Base station and radio communication method

Abstract

This base station is provided with: a transmission unit that reports that an operation is carried out in a full duplex mode in which transmission and reception are performed using resources overlapping in a time domain and a frequency domain; and a control unit that instructs the transmission / reception direction of each terminal in the resources via a terminal-specific parameter.

Description

Base station and wireless communication method

[0001] The present disclosure relates to a base station and a wireless communication method that operate in full duplex mode.

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

[0003] Release 18 discusses a duplexing scheme that enables simultaneous use of downlink (DL) and uplink (UL) by having a base station (hereinafter referred to as gNodeB (gNB)) recognize a time division duplex (TDD) band as multiple subbands (see Non-Patent Document 1). This duplexing scheme is called Subband non-overlapping Full Duplex (SBFD). Note that even if a gNB recognizes SBFD, a terminal (hereinafter referred to as user equipment (UE)) recognizes either DL or UL. In other words, even if a gNB operates according to SBFD, a UE operates according to Half Duplex (HD).

[0004] Further extensions of duplexing schemes are being considered for gNBs and UEs. Specifically, full duplex (FD) schemes using overlapping resources in the time domain and frequency domain (time-frequency resources) are being considered (Non-Patent Document 2).

[0005] “Study on Evolution of NR Duplex Operation”, RP-213591, 3GPP TSG RAN#94-e, 3GPP, Dec. 6 - 17, 2021 “Evolution of NR duplex operation”, RWS-230249, 3GPP TSG RAN Rel-19 workshop, NTT DOCOMO, INC., June. 15 - 16, 2023

[0006] Previously, there was no mechanism for informing UEs of the duplex mode that gNBs use. However, when gNBs operate in FD (and HD) mode, or when they operate in combination with the above-mentioned SBFD mode, it is expected that self-interference will become larger and more complex than ever before. Therefore, it is considered necessary for UEs to recognize that gNBs operate in FD mode.

[0007] Here, assuming that the gNB informs the UE that it operates in FD, to realize FD, it is necessary to indicate the resource direction (DL / UL) from the UE's perspective. To indicate the resource direction (DL / UL) from the UE's perspective, it is conceivable to use cell-specific signaling.

[0008] However, when cell-specific signaling is used, instructions are uniformly sent to all UEs in the cell, which may prevent the flexible resource allocation provided by FD from being fully utilized.

[0009] Therefore, the present disclosure has been made in consideration of such circumstances, and aims to provide a base station and a wireless communication method that can realize flexible resource allocation using FD when informing a terminal that it will be operating in FD.

[0010] One aspect of the disclosure is a base station including a transmitter (radio signal transceiver 110) that notifies that the base station operates in a full duplex mode, in which transmission and reception are performed using overlapping resources in the time domain and the frequency domain, and a controller (controller 170) that instructs each terminal in the transmission and reception directions of the resources via terminal-specific parameters.

[0011] One aspect of the disclosure is a wireless communication method that notifies a terminal that it operates in a full duplex mode, performing transmission and reception using overlapping resources in the time domain and the frequency domain, and instructs each terminal in the transmission and reception directions of the resources via terminal-specific parameters.

[0012] FIG. 1 is a diagram showing an overall schematic configuration of a wireless communication system. FIG. 2 is a diagram showing frequency ranges used in the wireless communication system. FIG. 3 is a diagram showing an example configuration of wireless frames, subframes, slots, and symbols used in the wireless communication system. FIG. 4 is a functional block diagram of a base station. FIG. 5 is a functional block diagram of a terminal. FIG. 6 is a diagram showing recognition of a base station operating in FD and recognition of a terminal operating in HD. FIG. 7 is a diagram showing an example of wireless communication between a base station operating in FD and a terminal operating in HD. FIG. 8 is a diagram showing recognition of a base station operating in SBFD. FIG. 9 is a diagram showing an example of wireless communication between a base station operating in FD and SBFD and a terminal operating in HD. FIG. 10 is a diagram showing an example of the hardware configuration of a base station and a terminal. FIG. 11 is a diagram showing an example of the configuration of a vehicle.

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

[0014] (1) Configuration of Wireless Communication System The wireless communication system 10 shown in Fig. 1 is a wireless communication system conforming to a method called 5G. Alternatively, the wireless communication system 10 may be a wireless communication system conforming to a method called Beyond 5G, 5G Evolution, or 6G.

[0015] The wireless communication system 10 can support Massive Multiple-Input Multiple-Output (Massive MIMO), which generates more directional beams by controlling wireless signals transmitted from multiple antenna elements, Carrier Aggregation (CA), which uses multiple component carriers (CCs) as a bundle, and Dual Connectivity (DC), which enables simultaneous communication with two base stations.

[0016] As shown in FIG. 1 , the wireless communication system 10 includes a Next Generation-Radio Access Network (NG-RAN) 20, a base station (hereinafter also referred to as a gNodeB (gNB)) 100 connected to the NG-RAN 20, and a terminal (hereinafter also referred to as a user equipment (UE)) 200 that performs wireless communication with the gNB 100. The NG-RAN 20 is connected to a core network (CN) not shown. The NG-RAN 20 and the CN may be simply referred to as a "network." The gNB 100 may also be considered to be included in the network. Note that the specific configuration of the wireless communication system 10, for example, the number of gNBs 100 and UEs 200, is not limited to the example shown in FIG. 1 .

[0017] The wireless communication system 10 can support various duplexing methods. First, the wireless communication system 10 supports time division duplexing (TDD) and frequency division duplexing (FDD). These duplexing methods may also be called half duplexing (HD). The wireless communication system 10 also supports a duplexing method that enables simultaneous use of downlink (DL) and uplink (UL) by recognizing the time division duplexing (TDD) band as multiple subbands. This duplexing method may also be called SBFD.

[0018] Furthermore, the wireless communication system 10 supports full duplex (FD) in which transmission and reception are performed using overlapping resources in the time domain and the frequency domain. FD may be interpreted as realizing duplex in the frequency domain based on time division duplex (TDD), or may be interpreted as realizing duplex in the time domain based on frequency division duplex (FDD).

[0019] Note that when SBFD is applied in the wireless communication system 10, even if the recognition of the gNB100 is SBFD, the recognition of the UE200 is DL or UL. That is, even if the gNB100 operates according to SBFD, the UE200 operates according to HD. Similarly, when FD is applied in the wireless communication system 10, even if the recognition of the gNB100 is FD, the recognition of the UE200 is DL or UL. That is, even if the gNB100 operates according to FD, the UE200 operates according to HD.

[0020] Hereinafter, a symbol / slot to which FD is applied as a duplexing method may be referred to as an FD symbol / slot, and a symbol / slot to which SBFD is applied may be referred to as an SBFD symbol / slot.

[0021] "FD is applied" may be interpreted as FD being applied to at least a part of the scheduling. That is, even when FD is applied, FD symbols / slots may be mixed with the above-mentioned SBFD symbols / slots and HD symbols / slots. Similarly, "SBFD is applied" may be interpreted as SBFD being applied to at least a part of the scheduling. That is, even when SBFD is applied, SBFD symbols / slots may be mixed with the above-mentioned FD symbols / slots and HD symbols / slots.

[0022] The wireless communication system 10 may also support multiple frequency ranges (FR). That is, as shown in Fig. 2, the wireless communication system 10 may support the following FRs: FR1: 410 MHz to 7.125 GHz FR2-1: 24.25 GHz to 52.6 GHz FR2-2: Over 52.6 GHz to 71 GHz

[0023] In FR1, a subcarrier spacing (SCS) of 15, 30, or 60 kHz and a bandwidth (BW) of 5 to 100 MHz may be used, while in FR2-1, an SCS of 60 or 120 kHz (including 240 kHz) and a BW of 50 to 400 MHz may be used.

[0024] In FR2-2, to avoid an increase in phase noise, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) or Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) with a larger SCS may be applied.

[0025] 3, one slot in the wireless communication system 10 is composed of 14 symbols. If this configuration is maintained, the larger (wider) the SCS, the shorter the symbol period (and slot period). Note that the SCS is not limited to the frequencies shown in FIG. 3 and may be, for example, 480 kHz, 960 kHz, or other frequencies.

[0026] Furthermore, the number of symbols constituting one slot does not necessarily have to be 14, but may be, for example, 28 or 56. Furthermore, the number of slots per subframe may differ depending on the SCS.

[0027] (2) Functional block configuration of wireless communication system (2.1) Functional block configuration of base station As shown in Figure 4, the gNB 100 includes a wireless signal transceiver unit 110, an amplifier unit 120, a modulation / demodulation unit 130, a control signal / reference signal processing unit 140, an encoding / decoding unit 150, a data transceiver unit 160, and a control unit 170.

[0028] The radio signal transmitting / receiving unit 110 transmits and receives radio signals to and from the UE 200. The radio signal transmitting / receiving unit 110 may be configured with a transmitting unit that transmits radio signals to the UE 200 and a receiving unit that receives radio signals from the UE 200. "Transmit" may be interpreted as "configuration," "instruction," "notification," etc. Furthermore, "reception" may be interpreted as "reported" or "notified," etc. Furthermore, "configuration" may be realized by configuration information (information element (IE)) of a radio resource control (RRC) layer, and "instruction" may be realized by a control element (CE) or downlink control information (DCI) of a medium access control (MAC) layer.

[0029] The radio signal transceiver 110 of the embodiment can notify that the gNB 100 operates in a full duplex mode (hereinafter also referred to as FD or first duplex mode), in which transmission and reception are performed using overlapping resources in the time domain and frequency domain.

[0030] In this specification, FD may be interpreted as a system that realizes duplexing in the frequency domain based on time division duplexing (TDD), or as a system that realizes duplexing in the time domain based on frequency division duplexing (FDD). Therefore, FDD and TDD in this specification are not interpreted as FD, but as half duplexing (HD). Note that HD exemplified in the operation example is TDD.

[0031] FD may be achieved by reducing self-interference. For example, FD may be achieved by the gNB100 distributing highly linear beams, such as terahertz waves, to each UE200. FD may also be achieved by spatially separating the transmitter and receiver in the gNB100. In other words, FD may be achieved by performing wireless communication for each space. On the other hand, FD may also be achieved by an approach that does not reduce self-interference. For example, FD may be achieved by a gNB100 understanding the scheduling of other gNB100 and canceling all DL signals from the other gNB100. This allows the gNB100 to extract (decode) UL signals from a mixture of DL and UL signals.

[0032] The radio signal transceiver 110 of the embodiment can notify that the gNB 100 operates in SBFD (hereinafter also referred to as the second duplexing scheme). SBFD is a duplexing scheme that enables simultaneous use of DL and UL by recognizing the TDD band as multiple subbands. In other words, SBFD is a duplexing scheme that transmits or receives signals for each subband that constitutes the TDD band. Furthermore, SBFD can be said to be a duplexing scheme in which multiple subbands are defined within the TDD band, or a duplexing scheme in which UL and DL are allocated non-overlapping in the frequency direction within a TDD unit time (e.g., symbol / slot).

[0033] The radio signal transmitting and receiving unit 110 according to the embodiment can notify the position of the subband in SBFD.

[0034] The amplifier unit 120 is configured by a power amplifier (PA) / low noise amplifier (LNA), etc. The amplifier unit 120 amplifies the radio signal output from the radio signal transmitting / receiving unit 110. The amplifier unit 120 also amplifies the radio signal output from the modulation / demodulation unit 130.

[0035] The modem unit 130 performs data modulation / demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (UE 200 or another UE). CP-OFDM / DFT-S-OFDM may be applied to the modem unit 130. Furthermore, DFT-S-OFDM may be used not only for the uplink (UL) but also for the downlink (DL).

[0036] The control signal and reference signal processor 140 performs processing related to control signals transmitted and received between the UE 200, such as radio resource control (RRC) signaling.

[0037] The control signal / reference signal processing unit 140 performs processing related to reference signals transmitted and received between the UE 200, such as a Demodulation Reference Signal (DMRS), a Phase Tracking Reference Signal (PTRS), a Channel State Information-Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), and a Positioning Reference Signal (PRS).

[0038] The channels include control channels and data channels. The control channels include a physical uplink control channel (PUCCH), a physical downlink control channel (PDCCH), a physical random access channel (PRACH), a physical broadcast channel (PBCH), etc. The data channels include a physical uplink shared channel (PUSCH), a physical downlink shared channel (PDSCH), etc.

[0039] The encoding / decoding unit 150 performs division / concatenation and coding / decoding of data included in a radio signal for each predetermined communication destination (UE 200 or another UE).

[0040] Specifically, the encoding / decoding unit 150 decodes the data output from the modem unit 130 and concatenates the decoded data. In addition, the encoding / decoding unit 150 divides the data output from the data transmitter / receiver 160 into pieces of a predetermined size and performs coding on the divided data.

[0041] The data transmitter / receiver 160 assembles and disassembles data units (Protocol Data Units (PDUs) / Service Data Units (SDUs)) that make up data between each layer. The multiple layers include a Medium Access Control (MAC) layer, a Radio Link Control (RLC) layer, and a Packet Data Convergence Protocol (PDCP) layer. The data transmitter / receiver 160 also performs data error correction and retransmission control based on Hybrid Automatic Repeat Request (HARQ).

[0042] The control unit 170 controls the gNb 100. The control unit 170 controls, for example, the transmission and reception of radio signals by the radio signal transceiver unit 110, the amplification by the amplifier unit 120, the data modulation / demodulation by the modem unit 130, the signal processing by the control signal and reference signal processor 140, the coding / decoding by the encoder / decoder unit 150, and the assembly / disassembly of data units by the data transceiver unit 160. The control unit 170 also performs scheduling for the UE 200.

[0043] The control unit 170 of the embodiment can instruct the transmission and reception directions of each UE 200 in the resources (hereinafter also referred to as FD resources) that overlap in the time domain and frequency domain described above, via a terminal-specific parameter.

[0044] The control unit 170 of the embodiment can instruct the transmission and reception directions of each UE 200 not only in the FD resource but also in the above-described SBFD subbands via terminal-specific parameters.

[0045] In this specification, the transmission / reception direction is not limited to UL / DL, and may be interpreted as including Flexible (F). In the case of F, "direction" may be interpreted as "state." The instruction may be realized by broadcast information such as System Information Block (SIB), semi-static signaling such as RRC configuration, or dynamic signaling such as DCI and MAC CE.

[0046] The terminal-specific parameters are parameters that are set or indicated for each UE 200. The terminal-specific parameters may be interpreted as terminal-specific signaling, terminal-specific indicators, terminal-specific setting information, or the like.

[0047] The terminal-specific parameter may be, for example, a terminal-specific slot format indicator (hereinafter also referred to as US-SFI). Similar to a conventional SFI, the US-SFI indicates the transmission and reception direction of symbols constituting a slot, i.e., the transmission and reception direction of symbols as seen from the UE 200. The US-SFI may be included in the terminal-specific DCI.

[0048] The control unit 170 may indicate the location of FD resources in the time domain and the frequency domain via a terminal-specific parameter. In this case, the terminal-specific parameter may be included in an RRC IE or may semi-statically indicate the location of FD resources. Specifically, the terminal-specific parameter may be an extension of conventional TDD-Config-Common and / or TDD-Config-Dedicated as a terminal-specific parameter, and may be conveniently referred to as FD-Config-Common and / or FD-Config-Dedicated. Furthermore, the terminal-specific parameter may be included in DCI or MAC CE or may dynamically indicate the location of FD resources. The terminal-specific parameter that dynamically indicates the location of FD resources may be conveniently referred to as Full Duplex Indicator / Indication (FDI).

[0049] In addition, when the instruction is implicit, the symbol / slot to which the FD is applied may be a symbol / slot that satisfies at least one of the following conditions. Condition 1: Symbol / slot configured to at least one of DL / F / UL by TDD-Config-Common (and / or TDD-Config-Dedicated). Condition 2: Symbol / slot not configured to at least one of DL / F / UL by TDD-Config-Common (and / or TDD-Config-Dedicated). Condition 3: Symbol / slot configured to at least one of DL / F / UL by Slot Format Indicator (SFI) (DCI format 2_0). Condition 4: Symbol / slot not configured to at least one of DL / F / UL by SFI (DCI format 2_0). Condition 5: Symbol / slot configured for synchronization signal block (SSB) reception. Condition 6: Symbol / slot not configured for SSB reception. Condition 7: Symbol / slot configured for type-0 PDCCH monitoring (or CORESET#0 symbol). Condition 8: Symbol / slot not configured for type-0 PDCCH monitoring (or CORESET#0 symbol). Condition 9: Valid PRACH Symbols / slots included in the occasion Condition 10: Symbols / slots not included in a valid PRACH occasion

[0050] (2.2) Functional Block Configuration of Terminal As shown in FIG. 5, the UE 200 includes a radio signal transmitting / receiving unit 210 and a control unit 220.

[0051] The radio signal transceiver 210 transmits and receives radio signals to and from the gNB 100. The radio signal transceiver 210 may be configured with a transmitter that transmits radio signals to the gNB 100 and a receiver that receives radio signals from the gNB 100. "Transmit" may be interpreted as "report" or "notification," etc. "Receive" may be interpreted as "configured," "instructed," "notified," etc. "Configuration" may be realized by configuration information (information element (IE)) of the radio resource control (RRC) layer, and "instruction" may be realized by a control element (CE) or downlink control information (DCI) of the medium access control (MAC) layer.

[0052] The radio signal transceiver 210 of the embodiment may transmit UE capability information related to the above-described FD operation or SBFD operation of the gNB 100. Details of the UE capability information will be described in detail in the section on operation examples.

[0053] The radio signal transceiver unit 210 of the embodiment may be notified that the gNB100 operates in FD, and may further be instructed on the transmission and reception direction (DL / UL) in the FD resource.

[0054] The radio signal transmitting and receiving unit 210 of the embodiment may be notified of the positions of the FD resources in the time direction and the frequency direction. Furthermore, the radio signal transmitting and receiving unit 210 of the embodiment may be notified of the positions of the subbands in SBFD.

[0055] The control unit 220 controls the UE 200. The control unit 220 controls, for example, the transmission and reception of radio signals by the radio signal transmission and reception unit 210.

[0056] In the embodiment, the control unit 220 may cause the radio signal transceiver unit 210 to perform transmission and reception in accordance with an instruction on the transmission and reception direction (DL / UL) in the FD resource or the SBFD subband.

[0057] (3) Operation of the wireless communication system (3.1) Issues (3.1.1) Issue 1 When gNBs operate in FD mode, it has not been considered whether new signaling should be introduced for UEs to support this FD operation. Furthermore, when existing signaling is reused, it has not been considered whether UE operation should be extended.

[0058] (3.1.2) Issue 2: When gNB operates in FD mode, the combination with SBFD has not been considered. For example, when operating in FD mode, the impact of self-interference is thought to be greater than when operating in SBFD mode, but this issue has not been considered.

[0059] (3.2) Operational Example (3.2.0) Assumptions The assumptions of the operational example will be described with reference to Figure 6. As shown in Figure 6, the gNB100 in the operational example can operate in FD. Operating in FD may mean operating only in FD, or as shown in Figure 6, it may mean operating using FD and HD in combination. Furthermore, operating in FD may mean operating using FD and SBFD in combination, or it may mean operating using FD, SBFD, and HD in combination (see Figure 9). Note that FD is assumed to apply to the entire bandwidth (BW) available as a resource, not just a portion of the BW. On the other hand, the UE200 is assumed to operate only in HD.

[0060] Figure 6 shows an example in which the gNB100 operates in FD mode for two symbols / slots out of four consecutive symbols / slots. The gNB100 can individually set or instruct DL / UL for UE#1 and UE#2 for the two symbols / slots operating in FD. Note that the example shown in Figure 6 is just one example, and the DL / UL may be the same for UE#1 and UE#2 for the two symbols / slots in which the gNB100 operates in FD. Note that in Figures 6 and 7, symbols / slots marked with "D" are DL symbols / slots, and symbols / slots marked with "U" are UL symbols / slots.

[0061] (3.2.1) Operation Example 1 Operation example 1 will be described with reference to Figure 7. In operation example 1, gNB100 operates in FD and can also operate in a combination of FD and HD. Furthermore, as described in each option below, the FD operation of gNB100 may be transparent or non-transparent to UE200. That is, the FD operation of gNB100 may or may not be notified to UE200. Note that Figure 7 shows that for Flexible (F) symbols / slots (symbols / slots marked with "F" in the figure), gNB100 regards them as FD symbols / slots, while UE200 (UE#1, UE#2 in the figure) regards them as HD symbols / slots (see option 3).

[0062] (3.2.1.1) Option 1: The FD operation of gNB100 is transparent to UE200. That is, UE200 is not aware that gNB100 operates in FD.

[0063] When the gNB100 operates in this transparent FD mode, the UE200's operation (e.g., DL reception and / or UL transmission) cannot process FD symbols and HD symbols separately. Such separate processing may be beneficial, for example, when considering the possibility of the gNB100 separating transmission and reception for FD operation.

[0064] (3.2.1.2) Option 2: The FD operation of gNB100 is non-transparent to UE200. That is, UE200 is aware that gNB100 operates in FD. However, UE200 is not aware of the time and / or frequency domain resources in FD operation.

[0065] The FD operation of the gNB100 may be notified in advance via RRC / MAC CE / DCI, etc., but may also be notified by an additional / new UE-specific signal (the above-mentioned terminal-specific parameter) itself, as described below, instead of such advance notification. That is, the UE200 can recognize that the gNB100 is operating in FD by receiving this additional / new UE-specific signal or by being instructed by this additional / new UE-specific signal about the actual direction (DL / UL) seen from the UE200. Note that the UE200 may recognize that the gNB100 is operating in HD when the actual direction (DL / UL) seen from the UE200 is instructed by a conventional SFI.

[0066] To enable the gNB100 to operate in FD (and HD), conventional NR TDD configuration information (TDD-Config-Common and / or TDD-Config-Dedicated) may be used (and dynamic SFI using DCI format 2_0 may also be used). In addition, additional / new UE-specific signaling may be used. SFI is not flexible enough for the gNB100 to operate in FD. This is because DCI format 2_0 is a group-common indication, but the actual direction (DL / UL) of the FD symbol may be different for each UE200. Therefore, a UE-specific signaling indicating the actual direction (DL / UL) as seen from the UE200 is useful.

[0067] As described above, in Option 2, when the gNB 100 operates in FD, a UE-specific signal that dynamically indicates the actual direction (DL / UL) to the UE 200 may be newly supported. The UE-specific signal may be called, for example, a UE specific SFI (US-SFI).

[0068] The US-SFI may be via a UE-specific DCI or MAC CE. If via a UE-specific DCI, the UE-specific DCI may be based on an existing DCI format or a new DCI format and may include a Cyclic Redundancy Check (CRC) scrambled by an existing Radio Network Temporary Identifier (RNTI) (e.g., Cell-RNTI (C-RNTI)) or a new RNTI. Whether and when to monitor the US-SFI may also be configured by the RRC.

[0069] The content / details of the US-SFI indication may be similar to that of the group-common SFI via DCI format 2_0. For example, the US-SFI can indicate the direction or state (D / U( / F)) for each symbol (or for each symbol configured as F). The UE 200 does not expect the US-SFI to indicate U( / F) for a quasi-static DL symbol or D( / F) for a quasi-static UL symbol. When the US-SFI indicates D / U for a quasi-static F symbol, the actual direction of the symbol is DL / UL. That is, the UE 200 performs only DL reception or UL transmission in the symbol. When the US-SFI indicates F for a quasi-static F symbol (if such indication is supported or permitted), Opt-a: The symbol is considered as Not available for the configured DL / UL. The UE 200 does not perform the configured DL reception or UL transmission in the symbol. The UE 200 can perform dynamically scheduled DL reception and dynamically scheduled UL transmission in the symbol. Opt-b: The symbol is considered available for DL / UL. The UE 200 can perform configured DL reception, dynamically scheduled DL reception, configured UL transmission, and dynamically scheduled UL transmission in the symbol.

[0070] If the US-SFI is configured to be monitored based on a predetermined period and the UE 200 does not detect DCI for a predetermined period, Alt-a: The UE 200 assumes that the quasi-static F symbol may be used for either UL transmission or DL ​​reception. Alt-b: The UE 200 assumes that the quasi-static F symbol is not available for either UL transmission or DL ​​reception. Alt-c: If the UE 200 is configured to monitor the conventional SFI, it follows the conventional SFI instructions.

[0071] Regarding the interaction between US-SFI indications and conventional SFI indications, Alt 1: When UE 200 is configured to monitor a US-SFI, it is not expected that it will also be configured to monitor a group-common SFI via DCI format 2_0 at the same time. Alt 2: When UE 200 is configured to monitor a US-SFI, it may also be configured to monitor a group-common SFI via DCI format 2_0 at the same time. In this case, Alt 2-1: UE 200 always follows the US-SFI and ignores group-common SFI via DCI format 2_0. Alt 2-2: US-SFI can override the symbol / slot indicated as F by the group-common SFI via DCI format 2_0. - When a symbol / slot indicated as F by the group-common SFI via DCI format 2_0 is indicated as D ( / U) by the US-SFI, UE200 can perform DL reception (or UL transmission) at that symbol / slot. - UE200 does not expect a symbol / slot indicated as U by the group-common SFI via DCI format 2_0 to be indicated as D by the US-SFI. Furthermore, UE200 does not expect a symbol / slot indicated as D by the group-common SFI via DCI format 2_0 to be indicated as U by the US-SFI. Furthermore, UE200 does not expect a symbol / slot indicated as D or U by the group-common SFI via DCI format 2_0 to be indicated as F by the US-SFI.

[0072] (3.2.1.3) Option 3: The FD operation of the gNB100 is non-transparent to the UE200. That is, the UE200 is aware that the gNB100 operates in FD. Furthermore, as shown in Fig. 7, the UE200 is also aware of the time and / or frequency domain resources for FD operation.

[0073] (3.2.1.3.1) Option 3-1 To enable the gNB100 to operate in FD (and HD), the conventional NR TDD configuration information (TDD-Config-Common and / or TDD-Config-Dedicated) may be reused (and the dynamic SFI according to DCI format 2_0 may also be reused). This may enhance the operation of the UE200. For example, from the perspective of the gNB100, FD symbols / slots may be indicated by being configured as F symbols / slots.

[0074] In option 3-1, the FD operation of the gNB100 is notified in advance via RRC / MAC CE / DCI, etc. Specifically, as described below, the UE200 is notified that the F slot / symbol will be replaced with the FD symbol / slot. That is, the UE200 can recognize that the gNB100 is operating in FD by being notified that the F slot / symbol will be replaced. Alternatively, when the UE200 reports via a UE capability report that the F slot / symbol replacement is possible, the UE200 may always replace the F slot / symbol. In this case, the UE200 may also recognize that the gNB100 is operating in FD.

[0075] When the new parameter "fullduplexmode" is configured via RRC or SIB, the UE interpretation / behavior based on existing signaling may be extended as follows:

[0076] <Interpretation of quasi-static TDD configuration> UE 200 regards a symbol / slot configured as F as an FD symbol / slot. UE 200 regards a symbol / slot configured as D / U as an HD symbol / slot.

[0077] <Interpretation of a dynamic SFI indication of D / U> Alt 1: UE 200 regards a symbol / slot indicated as D / U by a dynamic SFI as a D / U symbol / slot of HD. Note that an F symbol / slot of quasi-static FD may be converted to an HD symbol / slot by a dynamic SFI indicating D / U. Alt 2: UE 200 regards a quasi-static F symbol / slot indicated as D / U by a dynamic SFI as an FD symbol / slot. In this case, the actual direction of the FD symbol / slot for UE 200 is D / U indicated by the dynamic SFI. Note that a dynamic SFI indicating D / U for a quasi-static FD symbol / slot is intended to indicate the actual reporting of the FD symbol / slot instead of converting it to an HD symbol / slot.

[0078] <Interpretation of Dynamic SFI Indication of F> Alt-a: UE200 regards the symbol / slot indicated as F by the dynamic SFI as an FD symbol / slot. In this case, the actual direction of the FD symbol / slot for UE200 may be determined / scheduled more flexibly. Alt-b: UE200 regards the symbol / slot indicated as F by the dynamic SFI as an HD F symbol / slot. In this case, the actual direction of the FD symbol / slot for UE200 may be determined / scheduled more flexibly. Variation: Potential extension of UE200 operation in Alt-a / Alt-b: UE200 may be able to perform configured UL transmission or configured DL reception in the symbol / slot indicated as F by the dynamic SFI.

[0079] <UE behavior for quasi-static F symbols / slots when SFI is configured but monitoring / detection is not performed / failed> Opt-1: Same behavior as conventional Opt-2: Same behavior as quasi-static F symbols / slots when SFI is not configured For example, as in the above-mentioned <Interpretation of quasi-static TDD configuration>, UE 200 regards symbols / slots configured as F as FD symbols / slots, and symbols / slots configured as D / U as HD symbols / slots.

[0080] <Variations> The number of switching / transition points from one of FD symbols / slots or HD symbols / slots to the other may be up to X. X may be defined by the standard or may be determined by UE capability information.

[0081] (3.2.1.3.2) Option 3-2 Additional / new semi-static signaling may be introduced. Cell-common and / or UE-specific RRC configuration (e.g., may be called FD-Config-Common and / or FD-Config-Dedicated) may be supported to indicate semi-static FD symbols / slots. This may enhance the operation of UE 200. Note that the UE-specific RRC configuration may be interpreted as corresponding to the terminal-specific parameters described above.

[0082] Notification of FD operation of gNB100 in option 3-2 may be realized in the same manner as notification of FD operation of gNB100 in option 2 described above.

[0083] Example 1: A new cell-common or UE-specific RRC configuration may indicate FD or HD for symbols / slots within each TDD configuration pattern period. In this case, UE 200 must follow the legacy TDD configuration (TDD-Config-Common and / or TDD-Config-Dedicated) and the new FD configuration.

[0084] - The parameters "FD-Config-Common and / or FD-Config-Dedicated" may indicate FD or HD for each symbol / slot or only for symbols / slots that are configured / indicated as F by conventional TDD configuration / conventional TDD signaling (conventional TDD configuration + dynamic SFI).

[0085] If the indication is for each symbol / slot, for a symbol / slot that is configured / indicated as D / U by conventional TDD configuration / conventional TDD signaling, the parameters "FD-Config-Common and / or FD-Config-Dedicated" may or may not be allowed / expected to indicate FD. Note that if a symbol / slot is configured / indicated as D / U by conventional TDD configuration / conventional TDD signaling and is indicated as FD by the parameters "FD-Config-Common and / or FD-Config-Dedicated," UE 200 regards the symbol / slot as an FD symbol / slot, and the actual direction of the FD symbol / slot for UE 200 is regarded as D / U according to conventional TDD signaling. Alternatively, in this case, UE 200 regards the symbol / slot as an HD D / U symbol / slot.

[0086] - If a symbol / slot is configured / indicated as F by traditional TDD configuration / traditional TDD signaling and is indicated as FD by the parameters "FD-Config-Common and / or FD-Config-Dedicated", UE200 considers that symbol / slot to be an FD symbol / slot, and the actual direction of the FD symbol / slot for UE200 is determined by other means, rules, and instructions.

[0087] Example 2: A new (UE-specific) RRC configuration may indicate FD or HD and indicate the actual direction of the FD symbols / slots as seen by the UE 200 (the UE 200 does not have to follow the traditional TDD configuration).

[0088] The parameters "FD-Config-Common" and / or "FD-Config-Dedicated" may indicate FD-D / FD-U (FD-F) or HD (HD-D / HD-U / HD-F) for each symbol / slot, or only for symbols / slots that are configured / indicated as F (and / or D / U) by conventional TDD signaling. Note that FD-D / FD-U / FD-F refer to FD symbols / slots whose actual direction as seen from the UE 200 is D / U / F. Also, HD-D / HD-U / HD-F refer to HD D / U / F symbols / slots.

[0089] If the indication is for each symbol / slot, then for a symbol / slot that is configured / indicated as D / U by the legacy TDD configuration / legacy TDD signaling, the parameters "FD-Config-Common and / or FD-Config-Dedicated" may or may not be allowed / expected to indicate FD-D / FD-U ( / FD-F) or HD (HD-D / HD-U / HD-F). Note that if a symbol / slot is configured / indicated as D / U by the legacy TDD configuration / legacy TDD signaling and is indicated as FD-D / FD-U ( / FD-F) by the parameters "FD-Config-Common and / or FD-Config-Dedicated", then UE 200 shall consider that symbol / slot to be an FD symbol / slot, and shall consider the actual direction of the FD symbol / slot for UE 200 to be D / U ( / F) according to the legacy TDD signaling. Alternatively, in this case, the UE 200 may consider the symbol / slot to be a D / U( / F) symbol / slot of the HD.

[0090] (3.2.1.3.3) Option 3-3 Additional / new dynamic signaling may be used to realize FD (and HD) and enhance the operation of UE 200. Cell-wide and / or UE-specific dynamic signaling (e.g., DCI or MAC CE) may be supported to dynamically indicate FD symbols / slots. Note that UE-specific dynamic signaling may be understood to correspond to the terminal-specific parameters described above.

[0091] Notification of FD operation of gNB100 in Option 3-3 may be realized in the same manner as notification of FD operation of gNB100 in Option 2 described above.

[0092] Example 1: A new cell-wide or UE-specific dynamic indication (e.g., referred to as FDI) may indicate FD or HD for a symbol / slot. In this case, UE 200 must follow the legacy TDD configuration and the new FD configuration.

[0093] The FDI may indicate FD or HD for each symbol / slot or for only the quasi-static FD symbol / slot. Note that the quasi-static FD symbol / slot may be a symbol / slot configured / determined by a new RRC configuration such as Option 3-2, or may be a symbol / slot configured as F by a conventional TDD configuration. The UE 200 may or may not expect the FDI to convert the quasi-static HD symbol / slot to a dynamic FD symbol / slot. The UE 200 may or may not expect the FDI to convert the quasi-static FD symbol / slot to a dynamic HD symbol / slot.

[0094] Variation: UE 200 may or may not be configured to monitor FDI and simultaneously expect to monitor SFI via DCI format 2_0. If so, Alt 1: FDI may be applied to quasi-static FD symbols / slots and SFI may be applied to quasi-static HD symbols / slots. Alt 2: First, FDI is applied to determine the type of symbol / slot (FD or HD). Then, SFI is applied only to the determined HD symbols / slots. Alt 3: FDI is applied to determine the type of symbol / slot (FD or HD). For the determined FD symbols / slots, SFI is applied to determine the actual direction of that symbol / slot as seen by UE 200. For HD symbols / slots, SFI is applied as before.

[0095] Example 2: A new cell-wide or UE-specific dynamic indication (which may be called, for example, FDI) may indicate FD or HD and indicate the actual direction of the FD symbol / slot as seen by UE 200 (UE 200 may not follow the traditional TDD configuration).

[0096] The FDI may indicate FD-D / FD-U ( / FD-F) or HD (HD-D / HD-U / HD-F) for each symbol / slot or for quasi-static FD symbols / slots only. Note that FD-D / FD-U / FD-F refer to FD symbols / slots whose actual direction as seen from the UE 200 is D / U / F. HD-D / HD-U / HD-F refer to HD D / U / F symbols / slots.

[0097] The UE 200 may or may not expect the FDI to convert quasi-static HD symbols / slots to dynamic FD symbols / slots. The UE 200 may or may not expect the FDI to convert quasi-static HD D / U symbols / slots to dynamic FD-D / FD-U ( / FD-F) symbols / slots. The UE 200 may or may not expect the FDI to convert quasi-static HD F symbols / slots to dynamic FD-D / FD-U ( / FD-F) symbols / slots.

[0098] The UE 200 may or may not expect the FDI to convert quasi-static FD symbols / slots to dynamic HD symbols / slots. The UE 200 may or may not expect the FDI to convert quasi-static FD-D / FD-U symbols / slots to dynamic HD D / U( / F) symbols / slots. The UE 200 may or may not expect the FDI to convert quasi-static FD-F symbols / slots to dynamic HD D / U( / F) symbols / slots.

[0099] Variation: UE 200 may or may not be configured to monitor FDI and simultaneously configure to monitor SFI via DCI format 2_0. If so, Alt a: FDI may be applied to quasi-static FD symbols / slots and SFI may be applied to quasi-static HD symbols / slots. Alt b: FDI is applied to determine the type of symbol / slot (FD or HD), and SFI is applied only to the determined HD symbols / slots.

[0100] (3.2.1.3.4) Variations of Option 3 Option 3-2 and Option 3-3 may be combined.

[0101] (3.2.1.4) Option 4 For option 3, if UE 200 is aware of FD symbols / slots and HD symbols / slots, it is possible to extend the transmission and reception of UE 200 in FD symbols / slots and / or HD symbols / slots.

[0102] The motivation for extending the UE 200's transmission and reception operations in FD symbols / slots and / or HD symbols / slots is explained. In the transparent FD case (when the UE 200 is not informed of FD operation), there is a problem in that it is not possible to separately process the UE operation (e.g., DL reception and / or UL transmission) in FD symbols / slots and / or HD symbols / slots. Separately processing the UE operation (e.g., DL reception and / or UL transmission) in FD symbols / slots and / or HD symbols / slots is beneficial in some cases. For example, considering the possibility of the gNB 100 separating transmission and reception for FD operation, the gNB 100's receive panel / antenna may be different for FD symbols / slots and HD symbols / slots. For example, only half of the receive panel may be used for FD symbols / slots.

[0103] Enhancements to the transmission and reception operations of UE 200 are described. DL reception or UL transmission in FD symbols / slots and / or HD symbols / slots is handled specially. For example, separate parameters (e.g., parameters related to the spatial / power domain) are used for PUCCH / PUSCH / SRS in FD symbols / slots and / or HD symbols / slots. DL / UL channels / signals with multiple repetitions may or may not support different numbers of repetitions in different types of symbols / slots (e.g., the number of repetitions in FD symbols / slots may be different from the number of repetitions in HD symbols / slots). Periodic / semi-persistent DL / UL channels / signals may or may not support transmission / reception opportunities of DL / UL channels / signals with different durations in different types of symbols / slots (e.g., the duration of FD symbols / slots may be different from the duration of HD symbols / slots). Transmission / reception opportunities for DL / UL channels / signals mapped to different types of symbols / slots may or may not be supported.

[0104] Variation: The number of switching / transition points from one FD symbol / slot to the other or the other HD symbol / slot in a given period (e.g., one TDD period, one slot period) may be up to X, where X may be defined by the standard or determined by UE capability information.

[0105] Variation: The guard period for switching between FD symbols / slots and HD symbols / slots may be defined by the standard, may be instructed by the gNB 100, or may be determined based on UE capability information (UE capability).

[0106] (3.2.2) Operation Example 2 Operation Example 2 will be described with reference to Figures 8 and 9. In Operation Example 2, the gNB100 can operate by combining the FD (and HD) described in the operation example with the SBFD described below.

[0107] 8 is a diagram showing an example of an SBFD symbol / slot. The SBFD symbol / slot may be interpreted as a symbol / slot that is configured / instructed to have a UL (and DL) subband for the gNB 100 to operate in SBFD. That is, the SBFD symbol / slot may be interpreted as a DL symbol / slot in TDD, as shown in FIG. 9, in which a part of the band of the DL symbol / slot is configured / instructed as a UL subband.

[0108] As shown in Figure 8, DL or UL is assigned to each subband constituting an SBFD symbol / slot. Hereinafter, a subband assigned DL is also referred to as a DL subband, and a subband assigned UL is also referred to as a UL subband. Note that in Figures 8 and 9, symbols / slots or subbands marked with "D" are DL symbols / slots or DL ​​subbands, and symbols / slots or subbands marked with "U" are UL symbols / slots or UL subbands.

[0109] (3.2.2.1) Option 1 The FD operation and SBFD subband location of gNB100 are transparent to UE200. That is, UE200 is not aware that gNB100 operates in FD or the SBFD subband location.

[0110] (3.2.2.2) Option 2 The FD operation of gNB100 is transparent to UE200. On the other hand, the subband location of SBFD is non-transparent to UE200. That is, UE200 is not aware that gNB100 operates in FD, but is aware of the subband location in SBFD symbols / slots.

[0111] (3.2.2.3) Option 3 The FD operation of gNB100 is non-transparent to UE200. On the other hand, the time and / or frequency domain resources in FD operation and the subband position of SBFD are transparent to UE200. That is, UE200 is aware that gNB100 operates in FD, but is unaware of the time and / or frequency domain resources in FD operation. Furthermore, UE200 is unaware of the subband position of SBFD.

[0112] Therefore, in option 3, the operation in option 2 of operation example 1 can be used.

[0113] (3.2.2.4) Option 4 The FD operation and SBFD subband locations of gNB100 are non-transparent to UE200. On the other hand, the time and / or frequency domain resources in FD operation are transparent to UE200. That is, UE200 is aware that gNB100 operates in FD and the SBFD subband locations, but is not aware of the time and / or frequency domain resources in FD operation.

[0114] Therefore, in Option 4, based on the operation in Option 2 of Operation Example 1, the signaling indicating the SBFD subband position may operate as shown below. Accordingly, the operation of UE 200 may be extended. Note that the signaling indicating the SBFD subband position may be that specified in Release 19 or later. The SBFD subband position may also be configured by RRC signaling. In this case, the subband position may be indicated by a start frequency, an end frequency, a center frequency, a band, or the like. The subband frequency may also be configured in granularity (unit) such as a subcarrier / resource block (RB) / resource block group (RBG) / subband (in the sense of multiple subbands constituting a wideband). Furthermore, the subband may be enabled / disabled via MAC CE / DCI, etc.

[0115] (3.2.2.4.1) Option 4-1 Conventional NR TDD configuration information (TDD-Config-Common and / or TDD-Config-Dedicated) and dynamic SFI using DCI format 2_0 may be used.

[0116] From the perspective of the gNB 100, a symbol / slot that is not an SBFD symbol / slot (hereinafter also referred to as a non-SBFD symbol / slot) may be set as an F symbol / slot, i.e., set as a non-SBFD F symbol / slot, thereby indicating an FD symbol / slot. From the perspective of the UE 200, the SFI may indicate the actual direction (DL / UL) seen from the UE 200 at this non-SBFD F symbol / slot (i.e., a non-SBFD symbol / slot seen from the gNB 100, which is an FD symbol / slot). In this situation, the UE 200 may operate as follows.

[0117] First, for non-SBFD symbols / slots, the operation of option 2 in operation example 1 may be applied.

[0118] Then, for SBFD symbols / slots, we may operate as follows:

[0119] - When the SFI indicates D ( / U), - Alt-a1: The UE 200 may consider the symbol / slot as an SBFD symbol / slot with the DL (or UL) subband actually used. The UE 200 may perform DL reception in the DL subband at the symbol / slot (or UL transmission in the UL subband). - Alt-a2: The UE 200 may consider the symbol / slot as a non-SBFD DL (or UL) symbol / slot and use its entire DL BWP (or UL BWP). The UE 200 may perform DL reception in the DL BWP at the symbol / slot (or UL transmission in the UL BWP). - Alt-a3: The UE 200 may not expect the SBFD symbol / slot to be indicated as D ( / U) by the SFI.

[0120] If the SFI indicates F, then: Alt-b1: The UE 200 may consider the symbol / slot as an SBFD symbol / slot. The UE 200 may operate in the same manner as for a conventional SBFD symbol / slot. Alt-b2: The UE 200 may consider the symbol / slot as a non-SBFD F symbol / slot. The UE 200 may perform DL reception scheduled or configured in the DL BWP at the symbol / slot, and UL transmission scheduled or configured in the UL BWP at the symbol / slot. Alt-b3: The UE 200 may not expect the SBFD symbol / slot to be indicated as F by the SFI. Alt-b4: The UE 200 may consider the symbol / slot as a NOT available (NA) symbol / slot for configured DL or UL. The UE 200 may not perform configured DL reception or configured UL transmission at the symbol / slot. The UE 200 may perform dynamically scheduled DL reception and dynamically scheduled UL transmission in that symbol / slot.

[0121] (3.2.2.4.2) Option 4-2: Conventional NR TDD configuration information (TDD-Config-Common and / or TDD-Config-Dedicated) may be used (and dynamic SFI using DCI format 2_0 may also be used). In addition, additional / new UE-specific signals may be used.

[0122] The motivation for introducing the additional / new UE-specific signal is the same as in Option 2 of Operation Example 1, and the additional / new UE-specific signal may be the same as in Option 2 of Operation Example 1. Therefore, the additional / new UE-specific signal may be called, for example, US-SFI. Taking into account the setting / indication of the subband positions of US-SFI and SBFD, UE 200 may operate as follows.

[0123] First, for non-SBFD symbols / slots, the operation of option 2 in operation example 1 may be applied.

[0124] Then, for SBFD symbols / slots, we may operate as follows:

[0125] - When the US-SFI indicates D ( / U), - Alt-a1: The UE 200 may regard the symbol / slot as an SBFD symbol / slot with the DL (or UL) subband actually used. The UE 200 may perform DL reception in the DL subband at the symbol / slot (or UL transmission in the UL subband). - Alt-a2: The UE 200 may regard the symbol / slot as a non-SBFD DL (or UL) symbol / slot and use its entire DL BWP (or UL BWP). The UE 200 may perform DL reception in the DL BWP at the symbol / slot (or UL transmission in the UL BWP). - Alt-a3: The UE 200 may not expect the US-SFI to indicate D ( / U) for the SBFD symbol / slot.

[0126] If the US-SFI indicates F, then: Alt-b1: The UE 200 may consider the symbol / slot as an SBFD symbol / slot. The UE 200 may operate in the same manner as for a conventional SBFD symbol / slot. Alt-b2: The UE 200 may consider the symbol / slot as a non-SBFD F symbol / slot. The UE 200 may perform DL reception scheduled or configured in the DL BWP at the symbol / slot, and may perform UL transmission scheduled or configured in the UL BWP at the symbol / slot. Alt-b3: The UE 200 may not expect the SBFD symbol / slot to be indicated as F by the US-SFI. Alt-b4: The UE 200 may consider the symbol / slot as a NOT available (NA) symbol / slot for configured DL or UL. The UE 200 may not perform configured DL reception or configured UL transmission at the symbol / slot. The UE 200 may perform dynamically scheduled DL reception and dynamically scheduled UL transmission in that symbol / slot.

[0127] (3.2.2.5) Option 5 The FD operation of gNB100 and the time and / or frequency domain resources in FD operation are non-transparent to UE200. On the other hand, the subband locations of SBFD are transparent to UE200. In other words, UE200 is aware that gNB100 operates in FD and the time and / or frequency domain resources in FD operation, but is not aware of the subband locations of SBFD.

[0128] Therefore, in option 5, the operations in option 3 (option 3-1 / 3-2 / 3-3) of operation example 1 and the operations in option 4 related to option 3 of operation example 1 can be used.

[0129] (3.2.2.6) Option 6 The FD operation of the gNB100 and the time and / or frequency domain resources in the FD operation are non-transparent to the UE200. Furthermore, as shown in Figure 9, the SBFD subband position is also non-transparent to the UE200. That is, the UE200 is aware that the gNB100 operates in FD mode, the time and / or frequency domain resources in the FD operation, and the SBFD subband position. Note that Figure 9, like Figure 7, shows that the gNB100 regards F symbols / slots as FD symbols / slots, while the UE200 (UE#1, UE#2, UE#3, and UE#4 in the figure) regards them as HD symbols / slots.

[0130] Therefore, in Option 6, based on the operation in Option 3 of Operation Example 1, the signaling indicating the SBFD subband position may operate as shown below. Accordingly, the operation of UE 200 may be extended. The signaling indicating the SBFD subband position may be that specified in Release 19 or later. The SBFD subband position may also be configured by RRC signaling. In this case, the subband position may be indicated by a start frequency, an end frequency, a center frequency, a band, or the like. The subband frequency may also be configured in granularity (units) such as a subcarrier, a resource block (RB), a resource block group (RBG), or a subband (in the sense of multiple subbands constituting a wideband). Furthermore, the subband may be enabled / disabled via MAC CE / DCI, etc.

[0131] (3.2.2.6.1) Option 6-1 Conventional NR TDD configuration information (TDD-Config-Common and / or TDD-Config-Dedicated) may be used (and dynamic SFI using DCI format 2_0 may also be used).

[0132] From the perspective of the gNB 100, the FD symbol / slot may be indicated by setting it as F symbol / slot. UE interpretation / operation based on existing signaling may be extended as follows.

[0133] <Interpretation of subband position signaling for quasi-static TDD configuration and SBFD> UE200 regards symbols / slots for which UL (and DL) subbands are configured / indicated in SBFD operation as SBFD symbols / slots. UE200 regards symbols / slots for which UL (and DL) subbands are not configured / indicated in SBFD operation (i.e., non-SBFD symbols / slots) and which are set to F as FD symbols / slots. UE200 also regards non-SBFD symbols / slots which are set to D / U as HD symbols / slots.

[0134] <Interpretation of dynamic SFI indication D / U> (When the target of the dynamic SFI indication is a non-SBFD symbol / slot) - The operation of option 3-1 in operation example 1 can be reused.

[0135] (When the dynamic SFI indication is for an SBFD symbol / slot) Alt-a1: The UE 200 may regard the symbol / slot as an SBFD symbol / slot with an actual DL (or UL) subband used. The UE 200 may perform DL reception on the DL subband of the symbol / slot (or UL transmission on the UL subband). Alt-a2: The UE 200 may regard the symbol / slot as a non-SBFD HD DL (or UL) symbol / slot and use its entire DL BWP (or UL BWP). Alt-a3: The UE 200 may regard the symbol / slot as a non-SBFD FD DL (or UL) symbol / slot and use its entire DL BWP (or UL BWP). Alt-a4: The UE 200 may not expect the SBFD symbol / slot to be indicated as D (or U) by the SFI.

[0136] <Interpretation of dynamic SFI instruction F> (When the target of the dynamic SFI instruction is a non-SBFD symbol / slot) - The operation of option 3-1 in operation example 1 can be reused.

[0137] (When the dynamic SFI indication is for an SBFD symbol / slot) - Alt-b1: The UE 200 may regard the symbol / slot as an SBFD symbol / slot (i.e., may perform DL reception in a DL subband or UL transmission in a UL subband). In this case, whether the DL subband or the UL subband is actually used may be determined or scheduled more flexibly. - Alt-b2: The UE 200 regards the symbol / slot indicated as F by the dynamic SFI as a non-SBFD FD symbol / slot. In this case, the actual direction of the FD symbol / slot may be determined / scheduled more flexibly. - Alt-b3: The UE 200 regards the symbol / slot indicated as F by the dynamic SFI as a non-SBFD HD symbol / slot. In this case, the actual direction of the HD symbol / slot may be determined / scheduled more flexibly. - Variation: The UE 200 may be capable of configured UL transmission or configured DL reception in the symbol / slot.

[0138] (3.2.2.6.2) Option 6-2: Conventional NR TDD configuration information (TDD-Config-Common and / or TDD-Config-Dedicated) and / or dynamic SFI via DCI format 2_0 may be used. In addition, additional / new semi-static signaling may be used.

[0139] Similar to option 3-2 of operation example 1, new cell-common and / or UE-specific RRC configurations (which may be called, for example, FD-Config-Common and / or FD-Config-Dedicated) may be used to indicate quasi-static FD symbols / slots.

[0140] UE 200 may not expect that a UL subband is configured for a symbol / slot by the SBFD configuration and at the same time that the UE 200 is configured to an FD symbol / slot by the additional / new quasi-static signaling described above.

[0141] For non-SBFD symbols / slots, the UE interpretation / operation described in Option 3-2 of Operation Example 1 may be applied, and for SBFD symbols / slots, the SBFD operation specified in Release 19 and later may be applied. In addition, for SBFD symbols / slots, the following SBFD operation may be performed.

[0142] For an SBFD symbol / slot in which a UL subband is set to a DL symbol / slot, UE 200 performs a transmission operation when resources are set to the UL subband, and performs a reception operation when resources are set to the DL (DL subband). Also, when different parameters (e.g., transmission power) are set for non-SBFD symbols / slots and SBFD symbols / slots, UE 200 uses the parameters set for the SBFD symbol / slot.

[0143] (3.2.2.6.3) Option 6-3: Conventional NR TDD configuration information (TDD-Config-Common and / or TDD-Config-Dedicated) and / or dynamic SFI using DCI format 2_0 may be used. In addition, additional / new dynamic signaling may be used to realize FD (and HD).

[0144] Similar to option 3-3 of operation example 1, cell-wide and / or UE-specific dynamic signaling (e.g., DCI or MAC CE) may be used to dynamically indicate the FD symbol / slot.

[0145] First, for non-SBFD symbols / slots, the UE interpretation / operation described in option 3-3 of operation example 1 may be applied.

[0146] Next, for SBFD symbols / slots, a new cell-wide or UE-specific dynamic indication (e.g., which may be referred to as FDI) may indicate FD or HD (or SBFD) for the symbol / slot. The FDI may also indicate FD or HD (or SBFD) for each (non-SBFD) symbol / slot, or for quasi-static FD symbols / slots only. In this case, the symbol / slot indicated by the FDI is: · Always an SBFD symbol / slot. The UE 200 may ignore the FDI indication for the symbol / slot. · Always an SBFD symbol / slot. The UE 200 may not expect the FDI to indicate an SBFD symbol / slot as FD or HD. · Based on the FDI indication, the SBFD symbol / slot may be converted to an FD symbol / slot or an HD symbol / slot.

[0147] (3.2.2.6.4) Variations of Option 6 Option 6-2 and Option 6-3 may be combined.

[0148] In option 6, if UE200 is aware of FD symbols / slots, HD symbols / slots, and SBFD symbols / slots, UE200 transmission and reception in FD symbols / slots and / or HD symbols / slots and / or SBFD symbols / slots can be extended as follows:

[0149] Special processing of DL reception or UL transmission in FD symbols / slots and / or HD symbols / slots and / or SBFD symbols / slots. For example, separate parameters (e.g., parameters related to the spatial / power domain) are used for PUCCH / PUSCH / SRS in FD symbols / slots and / or HD symbols / slots and / or SBFD symbols / slots. For DL / UL channels / signals with multiple repetitions, different numbers of repetitions may or may not be supported for different types of symbols / slots (e.g., the number of repetitions of FD symbols / slots, the number of repetitions of HD symbols / slots, and the number of repetitions of SBFD symbols / slots may be different. Note that these repetition numbers may all be different from each other or may be partially different from each other. For example, the number of repetitions of FD symbols / slots and the number of repetitions of HD symbols / slots may be the same, but this number may be different from the number of repetitions of SBFD symbols / slots). With regard to periodic / semi-persistent DL / UL channels / signals, transmission / reception opportunities of DL / UL channels / signals with different durations in different types of symbols / slots may or may not be supported (for example, with regard to these transmission / reception opportunities, the duration of the FD symbol / slot, the duration of the HD symbol / slot, and the duration of the SBFD symbol / slot may be different. Note that these durations may all be different from one another, or some may be different from one another. For example, the duration of the FD symbol / slot and the duration of the HD symbol / slot may be the same, and this duration may be different from the duration of the SBFD symbol / slot.) With regard to periodic / semi-persistent DL / UL channels / signals, transmission / reception opportunities of DL / UL channels / signals mapped to different types of symbols / slots may or may not be supported.

[0150] (3.2.2.7) Variation of Operation Example 2 In the above-described Operation Example 2, the gNB100 may reserve resources (e.g., SBFD symbols / slots) to which SBFD is applied in order to reduce interference with important channels / signals.

[0151] (3.2.3) UE Capability Information For the above-described operation example, the following UE capability information (UE capability) may be defined. UE capability may be reported by UE 200. UE capability regarding awareness that gNB 100 operates in FD UE capability regarding awareness of time and / or frequency resources when gNB 100 operates in FD UE capability regarding awareness that gNB 100 operates in FD and the subband position of SBFD UE capability regarding awareness of time and / or frequency resources when gNB 100 operates in FD and the subband position of SBFD UE capability regarding whether to support configured DL reception or configured UL transmission in the symbol / slot indicated as F by the SFI UE capability regarding whether gNB 100 supports new cell-common / UE-specific RRC configuration to indicate FD UE capability regarding whether gNB 100 supports new cell-common / UE-specific dynamic signaling to indicate FD

[0152] (4) Actions and Effects According to the above-described embodiment, when informing a terminal that it operates on FD, flexible resource allocation can be realized using FD.

[0153] (5) Other Embodiments The contents of the present invention have been described above in accordance with the embodiments, but it will be obvious to those skilled in the art that the present invention is not limited to these descriptions and that various modifications and improvements are possible.

[0154] The above-described operation examples may be combined and applied in a composite manner, as long as no contradiction occurs.

[0155] The block diagrams used to explain the above embodiments show 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.

[0156] Functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0157] For example, the base station 100, the terminal 200, and the like according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 10 is a diagram illustrating an example of the hardware configuration of the base station 100 and the terminal 200 according to an embodiment of the present disclosure. The base station 100 and the terminal 200 described above may be physically configured as a computer device 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, and the like.

[0158] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of base station 100 and terminal 200 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.

[0159] Each function in the base station 100 and the terminal 200 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and the memory 1002, causing the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0160] 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 device, an arithmetic unit, a register, etc.

[0161] 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. While the above-described various processes have been described as being executed by one processor 1001, they 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.

[0162] The memory 1002 is a computer-readable recording medium and may be configured by, for example, at least one of 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 can store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to one embodiment of the present disclosure.

[0163] 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 storage medium may be, for example, a database, a server, or other suitable medium including at least one of memory 1002 and storage 1003.

[0164] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize, for example, at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD).

[0165] 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).

[0166] 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.

[0167] Furthermore, base station 100 and terminal 200 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, processor 1001 may be implemented using at least one of these pieces of hardware.

[0168] The notification of information is not limited to the aspects / embodiments described in the present disclosure and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0169] Each aspect / embodiment described in this disclosure may apply 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), New radio access (NX), Future generation radio access (FX), 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 any other suitable system, and next generation systems extended, modified, created, or defined based on these. In addition, multiple systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A with 5G).

[0170] 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.

[0171] In the present disclosure, a specific operation described as being performed by a base station may 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 (for example, an MME or an 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 (for example, an MME and an S-GW) may also be used.

[0172] 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 / output via multiple network nodes.

[0173] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be transmitted to another device.

[0174] 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).

[0175] 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).

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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.

[0180] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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)). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or a base station subsystem that provides communication services within this coverage.

[0185] 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.

[0186] In this disclosure, terms such as "terminal," "user terminal," "Mobile Station (MS)," and "User Equipment (UE)" may be used interchangeably.

[0187] 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.

[0188] At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be an autonomous mobile object operating based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0189] Furthermore, the base station in the present disclosure may be read as a terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a terminal is replaced with communication between multiple terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the terminal 200 may be configured to have the functions of the base station 100 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0190] Similarly, the term "terminal" in the present disclosure may be read as "base station." In this case, the base station 100 may be configured to have the functions of the terminal 200 described above.

[0191] 11 shows an example of the configuration of a vehicle 2001. As shown in Fig. 11, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013.

[0192] The drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.

[0193] 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.

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

[0195] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0196] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various types of information, such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information acquired from external devices via the communication module 2013, etc., to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001.

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

[0198] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., inertial measurement units (IMUs), inertial navigation systems (INSs), etc.), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.

[0199] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2029, which are provided in the vehicle 2001.

[0200] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0201] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021 to 2029 input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021 to 2029, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above-mentioned input.

[0202] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on the information service unit 2012 provided in the vehicle. The information service unit 2012 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 2013 (or data / information decoded from the PDSCH)).

[0203] Furthermore, the communication module 2013 stores various information received from external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axle 2009, sensors 2021 to 2029, and the like provided in the vehicle 2001.

[0204] 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 a table, database, or other data structure), and ascertaining, all of which are considered to be "judging" and "determining." "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and accessing (e.g., accessing data in memory), all of which are considered to be "judging" and "determining." "Determining" and "determining" may also include resolving, selecting, choosing, establishing, comparing, and other actions, all of which are considered to be "judging" and "determining." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Also, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0205] 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.

[0206] The reference signal may also be abbreviated as RS, and may be called a pilot depending on the applicable standard.

[0207] 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."

[0208] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0209] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0210] 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.

[0211] 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.

[0212] Numerology may be a communication parameter applied to the transmission and / or reception of a signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, etc.

[0213] A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) A slot may be a time unit based on numerology.

[0214] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0215] 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.

[0216] 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 to 13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be referred to as a slot, minislot, etc., instead of a subframe.

[0217] 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 terminal by allocating radio resources (such as frequency bandwidth and transmission power that can be used by each terminal) in TTI units. However, the definition of TTI is not limited to this.

[0218] 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.

[0219] 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. Furthermore, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0220] A TTI having a time length of 1 ms may be referred to as a regular TTI (TTI in LTE Rel. 8 to 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.

[0221] 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.

[0222] 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.

[0223] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0224] 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.

[0225] 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. A bandwidth part (BWP) (which may also be referred to as a partial bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a certain numerology in a certain carrier. Here, the common RBs may be identified by their indexes relative to the common reference point of the carrier. PRBs may be defined in a certain BWP and numbered within the BWP.

[0226] 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.

[0227] 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."

[0228] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples, and various configurations, such as 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, and the cyclic prefix (CP) length, can be changed.

[0229] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0230] 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.

[0231] 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."

[0232] 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.

[0233] (Additional Note) The above disclosure may be expressed as follows.

[0234] The first feature is a base station including: a transmitter that notifies that the base station operates in a full-duplex mode, in which transmission and reception are performed using overlapping resources in the time domain and the frequency domain; and a controller that instructs the transmission and reception directions of each terminal in the resources via terminal-specific parameters.

[0235] A second feature is that, in the first feature, the control unit is a base station that instructs the transmission and reception direction via a slot format indicator unique to a terminal, which is the parameter.

[0236] A third feature is the base station based on the first feature, wherein the control unit indicates positions of the resources in the time domain and the frequency domain via the parameters.

[0237] A fourth feature is the base station according to the third feature, wherein the control unit semi-statically indicates the location of the resource via the parameter included in configuration information of a radio resource control layer.

[0238] A fifth feature is the base station according to the third or fourth feature, wherein the location of the resource is dynamically indicated via the parameter included in downlink control information.

[0239] A sixth feature is a wireless communication method that notifies a terminal that it operates in a full duplex mode in which transmission and reception are performed using overlapping resources in the time domain and the frequency domain, and instructs a transmission and reception direction of each terminal in the resources via a terminal-specific parameter.

[0240] 10 Wireless communication system 20 NG-RAN 100 Base station 110 Wireless signal transmitting / receiving unit 120 Amplifier unit 130 Modulation / demodulation unit 140 Control signal / reference signal processing unit 150 Encoding / decoding unit 160 Data transmitting / receiving unit 170 Control unit 200 Terminal 210 Wireless signal transmitting / receiving unit 220 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 (IO port)

Claims

1. A base station comprising: a transmission unit that notifies of operating in a full-duplex mode of transmitting and receiving using overlapping resources in a time domain and a frequency domain; and a control unit that indicates a transmission / reception direction of each terminal in the resources via a terminal-specific parameter.

2. The base station according to claim 1, wherein the control unit indicates the transmission / reception direction via a slot format indicator specific to a terminal, which is the parameter.

3. The base station according to claim 1, wherein the control unit indicates a position of the resources in the time domain and the frequency domain via the parameter.

4. The base station according to claim 3, wherein the control unit indicates the position of the resources quasi-statically via the parameter included in setting information of a radio resource control layer.

5. The base station according to claim 3, wherein the control unit indicates the position of the resources dynamically via the parameter included in downlink control information.

6. A wireless communication method of notifying of operating in a full-duplex mode of transmitting and receiving using overlapping resources in a time domain and a frequency domain, and indicating a transmission / reception direction of each terminal in the resources via a terminal-specific parameter.