Terminal and wireless communication method

Abstract

According to the present invention, a terminal receives single piece of downlink control information that instructs scheduling having a combination of a plurality of cells as a target. The terminal reports, to a network, whether or not to support switching or adaptation of a bandwidth part in accordance with the format of the downlink control information, separately from a terminal capability indicating whether or not to support switching of the bandwidth part in accordance with a format other than the format of the downlink control information.

Description

Terminal and wireless communication method

[0001] The present disclosure relates to a terminal and a wireless communication method that support a mechanism for scheduling data channels transmitted by multiple carriers using single downlink control information transmitted by a specific carrier.

[0002] The 3rd Generation Partnership Project (3GPP: registered trademark) is developing specifications for the 5th generation mobile communication system (5G, also known as New Radio (NR) or Next Generation (NG)), and is also developing specifications for the next generation, known as Beyond 5G, 5G Evolution, or 6G.

[0003] 3GPP has been considering the introduction of a function for scheduling PDSCH (Physical Downlink Shared Channel) / PUSCH (Physical Uplink Shared Channel) transmitted by multiple component carriers (CCs) using single downlink control information (DCI) (see Non-Patent Document 1). Such a function is called single DCI multi-carrier PDSCH / PUSCH scheduling or single DCI multi-cell PDSCH / PUSCH scheduling (hereinafter referred to as single DCI multi-cell PDSCH / PUSCH scheduling).

[0004] In order to support such single DCI multi-cell PDSCH / PUSCH scheduling, a single DCI format (DCI format 0_3 / 1_3) capable of scheduling PDSCH / PUSCH for multiple cells has been agreed upon (Non-Patent Document 2).

[0005] In addition, a BWP switching indicator field is defined as a field included in DCI format 0_3 / 1_3, and BWP (Bandwidth part) switching instructions using DCI format 0_3 / 1_3 are supported. This makes it possible to simultaneously instruct BWP switching for multiple CCs using a single DCI.

[0006] "New WID on Multi-carrier enhancements", RP-213577, 3GPP TSG RAN Meeting #94e, 3GPP, December 2021 3GPP TS 38.212 V18.2.0, 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Multiplexing and channel coding(Release 18), 3GPP, March 2024

[0007] BWP switching using DCI format 0_3 / 1_3 is an extension of BWP switching using the existing DCI format. It is desirable for the terminal (User Equipment, UE) to be able to report to the network (radio base station, gNB) whether it supports BWP switching using DCI format 0_3 / 1_3, distinguishing it from BWP switching using the existing DCI format.

[0008] However, in the existing 3GPP specifications, a UE cannot report to a network whether it supports BWP-related features using DCI format 0_3 / 1_3, such as whether it supports BWP switching using DCI format 0_3 / 1_3, in distinction from BWP switching using the existing DCI format. This makes it difficult to switch and apply BWP using DCI format 0_3 / 1_3 appropriately according to the UE's capabilities.

[0009] Therefore, the following disclosure has been made in consideration of the above circumstances, and aims to provide a terminal and a wireless communication method that can realize BWP switching and adaptation using appropriate DCI format 0_3 / 1_3 according to the capability of the UE.

[0010] One aspect of the present disclosure is a terminal (UE200) that includes a receiving unit (control signal / reference signal processing unit 240) that receives single downlink control information that instructs scheduling for a combination of multiple cells, and a control unit (control unit 270) that reports to a network whether or not it supports switching or adapting bandwidth portions according to the format of the downlink control information, distinguishing it from a terminal capability that indicates whether or not it supports switching bandwidth portions according to a format other than the format of the downlink control information.

[0011] One aspect of the present disclosure is a wireless communication method in a terminal, including the steps of receiving single downlink control information instructing scheduling for a combination of multiple cells, and reporting to a network whether or not a terminal capability indicates support for switching or adapting bandwidth portions according to the format of the downlink control information, distinguishing the terminal capability from a capability indicating whether or not a terminal capability indicates support for switching bandwidth portions according to a format other than the format of the downlink control information.

[0012] FIG. 1 is a diagram illustrating an overall schematic configuration of a wireless communication system 10. FIG. 2 is a diagram illustrating frequency bands used in the wireless communication system 10. FIG. 3 is a diagram illustrating an example configuration of a radio frame, a subframe, and a slot used in the wireless communication system 10. FIG. 4 is a functional block configuration diagram of a gNB 100 and a UE 200. FIG. 5 is a diagram illustrating an example of a scheduling method that can be supported by the wireless communication system 10. FIG. 6 is a diagram illustrating an example of PDSCH scheduling using Single DCI Multi-Cell PDSCH / PUSCH scheduling. FIG. 7 is a diagram illustrating an example (Alt. 1) of a communication sequence according to DCI format 0_3 / 1_3 according to an exemplary operation. FIG. 8 is a diagram illustrating an example of a UE capability that reports support for BWP switching using an existing DCI format. FIG. 9 is a diagram illustrating an example (Alt. 2) of a communication sequence according to DCI format 0_3 / 1_3 according to an exemplary operation. FIG. 10 is a diagram illustrating an example of the hardware configuration of a gNB 100 and a UE 200. FIG. 11 is a diagram illustrating an example configuration of a vehicle 2001.

[0013] Hereinafter, embodiments will be described with reference to the drawings. Note that the same or similar reference numerals are used to designate the same functions or configurations, and descriptions thereof will be omitted as appropriate.

[0014] (1) Overall Schematic Configuration of Wireless Communication System Fig. 1 is a diagram showing the overall schematic configuration of a wireless communication system 10 according to this embodiment. The wireless communication system 10 is a wireless communication system conforming to 5G New Radio (NR) and includes a Next Generation-Radio Access Network 20 (hereinafter, NG-RAN 20) and a terminal 200 (User Equipment 200, hereinafter, UE 200).

[0015] The wireless communication system 10 may be a wireless communication system conforming to a system called Beyond 5G, 5G Evolution, or 6G.

[0016] The NG-RAN 20 includes a radio base station 100 (hereinafter, gNB 100). Note that the specific configuration of the radio communication system 10, including the number of gNBs and UEs, is not limited to the example shown in FIG. 1 .

[0017] The NG-RAN 20 actually includes a plurality of NG-RAN nodes, specifically, gNBs (or ng-eNBs), and is connected to a 5G core network (5GC, not shown). The NG-RAN 20 and the 5GC may also be simply referred to as a "network."

[0018] The gNB100 is a radio base station that complies with NR and performs NR-compliant radio communication with the UE 200. The gNB100 and UE 200 are capable of supporting Massive MIMO, which generates highly directional beams by controlling radio signals transmitted from multiple antenna elements, Carrier Aggregation (CA), which aggregates multiple component carriers (CCs), and Dual Connectivity (DC), which simultaneously communicates between the UE and multiple NG-RAN nodes.

[0019] The type of DC may be Multi-RAT Dual Connectivity (MR-DC) that uses multiple radio access technologies, or NR-NR Dual Connectivity (NR-DC) that uses only NR. MR-DC may also be E-UTRA-NR Dual Connectivity (EN-DC) in which the eNB constitutes the master node (MN) and the gNB constitutes the secondary node (SN), or vice versa, NR-E-UTRA Dual Connectivity (NE-DC).

[0020] The wireless communication system 10 may also support multiple frequency ranges (FR).

[0021] FR1: 410 MHz to 7.125 GHz FR2: FR2-1: 24.25 GHz to 52.6 GHz FR2-2: Over 52.6 GHz to 71 GHz FR1 may use a Sub-Carrier Spacing (SCS) of 15, 30, or 60 kHz and a bandwidth (BW) of 5 to 100 MHz. FR2 is a higher frequency than FR1 and may use an SCS of 60 or 120 kHz (including 240 kHz) and a bandwidth (BW) of 50 to 400 MHz.

[0022] Furthermore, the wireless communication system 10 may also support frequency bands higher than the FR2 frequency band. Specifically, the wireless communication system 10 may support frequency bands above 52.6 GHz up to 114.25 GHz.

[0023] Alternatively, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform - Spread (DFT-S-OFDM) with a larger Sub-Carrier Spacing (SCS) may be applied, and DFT-S-OFDM may be applied not only to the uplink (UL) but also to the downlink (DL).

[0024] FIG. 3 shows an example of the configuration of radio frames, subframes, and slots used in the radio communication system 10.

[0025] As shown in Figure 3, one slot consists of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period). Note that the number of symbols constituting one slot does not necessarily have to be 14 (e.g., 28 or 56 symbols). The number of slots per subframe may also vary depending on the SCS. Furthermore, the SCS may be wider than 240 kHz (e.g., 480 kHz or 960 kHz, as shown in Figure 3).

[0026] The time direction (t) shown in Fig. 3 may be called a time domain, a symbol period, a symbol time, etc. The frequency direction may be called a frequency domain, a resource block (RB), a resource block group (RBG), a subcarrier, a BWP (Bandwidth part), etc.

[0027] As described above, the wireless communication system 10 may have an extended function related to multiple carriers (specifically, CCs). Specifically, the wireless communication system 10 may support a function (single DCI multi-slot PDSCH / PUSCH scheduling) for scheduling PDSCHs (Physical Downlink Shared Channels) / PUSCHs (Physical Uplink Shared Channels) transmitted in multiple slots using single DCI (Downlink Control Information).

[0028] Specifically, the wireless communication system 10 may support a scheduling method (self-carrier scheduling) in which the scheduling DCI and the channel to be scheduled are the same CC, a cross-carrier scheduling method (cross carrier scheduling) in which scheduling of channels spanning multiple CCs is applied, and a single DCI (single DCI), i.e., a scheduling method (multi-carrier scheduling) in which channels are assigned to multiple different CCs by one DCI.

[0029] More specifically, the wireless communication system 10 may support a function of scheduling PDSCH / PUSCHs transmitted by multiple CCs using a single DCI (single DCI multi-carrier PDSCH / PUSCH scheduling or single DCI multi-cell PDSCH / PUSCH scheduling). Hereinafter, this function will be referred to as single DCI multi-cell PDSCH / PUSCH scheduling.

[0030] Only one of single DCI multi-slot PDSCH / PUSCH scheduling and single DCI multi-cell PDSCH / PUSCH scheduling can be used, and both do not necessarily have to be used simultaneously, but the wireless communication system 10 may support simultaneous use of both.

[0031] Furthermore, in order to support such Single DCI Multi-Cell PDSCH / PUSCH scheduling, the wireless communication system 10 may use a single DCI format (which may be called DCI format 0_3 / 1_3) that can schedule the PDSCH / PUSCH of multiple cells. By using DCI conforming to this DCI format, it becomes possible to simultaneously schedule multiple cells included in a set of multiple cells (set of cells).

[0032] DCI format 0_3 / 1_3 may include the following types of fields:

[0033] - Type-1 field - Type-1A field: A single field indicating information common to all co-scheduled cells - Type-1B field: A single field indicating individual information for each co-scheduled cell via a joint indication - Type-1C field: A single field indicating information for only one of the co-scheduled cells - Type-2 field: A separate field for each co-scheduled cell - Type-3 field: A common or separate field for each co-scheduled cell, or separate field for each subgroup, depending on explicit configuration.

[0034] (2) Functional Block Configuration of Wireless Communication System Next, a functional block configuration of the wireless communication system 10 will be described. Specifically, a functional block configuration of the UE 200 will be described. Fig. 4 is a functional block configuration diagram of the gNB 100 and the UE 200.

[0035] As shown in FIG. 4 , the UE 200 includes a radio signal transmitting / receiving unit 210, an amplifier unit 220, a modulation / demodulation unit 230, a control signal / reference signal processing unit 240, an encoding / decoding unit 250, a data transmitting / receiving unit 260, and a control unit 270.

[0036] It should be noted that Fig. 4 shows only the main functional blocks relevant to the description of the embodiment, and that the UE 200 (gNB 100) has other functional blocks (e.g., a power supply unit, etc.). Fig. 4 shows the functional block configuration of the UE 200, and for the hardware configuration, please refer to Fig. 10.

[0037] The radio signal transmitting and receiving unit 210 transmits and receives radio signals conforming to NR. The radio signal transmitting and receiving unit 210 can support Massive MIMO, which generates a more directional beam by controlling radio (RF) signals transmitted from multiple antenna elements, Carrier Aggregation (CA), which aggregates and uses multiple component carriers (CCs), and Dual Connectivity (DC), which simultaneously communicates between a UE and two NG-RAN nodes.

[0038] The amplifier unit 220 is configured by a PA (Power Amplifier) / LNA (Low Noise Amplifier), etc. The amplifier unit 220 amplifies the signal output from the modulation / demodulation unit 230 to a predetermined power level. The amplifier unit 220 also amplifies the RF signal output from the radio signal transmission / reception unit 210.

[0039] The modem unit 230 performs data modulation / demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (e.g., gNB 100). The modem unit 230 may apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform - Spread (DFT-S-OFDM). Furthermore, DFT-S-OFDM may be used not only for the uplink (UL) but also for the downlink (DL).

[0040] The control signal and reference signal processor 240 executes processing related to various control signals transmitted and received by the UE 200 and processing related to various reference signals transmitted and received by the UE 200 .

[0041] Specifically, the control signal / reference signal processing unit 240 receives various control signals, for example, control signals of a radio resource control layer (RRC), transmitted via a predetermined control channel from the gNB 100. In addition, the control signal / reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.

[0042] The control signal / reference signal processor 240 performs processing using reference signals (RS) such as a Demodulation Reference Signal (DMRS) and a Phase Tracking Reference Signal (PTRS).

[0043] DMRS is a reference signal (pilot signal) known between the base station and the terminal for estimating the fading channel used for data demodulation, while PTRS is a terminal-specific reference signal for estimating phase noise, which is an issue in high frequency bands.

[0044] In addition to the DMRS and PTRS, the reference signals may also include a Channel State Information-Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), and a Positioning Reference Signal (PRS) for position information.

[0045] The channels include a control channel and a data channel. The control channels may include a Physical Downlink Control Channel (PDCCH), a Physical Uplink Control Channel (PUCCH), a Random Access Channel (RACH, Downlink Control Information (DCI) including a Random Access Radio Network Temporary Identifier (RA-RNTI)), a Physical Broadcast Channel (PBCH), etc.

[0046] Furthermore, the data channel includes a PDSCH, a PUSCH, etc. Data may refer to data transmitted via a data channel.

[0047] The control signal and reference signal processor 240 can receive downlink control information (DCI) transmitted from the network. Specifically, the control signal and reference signal processor 240 can receive DCI according to the DCI format defined in 3GPP TS38.212. In particular, in this embodiment, it can receive UL and DL scheduling DCI. More specifically, the control signal and reference signal processor 240 may receive DCI according to DCI formats 0_0, 0_1, 0_2, 1_0, 1_1, and 1_2.

[0048] Furthermore, in this embodiment, the control signal and reference signal processing unit 240 may receive DCI in accordance with DCI formats 0_3 and 1_3 for Single DCI Multi-Cell PDSCH / PUSCH scheduling. That is, the control signal and reference signal processing unit 240 can receive single downlink control information that instructs scheduling for a combination of multiple cells. In this embodiment, the control signal and reference signal processing unit 240 may constitute a receiving unit.

[0049] DCI formats 0_0, 0_1, 0_2, and 0_3 may be interpreted as UL scheduling grants, and DCI formats 1_0, 1_1, 1_2, and 1_3 may be interpreted as DL scheduling assignments.

[0050] DCI format 0_3 may be used to schedule one PUSCH in one cell or multiple PUSCHs in one PUSCH in multiple cells, while DCI format 1_3 may be used to schedule one PDSCH in one cell or multiple PDSCHs in one PDSCH in multiple cells.

[0051] Control signal and reference signal processing unit 240 may receive DCI corresponding to single DCI multi-slot PDSCH / PUSCH scheduling and DCI corresponding to single DCI multi-cell PDSCH / PUSCH scheduling.

[0052] Specifically, for single DCI multi-slot PDSCH / PUSCH scheduling, the control signal and reference signal processor 240 can receive a single DCI that schedules channels transmitted by multiple slots. Also, for single DCI multi-cell PDSCH / PUSCH scheduling, the control signal and reference signal processor 240 can receive a single DCI that schedules channels transmitted by multiple carriers.

[0053] Here, the channel may include the above-mentioned control channel and data channel, and may not be particularly limited to the uplink and downlink directions, but may typically mean at least one of PDSCH and PUSCH. The carrier may mean a component carrier (CC), but may also be simply interpreted as a carrier or subcarrier.

[0054] Furthermore, the control signal and reference signal processor 240 may transmit to the network capability information of the UE 200. In particular, in this embodiment, the control signal and reference signal processor 240 can transmit UE capability information (see FIG. 1 ) related to scheduling to the gNB 100.

[0055] The control signal and reference signal processor 240 may transmit capability information including the terminal capability (UE capability) related to scheduling of the UE 200.

[0056] The control signal and reference signal processing unit 240 can transmit capability information related to scheduling for a combination of multiple cells (Set of cells) using DCI (DCI format 0_3 / 1_3) for Single DCI Multi-Cell PDSCH / PUSCH scheduling. Details of terminal capabilities included in the capability information will be described later, but the capability information may include terminal capabilities related to the number of cells (scheduling cells) to which the DCI is transmitted and / or the number of scheduled cells scheduled by the DCI. The control signal and reference signal processing unit 240 may report the capability information each time it is used in a scheduling cell and a scheduled cell, under the control of the control unit 270.

[0057] In addition, the control signal / reference signal processing unit 240 may report capability information including the terminal capability of the UE 200 regarding BWP (bandwidth part) switching and adaptation to the network under the control of the control unit 270.

[0058] The encoding / decoding unit 250 performs data division / concatenation and channel coding / decoding for each predetermined communication destination (gNB 100 or another gNB).

[0059] Specifically, the encoding / decoding unit 250 divides the data output from the data transmitting / receiving unit 260 into pieces of a predetermined size, performs channel coding on the divided data, decodes the data output from the modem unit 230, and concatenates the decoded data.

[0060] The data transmitter / receiver 260 transmits and receives Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, the data transmitter / receiver 260 assembles and disassembles PDUs / SDUs in multiple layers (such as a Medium Access Control layer (MAC), a Radio Link Control layer (RLC), and a Packet Data Convergence Protocol layer (PDCP)). The data transmitter / receiver 260 also performs data error correction and retransmission control based on Hybrid Automatic Repeat Request (Hybrid ARQ).

[0061] The control unit 270 controls each functional block constituting the UE 200. In particular, in this embodiment, the control unit 270 controls transmission or reception of a channel (for example, PDSCH / PUSCH, the same applies hereinafter) based on DCI for single DCI multi-slot PDSCH / PUSCH scheduling.

[0062] Furthermore, control unit 270 controls transmission or reception of channels based on DCI for Single DCI Multi-Cell PDSCH / PUSCH scheduling.

[0063] In this way, control unit 270 may control transmission or reception of channels based on at least one of DCI for single DCI multi-slot PDSCH / PUSCH scheduling and DCI for single DCI multi-cell PDSCH / PUSCH scheduling. Furthermore, single DCI multi-slot PDSCH / PUSCH scheduling and single DCI multi-cell PDSCH / PUSCH scheduling may be used simultaneously, and control unit 270 may perform control based on both scheduling DCIs simultaneously in parallel.

[0064] The control unit 270 may apply different settings to at least one of the cell, slot, or channel scheduled by the DCI for single DCI multi-slot PDSCH / PUSCH scheduling and the DCI for single DCI multi-cell PDSCH / PUSCH scheduling. The cell type (primary cell (PCell), primary / secondary cell (PSCell), and secondary cell (SCell)) may not be particularly limited, and a cell group (master or secondary) may be targeted. The channel type is also not particularly limited, and may be either the uplink or downlink direction, but the PDSCH / PUSCH may be targeted here.

[0065] Note that multiple cells that are simultaneously scheduled by the DCI may be called co-scheduled cells.

[0066] Furthermore, the control unit 270 may control the method of transmitting (reporting) UE capability information to the network based on at least one of the subcarrier spacing (SCS) of the scheduling cell and the SCS of the scheduled cell.

[0067] For example, when the SCS of the scheduling cell and the SCS of the scheduled cell (which may include a co-scheduled cell) are the same, the control unit 270 can cause the control signal / reference signal processing unit 240 to transmit UE Capability Information including the number of scheduled cells that can be supported, depending on whether the scheduling cell is included in a combination of multiple cells (Set of cells).

[0068] Furthermore, the control unit 270 may report to the network whether or not the UE supports BWP switching or adaptation (BWP switching / BWP adaptation) using DCI format 0_3 / 1_3, distinguishing this from UE capability, which indicates whether or not the UE supports BWP switching using other formats (which may be at least one of DCI formats 0_0 / 1_0 / 0_1 / 1_1 / 0_2 / 1_2) other than DCI for Single DCI Multi-Cell PDSCH / PUSCH scheduling (DCI format 0_3 / 1_3).

[0069] Specifically, the control unit 270 may report to the network that it supports bandwidth portion switching or adaptation (BWP switching / BWP adaptation) using DCI format 0_3 / 1_3 by reporting terminal capabilities indicating whether or not it supports BWP switching using at least one of DCI formats 0_0 / 1_0 / 0_1 / 1_1 / 0_2 / 1_2 and terminal capabilities regarding support for DCI format 0_3 / 1_3.

[0070] Furthermore, the control unit 270 may report capability information indicating whether or not the UE supports BWP switching / BWP adaptation according to DCI format 0_3 / 1_3 to the network. Specifically, the control unit 270 can cause the UE capability information indicating whether or not the UE supports BWP switching or BWP adaptation to be transmitted to the network via the control signal / reference signal processing unit 240.

[0071] The UE Capability Information may cover either BWP switching or BWP adaptation, or may cover both.

[0072] Furthermore, the gNB 100 may have a function corresponding to the above-mentioned UE 200. Specifically, the gNB 100 (control signal / reference signal processing unit 240) may be configured with a transmitter that transmits downlink control information that instructs scheduling for a combination of multiple cells, and a receiver that receives capability information related to BWP from the UE 200.

[0073] (3) Operation of the Wireless Communication System Next, a description will be given of the operation of the wireless communication system 10. Specifically, a description will be given of the operation of the UE 200 supporting Single DCI Multi-Cell PDSCH / PUSCH scheduling while supporting appropriate terminal capabilities.

[0074] (3.1) Assumptions and Issues As described above, the wireless communication system 10 may support a function of scheduling PDSCH / PUSCH of multiple CCs using a single (one) DCI (Single DCI Multi-Cell PDSCH / PUSCH scheduling).

[0075] 5 shows an example of a scheduling method that can be supported by the wireless communication system 10. Single DCI Multi-Cell PDSCH / PUSCH scheduling (Single DCI Multi-carrier PDSCH / PUSCH scheduling) has the following features compared to a conventional method in which DCI is prepared for each CC and scheduled one by one.

[0076] ・(Advantages): The load (number of blind decodes (BD)) caused by monitoring DCI (PDCCH) can be reduced. Also, the total PDCCH overhead can be reduced (the smaller the size of the single DCI is compared to the conventional DCI x number of CCs, the more effective it is). ・(Disadvantages): The instructions cannot be changed in detail for each CC (if this were possible, the size of the single DCI would increase, and the PDCCH error rate and overhead would increase). If there is an error in the PDCCH, data reception across multiple CCs will fail.

[0077] 6 shows an example of PDSCH scheduling using single DCI multi-cell PDSCH / PUSCH scheduling. As described above, DCI that schedules PUSCH / PDSCH for multiple cells using a single DCI may be referred to as DCI format 0_3 / 1_3, respectively.

[0078] DCI formats 0_3 / 1_3 can be simultaneously scheduled for a combination of cells included in a set of cells to be scheduled (Set of cells). The following requirements may be applied to the Set of cells.

[0079] - One set of cells consists of a maximum of four cells - Any cell is included in only one set of cells Figure 6 shows an example where Set of cells 1 includes CC#1 / 2 / 3 / 4, and Set of cells 2 includes CC#5 / 6 / 7. The DCI formats of Set of cells 1 and 2 may each be included in a different PDCCH.

[0080] A cell that counts the DCI size / PDCCH candidate (BD) / number of CCEs may be called a reference cell. For each set of cells, one cell may be configured that counts the DCI size / PDCCH candidate (BD) / number of CCEs of the PDCCH that schedules the cells included in each set of cells. In FIG. 6, for example, the reference cell for set of cells 1 may be CC#1, and the reference cell for set of cells 2 may be CC#5. Here, cell and CC may be interpreted interchangeably.

[0081] In this case, the DCI size / PDCCH candidate (BD) / number of CCEs of the PDCCH (DCI for set of cells 1) may be counted in CC #1. Also, the DCI size / PDCCH candidate (BD) / number of CCEs of the PDCCH (DCI for set of cells 2) may be counted in CC #5.

[0082] In this way, when a set of cells is configured in single DCI multi-cell PDSCH / PUSCH scheduling, it is necessary to clarify the functions that UE 200 that supports single DCI multi-cell PDSCH / PUSCH scheduling should support as a prerequisite.

[0083] In addition, a BWP switching indicator field may be defined in DCI format 0_3 / 1_3, and indication of BWP switching by DCI format 0_3 / 1_3 is supported. In other words, a single DCI can simultaneously indicate BWP switching of multiple CCs.

[0084] BWP switching using DCI format 0_3 / 1_3 is an extension of BWP switching using the existing DCI format. Therefore, it is desirable that the UE can report to the network whether it can support BWP switching using DCI format 0_3 / 1_3 separately from BWP switching using the existing DCI format.

[0085] However, in the existing 3GPP specifications, a UE cannot report to a network whether it supports BWP-related features using DCI format 0_3 / 1_3, such as whether it supports BWP switching using DCI format 0_3 / 1_3, in distinction from BWP switching using the existing DCI format. This makes it difficult to switch and apply BWP using DCI format 0_3 / 1_3 appropriately according to the UE's capabilities.

[0086] Note that the existing DCI format in this embodiment may mean at least one of DCI formats 0_0 / 1_0 / 0_1 / 1_1 / 0_2 / 1_2.

[0087] (3.2) Operational Example The following operational example clarifies the operations related to the functions or reports supported by the UE in Single DCI Multi-Cell PDSCH / PUSCH scheduling, and realizes appropriate BWP switching / BWP adaptation using DCI format 0_3 / 1_3 according to the UE capability.

[0088] In order to achieve appropriate BWP switching / BWP adaptation using such DCI format 0_3 / 1_3, UE capability signaling may be defined that reports whether or not BWP switching / BWP adaptation using DCI format 0_3 / 1_3 is supported, in addition to UE capability signaling that reports support for BWP switching using the existing DCI format.

[0089] Specifically, the UE may perform any of the following actions:

[0090] (Alt. 1): If a UE reports an existing UE capability for BWP switching (at least one of FG (Feature Group) 6-2 / 6-3 / 6-4) and an UE capability for supporting DCI format 0_3 / 1_3 (at least one of FG49-1 / 1b / 2 / 2b), the network may interpret this as meaning that the UE supports BWP switching instructions using DCI format 0_3 / 1_3.

[0091] Fig. 7 shows an example of a communication sequence (Alt. 1) according to DCI format 0_3 / 1_3 according to an operation example. Fig. 8 shows an example of a UE capability for reporting support for BWP switching using an existing DCI format.

[0092] As shown in Fig. 7, the UE may transmit UE capability related to existing BWP switching, specifically, UE capability related to BWP switching by DCI format 0_0 / 1_0 / 0_1 / 1_1 / 0_2 / 1_2 (see the underlined part in Fig. 8) and UE capability related to support of DCI format 0_3 / 1_3 to the network (gNB). Note that the transmission order of the UE capability related to existing BWP switching and the UE capability related to support of DCI format 0_3 / 1_3 is not particularly limited.

[0093] Based on the UE capability reported by the UE, the network may recognize that the UE supports BWP switching indications using DCI format 0_3 / 1_3, and may send DCI according to DCI format 0_3 / 1_3, specifically, DCI including a BWP switching indicator field, to the UE.

[0094] The UE may configure PDSCH / PUSCH and perform BWP switching based on the DCI received from the network.

[0095] (Alt. 2): The UE performs UE capability signaling to report whether it supports BWP switching / BWP adaptation using DCI format 0_3 / 1_3.

[0096] 9 shows an example (Alt. 2) of a communication sequence according to DCI format 0_3 / 1_3 according to an operation example. As shown in FIG. 9, the UE may report capability information indicating whether or not it supports BWP switching / BWP adaptation according to DCI format 0_3 / 1_3 to the network. The following sequence is the same as that in FIG. 7, and therefore description thereof will be omitted.

[0097] The UE may also report to the network whether it supports only BWP switching / BWP adaptation within the same SCS or BWP switching / BWP adaptation between different SCSs. Specifically, one of the following options may be applied:

[0098] (Opt.1): UE capability signaling (Feature Group) that reports support for only BWP switching / BWP adaptation within the same SCS and UE capability signaling (Feature Group) that reports support for BWP switching / BWP adaptation between different SCSs are specified.

[0099] (Opt.2): In UE capability signaling reporting support for BWP switching using DCI format 0_3 / 1_3, the UE selectively reports one of {BWP switching with the same numerology, BWP switching with the same numerology + BWP switching between different numerologies}.

[0100] The terms SCS and numerology may be used interchangeably. The relationship with support for BWP switching by an existing DCI format may also be specified. For example, when BWP switching between different SCSs by an existing DCI format is supported, BWP switching between different SCSs by DCI format 0_3 / 1_3 may also be supported.

[0101] Furthermore, the UE may support only BWP switching / BWP adaptation between up to two BWPs, or may report to the network whether it supports BWP switching / BWP adaptation between up to four BWPs in addition to up to two BWPs. Specifically, one of the following options may be applied:

[0102] (Opt.1): UE capability signaling (Feature Group) that reports support for only BWP switching / BWP adaptation between up to two BWPs, and UE capability signaling (Feature Group) that reports support for BWP switching / BWP adaptation between up to four BWPs are specified.

[0103] (Opt.2): The UE selectively reports the maximum number of BWPs from {2, 4} in UE capability signaling that reports support for BWP switching using DCI format 0_3 / 1_3.

[0104] A different value may be reported for each frequency band, or a single value (per UE) may be reported for BWP switching using DCI format 0_3 / 1_3.

[0105] Note that the relationship with support for BWP switching using the existing DCI format may be specified. Also, the same number of BWPs as the value reported according to the existing FG may be applied to each band. For example, for a band that supports BWP switching between up to four BWPs using the existing DCI format, BWP switching between up to four BWPs using DCI format 0_3 / 1_3 may also be supported.

[0106] The UE may report the UL BWP switch / DL BWP switch independently. Specifically, one of the following options may be applied:

[0107] (Opt.1): UE capability signaling (Feature Group) that reports support for only BWP switching / BWP adaptation within the same SCS and UE capability signaling (Feature Group) that reports support for BWP switching / BWP adaptation between different SCSs are specified.

[0108] (Opt.2): In UE capability signaling reporting support for BWP switching using DCI format 0_3 / 1_3, the UE selectively reports one of {BWP switching by DCI 0_3, BWP switching by DCI 1_3, BWP switching by DCI 0_3 and 1_3}.

[0109] The UE may report the number of cells to which BWP switching / BWP adaptation can be simultaneously applied in response to a single (single) DCI format 0_3 / 1_3 indication. For example, the candidate value {1, 2, 3, 4} may be set.

[0110] Furthermore, the UE may report cells to which BWP switching / BWP adaptation can be applied among the cells configured in the set of cells (scheduled cell set) in accordance with an instruction of a single DCI format 0_3 / 1_3. The UE may also report a combination of cells to which BWP switching / BWP adaptation can be applied simultaneously among the cells configured in the set of cells (scheduled cell set) in accordance with an instruction of a single DCI format 0_3 / 1_3.

[0111] Also, different UE capability signaling may be defined for the Active BWP switch and the Dormant BWP switch. Specifically, one of the following options may be applied. The Dormant BWP switch may be interpreted as an antonym of the Active BWP switch, or as BWP switching for a BWP in a dormant state.

[0112] (Opt.1): UE capability signaling (Feature Group) for reporting support for active BWP switch using DCI format 0_3 / 1_3 and UE capability signaling (Feature Group) for reporting support for dormant BWP switch using DCI format 0_3 / 1_3 are specified.

[0113] (Opt.2): In UE capability signaling reporting support for BWP switching using DCI format 0_3 / 1_3, the UE selectively reports one of {active BWP switch, dormant BWP switch, active + dormant BWP switch}.

[0114] Note that the relationship with support for BWP switching in the existing DCI format may be specified. For example, when dormant BWP switching in the existing DCI format is supported, dormant BWP switching in DCI format 0_3 / 1_3 may also be supported.

[0115] Regarding the BWP switching delay, the delay specified in DCI format 0_3 / 1_3 may be different from the value specified in the existing DCI format. Specifically, different delay values ​​may be specified depending on the number of cells that can be simultaneously switched according to DCI format 0_3 / 1_3. Alternatively, different delay values ​​may be specified depending on the terminal capability (whether BWP switching delay type 1 or BWP switching delay type 2 is supported). The BWP switching delay may be interpreted as the time (which may be expressed in number of slots) from when a BWP switching (change) is triggered by a DCI to when the BWP change is completed. BWP switching delay type 1 may be determined depending on the terminal capability. For BWP switching delay type 2, if the BWP switching involves a change of SCS, the BWP switching delay may be determined by the smaller SCS between the SCS before the BWP switching and the SCS after the BWP switching (see 3GPP TS38.133, Chapter 8.6.2).

[0116] In this operation example, the prerequisite FG (Prerequisite FG) may be at least one of FG6-2 / 6-3 / 6-4 / 49-1 / 49-1b / 49-2 / 49-2b (see 3GPP TS38.306 and FIG. 8). The report format may be at least one of carrier type (FR1 / FR2-1 / FR2-2, licensed / unlicensed, TDD (Time Division Duplex) / FDD (Frequency Division Duplex)), band, BC (Band Combination), UE, FS (Feature Set), and FSPC (Feature Set Per CC).

[0117] According to the above-described operation example, when a UE reports its existing UE capability for BWP switching (at least one of FG (Feature Group) 6-2 / 6-3 / 6-4) and its UE capability for supporting DCI format 0_3 / 1_3 (at least one of FG49-1 / 1b / 2 / 2b), the network can interpret this as meaning that the UE supports BWP switching instructions in DCI format 0_3 / 1_3. The UE may also perform UE capability signaling to report whether it supports BWP switching / BWP adaptation in DCI format 0_3 / 1_3.

[0118] Therefore, the UE can report to the network whether it supports BWP-related features using DCI format 0_3 / 1_3, such as whether it supports BWP switching using DCI format 0_3 / 1_3, distinguishing it from BWP switching using the existing DCI format. This makes it possible to switch and adapt BWP using DCI format 0_3 / 1_3 appropriately according to the UE's capabilities.

[0119] (4) Other Embodiments The contents of the present proposal have been explained above using examples, but it will be obvious to those skilled in the art that the present proposal is not limited to these descriptions and that various modifications and improvements are possible.

[0120] For example, in the above-described embodiment, the terms "single DCI multi-slot PDSCH / PUSCH scheduling" and "single DCI multi-cell PDSCH / PUSCH scheduling" are used in the description, but these terms may be called by other names as long as they refer to a function of scheduling PDSCH / PUSCHs of multiple slots using one DCI or a function of scheduling PDSCHs / PUSCHs of multiple CCs using a single (one) DCI. Also, as described above, the channel is not limited to the PDSCH / PUSCH, and may include a control channel and / or other data channels.

[0121] Furthermore, the UE 200 may report the UE capability to a scheduling CC, or may report the UE capability to a scheduled CC, or may report the UE capability to a CC that transmits a PUCCH.

[0122] In the above-described embodiments, the terms scheduled cell and co-scheduled cell(s) are used in the description, where a scheduled cell means any one cell and co-scheduled cell(s) may be interpreted as meaning multiple cells that are scheduled simultaneously, but scheduled cell and co-scheduled cell(s) may be used interchangeably.

[0123] Also, in the above description, configure, activate, update, indicate, enable, specify, and select may be interchangeable. Similarly, link, associate, correspond, and map may be interchangeable, and allocate, assign, monitor, and map may be interchangeable.

[0124] Furthermore, specific, dedicated, UE-specific, and UE-dedicated may be interchangeable. Similarly, common, shared, group-common, UE-common, and UE-shared may be interchangeable.

[0125] The block diagram ( FIG. 4 ) used to explain the above-described embodiment shows functional blocks. These functional blocks (components) are realized by any combination of hardware and / or 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 connected directly or indirectly (e.g., via wire, wireless, etc.) and these multiple devices. The functional block may also be realized by combining software with the single device or multiple devices.

[0126] 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 each is implemented.

[0127] Furthermore, the above-described gNB100 and UE200 (the devices) may function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 10 is a diagram showing an example of the hardware configuration of the devices. As shown in Figure 10, the devices may be configured as a computer including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0128] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of the apparatus 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.

[0129] Each functional block of the device (see FIG. 4) is realized by any hardware element of the computer device or a combination of the hardware elements.

[0130] In addition, each function of the device is realized by loading specified software (programs) onto hardware such as processor 1001 and memory 1002, causing processor 1001 to perform calculations, control communication via communication device 1004, and control at least one of reading and writing data in memory 1002 and storage 1003.

[0131] The processor 1001 controls the entire computer by running, for example, an operating system, and may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control unit, an arithmetic unit, and registers.

[0132] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. Furthermore, the various processes described above may be executed by a single processor 1001, or may 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 be transmitted from a network via a telecommunications line.

[0133] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The memory 1002 may also be called a register, a cache, a main memory (primary storage device), etc. The memory 1002 may store a program (program code), a software module, etc., capable of executing a method according to an embodiment of the present disclosure.

[0134] Storage 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray disc), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic strip, etc. Storage 1003 may also be referred to as an auxiliary storage device. The above-mentioned recording medium may be, for example, a database, a server, or other suitable medium including at least one of memory 1002 and storage 1003.

[0135] 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 called, for example, a network device, a network controller, a network card, or a communication module.

[0136] The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize, for example, at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD).

[0137] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives 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).

[0138] Furthermore, each device such as the processor 1001 and the memory 1002 is connected to 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.

[0139] Furthermore, the device 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.

[0140] 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., 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.

[0141] Each aspect / embodiment described in the present disclosure may be applied to at least one of a system using Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, a 4th generation mobile communication system (4G), a 5th generation mobile communication system (5G), a 6th generation mobile communication system (6G), an xth generation mobile communication system (xG) (where x is, for example, an integer or a decimal), Future Radio Access (FRA), New Radio (NR), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable system, and a next-generation system extended based on these. Furthermore, a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G) may also be applied.

[0142] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed 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.

[0143] In the present disclosure, a specific operation described as being performed by a base station may also be performed by its upper node in some cases. In a network consisting of one or more network nodes having a base station, it is clear that various operations performed for communication with a terminal may be performed by at least one of the base station and another network node other than the base station (e.g., MME or S-GW, etc., but are not limited to these). Although the above example illustrates a case where there is one other network node other than the base station, a combination of multiple other network nodes (e.g., MME and S-GW) may also be used.

[0144] Information, signals (information, etc.) may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input and output via multiple network nodes.

[0145] The input and output information may be stored in a specific location (for example, a memory) or may be managed using a management table. The input and output information may be overwritten, updated, or added. The output information may be deleted. The input information may be transmitted to another device.

[0146] 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).

[0147] 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).

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0153] 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.

[0154] 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.

[0155] In this disclosure, terms such as "base station (BS)," "radio base station," "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. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0156] A base station can accommodate one or more (e.g., three) cells (also called sectors). When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head: RRH)).

[0157] 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 area.

[0158] 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.

[0159] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0160] 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.

[0161] 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 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 also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0162] Furthermore, a base station in the present disclosure may be read as a mobile station (user terminal, the same applies hereinafter). For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a mobile station is replaced with communication between multiple mobile stations (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the mobile station may be configured to have the functions of a base station. 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 (or sidelink).

[0163] Similarly, a mobile station in the present disclosure may be interpreted as a base station, in which case the base station may have the functions of a mobile station.

[0164] 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.

[0165] Numerology may be communication parameters that apply 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, and specific windowing operations performed by the transceiver in the time domain.

[0166] A slot may consist of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) A slot may be a numerology-based time unit.

[0167] A slot may include multiple minislots. Each minislot may consist of one or more 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.

[0168] 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.

[0169] For example, one subframe may be referred to as a transmission time interval (TTI), multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as 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 (e.g., 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.

[0170] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station schedules each user terminal to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) in TTI units. Note that the definition of TTI is not limited to this.

[0171] 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.

[0172] In addition, 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, and the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0173] A TTI having a time length of 1 ms may be referred to as 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 referred to as a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0174] 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 equal to or greater than 1 ms.

[0175] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.

[0176] The number of subcarriers included in an RB may be the same regardless of the numerology, and may be, for example, 12. The number of subcarriers included in an RB may also be determined based on the numerology.

[0177] 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, each of which may consist of one or more resource blocks.

[0178] 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.

[0179] 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.

[0180] A Bandwidth Part (BWP) (which may also be referred to as a fractional 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 given BWP and numbered within that BWP.

[0181] 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.

[0182] 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."

[0183] The above-described structures of the radio frame, subframe, slot, minislot, and symbol are merely examples. For example, 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, and other configurations may be changed in various ways.

[0184] 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.

[0185] The reference signal may also be abbreviated as Reference Signal (RS) and may be called a pilot depending on the applicable standard.

[0186] 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."

[0187] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0188] 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 therein or that the first element must precede the second element in some way.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] 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."

[0193] 11 shows an example of the configuration of a vehicle 2001. As shown in Fig. 11, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right 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.

[0194] The drive unit 2002 is composed of, for example, 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. The electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals from various sensors 2021 to 2027 provided in the vehicle are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0195] The signals from the various sensors 2021 to 2028 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels 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.

[0196] 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, etc., to provide various types of multimedia information and multimedia services to the occupants of the vehicle 1.

[0197] The information service unit 2012 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0198] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving burden, 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. The driving assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.

[0199] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 1 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from a driving unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, a microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2028, which are provided in the vehicle 2001.

[0200] 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.

[0201] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021 to 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 to 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.

[0202] 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. The information service unit 2012 may also 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, left and right front wheels 2007, left and right rear wheels 2008, axles 2009, sensors 2021 to 2028, and the like provided in the vehicle 2001.

[0203] (Additional Note) The above disclosure may be expressed as follows: A first feature is a terminal including: a receiver that receives single downlink control information instructing scheduling for a combination of multiple cells; and a controller that reports to a network whether or not the terminal supports switching or adaptation of bandwidth portions according to a format of the downlink control information, distinguishing it from a terminal capability indicating whether or not the terminal supports switching of bandwidth portions according to a format other than the format of the downlink control information.

[0204] A second feature is based on the first feature, wherein the control unit reports to the network that the terminal supports switching or adaptation of bandwidth portions according to the format of the downlink control information by reporting the terminal capability and the terminal capability regarding support of a format of the downlink control information.

[0205] A third feature is the first or second feature, wherein the control unit reports capability information indicating whether switching or adaptation of the bandwidth portion according to a format of the downlink control information is supported to the network.

[0206] 10 Wireless communication system 20 NG-RAN 100 gNB 200 UE 210 Wireless signal transceiver 220 Amplifier 230 Modulation / demodulation unit 240 Control signal / reference signal processing unit 250 Encoding / decoding unit 260 Data transceiver 270 Control unit 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Left and right front wheels 2008 Left and right rear wheels 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 RPM sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving assistance system section 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port

Claims

1. A terminal comprising: a receiving unit that receives a single downlink control information instructing scheduling for a combination of multiple cells; and a control unit that reports to a network whether or not it supports switching or adapting bandwidth portions according to the format of the downlink control information, distinguishing it from a terminal capability that indicates whether or not it supports switching bandwidth portions according to a format other than the format of the downlink control information.

2. The terminal according to claim 1, wherein the control unit reports to the network that it supports switching or adapting bandwidth portions according to the format of the downlink control information by reporting the terminal capability and the terminal capability regarding support of the format of the downlink control information.

3. The terminal according to claim 1, wherein the control unit reports capability information indicating whether switching or adaptation of the bandwidth portion according to the format of the downlink control information is supported to the network.

4. A wireless communication method in a terminal, comprising: a step of receiving single downlink control information instructing scheduling for a combination of multiple cells; and a step of reporting to a network whether or not the terminal supports switching or adapting bandwidth portions according to the format of the downlink control information, distinguishing it from a terminal capability indicating whether or not the terminal supports switching bandwidth portions according to a format other than the format of the downlink control information.

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