Terminal, base station, and communication method

Abstract

This terminal includes: a control unit that assumes that a retransmission control process is managed for each discontinuous frequency resource in discontinuous frequency resources consisting of a plurality of continuous frequency resources, and assumes that the number of the retransmission control process is defined in the discontinuous frequency resources or that a number associated with the continuous frequency resources in the discontinuous frequency resources is defined in the discontinuous frequency resources; and a transmission unit whereby a terminal capability including the maximum number of the retransmission control processes in the discontinuous frequency resources is transmitted to a base station.

Description

Terminal, base station, and communication method

[0001] The present invention relates to a terminal, a base station, and a communication method in a wireless communication system.

[0002] The 3GPP (registered trademark) (3rd Generation Partnership Project) is currently studying a wireless communication method called 5G or NR (New Radio) (hereinafter, this wireless communication method will be referred to as "NR") in order to achieve a larger system capacity, a higher data transmission speed, and a lower latency in wireless sections. In 5G, various wireless technologies and network architectures are being studied to meet the requirements of achieving a throughput of 10 Gbps or more while reducing the latency in wireless sections to 1 ms or less (for example, Non-Patent Document 1 and Non-Patent Document 2).

[0003] In NR, the carrier aggregation (CA) function that uses a wideband to secure data resources continues to be supported in LTE. The carrier aggregation function aggregates multiple component carriers (CCs) to secure wideband data resources.

[0004] 3GPP TS 38.300 V17.5.0 (2023-06)3GPP TS 38.401 V17.5.0 (2023-06)

[0005] In order to perform more flexible and efficient resource allocation in the carrier aggregation function, a method for efficiently configuring non-contiguous frequency resources by aggregating consecutive frequency resources has been studied. However, the process related to transport blocks when configuring non-contiguous frequency resources by aggregating consecutive frequency resources has not been specified. For example, the process related to transport block generation and mapping for physical channels spanning multiple consecutive frequency resources in non-contiguous frequency resources has not been specified.

[0006] The present invention has been made in view of the above points, and has as its object to transmit and receive data using non-contiguous frequency resources in the frequency domain in wireless communication.

[0007] According to the disclosed technology, there is provided a terminal having: a control unit that assumes that, in non-contiguous frequency resources constituted by a plurality of contiguous frequency resources, a retransmission control process is managed for each of the non-contiguous frequency resources, and that a number of the retransmission control process is defined in the non-contiguous frequency resources, or a number associated with the contiguous frequency resources is defined in the non-contiguous frequency resources; and a transmission unit that transmits terminal capabilities including the maximum number of retransmission control processes in the non-contiguous frequency resources to a base station.

[0008] According to the disclosed technology, in wireless communication, data can be transmitted and received using non-contiguous frequency resources in the frequency domain.

[0009] FIG. 1 is a diagram illustrating an example of the configuration of a wireless communication system according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an example (1) of the configuration of a virtual CC according to an embodiment of the present invention. FIG. 3 is a diagram illustrating an example (2) of the configuration of a virtual CC according to an embodiment of the present invention. FIG. 4 is a diagram illustrating an example (1) of transport block mapping according to an embodiment of the present invention. FIG. 5 is a diagram illustrating an example of transport block mapping method 1 according to an embodiment of the present invention. FIG. 6 is a diagram illustrating an example of transport block mapping method 2 according to an embodiment of the present invention. FIG. 7 is a diagram illustrating an example of transport block mapping method 3 according to an embodiment of the present invention. FIG. 8 is a diagram illustrating an example (2) of transport block mapping according to an embodiment of the present invention. FIG. 9 is a diagram illustrating an example of virtual CC grouping according to an embodiment of the present invention. FIG. 10 is a diagram illustrating an example of the functional configuration of a base station 10 according to an embodiment of the present invention. FIG. 11 is a diagram illustrating an example of the functional configuration of a terminal 20 according to an embodiment of the present invention. FIG. 12 is a diagram illustrating an example of the hardware configuration of a base station 10 or a terminal 20 according to an embodiment of the present invention. FIG. 13 is a diagram illustrating an example of the configuration of a vehicle 2001 according to an embodiment of the present invention.

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0011] In the operation of the wireless communication system according to the embodiment of the present invention, existing technology is used as appropriate. However, the existing technology is, for example, the existing LTE, but is not limited to the existing LTE. Furthermore, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and systems subsequent to LTE-Advanced (e.g., NR), unless otherwise specified.

[0012] In addition, in the embodiments of the present invention described below, terms such as SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel) used in existing LTE are used. This is for convenience of description, and similar signals, functions, etc. may be called by other names. In addition, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even if a signal is used in NR, it is not necessarily stated as "NR-".

[0013] Furthermore, in the embodiment of the present invention, the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or other methods (for example, Flexible Duplex, etc.).

[0014] Furthermore, in the embodiments of the present invention, "configuring" radio parameters etc. may mean that predetermined values ​​are pre-configured, or that radio parameters notified from the base station 10 or the terminal 20 are set.

[0015] Fig. 1 is a diagram showing an example of the configuration of a wireless communication system according to an embodiment of the present invention. As shown in Fig. 1, the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0016] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a wireless signal are defined in the time domain and the frequency domain. The time domain may be defined by the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. The base station 10 transmits a synchronization signal and system information to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is, for example, transmitted via NR-PBCH and is also referred to as broadcast information. The synchronization signal and system information may also be referred to as SSB (SS / PBCH block). As shown in FIG. 1 , the base station 10 transmits control signals or data to the terminal 20 via DL (Downlink) and receives control signals or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. Furthermore, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Furthermore, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).

[0017] The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or an M2M (Machine-to-Machine) communication module. As shown in Fig. 1, the terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10 and measures propagation path quality based on the reception results of the reference signals.

[0018] In addition, LTE and NR support a carrier aggregation function that uses a wideband to secure data resources. The carrier aggregation function can secure wideband data resources by aggregating multiple component carriers. For example, a 100 MHz bandwidth can be used by aggregating multiple 20 MHz bandwidths.

[0019] Conventional carrier aggregation functions require scheduling of data resources for each of a plurality of aggregated component carriers, resulting in a problem of large overhead in resource allocation.

[0020] Therefore, a method of allocating resources in a scheduling unit with a granularity different from that of component carriers, and a terminal that allocates resources in a scheduling unit with a granularity different from that of component carriers will be described.

[0021] A framework for performing scheduling or aggregation at a granularity different from that of a component carrier is defined as frequency fragmentation. Note that "component carrier" may refer to a set of frequency resources corresponding to a conventional scheduling unit (i.e., an actual CC, which will be described later), and a set of frequency resources in frequency fragmentation (i.e., a virtual CC, which will be described later) may also be called a "component carrier."

[0022] In addition, in carrier aggregation, aggregation at a granularity different from that of component carriers is defined as non-contiguous carrier aggregation.

[0023] In addition, in carrier aggregation (discontinuous carrier aggregation), scheduling at a granularity different from that of component carriers is defined as discontinuous scheduling.

[0024] The granularity different from the component carrier may be a virtual CC (virtual CC) unit, a BWP (Bandwidth Part) unit, a PRB (Physical Resource Block) unit, or a PRB set unit. A virtual CC is a carrier set that aggregates all or part of the frequency resources included in each of multiple component carriers. For example, a virtual CC may be assumed to be composed of multiple BWPs.

[0025] 2 is a first diagram showing an example of a configuration of a virtual CC according to an embodiment of the present invention. Virtual CC #i shown in Fig. 2 is a carrier set that aggregates BWP #a and BWP #b included in each of multiple component carriers (CC #0 and CC #1).

[0026] A virtual CC may also be assumed to consist of multiple PRBs or sets of PRBs.

[0027] 3 is a second diagram showing an example of a configuration of a virtual CC according to an embodiment of the present invention. Virtual CC #i shown in FIG. 3 is a carrier set that aggregates multiple PRBs included in each of multiple component carriers (CC #0 and CC #1). The multiple PRBs or PRB sets may be included in one or multiple BWPs.

[0028] Hereinafter, a CC before aggregation is referred to as an actual CC, and a CC after aggregation is referred to as a virtual CC or a nominal CC. Note that the names are not limited to these. In addition, an actual CC may be any unit of a certain frequency resource and may not be defined and configured as a CC. A virtual CC may be defined and configured as a CC.

[0029] Furthermore, the virtual CC may be used in the same manner as a conventional single CC in, for example, channel mapping, scheduling, retransmission control (HARQ, Hybrid Automatic Repeat request), configuration, and the like.

[0030] In addition, the actual CC may be interpreted as a continuous frequency resource, and the virtual CC may be interpreted as a discontinuous frequency resource.

[0031] The terminal 20 may transmit terminal capability information indicating the configuration of a virtual CC to the base station 10. The terminal capability information indicating the configuration of a virtual CC may be, for example, information indicating that the virtual CC is configured from a plurality of BWPs, or information indicating that the virtual CC is configured from a plurality of PRBs.

[0032] Furthermore, the terminal capability information indicating the configuration of a virtual CC may be information indicating that a virtual CC consisting of a plurality of BWPs and a virtual CC consisting of a plurality of PRBs are supported.

[0033] The terminal 20 may transmit terminal capability information indicating the configuration of a virtual CC to the base station 10. The terminal capability information indicating the configuration of a virtual CC may be, for example, information indicating that the virtual CC is configured from a plurality of BWPs, or information indicating that the virtual CC is configured from a plurality of PRBs.

[0034] Furthermore, the terminal capability information indicating the configuration of a virtual CC may be information indicating that a virtual CC consisting of a plurality of BWPs and a virtual CC consisting of a plurality of PRBs are supported.

[0035] Furthermore, the terminal 20 may assume that an index for identifying each virtual CC is set in RRC by the base station 10. Furthermore, the terminal 20 may assume that the index for identifying each virtual CC is the minimum value (e.g., i=0 in FIG. 2 or FIG. 3) or the maximum value (e.g., i=1 in FIG. 2 or FIG. 3) of the index of the component carrier.

[0036] The terminal 20 may assume that the scheduling unit in non-continuous scheduling is notified by (i) a virtual CC index, (ii) an index of multiple component carriers plus an index of multiple BWPs, (iii) an index of multiple component carriers plus an index of multiple PRBs or PRB sets, (iv) an index of multiple component carriers plus an index of multiple BWPs plus an index of multiple PRBs or PRB sets, etc.

[0037] Furthermore, the terminal 20 may assume that the resource unit of carrier aggregation is a virtual CC, a BWP, a PRB, or a PRB set.

[0038] According to the above-described operation, it is possible to realize resource allocation in scheduling units with different granularity from that of component carriers.

[0039] (Embodiment) In this embodiment, a process related to a transport block and a process related to retransmission control when non-contiguous frequency resources are used in the frequency domain in wireless communication will be described.

[0040] In this embodiment, when a terminal 20 configures a virtual CC from one or more actual CCs, it receives a PDSCH or transmits a PUSCH in which a transport block (TB) is generated and mapped for a downlink data channel (PDSCH) or an uplink data channel (PUSCH) spanning multiple actual CCs. Here, a PDSCH spanning multiple actual CCs means that the frequency resources used for the PDSCH are included in some or all of the multiple actual CCs. Furthermore, the operations for receiving the PDSCH and transmitting the PUSCH may be different.

[0041] In addition, TB may be replaced with a code block (CB) or a code block group (CBG), and transmission, retransmission, and transmission of feedback information (HARQ feedback) in CB or CBG units may be performed within a virtual CC.

[0042] (Example 1) In Example 1, a TB is generated and mapped for each actual CC.

[0043] (Example 1a) TBS Determination The base station 10 and the terminal 20 may determine a TB size (Transport Block Size, TBS) based on available resource elements (RE) in each actual CC, a transmitted demodulation reference signal (DMRS), and overhead. Here, the overhead may be, for example, a channel state information reference signal (CSI-RS), a phase tracking reference signal (PT-RS), or the like, and may be determined based on RRC parameters.

[0044] Furthermore, the base station 10 and the terminal 20 may apply a common modulation and coding scheme (MCS) to all actual CCs, or may apply a different MCS to each actual CC.

[0045] (Example 1b) Mapping The base station 10 and the terminal 20 map the TBs generated for each actual CC to each actual CC.

[0046] The mapping order may be an order in which mapping is performed in the frequency direction and then in the time direction, or an order in which mapping is performed in the time direction and then in the frequency direction.

[0047] 4 is a diagram showing an example (1) of transport block mapping according to an embodiment of the present invention. In FIG. 4, a virtual CC is composed of actual CCs #0, #1, and #2, and in a PDSCH spanning actual CCs #0 and #1, TB #0 is generated and mapped for actual CC #0, and TB #1 is generated and mapped for actual CC #1. The mapping order is frequency direction followed by time direction.

[0048] (Example 1c) HARQ process management In a virtual CC, the retransmission control process (HARQ process) may be defined and managed in each actual CC, or may be defined and managed across (across) the actual CCs.

[0049] The retransmission control process number (HARQ process number) of the TB in each actual CC may be a common value for all actual CCs. In this case, the base station 10 includes this common value in downlink control information (DCI) and notifies the terminal 20. Alternatively, the retransmission control process number of the TB in each actual CC may be a different value for each actual CC. In this case, for example, the base station 10 includes the retransmission control process number for each actual CC in DCI and notifies the terminal 20. Notification may be made by RRC or MAC CE instead of DCI.

[0050] The NDI (New Data Indicator) of the TB in each actual CC may be a value common to all actual CCs. In this case, the base station 10 includes this common value in the DCI and notifies the terminal 20. Alternatively, the NDI of the TB in each actual CC may be a different value for each actual CC. In this case, for example, the base station 10 includes the NDI for each actual CC in the DCI and notifies the terminal 20.

[0051] The RV (Redundancy Version) of the TB in each actual CC may be a value common to all actual CCs. In this case, the base station 10 includes this common value in the DCI and notifies the terminal 20. Alternatively, the RV of the TB in each actual CC may be a different value for each actual CC. In this case, for example, the base station 10 includes the RV for each actual CC in the DCI and notifies the terminal 20.

[0052] In a specific actual CC, a TB in another actual CC included in the same virtual CC may be retransmitted. In this case, for example, the base station 10 may include information related to the actual CC to be retransmitted (for example, information on which actual CC the TB transmitted is being retransmitted) in DCI and notify the terminal 20 of the information.

[0053] In a virtual CC, when retransmission control processes are defined and managed across actual CCs, the maximum number of retransmission control processes may be the sum of the maximum number in each actual CC.

[0054] (Embodiment 1d) Feedback In feedback regarding the PDSCH, feedback information (HARQ-ACK) may be generated and reported for each TB in each actual CC.

[0055] Regarding notification information in DCI related to determining the number of bits of HARQ-ACK (e.g., DAI (Downlink Assignment Index)), notification information may be notified for each TB in each actual CC, or notification information including a single value may be notified for TBs in all actual CCs.

[0056] The timing and resources for reporting the feedback information may be the same for all TBs in all actual CCs, or may be different for each TB in each actual CC.

[0057] A single feedback information (HARQ-ACK) may be generated and reported based on the decoding results for each TB in each actual CC. For example, if all decoding is successful, an ACK is reported, and if any decoding is unsuccessful, a NACK is reported.

[0058] When the PUCCH group differs between the actual CCs, the feedback information may be generated and reported for each PUCCH group, or may be generated and reported for a specific PUCCH group. Here, the specific PUCCH group may be, for example, a PUCCH group corresponding to the index of the smallest or largest actual CC in the PDSCH, or a PUCCH group corresponding to the index of the actual CC related to the PDCCH (scheduling-PDCCH) that schedules the PDSCH.

[0059] According to the above-described first embodiment, it is possible to generate and map transport blocks when using discontinuous frequency resources in the frequency domain in wireless communication. In addition, in the first embodiment, the operation related to TB is limited to the actual CC, which makes it possible to avoid the configuration of the terminal 20 from becoming complicated.

[0060] (Embodiment 2) In embodiment 2, TBs are generated and mapped across (across) actual CCs for each PDSCH or PUSCH.

[0061] (Example 2a) TBS Determination The base station 10 and the terminal 20 may determine a TB size (Transport Block Size, TBS) based on available resource elements (RE) in the entire PDSCH or PUSCH, a transmitted demodulation reference signal (DMRS), and overhead. Here, the overhead may be, for example, a channel state information reference signal (CSI-RS), a phase tracking reference signal (PT-RS), or the like, and may be determined based on RRC parameters.

[0062] Furthermore, the base station 10 and the terminal 20 may apply a common modulation and coding scheme (MCS) to the entire PDSCH or PUSCH.

[0063] Alternatively, multiple TBs may be generated for the PDSCH or PUSCH. The generation of multiple TBs may be performed only when certain conditions are met. For example, the generation of multiple TBs may be enabled only if the TBS generated when only one TB is generated exceeds a certain size, and the generation of multiple TBs may be disabled if the TBS does not exceed the certain size.

[0064] (Example 2b) Mapping The base station 10 and the terminal 20 map TBs generated for the entire PDSCH or PUSCH across multiple actual CCs. Note that when multiple TBs are generated, they may be mapped sequentially in the time direction in the PDSCH or PUSCH.

[0065] The mapping order can be determined using the following three methods.

[0066] (Method 1) Within the actual CC, mapping is performed in the order of frequency direction, next actual CC, and time direction.

[0067] (Method 2) Within the actual CC, mapping is performed in the order of frequency direction, time direction, and the next actual CC.

[0068] (Method 3) Mapping is performed in the order of the time direction, the frequency direction within the actual CC, and the next actual CC.

[0069] 5, 6, and 7 are diagrams illustrating examples of Method 1, Method 2, and Method 3, respectively, of transport block mapping according to embodiments of the present invention. In FIG. 5, 6, and 7, a virtual CC is configured with actual CCs #0, #1, and #2, and TB #0 is generated and mapped for a PDSCH spanning actual CC #0 and actual CC #1.

[0070] In FIG. 5, based on Method 1, the mapping operation is repeated in the order of first mapping in the frequency direction within actual CC #0, then mapping in the frequency direction within actual CC #1, and finally mapping in the time direction.

[0071] In FIG. 6, based on method 2, first, mapping is repeatedly performed in the frequency direction and then in the time direction in actual CC #0, and then mapping is repeatedly performed in the frequency direction and then in the time direction in actual CC #1.

[0072] In FIG. 7, based on method 3, first, mapping is repeatedly performed in the time direction and then in the time direction within actual CC #0, and then mapping is repeatedly performed in the time direction and then in the frequency direction within actual CC #1.

[0073] (Example 2c) HARQ process management In a virtual CC, the retransmission control process (HARQ process) may be defined and managed in each actual CC, or may be defined and managed across (across) the actual CCs.

[0074] When a retransmission control process is defined and managed for each actual CC, the retransmission control process for a PDSCH or PUSCH spanning multiple actual CCs may be a retransmission control process for the index of the smallest or largest actual CC of the PDSCH or PUSCH, or may be a retransmission control process for the index of the actual CC related to the PDCCH (scheduling-PDCCH) that schedules the PDSCH or PUSCH, or may be a retransmission control process for the index of the actual CC configured or notified via at least one of RRC, MAC CE, and DCI.

[0075] In a specific actual CC, a TB in another actual CC included in the same virtual CC may be retransmitted. In this case, the base station 10 may include information related to the actual CC to be retransmitted (for example, information on which actual CC the TB transmitted is being retransmitted) in DCI and notify the terminal 20 of the information.

[0076] When multiple TBs are generated and mapped, the base station 10 may notify the terminal 20 of a retransmission control process number (HARQ process number, HPN) for each TB by DCI. Alternatively, the base station 10 may notify the terminal 20 of only the HPN for the first TB (1st TB) by DCI, and apply HPNs obtained by incrementing the notified HPN by one for the second TB (2nd TB) and thereafter.

[0077] When multiple TBs are generated and mapped, the base station 10 may notify the terminal 20 of an NDI (New Data Indicator) for each TB by DCI. Alternatively, the base station 10 may notify the terminal 20 of a common NDI for all TBs.

[0078] When multiple TBs are generated and mapped, the base station 10 may notify the terminal 20 of the RV (Redundancy Version) for each TB by DCI. Alternatively, the base station 10 may notify the terminal 20 of a common RV for all TBs.

[0079] When retransmission control processes are defined and managed across actual CCs, the maximum number of retransmission control processes may be the sum of the maximum number in each actual CC.

[0080] (Embodiment 2d) Feedback In feedback related to PDSCH, feedback information (HARQ-ACK) may be generated and reported for TBs generated for the entire PDSCH or PUSCH.

[0081] If the PUCCH group differs between actual CCs, the feedback information may be generated and reported for each PUCCH group, or may be generated and reported for a specific PUCCH group. Here, the specific PUCCH group may be, for example, a PUCCH group corresponding to the index of the smallest or largest actual CC in a PDSCH, or a PUCCH group corresponding to the index of the actual CC associated with a PDCCH (scheduling-PDCCH) that schedules the PDSCH.

[0082] When multiple TBs are generated and mapped, feedback information (HARQ-ACK) may be generated and reported for each TB. Alternatively, a single feedback information (HARQ-ACK) may be generated and reported based on the decoding result for each TB. For example, if all decoding is successful, an ACK is reported, and if any decoding fails, a NACK is reported.

[0083] According to the above-described second embodiment, it is possible to perform transport block generation and mapping when using discontinuous frequency resources in the frequency domain in wireless communication. Also, in the second embodiment, by treating a virtual CC as the same CC as a conventional CC and performing operations related to TB generation and the like, it is possible to perform operations in accordance with flexible and efficient resource allocation.

[0084] Example 3 In Example 3, a TB is generated for a particular actual CC and is mapped to the remaining actual CCs in a repetition manner.

[0085] Here, the specific actual CC may be an actual CC of a PDSCH or a PUSCH, or an actual CC with the smallest or largest index among the actual CCs included in a virtual CC, or may be an actual CC related to a PDCCH (scheduling-PDCCH) that schedules the PDSCH or PUSCH, or may be an actual CC configured and / or indicated by the base station 10 (BS-configured / indicated).

[0086] (Example 3a) TBS Determination The method described in Example 1a is applied to the specific actual CC in Example 3.

[0087] (Example 3b) Mapping The method described in Example 1b is applied to a specific actual CC in Example 3.

[0088] The mapping for the remaining actual CCs may be repeated by copying the same information as for the particular actual CC.

[0089] 8 is a diagram showing an example (2) of transport block mapping according to an embodiment of the present invention. In FIG. 8, a virtual CC is configured with actual CC #0 and actual CC #1. Here, the resource sizes of actual CC #0 and actual CC #1 are the same. For a PDSCH spanning actual CC #0 and actual CC #1, a TB is first generated in actual CC #0 and mapping is performed (TB #0 Rep. #0). The mapping order is mapping in the frequency direction followed by mapping in the time direction. Next, in actual CC #1, mapping is performed by repeating the TB generated in actual CC #0 (TB #0 Rep. #1).

[0090] For mapping to the remaining actual CCs, frequency-direction repetition based on a specific RV (Redundancy Version) may be applied, for example, the remaining actual CCs may use a different RV value (e.g., add 1 for each repetition of the remaining actual CCs) from the RV used for the specific actual CC.

[0091] If the available resources of the remaining actual CCs are less than the available resources of a particular actual CC, mapping may be performed by repeating only a portion of the particular actual CC, or mapping of the TB may be performed based on the available resources and / or the applied RV values ​​of the remaining actual CCs.

[0092] If the available resources of the remaining actual CCs are greater than the available resources of a particular actual CC, the mapping may be performed multiple times for the particular actual CC, or the mapping for the TB may be performed based on the available resources and / or the applied RV values ​​of the remaining actual CCs.

[0093] (Example 3c) HARQ process management In a virtual CC, the retransmission control process (HARQ process) may be defined and managed in each actual CC, or may be defined and managed across (across) the actual CCs.

[0094] In a specific actual CC, TBs in other actual CCs included in the same virtual CC may be retransmitted. In this case, for example, the base station 10 may include information related to the actual CC to be retransmitted in DCI and notify the terminal 20 of the information.

[0095] In a virtual CC, when retransmission control processes are defined and managed across actual CCs, the maximum number of retransmission control processes may be the sum of the maximum number in each actual CC.

[0096] (Embodiment 3d) Feedback The method described in embodiment 1a is applied to feedback regarding the PDSCH.

[0097] According to the above-described third embodiment, it is possible to perform generation and mapping of transport blocks when using discontinuous frequency resources in the frequency domain in wireless communication. Furthermore, in the third embodiment, operations related to generation of TBs and the like are performed only on specific actual CCs, which simplifies the operation of a terminal and enables operation in accordance with flexible and efficient resource allocation.

[0098] (First Modification) A first modification applicable to the first, second, and third embodiments will be described.

[0099] In a first modification, a scrambling sequence for the PDSCH or PUSCH may be a sequence based on an index associated with each actual CC. For example, the index associated with each actual CC may be included in a formula for calculating the sequence.

[0100] Alternatively, the sequence may be a sequence based on an index related to a specific actual CC. Here, the specific actual CC may be an actual CC of a PDSCH or a PUSCH, or an actual CC with the smallest or largest index among actual CCs included in a virtual CC, or may be an actual CC related to a PDCCH (scheduling-PDCCH) that schedules the PDSCH or PUSCH, or may be configured and indicated by the base station 10 (BS-configured / indicated).

[0101] Alternatively, the sequence may be a sequence based on an index associated with a virtual CC.

[0102] (Second Modification) A second modification applicable to the first, second, and third embodiments will be described.

[0103] In a second modification, the processes and methods described in the first, second, and third embodiments may be applied to terminal-to-terminal communication and a channel for terminal-to-terminal communication (Sidelink channel). That is, the downlink data channel (PDSCH) and the uplink data channel (PUSCH) may be replaced with a data channel for terminal-to-terminal communication (PSSCH).

[0104] (Third Modification) A third modification applicable to the first, second, and third embodiments will be described.

[0105] In the third variant, the base station 10 may switch between the processes and methods described in the first, second, and third embodiments by setting the information in the RRC, MAC CE, and DCI and notifying the terminal 20 of the information.

[0106] The above-described embodiment enables generation and mapping of transport blocks when using discontinuous frequency resources in the frequency domain in wireless communication. Furthermore, since operations related to TBs are limited to actual CCs, the configuration of the terminal 20 can be prevented from becoming complicated. Furthermore, by treating virtual CCs as the same CCs as conventional CCs and performing operations related to TB generation, etc., operations conforming to flexible and efficient resource allocation are possible. Furthermore, since operations related to TB generation, etc. are performed only on specific actual CCs, terminal operations are simplified and operations conforming to flexible and efficient resource allocation are possible.

[0107] (Fourth Modification) A fourth modification applicable to the first, second, and third embodiments will be described.

[0108] In a fourth modification, actual CCs included in a virtual CC may be grouped, and the process and method applied to the actual CCs within the group may be different from the process and method applied to the actual CCs between the groups. Here, the process and method are, for example, the process and method described in Examples 1, 2, and 3.

[0109] 9 is a diagram showing an example of grouping virtual CCs according to an embodiment of the present invention. As shown in FIG. 9, a virtual CC is composed of actual CCs #0, #1, #2, and #3, with actual CCs #0 and #1 grouped into group #0 and actual CCs #2 and #3 grouped into group #1.

[0110] Here, for example, the processing and method described in Example 2 may be applied to data transmission (PDSCH, etc.) within a group that spans actual CCs #0 and #1 within group #0 (i.e., data transmission including actual CCs of the same group).

[0111] Furthermore, for data transmission between groups (PDSCH, etc.) spanning actual CC #1 of group #0 and actual CC #2 of group #1 (i.e., data transmission including actual CCs of different groups), the processing and method described in Example 1 may be applied, for example.

[0112] The grouping may be performed based on configuration, may be determined based on numerology (e.g., SCS groups actual CCs with the same SCS into the same group), or may be determined based on frequency resources (e.g., frequency bands or frequency ranges (FRs) into the same group).

[0113] (Fifth Modification) A fifth modification applicable to the first, second, and third embodiments will be described.

[0114] In a fifth modification, control related to retransmission control (HARQ) may be performed in units of virtual CCs.

[0115] (5-1) The maximum number of retransmission control processes (HARQ processes) may be defined for each virtual CC, and terminal capability (UE capability) related to the retransmission control processes may be reported from the terminal 20 to the base station 10. The terminal capability includes, for example, information such as the maximum number of retransmission control processes.

[0116] (5-2) Retransmission control processes may be defined and managed across actual CCs. Furthermore, the following 5-2a to 5-2d may be applied.

[0117] (5-2a) The retransmission control process number (HARQ process number, HPN) or an index indicating the number may be defined on a virtual CC basis. For example, an integer value from 0 to 15 may be defined as the retransmission control process number within a virtual CC. Note that the maximum value is not limited to 15.

[0118] (5-2b) Retransmission control process numbers or indices indicating the numbers may be defined in association with (linked to) actual CCs. For example, retransmission control process numbers 0, 1, 2, and 3 may be defined as being associated with actual CC #0, and retransmission control process numbers 0, 1, 2, and 3 may be defined as being associated with actual CC #1. Furthermore, notification may be performed as follows in transmission and retransmission.

[0119] At the time of the first transmission, the base station 10 notifies the terminal 20 of the index of the actual CC on which transmission is performed and the retransmission control process number.

[0120] When issuing a retransmission instruction, the base station 10 notifies the terminal 20 of the index of the actual CC at the time of the initial transmission and the retransmission control process number.

[0121] In data transmission that crosses (spans) multiple actual CCs corresponding to a retransmission control process number, the index of a specific actual CC (e.g., the smallest index of the actual CC among the multiple actual CCs) may be notified from the base station 10 to the terminal 20.

[0122] (5-2c) Multiple transmission data associated with the same retransmission control process number within a virtual CC may be combined and decoded. This decoding can improve the accuracy of the decoding result.

[0123] (5-2d) The retransmission control process number of the downlink semi-persistent scheduling (DL (Downlink) SPS (Semi-Persistent Scheduling)) and / or the uplink persistent scheduling (UL (Uplink) CG (Configured Grant)) may be determined based on the setting of the retransmission control process number in the virtual CC. Note that the DL SPS and the UL CG may have different names, and may have the function of performing transmission or reception in periodic resources without receiving scheduling information for each transmission or reception.

[0124] (5-3) Operations related to information notified by the MAC-CE included in the TB may be defined, for example, as shown in 5-3a or 5-3b below.

[0125] (5-3a) The information notified by the MAC-CE included in the TB may be applied to the entire virtual CC.

[0126] (5-3b) Information notified by the MAC-CE contained in a TB may be applied to a specific actual CC.

[0127] (5-3b-1) The information may be applied to all actual CCs on which the TB is transmitted.

[0128] (5-3b-2) The information may be applied to a specific actual CC among the actual CCs through which the TB is transmitted. For example, the information may be applied to the actual CC with the smallest index value among the actual CCs through which the TB is transmitted, the actual CC notified by MAC-CE, and the actual CC associated (linked) with the retransmission control process number of the TB.

[0129] (Sixth Modification) A sixth modification applicable to the first, second, and third embodiments will be described.

[0130] In a sixth modification, control related to retransmission control (HARQ) may be performed in units of actual CCs.

[0131] (6-1) The maximum number of retransmission control processes (HARQ processes) may be defined in units of actual CCs, and terminal capabilities (UE capability) related to the retransmission control processes may be reported from the terminal 20 to the base station 10. The terminal capabilities include, for example, information such as the maximum number of retransmission control processes.

[0132] (6-2) A retransmission control process may be defined and managed for each actual CC. Furthermore, the following 6-2a to 6-2c may be applied.

[0133] (6-2a) The HARQ process number (HPN) or an index indicating the number may be defined on a virtual CC basis. For example, an integer value from 0 to 15 may be defined as the retransmission control process number within a virtual CC. Note that the maximum value is not limited to 15.

[0134] (6-2b) Retransmission control process numbers or indices indicating the numbers may be defined in association with (linked to) actual CCs. For example, retransmission control process numbers 0, 1, 2, and 3 may be defined as being associated with actual CC #0, and retransmission control process numbers 0, 1, 2, and 3 may be defined as being associated with actual CC #1.

[0135] In a transmission that crosses (spans) multiple actual CCs corresponding to a retransmission control process number, the base station 10 may notify the terminal 20 of the retransmission control process number corresponding to the index of a specific actual CC (e.g., the smallest value of the indexes of the actual CCs among the multiple actual CCs, the index of the notified actual CC, etc.).

[0136] (6-2c) The retransmission control process number of downlink semi-persistent scheduling (DL (Downlink) SPS (Semi-Persistent Scheduling)) and / or uplink persistent scheduling (UL (Uplink) CG (Configured Grant)) may be determined based on the setting of the retransmission control process number in the actual CC. Note that the DL SPS and the UL CG may have different names, and may have the function of performing transmission or reception in periodic resources without receiving scheduling information for each transmission or reception.

[0137] (6-3) Operations related to information notified by the MAC-CE included in the TB may be defined, for example, as shown in 6-3a or 6-3b below.

[0138] (6-3a) The information notified by the MAC-CE included in the TB may be applied to the entire virtual CC.

[0139] (6-3b) The information notified by the MAC-CE included in the TB may be applied to a specific actual CC.

[0140] (6-3b-1) The information may be applied to all actual CCs on which the TB is transmitted.

[0141] (6-3b-2) The information may be applied to a specific actual CC among the actual CCs through which the TB is transmitted. For example, the information may be applied to the actual CC with the smallest index value among the actual CCs through which the TB is transmitted, the actual CC notified by MAC-CE, and the actual CC associated (linked) with the retransmission control process number of the TB.

[0142] According to the above-described embodiment, in wireless communication, data can be transmitted and received using non-contiguous frequency resources in the frequency domain, and control related to HARQ control can be efficiently executed.

[0143] (Device Configuration) Next, a functional configuration example of the base station 10 and the terminal 20 that execute the processes and operations described above will be described. The base station 10 and the terminal 20 include functions for implementing the above-described embodiments. However, the base station 10 and the terminal 20 may each include only a part of the functions of the embodiments.

[0144] <Base Station 10> Fig. 10 is a diagram showing an example of the functional configuration of the base station 10 according to an embodiment of the present invention. As shown in Fig. 10, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Fig. 10 is merely an example. The names of the functional divisions and functional units may be any as long as they can perform the operations according to the embodiment of the present invention. Furthermore, the transmitting unit 110 and the receiving unit 120 may be collectively referred to as a communication unit.

[0145] The transmitter 110 has a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. The transmitter 110 also transmits inter-network node messages to other network nodes. The receiver 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of higher layers from the received signals. The transmitter 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, etc. to the terminal 20. The receiver 120 also receives inter-network node messages from other network nodes.

[0146] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20. The content of the setting information is, for example, information relating to non-contiguous frequency resources.

[0147] As described in the embodiments, the control unit 140 performs control related to discontinuous frequency resources. The function unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the function unit related to signal reception in the control unit 140 may be included in the receiving unit 120.

[0148] <Terminal 20> Fig. 11 is a diagram showing an example of the functional configuration of the terminal 20 in an embodiment of the present invention. As shown in Fig. 11, the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 11 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention. Furthermore, the transmitting unit 210 and the receiving unit 220 may be collectively referred to as a communication unit.

[0149] The transmitter 210 creates a transmission signal from transmission data and transmits the transmission signal wirelessly. The receiver 220 wirelessly receives various signals and acquires higher layer signals from the received physical layer signals. The receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, and the like transmitted from the base station 10. For example, the transmitter 210 transmits a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), and the like to another terminal 20 as D2D communication, and the receiver 220 receives the PSCCH, PSSCH, PSDCH, or PSBCH, and the like, from the other terminal 20.

[0150] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220. The setting unit 230 also stores setting information that is set in advance. The content of the setting information is, for example, information related to non-contiguous frequency resources.

[0151] As described in the embodiments, the control unit 240 performs control related to discontinuous frequency resources. The function unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the function unit related to signal reception in the control unit 240 may be included in the receiving unit 220.

[0152] (Hardware Configuration) The block diagrams (FIGS. 10 and 11) used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0153] Functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0154] For example, the base station 10, the terminal 20, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 12 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and the terminal 20 described above may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0155] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0156] Each function in the base station 10 and the terminal 20 is realized by loading specified software (programs) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of reading and writing data in the memory device 1002 and the auxiliary memory device 1003.

[0157] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0158] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002 and executes various processes in accordance with the programs. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 140 of the base station 10 shown in FIG. 10 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. Furthermore, for example, the control unit 240 of the terminal 20 shown in FIG. 11 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may also be transmitted from a network via a telecommunications line.

[0159] The storage device 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), etc. The storage device 1002 may also be called a register, a cache, a main memory, etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0160] The secondary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of the storage device 1002 and the secondary storage device 1003.

[0161] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transmission / reception antenna, an amplifier unit, a transmission / reception unit, a transmission path interface, etc. may be realized by the communication device 1004. The transmission / reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated.

[0162] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0163] Furthermore, each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0164] Furthermore, the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0165] Fig. 13 shows an example configuration of a vehicle 2001. As shown in Fig. 13, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.

[0166] The drive unit 2002 is configured, for example, by an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0167] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0168] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a front or rear wheel rotation speed signal obtained by a rotation speed sensor 2022, a front or rear wheel air pressure signal obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0169] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various types of information, such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information acquired from external devices via the communication module 2013 or the like to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001. The information service unit 2012 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that output information to the outside.

[0170] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0171] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided in the vehicle 2001.

[0172] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0173] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021-2028 input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above-mentioned input.

[0174] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle-to-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.

[0175] (Summary of Embodiments) As described above, according to the embodiments of the present invention, there is provided a terminal having: a control unit that assumes that, in non-contiguous frequency resources constituted by a plurality of contiguous frequency resources, a retransmission control process is managed for each of the non-contiguous frequency resources, and that a number of the retransmission control process is defined in the non-contiguous frequency resources, or a number associated with the contiguous frequency resources is defined in the non-contiguous frequency resources; and a transmission unit that transmits terminal capabilities including the maximum number of the retransmission control processes in the non-contiguous frequency resources to a base station.

[0176] With the above configuration, in wireless communication, data can be transmitted and received using non-contiguous frequency resources in the frequency domain, and control related to HARQ control can be efficiently executed.

[0177] Furthermore, according to an embodiment of the present invention, there is provided a terminal including: a control unit that assumes that, in non-contiguous frequency resources constituted by a plurality of contiguous frequency resources, a retransmission control process is managed for each of the contiguous frequency resources, and that a number of the retransmission control process is defined in the non-contiguous frequency resources, or a number associated with the contiguous frequency resources is defined in the non-contiguous frequency resources; and a transmission unit that transmits terminal capabilities including the maximum number of retransmission control processes in the contiguous frequency resources to a base station.

[0178] With the above configuration, in wireless communication, data can be transmitted and received using non-contiguous frequency resources in the frequency domain, and control related to HARQ control can be efficiently executed.

[0179] The mobile station may further include a receiving unit configured to receive, from the base station, the minimum value among the indexes of the plurality of consecutive frequency resources used in data transmission corresponding to the retransmission control process.

[0180] With the above configuration, in wireless communication, data can be transmitted and received using non-contiguous frequency resources in the frequency domain, and control related to HARQ control can be efficiently executed.

[0181] Furthermore, according to an embodiment of the present invention, there is provided a terminal having: a control unit that groups a plurality of consecutive frequency resources into a plurality of groups in a non-consecutive frequency resource configuration; and a transmission unit that performs data transmission using the plurality of consecutive frequency resources within the group and data transmission using the consecutive frequency resources in a plurality of different groups using different methods.

[0182] With the above configuration, in wireless communication, data can be transmitted and received using non-contiguous frequency resources in the frequency domain.

[0183] Furthermore, according to an embodiment of the present invention, there is provided a base station including: a control unit that assumes that, in non-contiguous frequency resources constituted by a plurality of contiguous frequency resources, a retransmission control process is managed for each of the non-contiguous frequency resources, and that a number of the retransmission control process is defined in the non-contiguous frequency resources, or a number associated with the contiguous frequency resources is defined in the non-contiguous frequency resources; and a receiving unit that receives, from a terminal, terminal capabilities including the maximum number of retransmission control processes in the non-contiguous frequency resources.

[0184] With the above configuration, in wireless communication, data can be transmitted and received using non-contiguous frequency resources in the frequency domain, and control related to HARQ control can be efficiently executed.

[0185] Furthermore, according to an embodiment of the present invention, there is provided a communication method executed by a terminal, comprising: a step of assuming that, in non-contiguous frequency resources constituted by a plurality of contiguous frequency resources, a retransmission control process is managed for each of the non-contiguous frequency resources, and that a number of the retransmission control process is defined in the non-contiguous frequency resources, or a number associated with the contiguous frequency resources is defined in the non-contiguous frequency resources; and a step of transmitting terminal capability including the maximum number of retransmission control processes in the non-contiguous frequency resources to a base station.

[0186] With the above configuration, in wireless communication, data can be transmitted and received using non-contiguous frequency resources in the frequency domain, and control related to HARQ control can be efficiently executed.

[0187] (Supplementary Notes on the Embodiments) Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention; matters described in two or more items may be used in combination as needed, and matters described in one item may apply to matters described in another item (as long as there is no contradiction). Boundaries between functional units or processing units in functional block diagrams do not necessarily correspond to boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof. The software operated by the processor of the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor of the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

[0188] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0189] Each aspect / embodiment described in the present disclosure may be applied to at least one of systems using LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), NR (New Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable systems, and next-generation systems enhanced based on these. Furthermore, a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G, etc.) may also be applied.

[0190] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described herein may be rearranged unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order and are not limited to the particular order presented.

[0191] In this specification, a specific operation described as being performed by the base station 10 may be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and another network node other than the base station 10 (such as, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station 10, the other network node may be a combination of multiple other network nodes (such as an MME and an S-GW).

[0192] The information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0193] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be transmitted to another device.

[0194] In the present disclosure, the determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0195] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0196] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0197] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0198] Note that terms described in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0199] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0200] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by an index.

[0201] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0202] In the present disclosure, terms such as "base station (BS)," "radio base station," "base station device," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" may be used interchangeably. A base station may also be referred to by terms such as a macrocell, a small cell, a femtocell, and a picocell.

[0203] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication services within that coverage.

[0204] In the present disclosure, the base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.

[0205] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," and the like may be used interchangeably.

[0206] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0207] At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be a mobile object that moves autonomously based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0208] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0209] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station may be configured to have the functions of the user terminal described above.

[0210] As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0211] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0212] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0213] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0214] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0215] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0216] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0217] A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0218] Numerology may be communication parameters applied to the transmission and / or reception of a signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, etc.

[0219] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may be a time unit based on numerology.

[0220] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0221] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0222] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0223] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units. Note that the definition of TTI is not limited to this.

[0224] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0225] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0226] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0227] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0228] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0229] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0230] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0231] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0232] A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0233] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0234] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0235] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples, and various changes may be made to the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.

[0236] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0237] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0238] The aspects / embodiments described in this disclosure may be used alone, in combination, or switched depending on the implementation. Notification of predetermined information (e.g., notification that "X is true") is not limited to explicit notification, but may be implicit (e.g., not notifying the predetermined information).

[0239] Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

[0240] REFERENCE SIGNS LIST 10 Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Controller 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Controller 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Claims

1. A terminal having: a control unit that assumes that, in non-contiguous frequency resources consisting of a plurality of contiguous frequency resources, a retransmission control process is managed for each of the non-contiguous frequency resources, and assumes that a number of the retransmission control process is defined in the non-contiguous frequency resources, or a number associated with the contiguous frequency resources is defined in the non-contiguous frequency resources; and a transmission unit that transmits terminal capabilities including the maximum number of retransmission control processes in the non-contiguous frequency resources to a base station.

2. A terminal having: a control unit that assumes that, in non-contiguous frequency resources consisting of a plurality of contiguous frequency resources, a retransmission control process is managed for each of the contiguous frequency resources, and assumes that a number of the retransmission control process is defined in the non-contiguous frequency resources, or a number associated with the contiguous frequency resources is defined in the non-contiguous frequency resources; and a transmission unit that transmits terminal capabilities including the maximum number of retransmission control processes in the contiguous frequency resources to a base station.

3. The terminal according to claim 1 or claim 2, further comprising: a receiving unit that receives, when a plurality of consecutive frequency resources are used in data transmission corresponding to the retransmission control process, the minimum value of the indexes of the plurality of consecutive frequency resources from the base station.

4. A terminal having: a control unit that groups a plurality of consecutive frequency resources into a plurality of groups in a non-consecutive frequency resource structure constituted by the plurality of consecutive frequency resources; and a transmission unit that performs data transmission using different methods for data transmission using the plurality of consecutive frequency resources within the group and data transmission using the consecutive frequency resources in a plurality of different groups.

5. A base station having: a control unit that assumes that, in non-contiguous frequency resources consisting of a plurality of contiguous frequency resources, a retransmission control process is managed for each of the non-contiguous frequency resources, and assumes that a number of the retransmission control process is defined in the non-contiguous frequency resources, or a number associated with the contiguous frequency resources is defined in the non-contiguous frequency resources; and a receiving unit that receives terminal capabilities from a terminal, including the maximum number of retransmission control processes in the non-contiguous frequency resources.

6. A communication method executed by a terminal, comprising: a step of assuming that in non-contiguous frequency resources consisting of a plurality of contiguous frequency resources, a retransmission control process is managed for each of the non-contiguous frequency resources, and assuming that a number of the retransmission control process is defined in the non-contiguous frequency resources, or a number associated with the contiguous frequency resources is defined in the non-contiguous frequency resources; and a step of transmitting terminal capabilities including the maximum number of retransmission control processes in the non-contiguous frequency resources to a base station.

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