurement unit, when the second condition is satisfied, the downlink measurement performed, the terminal device is provided.
[0009]
　Further, according to the present disclosure, the transmission unit and the first uplink reference signal based on the first case satisfies the first set for the measurement for the management of radio resources for transmitting the downlink reference signal It sends, sent by the terminal device that performs downlink measurement on the basis of the downlink reference signal when a second condition is satisfied, the first uplink measurement on the basis of the first uplink reference signal the base station apparatus is provided with a measurement unit for performing.
[0010]
　Further, according to the present disclosure, when the second condition is satisfied, and performing the downlink measurements based on the downlink reference signal, if the first condition is satisfied, for the measurement for the management of radio resources method performed by a processor comprising transmitting a first uplink reference signal based on the first set, it is provided.
[0011]
　Further, according to the present disclosure, and transmitting the downlink reference signal, a first first uplink reference signal based on the setting for the measurement for the management of radio resources if the first condition is satisfied transmitted, sent by the terminal device that performs downlink measurement on the basis of the downlink reference signal when a second condition is satisfied, performs the first uplink measurement on the basis of the first uplink reference signal method executed it and, by a processor comprising is provided.
Effect of the invention
[0012]
　According to the present disclosure described above, by appropriately utilizing the measurement of the uplink reference signal for radio resource management, a mechanism that can improve the transmission efficiency of the overall system is provided. 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
[0013]
Is a diagram showing an example of a setting of a component carrier in FIG. 1 embodiment.
Is a diagram showing an example of a setting of a component carrier in FIG. 2 embodiment.
3 is a diagram showing an example of an LTE downlink subframe in the present embodiment.
Is a diagram illustrating an example of an LTE uplink sub-frame in FIG. 4 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 the NR in this embodiment.
7 is a diagram showing an example of an uplink subframe of the NR in this embodiment.
8 is a schematic block diagram showing a configuration of a base station apparatus of the present embodiment.
9 is a schematic block diagram showing a configuration of a terminal device of the present embodiment.
It is a diagram illustrating an example of an LTE downlink resource element mapping in FIG. 10 embodiment.
11 is a diagram showing an example of a downlink resource elements mapping NR in this embodiment.
It is a diagram illustrating an example of a downlink resource elements mapping NR in FIG. 12 embodiment.
13 is a diagram showing an example of a downlink resource elements mapping NR in this embodiment.
14 is a diagram showing an example of a frame structure of a self-contained transmission in the present embodiment.
Is a diagram showing an overall configuration of a communication system according to FIG. 15 embodiment.
Is a diagram illustrating an example of switching of FIG. 16 according to the present embodiment downlink RRM measurements and uplink RRM measurements.
17 is a diagram showing an example of RRM measurement uplink switching the RS transmits the CSI measuring uplink RS transmit according to the present embodiment.
18 is a diagram showing an example of the switching of the RRM measurement uplink RS transmit and CSI measurement uplink RS transmit according to the present embodiment.
19 is a diagram showing an example of a procedure of a flow related RRM measurements performed at the base station apparatus and a terminal apparatus according to the present embodiment.
Diagrams [20] shows an example of a procedure of a flow related RRM measurements performed at the base station apparatus and a terminal apparatus according to the present embodiment.
21 is a diagram showing an example of the flow of the procedure relating RRM measurements performed at the base station apparatus and a terminal apparatus according to the present embodiment.
It is a block diagram showing a first exemplary configuration of FIG. 22] eNB.
It is a block diagram showing a second exemplary configuration of FIG. 23] eNB.
Is a block diagram illustrating an example of FIG. 24 schematic configuration of a smart phone.
Is a block diagram showing an example of a schematic configuration of a [25] a car navigation system.
DESCRIPTION OF THE INVENTION
[0014]
　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.
[0015]
　Further, in this specification and the drawings, elements having substantially the same functional configuration may be distinguished by affixing a different alphabetical letter to the same reference numerals. For example, substantially a plurality of elements having the same function and structure, the base station apparatus 1A as required, distinguished as 1B and 1C. However, when there is no particular need to distinguish between a plurality of elements having the same function and structure are denoted with the same reference numeral only. For example, if the base station device 1A, particularly necessary to distinguish between 1B and 1C not, simply referred to as a base station device 1.
[0016]
　The description will be made in the following order.
　　1. Introduction
　　2. Technical features
　　　2.1. Overall structure
　　　2.2. Measurements
　　3. Application Example
　　4. Summary
[0017]
　<< 1. First >>
　first described technique relating to an embodiment of the present disclosure.
[0018]
　　
　In the present 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, capable of supporting communication using a set of one or more cells. Communication by a set or group of a plurality of cells of the 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.
[0023]
　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.
[0024]
　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.
[0025]
　　
　In the present embodiment, 10 ms radio frame consists of (in milliseconds) (radio frame) is defined. Each radio frame includes two half-frames. Time interval of half-frame is 5ms. Each half-frame consists of five subframes. Time interval of the subframe is 1 ms, is defined by two consecutive slots. Time interval of the slot is 0.5 ms. I th subframe in the radio frame is composed of a (2 × i) th slot and (2 × i + 1) th slot. That is, in each radio frame, 10 subframes are defined.
[0026]
　Sub-frame includes a downlink sub-frame, the uplink sub-frame, and special sub-frame and the side link sub-frame.
[0027]
　Downlink subframe is a subframe are reserved for downlink transmission. Uplink subframe is a subframe are reserved for uplink transmission. Special sub-frame is made up of three fields. Three fields, DwPTS (Downlink Pilot Time Slot), GP (Guard Period), and UpPTS the (Uplink Pilot Time Slot). DwPTS, the length of the sum of the GP, and UpPTS is 1ms. DwPTS is a field that is reserved for transmission downlink. UpPTS is a field that is reserved for the uplink transmission. GP is a field downlink transmission and uplink transmission is not performed. Note that special subframe may be configured only by the DwPTS and GP, it may be constituted only by GP and UpPTS. Special subframe is located between the TDD (Time Division Duplex) in the downlink subframe and the uplink subframe is used to switch to the uplink sub-frame from the downlink subframe. Side subframe is a subframe that is reserved or set for the side link communication. Side links are used for proximity direct communication and direct proximity detection between terminals.
[0028]
　Single radio frame is a downlink subframe, an uplink subframe, and a special subframe and / or the side subframe. Also, a single radio frame is a downlink subframe, an uplink subframe may be configured only in special subframe or the side subframe.
[0029]
　A plurality of radio frame structure is supported. Radio frame structure is defined by the frame structure type. Frame structure type 1 applicable only to FDD (Frequency Division Duplex). Frame structure type 2 is applicable only to TDD. Frame structure type 3 is applicable only to the operation of the LAA (Licensed Assisted Access) secondary cell.
[0030]
　In the frame structure type 2, a plurality of uplink - downlink configuration is defined. Uplink - in the downlink arrangement, each of the 10 sub-frames in one radio frame, downlink subframe, corresponding to one uplink subframe and special subframe. Subframe 0, subframe 5 and DwPTS are always reserved for downlink transmission. UpPTS and sub-frame immediately following the special subframe is always reserved for uplink transmission.
[0031]
　In the frame structure type 3, 10 sub-frames within one radio frame is reserved for downlink transmission. Terminal 2 can handle a subframe PDSCH or detection signal is not transmitted as an empty subframe. Terminal device 2, a predetermined signal, without this being detected at the subframe is channel and / or downlink transmission is assumed that the absence of any signal and / or channel to the sub-frame. Downlink transmission is occupied by one or more contiguous subframes. Its first subframe of the downlink transmission, where may be initiated even from within that sub-frame. The last sub-frame of the downlink transmission, either completely occupied, either exclusively in the time interval defined by the DwPTS, may be either.
[0032]
　Note that in the frame structure type 3, 10 sub-frames within one radio frame may be reserved for uplink transmission. Further, each of the 10 sub-frames within one radio frame, downlink subframe, an uplink subframe, may correspond to any of the special subframe and the side subframe.
[0033]
　The base station apparatus 1 in the DwPTS of the special subframe may transmit a downlink physical channel and a downlink physical signals. The base station apparatus 1 in the DwPTS of the special subframe, can limit the transmission of the PBCH. The terminal apparatus 2, in the UpPTS of the special subframe may transmit uplink physical channels and uplink physical signals. The terminal apparatus 2, in the UpPTS of the special subframe, can limit the transmission of part of the uplink physical channels and uplink physical signals.
[0034]
　The time interval in one transmission is referred to as TTI (Transmission Time Interval), in LTE, it is defined 1ms (the 1 sub-frame) and 1 TTI.
[0035]
　　
　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.
[0036]
　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.
[0037]
　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.
[0038]
　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).
[0039]
　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.
[0040]
　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.
[0041]
　　
　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).
[0042]
　The combination of predetermined parameters to be set in NR cell, as a parameter set can be defined in advance plural kinds.
[0043]
　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.
[0044]
　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.
[0045]
　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.
[0046]
　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.
[0047]
　　
　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.
[0048]
　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.
[0049]
　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.
[0050]
　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.
[0051]
　　
　In the present embodiment, the physical channels and physical signals are used.
[0052]
　Physical channel includes a downlink physical channel, uplink physical channels and the side link physical channel. Physical signals, downlink physical signals, including uplink physical signals and side link physical signals.
[0053]
　Physical channels and physical signals in the LTE is referred to as LTE physical channel and LTE physical signals. Physical channels and physical signals in the NR is also called respectively NR physical channels and NR physical signals. LTE physical channels and NR physical channel may be defined as a different physical channel respectively. LTE physical signals and NR physical signals can be defined as different physical signals. In the description of this embodiment, LTE physical channel and NR physical channels are simply referred to as physical channels, LTE physical signals and NR physical signal is simply referred to as physical signals. That is, description for the physical channel can be applied to any of the LTE physical channel and NR physical channel. Description of the physical signal can be applied to any of the LTE physical signals and NR physical signals.
[0054]
　　
　Description for the physical channel and the physical signal in LTE is applicable to NR physical channels and NR physical signals. NR physical channels and NR physical signal is referred as follows.
[0055]
　It is NR downlink physical channel, NR-PBCH, NR-PCFICH, NR-PHICH, NR-PDCCH, NR-EPDCCH, NR-MPDCCH, NR-R-PDCCH, NR-PDSCH, and including NR-PMCH.
[0056]
　NR downlink physical signals, including NR-SS, NR-DL-RS and NR-DS. NR-SS is, including NR-PSS and NR-SSS. NR-RS comprises NR-CRS, NR-PDSCH-DMRS, NR-EPDCCH-DMRS, NR-PRS, NR-CSI-RS, and NR-TRS like.
[0057]
　NR uplink physical channel includes NR-PUSCH, NR-PUCCH, and NR-PRACH and the like.
[0058]
　NR uplink physical signals include NR-UL-RS. NR-UL-RS comprises like NR-UL-DMRS and NR-SRS.
[0059]
　NR side link physical channel includes NR-PSBCH, NR-PSCCH, NR-PSDCH, and NR-PSSCH the like.
[0060]
　　
　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.
[0061]
　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.
[0062]
　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.
[0063]
　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.
[0064]
　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.
[0065]
　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.
[0066]
　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.
[0067]
　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.
[0068]
　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, resource ZP CSI-RS is used for adjacent cells to transmit the NZP CSI-RS. Further, for example, resources ZP CSI-RS is used to measure the CSI-IM. 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.
[0069]
　　
　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,.
[0070]
　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.
[0071]
　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.
[0072]
　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.
[0073]
　　 UL-DMRS is associated with the transmission of the PUSCH or PUCCH. UL-DMRS are multiplexed PUSCH or PUCCH and time. The base station apparatus 1 may use UL-DMRS in order to perform propagation path compensation of the PUSCH or PUCCH. In the description of this embodiment, the transmission of the PUSCH also includes multiplexed and transmitted PUSCH and UL-DMRS. In the description of this embodiment, PUCCH transmission also includes transmitting by multiplexing PUCCH and UL-DMRS.
[0074]
　SRS is not related to the transmission of the PUSCH or PUCCH. The base station apparatus 1 may use SRS to measure channel state of the uplink.
[0075]
　SRS is transmitted with the last symbol in the uplink subframe. That, SRS is arranged at the end of the symbols in the uplink subframe. The terminal apparatus 2, the symbols of a cell, can limit the SRS, PUCCH, the simultaneous transmission of the PUSCH and / or PRACH. The terminal apparatus 2, in the uplink subframe of a cell, and transmits the PUSCH and / or PUCCH using symbols excluding the last symbol of the uplink subframe, the last symbol of the uplink subframe it can transmit the SRS with. That is, in an uplink subframe of a cell, the terminal device 2 can transmit the SRS, and PUSCH and PUCCH, the.
[0076]
　In SRS, as trigger type of different SRS, trigger type 0SRS and Trigger Type 1SRS are defined. Trigger type 0SRS is by upper layer signaling, is transmitted when the parameters are set regarding trigger type 0SRS. Trigger type SRS is by high layer signaling, the parameters are set regarding trigger type SRS, DCI format 0,1A, 2B, 2C, and transmitted when the transmission by SRS request included in 2D or 4, it is requested. Incidentally, SRS request for DCI format 0,1A or 4, included in both the FDD and TDD, DCI format 2B, 2C, or for 2D, is included only in the TDD. If the transmission of the transmission and trigger type 1SRS trigger type 0SRS occurs in the same sub-frame of the same serving cell, the transmission of the trigger type 1SRS takes precedence. Trigger type 0SRS is also referred to as a periodic SRS. Trigger type 1SRS is also referred to as non-periodic SRS.
[0077]
　　
　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.
[0078]
　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.
[0079]
　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.
[0080]
　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.
[0081]
　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.
[0082]
　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.
[0083]
　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.
[0084]
　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.
[0085]
　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).
[0086]
　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.
[0087]
　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.
[0088]
　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).
[0089]
　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.
[0090]
　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.
[0091]
　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.
[0092]
　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.
[0093]
　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.
[0094]
　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.
[0095]
　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.
[0096]
　　
　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.

claims

A measurement unit for performing downlink measurements based on the downlink reference signal,
　a transmitter for transmitting a first uplink reference signal based on the first set for the measurement for the management of radio resources,
comprising a
　said transmission unit, when the first condition is satisfied, transmits the first uplink reference signal,
　the measurement unit, when the second condition is satisfied, performs the downlink measurement,
　the terminal device.
[Requested item 2]
　Wherein when the first condition is satisfied, the terminal device is a connected mode,
　the case where the second condition is satisfied, the terminal device is in an idle mode or an inactive mode, the terminal apparatus according to claim 1 .
[Requested item 3]
　Wherein when the first condition is satisfied, the target time is a resource that DRX (Discontinuous Reception) in a section,
　the case where the second condition is satisfied, the time resources of the target is out of DRX interval, claim 1 terminal device according to.
[Requested item 4]
　The transmission unit, when the third condition is satisfied, the first to transmit the uplink reference signal, when the fourth condition is satisfied, the first set and on the basis of the different second set transmitting a second uplink reference signal, the terminal device according to claim 1.
[Requested item 5]
　Wherein when the third condition is satisfied, the frequency resources of the target is the deactivation,
　the case fourth condition is satisfied, the frequency resources of the target is the activation, the terminal device according to claim 4.
[Requested item 6]
　Wherein when the third condition is satisfied, a transmission timing time resource of the target is indicated by the first setting,
　the case fourth condition is satisfied, setting time resources of the target the second in a transmission timing is instructed, and not the transmission timing specified by the first set, the terminal device according to claim 4.
[Requested item 7]
　At a predetermined frequency resource, the first uplink reference signal and said second uplink reference signal is not be transmitted simultaneously, the terminal device according to claim 4.
[Requested item 8]
　A transmission unit for transmitting a downlink reference signal,
　and transmitting the first of the first uplink reference signal based on the setting for the measurement for the management of radio resources if the first condition is satisfied, the second condition the transmitted by the downlink terminal device that performs downlink measurement on the basis of the link reference signal if it meets, a measurement unit for performing a first uplink measurement on the basis of the first uplink reference signal
base station comprising apparatus.
[Requested item 9]
　The base station apparatus further comprises a transfer unit for transferring the measurement information obtained by the first uplink measurements to the neighbor BS, the base station apparatus according to claim 8.
[Requested item 10]
　Wherein when the first condition is satisfied, the terminal device is a connected mode,
　the case where the second condition is satisfied, the terminal device is in an idle mode or an inactive mode, the base station according to claim 8 apparatus.
[Requested item 11]
　Wherein when the first condition is satisfied, the target time is a resource that the DRX interval,
　wherein when the second condition is satisfied, the time resources of the target is out of DRX interval, the base according to claim 8 office equipment.
[Requested item 12]
　The measuring unit, when the third condition is satisfied, said first performs uplink measurements, when the fourth condition is satisfied, the said terminal based on a different second set from the first set sent by the device, a second uplink measurement on the basis of the second uplink reference signal, the base station apparatus according to claim 8.
[Requested item 13]
　Wherein when the third condition is satisfied, the frequency resources of the target is the deactivation,
　the case fourth condition is satisfied, the frequency resources of the target is the activation, the base station apparatus according to claim 12 .
[Requested item 14]
　Wherein when the third condition is satisfied, a transmission timing time resource of the target is indicated by the first setting,
　the case fourth condition is satisfied, setting time resources of the target the second in a transmission timing is instructed, and not the transmission timing specified by the first set, the base station apparatus according to claim 12.
[Requested item 15]
　At a predetermined frequency resource, the first said an uplink reference signal of the second uplink reference signal and is not to be transmitted simultaneously, the base station apparatus according to claim 12.
[Requested item 16]
　If the second condition is satisfied, and performing the downlink measurements based on the downlink reference signal,
　if the first condition is satisfied, the based on the first set for the measurement for the management of radio resources transmitting a first uplink reference signal,
the method executed by a processor comprising a.
[Requested item 17]
　Transmitting a downlink reference signal,
　if the first condition is satisfied and sends a first first uplink reference signal based on the setting for the measurement for the management of radio resources, the second condition and performing the first uplink measurement on the basis of the transmitted, the first uplink reference signal by the terminal apparatus for performing downlink measurements based on the downlink reference signal if it meets
executed by a processor comprising methods.