The present invention relates to a base station, a terminal device, a first terminal device, a method, a program, a recording medium, and a system.
Background technology
[0002]
　In 3GPP (3rd Generation Partnership Project), specifications of NR (New Radio), which is a 5th generation mobile communication system, are being formulated. The NR is significantly different from LTE (Long Term Evolution), which is a current mobile communication system, and the transmission / reception bandwidth of each terminal device may be different (see, for example, Non-Patent Documents 1, 2 and 3).
[0003]
　Further, in a general mobile communication system, the terminal device transmits HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgement) information indicating whether or not the data received by the downlink can be correctly decoded by the uplink. In NR, PUCCH (Physical Uplink Control Channel) or PUSCH (Physical Uplink Shared Channel) is used as a physical channel for transmitting UCI (Uplink Control Information) including this HARQ-ACK information.
[0004]
　For example, Patent Document 1 discloses that the base station dynamically determines a PUCCH resource from the candidates notified to the terminal device in advance and notifies the terminal device.
[0005]
　The PUCCH used in NR is expected to have the same structure as the PUCCH format 1 / 1a / 1b used in LTE. One of the specific commonalities is that in-slot frequency hopping is supported. When frequency hopping is performed in such PUCCH transmission, for example, as described in Non-Patent Document 1, the maximum transmission bandwidth of each terminal device may differ in NR, and therefore, within the uplink system band. It may be necessary to change (retune) the transmission band of. Specifically, a terminal device having a maximum transmission bandwidth smaller than the uplink system bandwidth may need to perform frequency hopping using both ends of the uplink system band by performing the above-mentioned retuning.
[0006]
　Here, retuning accompanied by a change in the center frequency requires a time of 50 microseconds to 200 microseconds, for example, as described in Non-Patent Document 4.
Advanced technical literature
Patent documents
[0007]
Patent Document 1: Japanese Patent Application Laid-Open No. 2014-504061
Non-patent literature
[0008]
非特許文献1 : RAN WG1 “LS on UE RF Bandwidth Adaptation in NR”, 3GPP TSG RAN WG1 Meeting #87. Reno, USA, 14-18 November 2016. R1-1613663
非特許文献2 : RAN WG1 NR Ad-Hoc#2 “Bandwidth part configuration and frequency resource allocation”, 3GPP TSG RAN WG1 NR Ad-Hoc#2. Qingdao, P.R. China 27th - 30th June 2017. R1-1710164
非特許文献3 : RAN WG1 “Further views on wider bandwidth operations for NR”, 3GPP TSG RAN WG1 Meeting #89. Hangzhou, P.R. China 15th - 19th May 2017. R1-1708494
非特許文献4 : RAN WG4 “Reply LS on UE RF Bandwidth Adaptation in NR”, 3GPP TSG RAN WG1 Meeting #88bis. Spokane, USA, 3-7 April 2017. R1-1704179 (R4-1702029)
Outline of the invention
Problems to be solved by the invention
[0009]
　However, in order to perform retuning, for example, it is necessary to insert a guard section. Therefore, the communication resources that can be used for PUCCH transmission are reduced, which may cause a reduction in coverage.
[0010]
　An object of the present invention is a base station that allows a first terminal device to transmit a physical uplink control channel to a base station without retuning, regardless of the partial band used by the first terminal device. The present invention is to provide a terminal device, a first terminal device, a method, a program, a recording medium, and a system.
Means to solve problems
[0011]
　According to one aspect of the invention, the base station has a communication processing unit that communicates with the first terminal device in the active uplink Bandwidth part used by the first terminal device in the uplink system band. First control information that identifies the relative resources of the physical uplink control channel within the active uplink Bandwidth part for use by the first terminal device to transmit the physical uplink control channel. It is transmitted to the first terminal device.
[0012]
　According to one aspect of the invention, the terminal device comprises a communication processing unit that communicates with the base station on the active uplink Bandwise part of the uplink system band and is used for transmission of the physical uplink control channel. First control information that identifies the resources of the physical uplink control channel relative to the active uplink Bandwidth part of the above is received from the base station.
[0013]
　According to one aspect of the invention, the base station comprises a communication processing unit that communicates with the first terminal device within a partial band used by the first terminal device in the uplink system band. The partial band includes the physical uplink control channel region used by the first terminal device.
[0014]
　According to one aspect of the present invention, the first terminal device comprises a communication processing unit that communicates with a base station within a partial band of the uplink system band used by the first terminal device. The partial band includes the physical uplink control channel region used by the first terminal device.
[0015]
　According to one aspect of the invention, the first method comprises communicating with the first terminal device within a partial band used by the first terminal device in the uplink system band. Yes, the partial band includes a physical uplink control channel region used by the first terminal device.
[0016]
　According to one aspect of the invention, the second method comprises communicating with the base station within the partial band used by the first terminal device of the uplink system band, said portion. The band includes the physical uplink control channel region used by the first terminal device.
[0017]
　According to one aspect of the invention, the first program causes the processor to communicate with the first terminal device within a partial band used by the first terminal device in the uplink system band. The partial band includes a physical uplink control channel region used by the first terminal device.
[0018]
　According to one aspect of the present invention, the second program is a program that causes the processor to communicate with the base station within the partial band used by the first terminal device in the uplink system band. The partial band includes a physical uplink control channel region used by the first terminal device.
[0019]
　According to one aspect of the present invention, the processor is that the first recording medium communicates with the first terminal device within the partial band used by the first terminal device in the uplink system band. A non-temporary recording medium readable by a computer that has recorded a program to be executed, the partial band including a physical uplink control channel region used by the first terminal device.
[0020]
　According to one aspect of the present invention, the second recording medium is a program that causes the processor to execute communication with the base station within the partial band used by the first terminal device in the uplink system band. A non-temporary recording medium readable by the computer on which it was recorded, the partial band comprising a physical uplink control channel region used by the first terminal device.
[0021]
　According to one aspect of the invention, the system comprises a base station having a communication processing unit that communicates with the first terminal device within a partial band used by the first terminal device in the uplink system band. A first terminal device having a communication processing unit that communicates with the base station within the partial band is provided, and the partial band includes a physical uplink control channel region used by the first terminal device.
The invention's effect
[0022]
　According to the present invention, regardless of the partial band used by the first terminal device, the first terminal device can transmit the physical uplink control channel to the base station without retuning. It should be noted that according to the present invention, other effects may be produced in place of or in combination with the effect.
A brief description of the drawing
[0023]
FIG. 1 is a diagram showing a configuration example of a Long PUCCH when one slot is composed of 14 OFDM symbols.
FIG. 2 is a diagram showing a configuration example of a Long PUCCH when one slot is composed of seven OFDM symbols.
FIG. 3 is a diagram showing an example of a combination of Δ shift , cyclic shift number u, and orthogonal cover code number c.
FIG. 4 is a schematic diagram of a case where one terminal device transmits HARQ-ACK information on the Long PUCCH.
FIG. 5 is a diagram showing a specific example of a resource position in which each of the terminal devices A to D having a maximum transmission bandwidth smaller than the uplink system bandwidth performs frequency hopping.
FIG. 6 is an explanatory diagram showing an example of a schematic configuration of a system 1 according to an embodiment of the present invention.
FIG. 7 is a block diagram showing an example of a schematic configuration of a base station 100 according to a first embodiment.
FIG. 8 is a block diagram showing an example of a schematic configuration of the terminal device 200 according to the first embodiment.
FIG. 9 is a diagram showing a sub-band according to the first specific example.
FIG. 10 is a diagram showing a subband according to a second specific example.
FIG. 11 is a diagram showing a specific example of two or more candidate bands set in the terminal group A.
FIG. 12 is a diagram showing a specific example of two or more candidate bands set in the terminal group B.
FIG. 13 is a diagram showing the positions of Long PUCCH used by terminal group A and terminal group B, respectively.
FIG. 14 is a diagram for explaining a specific example of a relative resource number for a Long PUCCH resource in a subband or a candidate band.
FIG. 15 is a block diagram showing an example of a schematic configuration of a base station 100 according to a second embodiment.
FIG. 16 is a block diagram showing an example of a schematic configuration of a terminal device 200 according to a second embodiment.
Embodiment for carrying out the invention
[0024]
　Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, the same reference numerals may be given to elements that can be similarly described, so that duplicate description may be omitted.
[0025]
　The explanations are given in the following order.
　1. 1. Related technology
　2. Outline of the embodiment of the present invention
　3. System configuration
　4. First Embodiment
　　4.1. Base station configuration
　　4.2. Configuration of terminal device
　　4.3. Technical features
　　4.4. Specific example
　5. Second Embodiment
　　5.1. Base station configuration
　　5.2. Configuration of terminal device
　　5.3. Technical features
　6. Other forms
[0026]
　<< 1. Related Techniques >> As
　a technique related to the embodiment of the present invention, PUCCH (Physical Uplink Control Channel) mainly used in NR will be described.
[0027]
　In NR, there are two types of PUCCH having different time lengths, that is, a PUCCH having a short time length (hereinafter referred to as "Short PUCCH") and a PUCCH having a long time length (hereinafter referred to as "Long PUCCH").
[0028]
　Of these, Long PUCCH is composed of 4 to 14 OFDM (Orthogonal Frequency Division Multiplexing) symbols. In Long PUCCH, it is supposed to be used mainly for improving coverage.
[0029]
　Further, when the number of UCI bits transmitted by the Long PUCCH is 2 or less, it is expected that the structure will be the same as that of the LTE PUCCH format 1 / 1a / 1b from the contents of the agreement so far.
[0030]
　Specific common points are that frequency hopping in the slot is supported, BPSK (Binary Phase Shift Keying) or QPSK (Quadrature Phase Shift Keying) is used as the modulation method of HARQ-ACK information, and it is repeated in the time domain. It is mentioned that the sequence is multiplied by the modulated symbol, and that the orthogonal cover code in the time domain is applicable to UCI and RS (Reference Signal).
[0031]
　In NR, the slot is one of the scheduling units. In the case of Normal CP (Cyclic Prefix), one slot is composed of 7 or 14 OFDM symbols.
[0032]
　One RB (Resource Block) is composed of 12 continuous subcarriers in the frequency domain. Since the time length of RB in NR is undefined, "RB" is used as "the minimum unit of resource allocation in the frequency domain" in this embodiment. Further, what is referred to as "RB" in the present specification may be referred to as "PRB (Physical Resource Block)".
[0033]
　FIG. 1 is a diagram showing a configuration example of a Long PUCCH when one slot is composed of 14 OFDM symbols. Specifically, in the configuration example shown in FIG. 1 (A), 14 OFDM symbols are used for the transmission of the Long PUCCH. A Long PUCCH having such a configuration is realized when all OFDM symbols in one slot can be used for uplink transmission.
[0034]
　On the other hand, in the configuration example shown in FIG. 1 (B), 10 OFDM symbols are used for the transmission of Long PUCCH. This is an example using a slot configuration in TDD (Time Division Duplex). Specifically, after the PDCCH (Physical Downlink Control Channel) is transmitted at the beginning of the slot, a guard section necessary for switching from the downlink to the uplink is inserted. Subsequently, a Short PUCCH and / or an SRS (Sounding Reference Signal) is transmitted behind the slot. A total of 4 OFDM symbols are used for these transmissions, and the remaining 10 OFDM symbols are used for Long PUCCH transmissions.
[0035]
　FIG. 2 is a diagram showing a configuration example of Long PUCCH when one slot is composed of seven OFDM symbols. In the configuration example shown in FIG. 2A, seven OFDM symbols are used for the transmission of the Long PUCCH. In the configuration example shown in FIG. 2B, four OFDM symbols are used for the transmission of the Long PUCCH.
[0036]
　It is possible to multiplex UCIs for a plurality of terminal devices in one RB included in the Long PUCCH. This multiplexing is achieved by using different combinations of cyclic shifts and orthogonal cover codes for each terminal device. In this embodiment, the multiplexing method in the PUCCH form 1 / 1a / 1b of LTE will be described.
[0037]
　First, multiplexing by cyclic shift is realized by using a CAZAC (Constant Amplitude Zero Auto-Correlation) series for UCI and RS transmission. The CAZAC series has a property that the autocorrelation value becomes 0 when the cyclic shift amount is other than 0. Cyclic shift represents a shift process that moves the last element of the series to the beginning in order. An example of the CAZAC series is the Zadoff-Chu series. Further, in LTE, CGS (Computer Generated Sequences) is used as the CAZAC sequence when the sequence length is 12 or 24.
[0038]
　When the time length of 1 OFDM symbol excluding the CP part is equally divided into 12 pieces and the time length is ΔT, u × ΔT (u is an integer from 0 to 11) is cyclically shifted to a maximum of 12 pieces. UCI and RS can be multiplexed. Here, in order to maintain the orthogonality between the terminals, it is necessary to make the minimum interval of the cyclic shift larger than the maximum delay path of the propagation path. In LTE, the minimum interval Δshift × ΔT of cyclic shift is adjusted by using the parameter Δshift ( Δshift = 1, 2, 3) common to cells . Therefore, the maximum number of multiplexes due to cyclic shift is 12 / Δ shift .
[0039]
　Multiplication by orthogonal cover code is realized by block spreading UCI and RS over a plurality of OFDM symbols. By using an orthogonal cover code, it is possible to block-spread and multiplex the same number of complex symbols as the series length. Here, the orthogonal cover code is applied independently for each of UCI and RS before and after frequency hopping, and its sequence length is equal to the number of OFDM symbols assigned to each. As a result, the maximum number of multiplexes becomes the minimum number of OFDM symbols assigned to each of UCI and RS before and after frequency hopping.
[0040]
　The maximum number of multiplexes by the orthogonal cover code is 3 in the case of the configuration example shown in FIG. 1 (A), and 2 in the configuration example shown in FIG. 1 (B). On the other hand, in the configuration examples shown in FIGS. 2A and 2B, since RS is composed of a single OFDM symbol after frequency hopping, multiplexing by an orthogonal cover code is not performed.
[0041]
　The multiply perfect number N of UCI per RB of Long PUCCH is represented by the product of the maximum multiply perfect number by cyclic shift and the maximum multiply perfect number by quadrature cover code. For example, if the maximum multiplex by cyclic shift is 4 (that is, Δ shift = 3) and the maximum multiplex by orthogonal cover code is 3, 4 × 3 = 12 UCIs can be multiplexed per RB.
[0042]
　FIG. 3 is a diagram showing an example of a combination of Δ shift , cyclic shift number u, and orthogonal cover code number c. By referring to the combinations as shown in FIG. 3, resources that can be multiplexed in 1 RB of Long PUCCH can be numbered. Note that FIG. 3 is an example, and for example, different numbering may be performed for each cell.
[0043]
　FIG. 4 is a schematic diagram when one terminal device transmits HARQ-ACK information on the Long PUCCH. The base station transmits data addressed to the terminal device on the PDSCH (Physical Downlink Shared Channel), and transmits DCI (Downlink Control Information) including the allocation information of the data on the PDCCH (Physical Downlink Control Channel). On the other hand, the terminal device receives the DCI destined for itself on the PDCCH, and then receives the data on the PDSCH based on the DCI. Then, the terminal device transmits HARQ-ACK information indicating whether or not the data can be correctly decoded on the Long PUCCH in the uplink slot.
[0044]
　In the NR, a partial band (Bandwidth part) composed of continuous RBs is individually set for the terminal device by the uplink and the downlink. The number of RBs set in the partial band is equal to or less than the maximum bandwidth supported by each terminal device. One or more partial bands are set for each terminal device. The terminal device receives the downlink signal for the active downlink subband among the set subbands, and transmits the uplink signal using the active uplink subband.
[0045]
　<< 2. Outline of the embodiment of
　the present invention >> First, the outline of the embodiment of the present invention will be described.
[0046]
　(1) Technical Issues
　As described above, since the maximum transmission bandwidth of each terminal device may differ in NR, when frequency hopping is performed in the transmission of Long PUCCH, the hopping interval of the frequency domain is performed for each terminal device. Can also be different. For example, a terminal device having a maximum transmission bandwidth smaller than the uplink system bandwidth may perform frequency hopping other than the end of the uplink system band for transmission of Long PUCCH.
[0047]
　FIG. 5 is a diagram showing a specific example of a resource position in which each of the terminal devices A to D having a maximum transmission bandwidth smaller than the uplink system bandwidth performs frequency hopping. Fragmented resources can occur as shown in FIG. The existence of such fragmented resources is a factor that reduces the degree of freedom in resource allocation of PUSCH.
[0048]
　In NR, it was agreed that both CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) and DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing) would be used as uplink transmission waveforms. ing. Further, when DFT-s-OFDM is used as the transmission waveform of PUSCH, it is assumed that only continuous RB allocation is supported.
[0049]
　Here, considering the existence of fragmentary RBs as shown in FIG. 5 described above, in the case of DFT-s-OFDM, the number of consecutive RBs that can be assigned to one terminal device is limited. Become. Further, in the case of CP-OFDM, discontinuous RB allocation is possible, but considering the overhead of resource allocation information, it is difficult to allocate resources so as to utilize all RBs existing in fragments. Therefore, there is a possibility that the unused RB increases and the utilization efficiency of the radio resource decreases.
[0050]
　As a method of preventing the generation of the fragmented resource described above, it exists at the end of the subband by setting multiple subbands within the uplink system band, for example, as disclosed in the references below. It has been proposed to send PUCCH on the resource.
　[Reference] CMCC “Discussion on subband-based PUCCH resource allocation and indication”, 3GPP TSG RAN WG1 Meeting NR Ad-Hoc # 2. Qingdao, China, 27-30 June 2017. R1-1710782
[0051]
　However, the above references do not disclose any restrictions on the number of RBs in the subband and the starting position in the frequency domain. Therefore, if an arbitrary number of RB subbands can be arranged at an arbitrary position in the frequency domain, the overhead for notifying the terminal device of information about the subband becomes large.
[0052]
　Here, by performing retuning to change the transmission band within the uplink system band, a terminal device having a maximum transmission bandwidth smaller than the uplink system bandwidth performs frequency hopping using both ends of the uplink system band. It becomes possible. However, retuning with a change in center frequency requires, for example, 50 to 200 microseconds. In order to perform such retuning, for example, it is necessary to insert a guard section, the number of OFDM symbols that can be used for transmitting the Long PUCCH decreases, and this may cause a reduction in coverage.
[0053]
　(2) Technical Features In
　the embodiment of the present invention, for example, the base station is a communication processing unit that communicates with the first terminal device within a partial band used by the first terminal device in the uplink system band. , The partial band includes the physical uplink control channel region used by the first terminal device.
[0054]
　Further, in the embodiment of the present invention, for example, the first terminal device includes a communication processing unit that communicates with a base station within a partial band used by the first terminal device in the uplink system band. The partial band includes a physical uplink control channel region used by the first terminal device.
[0055]
　According to the above embodiment, for example, regardless of the partial band used by the first terminal device, the first terminal device can transmit the physical uplink control channel to the base station without retuning. .. More specifically, even if the partial bandwidth of the first terminal device is smaller than the uplink system band, it is possible for the first terminal device to transmit the physical uplink control channel to the base station without retuning. become.
[0056]
　The above-mentioned technical features are specific examples of the embodiments of the present invention, and of course, the embodiments of the present invention are not limited to the above-mentioned technical features.
[0057]
　<< 3. System Configuration >>
　An example of the configuration of the system 1 according to the embodiment of the present invention will be described with reference to FIG. FIG. 6 is an explanatory diagram showing an example of a schematic configuration of the system 1 according to the embodiment of the present invention. Referring to FIG. 6, the system 1 includes a base station 100, a terminal device 200A, and a terminal device 200B. Hereinafter, the terminal device 200A and the terminal device 200B are collectively referred to as a terminal device 200.
[0058]
　For example, the system 1 is a system compliant with the standard / specification of the 3GPP (Third Generation Partnership Project). More specifically, for example, the system 1 may be a system compliant with the LTE / LTE-Advanced / LTE-Advanced Pro and / or SAE (System Architecture Evolution) standards / specifications. Alternatively, the system 1 may be a system compliant with the 5th generation (5G) / NR (New Radio) standard / specification. Of course, System 1 is not limited to these examples.
[0059]
　(1) Base station 100 The
　base station 100 is a node of a radio access network (RAN) and wirelessly communicates with a terminal device (for example, a terminal device 200A and a terminal device 200B) located in a coverage area. I do.
[0060]
　For example, the base station 100 may be an eNB (evolved Node B), a gNB (generation Node B) in 5G, or a TRP (Transmission Reception Point). The base station 100 may include a plurality of units (or a plurality of nodes). The plurality of units (or a plurality of nodes) include a first unit (or a first node) that processes an upper protocol layer and a second unit (or a second node) that processes a lower protocol layer. It may be included. As an example, the first unit may be referred to as a central unit (Center / Central Unit: CU), and the second unit may be a distributed unit (DU) or an access unit (AU). May be called. As another example, the first unit may be referred to as a digital unit (DU), and the second unit may be referred to as a wireless unit (Radio Unit: RU) or a remote unit (Remote Unit: RU). May be called. The DU (Digital Unit) may be a BBU (Base Band Unit), and the RU may be an RRH (Remote Radio Head) or an RRU (Remote Radio Unit). Of course, the names of the first unit (or the first node) and the second unit (or the second node) are not limited to this example. Alternatively, the base station 100 may be a single unit (or a single node). In this case, the base station 100 may be one of the plurality of units (for example, one of the first unit and the second unit), and the other unit among the plurality of units (for example, one of the first unit and the second unit). For example, it may be connected to the first unit and the other of the second unit).
[0061]
　(2) Terminal device 200 The
　terminal device 200 performs wireless communication with the base station. For example, the terminal device 200 performs wireless communication with the base station 100 when it is located within the coverage area of ​​the base station 100. For example, the terminal device 200 is a UE (User Equipment). The terminal device 200 may be called a "wireless communication device", a "wireless communication terminal", a "user device", a "user terminal", a "mobile station" or the like instead of the "terminal device".
[0062]
　In this embodiment, the terminal device 200A has, for example, a maximum reception bandwidth and a maximum transmission bandwidth different from those of the terminal device 200B. More specifically, the terminal device 200A has a maximum receive bandwidth and a maximum transmission bandwidth smaller than that of the terminal device 200B. As described above, in the system 1, terminal devices having different maximum reception bandwidths / maximum transmission bandwidths coexist.
[0063]
　<< 4. First Embodiment >> A first embodiment of
　the present invention will be described with reference to FIGS. 7 to 14.
[0064]
　<4.1. Base Station Configuration>
　An example of the configuration of the base station 100 according to the first embodiment will be described with reference to FIG. 7. FIG. 7 is a block diagram showing an example of a schematic configuration of the base station 100 according to the first embodiment. Referring to FIG. 7, the base station 100 includes a wireless communication unit 110, a network communication unit 120, a storage unit 130, and a processing unit 140.
[0065]
　(1) Wireless communication unit 110 The
　wireless communication unit 110 wirelessly transmits and receives signals. For example, the wireless communication unit 110 receives a signal from the terminal device and transmits the signal to the terminal device.
[0066]
　(2) Network communication unit 120 The
　network communication unit 120 receives a signal from the network and transmits the signal to the network.
[0067]
　(3) Storage unit 130 The
　storage unit 130 temporarily or permanently stores programs (instructions) and parameters for the operation of the base station 100, as well as various data. The program includes one or more instructions for the operation of base station 100.
[0068]
　(4) Processing unit 140 The
　processing unit 140 provides various functions of the base station 100. The processing unit 140 includes a communication processing unit 141 and an information acquisition unit 143. The processing unit 140 may further include other components other than these components. That is, the processing unit 140 may perform operations other than the operations of these components. The specific operations of the communication processing unit 141 and the information acquisition unit 143 will be described in detail later.
[0069]
　For example, the processing unit 140 (communication processing unit 141) communicates with the terminal device (for example, the terminal device 200) via the wireless communication unit 110.
[0070]
　(5) Implementation Example The
　wireless communication unit 110 may be mounted by an antenna, a radio frequency (RF) circuit, or the like, and the antenna may be a directional antenna. The network communication unit 120 may be mounted by a network adapter and / or a network interface card or the like. The storage unit 130 may be mounted by a memory (for example, a non-volatile memory and / or a volatile memory) and / or a hard disk. The processing unit 140 may be implemented by one or more processors such as a baseband (BB) processor and / or other types of processors. The communication processing unit 141 and the information acquisition unit 143 may be implemented by the same processor, or may be separately implemented by different processors. The memory (storage unit 130) may be contained in the one or more processors, or may be outside the one or more processors.
[0071]
　The base station 100 may include a memory for storing a program (instruction) and one or more processors capable of executing the program (instruction). The one or more processors may execute the above program to perform the operation of the processing unit 140 (the operation of the communication processing unit 141 and / or the information acquisition unit 143). The above program may be a program for causing the processor to execute the operation of the processing unit 140 (the operation of the communication processing unit 141 and / or the information acquisition unit 143).
[0072]
　The base station 100 may be virtualized. That is, the base station 100 may be implemented as a virtual machine. In this case, the base station 100 (virtual machine) may operate as a virtual machine on a physical machine (hardware) including a processor, a memory, and the like, and a hypervisor.
[0073]
　<4.2. Configuration of Terminal Device>
　An example of the configuration of the terminal device 200 according to the first embodiment will be described with reference to FIG. FIG. 8 is a block diagram showing an example of a schematic configuration of the terminal device 200 according to the first embodiment. Referring to FIG. 8, the terminal device 200 includes a wireless communication unit 210, a storage unit 220, and a processing unit 230.
[0074]
　(1) Wireless communication unit 210 The
　wireless communication unit 210 wirelessly transmits and receives signals. For example, the wireless communication unit 210 receives a signal from the base station and transmits a signal to the base station.
[0075]
　(2) Storage unit 220 The
　storage unit 220 temporarily or permanently stores programs (instructions) and parameters for the operation of the terminal device 200, as well as various data. The program includes one or more instructions for the operation of the terminal device 200.
[0076]
　(3) Processing unit 230 The
　processing unit 230 provides various functions of the terminal device 200. The processing unit 230 includes a communication processing unit 231. The processing unit 230 may further include other components other than these components. That is, the processing unit 230 may perform operations other than the operations of these components. The specific operation of the communication processing unit 231 will be described in detail later.
[0077]
　For example, the processing unit 230 (communication processing unit 231) communicates with a base station (for example, the base station 100) via the wireless communication unit 210.
[0078]
　(4) Mounting example The
　wireless communication unit 210 may be mounted by an antenna, a radio frequency (RF) circuit, or the like. The storage unit 220 may be mounted by a memory (for example, a non-volatile memory and / or a volatile memory) and / or a hard disk. The processing unit 230 may be implemented by one or more processors such as a baseband (BB) processor and / or other types of processors. The communication processing unit 231 may be implemented by the same processor, or may be separately implemented by different processors. The memory (storage unit 220) may be contained in the one or more processors, or may be outside the one or more processors. As an example, the processing unit 230 may be implemented in the SoC (System on Chip).
[0079]
　The terminal device 200 may include a memory for storing a program (instruction) and one or more processors capable of executing the program (instruction). The one or more processors may execute the above program to perform the operation of the processing unit 230 (the operation of the communication processing unit 231). The above program may be a program for causing the processor to execute the operation of the processing unit 230 (the operation of the communication processing unit 231).
[0080]
　<4.3. Technical Features>
　Next, the technical features of the first embodiment will be described.
[0081]
　The base station 100 (communication processing unit 141) communicates with the first terminal device (terminal device 200A) within the partial band used by the first terminal device (terminal device 200A) in the uplink system band. The first terminal device (communication processing unit 231 of the terminal device 200A) communicates with the base station 100 within the partial band. The partial band includes a physical uplink control channel region used by the first terminal device (terminal device 200A).
[0082]
　With such a configuration, for example, regardless of the partial band used by the first terminal device (terminal device 200A), the first terminal device (terminal device 200A) bases the physical uplink control channel without retuning. It becomes possible to transmit to the station 100. More specifically, even if the partial band of the first terminal device (terminal device 200A) is smaller than the uplink system band, the physical uplink control is performed without retuning by the first terminal device (terminal device 200A). It becomes possible to transmit the channel to the base station 100.
[0083]
　(1) Partial band
　The partial band may include a plurality of physical uplink control channel regions used by the first terminal device (terminal device 200A). Here, the plurality of physical uplink control channel regions may be separated from each other in the frequency direction.
[0084]
　For example, when frequency hopping is performed for transmission of a physical uplink control channel, one of the plurality of physical uplink control channel regions described above is for transmitting the physical uplink control channel before frequency hopping. A region, one of the other physical uplink control channel regions, may be a region for transmitting a physical uplink control channel after frequency hopping.
[0085]
　Further, the uplink system band includes a plurality of sub-bands, and each of the plurality of sub-bands includes a plurality of resource blocks continuous in the frequency direction. In the uplink system band having such a configuration, the partial band includes one or more of the plurality of sub-bands.
[0086]
　Further, the partial band may be one or more of the plurality of sub-bands. That is, the size and position of the partial band may be determined by one or more sub-bands.
[0087]
　Further, the partial band may be configured to correspond to a specific numerology. The particular Numerology may be a parameter based on at least one of a subcarrier interval, a TTI (Transmission Time Interval), and a CP (Cyclic Prefix) Type. Further, one or more partial bands may be semi-statically set for the terminal device for each CC (Component Carrier).
[0088]
　When a plurality of partial bands are set for one terminal device, different numerologies may be set for each of the plurality of partial bands. As the numerology different from each other, for example, the reference subcarrier interval f 0 may be set to 15 kHz, and the other subcarrier intervals may be set to f sc = 2 n × f 0 . That is, the subcarrier interval may be a power of 2 and may be a scalable value. Further, a different CP Type may be set for each of the plurality of partial bands. That is, either Normal CP or Extended CP may be set for each of the partial bands.
[0089]
　Further, the partial band used by the first terminal device (terminal device 200A) is within the partial band used by the second terminal device (terminal device 200B) different from the first terminal device (terminal device 200A). May include one or more of the subbands included in.
[0090]
　A specific subband configuration example will be described later.
[0091]
　(2) Physical uplink control channel area
　The physical uplink control channel area is located within a sub-band included in the partial band.
[0092]
　For example, when the subband includes two or more subbands, the physical uplink control channel region is located within one subband of the two or more subbands included in the subband.
[0093]
　The physical uplink control channel region may be located in the sub-band at the end of the two or more sub-bands. Here, the sub-band at the end is the lowest sub-band in the frequency direction or the highest sub-band in the frequency direction among the two or more sub-bands.
[0094]
　Here, when the partial band includes a plurality of physical uplink control channel regions separated from each other in the frequency direction as described above, the respective physical uplink control channel regions are, for example, first and second physical uplink control. The channel area. In this case, the first and second physical uplink control channel regions are, for example, located in different subbands from each other. That is, the first physical uplink control channel region is located within one subband of the two or more subbands included in the subband, and the second physical uplink control channel region is , The first physical uplink control channel region of the two or more sub-bands included in the sub-band is located in one sub-band different from the sub-band in which the first physical uplink control channel region is located. The first and second physical uplink control channel regions are not limited to the above cases, and may be included in the same sub-band at positions separated from each other in the frequency direction.
[0095]
　Further, the physical uplink control channel region is located at a predetermined position in the subband. Here, the predetermined place is a place at the end of the sub-band, or a place separated from the end of the sub-band by a predetermined interval. For example, the physical uplink control channel region may be located between the end of the sub-band and a location 20%, 25%, 50% of the width of the sub-band from the end.
[0096]
　-Candidate band
　The physical uplink control channel region may be located in one of the two or more candidate bands in the partial band. Each of the two or more candidate bands is one sub-band within the sub-band, or two or more sub-bands continuous in the frequency direction within the sub-band.
[0097]
　For example, the specific positions of the first and second physical uplink control channel regions are as follows. For example, when the candidate band in which the physical uplink control channel region is located is composed of one subband, the first physical uplink control channel region is located at one end of the subband and is within the subband. The second physical uplink control channel region is located at the other end of the above. When the candidate band in which the physical uplink control channel region is located is composed of two or more sub-bands continuous in the frequency direction, the first physical up to the sub-band located at one end of the candidate band. The link control channel region is located, and the second physical uplink control channel region is located in the sub band located at the other end of the candidate band.
[0098]
　(3) The control information
　base station 100 (information acquisition unit 143) acquires the first control information for specifying the physical uplink control channel region, and the base station 100 (communication processing unit 141) acquires the first control information. The control information is transmitted to the first terminal device (terminal device 200A).
[0099]
　As described above, when the physical uplink control channel region is located within the sub-band included in the partial band, the sub-band in which the physical uplink control channel region is located is specified as the first control information. Control information is used.
[0100]
　Further, as described above, when the physical uplink control channel region is located in one of the two or more candidate bands in the partial band, the first control information is described above. Control information is used to identify the candidate band in which the physical uplink control channel region is located.
[0101]
　Specifically, as the first control information, for example, the following two types of indexes are used. First, one index is an index for identifying the candidate band in which the physical uplink control channel region is located from among a plurality of candidate bands in the uplink system band (hereinafter, referred to as an absolute index). be. The other index is an index for identifying the candidate band in which the physical uplink control channel region is located from the two or more candidate bands in the partial band (hereinafter, referred to as a relative index). be.
[0102]
　For example, if there is an agreement between the base station and the terminal device that the physical uplink control channel area is located in the sub band located at the end of the candidate band, the first terminal device (terminal device 200A) may be used. By identifying the candidate band based on the index, the sub-band in which the physical uplink control channel region is located can be specified.
[0103]
　Further, for example, the base station 100 (communication processing unit 141) may transmit DCI (Downlink Control Information) including the index to the first terminal device (terminal device 200A). Further, the base station 100 (communication processing unit 141) may transmit a MAC (Media Access Control) control element including the index to the first terminal device (terminal device 200A).
[0104]
　When the candidate band in which the physical uplink control channel region is located is identified by the first control information in this way, the base station 100 (information acquisition unit 143) identifies the two or more candidate bands. The second control information of may be acquired. Then, the base station 100 (communication processing unit 141) may transmit the second control information to the first terminal device (terminal device 200A).
[0105]
　Specifically, the base station 100 (communication processing unit 141) transmits the MAC control element including the second control information to the first terminal device (terminal device 200A). The base station 100 (communication processing unit 141) may transmit an RRC (Radio Resource Control) message including the second control information to the first terminal device (terminal device 200A).
[0106]
　<4.4. Specific Example>
　Next, a specific example of the processing performed in the system 1 will be described.
[0107]
　(1) Specific Example of Sub-Band-
　1st Specific Example
　FIG. 9 is a diagram showing a sub-band according to the first specific example. In the first specific example, as shown in FIG. 9 , the sub-band is set by equally dividing the uplink system band by the number of sub-bands N sb . If the number of RBs N UL RB in the uplink system band is not divisible by N sb , the difference in the number of RBs between the sub-bands can be set to 1 or less by the following equation as an example.
[ Equation 1]

　Here, N sb RB (n) represents the number of RBs in the nth subband.
[0108]
　As an example, when the number of RBs N UL RB of the uplink system band is 275 and the number of subbands N sb is 10, P = 5 according to the above equation. That is, the 0th to 4th subbands are composed of 28RB, and the 5th to 9th subbands are composed of 27RB.
[0109]
　Further, the number of RBs N RB per sub-band may be specified. Here, when the number of RBs in the uplink system band N UL RB is not divisible by N RB , as an example, the number of RBs in the sub band located at any end of the uplink system band is set to N UL RB　mod N RB. May be.
[0110]
　-Second Specific Example
　FIG. 10 is a diagram showing a sub-band according to the second specific example. In the second specific example, as shown in FIG. 10, a reserved area is provided.
[0111]
　Here, the reserved area is an area for fixedly securing the resources of Long PUCCH for each terminal device. Specifically, the reserved area is a Long PUCCH resource for the terminal device to send some request to the base station, such as SR (Scheduling Request) and Beam furniture recall request, and periodic CSI (Channel State Information). ) Is used as a resource of Long PUCCH for transmitting. In the reserved area, it is desirable that RBs at both ends of the uplink system band are used as resources for such a Long PUCCH. This is to avoid a decrease in the number of consecutive RBs that can be dynamically allocated due to the uplink system bandwidth being divided by the fixedly allocated resources.
[0112]
　Therefore, in the second specific example, as shown in FIG. 9, a total of N rsv RB RBs existing at both ends of the uplink system band are set as reserved areas. Then, in the second embodiment, from the uplink system band N rsv RB excluding pieces of RB RB number N ' UL RB sub-band number N sb is equally divided by. When N'UL RB is not divisible by N sb , the difference in the number of RBs between subbands can be set to 1 or less by the following formula as an example.
[Number 2]

　Here, N'sb RB (n) represents the number of RBs in the nth subband.
[0113]
　As an example, it is assumed that the number of RBs N UL RB of the uplink system band is 275, the number of subbands N sb is 10, and a total of 8 RBs of 4 RBs from the band end are reserved areas. In this case, P'= 7 according to the above equation. That is, the 0th to 6th subbands are composed of 27RB, and the 7th to 9th subbands are composed of 26RB.
[0114]
　Further, the number of RBs N RB per subband may be specified. Here, from the uplink system band N rsv RB excluding pieces of RB RB number N ' UL RB is N RB when not divisible by, for example, from the uplink system band N rsv RB bandwidth excluding the number of RB Of these, the number of RBs in the subband located at any end may be N'UL RB　mod N RB .
[0115]
-Notification of
　sub-band 　configuration The number of sub-bands N sb or the number of RBs per sub-band N RB may be notified for each cell, each terminal device, or each group to which the terminal device belongs. Further, the number of sub-bands N sb or the number of RBs per sub-band N RB may be included in the RMSI (Remaining Minimum System Information) or may be included in the RRC message.
[0116]
　Further, if an increase in overhead is allowed, the start RB position and the number of continuous RBs may be set for each subband.
[0117]
　(2) Specific Example of Candidate Band The
　base station 100 is, for example, selected from two or more subbands included in the partial band when the partial band is set in the first terminal device (terminal device 200A). Set the above two or more candidate bands. After that, when the partial band set in the first terminal device (terminal device 200A) becomes active, the base station 100 identifies one candidate band from the two or more candidate bands. , The information indicating the identified candidate band is notified to the first terminal device (terminal device 200A) as the first control information. After that, the first terminal device (terminal device 200A) transmits the Long PUCCH using the RBs in the sub band located at both ends of the candidate band notified from the base station 100.
[0118]
　For example, the candidate band is uniquely specified by the combination of the sub-band start position SB start and the number of consecutive sub-bands L CSBs . The setting value X that uniquely identifies this combination can be calculated by the following formula.
[Number 3]

At this time, the number of bits of the set value X is as follows.
[Number 4]

[0119]
　The base station 100 may directly notify the first terminal device (terminal device 200A) of the set value X by using the MAC control element and / or DCI without setting the candidate band. In such a notification method, for example, when the number of subbands N sb is 10, 6 bits are required for transmission of the set value X. In particular, when the set value X is notified using DCI, the 6 bits have a large overhead.
[0120]
　Therefore, the base station 100 notifies the first terminal device (terminal device 200A) in advance of the second control information for specifying the two or more candidate bands. Then, the base station 100 uses the MAC CE and / or DCI to obtain only the index (the first control information) for identifying one candidate band from the two or more candidate bands. It is transmitted to the terminal device (terminal device 200A) of. As a result, the number of bits for identifying the candidate band in which the physical uplink control channel region is located can be reduced.
[0121]
　Next, a candidate band set for two types of terminal groups having different partial bands will be described. First, it is assumed that a partial band having the same bandwidth as the uplink system band is set in the terminal group A, and a partial band having a bandwidth smaller than the uplink system band is set in the terminal group B. As an example, when the uplink system bandwidth is 50 MHz, the terminal group A is composed of a plurality of terminal devices having a maximum transmission bandwidth of 50 MHz, and the terminal group B is composed of a plurality of terminal devices having a maximum transmission bandwidth of 25 MHz. Consists of. For example, the first terminal device (terminal device 200A) is included in the terminal group B, and the second terminal device (terminal device 200B) is included in the terminal group A. Since the partial bandwidth is equal to or less than the maximum transmission bandwidth of the terminal device, the terminal group B may include a terminal device having a maximum transmission bandwidth of 50 MHz.
[0122]
　FIG. 11 is a diagram showing a specific example of two or more candidate bands set in the terminal group A. As shown in FIG. 11, when eight candidate bands are set in the terminal group A, the setting value table shown in Table 1 below is given and notified as the second control information. As a notification method of the set value table, for example, an RRC message and / or a MAC CE can be used.
[0123]
[Table 1]

[0124]
　From these candidate bands, the base station 100 uses MAC CE and / or DCI to notify the terminal group A of the index m of the candidate band in which the physical uplink control channel region is located. Since the number of bits required for this notification is 3, the number of bits can be reduced as compared with the case where the set value X is directly notified using 6 bits as described above.
[0125]
　FIG. 12 is a diagram showing a specific example of two or more candidate bands set in the terminal group B. As shown in FIG. 12, when four candidate bands are set in the terminal group B, for example, the set value X can be specified by the absolute index or the relative index.
[0126]
　In the specific example shown in FIG. 12, the absolute index identifies each candidate band with reference to an absolute subband number that uniquely identifies each subband # 0 to # 9 included in the uplink system band, for example. It is possible. Further, the relative index can identify each candidate band based on the relative sub-band number that uniquely identifies each sub-band (# 0) to (# 3) included in the partial band, for example. be.
[0127]
　When the absolute index is used, the setting value table shown in Table 2 below is given and notified as the second control information. Here, the "sub-band start position SB start " represents the start position with respect to the absolute sub-band number. As a notification method of the set value table, for example, an RRC message and / or a MAC CE can be used.
[0128]
[Table 2]

[0129]
　When the relative index is used, the set value table shown in Table 3 below is given and notified as the second control information. Here, the "sub-band start position SB start " represents the start position with respect to the relative sub-band number. As a notification method of the set value table, for example, an RRC message and / or a MAC CE can be used.
[0130]
[table 3]

[0131]
　As is clear from Tables 2 and 3, the number of bits required for notification of the set value table is 6 × 4 = 24 when using an absolute index and 4 × 4 = 16 when using a relative index. be. Therefore, when the number of bits is variable, the number of bits can be reduced by using a relative index. On the other hand, when an absolute index is used, there is an advantage that the partial band setting and the notification of the setting value table can be performed independently.
[0132]
　-Example of notification of the candidate band in which the physical uplink control channel area is located After the
　above setting value table is notified to each of the terminal groups A and B, the base station 100 uses the candidate band for transmitting the HARQ-ACK information. Index m, that is, the index m of the candidate band in which the physical uplink control channel region is located is notified to the terminal device.
[0133]
　As the notification method of the index m, DCI for scheduling the PDSCH corresponding to the HARQ-ACK information can be used. As a result, the index m can be dynamically notified for each PDSCH transmission, that is, for each transmission of HARQ-ACK information, and flexible uplink scheduling becomes possible.
[0134]
　If the DCI includes a repetition number, the system may be set to dynamically switch the index m for each number of subframes corresponding to the repetition number. Further, the DCI may include control information indicating that the index m is dynamically switched for each number of subframes corresponding to the reputation number. The index m may be different between the repeatedly transmitted subframes, and control information indicating this may be included in the DCI.
[0135]
　If dynamic control is not required, the index m may be notified using an RRC message and / or MAC CE.
[0136]
　FIG. 13 is a diagram showing the positions of Long PUCCH used by the terminal group A and the terminal group B, respectively. In the notification example shown in FIG. 13, it is assumed that the terminal group A is notified of the indexes m = 2, 3, 6 and the terminal group B is notified of the index m = 3. The sub-band number (absolute sub-band number in the example of FIG. 13) is the band from # 0 to # 2, the sub-band number is the band from # 3 to # 6, and the sub-band number is the band from # 7 to # 9. In each of the above, a portion other than the Long PUCCH can be used as a continuous band that can be allocated to the transmission of the PUSCH.
[0137]
　As described above, the terminal group A and the terminal group B have different active subbands, but by using the physical uplink control channel region located in the common subband, all the Long PUCCHs are set to the common subband. It can be allocated centrally near the boundary of the band. This makes it possible to efficiently multiplex the Long PUCCH and suppress fragmentation of radio resources.
[0138]

　-Example 　of placement of the physical uplink control channel area in the sub band or the candidate band The terminal device is the sub band or the candidate band in which the physical uplink control channel area for transmitting HARQ-ACK information is located. It is necessary to specify the relative resource number for the Long PUCCH resource in the band or in the candidate band. With this relative resource number, the relative RB number in the sub band or the candidate band and the resource number in the RB may be specified. The resource number in the RB may specify a cyclic shift number and / or an orthogonal cover code number applied to the Long PUCCH.
[0139]
　When frequency hopping is performed, this relative resource number is the relative position within the subband or candidate band of the physical uplink control channel region before frequency hopping, or the physical uplink after frequency hopping. It may specify at least one of the relative positions in the sub-band or the candidate band of the control channel region.
[0140]
　FIG. 14 is a diagram for explaining a specific example of a relative resource number for a Long PUCCH resource in a sub-band or a candidate band.
[0141]
　This relative resource number may be implicitly determined based on the information about the resource to which the PDSCH corresponding to the HARQ-ACK information was transmitted. Examples of this information include the first OFDM symbol number or RB number scheduled for PDSCH, the final OFDM symbol number or RB number, or a combination thereof.
[0142]
　Also, the relative resource number may be implicitly determined based on the information about the resource of the PDCCH to which the DCI for scheduling the PDSCH has been transmitted. Examples of this information include the first OFDM symbol number or RB number to which the PDCCH was transmitted, the final OFDM symbol number or RB number, the first or last index of the REG (Resource Element Group), and the CCE (Control Channel Element). The leading or final index of, or any combination of these.
[0143]
　Further, the relative resource number may be directly specified by MAC CE and / or DCI.
[0144]
　In addition, some of the relative resource numbers may be specified directly in MAC CE and / or DCI, and the rest may be determined by the implicit method described above.
[0145]
　The on / off of frequency hopping at the time of Long PUCCH transmission may be quasi-statically specified for each terminal, each partial band set in the terminal, or each candidate band. Alternatively, the DCI may be dynamically specified by including a flag indicating on / off of frequency hopping.
[0146]
　<< 5. Second Embodiment >>
　Subsequently, a second embodiment of the present invention will be described with reference to FIGS. 15 and 16. The first embodiment described above is a specific embodiment, while the second embodiment is a more generalized embodiment.
[0147]
　<5.1. Base Station Configuration>
　An example of the configuration of the base station 100 according to the second embodiment will be described with reference to FIG. FIG. 15 is a block diagram showing an example of a schematic configuration of the base station 100 according to the second embodiment. Referring to FIG. 15, the base station 100 includes a communication processing unit 150. The specific operation of the communication processing unit 150 will be described later.
[0148]
　The communication processing unit 150 may be implemented by one or more processors (BB processor and / or other type of processor, etc.) and memory. The memory may be contained within the one or more processors, or may be outside the one or more processors.
[0149]
　The base station 100 may include a memory for storing a program (instruction) and one or more processors capable of executing the program (instruction). The one or more processors may execute the above program to operate the communication processing unit 150. The above program may be a program for causing the processor to execute the operation of the communication processing unit 150.
[0150]
　The base station 100 may be virtualized. That is, the base station 100 may be implemented as a virtual machine. In this case, the base station 100 (virtual machine) may operate as a virtual machine on a physical machine (hardware) including a processor, a memory, and the like, and a hypervisor.
[0151]
　As a matter of course, the base station 100 may further include components other than the communication processing unit 150. For example, the base station 100 may further include a wireless communication unit 110, a network communication unit 120 and / or a storage unit 130, and / or further include other components, as in the first embodiment. May be good.
[0152]
　<5.2. Configuration of Terminal Device>
　An example of the configuration of the terminal device 200 according to the second embodiment will be described with reference to FIG. FIG. 16 is a block diagram showing an example of a schematic configuration of the terminal device 200 according to the second embodiment. Referring to FIG. 16, the terminal device 200 includes a communication processing unit 240. The specific operation of the communication processing unit 240 will be described later.
[0153]
　The communication processing unit 240 may be implemented by one or more processors (BB processor and / or other type of processor, etc.) and memory. The memory may be contained within the one or more processors, or may be outside the one or more processors. As an example, the communication processing unit 240 may be implemented in the SoC.
[0154]
　The terminal device 200 may include a memory for storing a program (instruction) and one or more processors capable of executing the program (instruction). The one or more processors may execute the above program to operate the communication processing unit 240. The above program may be a program for causing the processor to execute the operation of the communication processing unit 240.
[0155]
　As a matter of course, the terminal device 200 may further include components other than the communication processing unit 240. For example, the terminal device 200 may further include a wireless communication unit 210 and / or a storage unit 220, and / or may further include other components, as in the first embodiment.
[0156]
　<5.3. Technical Features>
　The technical features of the second embodiment will be described.
[0157]
　The base station 100 (communication processing unit 150) communicates with the first terminal device (terminal device 200) within the partial band used by the first terminal device (terminal device 200A) in the uplink system band. The first terminal device (communication processing unit 240 of the terminal device 200) communicates with the base station 100 within the partial band. The partial band includes a physical uplink control channel region used by the first terminal device (terminal device 200).
[0158]
　As a result, for example, even if the partial band differs depending on the terminal device, the first terminal device can transmit the physical uplink control channel to the base station without retuning. More specifically, even if the maximum transmission bandwidth of the first terminal device is small, the first terminal device can transmit the physical uplink control channel to the base station without retuning.
[0159]
　As an example, the description of the partial band, the physical uplink control channel region, and / or the control information is the same as the description in the first embodiment. Therefore, duplicate description will be omitted here. In this case, the communication processing unit 150 may operate in the same manner as the communication processing unit 141 of the first embodiment, and the communication processing unit 240 may operate in the same manner as the communication processing unit 231 of the first embodiment. May work.
[0160]
　Of course, the second embodiment is not limited to this example.
[0161]
　<< 6. Other Embodiments >> Although the embodiments of
　the present invention have been described above, the present invention is not limited to these embodiments. It will be appreciated by those skilled in the art that these embodiments are merely exemplary and that various modifications are possible without departing from the scope and spirit of the invention.
[0162]
　For example, one or more of devices (eg, a plurality of devices (or units) constituting a base station) including the components of the base station described in the present specification (for example, a communication processing unit and / or an information acquisition unit). Device (or unit), or module for one of the plurality of devices (or units) described above) may be provided. A device (eg, a module for a terminal device) comprising the components of the terminal device described herein (eg, a communication processing unit) may be provided. Further, a method including the processing of the above components may be provided, and a program for causing the processor to execute the processing of the above components may be provided. Further, a non-transitory computer readable medium may be provided which can be read by the computer on which the program is recorded. Of course, such devices, modules, methods, programs, and computer-readable non-temporary recording media are also included in the invention.
[0163]
　Some or all of the above embodiments may also be described, but not limited to:
[0164]
(Appendix 1)
　A communication processing unit that communicates with the first terminal device within a partial band used by the first terminal device in the uplink system band is provided, and the
　partial band is the first terminal device. A base station that includes a physical uplink control channel area used by.
[0165]
　(Supplementary Note 2) The
　partial band includes a plurality of physical uplink control channel regions used by the first terminal device, and the
　plurality of physical uplink control channel regions are separated from each other in the frequency direction. The listed base station.
[0166]
　(Supplementary Note 3) 　The base station according to Supplementary note 1 or 2
　,
wherein the uplink system band includes a plurality of subbands, and the partial band includes one or more of the plurality of subbands.
[0167]
　(Supplementary note 4)
　The base station according to Supplementary note 3, wherein each of the plurality of subbands includes a plurality of resource blocks continuous in the frequency direction.
[0168]
　(Supplementary note 5)
　The base station according to Supplementary note 3 or 4, wherein the partial band is one or more of the plurality of subbands.
[0169]
　(Supplementary note 6)
　The base station according to any one of Supplementary note 3 to 5, wherein the physical uplink control channel region is located in a sub-band included in the partial band.
[0170]
　(Appendix 7) The
　partial band includes two or more sub-bands among the plurality of sub-bands, and the
　physical uplink control channel region includes the two or more sub-bands included in the partial band. The base station according to Appendix 6, which is located in one subband of the above.
[0171]
　(Supplementary Note 8)
　The base station according to Supplementary note 7, wherein the physical uplink control channel region is located in a sub-band at an end of the two or more sub-bands.
[0172]
　(Appendix 9) The
　partial band includes a plurality of physical uplink control channel regions used by the first terminal device, and the
　plurality of physical uplink control channel regions include a first physical uplink control channel region. The first physical uplink control channel region includes the first physical uplink control channel region and the second physical uplink control channel region separated in the frequency direction, and
　the first physical uplink control channel region is included in the partial band. Located within one of the two or more subbands,
　the second physical uplink control channel region is the first of the two or more subbands included in the subband. The base station according to Appendix 7 or 8, which is located in one sub-band different from the sub-band in which the physical uplink control channel region is located.
[0173]
　(Appendix 10) The
　physical uplink control channel region is located in
　one candidate band of two or more candidate bands in the partial band, and each of the two or more candidate bands is the portion. The base station according to Appendix 7, which is one sub-band within the band or two or more sub-bands continuous in the frequency direction within the partial band.
[0174]
　(Supplementary Note 11)
　The base station according to any one of Supplementary note 7 to 10, wherein the physical uplink control channel region is located at a predetermined position in the subband.
[0175]
　(Appendix 12)
　The base station according to Appendix 11, wherein the predetermined location is a location at the end of the subband.
[0176]
　(Appendix 13)
　The base station according to Appendix 11, wherein the predetermined location is a location separated from the end of the sub-band by a predetermined interval.
[0177]
　(Appendix 14)
　The partial band used by the first terminal device includes one or more of the subbands included in the partial band used by the second terminal device different from the first terminal device. , The base station according to any one of Supplementary Provisions 5 to 13.
[0178]
　(Supplementary Note 15) The
　description of any one of Supplementary note 1 to 14, wherein the communication processing unit transmits the first control information for specifying the physical uplink control channel region to the first terminal device. Base station.
[0179]
　(Appendix 16) The
　uplink system band includes a plurality of sub-bands, the sub-band includes
　one or more of the plurality of sub-bands, and the
　physical uplink control channel region is included in the sub-bands.
　The base station according to Appendix 15, which is located within the included sub-band, and the first control information is control information for specifying the sub-band in which the physical uplink control channel region is located.
[0180]
　(Appendix 17) The
　partial band includes two or more of the plurality of subbands, and the
　physical uplink control channel region is a candidate for one of two or more candidate bands within the partial band.
　Each of the two or more candidate bands located in the band is one sub-band within the sub-band, or two or more sub-bands continuous in the frequency direction within the sub-band, and the
　first The control information of 1 is the control information for identifying the candidate band in which the physical uplink control channel region is located, and the
　communication processing unit is the second control for specifying the two or more candidate bands. 16. The base station according to Appendix 16, which transmits information to the first terminal device.
[0181]
　(Supplementary Note 18)
　The base station according to Supplementary note 17, wherein the communication processing unit transmits a MAC (Media Access Control) control element including the second control information to the first terminal device.
[0182]
　(Supplementary note 19)
　The base station according to Supplementary note 17, wherein the communication processing unit transmits an RRC (Radio Resource Control) message including the second control information to the first terminal device.
[0183]
　(Supplementary note 20)
　The first control information is an index for identifying a candidate band in which the physical uplink control channel region is located from among a plurality of candidate bands in the uplink system band. The base station according to any one of 19 to 19.
[0184]
　(Supplementary note 21)
　The first control information is an index for identifying a candidate band in which the physical uplink control channel region is located from among the two or more candidate bands in the partial band. The base station according to any one of 17 to 19.
[0185]
　(Supplementary Note 22)
　The base station according to Supplementary note 20 or 21, wherein the communication processing unit transmits DCI (Downlink Control Information) including the index to the first terminal device.
[0186]
　(Supplementary note 23)
　The base station according to Supplementary note 20 or 21, wherein the communication processing unit transmits a MAC (Media Access Control) control element including the index to the first terminal device.
[0187]
　(Appendix 24)
　The first terminal device
　includes a communication processing unit that communicates with a base station within the partial band used by the first terminal device in the uplink system band, and the
　partial band is provided . A first terminal device comprising a physical uplink control channel region used by the first terminal device.
[0188]
　(Appendix 25)
　A method including communicating with the first terminal device within a partial band used by the first terminal device in the uplink system band,
　wherein the partial band is the first terminal. A method comprising a physical uplink control channel area used by the device.
[0189]
　(Appendix 26)
　A method including communicating with a base station within a partial band used by the first terminal device in the uplink system band, the partial band being used by
　the first terminal device. A method that includes a physical uplink control channel area.
[0190]
　(Appendix 27)
　A program that causes a processor to perform communication with the first terminal device within a partial band used by the first terminal device in the uplink system band, and the partial band is the first terminal device
　. A program comprising a physical uplink control channel region used by one terminal device.
[0191]
　(Appendix 28)
　A program that causes a processor to execute communication with a base station within a partial band used by the first terminal device in the uplink system band, and the
　partial band is the first terminal device. A program that includes the physical uplink control channel area used by.
[0192]
　(Appendix 29)
　A non-temporary computer that records a program that causes a processor to execute communication with the first terminal device within a partial band used by the first terminal device in the uplink system band. A
　non-temporary recording medium , wherein the partial band includes a physical uplink control channel region used by the first terminal device.
[0193]
　(Appendix 30)
　A non-temporary recording medium that can be read by a computer that records a program that causes a processor to execute communication with a base station within a partial band used by the first terminal device in the uplink system band. The
　partial band is a non-temporary recording medium including a physical uplink control channel region used by the first terminal device.
[0194]
　(Appendix 31)
　A base station having a communication processing unit that communicates with the first terminal device in the partial band used by the first terminal device in the uplink system band, and the base station in the
　partial band. A system comprising a first terminal device having a communication processing unit for communication,
　wherein the partial band includes a physical uplink control channel region used by the first terminal device.
[0195]
　This application claims priority on the basis of Japanese application Japanese Patent Application No. 2017-149247 filed on August 1, 2017 and incorporates all of its disclosures herein.
Industrial applicability
[0196]
　In a mobile communication system, regardless of the partial band used by the first terminal device, the first terminal device can transmit the physical uplink control channel to the base station without retuning.
Description of the sign
[0197]
　1 System
　100 Base station
　200 Terminal device
　141, 150, 231, 240 Communication processing unit
　143 Information acquisition unit

The scope of the claims
[Request item 1]
　The first terminal device comprises a communication processing unit that communicates with the first terminal device in an active uplink Bandwidth part used by the first terminal device in the uplink system band, and
　the first terminal device is a physical uplink control channel. A base station that transmits to the first terminal device first control information that identifies the resources of the physical uplink control channel relative to the active uplink Bandwidth part for use in the transmission of.
[Request item 2]
　The first control information is the index corresponding to the resource in a table including a set of resources of a plurality of relative physical uplink control channels in the active uplink Bandwidth part, according to claim 1. base station.
[Request item 3]
　The base station according to claim 1 or 2, wherein the resource is specified by a PRB (Physical Resource Block) offset.
[Request 4]
　The base station according to claim 2, wherein the set of resources includes discontinuous integer values.
[Request 5]
　The first control information is an index corresponding to the PRB offset in a table containing a set of PRB (Physical Resource Block) offsets of a plurality of relative physical uplink control channels in the active uplink Bandwidth part.
　The base station according to claim 1 , wherein the set of PRB offsets includes discontinuous integer values.
[Request 6]
　For the first terminal device to determine a PRB index relative to the resource identified by the first control information for use by the first terminal device for transmission of the physical uplink control channel. The base station according to any one of claims 1 to 5, which transmits the second control information.
[Request 7]
　The PRB index is determined by the first terminal device based on the second control information and information regarding the CCE (Control Channel Element) of the PDCCH (Physical Downlink Control Channel) received by the first terminal device. The base station according to claim 6.
[Request 8]
　The base station according to any one of claims 1 to 7, wherein the first control information is transmitted by an RRC (Radio Resource Connection) message.
[Request 9]
　The base station according to claim 6 or 7, wherein the second control information is transmitted by DCI (Downlink Control Information).
[Request item 10]

　The base station according to claim 6 or 7, 　wherein the first control information is transmitted by an RRC (Radio Resource Configuration) message, and the second control information is transmitted by a DCI (Downlink Control Information).
[Request 11]
　A communication processing unit that communicates with a base station on the active uplink Bandwidth part of the uplink system band, and
　is relative within the active uplink Bandwidth part for use in transmitting a physical uplink control channel. A terminal device that receives first control information that identifies a resource of the physical uplink control channel from the base station.
[Request 12]
　11. The first control information is an index corresponding to the resource in a table containing a set of resources of a plurality of relative physical uplink control channels in the active uplink Bandwidth part, according to claim 11. Terminal device.
[Request 13]
　The terminal device according to claim 11 or 12, wherein the resource is specified by a PRB (Physical Resource Block) offset.
[Request 14]
　12. The terminal device according to claim 12, wherein the set of resources includes discontinuous integer values.
[Request 15]
　The first control information is an index corresponding to the PRB offset in a table containing a set of PRB (Physical Resource Block) offsets of a plurality of relative physical uplink control channels in the active uplink Bandwidth part.
The terminal device according to claim 11 , wherein the set of PRB offsets includes discontinuous integer values.
[Request item 16]
　A second control information for the terminal device to determine a PRB index relative to the resource identified by the first control information for use by the terminal device for transmission of the physical uplink control channel. The terminal device according to any one of claims 11 to 15, which is received from the base station.
[Request item 17]
　The terminal device according to claim 16, wherein the PRB index is determined based on the second control information and information regarding a CCE (Control Channel Element) of a PDCCH (Physical Downlink Control Channel) received by the terminal device.
[Request 18]
　The terminal device according to any one of claims 11 to 17, wherein the first control information is received by an RRC (Radio Resource Connection) message.
[Request 19]
　The terminal device according to claim 16 or 17, wherein the second control information is received by DCI (Downlink Control Information).
[Request item 20]

　The terminal device according to claim 16 or 17, 　wherein the first control information is received by an RRC (Radio Resource Configuration) message, and the second control information is received by a DCI (Downlink Control Information).
[Request item 21]
　A communication processing unit that communicates with the first terminal device within a partial band used by the first terminal device in the uplink system band is provided, and the
　partial band is the physical used by the first terminal device. A base station that includes an uplink control channel area.
[Request 22]

　21. The base according to claim 21 　, wherein the partial band includes a plurality of physical uplink control channel regions used by the first terminal device, and the plurality of physical uplink control channel regions are separated from each other in the frequency direction. Station.
[Request 23]

　The base station according to claim 21 or 22, 　wherein the uplink system band includes a plurality of sub-bands, and the sub-band includes one or more of the plurality of sub-bands.
[Request item 24]
　23. The base station according to claim 23, wherein each of the plurality of subbands includes a plurality of resource blocks continuous in the frequency direction.
[Request item 25]
　The base station according to claim 23 or 24, wherein the partial band is one or more of the plurality of sub-bands.
[Request 26]
　The base station according to any one of claims 23 to 25, wherein the physical uplink control channel region is located in a sub-band included in the partial band.
[Request 27]
　The subband includes two or more subbands of the plurality of subbands, and the
　physical uplink control channel region is one sub of the two or more subbands included in the subband. The base station according to claim 26, which is located in the band.
[Request 28]
　27. The base station of claim 27, wherein the physical uplink control channel region is located within a subband at the end of the two or more subbands.
[Request item 29]
　The partial band includes a plurality of physical uplink control channel regions used by the first terminal device, and the
　plurality of physical uplink control channel regions include a first physical uplink control channel region and the first physical uplink control channel region. The first physical uplink control channel region includes the physical uplink control channel region and the second physical uplink control channel region separated in the frequency direction, and
　the first physical uplink control channel region includes the two or more physical uplink control channel regions included in the partial band. Located within one subband of the subbands,
　the second physical uplink control channel region is the first physical uplink control of the two or more subbands included in the subband. 28. The base station according to claim 27 or 28, which is located in one subband different from the subband in which the channel region is located.
[Request item 30]
　The physical uplink control channel region is located in one of the
　two or more candidate bands in the subband, and each of the two or more candidate bands is in the subband. 27. The base station according to claim 27, which is one sub-band or two or more sub-bands continuous in the frequency direction within the sub-band.
[Request 31]
　The base station according to any one of claims 27 to 30, wherein the physical uplink control channel region is located at a predetermined location in the subband.
[Request item 32]
　31. The base station according to claim 31, wherein the predetermined location is a location at the end of the subband.
[Request 33]
　The base station according to claim 31, wherein the predetermined location is a location separated from the end of the sub-band by a predetermined interval.
[Request 34]
　25. The partial band used by the first terminal device includes one or more of subbands included in the partial band used by the second terminal device different from the first terminal device. The base station according to any one of 33 to 33.
[Request 35]
　The base station according to any one of claims 21 to 34, wherein the communication processing unit transmits the first control information for specifying the physical uplink control channel region to the first terminal device. ..
[Request 36]
　The uplink system band includes a plurality of sub-bands, the sub-band includes
　one or more of the plurality of sub-bands, and the
　physical uplink control channel region is a sub-band included in the sub-bands.
　35. The base station according to claim 35 , wherein the first control information is control information for specifying a subband in which the physical uplink control channel region is located.
[Request 37]
　The subband includes two or more of the plurality of subbands, and the
　physical uplink control channel region is located within one of the two or more candidate bands within the subband. and,
　wherein each of the two or more candidate bands, one sub-band in said portion in-band, or two or more sub-band continuous in a frequency direction in said partial band,
　the first control information Is the control information for identifying the candidate band in which the physical uplink control channel region is located, and the
　communication processing unit provides the second control information for specifying the two or more candidate bands. 36. The base station according to claim 36, which is transmitted to the first terminal device.
[Request 38]
　37. The base station according to claim 37, wherein the communication processing unit transmits a MAC (Media Access Control) control element including the second control information to the first terminal device.
[Request item 39]
　37. The base station according to claim 37, wherein the communication processing unit transmits an RRC (Radio Resource Control) message including the second control information to the first terminal device.
[Request item 40]
　The first control information is an index for identifying a candidate band in which the physical uplink control channel region is located from among a plurality of candidate bands in the uplink system band, according to claims 37 to 39. The base station described in any one of them.
[Request 41]
　The first control information is an index for identifying a candidate band in which the physical uplink control channel region is located from among the two or more candidate bands in the partial band, claim 37 to 39. The base station described in any one of the above.
[Request item 42]
　The base station according to claim 40 or 41, wherein the communication processing unit transmits DCI (Downlink Control Information) including the index to the first terminal device.
[Request item 43]
　The base station according to claim 40 or 41, wherein the communication processing unit transmits a MAC (Media Access Control) control element including the index to the first terminal device.
[Request item 44]
　The first terminal device
　includes a communication processing unit that communicates with a base station within a partial band of the uplink system band used by the first terminal device, and the partial band is the first terminal device
　. A first terminal device that includes a physical uplink control channel area used by the terminal device.
[Request item 45]
　A method comprising communicating with the first terminal device within a partial band used by the first terminal device in the uplink system band, the partial band being used by
　the first terminal device. A method that includes a physical uplink control channel area.
[Request 46]
　A method including communicating with a base station within a partial band used by the first terminal device of the uplink system band,
　wherein the partial band is a physical uplink control used by the first terminal device. A method that includes a channel area.
[Request 47]
　A program that causes a processor to execute communication with the first terminal device within a partial band used by the first terminal device in the uplink system band, and the
　partial band is the first terminal device. A program that includes the physical uplink control channel area used by.
[Request item 48]
　It is a program that causes a processor to communicate with a base station within a partial band used by the first terminal device in the uplink system band, and the
　partial band is the physical used by the first terminal device. A program that contains an uplink control channel area.
[Request item 49]
　A non-temporary recording medium readable by a computer recording a program that causes a processor to communicate with the first terminal device within a partial band used by the first terminal device in the uplink system band. The
　partial band is a non-temporary recording medium including a physical uplink control channel region used by the first terminal device.
[Request item 50]
　A first non-transitory recording medium readable recording a computer program to communicate with the sub-bands in a base station, to execute the processor used by the terminal device among the uplink system band,
　said portion The band is a non-temporary recording medium including a physical uplink control channel region used by the first terminal device.
[Request Item 51]
　A base station having a communication processing unit that communicates with the first terminal device in the partial band used by the first terminal device in the uplink system band, and a communication process that communicates with the base station in the
　partial band. A system comprising a first terminal device having a unit,
　wherein the partial band includes a physical uplink control channel region used by the first terminal device.