Terminal and wireless communication method

Abstract

This terminal transmits and receives wireless signals in accordance with a sub-band full-duplex communication scheme in which an uplink sub-band and a downlink sub-band are allocated in a non-overlapping manner in the frequency direction within a stipulated time based on time division duplexing. The terminal sets repeated transmission of an uplink control channel, limited to a time unit to which the sub-band full-duplex communication scheme is applied.

Description

Terminal and wireless communication method

[0001] The present disclosure relates to a terminal and a wireless communication method that supports 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, in 3GPP Release 19, an extension of the duplex method is being considered (Non-Patent Document 1). Specifically, regarding Sub-Band non-overlapping Full Duplex (SBFD), which is a duplex method that enables simultaneous use of a downlink (DL) and an uplink (UL) within a carrier in a time division duplex (TDD) band, transmission and reception across SBFD symbols and non-SBFD symbols is being considered.

[0004] For example, transmission and reception of physical channels or signals using SBFD symbols and non-SBFD symbols in different slots has been studied (Non-Patent Document 2). Such transmission and reception of physical channels using SBFD symbols and non-SBFD symbols may also apply to uplink control channels, specifically, PUCCHs (Physical Uplink Control Channels).

[0005] For PUCCH, repeated transmission (PUCCH repetition) by a terminal (User Equipment, UE) is possible to extend coverage.

[0006] 3GPP TR 38.858 V1.0.0, 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on Evolution of NR Duplex Operation (Release 18), 3GPP, September 2023 "New WID: Evolution of NR duplex operation: Sub-band full duplex (SBFD)", RP-234035, 3GPP TSG RAN Meeting #102, 3GPP, December 2023

[0007] However, in the case of PUCCH repetition, it is necessary to consider whether SBFD symbols or non-SBFD symbols are allocated as PUCCH resources.

[0008] 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 reliably and efficiently transmit uplink control channels, including repeated transmissions, using SBFD symbols and non-SBFD symbols.

[0009] 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 subband full-duplex communication 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 (control unit 270) that sets repeated transmission of an uplink control channel limited to the time unit to which the subband full-duplex communication method is applied.

[0010] One aspect of the present disclosure is a terminal that includes a communication unit that transmits and receives radio signals according to a subband full-duplex communication method in which uplink subbands or 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 repeated transmission of an uplink control channel using a time unit in which the subband full-duplex communication method is applied and a time unit in which the subband full-duplex communication method is not applied.

[0011] 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 diagram of a gNB 100 and a UE 200. FIG. 5 is a diagram illustrating an example configuration of a UL subband and a DL subband according to SBFD. FIG. 6 is a diagram illustrating an example configuration of information elements related to PUCCH repetition. FIG. 7 is a diagram illustrating an example configuration of PUCCH resources according to option 1 of operation example 1. FIG. 8 is a diagram illustrating an example configuration of information elements according to a modified example of option 1 of operation example 1. FIG. 9 is a diagram illustrating an example allocation of PUCCH resources according to a modified example of option 1 of operation example 1. FIG. 10 is a diagram illustrating an example allocation of PUCCH resources according to option 2-1 of operation example 2. FIG. 11 is a diagram illustrating an example allocation of PUCCH resources according to option 2-1 of operation example 2. FIG. 12 is a diagram illustrating an example allocation of PUCCH resources according to option 2-2 of operation example 2. Fig. 13 is a diagram illustrating an example of the hardware configuration of the gNB 100 and the UE 200. Fig. 14 is a diagram illustrating an example of the configuration of a vehicle 2001.

[0012] 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.

[0013] (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.

[0014] 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 .

[0015] 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."

[0016] 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.

[0017] 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.

[0018] 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.

[0019] The wireless communication system 10 may also support multiple frequency ranges (FR). Specifically, the wireless communication system 10 may support the following frequency ranges:

[0020] ・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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] If the 14-symbol / slot configuration is maintained, the larger (wider) the SCS, the shorter the symbol period (and slot period). The time direction may be referred to as the time domain, symbol period, symbol length, or symbol time. The frequency direction may be referred to as the frequency domain, resource block, subcarrier, or BWP (Bandwidth part).

[0027] 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.

[0028] 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.

[0029] 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).

[0030] 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.

[0031] 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).

[0032] 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).

[0033] 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.

[0034] On the other hand, in XDD / SBFD, gNB100 can configure specific frequency resources (e.g., subbands) as DL and other frequency resources as UL at a specified time T, such as a symbol, and instruct UE200 accordingly.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] (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.

[0039] 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.

[0040] 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. 13.

[0041] 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.

[0042] Furthermore, the radio signal transceiver 210 can transmit and receive radio signals in accordance with SBFD, i.e., subband full-duplex (SBFD) 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 duplex. In this embodiment, the radio signal transceiver 210 may constitute a communication unit. Of course, the radio signal transceiver 210 may also support duplexing methods such as TDD and FDD (Frequency Division Duplex).

[0043] 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.

[0044] 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).

[0045] 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 .

[0046] 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.

[0047] The control signal and reference signal processor 240 performs processing using reference signals (RS) such as a Demodulation Reference Signal (DMRS) and a Phase Tracking Reference Signal (PTRS).

[0048] DMRS is a reference signal (pilot signal) known between the base station and the terminal for estimating the fading channel used for data demodulation, while PTRS is a terminal-specific reference signal for estimating phase noise, which is an issue in high frequency bands.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] The control signal and reference signal processor 240 may transmit capability information (UE capability information) of the UE 200 to the network. In particular, in this embodiment, the control signal and reference signal processor 240 may transmit capability information related to SBFD. The capability information may include, for example, capabilities related to support of SBFD symbols and / or repeated transmission of PUCCH using SBFD symbols (PUCCH repetition).

[0053] The encoding / decoding unit 250 performs data division / concatenation and channel coding / decoding for each predetermined communication destination (gNB 100 or another gNB).

[0054] 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.

[0055] 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).

[0056] 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.

[0057] Specifically, the control unit 270 can control transmission of a PUCCH (uplink control channel) in a time unit (for example, a symbol) to which SBFD is applied. The PUCCH may include PUCCH repetition.

[0058] The control unit 270 may set the PUCCH repetition by limiting it to a time unit to which SBFD is applied. The time unit to which SBFD is applied may typically mean an SBFD symbol. However, it is not necessarily limited to a symbol, and the time unit may be a slot or minislot (or a subslot).

[0059] The control unit 270 can set the PUCCH repetition based on the resources to which the PUCCH is allocated, PUCCH configuration information, or DCI (downlink control information).

[0060] The resource to which the PUCCH is allocated may refer to the symbol type (SBFD symbol or SBFD symbol) of the determined PUCCH resource when it is configured separately for SBFD and non-SBFD. The PUCCH configuration information may be, for example, PUCCH-Config. However, as long as it is information indicating the PUCCH configuration, it is not necessarily limited to PUCCH-Config, and other configurations may also be used.

[0061] Furthermore, control unit 270 may set PUCCH repetition using a time unit to which SBFD is applied and a time unit to which SBFD is not applied. The time unit to which SBFD is applied may refer to an SBFD symbol, as described above.

[0062] When setting PUCCH repetition using SBFD symbols and non-SBFD symbols, control unit 270 may set PUCCH repetition based on frequency domain resource allocation, specifically, FDRA (Frequency Domain Resource Assignment). FDRA may be called 3GPP Frequency Domain Resource Allocation, and may be interpreted as information indicating resource allocation in the frequency domain.

[0063] (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 PUCCH repetition when SBFD is applied.

[0064] (3.1) Assumptions and Issues Regarding SBFD, 3GPP has agreed on the term "DL / UL usable PRB," which means a Physical Resource Block (PRB) that can be used as either DL or UL. Specifically, a UL subband frequency resource in an active UL BWP is called a UL usable PRB, and a DL subband frequency resource in an active DL BWP is called a DL usable PRB.

[0065] 5 shows an example of the configuration of UL subbands and DL subbands according to SBFD. As shown in FIG. 5, UL subbands (UL usable PRBs) may be configured in a UL BWP, and DL subbands (DL usable PRBs) may be configured in a DL BWP.

[0066] Fig. 6 shows an example of the structure of an information element related to PUCCH repetition. As shown in Fig. 6, the number of PUCCH repetitions (pucch-RepetitionNrofSlots) and the number of slots to which PUCCH is allocated (nrofSlots) can be set.

[0067] Considering that different UL frequency resources are used for SBFD symbols and non-SBFD symbols, PUCCH repetition may be required for SBFD symbols and / or non-SBFD symbols. Also, considering that polar coding combinations require the same code rate, PUCCH repetition transmission methods considering SBFD slots / sub-slots and non-SBFD slots / sub-slots may require more special handling than PDSCH / PUSCH repetition.

[0068] Therefore, it is considered necessary to strengthen the functionality related to PUCCH repetition using SBFD symbols and non-SBFD symbols.

[0069] (3.2) Operation Overview If the repetition factor of the determined PUCCH resource is greater than "1", that is, if multiple PUCCHs are repeatedly transmitted, the following options may be applied.

[0070] (Option 1): PUCCH repetitions are restricted to the same symbol type (i.e., only SBFD symbols or only non-SBFD symbols).

[0071] (Step 1): Determine SBFD symbol or non-SBFD symbol type for PUCCH repetition (Step 2): Determine PUCCH repetition slot / subslot (Option 2): PUCCH repetition between SBFD symbols and non-SBFD symbols (Option 2-1): The same PUCCH resource is used for repetition in SBFD symbols and non-SBFD symbols, i.e., all parameters including FDRA are the same for repetition in SBFD symbols and non-SBFD symbols.

[0072] (Option 2-2): A single PUCCH resource with FDRA extensions is used for repetitions in SBFD and non-SBFD symbols. (Option 2-3): Separate PUCCH resources are determined for repetitions in SBFD and non-SBFD symbols.

[0073] (3.3) Operation Example 1 In the case of the above-described option 1, that is, when PUCCH repetition is restricted to the same symbol type (i.e., only SBFD symbols or only non-SBFD symbols), the following procedure may be applied.

[0074] (Step 1): The UE determines the SBFD symbol or non-SBFD symbol type for the PUCCH repetition.

[0075] (Option 1-1): In the case of separate PUCCH resource configuration for SBFD and non-SBFD, the symbol type shall be the same as that of the determined PUCCH resource.

[0076] (Option 1-2): Use the same symbol type as the symbol of the first PUCCH repetition (or the PUCCH symbol of the determined PUCCH report slot / subslot).

[0077] (Options 1-3): Determine the type based on configuration, indication, and / or associated DCI / PDSCH.

[0078] For example, the SBFD symbol or non-SBFD symbol type (PUCCH repetition transmission of HARQ-ACK for SPS PDSCH) may be configured for each SPS configuration, and the configuration of the SBFD symbol or non-SBFD symbol type may be performed by a parameter separate from the SBFD symbol or non-SBFD symbol type for SPS PDSCH, or by a common parameter.

[0079] When "SBFD type" is configured for the SPS configuration, the symbol type of PUCCH repetition of HARQ-ACK for SPS PDSCH for the SPS configuration may be "SBFD symbol type". When "non-SBFD type" is configured for the SPS configuration, the symbol type of PUCCH repetition of HARQ-ACK for SPS PDSCH for the SPS configuration may be "non-SBFD symbol type".

[0080] For example, the SBFD symbol or non-SBFD symbol type of the Scheduling Request (SR) / Channel State Information (CSI) PUCCH repetition may be configured per SR / CSI report configuration or per SR / CSI PUCCH resource configuration.

[0081] If "SBFD type" is configured for the SR / CSI report configuration or the SR / CSI PUCCH resource configuration, the symbol type of PUCCH repetition for the SR / CSI PUCCH configuration may be "SBFD symbol type". If "non-SBFD type" is configured for the SR / CSI report configuration or the SR / CSI PUCCH resource configuration, the symbol type of PUCCH repetition for the SR / CSI PUCCH configuration may be "non-SBFD symbol type".

[0082] For example, a new bit field may be added to DL DCI (e.g., DCI 1_1 / 1_2 / 1_3) to explicitly indicate the symbol type of HARQ-ACK of DCI or PUCCH repetition of PDSCH scheduled by DCI.

[0083] If "SBFD type" is displayed, the symbol type of PUCCH repetition of HARQ-ACK for DCI may be "SBFD symbol type". If "non-SBFD type" is displayed, the symbol type of PUCCH repetition of HARQ-ACK for DCI may be "non-SBFD symbol type".

[0084] For example, the symbol type of a PDCCH symbol may implicitly indicate the symbol type of a PUCCH repetition for HARQ-ACK of a PDSCH of a DCI or a PDSCH scheduled by a DCI. If the PDCCH that schedules a PDSCH or the PDCCH that triggers HARQ-ACK without scheduling a PDSCH is an SBFD symbol, the symbol type of a PUCCH repetition for HARQ-ACK of a DCI may be "SBFD symbol type."

[0085] If the PDCCH that schedules the PDSCH or the PDCCH that triggers the HARQ-ACK without scheduling the PDSCH is a non-SBFD symbol, the symbol type of the PUCCH repetition for the HARQ-ACK of the DCI may be the "non-SBFD symbol type".

[0086] For example, the symbol type of the PDSCH may implicitly indicate the symbol type of the PUCCH repetition for the HARQ-ACK of the PDSCH. If the PDSCH is an SBFD symbol, the symbol type of the PUCCH repetition for the HARQ-ACK of the PDSCH may be "SBFD symbol type." If the PDSCH is a non-SBFD symbol, the symbol type of the PUCCH repetition for the HARQ-ACK of the PDSCH may be "non-SBFD symbol type."

[0087] (Options 1-4): The type is determined based on the payload size of the UCI (Uplink Control Information).

[0088] If the UCI payload size of the PUCCH is larger / smaller than a payload size threshold or within a specific range (the threshold or specific range may be configurable by the gNB or defined by 3GPP specifications), the symbol type of the PUCCH repetition may be an SBFD symbol type. Otherwise, the symbol type of the PUCCH repetition may be a non-SBFD symbol type.

[0089] (Step 2): The UE determines the PUCCH repetition slot / sub-slot.

[0090] (Example 1): If the symbol type of the PUCCH repetition determined in step 1 is the SBFD symbol type, the UE shall determine whether the PUCCH transmission repetition occurs at the first SBFD symbol (excluding the SBFD symbol configured for SSB (SS / PBCH Block) reception)

[0091] For example, the UE determines the first N_PUCCH^repeat slots / subslots for PUCCH transmission starting from the indicated / configured PUCCH reporting slot, with the SBFD symbol as the first symbol (excluding the SBFD symbol configured for SSB reception), and with the following characteristics:

[0092] - Starting from the first symbol, consecutive SBFD symbols greater than or equal to the number of symbols provided by nrofsymbols (SBFD symbols configured for SSB reception may be excluded).

[0093] PUCCH RBs do not overlap with RBs outside the UL subband (or UL usable PRBs) of the SBFD symbol.

[0094] In addition, the UE may determine the N_PUCCH^repeat slot / subslot as the first N_PUCCH^repeat slot where the PUCCH repetition does not overlap with any DL / SSB symbols (does not overlap with both SBFD symbols and non-SBFD symbols at the same time), and the UE may assume that the PUCCH repetition in the determined N_PUCCH^repeat slot / subslot is an SBFD symbol.

[0095] The UE may also assume that the PUCCH frequency resources do not overlap with RBs outside the UL subband (or UL usable PRBs) of the SBFD symbol.

[0096] (Example 2): If the symbol type of the PUCCH repetition determined in step 1 is a non-SBFD symbol type, the UE may determine the N_PUCCH^repeat slot as the first N_PUCCH^repeat slot that is within a UL or non-SBFD flexible symbol where the PUCCH repetition is not configured for SSB (or where the PUCCH repetition does not overlap with an SBFD symbol or a non-SBFD DL / SSB symbol).

[0097] For example, the UE may determine N_PUCCH^repeat as the first N_PUCCH^repeat starting from the indicated / configured PUCCH reporting slot and having as its first symbol a non-SBFD flexible symbol that is not a UL symbol or an SSB symbol, and starting from the first symbol that is a non-SBFD flexible symbol that is not a SSB symbol or a number of consecutive UL symbols greater than or equal to the number of symbols provided by nrofsymbols.

[0098] In addition, the UE may determine the N_PUCCH^repeat slot / subslot as the first N_PUCCH^repeat slot where the PUCCH transmission repetition does not overlap with any DL / SSB symbols (does not overlap with both SBFD symbols and non-SBFD symbols at the same time), and may expect the PUCCH repetition of the determined N_PUCCH^repeat slot / subslot to be an SBFD symbol.

[0099] Fig. 7 shows an example of allocation of PUCCH resources according to option 1 of operation example 1. As shown in Fig. 7, resources for PUCCH repetition may be allocated to SBFD symbols or non-SBFD symbols.

[0100] In addition, in Option 1, separate repetition elements configured for SBFD and non-SBFD can be included in the PUCCH resource configuration or the PUCCH format configuration. For example, the additional PUCCH repetition element may include the following parameters:

[0101] Additional parameters for PUCCH repetition element configuration (e.g., nrofSlots-sbfd-r19 is configured in PUCCH-FormatConfig).

[0102] Additional parameters for PUCCHrepetition element configuration (e.g. PUCCH-RepetitionNrofSlots-sbfd-r19 is configured in PUCCH-ResourceExt).

[0103] Fig. 8 shows an example of the configuration of information elements according to a modification of option 1 of operation example 1. Fig. 9 shows an example of allocation of PUCCH resources in a modification of option 1 of operation example 1.

[0104] If the determined symbol type (determined in step 1) is an SBFD symbol type, or if the PUCCH symbol in the determined report slot / subslot is within an SBFD symbol, the SBFD repetition factor set by an additional parameter (e.g., nrofSlots-sbfd-r19 or PUCCH-RepetitionNrofSlots-sbfd-r19) may be applied to determine the number of PUCCH repetitions within the SBFD symbol.

[0105] If nrofSlots-sbfd-r19 or PUCCH-RepetitionNrofSlots-sbfd-r19 is not configured, one of the following options may apply:

[0106] (Opt 1): Conventional parameters (e.g., nrofSlots, PUCCH-RepetitionNrofSlots-r17) are applied.

[0107] (Opt 2): The repetition factor is determined to be '1'. If the symbol type determined (in step 1) is a non-SBFD symbol type, or if the first PUCCH repetition is within an SBFD symbol, the non-SBFD repetition factor set by the previous parameters (e.g., nrofSlots, PUCCH-RepetitionNrofSlots-r17) may be applied to determine the number of PUCCH repetitions within the non-SBFD symbol.

[0108] (3.4) Operation Example 2 The above-described option 2, that is, PUCCH repetition between SBFD symbols and non-SBFD symbols, may be performed across SBFD symbols and non-SBFD symbols.

[0109] (Option 2-1): The same PUCCH resource is used for repeated transmissions on SBFD symbols and non-SBFD symbols, i.e., all parameters including FDRA are the same for repeated transmissions on SBFD symbols and non-SBFD symbols.

[0110] (Option 2-1A): The UE determines the PUCCH repetition slot / subslot without checking for collisions of PUCCH frequency resources that overlap with UL subbands (or UL usable PRBs) outside the RB of the SBFD symbol.

[0111] For determining the PUCCH repetition slot / subslot, the UE may determine the N_PUCCH^repeat slot / subslot as the first N_PUCCH^repeat slot where the PUCCH repetition is within an SBFD symbol (excluding SBFD symbols configured for SSB reception) or within a UL or non-SBFD flexible symbol not configured for SSB.

[0112] The UE may also determine the first N_PUCCH^repeat slots of PUCCH transmission, starting from the PUCCH reporting slot, as follows: N_PUCCH^repeat slots = ...

[0113] - a UL symbol, or a flexible symbol that is not a (non-SBFD) SSB symbol, or an SBFD DL (or SSB) symbol as the first symbol, and - consecutive UL symbols, or flexible symbols that are not (non-SBFD) SSB symbols, or SBFD DL (or SSB) symbols, starting with the first symbol, for a number of symbols greater than or equal to the number given by nrofsymbols.

[0114] (PUCCH does not overlap with both SBFD and non-SBFD symbols at the same time) If the PUCCH repetition in the determined slot / subslot is within an SBFD symbol, the UE may act according to one of the following:

[0115] (Alt A-1): Assume that the frequency resources of the PUCCH resources do not overlap with RBs outside the UL subband (or UL usable PRBs).

[0116] (Alt A-2): If the frequency resource of the PUCCH resource overlaps with an RB outside the UL subband (or UL usable PRB), PUCCH repetition is not performed, i.e., PUCCH repetition is dropped.

[0117] (Option 2-1B): The UE checks for collisions of PUCCH frequency resources that overlap with UL subbands outside the RBs (or UL usable PRBs) within the SBFD symbol and determines the PUCCH repetition slot / subslot.

[0118] Regarding the determination of the PUCCH repetition slot / subslot, the UE may determine as the first N_PUCCH^repeat slot / subslot the N_PUCCH^repeat slot / subslot where the PUCCH repetition is within an SBFD symbol (excluding SBFD symbols configured for SSB reception) and does not overlap with the PUCCH frequency resource, does not overlap with RBs outside the UL subband (or UL usable PRB), or is within a UL or non-SBFD flexible symbol not configured for SSB.

[0119] The UE may also determine the first N_PUCCH^repeat slots of PUCCH transmission, starting from the PUCCH reporting slot, as follows: N_PUCCH^repeat slots = ...

[0120] - A UL symbol, or a flexible symbol that is not a (non-SBFD) SSB symbol, or an SBFD DL (or SSB) symbol as the first symbol, and - Consecutive UL symbols, or (non-SBFD) SSB symbols, or flexible symbols that are not SBFD DL (or SSB) symbols, starting with the first symbol, for a number equal to or greater than the number of symbols provided by nrofsymbols.

[0121] If the PUCCH in a slot / subslot is within an SBFD symbol, the PUCCHRB does not overlap with RBs outside the UL subband (or UL usable PRBs) within the SBFD symbol.

[0122] (Also, PUCCH does not overlap with both SBFD and non-SBFD symbols at the same time).

[0123] 10 and 11 show an example of allocation of PUCCH resources according to option 2-1 of operation example 2. Specifically, Fig. 10 and 11 show an example of allocation of PUCCH resources according to option 2-1A and option 2-1B.

[0124] (Option 2-2): A single PUCCH resource extended with FDRA is used for repeated transmissions in SBFD symbols and non-SBFD symbols.

[0125] The UE may determine the PUCCH repetition slot / sub-slot without checking for collisions of PUCCH frequency resources that overlap with RBs outside the UL sub-band (or UL usable PRBs).

[0126] For determining the PUCCH repetition slot / subslot, the UE may determine the N_PUCCH^repeat slot / subslot as the first N_PUCCH^repeat slot where the PUCCH repetition is within an SBFD symbol (excluding SBFD symbols configured for SSB reception) or within a UL or non-SBFD flexible symbol not configured for SSB.

[0127] The UE may determine the first N_PUCCH^repeat slots of PUCCH transmission starting from the PUCCH reporting slot as follows:

[0128] - a UL symbol, or a flexible symbol that is not a (non-SBFD) SSB symbol, or an SBFD DL (or SSB) symbol as the first symbol, and - consecutive UL symbols, or flexible symbols that are not (non-SBFD) SSB symbols, or SBFD DL (or SSB) symbols, starting with the first symbol, for a number of symbols greater than or equal to the number given by nrofsymbols.

[0129] (PUCCH does not overlap with both SBFD and non-SBFD symbols at the same time) Regarding FDRA extension of PUCCH repetition between SBFD and non-SBFD symbols, in the case of FDRA, the same number of RBs may be used for PUCCH repetition in SBFD and non-SBFD symbols. The starting RB may be different.

[0130] FIG. 12 shows an example of allocation of PUCCH resources according to option 2-2 of operation example 2.

[0131] (Option 2-2A): Set additional starting RB parameters in the PUCCH resource configuration.

[0132] For example, new parameters startingPRB-sbfd-r19 and / or secondHopPRB-sbfd-r19 may be configured in PUCCH-Resource. In case of PUCCH repetition on SBFD symbols, new parameters startingPRB-sbfd-r19 and / or secondHopPRB-sbfd-r19 may be applied to determine the starting RB of the PUCCH repetition.

[0133] For example, in the case of PUCCH repetition on non-SBFD symbols, the conventional parameters startingPRB-sbfd-r19 and / or secondHopPRB-sbfd-r19 may be applied to determine the starting RB of the PUCCH repetition.

[0134] (Option 2-2B): The RB offset is configured per PUCCH resource (in the PUCCH resource configuration), or per PUCCH format (in the PUCCH format configuration), or for all PUCCH resources / formats (e.g., PUCCH-Config).

[0135] For example, the new parameter RB-offset-rep-sbfd-r19 may be configured in PUCCH-Resource (or PUCCH-ResourceExt), PUCCH-FormatConfig or PUCCH-Config.

[0136] In the case of PUCCH repetition in an SBFD symbol (when the first repetition is a non-SBFD symbol), when the first PUCCH repetition is an SBFD symbol, or when PUCCH repetition is in a non-SBFD symbol, the starting RB of the PUCCH repetition may be one of the following.

[0137] (Alt 1): startingPRB + RB-offset-sbfd-r19 or startingPRB-RB-offset-sbfd-r19 (Alt 2): (startingPRB + / - RB-offset-sbfd-r19) mod UL BWP size, (startingPRB + / - RB-offset-sbfd-r19) mod UL subband size, or (startingPRB + / - RB-offset-sbfd-r19) mod UL subband size + starting_PRB_UL_subband. UL subband size can be replaced with the number of PRBs available in the UL. starting_PRB_UL_subband represents the starting PRB of the UL subband (or the PRBs available in the UL). The RB offset may be defined by 3GPP specifications. For example, it is equal to the offset between the starting PRB of the UL subband (or the PRBs available in the UL) and the starting PRB of the UL BWP.

[0138] The FDRA extension according to Option 2-2A and / or Option 2-2B may be applied only when the PUCCH frequency resource overlaps with RBs outside the UL subband (or UL usable PRB) of the SBFD symbol.

[0139] If the PUCCH frequency resource does not overlap with RBs outside the UL subband (or UL usable PRB) of the SBFD symbol, the UE may apply the configured frequency resource of the determined PUCCH resource to the SBFD symbol and non-SBFD symbol.

[0140] The UE may assume that the PUCCH frequency resource after applying the FDRA extension according to Option 2-2A and / or Option 2-2B is within the UL subband (or UL available PRB) of the PUCCH repetition of the SBFD symbol.

[0141] Alternatively, if the PUCCH frequency resource after applying the FDRA extension according to Option 2-2A and / or Option 2-2B overlaps with an RB outside the UL subband (or UL usable PRB) of the PUCCH repetition of the SBFD symbol, the UE may operate according to one of the following:

[0142] - (Option a): Do not execute PUCCHrepetition.

[0143] (Option b): Perform PUCCH repetition only in non-SBFD symbols, i.e., the UE may apply Example 1 of Step 2 of Operation Example 1 to determine the PUCCH repetition slot / sub-slot.

[0144] (3.5) Modifications Each of the above-described operation examples (options) may be applied only to a specific case, or only to a specific PUCCH format (PF), or only when a specific condition is met.

[0145] The specific case may be, for example, a case where the first PUCCH repetition is located in an SBFD symbol or a non-SBFD symbol. The specific PUCCH format may be, for example, at least one of PF0, PF1, PF2, PF3, and PF4.

[0146] The specific condition may be, for example, when an RRC parameter is configured. The relevant case, specific PF or condition may be defined by 3GPP specifications and / or RRC configuration.

[0147] Note that different options may be applied to different cases and / or different PFs. For example, different options may be applied when the first PUCCH repetition is in an SBFD symbol and when the first PUCCH repetition is in a non-SBFD symbol. Also, different options may be applied to different PFs.

[0148] The applied option may be defined by the 3GPP specifications or configured by the RRC. For example, if the symbol length of the PUCCH is greater than a specific value (e.g., defined by the 3GPP specifications and / or configured by the RRC), Option 1 may be applied; otherwise, Option 2 may be applied. Specifically, if an RRC parameter (e.g., an RRC parameter of symbol type) is configured, Option 1 (Operation Example 1) may be applied; otherwise, Option 2 (Operation Example 2) may be applied.

[0149] (3.6) UE Capability A UE may report the presence or absence of the following capabilities (UE Capability Information) regarding SBFD to the network. The UE Capability Information may be defined for each UE, frequency range (FR), frequency channel (FC), etc. Furthermore, RRC signaling and configuration for reporting the UE Capability Information may be defined.

[0150] Support for limited PUCCH repetition only in SBFD slots / subslots Support for limited PUCCH repetition only in non-SBFD slots / subslots Support for PUCCH repetition between SBFD symbols and non-SBFD symbols According to the above-described operation example, the UE can transmit a PUCCH including PUCCH repetition only in SBFD symbols or non-SBFD symbols. In addition, the UE can set the PUCCH repetition based on PUCCH configuration information or DCI, and can also set the PUCCH repetition based on FDRA.

[0151] Therefore, the UE can reliably and efficiently transmit the PUCCH including PUCCH repetition using SBFD symbols and non-SBFD symbols.

[0152] (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.

[0153] 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 auxiliary band, spare band, etc. Furthermore, XDD / SBFD may be a provisional name, and may be called by other similar terms as described above.

[0154] Furthermore, the operation examples 1 and 2 (options 1 and 2) may be switched not only depending on the payload size of the UCI but also, for example, depending on the type of the UCI.

[0155] Additionally, 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.

[0156] Furthermore, specific, dedicated, UE-specific, and UE-dedicated may be interchangeable. Similarly, common, shared, group-common, UE-common, and UE-shared may be interchangeable.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] Furthermore, the above-described gNB 100 and UE 200 (the devices) may function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 13 is a diagram showing an example of the hardware configuration of the devices. As shown in Figure 13, 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.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] 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).

[0170] 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).

[0171] Furthermore, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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 to. The output information may be deleted. The input information may be transmitted to another device.

[0179] 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).

[0180] 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).

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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.

[0185] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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)).

[0190] 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.

[0191] 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.

[0192] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0193] 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.

[0194] 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.

[0195] 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).

[0196] 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.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a predetermined signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0215] 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.

[0216] 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.

[0217] The reference signal may also be abbreviated as Reference Signal (RS) and may be called a pilot depending on the applicable standard.

[0218] 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."

[0219] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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."

[0225] 14 shows an example of the configuration of a vehicle 2001. As shown in Fig. 14, 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.

[0226] 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).

[0227] 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.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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.

[0232] 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.

[0233] 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.

[0234] 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 Rotation speed 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 according to a subband full-duplex communication method in which uplink subbands and downlink subbands are allocated non-overlapping in the frequency direction within a specified time period based on time division duplex; and a control unit that sets repeated transmission of an uplink control channel limited to the time unit in which the subband full-duplex communication method is applied.

2. The terminal according to claim 1, wherein the control unit sets repeated transmission of the uplink control channel based on resources to which the uplink control channel is allocated, uplink control channel setting information, or downlink control information.

3. A terminal comprising: a communication unit that transmits and receives radio signals according to a subband full-duplex communication method in which uplink subbands or downlink subbands are assigned non-overlapping in the frequency direction within a specified time based on time division duplex; and a control unit that sets repeated transmission of an uplink control channel using a time unit in which the subband full-duplex communication method is applied and a time unit in which the subband full-duplex communication method is not applied.

4. The terminal according to claim 3, wherein the control unit sets repeated transmission of the uplink control channel based on frequency domain resource allocation.

5. A wireless communication method in a terminal, comprising: a step of transmitting and receiving wireless signals according to a subband full-duplex communication method in which uplink subbands or downlink subbands are allocated non-overlapping in the frequency direction within a specified time based on time division duplex; and a step of setting repeated transmission of an uplink control channel limited to the time unit to which the subband full-duplex communication method is applied.

6. A wireless communication method in a terminal, comprising: a step of transmitting and receiving wireless signals according to a subband full-duplex communication method in which uplink subbands or downlink subbands are assigned non-overlapping in the frequency direction within a specified time based on time division duplex; and a step of setting repeated transmission of an uplink control channel using a time unit in which the subband full-duplex communication method is applied and a time unit in which the subband full-duplex communication method is not applied.

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