Terminal and wireless communication method

Abstract

This terminal: transmits and receives, within a specified time period based on time-division duplexing, a wireless signal in accordance with a scheme in which uplink sub-bands and downlink sub-bands are allocated in a non-overlapping manner in a frequency direction; and on the basis of known settings or signalling from a network, sets an arrangement pattern of the uplink sub-bands and the downlink sub-bands in the frequency direction. The terminal assumes a plurality of transition points in a single setting period and sets an arrangement pattern.

Description

Terminal and wireless communication method

[0001] The present disclosure relates to a terminal and a wireless communication method that supports XDD / SBFD.

[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] For example, 3GPP Release 18 is considering an extension of the duplex method (Non-Patent Document 1). Specifically, XDD (Cross Division Duplex) / SBFD (Sub-Band non-overlapping Full Duplex) are proposed as new duplexing methods that enable simultaneous use of the downlink (DL) and uplink (UL) within a carrier in a time division duplex (TDD) band.

[0004] For example, the operation of XDD / SBFD (hereinafter abbreviated as SBFD as appropriate) using a time division duplex (TDD) carrier (which may be interpreted as a component carrier (CC)) is planned to be studied (Non-Patent Document 2).

[0005] "Study on Evolution of NR Duplex Operation", RP-213591, 3GPP TSG RAN#94-e, 3GPP, December 2021 "RAN1 Chair's Notes", 3GPP TSG RAN WG1 #109-e, 3GPP, May 2022

[0006] When SBFD is applied, the locations of subbands (DL and / or UL) allocated in the frequency direction and time direction (which may also be referred to as the frequency domain and the time domain) may be transparent or non-transparent to a terminal (User Equipment, UE). If the locations of the subbands are non-transparent to the UE, the UE may not recognize the locations of the subbands according to SBFD and may not be able to perform normal operations in accordance with SBFD.

[0007] Therefore, the following disclosure has been made in consideration of this situation, and aims to provide a terminal and a wireless communication method that can achieve flexible subband configuration and normal operation in XDD / SBFD.

[0008] One aspect of the present disclosure is a terminal (UE200) that includes a communication unit (radio signal transceiver unit 210) that transmits and receives radio signals in accordance with a scheme in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time period based on time division duplexing, and a control unit (control unit 270) that sets an allocation pattern or position of the uplink subbands and the downlink subbands in the frequency direction based on a known setting or signaling from a network.

[0009] One aspect of the present disclosure is a terminal (UE200) including: a communication unit (radio signal transceiver 210) that transmits and receives radio signals according to a scheme in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time period based on time division duplex; a receiver (control signal / reference signal processor 240) that receives a setting instruction including a bitmap indicating the positions of the uplink subbands and the downlink subbands in the frequency direction; and a control unit (controller 270) that sets the positions of at least one of the uplink subbands and the downlink subbands in the frequency direction based on the bitmap.

[0010] One aspect of the present disclosure is a terminal (UE200) including: a communication unit (radio signal transceiver 210) that transmits and receives radio signals according to a scheme in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time period based on time division duplex; a receiving unit (control signal / reference signal processor 240) that receives a setting instruction including a time-direction arrangement pattern of the uplink subbands and the downlink subbands or a bitmap indicating their positions in the time direction; and a control unit (controller 270) that sets the time-direction positions of at least any of the uplink subbands and the downlink subbands based on the arrangement pattern or the bitmap.

[0011] One aspect of the present disclosure is a terminal (UE200) that includes a communication unit (radio signal transceiver unit 210) that transmits and receives radio signals according to a scheme in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time period based on time division duplexing, and a control unit (control unit 270) that sets the positions of at least one of the uplink subbands and the downlink subbands in the frequency direction and the time direction based on a combination of the frequency direction and the time direction and the presence or absence of a dynamic setting instruction.

[0012] One aspect of the present disclosure is a wireless communication method including the steps of: a terminal transmitting and receiving wireless signals according to a scheme in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time period based on time division duplex; and the terminal setting an allocation pattern or positions of the uplink subbands and the downlink subbands in the frequency direction based on a known setting or signaling from a network.

[0013] FIG. 1 is a diagram illustrating an overall schematic configuration of a wireless communication system 10. FIG. 2 is a diagram illustrating an example configuration of a radio frame, subframe, and slot used in the wireless communication system 10. FIG. 3 is a diagram illustrating an example configuration of TDD and XDD / SBFD. 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 subband pattern according to Operation Example 1-1 of the first embodiment. FIG. 6 is a diagram illustrating an example of a subband frequency allocation according to Operation Example 1-1 of the first embodiment. FIG. 7 is a diagram illustrating an example of a subband frequency allocation and guard band according to Operation Example 1-1 of the first embodiment. FIG. 8 is a diagram illustrating an example (part 1) of dynamic instruction using a bitmap according to Operation Example 1-2 of the first embodiment. FIG. 9 is a diagram illustrating an example (part 2) of dynamic instruction using a bitmap according to Operation Example 1-2 of the first embodiment. FIG. 10 is a diagram illustrating an example of a subband pattern according to Operation Example 2 of the first embodiment. FIG. 11 is a diagram illustrating an example of instruction using a bitmap according to Operation Example 2 of the first embodiment. FIG. 12 is a diagram illustrating a combination of a method of displaying SBFD time and frequency allocation according to Operation Example 3 of the first embodiment. FIG. 13 is a diagram showing an example of the combined use of SBFD operation and instruction according to Operation Example 4 of the first embodiment and an instruction by DCI 2_0. FIG. 14 is a diagram showing an example of the configuration of an SBFD symbol according to Operation Example 2, Option 1 (Example 1-1a) of the second embodiment. FIG. 15 is a diagram showing an example of the configuration of an SBFD symbol according to Operation Example 2, Option 2 of the second embodiment. FIG. 16 is a diagram showing an example of the configuration of a bitmap according to Operation Example 2, Option 3-1 of the second embodiment. FIG. 17 is a diagram showing an example of the configuration of an SBFD pattern according to Operation Example 2, Option 3-2 of the second embodiment. FIG. 18 is a diagram showing an example of the hardware configuration of the gNB 100 and the UE 200. FIG. 19 is a diagram showing an example of the configuration of a vehicle 2001.

[0014] 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.

[0015] (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 (hereinafter, UE 200, User Equipment, UE). Note that the wireless communication system 10 may also be a wireless communication system conforming to a scheme 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 gNB 100 is a 5G-compliant radio base station that performs 5G-compliant radio communication with the UE 200. The gNB 100 and the UE 200 are capable of supporting Massive MIMO (Multiple-Input Multiple-Output), which generates a more directional antenna beam (hereinafter referred to as beam BM) 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 two NG-RAN nodes.

[0019] The type of DC may be Multi-RAT Dual Connectivity (MR-DC), which uses multiple radio access technologies, or NR-NR Dual Connectivity (NR-DC), which 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 NR-E-UTRA Dual Connectivity (NE-DC), which is the reverse.

[0020] The gNB 100 can transmit multiple beams BM with different transmission directions (which may also be simply referred to as directions, or radiation directions, or coverages) in a space- and time-division manner. Note that the gNB 100 may transmit multiple beams BM simultaneously.

[0021] The wireless communication system 10 may also support multiple frequency ranges (FR). Specifically, the wireless communication system 10 may support the following frequency ranges:

[0022] ・FR1: 410 MHz to 7.125 GHz ・FR2-1: 24.25 GHz to 52.6 GHz FR1 may use a sub-carrier spacing (SCS) of 15, 30, or 60 kHz and a bandwidth (BW) of 5 to 100 MHz. FR2-1 is a higher frequency than FR1 and may use a sub-carrier spacing (SCS) of 60 or 120 kHz (including 240 kHz) and a bandwidth (BW) of 50 to 400 MHz.

[0023] Note that SCS may be interpreted as numerology, which is defined in 3GPP TS38.300 and corresponds to one subcarrier spacing in the frequency domain.

[0024] Furthermore, the wireless communication system 10 also supports a frequency band higher than the FR2-1 frequency band. Specifically, the wireless communication system 10 supports a frequency band exceeding 52.6 GHz up to 71 GHz. Such a high frequency band may be referred to as FR2-2.

[0025] When using bands above 52.6 GHz, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform - Spread (DFT-S-OFDM) with larger Sub-Carrier Spacing (SCS) may be applied.

[0026] Additionally, as mentioned above, in high frequency bands such as FR2-2, increased inter-carrier phase noise becomes an issue, which may necessitate the application of a larger (wider) SCS or a single-carrier waveform.

[0027] The larger the SCS, the shorter the symbol / cyclic prefix (CP) period and slot period (assuming a 14 symbol / slot configuration is maintained). Figure 2 shows an example of the configuration of radio frames, subframes, and slots used in the wireless communication system 10.

[0028] If the 14 symbols / slot configuration is maintained, the larger (wider) the SCS, the shorter the symbol period (and slot period). The time direction may be called the time domain, symbol period, symbol length, or symbol time. The frequency direction may be called the frequency domain, resource block, subcarrier, or BWP (Bandwidth part).

[0029] The frequency resources may include component carriers, subcarriers, resource blocks (RBs), resource block groups (RBGs), bandwidth parts (BWPs), etc. The time resources may include symbols, slots, minislots, subframes, radio frames, discontinuous reception (DRX) periods, etc.

[0030] The number of symbols constituting one slot does not necessarily have to be 14 (for example, 28 or 56 symbols). The number of slots per subframe may differ depending on the SCS.

[0031] The wireless communication system 10 may use an SSB (SS / PBCH Block) that is configured from a synchronization signal (SS) and a downlink physical broadcast channel (PBCH).

[0032] SSBs are transmitted periodically from the network mainly to allow UE 200 to detect cell IDs and reception timings when starting communication. In NR, SSBs are also used to measure the reception quality of each cell. The SSB transmission periodicity may be specified as 5, 10, 20, 40, 80, 160 milliseconds, etc. Note that the initial access UE 200 may assume a transmission period of 20 milliseconds.

[0033] Furthermore, multiple duplexing methods may be used in the wireless communication system 10. Specifically, time division duplexing (TDD) and frequency division duplexing (FDD) may be used. The duplexing method may be interpreted as a method for realizing simultaneous transmission and reception (duplex communication) of downlink (DL) and uplink (UL).

[0034] Furthermore, the wireless communication system 10 may use another duplexing method that enables simultaneous use of DL and UL, specifically, XDD (Cross Division Duplex) / SBFD (Sub-Band non-overlapping Full Duplex).

[0035] Figure 3 shows an example of the configuration of TDD and XDD / SBFD. As shown in Figure 3, in TDD defined in 3GPP Releases 15 to 17, DL, UL, or F (flexible: can be set to DL or UL) can be set for each symbol and instructed to UE 200.

[0036] On the other hand, in XDD / SBFD, which is being considered in 3GPP Release 18, gNB100 can instruct UE200 to configure specific frequency resources (e.g., subbands) as DL and other frequency resources as UL at a specified time T, such as a symbol.

[0037] XDD / SBFD allows simultaneous use of DL and UL within a carrier (CC) in the TDD band. Using the central portion of the frequency resources within the DL and UL carriers can avoid or mitigate potential cross-link interference (CLI) with adjacent carriers. XDD / SBFD may also be referred to as a type of full duplex, or FDD full duplex, or as sub-band (DL / UL) full duplex, as abbreviated as SBFD.

[0038] In SBFD, frequency resources for DL ​​(DL band) and frequency resources for UL (UL band) are allocated in a non-overlapping manner to the same duplex band on the same time period.

[0039] Specifically, XDD / SBFD is a scheme in which DL bands and UL bands are allocated non-overlappingly in the frequency direction within a specified time T based on time division duplex. The DL band may be interpreted as a DL subband, and the UL band may be interpreted as a UL subband. In the following, XDD / SBFD will be abbreviated simply as SBFD where appropriate.

[0040] (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.

[0041] 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.

[0042] 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. 18.

[0043] 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.

[0044] Furthermore, the radio signal transmitting / receiving unit 210 can transmit and receive radio signals according to SBFD, i.e., a method in which uplink subbands (UL subbands) and downlink subbands (DL subbands) are allocated non-overlappingly in the frequency direction within a specified time based on time division duplexing. In this embodiment, the radio signal transmitting / receiving unit 210 constitutes a communication unit. Of course, the radio signal transmitting / receiving unit 210 may also support duplexing methods such as TDD and FDD (Frequency Division Duplexing).

[0045] 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.

[0046] 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).

[0047] 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 .

[0048] 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.

[0049] 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).

[0050] DMRS is a terminal-specific reference signal (pilot signal) known between the base station and the terminal to estimate the fading channel used for data demodulation, while PTRS is a terminal-specific reference signal intended to estimate phase noise, which is an issue in high frequency bands.

[0051] 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.

[0052] The channels include a control channel and a data channel, and the control channel may include a PDCCH, a PUCCH (Physical Uplink Control Channel), a RACH (Random Access Channel, Downlink Control Information (DCI) including a Random Access Radio Network Temporary Identifier (RA-RNTI)), a Physical Broadcast Channel (PBCH), etc.

[0053] Furthermore, the data channel includes a PDSCH and a PUSCH (Physical Uplink Shared Channel), etc. Data may refer to data transmitted via a data channel.

[0054] The control signal and reference signal processor 240 may transmit capability information of the UE 200 to the network. The control signal and reference signal processor 240 may also receive information indicating the frequency direction positions of the UL subband and DL subband for SBFD. In this embodiment, the control signal and reference signal processor 240 constitutes a receiver.

[0055] The information is not particularly limited as long as it can indicate the positions of the UL subbands and / or DL ​​subbands in the frequency direction, but typically, a bitmap may be used. An example of setting the bitmap will be described later.

[0056] The control signal / reference signal processor 240 can receive a configuration instruction including such a bitmap. The configuration instruction may be signaling from a higher layer (e.g., RRC) or a lower layer (e.g., MAC-CE). Hereinafter, signaling from the network may include signaling from a higher layer or a lower layer.

[0057] Furthermore, the control signal and reference signal processor 240 may receive a setting instruction including a bitmap indicating the time-direction arrangement pattern or time-direction position of the UL subbands and DL subbands. The time-direction arrangement pattern may indicate a repetitive pattern or a consecutive pattern of the UL subbands or DL ​​subbands in the time direction. Examples of arrangement patterns will be described later.

[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 can execute control related to SBFD.

[0062] Specifically, the control unit 270 can determine the arrangement of the UL subbands and / or DL ​​subbands in the frequency direction and the arrangement of the UL subbands and / or DL ​​subbands in the time direction.

[0063] More specifically, the control unit 270 can set the frequency direction arrangement pattern or positions of the UL subbands and DL subbands based on a known setting or signaling from the network. The known setting may refer to an arrangement pattern or positions predefined by the 3GPP specifications. The known setting may be pre-configured in the UE 200 or may be rewritten periodically or irregularly.

[0064] The control unit 270 may set the positions of at least one of the UL subbands and the DL subbands in the frequency direction based on a bitmap indicating the positions of the UL subbands and the DL subbands in the frequency direction.

[0065] Furthermore, the control unit 270 may set the position in the time direction of at least one of the UL subbands and the DL subbands based on a bitmap indicating the arrangement pattern of the UL subbands and the DL subbands in the time direction or the position in the time direction.

[0066] Control unit 270 may set the positions of at least one of the UL subbands and DL subbands in the frequency direction based on the allocation patterns of the UL subbands and DL subbands in the frequency direction.

[0067] Alternatively, the control unit 270 may set the positions of at least one of the UL subbands and the DL subbands in the frequency direction and the time direction based on a combination of the frequency direction and the time direction and the presence or absence of a dynamic setting instruction. A dynamic setting instruction may be interpreted as the opposite of a static or semi-static setting instruction.

[0068] Furthermore, the control unit 270 may set the allocation pattern or positions of the UL subbands and DL subbands based on a setting instruction indicating the positions of the UL subbands and DL subbands in the frequency direction and / or the time direction and on Downlink Control Information (DCI). The type of DCI is not particularly limited, and for example, DCI Format 2_0 used to notify the UE 200 of the slot format may be used. The Slot Format Indication (SFI) may be transmitted using a normal PDCCH configuration that can be commonly applied to a group of UEs and an SFI-RNTI (Radio Network Temporary Identifier).

[0069] Furthermore, the control unit 270 may assume multiple transition points in a single configuration period and set the allocation pattern. Specifically, the control unit 270 may set the SBFD symbol position pattern based on multiple transition points in one TDD DL / UL configuration period.

[0070] More specifically, the control unit 270 may assume up to two transition points in the single configuration period (TDD DL / UL configuration period).

[0071] The control unit 270 may set the allocation pattern based on the start position and length in the time direction of the UL subband and / or DL ​​subband. Specifically, the control unit 270 may determine the position in the time direction where SBFD is applied based on the start position and length (e.g., the number of symbols) of consecutive SBFD symbols.

[0072] (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 related to allocation in the frequency direction and time direction of SBFD.

[0073] <First embodiment> (3.1) Assumptions and issues In the SBFD-related operations discussed in 3GPP Release 18, the SBFD time and frequency positions may be transparent (recognizable by the UE) or non-transparent (unrecognizable by the UE) to the UE. If the SBFD positions in the time direction and frequency direction are not transparent to the UE, it is necessary to clarify the time and frequency domain representations.

[0074] To date, methods have been proposed for showing the time and / or frequency allocation of SBFD, including a "one-level display using two-dimensional (time-frequency) display" and a "two-level display."

[0075] The "one-level indication with two-dimensional (time-frequency) indication" is a new signaling scheme that is independent of the traditional TDD pattern slot format indication. However, it may require a lot of signaling overhead, considering that the gNB needs to transmit the existing TDD pattern signal to legacy UEs and the new 2D slot configuration to SBFD-enabled UEs.

[0076] In the "two-level indication", there may be a first-level bitmap indicating "pure DL" (used only for DL), "pure UL" (used only for UL), or XDD slot / symbol, and a second-level bitmap indicating the DL / UL direction of each RB (set). However, the first-level bitmap must indicate the three statuses: "pure DL", "pure UL", and "XDD (SBFD)". This is also new signaling only for SBFD-capable UEs. The second-level bitmap may indicate DL or UL for each RB (set).

[0077] Here, indicating SBFD based on existing TDD patterns is considered to be effective in reducing signaling overhead and harmonizing with legacy UEs.Methods other than bitmaps can also be considered to indicate DL / UL frequency domain allocation.

[0078] So far, "partial + D / U" has been considered, whereby frequency resources are partially available. Specifically, it has been considered to indicate "partial availability" for each time unit. However, if the granularity of the "time unit" is defined as slot / minislot / symbol, a large overhead may be required for the bitmap indicating "partial availability" for each time unit.

[0079] So, one possible optimization would be to indicate SBFD operation (i.e. partial availability) only for a subset of slots / symbols, e.g., only for semi-static DL or flexible symbols, but furthermore, the signaling details indicating partially available frequency resources may not be taken into account, but the frequency domain indication details may.

[0080] It is considered necessary to study the details of static / quasi-static or dynamic display of time and frequency in SBFD. Also, for UEs with SBFD capability and DCI Format 2_0 (referred to as DCI 2_0) monitoring function, it is considered necessary to study the UE behavior when an SBFD operation instruction with SFI capability and DCI 2_0 are received simultaneously.

[0081] For example, if SBFD operation is applied to a quasi-static flexible slot / symbol, it is necessary to consider the UE behavior when it receives DCI 2_0 together with SFI indicating DL / UL / Flexible (F) for that slot / symbol.

[0082] Therefore, the following three issues will be considered below.

[0083] - (Issue 1): Taking into account the discussions so far, there are several possibilities for extension to show the allocation of time and frequency domains for SBFD.

[0084] Other methods for indicating SBFD frequency domain resource allocation other than bitmaps Other methods for indicating SBFD time domain position for each time unit other than bitmaps based on existing legacy TDD patterns (Issue 2): UE behavior considering semi-static or dynamic indication of time and frequency domains, respectively (Issue 3): Interaction between SBFD indication and DCI 2_0 indication

[0085] (3.2) Operational Overview The following operational example may include the following:

[0086] Operational example 1-1: Setting DL / UL subband patterns and frequency locations to set SBFD frequency resources In addition to the bitmap indication method of SBFD frequency domain resource allocation that has been studied so far, this is a method of indicating DL / UL subband allocation as a method of indicating SBFD frequency domain resource allocation. DL / UL subband allocation may be specified / defined from the following two perspectives:

[0087] - DL / UL subband pattern (i.e., number of DL and UL subbands) - DL / UL subband frequency allocation of subbands (i.e., location / size of DL / UL subbands) - Operational example 1-2: Setting using a bitmap to configure SBFD frequency resources A bitmap indicating DL / UL frequency domain allocation in XDD (or SBFD) time units is proposed. More details regarding the bitmap, for example, dynamic update instructions based on quasi-static instructions, are possible.

[0088] - Operation example 2: Extending the configuration method to reduce overhead for SBFD time direction resource configuration. In addition to the SBFD time domain position indication that has been considered so far, we propose an extended DL / UL subband time position indication that reduces signal transmission overhead.

[0089] ・Option A: DL / UL subband time resources are specified in the 3GPP specifications. ・Option B: DL / UL subband time resource patterns are set. ・Option C: DL / UL subband time resource bitmaps are set. In Option B, the periodicity and slot index for applying the DL / UL subband allocation pattern are set by RRC and dynamically indicated.

[0090] In Option C, the SBFD operation indication bitmap is configured by RRC and indicated in the DCI, and the bitmap indicates only certain slots / symbols (i.e., possible SBFD slots / symbols, e.g., quasi-static DL and / or flexible slots / symbols).

[0091] Operational example 3: Combining and setting SBFD frequency and time resources We propose possible UE behaviors that take into account combinations of SBFD time and frequency allocation indication methods.

[0092] ・Operation example 4: Expanding the SBFD settings and DCI 2_0 settings ・Option 1: The SBFD operation / display decision is independent from DCI 2_0.

[0093] ・Option 2: SBFD behavior / display is determined by DCI 2_0.

[0094] ・Option 3: DCI 2_0 overrides the display of SBFD.

[0095] In what follows, the following notation may be followed:

[0096] Semi-static DL slot / symbol: A slot / symbol configured as DL by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated. Semi-static UL slot / symbol: A slot / symbol configured as UL by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated. Semi-static flexible slot / symbol: A slot / symbol configured as flexible by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated. Dynamic DL slot / symbol: A slot / symbol configured flexibly by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated and indicated as DL by DCI 2_0. Dynamic UL slot / symbol: A slot / symbol configured flexibly by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated and indicated as UL by DCI 2_0. Dynamic Flexible Slots / Symbols: Slots / Symbols configured as flexible by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated and indicated as flexible by DCI 2_0

[0097] (3.3) Operational Example 1 (3.3.1) Operational Example 1-1 Fig. 5 shows an example of a subband pattern according to Operational Example 1-1. Fig. 6 shows an example of a subband frequency allocation according to Operational Example 1-1. In addition to the bitmap display method for SBFD frequency domain resource allocation proposed so far, one method for indicating SBFD frequency domain resource allocation is to indicate DL / UL subband allocation.

[0098] DL / UL subband allocation can be specified / defined from two perspectives:

[0099] - DL / UL subband pattern (i.e., number of DL and UL subbands) - DL / UL subband frequency allocation for subbands (i.e., location / size of DL / UL subbands) - (Alt-a): PRB (Physical Resource Block) start and PRB end - (Alt-b): Start / end / center PRB and subband size (i.e., number of PRBs) - (Variation): Set / define location / size for each subband or for part of the subband (e.g., only DL (or UL) subbands).

[0100] The "DL / UL subband frequency pattern" refers to the number of DL / UL subbands, such as "DUD," "UDU," "DU," etc. The "DL / UL subband frequency allocation" may refer to the location and subband size of each DL / UL subband, or the RB (set) allocation of DL and UL frequency resources.

[0101] Also, the details of the "DL / UL subband pattern (i.e., the number of DL and UL subbands)" indication may be as follows:

[0102] (Alt 1): DL / UL subband pattern is defined by the specification and / or configured by the RRC.

[0103] For example, three subbands are defined by the specification, with one UL subband and two non-adjacent UL subbands (ie, "DUD").

[0104] Alternatively, the RRC may configure the number of DL subbands and the number of UL subbands, or the specification defines possible values ​​for the number of DL / UL subbands or possible DL / UL subband patterns (e.g., possible pattern #1 is one DL subband and one UL subband, possible pattern #2 is two non-contiguous DL subbands and one UL subband in the middle, and possible pattern #3 is two non-contiguous UL subbands and one DL subband in the middle), and the RRC configures one of the specification-defined patterns.

[0105] As a variation, the RRC may configure multiple DL / UL subband allocation patterns defined in the specification, and different patterns may be applied to different symbols / slots / cases.

[0106] ・(Alt 2): DL / UL subband pattern is displayed dynamically.

[0107] For example, the specification may define or RRC may configure multiple DL / UL subband patterns, and the gNB may dynamically indicate one of the multiple patterns.

[0108] The details of the "DL / UL subband frequency allocation (i.e., DL / UL subband location / size)" indication may be as follows:

[0109] (Alt 1): DL / UL subband frequency allocation is defined by the specification and / or configured by the RRC.

[0110] For example, the start and end PRB indexes may be: The start and end PRB indexes may be configured by RRC; The start and end PRB indexes may be defined by specification.

[0111] For different BWP sizes and / or different SCSs and / or different frequency ranges and / or different TDD configuration patterns (e.g., DL to UL ratios), the starting PRB index and the ending PRB index for each subband or DL ​​(or UL) subband can be defined, respectively.

[0112] For example, the start, end, and center PRBs and the subband size (i.e., the number of PRBs) can be specified. The start, end, and center PRBs can be configured by RRC or defined by the specification. For the "DUD" pattern, the specification defines that the start PRB of the first DL subband is the start PRB of the BWP, and / or the end PRB of the second DL subband is the end PRB of the BWP, and / or the center PRB of the UL subband is the center PRB of the BWP. The PRB indices of the start, end, and center PRBs of each subband or DL ​​(or UL) subband can be configured.

[0113] The subband size (i.e., the number of PRBs) can be configured by the RRC or defined by a specification. For example, the RRC may configure a subband size for each subband, or may configure the same subband size for each UL (or DL) subband.

[0114] The subband size of each subband or UL / DL subband may be defined by a specification. For different BWP sizes, different SCSs, different frequency ranges, and / or different TDD configuration patterns (e.g., DL to UL ratios), the subband size of each subband or DL ​​(or UL) subband may be defined. For a BWP size Y1, the UL / DL subband size may be X1 RB, and for a BWP size Y2, the UL / DL subband size may be X2 RB, etc.

[0115] As a variation, the subband size can be the number of PRB groups / bundles (eg, X PRB groups / bundles containing one PRB group / bundle containing Y PRBs) to reduce signaling overhead.

[0116] (Alt 2): DL / UL subband frequency allocation is dynamic.

[0117] For example, the specification defines and / or RRC configures one DL / UL subband pattern for SBFD and corresponding DL / UL subband frequency allocations, and the gNB can dynamically indicate a different DL / UL subband frequency allocation to override the defined or RRC configured subband frequency allocation.

[0118] As a variation, the UE may not expect a RB (set) to be indicated in the UL / DL subbands by dynamic indication if it is included in the DL / UL subbands according to a predefined or RRC configured DL / UL subband frequency allocation.

[0119] The specification may define or RRC may configure one DL / UL subband pattern for SBFD, and the gNB may dynamically indicate the DL / UL subband frequency allocation for SBFD.

[0120] The specification may define one DL / UL subband pattern for SBFD operation and multiple DL / UL subband frequency allocations for SBFD, or the RRC may configure and the gNB may dynamically indicate one of the multiple DL / UL subband frequency allocations.

[0121] The specification may define one DL / UL subband pattern and corresponding DL / UL subband frequency allocation or configure it via RRC. The gNB may dynamically indicate whether the DL / UL subband pattern / allocation applies.

[0122] The specification may define or RRC may configure multiple DL / UL subband patterns, and the gNB may dynamically indicate one of the multiple patterns to indicate the DL / UL subband frequency allocation for SBFD.

[0123] The specification may define or the RRC may configure multiple DL / UL subband patterns and DL / UL subband frequency allocations corresponding to each DL / UL subband pattern, and the gNB may dynamically indicate one of the multiple patterns.

[0124] The specification may define or the RRC may configure multiple DL / UL subband patterns and multiple DL / UL subband frequency allocations, and the gNB may dynamically indicate one of the multiple patterns and one of the DL / UL subband frequency allocations.

[0125] As a variation, the position / size can be set / defined for each subband or for a portion of the subbands (for example, only DL (or UL) subbands).

[0126] 7 shows an example of subband frequency allocation and guard bands according to Operation Example 1-1. When the location is defined / configured only for DL ​​(or UL) subbands, the locations / sizes of the remaining UL (or DL) subbands can be obtained based on the guard band size between adjacent DL and UL subbands. The guard band size can be defined by specifications or configured by RRC.

[0127] For example, in a "DUD" subband frequency pattern, when the start PRB and end PRB of a UL subband are set or defined (or the start / end / center PRB and subband size of a UL subband are set or defined), the start / end / subband sizes of the two DL subbands can be obtained as the remaining two non-contiguous subbands within the edges, excluding the guard band size.

[0128] (3.3.2) Operation Example 1-2 So far, a bitmap indicating DL / UL frequency domain allocation for XDD (or SBFD) time unit has been proposed.

[0129] Fig. 8 shows an example (part 1) of dynamic instruction using a bitmap according to the operation example 1-2, and Fig. 9 shows an example (part 2) of dynamic instruction using a bitmap according to the operation example 1-2.

[0130] Regarding the indication bitmap, it is conceivable to enable, for example, a dynamic update indication based on a semi-static indication. In addition to the DL or UL indication, the bitmap for the frequency domain DL / UL indication may also indicate "flexible" (e.g., to allow a dynamic indication to override "flexible") or "GB" (e.g., to reserve as a guard band).

[0131] So far, semi-static or dynamic indication of bitmaps has been proposed. More examples of combined operation of semi-static and dynamic methods can be proposed. For example, a specification may define multiple frequency domain allocation bitmaps, or RRC may configure them, and the gNB may dynamically indicate one of the multiple bitmaps. Note that such operation is similar to the SFI value in DCI 2_0, and may indicate one entry in the slot format table defined for SFI indication as specified in 3GPP TS 38.213.

[0132] If a predefined DL / UL subband frequency allocation or an RRC configured DL / UL subband frequency allocation is used, the dynamically indicated DL / UL subband frequency allocation may override the predefined DL / UL subband frequency allocation or the RRC configured DL / UL subband frequency allocation.

[0133] As a variation, the UE may not expect an RB(s) to be indicated as UL / DL (or "flexible", "GB") by a dynamic indication if it is indicated as DL / UL by a predefined DL / UL subband frequency allocation or a DL / UL subband frequency allocation configured by RRC. Such behavior is similar to how an SFI indication can override a semi-static TDD pattern, but may not be able to override the semi-static DL or UL in the other direction (i.e., it can only override semi-static flexible).

[0134] In such an example, the dynamic indication can be via DCI or MAC CE. For DCI, it can be a new DCI format (UE-specific DCI or group-common or multicast DCI) or an existing DCI format (e.g., DCI 2_0). For existing DCI, it can be a new RNTI or an existing RNTI, or a UE-specific DCI format, group-common DCI format, or multicast DCI format can be used.

[0135] For example, DCI 2_0 may be reused to indicate DL / UL subband frequency resource allocation, regardless of whether the SBFD frequency resource allocation field present in DCI 2_0 can be RRC configured.

[0136] For MAC CE: A new MAC CE LCID (Logical Channel ID) or an existing MAC CE LCID may be used.

[0137] (3.4) Operational Example 2 In addition to the SBFD time domain positioning method proposed so far for indicating partial availability for each time unit, an enhanced DL / UL subband time positioning method with reduced signaling overhead can be considered. Figure 10 shows an example of a subband pattern according to Operational Example 2.

[0138] Specifically, the following options are possible:

[0139] (Option A): DL / UL subband time position is defined by the specification.

[0140] The specification may define that the defined / indicated DL / UL subband frequency pattern (see Operational Example 1) applies to all slots / symbols, specific symbols / slots under the following conditions:

[0141] - Non-SSB slots / symbols (and / or CORESET#0 symbols / slots indicated by SSB) - Slots / symbols with (without) a PDCCH monitoring occasion for a specific search space type - Slots / symbols indicated (not indicated) as UL (and / or DL ​​and / or flexible) by tdd-UL-DL-ConfigurationCommon and / or tdd-UL-DL-ConfigurationDedicated - Slots / symbols indicated (not indicated) as UL (and / or DL ​​and / or flexible) by DCI 2_0 - Slots / symbols with any / each RB set indicated as available / unavailable by the available RB set indicator field of DCI format 2_0 - Slots / symbols where RACH is enabled As a variation, if multiple DL / UL frequency resource allocations are defined or indicated by the specification (see Operational Example 1), the specification may define the applicable slots for each DL / UL frequency resource allocation. For example, DL / UL frequency resource allocation #1 for slots / symbols indicated by the DL by tdd-UL-DL-ConfigurationCommon and / or tdd-UL-DL-ConfigurationDedicated, and DL / UL frequency resource allocation #2 for slots / symbols indicated by the UL by tdd-UL-DL-ConfigurationCommon and / or tdd-UL-DL-ConfigurationDedicated.

[0142] (Option B): The periodicity of one cycle and the slot index for applying the DL / UL subband allocation pattern are configured and dynamically indicated by RRC. Fig. 11 shows an example of indication by a bitmap according to the second operation example.

[0143] As a variation, if multiple DL / UL subband frequency patterns are defined in the specification or configured by the RRC, the RRC configuration may also indicate the DL / UL frequency allocation pattern index per slot index. The specification may also define the periodicity with which the DL / UL subband allocation patterns are applied.

[0144] (Option C): The SBFD operation indication bitmap is a bitmap indication of only certain slots / symbols (i.e., possible SBFD slots / symbols, e.g., quasi-static DL and / or flexible slots / symbols) and is configured by RRC and / or indicated by DCI.

[0145] This is based on the assumption that the specification defines certain slots / symbols that are not applicable to SBFD operation, e.g., quasi-static UL slots / symbols.

[0146] The reference SCS of the bitmap may be the SCS of the current / active BWP or the minimum / maximum SCS value of the DL / UL BWP on the serving cell.

[0147] The bitmap may be applied periodically with a periodicity equal to or greater than that of the TDD pattern. The bitmap may be always applied after configuration, or a separate RRC parameter may be used to enable or disable the application of the bitmap.

[0148] As a variation, if multiple DL / UL subband allocation patterns are defined or configured, the bitmap may indicate the DL / UL subband allocation pattern that applies to a slot / symbol (or group of slots / symbols).

[0149] That is, a slot / symbol (or group of slots / symbols) can have multiple bits, e.g., a value "00" indicating no SBFD operation for the slot / symbol (or group of slots / symbols), a value "01" indicating DL / UL subband allocation pattern #1 for the slot / symbol (or group of slots / symbols), a value "01" indicating DL / UL subband allocation pattern #1 for the slot / symbol (or group of slots / symbols), etc.

[0150] As a variation, the RRC may configure multiple bitmaps, and one of the multiple bitmaps may be indicated by the dynamic indication.

[0151] Furthermore, as a variation of the dynamic indication of Option B / Option C, DCI or MAC CE may be used. In the case of DCI, a new DCI format (UE-specific DCI or group-common or multicast DCI) or an existing DCI format (a new RNTI or an existing RNTI can be used) may be used. Also, a UE-specific DCI format, a group-common DCI format, or a multicast DCI format may be used.

[0152] For example, DCI 2_0 may be reused to indicate SBFD time domain location allocation and indicate whether the SBFD time location indication field present in DCI 2_0 can be configured by RRC.

[0153] For MAC CE: A new MAC CE LCID or an existing MAC CE LCID may be used.

[0154] (3.5) Operation Example 3 There are four possible combinations of display methods for SBFD time and frequency allocation. Fig. 12 shows combinations of display methods for SBFD time and frequency allocation according to Operation Example 3.

[0155] This example is applicable not only to the SBFD time and frequency allocation indication method according to this example, but also to other indication methods. In other words, this example focuses only on static / quasi-static or dynamic aspects. Other aspects (e.g., bitmap method, subband indication method, or other types of indication methods) are not covered by this example.

[0156] (Case 1): Predefined or semi-statically configured SBFD frequency domain allocation and predefined or semi-statically configured SBFD time domain location) The UE may apply the predefined or semi-statically indicated SBFD frequency domain resource allocation to the predefined or semi-statically indicated SBFD slots / symbols.

[0157] (Case 2): Predefined or semi-statically configured SBFD frequency domain allocation + dynamically indicated SBFD time domain location) The UE may apply the predefined or semi-statically indicated SBFD frequency domain resource allocation to the dynamically indicated SBFD slots / symbols. If the UE does not detect / receive a dynamic indication of the SBFD time domain location, one of the following may apply:

[0158] (Alt 1): The UE does not apply SBFD frequency domain resource allocation to the slot / symbol.

[0159] (Alt 2): Default SBFD time domain allocation is defined or configured by RRC, i.e. the UE applies SBFD frequency domain resource allocation to predefined or semi-statically specified SBFD slots / symbols.

[0160] (Case 3): Dynamically indicated SBFD frequency domain allocation and predefined or quasi-statically configured SBFD time domain location The UE may apply the dynamically indicated SBFD frequency domain resource allocation to the predefined or quasi-statically indicated slots / symbols. If the UE does not detect / receive a dynamic indication of the SBFD frequency domain resource allocation, one of the following may apply:

[0161] (Alt 1): The UE may ignore the semi-static configuration or pre-definition, i.e. the UE does not apply SBFD operations to the slot / symbl.

[0162] (Alt 2): Default SBFD frequency domain resource allocation is predefined or configured by RRC, i.e. the UE applies the predefined or semi-statically configured SBFD frequency domain resource allocation for the indicated SBFD slot / symbol.

[0163] (Case 4): Dynamically Indicated SBFD Frequency Domain Allocation and Predefined or Dynamically Indicated SBFD Time Domain Location) The UE may apply the dynamically indicated SBFD frequency domain resource allocation to the dynamically indicated SBFD slot / symbol. If the UE does not detect / receive a dynamic indication of the SBFD frequency domain resource allocation and the UE does not detect / receive a dynamic indication of the SBFD time domain location, one of the following may apply:

[0164] (Alt 1): The UE does not apply SBFD operation.

[0165] (Alt 2): The default SBFD frequency domain resource allocation and the default SBFD time domain location are predefined and / or configured by RRC. The UE applies the predefined and / or semi-statically indicated SBFD frequency domain resource allocation to the predefined and / or semi-statically indicated SBFD slots / symbols.

[0166] If the UE does not detect / receive a dynamic indication of SBFD frequency domain resource allocation, and the UE detects / receives a dynamic indication of SBFD time domain location, one of the following may apply.

[0167] (Alt 1): The UE does not apply SBFD operation.

[0168] (Alt 2): Default SBFD frequency domain resource allocation is predefined and / or configured by RRC. The UE applies the predefined and / or semi-statically indicated SBFD frequency domain resource allocation to the dynamically indicated SBFD slots / symbols.

[0169] If the UE detects / receives a dynamic indication of SBFD frequency domain resource allocation, and the UE does not detect / receive a dynamic indication of SBFD time domain location, one of the following may apply.

[0170] (Alt 1): The UE does not apply SBFD operation.

[0171] (Alt 2): The default SBFD time domain location is predefined or configured by RRC. The UE applies dynamically directed SBFD frequency domain resource allocation to predefined and / or semi-statically directed SBFD slots / symbols.

[0172] (3.6) Operation Example 4 Fig. 13 shows an example of combined use of SBFD operation / instruction and instruction by DCI 2_0 according to Operation Example 4. The following options may be applied to combined use of SBFD operation / instruction and instruction by DCI 2_0.

[0173] - (Option 1): The SBFD operation / instruction decision is independent of DCI 2_0.

[0174] Regardless of whether the UE detects DCI 2_0 and the SFI indication of DCI 2_0, the UE determines the SBFD frequency domain resource allocation and time domain allocation (for example, operation examples 1 and 2).

[0175] (Option 1-1): The UE ignores the SFI indicated by the DCI. That is, the indication of the SFI in DCI 2_0 does not affect the UE's operation. This may mean that if the UE applies SBFD operation, the value / direction indicated by the SFI does not work for SBFD and non-SBFD slots / symbols.

[0176] As a variation, the UE may ignore the SFI indicated by DCI 2_0 in SBFD symbols / slots, which may mean that if the UE applies SBFD operation, the SFI indication value / direction does not operate in SBFD slots / symbols but does operate in non-SBFD slots / symbols.

[0177] As another variation, the UE may not expect an SFI indicating DL / flexible (or UL / flexible) in a non-SBFD slot / symbol if the slot / symbol is a quasi-static UL (or DL) slot / symbol.

[0178] (Option 1-2): The SFI indication in DCI 2_0 indicates the DL or UL direction of the SBFD slot / symbol.

[0179] The SFI may indicate whether the UE can use the DL or UL subband in the SBFD symbol / slot. For example, for a quasi-static DL (or UL) slot / symbol in SBFD operation, if DCI 2_0 indicates UL / DL for that slot / symbol, the UE may use only the UL / DL subband for that slot / symbol.

[0180] It should be noted that in 3GPP Release 15 / 16 / 17, DCI 2_0 indicating "UL" for quasi-static DL slots / symbols is an error case.

[0181] If the specification defines and / or the RRC configuration and / or the dynamic indication indicates an SBFD frequency domain resource allocation to be applied to a slot / symbol (e.g., semi-static flexible slot / symbol), when the UE detects DCI format 2_0 indicating that the slot / symbol is "DL" (or "UL"), the UE may determine that it can use the DL (or UL) subband on the symbol / slot, i.e., it cannot use the UL (or DL) subband on the symbol / slot.

[0182] As a variation, even if a slot / symbol is indicated as DL / UL in DCI 2_0, the UE may not expect to detect DCI scheduling DL / UL reception / transmission on the UL / DL subbands of the symbol. If the UE detects DCI format 2_0 indicating that the slot / symbol is "flexible," the UE may determine that both DL (or UL) subbands on the symbol / slot are usable. The UE may also determine that neither the UL nor the DL subbands on the symbol / slot are usable.

[0183] If the UE is configured to monitor DCI 2_0 but does not detect DCI 2_0, the UE may consider that the DL or UL subbands may be used as proposed in this section. The UE may consider the DL and UL subbands unusable.

[0184] ・(Option 2): The SBFD operation / display decision depends on DCI 2_0.

[0185] The SFI indication and / or available RB set indication in DCI format 2_0 may affect the SBFD time position. That is, although the SBFD indications in operation examples 1 to 3 indicate the SBFD operation to be applied to a slot / symbol, the UE may determine the slot / symbol as non-SBFD based on the SFI indication and / or available RB set indication in DCI format 2_0.

[0186] If the specification defines and / or the RRC configuration and / or dynamic indication indicates an SBFD frequency domain resource allocation that applies to a slot / symbol (e.g., quasi-static flexible / DL / UL slot / symbol), as in operation examples 1 to 3, when the UE detects DCI 2_0 indicating that the slot / symbol is "UL" (or "DL", "flexible"), it may determine that the slot / symbol is a non-SBFD "UL" (or "DL") slot / symbol, i.e., an SBFD frequency domain resource allocation that does not apply to the slot / symbol.

[0187] When the UE detects DCI 2_0 indicating that a slot / symbol is "DL" (or "UL", "flexible"), it may determine that the slot / symbol is an SBFD slot / symbol, i.e., an SBFD frequency domain resource allocation that applies to the slot / symbol. This may mean that the UE can detect DCI scheduled UL transmissions in the UL subband on a slot / symbol even if DCI 2_0 indicates that the symbol is "DL" (or "UL" / "flexible") (a difference in behavior compared to legacy UEs).

[0188] When the UE detects DCI 2_0, which indicates that the slot / symbol is "flexible", it may determine that the slot / symbol cannot be used for either DL or UL.

[0189] If the UE is configured to monitor DCI 2_0 but does not detect DCI 2_0, the UE may determine an SBFD frequency-domain resource allocation applicable to the slot / symbol. The UE may determine an SBFD frequency-domain resource allocation that does not apply to the slot / symbol.

[0190] As a variation, the UE may or may not expect an SFI indicating DL / flexible (or UL / flexible) in a non-SBFD (and / or SBFD) slot / symbol if the slot / symbol is a quasi-static UL (or DL) slot / symbol.

[0191] ・(Option 3): DCI 2_0 overrides the display of SBFD.

[0192] For example, if the UE is configured to monitor DCI 2_0, the UE will prioritize DCI 2_0 and SBFD will not be applied.

[0193] As a variation, the UE may not expect to detect DCI 2_0 indicating a symbol / slot as "UL" (or "DL", "flexible") if the symbol / slot is configured / indicated as an SBFD slot (i.e., indicates / configures that DL / UL subband frequency allocation applies to the slot / symbol).

[0194] In other variations, joint operation may not be supported. For example, a UE may not be expected to be configured / indicated for SBFD operation and configured to simultaneously monitor DCI 2_0 (with SFI). SBFD operation for UE reporting need not be configured to monitor DCI 2_0 (with SFI). SBFD operation for UE reporting may not be expected to report the capability to monitor DCI 2_0 (with SFI).

[0195] (3.7) Modification Examples In operation examples 1 to 4, "configured by RRC" can be replaced with "configured by RRC and / or indicated by SIB 1". "Configured by RRC" can be replaced with "configured by RRC and / or indicated by SIB 1".

[0196] The related configuration may be configured by higher layer parameters, reported by the UE as UE capabilities, or defined in 3GPP specifications. It may also be determined by a combination of the higher layer parameter configuration and the reported UE capabilities.

[0197] For UE reporting of SBFD operation, the DL / UL subband allocation for SBFD operation may be defined by the specification or configured by the RRC. As a variation, dynamic TDD UE capability (e.g., dynamic SFI monitoring) may be a prerequisite for SBFD operation.

[0198] (3.8) UE Capabilities With regard to the above-mentioned SBFD, the following UE capabilities may be supported:

[0199] - Whether the UE supports SBFD operation with a predefined DL / UL subband pattern - Whether the UE supports SBFD operation with DL / UL subband allocation configured by RRC - Whether the UE supports SBFD operation with DL / UL subband allocation indicated by a dynamic indication - Whether the UE supports SBFD operation by monitoring a specific DCI type to indicate DL / UL subband allocation - Whether the UE supports monitoring DCI 2_0, which indicates DL / UL subband allocation for SBFD - Whether the UE supports SBFD operation with a predefined SBFD time domain location - Whether the UE supports SBFD operation using an SBFD time domain location configured by RRC - Whether the UE supports SBFD operation with an SBFD time domain location indicated by a dynamic indication - Whether the UE supports SBFD operation by monitoring a specific DCI type to indicate SBFD time domain location - Whether the UE supports monitoring DCI 2_0, which indicates SBFD time domain location - Whether the UE supports SBFD operation and monitoring DCI 2_0 (with SFI) simultaneously According to the above-mentioned embodiments, the following effects can be obtained. Specifically, UE 200 supports XDD / SBFD and can set the frequency direction allocation pattern or positions of UL subbands and DL subbands based on known settings or signaling from the network. Also, UE 200 can set at least one of the time direction positions of UL subbands and DL subbands based on a bitmap indicating the time direction allocation pattern or time direction positions of UL subbands and DL subbands. Furthermore, UE 200 can also set at least one of the frequency direction and time direction positions of UL subbands and DL subbands based on a combination of the frequency direction and time direction and the presence or absence of a dynamic configuration instruction.

[0200] Therefore, if the subband position is non-transparent to the UE 200, the UE 200 may not be able to recognize the subband position according to SBFD and may not be able to perform normal operation according to SBFD, thereby realizing flexible subband configuration and normal operation in XDD / SBFD.

[0201] <Second embodiment> (3.9) Premise and issues In the first embodiment described above, operational examples relating to displaying and determining the positions of the SBFD subbands in the time domain and frequency domain were described. However, in operational examples 1-2 and 2, the positions of the SBFD in the time domain are displayed semi-statically or dynamically.

[0202] In this embodiment, possible positions for setting SBFD symbols in one display period are proposed based on a maximum of two transition points between SBFD symbols and non-SBFD symbols in one TDD period.

[0203] We also propose signaling details to indicate SBFD symbols with a quasi-static indication based on up to two transition points between SBFD and non-SBFD symbols in one TDD period.

[0204] For clarity, the terms used in this embodiment are defined as follows:

[0205] SBFD operation cell: When the time and frequency locations of the SBFD subbands are configured in a serving cell, the cell may be called an SBFD operation cell.

[0206] Half-duplex CA serving cell: A set of serving cells for which directionalCollisionHandling-r16='enabled' is provided to the UE among the configured serving cells, if the UE indicates support for half-duplex TDD-CA-SameSCS-r16 capability. Quasi-SFI (Slot Format Indication) D (or Quasi-Static D) symbol: A symbol indicated as DL by TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigDedicated. Quasi-SFI U (or Quasi-Static U) symbol: A symbol indicated as UL by TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigDedicated. Quasi-SFI F (or Quasi-Static F) symbol: A symbol indicated as flexible by TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigDedicated. SBFD DL symbol: A symbol indicated as DL by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated, and for which the SBFD UL subband is configured. SBFD Flexible Symbol: A symbol indicated as flexible by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated and with the SBFD UL subband configured on the symbol

[0207] (3.10) Overview of Operation This embodiment includes the following operation examples.

[0208] (Operation Example 1): Determine the supported SBFD symbol position pattern based on the premise that there are a maximum of two transition points within one TDD DL / UL configuration period.

[0209] (Operation example 2): SBFD time domain position indication (Operation example 2-1): SBFD time domain position indication signaling (Operation example 2-2): SBFD sub-band time position indication configuration in the case of two TDD configuration patterns

[0210] (3.11) Operation Example 1 In this operation example, it may be assumed that there are a maximum of two transition points between SBFD symbols and non-SBFD symbols in one period. The "period" here may be interpreted as representing the period of the TDD DL / UL config pattern or the period of the SBFD time indication pattern.

[0211] The SBFD subbands can be configured as a set of one or two consecutive symbols in one period. For TDD configuration patterns (such as "DFU" / "DSU" / "DU" / "FU") that include UL symbols in a TDD period, the following SBFD time position patterns may be supported:

[0212] (Example 1-1): The SBFD subband consists of a series of consecutive slots / symbols. The set of slots / symbols may be the first slot / symbol of the period.

[0213] (Example 1-2): The SBFD subband consists of a series of consecutive slots / symbols. The set of slots / symbols may occur in the middle of the period (DL or flexible symbol).

[0214] (Example 1-3): The SBFD subband consists of a series of consecutive slots / symbols. The set of slots / symbols may be the last slot / symbol before the UL slot / symbol of the period.

[0215] In Example 1-1, there is only one transition point between SBFD symbols and non-SBFD symbols within one period. In Examples 1-2 and 1-3, there are two transition points between SBFD symbols and non-SBFD symbols within one period. In TDD configuration patterns that do not include a UL symbol within a period, such as all D, F, or DF, the following SBFD time position patterns may be supported.

[0216] (Example 2-1): The SBFD subband consists of a series of consecutive slots / symbols, where the series of slots / symbols may be the first slot / symbol in a period.

[0217] (Example 2-2): The SBFD subband consists of a series of consecutive slots / symbols, where the series of slots / symbols may be the last slot / symbol in a period.

[0218] (Example 2-3): The SBFD subband consists of two sets of consecutive symbols: the first set is the first consecutive slot / symbol, and the second SBFD symbol set is the last consecutive symbols in the period.

[0219] (Example 2-4): The SBFD subband consists of a series of consecutive slots / symbols, where the series of slots / symbols may occur in the middle of a period (either DL or flexible symbols within the period).

[0220] In Examples 2-1 and 2-2, there is only one transition point between SBFD symbols and non-SBFD symbols within one period. In Examples 2-3 and 2-4, there are two transition points between SBFD symbols and non-SBFD symbols within one period.

[0221] Furthermore, the following patterns may be set: Note that, hereinafter, the TDD pattern: D+F+U may mean that one TDD configuration period includes DL, UL, and flexible symbols according to the TDD configuration pattern.

[0222] Also, for example, non-SBFD DL -> SBFD DL -> non-SBFD DL -> non-SBFD F -> U may mean that the configured SBFD DL symbol is present after the non-SBFD DL symbol and before the non-SBFD DL symbol in the TDD pattern period. Similar interpretations may be applied to other pattern examples.

[0223] (Example A): For TDD DL / UL configuration pattern: D+F+U, all or only some of the SBFD symbol pattern examples may be supported.

[0224] ・Pattern A-1: ​​Non-SBFD DL -> SBFD DL -> non-SBFD DL -> non-SBFD F -> U ・Pattern A-2: Non-SBFD DL -> SBFD DL -> non-SBFD F -> U ・Pattern A-3: SBFD DL -> non-SBFD DL -> non-SBFD F -> U ・Pattern A-4: SBFD DL -> non-SBFD F -> U ・Pattern A-5: Non-SBFD DL -> non-SBFD F -> SBFD F -> non-SBFD F -> U ・Pattern A-6: Non-SBFD DL -> non-SBFD F -> SBFD F -> U ・Pattern A-7: Non-SBFD DL -> SBFD F -> non-SBFD F -> U ・Pattern A-8: Non-SBFD DL -> SBFD F -> U ・Pattern A-9: Non-SBFD DL -> SBFD DL -> SBFD F -> non-SBFD F -> U Pattern A-10: Non-SBFD DL -> SBFD DL -> SBFD F -> U Pattern A-11: SBFD DL -> SBFD F -> U Pattern A-12: SBFD DL -> SBFD F -> non-SBFD F -> U In Patterns A-3 / A-4 / A-11 / A-12, there is only one transition point between SBFD symbols and non-SBFD symbols in one period. In the other patterns, there are two transition points between SBFD symbols and non-SBFD symbols in one period.

[0225] (Example B): TDD DL / UL configuration pattern: In the case of D+U, all or only some of the examples of SBFD symbol patterns may be supported.

[0226] ・Pattern B-1: Non-SBFD DL -> SBFD DL -> UL ・Pattern B-2: Non-SBFD DL -> SBFD DL -> non-SBFD DL -> UL ・Pattern B-3: SBFD DL -> UL ・Pattern B-4: SBFD DL -> non-SBFD DL -> UL In Patterns B-3 / B-4, there is only one transition point between SBFD symbols and non-SBFD symbols in one period. In the other patterns, there are two transition points between SBFD symbols and non-SBFD symbols in one period.

[0227] (Example C): TDD DL / UL configuration pattern: In the case of D+F, all or only some of the SBFD symbol pattern examples may be supported.

[0228] ・Pattern C-1: SBFD DL -> non-SBFD DL -> non-SBFD F ・Pattern C-2: SBFD DL -> non-SBFD F ・Pattern C-3: non-SBFD DL -> SBFD DL -> non-SBFD DL -> non-SBFD F ・Pattern C-4: non-SBFD DL -> SBFD DL -> non-SBFD F ・Pattern C-5: non-SBFD DL -> non-SBFD F -> SBFD F ・Pattern C-6: non-SBFD DL -> SBFD F ・Pattern C-7: non-SBFD DL -> non-SBFD F -> SBFD F -> non-SBFD F ・Pattern C-8: non-SBFD DL -> SBFD F -> non-SBFD F ・Pattern C-9: non-SBFD DL -> SBFD DL -> SBFD F・Pattern C-10: non-SBFD DL -> SBFD DL -> SBFD F -> non-SBFD F ・Pattern C-11: SBFD DL -> SBFD F -> non-SBFD F ・Pattern C-12: SBFD DL -> non-SBFD DL -> non-SBFD F -> SBFD F ・Pattern C-13: SBFD DL -> non-SBFD DL -> SBFD F ・Pattern C-14: SBFD DL -> non-SBFD F -> SBFD F ・Pattern C-15: SBFD DL -> SBFD F In Patterns C-1 / C-2 / C-5 / C-6 / C-9 / C-11, there is only one transition point between SBFD symbols and non-SBFD symbols. In the other patterns, there are two transition points between SBFD symbols and non-SBFD symbols in one period.

[0229] (Example D): TDD DL / UL configuration pattern: For F+U, all or only some of the SBFD symbol pattern examples may be supported.

[0230] ・Pattern D-1: non-SBFD F -> SBFD F -> non-SBFD F -> U ・Pattern D-2: non-SBFD F -> SBFD F -> U ・Pattern D-3: SBFD F -> non-SBFD F -> U ・Pattern D-4: SBFD F -> U In the Pattern D-3 / D-4 example, there is only one transition point between SBFD symbols and non-SBFD symbols in one period. In the other patterns, there are two transition points between SBFD symbols and non-SBFD symbols in one period.

[0231] (3.12) Operation Example 2 This operation example may include the following operations related to SBFD time domain position display.

[0232] (Operational example 2-1): Details of signaling SBFD time position (Option 1): Indicates {start position, length} for a set of consecutive SBFD symbols The start position may be indicated by any of the following:

[0233] ・(Example 1-1a): Number of non-SBFD slots and / or number of non-SBFD symbols The starting position of the SBFD symbols within the period may be the first symbol (including the GP1 symbol) after the non-SBFD slots and / or non-SBFD symbols within the period.

[0234] GP1 may represent the length of the guard period for transitions from non-SBFD symbols to SBFD symbols. GP2 may represent the length of the guard period for transitions from SBFD symbols to non-SBFD symbols. The values ​​of GP1 and GP2 may be defined by 3GPP specifications or may be set by the gNB and may depend on the UE capabilities. The values ​​of GP1 and GP2 may be the same or different.

[0235] (Example 1-1b): SBFD slot offset and / or SBFD symbol offset The starting position of the SBFD symbol within the period may be an SBFD slot offset and / or SBFD symbol offset symbol after or relative to the starting symbol of the period.

[0236] Additionally, the length may be indicated as the number of SBFD slots and / or the number of SBFD symbols.

[0237] FIG. 14 shows an example of the configuration of an SBFD symbol according to operation example 2, option 1 of the second embodiment.

[0238] (Option 2): Indicates the length of the SBFD slot / symbol. The start or end position of the SBFD symbol within that period may be defined by the 3GPP specifications.

[0239] (Example 2-1): The starting position of the SBFD symbol within the period may be the first DL / F symbol within the period.

[0240] This may be applied to Patterns A-3 / A-4 / A-12 / B-4 / C-1 / C-2 / C-11 / D-3 in Operation Example 1.

[0241] (Example 2-2): The end position of the SBFD symbol within the period may be the last symbol (including the GP2 symbol) before the first UL symbol within the period, or the last symbol within the period.

[0242] FIG. 15 shows an example of the configuration of an SBFD symbol according to operation example 2, option 2 of the second embodiment.

[0243] This may be applied to Patterns A-6 / A-8 / A-10 / B-1 / C-5 / C-6 / C-9 / D-2 of Operation Example 1.

[0244] Furthermore, the length may be indicated as the number of SBFD slots and / or the number of SBFD symbols. As a variation, two lengths (e.g., {length 1, length 2}) may be set individually to set two consecutive sets of SBFD symbols in one period. For example, this may be applied to Pattern C-12 / 13-14 in Operation Example 1.

[0245] ・(Option 3): Bitmap / pattern display ・(Option 3-1): Bitmap is set / displayed directly / explicitly.

[0246] (Example 3-1a): One bitmap is applied to all slots / symbols (excluding UL slots / symbols) within one SBFD display period. The slots / symbols within that period are displayed bit by bit.

[0247] (Example 3-1b): A pattern is set individually for each specific slot index.

[0248] For example, a set of {slot index, pattern} may be configured, where the pattern can be a bitmap (each bit may be mapped one by one to a symbol in the slot), "all-SBFD" (representing all SBFD symbols in the slot), or "all-non-SBFD" (representing all non-SBFD symbols in the slot).

[0249] FIG. 16 shows an example of the configuration of a bitmap according to Operation Example 2, Option 3-1 of the second embodiment.

[0250] (Option 3-2): Bitmap / pattern index is set or specified.

[0251] (Example 3-2a): The list of slot SBFD patterns may be set or predefined by the 3GPP specifications.

[0252] For example, a list / table may be used with each row / element indicating the SBFD pattern of a slot. A sequence of {slot index, pattern index} may be set, with one pattern index in the list / table corresponding to one slot SBFD pattern.

[0253] The pattern can be a bitmap (each bit maps to one symbol in the slot), "all-SBFD" (representing all SBFD symbols in the slot), or "all-non-SBFD" (representing all non-SBFD symbols in the slot).

[0254] (Example 3-2b): The list of SBFD patterns may be set or predefined by instructions.

[0255] FIG. 17 shows an example of the configuration of an SBFD pattern according to operation example 2, option 3-2 of the second embodiment.

[0256] For example, a list / table may be used with each row / element representing an SBFD pattern for an entire period. A pattern index within the list / table corresponding to one SBFD pattern for an entire period may be applied.

[0257] The pattern may be a bitmap (each bit is mapped one to a symbol in a period).

[0258] As a variation, in the bitmap described above, one bit may correspond to or indicate either an "SBFD symbol" or a "non-SBFD symbol," or an "SBFD symbol" or a "non-SBFD D / F (U) symbol."

[0259] (3.13) UE Capabilities Regarding the above-mentioned SBFD, the following UE capabilities may be supported. Specifically, regarding report signaling (and RRC configuration), the following capabilities may be defined (these may be defined for each UE / FR / FC (Frequency Channel) etc.):

[0260] Support for two transition points between SBFD and non-SBFD symbols in one TDD period. Support for two sets of consecutive SBFD symbols in one TDD period. Support for a series of consecutive SBFD symbols in one TDD period.

[0261] (4) Other Embodiments Although the embodiments have been described above, it will be obvious to those skilled in the art that the present invention is not limited to the description of the embodiments, and that various modifications and improvements are possible.

[0262] For example, in the above-described embodiment, the term "subband" is used, but the subband may simply be called a "band," or may be called by other similar terms such as an auxiliary band, a spare band, etc. Furthermore, XDD / SBFD may be a provisional name, and may be called by other similar terms as described above.

[0263] 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.

[0264] Furthermore, specific, dedicated, UE-specific, and UE-dedicated may be interchangeable. Similarly, common, shared, group-common, UE-common, and UE-shared may be interchangeable.

[0265] In the present disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," etc. may be used interchangeably.

[0266] 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 directly or indirectly connected (e.g., wired, wireless, etc.) and these multiple devices. The functional block may also be realized by combining software with the single device or multiple devices.

[0267] 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.

[0268] 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 18 is a diagram showing an example of the hardware configuration of the devices. As shown in Figure 18, 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.

[0269] 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.

[0270] 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.

[0271] 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.

[0272] 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.

[0273] 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.

[0274] 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.

[0275] 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.

[0276] 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.

[0277] 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).

[0278] 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).

[0279] 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.

[0280] 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.

[0281] 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.

[0282] 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.

[0283] 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.

[0284] 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.

[0285] 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.

[0286] 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.

[0287] 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).

[0288] 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).

[0289] 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.

[0290] 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.

[0291] 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.

[0292] 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.

[0293] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0294] 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.

[0295] 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.

[0296] 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.

[0297] 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)).

[0298] 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.

[0299] 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.

[0300] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0301] 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.

[0302] 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.

[0303] 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).

[0304] 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.

[0305] 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.

[0306] 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.

[0307] 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.

[0308] 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.

[0309] 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.

[0310] 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.

[0311] 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.

[0312] 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.

[0313] 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.

[0314] 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.

[0315] 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.

[0316] 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.

[0317] 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.

[0318] 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.

[0319] 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.

[0320] 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.

[0321] 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.

[0322] 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."

[0323] 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.

[0324] 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.

[0325] The reference signal may also be abbreviated as Reference Signal (RS) and may be called a pilot depending on the applicable standard.

[0326] 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."

[0327] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0328] 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.

[0329] 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.

[0330] 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.

[0331] 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.

[0332] 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."

[0333] 19 shows an example of the configuration of a vehicle 2001. As shown in Fig. 19, 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.

[0334] 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).

[0335] 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.

[0336] 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 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 obtained 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.

[0337] 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.

[0338] 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.

[0339] 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.

[0340] The communication module 2013 transmits, via wireless communication to an external device, a current signal from the current sensor that is input to the electronic control unit 2010. The communication module 2013 also transmits, via wireless communication to an external device, the rotation speed signals of the front and rear wheels acquired by a rotation speed sensor 2022, the air pressure signals of the front and rear wheels acquired by an air pressure sensor 2023, the vehicle speed signal acquired by a vehicle speed sensor 2024, the acceleration signal acquired by an acceleration sensor 2025, the accelerator pedal depression amount signal acquired by an accelerator pedal sensor 2029, the brake pedal depression amount signal acquired by a brake pedal sensor 2026, the shift lever operation signal acquired by a shift lever sensor 2027, and the detection signals for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 2028, all of which are input to the electronic control unit 2010.

[0341] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle. The communication module 2013 also stores the various information received from the 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, axle 2009, sensors 2021 to 2028, and the like provided in the vehicle 2001.

[0342] (Additional Note) The above-described disclosure may also be expressed as follows.

[0343] A first feature of the present invention is a terminal including: a communication unit that transmits and receives radio signals according to a method in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time period based on time division duplex; and a control unit that sets an allocation pattern or positions of the uplink subbands and the downlink subbands in the frequency direction based on a known setting or signaling from a network.

[0344] A second feature is a terminal comprising: a communication unit that transmits and receives radio signals according to a method in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time based on time division duplex; a receiving unit that receives a setting instruction including a bitmap indicating positions of the uplink subbands and the downlink subbands in the frequency direction; and a control unit that sets the positions of at least either the uplink subbands or the downlink subbands in the frequency direction based on the bitmap.

[0345] A third feature is a terminal comprising: a communication unit that transmits and receives radio signals according to a method in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time period based on time division duplex; a receiving unit that receives a setting instruction including a time direction arrangement pattern of the uplink subbands and the downlink subbands or a bitmap indicating positions in the time direction; and a control unit that sets the time direction positions of at least one of the uplink subbands and the downlink subbands based on the arrangement pattern or the bitmap.

[0346] A fourth feature is a terminal including: a communication unit that transmits and receives radio signals according to a method in which uplink subbands and downlink subbands are allocated non-overlappingly in a frequency direction within a specified time period based on time division duplex; and a control unit that sets the positions of at least one of the uplink subbands and the downlink subbands in the frequency direction and the time direction based on a combination of the frequency direction and the time direction and whether or not a dynamic setting instruction is given.

[0347] According to a fifth feature, in any one of the first to fourth features, the controller sets the allocation pattern or the position based on the setting instruction and downlink control information.

[0348] A sixth feature is a wireless communication method including: a step of transmitting and receiving, by a terminal, wireless signals according to a scheme in which uplink subbands and downlink subbands are allocated non-overlappingly in a frequency direction within a specified time period based on time division duplex; and a step of setting, by the terminal, an arrangement pattern or positions of the uplink subbands and the downlink subbands in the frequency direction based on a known setting or signaling from a network.

[0349] 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.

[0350] 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 communication unit that transmits and receives radio signals in accordance with a method in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time period based on time division duplex; and a control unit that sets an allocation pattern of the uplink subbands and downlink subbands in the frequency direction based on a known setting or signaling from a network, wherein the control unit assumes multiple transition points in a single setting period and sets the allocation pattern.

2. The terminal according to claim 1, wherein the control unit assumes a maximum of two transition points in the single set period.

3. The terminal according to claim 1, wherein the control unit sets the allocation pattern based on the start positions and lengths of the uplink subbands and the downlink subbands in the time direction.

4. A wireless communication method in a terminal, comprising: a step of transmitting and receiving radio signals in accordance with a method in which uplink subbands and downlink subbands are allocated non-overlappingly in the frequency direction within a specified time period based on time division duplex; and a step of setting an allocation pattern in the frequency direction of the uplink subbands and the downlink subbands based on a known setting or signaling from a network, wherein the step of setting the allocation pattern assumes multiple transition points in a single setting period and sets the allocation pattern.

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