Terminal and radio base station

Abstract

The terminal transmits and receives wireless signals following a sub-band full-duplex communication mode. This sub-band full-duplex communication mode allocates uplink and downlink sub-bands in a non-overlapping frequency direction within a specified time period based on time-division duplex. The terminal receives a message containing higher-layer parameters indicating which of the uplink or downlink sub-bands has been allocated. Based on these parameters, the terminal controls uplink transmission in the uplink sub-band or downlink reception in the downlink sub-band.

Description

Technical Field

[0001] This disclosure relates to terminals and wireless base stations that support SBFD. Background Technology

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

[0003] For example, 3GPP Release 19 investigated an extension of duplex mode (Non-Patent Document 1). Specifically, regarding SBFD (Sub-Band non-overlapping Full Duplex), a duplex mode that allows simultaneous use of downlink (DL) and uplink (UL) within a carrier in a time division duplex (TDD) band, it was agreed to investigate the handling of the terminal (User Equipment, UE) in cases where UL transmission in the UL subband conflicts with DL reception in the DL subband.

[0004] Existing technical documents

[0005] Non-patent literature

[0006] Non-patent literature 1: "New WID: Evolution of NR duplex operation: Sub-band fullduplex (SBFD)", RP-234035, 3GPP TSG RAN Meeting #102, 3GPP, December 2023 Summary of the Invention

[0007] In the 3GPP Release 18 specification, the UE cannot identify in advance which of the UL subband and DL subband is assigned to the frequency direction region during the specified time (e.g., symbol or time slot) when SBFD is applied.

[0008] Therefore, in situations where the allocation of UL sub-bands and DL sub-bands changes dynamically or frequently within the specified time, it is not flexible enough to respond to such changes, and there is still room for improvement.

[0009] Therefore, the following disclosure is made in view of the situation and its purpose is to provide a terminal and wireless base station that can respond more flexibly even when the allocation of UL subband and DL subband in SBFD changes dynamically or frequently.

[0010] One embodiment of this disclosure is a terminal (UE 200) comprising: a communication unit (wireless signal transceiver 210) that transmits and receives wireless signals following a sub-band full-duplex communication mode, wherein the sub-band full-duplex communication mode allocates uplink sub-bands and downlink sub-bands in a non-overlapping frequency direction within a predetermined time period based on time division duplex; and a receiving unit (control signal transceiver 210). The reference signal processing unit (240) receives a message containing higher-layer parameters indicating which of the uplink subband and the downlink subband is allocated; and a control unit (control unit 270) controls uplink transmission in the uplink subband or downlink reception in the downlink subband based on the parameters.

[0011] One aspect of this disclosure is a terminal comprising: a communication unit that transmits and receives wireless signals following a sub-band full-duplex communication mode, wherein the sub-band full-duplex communication mode allocates uplink sub-bands or downlink sub-bands in a non-overlapping frequency direction within a predetermined time period based on time division duplex; a receiving unit that receives downlink control information indicating which of the uplink sub-bands or the downlink sub-bands has been allocated; and a control unit that, based on the downlink control information, controls uplink transmission in the uplink sub-band or downlink reception in the downlink sub-band.

[0012] One embodiment of this disclosure is a terminal comprising: a communication unit that transmits and receives wireless signals following a subband full-duplex communication mode, wherein the subband full-duplex communication mode allocates uplink subbands or downlink subbands in a non-overlapping frequency direction within a predetermined time period based on time division duplex; a receiving unit that receives a message containing higher-layer parameters indicating which of the uplink subband and the downlink subband is allocated, and downlink control information indicating which of the uplink subband and the downlink subband is allocated; and a control unit that, when not indicating allocation as the uplink subband or the downlink subband by the parameters, controls uplink transmission in the uplink subband or downlink reception in the downlink subband based on the downlink control information.

[0013] One aspect of this disclosure is a wireless base station (gNB 100) comprising: a communication unit that transmits and receives wireless signals following a subband full-duplex communication mode, wherein the subband full-duplex communication mode allocates uplink subbands or downlink subbands in a non-overlapping frequency direction within a predetermined time period based on time division duplex; and a transmission unit that transmits a message containing a higher-layer parameter indicating which of the uplink subbands and the downlink subbands has been allocated.

[0014] One aspect of this disclosure is a wireless base station comprising: a communication unit that transmits and receives wireless signals following a subband full-duplex communication mode, wherein the subband full-duplex communication mode allocates uplink subbands or downlink subbands in a non-overlapping frequency direction within a predetermined time period based on time division duplex; and a transmission unit that transmits downlink control information indicating which of the uplink subbands and the downlink subbands has been allocated. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the wireless communication system 10.

[0016] Figure 2 This is a diagram illustrating an example of the structure of wireless frames, subframes, and time slots used in the wireless communication system 10.

[0017] Figure 3 This is a diagram showing structural examples of TDD and XDD / SBFD.

[0018] Figure 4 This is the function block structure diagram of gNB 100 and UE 200.

[0019] Figure 5 This is a diagram showing the timing example of the SBFD settings involved in Action Example 1 (Option 1-1).

[0020] Figure 6 This is a diagram showing the timing example of the SBFD settings involved in Action Example 1 (Options 1-2).

[0021] Figure 7 This is a diagram showing the timing example of the SBFD setting involved in Action Example 2 (Option 2-1).

[0022] Figure 8 This is a diagram showing the timing example of the SBFD setting involved in Action Example 2 (Option 2-2).

[0023] Figure 9 This is a diagram illustrating an example of the hardware structure of gNB 100 and UE 200.

[0024] Figure 10 This is a diagram showing a structural example of vehicle 2001. Detailed Implementation

[0025] (1) Overall general structure of wireless communication system

[0026] Figure 1 This is a schematic diagram of the overall structure of the wireless communication system 10 according to this embodiment. The wireless communication system 10 is a 5G New Radio (NR) compliant wireless communication system, including a Next Generation Radio Access Network (NG-RAN 20) and a terminal 200 (hereinafter, UE 200, User Equipment, UE). Alternatively, the wireless communication system 10 may also be a wireless communication system following protocols such as Beyond 5G, 5G Evolution, or 6G.

[0027] NG-RAN 20 includes a radio base station 100 (hereinafter referred to as gNB 100). Furthermore, the specific structure of the wireless communication system 10, including the number of gNBs and UEs, is not limited to... Figure 1 The example shown.

[0028] NG-RAN 20 actually contains multiple NG-RAN nodes, specifically multiple gNBs (or ng-eNBs), connected to a 5G-compliant core network (5GC, not shown). Furthermore, NG-RAN 20 and 5GC can also be simply referred to as a "network".

[0029] The gNB 100 is a 5G-compliant wireless base station that performs 5G-compliant wireless communication with the UE 200. The gNB 100 and UE 200 can support Massive MIMO (Multiple-Input Multiple-Output) by controlling the wireless signals transmitted from multiple antenna elements to generate more directional antenna beams (hereinafter, beams BM), carrier aggregation (CA) that uses multiple component carriers (CC), and dual connectivity (DC) that allows simultaneous communication between the UE and two NG-RAN nodes.

[0030] Furthermore, DCs can be of various types, including Multi-RATDual Connectivity (MR-DC) which utilizes multiple radio access technologies, and NR-NR Dual Connectivity (NR-DC) which utilizes only NR. Additionally, MR-DC can be E-UTRA-NR Dual Connectivity (EN-DC) where eNBs form the master node (MN) and gNBs form the slave node (SN), or conversely, NR-E-UTRA Dual Connectivity (NE-DC).

[0031] The gNB 100 can transmit multiple beams (BMs) with different transmission directions (also referred to as direction, radiation direction, or coverage area, etc.) in both space and time division. Furthermore, the gNB 100 can also transmit multiple beams (BMs) simultaneously.

[0032] In addition, the wireless communication system 10 can support multiple frequency ranges (FRs). Specifically, it can support the following frequency ranges.

[0033] FR1: 410 MHz~7.125 GHz

[0034] ·FR2-1: 24.25 GHz~52.6 GHz

[0035] In FR1, a sub-carrier spacing (SCS) of 15, 30, or 60 kHz can be used, with a bandwidth (BW) of 5–100 MHz. FR2-1 is a higher frequency than FR1, and can use a sub-carrier spacing (SCS) of 60 or 120 kHz (or including 240 kHz), with a bandwidth (BW) of 50–400 MHz.

[0036] Furthermore, SCS can be interpreted as a numerology. The numerology is defined in 3GPP TS 38.300 and corresponds to a subcarrier spacing in the frequency domain.

[0037] Furthermore, the wireless communication system 10 also supports frequency bands higher than FR2-1. Specifically, the wireless communication system 10 supports frequency bands exceeding 52.6 GHz and up to 71 GHz. Such high-frequency bands can also be referred to as FR2-2.

[0038] When using frequency bands exceeding 52.6 GHz, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform-Spread (DFT-S-OFDM) with larger sub-carrier spacing (SCS) can be applied.

[0039] Furthermore, in high-frequency bands like FR2-2, as mentioned above, the increase in inter-carrier phase noise becomes a problem. Therefore, a larger (wider) SCS or single-carrier waveform is required.

[0040] The larger the SCS, the shorter the symbol / CP (Cyclic Prefix) period and the slot period (while maintaining a 14 symbol / slot structure). Figure 2 An example of the structure of wireless frames, subframes, and time slots used in wireless communication system 10 is shown.

[0041] While maintaining a 14-symbol / slot structure, a larger (wider) SCS results in a shorter symbol period (and slot period). The time direction can also be referred to as the time domain, time region, symbol period, symbol length, or symbol time, etc. Conversely, the frequency direction can be referred to as the frequency domain, resource block, subcarrier, or BWP (Bandwidth part), etc.

[0042] Frequency resources may include component carriers, subcarriers, resource blocks (RBs), resource block groups (RBGs), and BWPs (bandwidth parts). Time resources may include symbols, time slots, mini-time slots, subframes, radio frames, and DRX (Discontinuous Reception) periods.

[0043] Furthermore, the number of symbols constituting one time slot does not necessarily have to be 14 symbols (e.g., 28 symbols, 56 symbols). In addition, the number of time slots in each subframe can vary depending on the SCS.

[0044] In the wireless communication system 10, an SSB (SS / PBCH Block) consisting of a synchronization signal (SS) and a downlink physical broadcast channel (PBCH) can be used.

[0045] The SSB is primarily transmitted periodically from the network for UE 200 to perform cell ID and receive timing checks at the start of communication. In NR, the SSB is also used for receiving quality measurements in each cell. The transmission period of the SSB can be specified as 5, 10, 20, 40, 80, 160 milliseconds, etc. Furthermore, the initial access period for UE 200 can be assumed to be 20 milliseconds.

[0046] Furthermore, various duplex modes can be used in the wireless communication system 10. Specifically, time division duplex (TDD) and frequency division duplex (FDD) can be used. A duplex mode can be explained as a way to achieve simultaneous transmission and reception (duplex communication) of downlink (DL) and uplink (UL).

[0047] Furthermore, in the wireless communication system 10, other duplexing methods that can use both DL and UL simultaneously can be used. Specifically, XDD (Cross Division Duplex) / SBFD (Sub-Band non-overlapping Full Duplex) can be used.

[0048] Figure 3 Examples of TDD and XDD / SBFD structures are shown. Figure 3 As shown, in TDD as specified in 3GPP Releases 15-17, each symbol can be set to DL, UL or F (flexible: can be set to DL or UL) and indicated to UE 200.

[0049] On the other hand, in XDD / SBFD being studied in 3GPP Release 18, gNB 100 can set DL on a specific frequency resource (e.g., subband) and UL on other frequency resources within a specified time T of symbols, and indicate this to UE 200.

[0050] In XDD / SBFD, both DL and UL can be used simultaneously within a carrier (CC) in the TDD band domain. Using the central portion of the frequency resources within the DL and UL carriers can avoid or mitigate potential cross-link interference (CLI) with adjacent carriers. XDD / SBFD can also be referred to as a type of full-duplex or FDD full-duplex, or, as SBFD, as full-duplex communication in sub-bands (DL / UL).

[0051] In SBFD, frequency resources for DL ​​(DL band domain) and frequency resources for UL (UL band domain) are allocated non-overlapping within the duplex band domain at the same time.

[0052] Specifically, XDD / SBFD is a method of allocating the DL and UL bands in a non-overlapping frequency direction within a specified time T based on time-division duplex. The DL band can be interpreted as a DL sub-band, and the UL band can be interpreted as a UL sub-band. Hereinafter, XDD / SBFD will be appropriately abbreviated as SBFD.

[0053] (2) Functional block structure of wireless communication system

[0054] Next, the functional block structure of the wireless communication system 10 will be described. Specifically, the functional block structure of the UE 200 will be described. Figure 4 This is the function block structure diagram of gNB 100 and UE 200.

[0055] like Figure 4 As shown, the UE 200 includes a wireless signal transceiver unit 210, an amplifier unit 220, a modem unit 230, and a control signal transceiver unit 200. The reference signal processing unit 240, the encoding / decoding unit 250, the data transceiver unit 260, and the control unit 270 are included.

[0056] In addition, it is important to note that in Figure 4 Only the main functional blocks associated with the implementation description are shown in the diagram; the UE 200 (gNB 100) has other functional blocks (e.g., power supply section, etc.). Additionally, Figure 4 This shows the functional block structure of UE 200. For information on the hardware structure, please refer to [link / reference]. Figure 9 .

[0057] The wireless transceiver unit 210 transmits and receives wireless signals that comply with NR. The wireless transceiver unit 210 can support Massive MIMO, which generates more directional beams by controlling wireless (RF) signals transmitted from multiple antenna elements, carrier aggregation (CA) that uses multiple component carriers (CC), and dual connectivity (DC) that enables simultaneous communication between the UE and two NG-RAN nodes.

[0058] Furthermore, the wireless transceiver unit 210 can transmit and receive wireless signals following Subband Full-Duplex (SBFD) communication mode. SBFD is a method of allocating uplink subbands (UL subbands) and downlink subbands (DL subbands) in a non-overlapping frequency direction within a predetermined time period based on time-division duplex. In this embodiment, the wireless transceiver unit 210 constitutes a communication unit. Of course, the wireless transceiver unit 210 can also support duplex modes such as TDD and FDD (Frequency Division Duplex).

[0059] The amplification unit 220 is composed of a power amplifier (PA) and a low-noise amplifier (LNA). The amplification unit 220 amplifies the signal output from the modem 230 to a predetermined power level. Additionally, the amplification unit 220 amplifies the RF signal output from the wireless transceiver unit 210.

[0060] The modem 230 performs data modulation / demodulation, transmit power setting, and resource block allocation for each predetermined communication destination (gNB 100, etc.). Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) or Discrete Fourier Transform-Spread OFDM (DFT-S-OFDM) can also be applied in the modem 230. Furthermore, DFT-S-OFDM can be used not only for the uplink (UL) but also for the downlink (DL).

[0061] The control signal and reference signal processing unit 240 performs processing related to various control signals transmitted and received by the UE 200, as well as processing related to various reference signals transmitted and received by the UE 200.

[0062] Specifically, the control signal / reference signal processing unit 240 receives various control signals transmitted from the gNB 100 via a predetermined control channel, such as control signals from the Radio Resource Control (RRC) layer. Additionally, the control signal / reference signal processing unit 240 transmits various control signals to the gNB 100 via the predetermined control channel.

[0063] The control signal and reference signal processing unit 240 performs processing using reference signals (RS) such as demodulation reference signal (DMRS) and phase tracking reference signal (PTRS).

[0064] DMRS is a terminal-specific reference signal (pilot signal) used to estimate the fading channel used in data demodulation, and is known between the base station and the terminal. PTRS is a terminal-specific reference signal used to estimate phase noise, which is a problem in the high-frequency band.

[0065] In addition to DMRS and PTRS, the reference signal may also include Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Positioning Reference Signal (PRS) for location information.

[0066] In addition, channels include control channels and data channels. Control channels may include PDCCH, PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel), downlink control information (DCI) containing the Random Access Radio Network Temporary Identifier (RA-RNTI), and physical broadcast channel (PBCH), etc.

[0067] In addition, data channels include PDSCH and PUSCH (Physical Uplink Shared Channel). Data can refer to data transmitted via data channels.

[0068] control signals The reference signal processing unit 240 can send UE 200's capability information to the network. Additionally, control signals... The reference signal processing unit 240 can receive a message containing higher-layer parameters indicating which of the UL and DL subbands is assigned. In this embodiment, the control signal... The reference signal processing unit 240 can be configured as a receiving unit that receives messages containing higher-level parameters.

[0069] Specifically, control signals The reference signal processing unit 240 can receive an RRC message containing tdd-UL-DL-ConfigurationDedicated. tdd-UL-DL-ConfigurationDedicated is a parameter of the RRC layer and can be interpreted as an Information Element (IE) or a field constituting that IE. For example, tdd-UL-DL-ConfigurationDedicated can be included in the ServingCellConfig setting (refer to 3GPP TS38.331) that specifies the serving cell configuration.

[0070] Furthermore, as mentioned above, this parameter can be communicated via higher-level signaling (e.g., RRC), but it can also be communicated via lower-level signaling (e.g., MAC-CE). Therefore, signaling from the network can include either higher-level or lower-level signaling.

[0071] control signals The reference signal processing unit 240 includes downlink control information (DCI) indicating which of the UL and DL subbands has been allocated. DCI can also be interpreted as control information transmitted via the downlink (DL) containing scheduling information, data modulation, and channel coding rate information required for demodulating data for each user (UE). In this embodiment, the control signal... The reference signal processing unit 240 can be configured as a receiving unit for receiving downlink control information.

[0072] The DCI can also, for example, utilize the dynamic SFI (Slot Format Indication) based on DCI format 2_0 (display).

[0073] Alternatively, the DCI can also follow a new DCI format. Furthermore, other signaling methods (e.g., MAC-CE) can be used instead of DCI.

[0074] In addition, control signals The reference signal processing unit 240 can also receive messages containing higher-layer parameters indicating which of the UL subband and DL subband is allocated, as well as downlink control information indicating which of the UL subband and DL subband is allocated.

[0075] Specifically, control signals The reference signal processing unit 240 can receive an RRC message containing the aforementioned tdd-UL-DL-ConfigurationDedicated, as well as signaling indicating which DCI (or other layer) is assigned to the UL subband and DL subband. Furthermore, the reception of this parameter and the reception of the DCI are preferably received within a predetermined time, but they do not necessarily have to be simultaneous. That is, a certain time difference can also be set between the reception of the parameter and the reception of the DCI.

[0076] The encoding / decoding unit 250 performs data segmentation / linking and channel encoding / decoding for each predetermined communication destination (gNB 100 or other gNB).

[0077] Specifically, the encoding / decoding unit 250 divides the data output from the data transceiver unit 260 into predetermined sizes and performs channel coding on the divided data. Additionally, the encoding / decoding unit 250 decodes the data output from the modem unit 230 and concatenates the decoded data.

[0078] The data transceiver unit 260 performs the transmission and reception of Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, the data transceiver unit 260 performs the assembly / disassembly of PDUs / SDUs at multiple layers (Media Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP), etc.). In addition, the data transceiver unit 260 performs error correction and retransmission control based on Hybrid Automatic Repeat Request (HARQ).

[0079] The control unit 270 controls the functional blocks that constitute the UE 200. In particular, in this embodiment, the control unit 270 is capable of performing control related to SBFD.

[0080] Specifically, the control unit 270 can control uplink transmission in the UL subband or downlink reception in the DL subband based on higher-layer parameters indicating which of the UL subband and DL subband is allocated.

[0081] More specifically, when the parameter indicates that a UL sub-band has been allocated, the control unit 270 can perform UL transmission in that UL sub-band. Additionally, when the parameter indicates that a DL sub-band has been allocated, the control unit 270 can perform DL reception in that DL sub-band.

[0082] Furthermore, the control unit 270 can also control uplink transmission in the UL subband or downlink reception in the DL subband based on the DCI indicating which subband or DL ​​subband has been allocated. Specifically, when the DCI indicates that the UL subband has been allocated, the control unit 270 can perform UL transmission in that UL subband. Similarly, when the DCI indicates that the DL subband has been allocated, the control unit 270 can perform DL reception in that DL subband.

[0083] If the parameter from the higher layer does not indicate whether the subband is assigned to UL or DL, the control unit 270 can control uplink transmission in the UL subband or downlink reception in the DL subband based on DCI.

[0084] Here, the allocation indication of UL sub-band or DL ​​sub-band based on this parameter can be interpreted as a semi-static sub-band setting, while the allocation indication of UL sub-band or DL ​​sub-band based on this DCI can be interpreted as a dynamic sub-band setting. The dynamic sub-band setting can override the semi-static sub-band setting.

[0085] Furthermore, the gNB 100 can possess functions corresponding to those of the UE 200 described above. Specifically, the radio transceiver unit 210 of the gNB 100 can be configured as a communication unit that transmits and receives radio signals in a subband full-duplex communication mode that allocates UL subbands or DL ​​subbands in a non-overlapping frequency direction within a specified time based on time division duplex. The control signals of the gNB 100... The reference signal processing unit 240 can be configured to transmit a message containing higher-layer parameters indicating which of the UL subband and DL subband is assigned.

[0086] In addition, the control signals of gNB 100 The reference signal processing unit 240 can also be configured as a transmitter that transmits downlink control information indicating which of the UL subband and DL subband is allocated.

[0087] (3) Operation of wireless communication system

[0088] Next, the operation of the wireless communication system 10 will be explained. Specifically, the operation related to the allocation of the UL subband and DL subband of the SBFD will be explained.

[0089] (3.1) Action Summary

[0090] In the wireless communication system 10, a mechanism can be provided to explicitly notify the UE which of the UL subband and DL subband is allocated to the frequency direction region during a specified time (e.g., symbol or time slot) of the application of SBFD.

[0091] Specifically, the following actions can be performed.

[0092] • (Action Example 1): Support for UE functions corresponding to the semi-static setting of the link direction of SBFD symbols.

[0093] • (Option 1-1): The parameter (tdd-UL-DL-ConfigurationDedicated) is used to indicate the link direction of SBFD symbols and is reused or reinterpreted.

[0094] • (Options 1-2): To indicate the link direction of SBFD symbols, import new RRC parameter settings.

[0095] • (Action Example 2): Dynamic display of SBFD symbol link direction, processing timeline, and support for corresponding UE functions.

[0096] • (Option 2-1): The dynamic SFI of DCI format 2_0 is reused or reinterpreted to indicate the link direction of SBFD symbols.

[0097] • (Option 2-2): To indicate the link direction of SBFD symbols, a new dynamic display is introduced.

[0098] • (Action Example 3): The semi-static setting and dynamic display of the link direction of SBFD symbols are supported, enabled, or set.

[0099] In this case, without using SBFD symbols that represent the semi-static link direction as "D" (downlink) or "U" (uplink), dynamic link direction display based on DCI or the like can override the semi-static link direction display.

[0100] Alternatively, in the absence of SBFD symbols representing the semi-static link direction as "D" (downlink) or "U" (uplink), dynamic link direction display based on DCI or the like may have cases where it can cover the semi-static link direction display and cases where it cannot.

[0101] (3.2) Example 1 of the action

[0102] (3.2.1) Option 1-1

[0103] Figure 5 This shows an example of the timing of the SBFD settings involved in Action Example 1 (Option 1-1). For example... Figure 5As shown, the UE can receive the tdd-UL-DL-ConfigurationDedicated contained in the ServingCellConfig, and set the UL and DL for SBFD application based on the content of the received tdd-UL-DL-ConfigurationDedicated. The UE can then perform transmission and reception via the set UL / DL.

[0104] The UE can support UE functions corresponding to the semi-static setting of the link direction of SBFD symbols. Specifically, the tdd-UL-DL-ConfigurationDedicated parameter, which is an existing parameter, can be reused or reinterpreted to represent the link direction (UL or DL) of SBFD symbols.

[0105] In existing 3GPP specifications, tdd-UL-DL-ConfigurationDedicated can only cover the flexible symbols set by tdd-UL-DL-ConfigurationCommon. Flexible time-resource (F) is a radio resource (time resource and / or frequency resource) that can be used in either DL or UL.

[0106] When the SBFD symbol is set to DL by tdd-UL-DL-ConfigurationCommon, tdd-UL-DL-ConfigurationDedicated can represent only DL. When the SBFD symbol is set to Flexible by tdd-UL-DL-ConfigurationCommon, the UE can act as follows.

[0107] • When the UE represents the symbol as DL in tdd-UL-DL-ConfigurationDedicated, it can receive the DL channel / signal in the DL subband of the SBFD symbol (or the Physical Resource Block (PRB) that can be used as DL).

[0108] • When the UE represents the symbol as UL in tdd-UL-DL-ConfigurationDedicated, it can transmit the UL channel / signal within the UL subband of the SBFD symbol (or the PRB that can be used as UL).

[0109] • When the UE represents the symbol as Flexible in tdd-UL-DL-ConfigurationDedicated, it can receive DL channels / signals in the DL subband (or PRB that can be used as DL), or transmit UL channels / signals in the UL subband (or PRB that can be used as UL) of the SBFD symbol.

[0110] Furthermore, whether the UE transmits or receives may depend on dynamic indications from the network (e.g., action example 2), or on the set / scheduled transmission / reception and conflict handling. Additionally, as a variation, in a flexible setting, it may only be possible to perform the set transmission and reception (based on conflict handling) or the scheduled transmission and reception with a specific scheduling offset (indicating that a scheduled DCI was received long before this symbol).

[0111] When the SBFD symbol is set to DL by tdd-UL-DL-ConfigurationCommon, the UE can act as follows.

[0112] • (Alt-a): (The indication based on tdd-UL-DL-ConfigurationDedicated does not indicate the link direction of the SBFD symbol) The UE can receive DL channels / signals in the DL subband (or PRB that can be used as DL) or transmit UL channels / signals in the UL subband (or PRB that can be used as UL) in the SBFD symbol.

[0113] Furthermore, whether the UE is transmitting or receiving may depend on dynamic instructions from the network (e.g., action example 2), or on the set / scheduled transmission / reception and conflict handling (which may also include the variations mentioned above).

[0114] • (Alt-b): Mitigates previous limitations of tdd-UL-DL-ConfigurationDedicated for DL ​​symbols set by tdd-UL-DL-ConfigurationCommon (for SBFD symbols).

[0115] For example, tdd-UL-DL-ConfigurationDedicated can represent DL symbols set by tdd-UL-DL-ConfigurationCommon as DL or UL (or flexible) (in the case where DL symbols are set as SBFD symbols). When the restrictions are eased in this way, the same UE actions as described above can be reused for flexible symbols of SBFD.

[0116] Whether to reinterpret tdd-UL-DL-ConfigurationDedicated as a link direction indicator for SBFD symbols can be defined by 3GPP specifications, such as default reinterpretation. Alternatively, reinterpretation can be enabled via gNB (e.g., an RRC parameter that enables / disables reinterpretation).

[0117] Whether to reinterpret tdd-UL-DL-ConfigurationDedicated can be determined based on whether the explicit setting of the link direction indicator is enabled (e.g., options 1-2) and / or whether the dynamic indication of the link direction indicator is enabled (e.g., action example 2).

[0118] For example, if the explicit setting of the link direction indication is enabled, the UE may not need to reinterpret tdd-UL-DL-ConfigurationDedicated for the link direction indication used in SBFD symbols. Otherwise, the UE may reinterpret tdd-UL-DL-ConfigurationDedicated for the link direction indication used in SBFD symbols.

[0119] Additionally, if the dynamic indication of the link direction indicator is valid / set, the UE does not need to reinterpret tdd-UL-DL-ConfigurationDedicated for the link direction indicator of the SBFD symbols. Otherwise, the UE can reinterpret tdd-UL-DL-ConfigurationDedicated for the link direction indicator of the SBFD symbols.

[0120] The UE capability to reinterpret the tdd-UL-DL-ConfigurationDedicated parameter for the link direction indication of SBFD symbols can be defined as follows.

[0121] Regarding whether the UE supports the reinterpretation of the link direction indication tdd-UL-DL-ConfigurationDedicated for SBFD symbols, new UE capabilities and reporting signaling (as well as RRC settings) can be defined.

[0122] If the UE does not report this capability, the link direction of the SBFD symbol may depend on the set / scheduled transmit / receive and collision handling. Alternatively, this capability may also be defined as a basic capability for SBFD operation (i.e., support for dynamic indication of link direction and / or support for SBFD actions that do not require explicit indication of link direction in the SBFD symbol can be considered a higher capability).

[0123] (3.2.2) Options 1-2

[0124] Figure 6 This shows an example of the timing of the SBFD settings involved in Action Example 1 (Options 1-2). For example... Figure 6 As shown, the UE can receive new RRC parameters representing the link direction of SBFD symbols, and set the UL and DL for applying SBFD based on the content of the received parameters. The UE can then perform transmission and reception via the set UL / DL.

[0125] In this option, a new RRC parameter can be imported to indicate the link direction of SBFD symbols. As described in Option 1-1, in the existing 3GPP specification, tdd-UL-DL-ConfigurationDedicated can only cover the flexible symbols set by tdd-UL-DL-ConfigurationCommon. To indicate the link direction of SBFD DL symbols, it is sometimes necessary to mitigate the current limitations (e.g., Alt-b in Option 1-1).

[0126] In the existing 3GPP specifications, tdd-UL-DL-ConfigurationDedicated can represent a time slot as "allDownlink", "allUplink", or "the first DL symbol and the last UL symbol, with the remaining intermediate symbols (if present)". This means that the use of DL and UL in SBFD time slots does not have the full flexibility of adaptive dynamic DL and UL services.

[0127] The Reference SCS (Reference SCS) related to the setting of the link direction of SBFD symbols can be set to any of the following.

[0128] • (Opt 1): The SCS specified by the same ReferenceSCS or referenceSubcarrierSpacing of tdd-UL-DL-ConfigurationCommon, which is located in the same time domain as the SBFD subband.

[0129] • (Opt 2): The same SCS as the Reference SCS used for SFI display in the serving cell.

[0130] • (Opt 3): The Reference SCS is explicitly set for link direction setting.

[0131] • (Opt 4): Predefined by 3GPP specifications (e.g., fixed as any of the 15 / 30 / 60 / 120 / 480 / 960kHz SCS)

[0132] The periodicity of the link direction indication of the SBFD symbol can be set to any of the following.

[0133] • (Alt-1): Equal to the periodicity of the SBFD sub-band time position indication

[0134] • (Alt-2): Set to an integer multiple of the periodicity of the SBFD sub-band time position indicator.

[0135] The integer value can be set by the gNB or predefined by the 3GPP specification (which can be a default value). Candidate integer values ​​can be natural numbers such as 1 / 2 / 4 / 5 / 8 / 10 / 12 / 15 / 16 / 18 / 20, which can be predefined by the 3GPP specification. Alternatively, as a variation, the UE can also be designed to use the value obtained by dividing the link direction indication period by 20 milliseconds.

[0136] • (Alt-3): Can be set to a fixed value predefined by setting or specification, such as 5 / 10 / 20 / 40 / 80 / 100 milliseconds.

[0137] The details / content of the link direction indication can be set to any of the following.

[0138] • (Opt-a): For the SBFD symbol representation bitmap during the link direction indication period, allocate 1 bit for each SBFD symbol during that period.

[0139] Candidate values ​​for each bit can be set to {D, U} or {D, U, F}. As a variation, this can be applied only to SBFD symbol representation bitmaps set to DL by tdd-UL-DL-ConfigurationCommon. For SBFD symbols set to Flexible by tdd-UL-DL-ConfigurationCommon, Option 1 (i.e., the existing tdd-UL-DL-ConfigurationDedicated) can be applied.

[0140] • (Opt-a'): A bitmap representing all symbols during the link direction indication period, with 1 bit allocated to each symbol during the period.

[0141] The candidate values ​​for each bit indication can be set to {D, U}, ({D, U, F}, or {D, U, F, non-SBFD}). As a variation, in the case of non-SBFD symbols, the UE can expect "non-SBFD" to be represented, or it can ignore the corresponding bit indication. In addition, some restrictions can be defined in advance. For example, the switching between D and U can also be set to a number restricted within the set of consecutive SBFD symbols (e.g., "1").

[0142] • (Opt-b): Defines the set of {slot index, SBFD-direction-pattern}.

[0143] The SBFD direction mode can be set to a bitmap that maps each bit to a (SBFD) symbol in the time slot (e.g., the content of the bitmap can be the same as Opt-a / a'), the value of "all-downlink" (representing the DL direction of all SBFD symbols in the time slot) or "all-uplink" (representing the UL direction of all SBFD symbols in the time slot), or the value of "number of SBFD symbols in the DL direction, number of SBFD symbols in the UL direction".

[0144] • (Opt-c): Defines the set of {slot index, SBFD direction mode index}.

[0145] The list of SBFD direction modes can be set or defined by the 3GPP specifications. For example, it can be a list / table of rows / elements representing SBFD direction modes for time slots. An SBFD direction mode index can correspond to one SBFD direction mode. The content of the SBFD direction modes can be the same as Opt-b described above.

[0146] • (Opt-d): Set the starting symbol of UL for each set of consecutive SBFD symbols (i.e., DL reception can be envisioned before the symbol).

[0147] The UE's action based on the link direction indication can be set to any of the following.

[0148] • When the link direction indication represents DL in SBFD symbols, the UE can receive the DL channel / signal in the DL subband of SBFD symbols (or the PRB that can be used as DL).

[0149] • When the link direction indication represents UL for SBFD symbols, the UE can transmit the UL channel / signal within the UL subband of the SBFD symbols (or the PRB that can be used as UL).

[0150] As a variation, when the link direction indication is flexible in its representation of SBFD symbols, the UE can receive DL channels / signals in the DL subband of SBFD symbols (or PRBs that can be used as DL), or transmit UL channels / signals in the UL subband (or PRBs that can be used as UL).

[0151] Furthermore, whether the UE transmits or receives may depend on dynamic indications from the network (e.g., action example 2), or on the set / scheduled transmission / reception and conflict handling. Additionally, as a variation, in a flexible setting, it may only be possible to perform the set transmission and reception (based on conflict handling) or the scheduled transmission and reception with a specific scheduling offset (indicating that a scheduled DCI was received long before this symbol).

[0152] The UE capability to determine the link direction of SBFD symbols based on semi-static link direction settings can be defined as follows.

[0153] • Regarding the semi-static setting of whether the UE supports the link direction indication of SBFD symbols, new UE capabilities and reporting signaling (and RRC settings) can be defined for each UE / FR / FC (Frequency Channel).

[0154] If the UE does not report this capability, the link direction of the SBFD symbol may depend on the configured / scheduled transmit / receive and collision handling, or if the UE reports the corresponding capability, it may depend on dynamic indication (e.g., Action Example 2). Alternatively, this capability may also be defined as a basic capability for SBFD operation (i.e., support for dynamic indication of link direction and / or support for SBFD actions that do not require explicit indication of link direction in the SBFD symbol can be considered a higher capability).

[0155] As a change, in the case of non-SBFD symbols, the UE can envision that the new RRC parameter can represent the D / U / F of the non-SBFD symbols. For example, in the case of non-SBFD symbols represented as Flexible by tdd-UL-DL-ConfigurationCommon, if the new RRC parameter represents D / U, then the non-SBFD symbols can be overridden as non-SBFD DL / UL symbols. Furthermore, if the new RRC parameter is set simultaneously, the UE may not expect tdd-UL-DL-ConfigurationDedicated to be set. The UE may not apply the setting of tdd-UL-DL-ConfigurationDedicated when the new RRC parameter is set simultaneously.

[0156] (3.3) Example 2 of the action

[0157] (3.3.1) Option 2-1

[0158] Figure 7 This shows a timing example of the SBFD setting involved in Action Example 2 (Option 2-1). For example... Figure 7 As shown, the UE can receive the dynamic SFI contained in the DCI (DCI format 2_0) and set the UL and DL for applying SBFD based on the content of the received dynamic SFI. The UE can perform transmission and reception via the set UL / DL.

[0159] In this example, dynamic display of the link direction in SBFD symbols can be supported. Additionally, in this option, the dynamic SFI of DCI format 2_0 can be reused or reinterpreted to represent the link direction of SBFD symbols.

[0160] In existing 3GPP specifications, a dynamic SFI can cover only the flexible symbols defined by tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated. When an SBFD symbol is set to DL by tdd-UL-DL-ConfigurationCommon, the SFI can represent only that DL. When an SBFD symbol is set to Flexible by tdd-UL-DL-ConfigurationCommon, the UE can operate as follows.

[0161] • When the symbol is represented as DL by the dynamic SFI of DCI format 2_0, the UE can receive the DL channel / signal within the DL subband of the SBFD symbol (or the PRB that can be used as DL).

[0162] • When the symbol is represented as UL by the dynamic SFI of DCI format 2_0, the UE can transmit the UL channel / signal within the UL subband of the SBFD symbol (or the PRB that can be used as UL).

[0163] • When the symbol is represented as flexible by the dynamic SFI of DCI format 2_0, the UE can receive DL channels / signals in the DL subband (or PRBs that can be used as DL), or transmit UL channels / signals in the UL subband (or PRBs that can be used as UL) of the SBFD symbol.

[0164] Furthermore, whether the UE is transmitting or receiving can depend on the configured / scheduled transmission / reception and conflict handling.

[0165] When the SBFD symbol is set to DL by tdd-UL-DL-ConfigurationCommon, the UE can act as follows.

[0166] • (Alt-a): (The indication of dynamic SFI based on DCI format 2_0 does not indicate the direction of SBFD symbols) The UE can receive DL channels / signals in the DL subband (or PRB that can be used as DL) of SBFD symbols, or transmit UL channels / signals in the UL subband (or PRB that can be used as UL).

[0167] Furthermore, whether the UE transmits or receives can depend on the configured / scheduled transmission / reception and conflict handling. Alternatively, it may only be able to perform the configured transmission / reception (based on conflict handling) or the scheduled transmission / reception with a specific scheduling offset (indicating that the scheduled DCI was received long before this symbol).

[0168] • (Alt-b): Mitigates previous limitations related to dynamic SFI of DCIformat 2_0 for DL ​​symbols set by tdd-UL-DL-ConfigurationCommon.

[0169] For example, the dynamic SFI of DCI format 2_0 can represent the DL symbol set by tdd-UL-DL-ConfigurationCommon as DL or UL (or flexible) (in the case of SBFD symbol). When the restrictions are eased in this way, the same UE actions as described above can be reused for the flexible symbol of SBFD.

[0170] Whether to reinterpret the dynamic SFI of DCI format 2_0 as a link direction indicator for SBFD symbols can be defined by default through 3GPP specifications. Alternatively, reinterpretation can be enabled via gNB (e.g., RRC parameters that enable / disable reinterpretation).

[0171] Whether to reinterpret the dynamic SFI of DCI format 2_0 can be determined based on whether the explicit setting of the link direction indicator is enabled (e.g., option 2-2) and / or whether the dynamic indicator of the link direction indicator is enabled (e.g., action example 2).

[0172] For example, if the explicit setting of the link direction indication is enabled, the UE may not need to reinterpret the dynamic SFI of DCI format 2_0 for the link direction indication of SBFD symbols. Otherwise, the UE may reinterpret the dynamic SFI of DCI format 2_0 for the link direction indication of SBFD symbols.

[0173] Additionally, some constraints can be defined in advance as a variation. For example, the dynamic SFI indicating the link direction of the SBFD symbol needs to be received well before the SBFD symbol. For example, it can be set to M symbols, N time slots, or L milliseconds. The required offset (M / N / L) can be reported as a UE capability.

[0174] Regarding whether the UE supports the reinterpretation of DCI format 2_0 dynamic SFI for the link direction indication of SBFD symbols, new UE capabilities and reporting signaling (and RRC settings) can be defined for each UE / FR / FC (Frequency Channel).

[0175] If the UE does not report this capability, the link direction of the SBFD symbol may depend on the set / scheduled transmit / receive and collision handling. Alternatively, this capability may also be defined as a basic capability for SBFD operation (i.e., support for dynamic indication of link direction and / or support for SBFD actions that do not require explicit indication of link direction in the SBFD symbol can be considered a higher capability).

[0176] (3.3.2) Option 2-2

[0177] Figure 8 This shows an example of the timing of the SBFD settings involved in Action Example 2 (Option 2-2). For example... Figure 8As shown, the UE can receive a DCI following a new DCI format that represents the link direction of SBFD symbols, and set the UL and DL for applying SBFD based on the content of the received DCI. The UE can then perform transmission and reception via the set UL / DL.

[0178] In this option, a new dynamic display can be imported to indicate the link direction of SBFD symbols. As described in Option 2-1, in existing 3GPP specifications, dynamic SFI can only cover the flexible symbols set by tdd-UL-DL-ConfigurationCommon. To indicate the link direction of SBFD DL symbols, it is sometimes necessary to mitigate the current limitations (e.g., Alt-b in Option 2-1).

[0179] DCI format 2_0 is a group common DCI. Considering UE services, the direction may be inherent to the UE, and therefore may not be suitable for representing the direction of SBFD symbols.

[0180] The signaling for dynamic link direction indication can be set to any of the following.

[0181] • Dynamic indicators, such as DCI (existing or new DCI format, UE-inherent DCI or group common DCI, existing RNTI or new RNTI) and / or MAC CE, can be used.

[0182] The existing DCI format is the UE-inherent DCI format (e.g., DCI format 0_1 / 0_2 / 0_3 / 1_1 / 1_2 / 1_3) or a group common or multicast DCI format (e.g., DCI 2_0 / 2_1 / 2_2 / 2_3 / 2_4 / 2_5 / 2_6 / 2_7 / 4_0 / 4_1 / 4_2 / 5_0).

[0183] • (Alt-1): Regardless of whether DL-SCH (Shared Channel) and / or UL-SCH scheduling exists, the new DCI field for direction indication in the existing DCI format is used.

[0184] Whether to include a new DCI field in the DCI format can be set via RRC. For example, if the new parameter SBFD-link-direction is set to "enabled" for the DCI format, the new DCI field can be included in the DCI format. Otherwise, the new DCI field may not be included in the DCI format.

[0185] • (Alt-2): Regardless of the presence of DL-SCH and / or UL-SCH scheduling, existing DCI fields are reused / reinterpreted using the existing DCI format.

[0186] Whether a specific existing DCI field needs to be reinterpreted to indicate the link direction of SBFD symbols can be based on a flag. This flag can be represented by a new DCI field (e.g., the value of a specific DCI field can be used as a flag). As a variation, the UE can determine that the DCI is an indication of the link direction (e.g., based on the flag mentioned above), and if it is a UE-inherent DCI format (e.g., DCI format 0_1 / 0_2 / 0_3 / 1_1 / 1_2 / 1_3), assume that the PDSCH / PUSCH is not scheduled by the DCI.

[0187] When the dynamic link direction indication uses the new DCI format, the monitoring DCI can be set to any of the following.

[0188] • (Alt-a): Monitor DCI periodically. The monitoring period can be explicitly set. Alternatively, it can be the same as the monitoring period for DCI 2_0.

[0189] • (Alt-b): Set to a non-periodic method. For example, the UE can monitor the DCI based on existing monitoring settings (e.g., search space and CORESET settings).

[0190] The Reference SCS (Reference SCS) related to the setting of the link direction of SBFD symbols can be set to any of the following.

[0191] • (Opt 1): The SCS specified by the same ReferenceSCS or referenceSubcarrierSpacing of tdd-UL-DL-ConfigurationCommon, which is located in the same time domain as the SBFD subband.

[0192] • (Opt 2): The same SCS as the Reference SCS used for SFI display in the serving cell.

[0193] • (Opt 3): The Reference SCS is explicitly set for link direction setting.

[0194] • (Opt 4): Predefined by 3GPP specifications (e.g., fixed as any of the 15 / 30 / 60 / 120 / 480 / 960kHz SCS)

[0195] The details / content of the link direction indication can be set to any of the following.

[0196] • (Opt-a): For the SBFD symbol representation bitmap during the link direction indication period, allocate 1 bit for each SBFD symbol during that period.

[0197] Candidate values ​​for each bit indication can be set to {D, U}, ({D, U, F}, or {D, U, F, not SBFD}). The "duration / period" can be defined by the 3GPP specification or explicitly set. Alternatively, it can be equal to the DCI monitoring period (in the case of periodic DCI for link direction indication).

[0198] The starting position of the bitmap application can be defined by the specification. For example, it can be set to the first slot (containing SBFD symbols) or the first (SBFD) symbol of the (current or next) DCI monitoring cycle.

[0199] Alternatively, the starting position of the bitmap application can be set to the slot of DCI (or PDSCH containing MAC CE) or the T1 slot / symbol after the end / start symbol, i.e., the first slot (containing SBFD symbol) or the first (SBFD) symbol.

[0200] Alternatively, the starting position of the bitmap application can be set to the slot of the HARQ (Hybrid automatic repeat request)-ACK PUCCH corresponding to the DCI (or the PDSCH containing MAC CE), or the T2 slot / symbol after the end / start symbol, i.e., the first slot (containing SBFD symbol) or the first (SBFD) symbol.

[0201] Here, the values ​​of T1 / T2 can be predefined by the 3GPP specifications, or set by the gNB (or indicated by DCI / MAC CE). When set by the gNB or indicated by DCI / MAC CE, the minimum value of T1 / T2 can be defined by the 3GPP specifications, or may depend on the UE's capabilities (or can be reported to the network in advance).

[0202] • (Opt-b): can represent the set of {slot index, bitmap} that maps each bit in the bitmap to a (SBFD) symbol in the slot.

[0203] • (Opt-c): Can set a set of {slot index, SBFD direction mode index}.

[0204] The list of SBFD direction modes can be predefined by the 3GPP specification or set by the gNB. For example, it can be set as a list / table containing rows / elements representing the SBFD direction modes of a time slot. An SBFD direction mode index can correspond to one SBFD direction mode.

[0205] The SBFD direction mode can be set to a bitmap that maps each bit to a (SBFD) symbol in the time slot (e.g., the content of the bitmap can be the same as Opt-a), or the value of "all-downlink" (representing the DL direction of all SBFD symbols in the time slot) or "all-uplink" (representing the UL direction of all SBFD symbols in the time slot), or the value of "number of SBFD symbols in the DL direction, number of SBFD symbols in the UL direction".

[0206] Dynamic link direction indication can be applied only once, or it can be applied periodically until another link direction indication is detected. Alternatively, it can be applied periodically within K1 time slots / subframes / ms, or periodically within K times. It can also be applied periodically within the DCI monitoring period.

[0207] The UE's action based on the link direction indication can be set to any of the following.

[0208] • When the link direction indication represents DL in SBFD symbols, the UE can receive the DL channel / signal in the DL subband of SBFD symbols (or the PRB that can be used as DL).

[0209] • When the link direction indication represents UL for SBFD symbols, the UE can transmit the UL channel / signal within the UL subband of the SBFD symbols (or the PRB that can be used as UL).

[0210] As a variation, when the link direction indication is flexible in its representation of SBFD symbols, the UE can receive DL channels / signals in the DL subband of SBFD symbols (or PRBs that can be used as DL), or transmit UL channels / signals in the UL subband (or PRBs that can be used as UL).

[0211] Furthermore, whether the UE transmits or receives can depend on the configured / scheduled transmission / reception and conflict handling. Alternatively, it may only be able to perform the configured transmission / reception (based on conflict handling) or the scheduled transmission / reception with a specific scheduling offset (indicating that the scheduled DCI was received long before this symbol).

[0212] Additionally, some constraints can be defined in advance as a variation. For example, the dynamic SFI indicating the link direction of the SBFD symbol needs to be received well before the SBFD symbol. For example, it can be set to M symbols, N time slots, or L milliseconds. The required offset (M / N / L) can be reported as a UE capability.

[0213] Regarding whether a UE supports dynamic indication of the link direction of SBFD symbols, new UE capabilities and reporting signaling (and RRC settings) can be defined for each UE / FR / FC (Frequency Channel).

[0214] If the UE does not report this capability, the link direction of the SBFD symbol may depend on the set / scheduled transmit / receive and collision handling. Alternatively, this capability may also be defined as a basic capability for SBFD operation (i.e., support for dynamic indication of link direction and / or support for SBFD actions that do not require explicit indication of link direction in the SBFD symbol can be considered a higher capability).

[0215] (3.4) Action Example 3

[0216] In this example, the semi-static setting and dynamic display of the link direction of SBFD symbols can be supported, enabled, or set.

[0217] When both semi-static setting and dynamic display of the link direction of SBFD symbols are supported, for SBFD symbols that are not represented as "D" or "U" direction by semi-static link direction setting, the link direction can be overridden by dynamic link direction indication. That is, dynamic link direction display can take precedence.

[0218] For example, in the case of SBFD symbols, if “F” is represented by a semi-static setting (i.e., not representing the “D” or “U” direction of the SBFD symbols), it can be dynamically overwritten as “D” or “U”.

[0219] When SBFD symbols are not represented as "D" or "U" directions through semi-static settings, there may be cases where dynamic display can cover the link direction or not. For example, in the case of SBFD symbols, if "D" (representing reception in the DL subband of the SBFD symbol) is represented by semi-static settings, it can be dynamically displayed as "U" (or "F"). Similarly, in the case of SBFD symbols, if "U" (representing transmission in the UL subband of the SBFD symbol) is represented by semi-static settings, it can be dynamically displayed as "D" (or "F").

[0220] Alternatively, in the case of SBFD symbols, if "D" (representing reception in the DL subband of the SBFD symbols) is represented by a semi-static setting, the UE may not expect a dynamic display of "U" (or "F"). Furthermore, in the case of SBFD symbols, if "U" (representing transmission in the UL subband of the SBFD symbols) is represented by a semi-static setting, the UE may not expect a dynamic display of "D" (or "F").

[0221] Based on the above action example, the UE is provided with a semi-static setting and / or dynamic display of the link direction of the SBFD symbol, so that the UE can identify in advance which of the UL subband and DL subband is allocated to the frequency direction region during the specified time (e.g., symbol or time slot) when the SBFD is applied.

[0222] Therefore, the UE can flexibly respond to situations where the allocation of UL and DL subbands changes dynamically or frequently within a specified time (e.g., symbols or time slots). This ability to dynamically and frequently change the subbands used for SBFD according to needs contributes to improving the capacity of the wireless communication system 10 and ensuring timely delivery of communication requirements.

[0223] (4) Other implementation methods

[0224] The above describes the embodiments, but the present invention is not limited to the embodiments described therein, and various modifications and improvements can be made, which will be obvious to those skilled in the art.

[0225] For example, in the above implementation, the term "sub-band" is used, but a sub-band can be simply referred to as a band, or it can be called an auxiliary band, a preparatory band, or other similar terms. Additionally, XDD / SBFD can be a temporary designation, or it can be referred to as other similar terms as described above.

[0226] Furthermore, in the above description, the terms configure, activate, update, indicate, enable, specify, and select can be interchanged. Similarly, the terms link, associate, correspond, and map can be interchanged, as can allocate, assign, monitor, and map.

[0227] Furthermore, specific, dedicated, UE specific, and UE dedicated can be used interchangeably. Similarly, common, shared, group-common, UE common, and UE shared can also be used interchangeably.

[0228] In this disclosure, the terms "precoding", "precoder", "weight (precoding weight)", "quasi-co-location (QCL)", "transmission configuration indication state (TCI state)", "spatial relation", "spatial domain filter", "transmit power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beamwidth", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0229] In addition, the block structure diagram used in the description of the above embodiments ( Figure 4 The diagram illustrates blocks organized by function. These functional blocks (structural units) are implemented through any combination of at least one of hardware and software. Furthermore, there are no particular limitations on the implementation method of each functional block. That is, each functional block can be implemented using a single device that is physically or logically combined, or by directly or indirectly (e.g., using wired, wireless, etc.) connecting two or more physically or logically separate devices. Functional blocks can also be implemented by combining software within the aforementioned single or multiple devices.

[0230] The functions include judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, receiving, sending, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning, but are not limited to these. For example, the functional block (structural part) that performs the sending function is called the transmitting unit or transmitter. In short, as mentioned above, there are no particular limitations on the implementation method.

[0231] Furthermore, the aforementioned gNB 100 and UE 200 (the device) can also function as a computer for processing the wireless communication method disclosed herein. Figure 9 This is a diagram illustrating an example of the hardware structure of the device. (As shown) Figure 9 As shown, the device can also be configured as a computer device including a processor 1001, a memory 1002, a storage device 1003, a communication device 1004, an input device 1005, an output device 1006, and a bus 1007.

[0232] Furthermore, in the following description, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware structure of the device can be configured as either a device comprising one or more of the illustrated components, or a device without any components.

[0233] The functional blocks of the device (refer to) Figure 4 This can be achieved through any hardware element or combination of hardware elements of the computer device.

[0234] In addition, the functions of the device are implemented by reading predetermined software (programs) into hardware such as processor 1001 and memory 1002, so that processor 1001 performs calculations and controls communication of communication device 1004 or controls at least one of reading and writing data in memory 1002 and storage device 1003.

[0235] The processor 1001 controls the computer as a whole by instructing the operating system to operate. The processor 1001 may also be a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc.

[0236] Furthermore, the processor 1001 reads programs (program code), software modules, data, etc., from at least one direction of memory 1002 in the storage device 1003 and the communication device 1004, and performs various processes accordingly. The program is used to cause the computer to perform at least a portion of the actions described in the above embodiments. Moreover, the various processes described above can be executed by one processor 1001, or by two or more processors 1001 simultaneously or sequentially. The processor 1001 can also be implemented using one or more chips. Furthermore, the program can also be transmitted from a network via a telecommunications line.

[0237] The memory 1002 is a computer-readable recording medium, and may be composed of at least one of the following: read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), and random access memory (RAM). The memory 1002 may be referred to as a register, cache, main memory (main storage device), etc. The memory 1002 may store programs (program code), software modules, etc., capable of executing the methods according to an embodiment of this disclosure.

[0238] Storage device 1003 is a computer-readable recording medium, and may be composed of at least one of the following: optical discs such as CD-ROM (Compact Disc ROM), hard disk drives, floppy disks, magneto-optical discs (e.g., compact discs, digital multipurpose discs, Blu-ray discs), smart cards, flash memory (e.g., cards, sticks, key drives), floppy disks, magnetic stripes, etc. Storage device 1003 may also be referred to as an auxiliary storage device. The aforementioned recording medium may, for example, be a database, server, or other suitable media that includes at least one of memory 1002 and storage device 1003.

[0239] The communication device 1004 is hardware (transceiver) used for communication between computers via at least one of a wired network and a wireless network. For example, it may also be called a network device, network controller, network card, communication module, etc.

[0240] The communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to realize at least one of frequency division duplex (FDD) and time division duplex (TDD).

[0241] Input device 1005 is an input device that accepts input from external sources (e.g., keyboard, mouse, microphone, switch, button, sensor, etc.). Output device 1006 is an output device that performs output to external sources (e.g., display, speaker, LED, etc.). Furthermore, input device 1005 and output device 1006 can also be integrated (e.g., a touch panel).

[0242] Furthermore, devices such as processor 1001 and memory 1002 are connected via bus 1007 for communicating information. Bus 1007 can be a single bus or can be composed of different buses between devices.

[0243] Furthermore, the device can 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), and a field-programmable gate array (FPGA), which can be used to implement some or all of the functional blocks. For example, the processor 1001 can also be implemented using at least one of these hardware components.

[0244] Furthermore, the notification of information is not limited to the forms / implementations described in this disclosure, and other methods may also be used. For example, information notification may be implemented through physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI), higher layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB))), other signals, or combinations thereof. Additionally, RRC signaling may also be referred to as an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0245] The various forms / implementations described in this disclosure can also be applied to systems utilizing LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (x being, for example, an integer or a decimal), Future Radio Access (FRA), New Radio (NR), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The system may include at least one of 802.20, Ultra-Wideband (UWB), Bluetooth (registered trademark), other suitable systems, and next-generation systems based on these systems. Alternatively, multiple systems may be combined (e.g., a combination of at least one of LTE and LTE-A with 5G).

[0246] The processing procedures, timing, and flow of the various forms / implementations described in this disclosure may be changed in order, provided there is no contradiction. For example, the elements of various steps are indicated using an illustrative order in the methods described in this disclosure, but are not limited to the specific order indicated.

[0247] In this disclosure, certain actions performed by the base station are sometimes also performed by its upper node, depending on the circumstances. In a network consisting of one or more network nodes having a base station, it is obvious that various actions performed to communicate with a terminal can be performed by at least one of the base station and other network nodes besides the base station (e.g., considering an MME or S-GW, but not limited to these). The above illustration depicts a case where there is only one other network node besides the base station, but it can also be a combination of multiple other network nodes (e.g., an MME and an S-GW).

[0248] It can output information and signals (information, etc.) from a higher (or lower) level to a lower (or higher) level. It can also input and output through multiple network nodes.

[0249] Input and output information can be stored in a specific location (e.g., memory) or managed using a management table. Input and output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0250] The determination can be made by the value represented by 1 bit (0 or 1), by a Boolean value (Boolean: true or false), or by comparing numerical values ​​(e.g., comparing with a predetermined value).

[0251] The various forms / implementations described in this disclosure can be used individually or in combination, and can be switched depending on the execution. Furthermore, the notification of predetermined information (e.g., a "It is X" notification) is not limited to being explicit, but can also be implicit (e.g., not notifying the predetermined information).

[0252] Software, whether called software, firmware, middleware, microcode, hardware description language, or by other names, should be broadly interpreted as referring to commands, command sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0253] In addition, software, commands, information, etc., can be sent and received via a transmission medium. For example, when software is sent from a webpage, server, or other remote source using at least one of wired technologies (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL) etc.) and wireless technologies (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0254] The information, signals, etc., described in this disclosure can also be represented using any of a variety of different technologies. For example, the data, commands, instructions, information, signals, bits, symbols, chips, etc., that may be involved in the above description as a whole can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination of these.

[0255] Furthermore, the terms used in this disclosure and those necessary for understanding this disclosure may be replaced with terms that have the same or similar meanings. For example, at least one of the channel and symbol may also be a signal (signaling). Additionally, a signal may also be a message. Furthermore, a component carrier (CC) may also be referred to as a carrier frequency, cell, frequency carrier, etc.

[0256] The terms “system” and “network” as used in this disclosure are used interchangeably.

[0257] Furthermore, the information, parameters, etc., described in this disclosure can be represented using absolute values, relative values ​​to predetermined values, or other corresponding information. For example, wireless resources can be indicated using indexes.

[0258] The names used for the above parameters are non-limiting in any respect. Furthermore, the formulas, etc., using these parameters may sometimes differ from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any appropriate name, and therefore the various names assigned to these channels and information elements are non-limiting in any respect.

[0259] In this disclosure, the terms "Base Station (BS)," "wireless 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" are used interchangeably. Sometimes, terms such as macro cell, small cell, femtocell, and picocell are also used to refer to base stations.

[0260] 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 also provide communication services through the base station subsystem (e.g., a small indoor base station (Remote Radio Head: RRH)).

[0261] Terms such as “cell” or “sector” refer to a portion or the entire coverage area of ​​at least one of the base stations and base station subsystems that provide communication services within that coverage area.

[0262] In this disclosure, the base station sending information to the terminal can also be replaced by the base station instructing the terminal on information-based control / actions.

[0263] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" are used interchangeably.

[0264] For mobile stations, those skilled in the art sometimes also use the following terms: 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, handheld device, user agent, mobile client, client, or some other appropriate terms.

[0265] At least one of the base station and mobile station can also be referred to as a transmitting device, receiving device, communication device, etc. Furthermore, at least one of the base station and mobile station can also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body can be a vehicle (e.g., a car, an airplane, etc.), a mobile body moving in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanized or unmanned). In addition, at least one of the base station and mobile station also includes devices that do not necessarily move during communication. For example, at least one of the base station and mobile station can be an IoT (Internet of Things) device such as a sensor.

[0266] Furthermore, the base station in this disclosure can also be replaced by a mobile station (user terminal, hereinafter the same). For example, various forms / implementations of this disclosure can also be applied to structures that replace communication between the base station and the mobile station with communication between multiple mobile stations (e.g., also referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the structure can also be configured such that the mobile station has the functions of the base station. In addition, terms such as "uplink" and "downlink" can also be replaced with terms corresponding to communication between terminals (e.g., "side"). For example, uplink channel, downlink channel, etc. can also be replaced with side channel (or side link).

[0267] Similarly, the mobile station in this disclosure can be replaced by a base station. In this case, the base station can also be configured to have the functions of a mobile station.

[0268] A radio frame can consist of one or more frames in the time domain. In the time domain, one or more frames can be called subframes. A subframe can also consist of one or more time slots in the time domain. A subframe can be a fixed time length (e.g., 1 ms) independent of the parameter set (numerology).

[0269] A parameter set can be communication parameters applied to at least one of the transmission and reception of a signal or channel. For example, a parameter set can represent at least one of the following: Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering processing performed by the transceiver in the frequency domain, and specific windowing processing performed by the transceiver in the time domain.

[0270] In the time domain, a time slot can be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.). A time slot can be a time unit based on a set of parameters.

[0271] A time slot can contain multiple mini-time slots. Each mini-time slot can consist of one or more symbols in the time domain. Additionally, a mini-time slot can also be called a sub-time slot. A mini-time slot can consist of fewer symbols than a time slot. PDSCH (or PUSCH) transmitted in time units larger than mini-time slots can be called PDSCH (or PUSCH) mapping type (type) A. PDSCH (or PUSCH) transmitted using mini-time slots can be called PDSCH (or PUSCH) mapping type (type) B.

[0272] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols can each be referred to by other corresponding names.

[0273] For example, a single subframe can be called a Transmission Time Interval (TTI), multiple consecutive subframes can also be called a TTI, and a single time slot or a single mini-time slot can also be called a TTI. In other words, at least one of a subframe or TTI can be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. Furthermore, the unit representing TTI can also be called a time slot, mini-time slot, etc., instead of a subframe.

[0274] Here, TTI refers, for example, to the smallest unit of time for scheduling in wireless communication. For instance, in an LTE system, the base station schedules the allocation of radio resources (bandwidth, transmit power, etc., available to each user terminal) in units of TTI. However, the definition of TTI is not limited to this.

[0275] The Time Interval (TTI) can be a unit of time for transmitting channel-coded data packets (transmission blocks), code blocks, codewords, etc., or it can be a processing unit such as scheduling or link adaptation. Furthermore, when a TTI is given, the actual time interval (e.g., the number of symbols) that the transmission block, code block, codeword, etc., are mapped to can be shorter than that TTI.

[0276] Furthermore, when one time slot or one mini time slot is referred to as a TTI, more than one TTI (i.e., more than one time slot or more than one mini time slot) can become the minimum time unit for scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit for scheduling can also be controlled.

[0277] A TTI with a duration of 1ms can also be called a normal TTI (TTI in LTE Rel.8-12), a long TTI, a normal subframe, a long subframe, or a time slot. A TTI shorter than a normal TTI can also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini time slot, a sub-time slot, or a time slot.

[0278] Furthermore, for long TTIs (e.g., normal TTIs, subframes, etc.), they can be replaced with TTIs with a duration of more than 1ms. For short TTIs (e.g., shortened TTIs, etc.), they can be replaced with TTIs with a duration of less than long TTIs but more than 1ms.

[0279] A resource block (RB) is a unit of resource allocation in both the time and frequency domains. In the frequency domain, it can contain one or more consecutive subcarriers. The number of subcarriers contained in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers contained in an RB can also be determined based on the parameter set.

[0280] In addition, the time domain of an RB can contain one or more symbols, which can be a time slot, a mini time slot, a subframe, or a TTI in length. A TTI, a subframe, etc., can each be composed of one or more resource blocks.

[0281] In addition, one or more RBs can also be called Physical Resource Block (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB pair, RB pair, etc.

[0282] In addition, a resource block can consist of one or more resource elements (REs). For example, one RE can be a radio resource area consisting of one subcarrier and one symbol.

[0283] The Bandwidth Part (BWP) (also known as partial bandwidth, etc.) can represent a subset of contiguous common resource blocks (RBs) used for a certain parameter set in a given carrier. Here, common RBs can be determined by indexing RBs based on a common reference point of that carrier. PRBs can be defined and numbered within a BWP.

[0284] A BWP can include a UL BWP and a DL BWP. One or more BWPs can be set for a UE within a single carrier.

[0285] At least one of the configured BWPs can be active, and the UE may not intend to transmit or receive predetermined signals / channels outside of the active BWP. Furthermore, the terms "cell," "carrier," etc., used in this disclosure can be replaced with "BWP."

[0286] The structures of radio frames, subframes, time slots, mini-time slots, and symbols described above are merely illustrative. For example, the number of subframes contained in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots contained within a time slot, the number of symbols and RBs contained in a time slot or mini-time slot, the number of subcarriers contained in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc., can be varied in many ways.

[0287] The terms “connected,” “coupled,” or any variations thereof are intended to indicate any direct or indirect connection or combination between two or more elements, including cases where there is one or more intermediate elements between the two elements that are “connected” or “coupled.” The combination or connection between elements can be physical, logical, or a combination of these. For example, “access” can be used instead of “connected.” In the context of this disclosure, it can be understood that two elements are “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, and, as some non-limiting and non-inclusive examples, they are “connected” or “coupled” to each other using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, and light (both visible and invisible) region.

[0288] The reference signal can be simply called the Reference Signal (RS), or, depending on the standard applied, the pilot.

[0289] As used in this disclosure, the word "based on" does not mean "based on only" unless otherwise expressly stated. In other words, the word "based on" means both "based on only" and "based on at least".

[0290] Alternatively, the "unit" in the structure of the above devices can be replaced with "section", "circuit", "equipment", etc.

[0291] Any reference to elements using designations such as "first," "second," etc., as used in this disclosure does not necessarily limit the number or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Therefore, references to "first" and "second" do not imply that only two elements can be used there, or that in some form the first element must precede the second element.

[0292] When the terms "include," "including," and their variations are used in this disclosure, these terms, like the term "comprising," imply inclusion. Furthermore, the term "or" as used in this disclosure does not refer to XOR.

[0293] In this disclosure, for example, in cases where articles are added through translation, such as in English (e.g., a, an, and the), this disclosure may also include cases where the noun following these articles is in a plural form.

[0294] As used in this disclosure, terms such as "determining" and "determining" sometimes encompass a variety of actions. For example, "determining" or "determining" may include actions such as judging, calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, database, or other data structure), and ascertaining, which are considered as actions of "determining" or "determining." Furthermore, "determining" or "determining" may include actions such as receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, and accessing (e.g., accessing data in memory), which are considered as actions of "determining" or "determining." Additionally, "determining" or "determining" may include actions such as resolving, selecting, choosing, establishing, and comparing, which are considered as actions of "determining" or "determining." In other words, "judgment" and "decision" can include matters that are considered as having been "judged" or "decided". In addition, "judgment (decision)" can also be replaced by "assuming", "expecting", "considering", etc.

[0295] In this disclosure, the phrase "A and B are different" can mean "A and B are not the same." Furthermore, this phrase can also mean "A and B are each different from C." Terms such as "separate" and "combined" can also be interpreted in the same way as "different."

[0296] Figure 10 An example of the structure of vehicle 2001 is shown. For example... Figure 10 As shown, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a gear 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.

[0297] The drive unit 2002 may consist of, for example, an engine, a motor, or a hybrid power system of an engine and a motor.

[0298] The steering unit 2003 includes at least a steering wheel (also called a steering wheel) 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.

[0299] The electronic control unit 2010 consists of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (I / O port) 2033. Signals from various sensors 2021 to 2027 of the vehicle are input to the electronic control unit 2010. The electronic control unit 2010 can also be referred to as an ECU (Electronic Control Unit).

[0300] The signals from various sensors 2021 to 2028 include current signals from current sensor 2021 that senses the current of the motor, speed signals of the front and rear wheels obtained by speed sensor 2022, air pressure signals of the front and rear wheels obtained by air pressure sensor 2023, vehicle speed signals obtained by vehicle speed sensor 2024, acceleration signals obtained by acceleration sensor 2025, accelerator pedal input signals obtained by accelerator pedal sensor 2029, brake pedal input signals obtained by brake pedal sensor 2026, gear lever operation signals obtained by gear lever sensor 2027, and detection signals obtained by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0301] The Information Service Unit 2012 consists of various devices such as a car navigation system, audio system, speakers, television, and radio, which provide various information such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The Information Service Unit 2012 uses information obtained from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of vehicle 1.

[0302] The Driver Assistance System 2030 comprises various devices used to prevent accidents or reduce driver workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning devices (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps), gyroscope systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System)), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. Furthermore, the Driver Assistance System 2030 transmits and receives various information via the communication module 2013 to achieve driver assistance or autonomous driving functions.

[0303] The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 1 via the communication port. For example, the communication module 2013 can send and receive data with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axle 2009, microprocessor 2031 in the electronic control unit 2010, memory (ROM, RAM) 2032, and sensors 2021 to 2028 in the vehicle 2001 via the communication port 2033.

[0304] The communication module 2013, controlled by the microprocessor 2031 of the electronic control unit 2010, is a communication device capable of communicating with external devices. For example, it can transmit and receive various types of information with external devices via wireless communication. The communication module 2013 can be located inside or outside the electronic control unit 2010. External devices can be, for example, base stations, mobile stations, etc.

[0305] The communication module 2013 transmits current signals from the current sensor, which are input to the electronic control unit 2010, to an external device via wireless communication. Additionally, the communication module 2013 also transmits to the external device via wireless communication the following signals input to the electronic control unit 2010: front and rear wheel speed signals obtained by the speed sensor 2022; front and rear wheel air pressure signals obtained by the air pressure sensor 2023; vehicle speed signals obtained by the vehicle speed sensor 2024; acceleration signals obtained by the acceleration sensor 2025; accelerator pedal depressor signals obtained by the accelerator pedal sensor 2029; brake pedal depressor signals obtained by the brake pedal sensor 2026; gear shift lever operation signals obtained by the gear shift lever sensor 2027; and detection signals for detecting obstacles, vehicles, pedestrians, etc., obtained by the object detection sensor 2028.

[0306] The communication module 2013 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) sent from external devices and displays it on the information service unit 2012 provided by the vehicle. Furthermore, the communication module 2013 stores the various information received from external devices in a memory 2032 available to the microprocessor 2031. The microprocessor 2031 can also control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gearshift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axles 2009, and sensors 2021-2028 provided by the vehicle 2001 based on the information stored in the memory 2032.

[0307] Label Explanation

[0308] 10 Wireless Communication Systems

[0309] 20 NG-RAN

[0310] 100 gNB

[0311] 200 UE

[0312] 210 Wireless Signal Transceiver Unit

[0313] 220 Enlarged Section

[0314] 230 Modulation and Demodulation Section

[0315] 240 Control Signal & Reference Signal Processing Unit

[0316] 250 Encoding / Decoding Unit

[0317] 260 Data Transceiver Department

[0318] 270 Control Department

[0319] 1001 processor

[0320] 1002 Memory

[0321] 1003 Storage device

[0322] 1004 Communication device

[0323] 1005 Input Device

[0324] 1006 Output Device

[0325] 1007 bus

[0326] Vehicle 2001

[0327] 2002 Drive Unit

[0328] 2003 Steering Unit

[0329] 2004 Accelerator Pedal

[0330] 2005 Brake Pedal

[0331] 2006 gearshift lever

[0332] Front wheels around 2007

[0333] 2008 rear wheels (left and right)

[0334] 2009 axle

[0335] 2010 Electronic Control Department

[0336] 2012 Information Service Department

[0337] 2013 Communication Module

[0338] 2021 Current Sensor

[0339] 2022 Speed ​​Sensor

[0340] 2023 Barometric Pressure Sensor

[0341] 2024 vehicle speed sensor

[0342] 2025 Accelerometer

[0343] 2026 Brake Pedal Sensor

[0344] 2027 Gearshift sensor

[0345] 2028 Object Detection Sensor

[0346] 2029 Accelerator Pedal Sensor

[0347] 2030 Driver Assistance Systems Department

[0348] 2031 microprocessor

[0349] 2032 Memory (ROM, RAM)

[0350] 2033 Communication Port

Claims

1. A terminal, comprising: The communication unit transmits and receives wireless signals following the sub-band full-duplex communication mode, which is the non-overlapping allocation of uplink sub-bands and downlink sub-bands in the frequency direction within a specified time based on time division duplex. The receiving unit receives a message containing higher-layer parameters indicating which of the uplink subband and the downlink subband has been allocated; as well as The control unit controls uplink transmission in the uplink subband or downlink reception in the downlink subband based on the parameters.

2. A terminal, comprising: The communication unit transmits and receives wireless signals following the sub-band full-duplex communication mode, which is the non-overlapping allocation of uplink sub-bands or downlink sub-bands in the frequency direction within a specified time based on time division duplex. The receiving unit receives downlink control information indicating which of the uplink subband and the downlink subband has been allocated; as well as The control unit controls uplink transmission in the uplink subband or downlink reception in the downlink subband based on the downlink control information.

3. A terminal, comprising: The communication unit transmits and receives wireless signals following the sub-band full-duplex communication mode, which is the non-overlapping allocation of uplink sub-bands or downlink sub-bands in the frequency direction within a specified time based on time division duplex. The receiving unit receives a message containing higher-layer parameters indicating which of the uplink subband and the downlink subband is allocated, and downlink control information indicating which of the uplink subband and the downlink subband is allocated. as well as The control unit, when not indicating whether it is assigned to the uplink subband or the downlink subband via the parameters, controls uplink transmission in the uplink subband or downlink reception in the downlink subband based on the downlink control information.

4. A wireless base station, comprising: The communication unit transmits and receives wireless signals following a sub-band full-duplex communication mode, wherein the sub-band full-duplex communication mode allocates uplink sub-bands or downlink sub-bands in a non-overlapping frequency direction within a specified time period based on time division duplex; and The transmitting unit transmits a message containing higher-layer parameters indicating which of the uplink subband and the downlink subband has been allocated.

5. A wireless base station, comprising: The communication unit transmits and receives wireless signals following a sub-band full-duplex communication mode, wherein the sub-band full-duplex communication mode allocates uplink sub-bands or downlink sub-bands in a non-overlapping frequency direction within a specified time period based on time division duplex; and The transmitting unit transmits downlink control information indicating which of the uplink subband and the downlink subband has been allocated.

Images