Terminal, base station, wireless communication system, and wireless communication method

Abstract

Provided is a terminal comprising: a control unit configured to execute physical-layer measurement relating to inter-link interference between terminals; and a transmission unit configured to transmit a report of the physical-layer measurement. The control unit controls transmission of the report of the physical-layer measurement using resources for a duplexing method capable of performing simultaneous communication of an uplink signal and a downlink signal within a time division duplex band.

Description

Terminal, base station, wireless communication system, and wireless communication method

[0001] This disclosure relates to terminals, base stations, wireless communication systems, and wireless communication methods that respond to CLI (Cross-Link Interference) reporting.

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

[0003] For example, 3GPP Release 18 considers extensions to duplexing schemes (Non-Patent Document 1). Specifically, a new duplexing scheme called SBFD (Sub-Band non-overlapping Full Duplex) is proposed, which enables simultaneous use of downlink (DL) and uplink (UL) within a time-division duplex (TDD) band carrier. SBFD may also be interpreted as XDD (Cross Division Duplex).

[0004] "New SI: Study on evolution of NR duplex operation", RP-213591, 3GPP TSG RAN#94-e, 3GPP, December 2021

[0005] In such duplexing extensions, interference countermeasures, such as cross-link interference (CLI), become important. For example, a case where the uplink from terminal #1 to base station #1 interferes with the downlink from base station #2 to terminal #2 (UE-to-UE CLI) is conceivable. In such a case, Layer 1 CLI reports are expected to include CLI-RSSI (Received Signal Strength Indicator) and CLI-SRS (Sounding Reference Signal)-RSRP (Reference Signal Received Power).

[0006] After careful consideration, the inventors found that, assuming SBFD (Split-Based Functional Decay), it is necessary to clarify the resources related to Layer 1 CLI reports.

[0007] Therefore, this disclosure has been made to solve the aforementioned problems and aims to provide a terminal, base station, wireless communication system, and wireless communication method that can perform measurements or reports related to Layer 1 CLI reports using appropriate resources, assuming SBFD.

[0008] The disclosed aspect is a terminal comprising a control unit that performs physical layer measurements regarding inter-link interference between terminals, and a transmission unit that transmits a report of the physical layer measurements, wherein the control unit controls the reporting of the physical layer measurements using resources for a duplexing scheme capable of simultaneous communication of uplink and downlink signals within a time-division duplex band.

[0009] The disclosed aspect is a base station comprising a receiving unit that receives reports of physical layer measurements relating to inter-link interference between terminals, and a control unit that assumes the reception of the physical layer measurement reports, wherein the control unit assumes that the terminals perform the reporting of the physical layer measurements using resources for a duplexing scheme capable of simultaneous communication of uplink and downlink signals within a time-division duplex band.

[0010] The disclosed aspect is a wireless communication system comprising a terminal and a base station, wherein the terminal comprises a control unit that performs physical layer measurements relating to inter-link interference between terminals, and a transmitting unit that transmits a report of the physical layer measurements, and the control unit controls the reporting of the physical layer measurements using resources for a duplexing scheme that enables simultaneous communication of uplink and downlink signals within a time-division duplex band.

[0011] The disclosed aspect is a wireless communication method comprising the steps of: performing a physical layer measurement regarding inter-link interference between terminals; transmitting a report of the physical layer measurement; and the control unit controlling the report of the physical layer measurement using resources for a duplexing scheme capable of simultaneous communication of uplink and downlink signals within a time-division duplex band.

[0012] Figure 1 is an overall schematic diagram of the wireless communication system 10. Figure 2 is a diagram showing the frequency range used in the wireless communication system 10. Figure 3 is a diagram showing an example configuration of wireless frames, subframes, and slots used in the wireless communication system 10. Figure 4 is a functional block configuration diagram of UE200. Figure 5 is a functional block configuration diagram of gNB100. Figure 6 is a diagram illustrating the problem. Figure 7 is a diagram illustrating the problem. Figure 8 is a diagram illustrating operation example 1. Figure 9 is a diagram showing an example of the hardware configuration of gNB100 and UE200. Figure 10 is a diagram showing an example configuration of vehicle 2001.

[0013] The embodiments will be described below with reference to the drawings. Note that identical or similar reference numerals are used to denote the same functions and components, and their descriptions will be omitted as appropriate.

[0014] [Embodiment] (1) Overall schematic diagram 1 of the wireless communication system is an overall schematic diagram of the wireless communication system 10 according to the embodiment. The wireless communication system 10 is a wireless communication system in accordance with 5G New Radio (NR) and includes a Next Generation-Radio Access Network 20 (hereinafter referred to as NG-RAN20) and a terminal 200 (hereinafter referred to as UE (User Equipment) 200).

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

[0016] NG-RAN20 includes base station 100 (hereinafter referred to as gNB100). The specific configuration of the wireless communication system 10, including the number of gNB100 and UE200, is not limited to the example shown in Figure 1.

[0017] NG-RAN20 actually includes multiple NG-RAN Nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown). Note that NG-RAN20 and 5GC may also be simply referred to as the "network".

[0018] The gNB100 is a 5G-compliant radio base station that performs 5G-compliant wireless communication with the UE200. The gNB100 and UE200 can support Massive MIMO (Multiple-Input Multiple-Output), which generates a more directional beamband by controlling radio signals transmitted from multiple antenna elements; carrier aggregation (CA), which uses multiple component carriers (CCs) bundled together; and dual connectivity (DC), which enables simultaneous communication with two or more transport blocks between the UE and each of the two NG-RAN Nodes.

[0019] Firstly, the wireless communication system 10 supports multiple frequency ranges (FRs). Figure 2 shows the frequency ranges used in the wireless communication system 10. For example, as shown in Figure 2, the wireless communication system 10 supports FR1, FR2-1, and FR2-2. The frequency bands for each FR are as follows:

[0020] FR1: 410 MHz to 7.125 GHz FR2-1: 24.25 GHz to 52.6 GHz FR2-2: Over 52.6 GHz to 71 GHz In FR1, 15, 30, or 60 kHz Sub-Carrier Spacing (SCS) may be used, and a bandwidth (BW) of 5 to 100 MHz may be used. FR2 is a higher frequency than FR1, and 60 kHz or 120 kHz (240 kHz may be included) SCS may be used, and a bandwidth (BW) of 50 to 400 MHz may be used.

[0021] Note that SCS may also be interpreted as numerology. Numerology is defined in 3GPP TS38.300 and corresponds to a single subcarrier interval in the frequency domain.

[0022] Furthermore, the wireless communication system 10 also supports higher frequency bands than the FR2-2 frequency band. Specifically, the wireless communication system 10 supports frequency bands exceeding 52.6 GHz up to 71 GHz or 114.25 GHz.

[0023] Secondly, the wireless communication system 10 may correspond to the wireless frames, subframes, and slots shown in Figure 3.

[0024] As shown in Figure 3, one slot consists of 14 symbols, and the larger (wider) the SCS, the shorter the symbol duration (and slot duration). In addition to 15kHz, 30kHz, 60kHz, 120kHz, and 240kHz, 480kHz, 960kHz, etc., may also be used for the SCS.

[0025] Furthermore, the number of symbols constituting one slot does not necessarily have to be 14 (for example, 28 symbols, 56 symbols). In addition, the number of slots per subframe may differ depending on the SCS.

[0026] (2) Functional Block Configuration of the Wireless Communication System Next, the functional block configuration of the wireless communication system 10 will be described.

[0027] First, we will describe the functional block configuration of the UE200.

[0028] FIG. 4 is a functional block configuration diagram of UE200. As shown in FIG. 4, UE200 includes a radio signal transceiver unit 210, an amplifier unit 220, a modulation / demodulation unit 230, a control signal / reference signal processing unit 240, an encoding / decoding unit 250, a data transceiver unit 260, and a control unit 270.

[0029] The radio signal transceiver unit 210 transmits and receives radio signals according to NR. The radio signal transceiver unit 210 supports Massive MIMO, CA that bundles a plurality of CCs for use, and DC that enables simultaneous communication between the UE and two NG-RAN Nodes respectively.

[0030] The amplifier unit 220 is composed of a PA (Power Amplifier) / LNA (Low Noise Amplifier), etc. The amplifier unit 220 amplifies the signal output from the modulation / demodulation unit 230 to a predetermined power level. Also, the amplifier unit 220 amplifies the RF signal output from the radio signal transceiver unit 210.

[0031] The modulation / demodulation unit 230 performs data modulation / demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB100 or other gNB). In the modulation / demodulation unit 230, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform - Spread (DFT-S-OFDM) may be applied. Also, DFT-S-OFDM may be used not only for the uplink (UL) but also for the downlink (DL).

[0032] The control signal / reference signal processing unit 240 performs processing related to various control signals transmitted and received by UE200, and processing related to various reference signals transmitted and received by UE200.

[0033] Specifically, the control signal / reference signal processing unit 240 receives various control signals transmitted from the gNB100 via a predetermined control channel, such as control signals for the radio resource control layer (RRC). The control signal / reference signal processing unit 240 also transmits various control signals to the gNB100 via a predetermined control channel.

[0034] The control signal / reference signal processing unit 240 performs processing using reference signals (RS) such as the Demodulation Reference Signal (DMRS) and the Phase Tracking Reference Signal (PTRS).

[0035] DMRS is a terminal-specific, known reference signal (pilot signal) between the base station and the terminal used to estimate the fading channel used for data demodulation. PTRS is a terminal-specific reference signal intended to estimate phase noise, which is a problem in the high-frequency band.

[0036] In addition to DMRS and PTRS, the reference signals may also include Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Positioning Reference Signal (PRS) for location information.

[0037] Furthermore, channels include control channels and data channels. Control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel), Downlink Control Information (DCI) including Random Access Radio Network Temporary Identifier (RA-RNTI), and Physical Broadcast Channel (PBCH), among others.

[0038] Furthermore, data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel), among others. "Data" refers to data transmitted through a data channel. A data channel may also be interpreted as a shared channel.

[0039] Here, the control signal / reference signal processing unit 240 may receive downlink control information (DCI). The DCI includes fields that store existing fields such as DCI Formats, Carrier indicator (CI), BWP indicator, FDRA (Frequency Domain Resource Assignment), TDRA (Time Domain Resource Assignment), MCS (Modulation and Coding Scheme), HPN (HARQ Process Number), NDI (New Data Indicator), and RV (Redundancy Version).

[0040] The value stored in the DCI Format field is an information element that specifies the DCI format. The value stored in the CI field is an information element that specifies the CC to which the DCI applies. The value stored in the BWP indicator field is an information element that specifies the BWP to which the DCI applies. The BWP that can be specified by the BWP indicator is set by an information element (BandwidthPart-Config) included in the RRC message. The value stored in the FDRA field is an information element that specifies the frequency domain resource to which the DCI applies. The frequency domain resource is identified by the value stored in the FDRA field and an information element (RA Type) included in the RRC message. The value stored in the TDRA field is an information element that specifies the time domain resource to which the DCI applies. The time domain resource is identified by the value stored in the TDRA field and an information element (pdsch-TimeDomainAllocationList, push-TimeDomainAllocationList) included in the RRC message. The time domain resource may also be identified by the value stored in the TDRA field and the default table. The value stored in the MCS field is an information element that specifies the MCS to which the DCI applies. The MCS is identified by the value stored in MCS and the MCS table. The MCS table may be specified by the RRC message or identified by RNTI scrambling. The value stored in the HPN field is an information element that specifies the HARQ Process to which DCI is applied. The value stored in NDI is an information element that determines whether the data to which DCI is applied is initial transmission data. The value stored in the RV field is an information element that specifies the redundancy of the data to which DCI is applied.

[0041] The encoding / decoding unit 250 performs data splitting / concatenation and channel coding / decoding for each predetermined communication destination (gNB100 or other gNB).

[0042] Specifically, the encoding / decoding unit 250 divides the data output from the data transmission / reception unit 260 into predetermined sizes and performs channel coding on the divided data. The encoding / decoding unit 250 also decodes the data output from the modulation / demodulation unit 230 and concatenates the decoded data.

[0043] The data transmission / reception unit 260 performs the transmission and reception of Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, the data transmission / reception unit 260 performs assembly / decomposition of PDUs / SDUs at multiple layers (such as the Media Access Control Layer (MAC), Radio Link Control Layer (RLC), and Packet Data Convergence Protocol Layer (PDCP)). In addition, the data transmission / reception unit 260 performs error correction and retransmission control of data based on HARQ (Hybrid Automatic Repeat Request).

[0044] The control unit 270 controls each functional block that makes up the UE200. For example, the control unit 270 performs control related to the communication of uplink signals (UL signals) and downlink signals (DL signals) (hereinafter referred to as "specific communication") within the time-division duplex (TDD) band.

[0045] The specific communication may also be referred to as SBFD (Sub-Band non-overlapping Full Duplex), a new duplexing (redundancy) scheme that enables simultaneous use of the downlink (DL) and uplink (UL) within the carrier in the time-division duplex (TDD) band. SBFD may also be interpreted as XDD (Cross Division Duplex).

[0046] A specific time resource is a time resource to which SBFD may be applied. A specific time resource may also be interpreted as an SBFD resource (SBFD symbol / slot) that is configured quasi-statically or dynamically in the time direction (or time domain). A specific time resource may also be interpreted as a resource to which UL sub-band(s) and DL sub-band(s) are configured quasi-statically or dynamically simultaneously in the time direction (or time domain).

[0047] In this embodiment, the control unit 270 may be configured to perform physical layer measurements related to inter-link interference (UE to UE CLI) between terminals. The radio signal transceiver unit 210 may be configured to be configured to transmit reports of physical layer measurements. The control unit 270 controls the reporting of physical layer measurements using resources for communication of uplink signals (hereinafter referred to as UL signals) and downlink signals (hereinafter referred to as DL signals) within the time-division duplex band (hereinafter referred to as specific communication).

[0048] Physical layer measurements related to UE to UE CLI may be referred to as L1 CLI measurements. L1 CLI measurements may include L1-CLI-RSSI (Received Signal Strength Indicator) measurements or L1-CL1-RSSP (Reference Signal Received Power) measurements. The reference signal used in L1-CL1-RSSP may be SRS. The results of the physical layer measurements related to UE to UE CLI may be referred to as L1-CLI-RSSI measurement results or L1-CL1-RSSP measurement results. Reports of physical layer measurements may be referred to as Layer 1 CLI reports or L1 CLI reports.

[0049] Secondly, the functional block configuration of the gNB100 will be described.

[0050] Figure 5 is a functional block diagram of the gNB100. As shown in Figure 5, the gNB100 has a receiving unit 110, a transmitting unit 120, and a control unit 130.

[0051] The receiver 110 receives various signals from the UE200. The receiver 110 may also receive the UL signal via PUCCH or PUSCH.

[0052] The transmitter 120 transmits various signals to the UE200. The transmitter 120 may also transmit DL signals via PDCCH or PDSCH.

[0053] The control unit 130 controls the gNB100. For example, the control unit 130 performs control related to specific-bandwidth (SBFD) communication of uplink signals (UL signals) and downlink signals (DL signals) within the time-division duplex (TDD) band.

[0054] In this embodiment, the control unit 130 may be configured to assume that the terminal (UE200) controls the reporting of physical layer measurements using resources for communication (specific communication) of uplink signals (UL signals) and downlink signals (DL signals) within the time-division duplex (TDD) band. The receiving unit 110 may be configured to receive reports of physical layer measurements regarding inter-link interference (UE to UE CLI) between terminals.

[0055] (3) The first task will be explained in terms of resource allocation for gNB100.

[0056] As shown in the upper part of Figure 6, in Releases 15 / 16 / 17, the gNB100 sets or specifies "DL", "F (Flexible)", or "UL" for each symbol. On the other hand, as shown in the lower part of Figure 6, in Release 18, the gNB100 sets or specifies "DL" for the symbol of one frequency resource (e.g., sub-band(s)) and sets or specifies "UL" for the symbol of another frequency resource (e.g., sub-band(s)). This method may also be called SBFD (Sub-Band non-overlapping Full Duplex).

[0057] Secondly, we will explain the interference associated with the adoption of SBFD. As shown in Figure 7, several types of interference are possible with the adoption of SBFD.

[0058] The first type of interference is self interference at gNB. Self interference at gNB can also be called intra-gNB interference. For example, taking gNB0 as an example, the uplink from UE0 to gNB0 and the downlink from gNB0 to UE0 can interfere with each other.

[0059] The second type of interference is CLI at gNB. CLI at gNB may also be called inter-gNB interference or gNB-to-gNB CLI. For example, a downlink from gNB0 to UE0 can interfere with the uplink received by gNB1 from UE1. Similarly, a downlink from gNB1 to UE1 can interfere with the uplink received by gNB0 from UE0.

[0060] The third type of interference is CLI at UE. CLI at UE can also be called UE-to-UE CLI. For example, an uplink from UE0 to gNB0 can interfere with a downlink received by UE1 from gNB1.

[0061] Thirdly, I will discuss the challenges related to the UE-to-UE CLI.

[0062] In UE-to-UE CLI, L1 CLI reports are expected to include CLI-RSSI and CLI-SRS-RSRP reports.

[0063] After thorough consideration, the inventors found it necessary to clarify the measurement resources and opportunities for the Layer 1 CLI report when considering SBFD.

[0064] (4) Definitions of Terms The following sections will explain the definitions of terms related to SBFD.

[0065] A semi-static DL slot / symbol is a slot / symbol configured as DL by a higher-level parameter (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated).

[0066] A semi-static UL slot / symbol is a slot / symbol that is configured as a UL by a higher-level parameter (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated).

[0067] A semi-static flexible slot / symbol is a slot / symbol that is set as Flexible by a higher-level parameter (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated).

[0068] A Dynamic DL slot / symbol is a slot / symbol that is set as Flexible by a higher-level parameter (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) and is specified as DL by DCI Format 2_0.

[0069] A Dynamic UL slot / symbol is a slot / symbol that is set as Flexible by a higher-level parameter (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) and specified as UL by DCI Format 2_0.

[0070] A Dynamic Flexible slot / symbol is a slot / symbol that is set as Flexible by a higher-level parameter (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) and is specified as Flexible by DCI Format 2_0.

[0071] (5) Example of Operation In order to solve the above-mentioned problems, the following example of operation may be provided. Specifically, the UE200 controls the L1 CLI report for UE to UE CLI using resources for SBFD. The measurement resources for SBFD may be called CSI (Channel State Information) for L1 CSI report.

[0072] (5.1) Operation Example 1 Operation Example 1 exemplifies an SBFD reference resource as a resource for SBFD. The SBFD reference resource may be interpreted as a reference resource used in a case where SBFD is assumed. As a method for determining the SBFD reference resource, the SBFD reference resource may also be called an SBFD CSI reference resource. The following options are possible for determining the SBFD CSI reference resource.

[0073] In Option 1-1, the reference resource for SBFD (CSI reference resource) may be determined in the same way as the reference resource for reporting existing L1-RSRP / L1-SINR (CSI reference resource).

[0074] The CSI reference resource for reporting existing L1-RSRP / L1-SINR may be determined according to 3GPP TS38.214 §5.2.2.5 “CSI reference resource determination”, as shown in Figure 8. This section primarily describes the CSI reference resource related to the time domain.

[0075] Specifically, the CSI reference resource for CSI reporting in Uplink slot n’ is one Downlink slot “n - n_csi,ref - K_offset×2^μ DL / 2^μ K_offset ” defined thereby. K_offset is a parameter defined by the upper layer, and μ K_offset is the SCS setting of K_offset. Here, n is expressed as n = Floor (n’×2^μ DL / 2^μ UL ) + Floor ((N^CA_slot,offset,UL / 2^μ offset,UL - N^CA_slot,offset,DL / 2^μo ffset,DL )×2^μ DL ). μ DL is the SCS setting of DL, and μ UL is the SCS setting of UL. N^CA_slot,offset and μ offset,UL are parameters set by the upper layer.

[0076] For Periodic or Semi-persistent CSI reporting, n_csi,ref is defined as follows. When one CSI-RS / SSB resource is set, n_csi,ref is the minimum value greater than or equal to 4×2^μ DL corresponding to a valid downlink slot. When multiple CSI-RS / SSB resources are set, n_csi,ref is the minimum value greater than or equal to 5×2^μ DL corresponding to a valid downlink slot.

[0077] For Aperiodic CSI reporting, n_csi,ref is defined as follows: If the UE is specified in DCI to report the CSI in the same slot as the CSI request, n_csi,ref is the reference resource in the same valid downlink slot as the CSI request. If the UE is not specified in DCI to report the CSI in the same slot as the CSI request, n_csi,ref is the smallest value greater than or equal to Floor (Z' / N^slot_symb). n_csi,ref corresponds to a valid downlink slot, and Z' is the value corresponding to the delayed request.

[0078] Furthermore, the serving cell assumes the following slots are valid downlink slots. For example, a valid downlink slot may be a slot containing at least one Downlink or Flexible symbol configured by a higher layer. Valid downlink slots are not included in the measurement gap configured for the UE.

[0079] In option 1-2, the reference resource for SBFD (CSI reference resource) may be determined separately from the existing reference resource for L1-RSRP / L1-SINR reporting (CSI reference resource).

[0080] In Option 1-2, the measurement resources for SBFD may be determined separately from the existing CSI reference resources used for reporting L1-RSRP / L1-SINR.

[0081] Specifically, the CSI reference resource for CSI reporting in slot n' is one SBFD slot “n-n_csi,ref-K_offset×2^μ DL / 2^μ K_offsetIt is defined by ". It differs from the existing CSI reference resource for L1-RSRP / L1-SINR reporting in that one "Downlink" slot has been changed to one "SBFD" slot. K_offset is a parameter defined by the higher layer, μ K_offset This is the SCS setting for K_offset. Here, n is n = Floor (n'×2^μ DL / 2^μ UL )+Floor ((N^CA_slot,offset,UL / 2^μ offset , UL -N^CA_slot,offset,DL / 2^μ offset,DL ) × 2^μ DL It is represented by μ. DL This is the SCS setting for DL, μ UL This is the SCS setting for UL. N^CA_slot, offset and μ offset,UL This is a parameter set by the higher layer.

[0082] For periodic or semi-persistent CSI reporting, n_csi,ref is defined as follows: When one L1 CLI measurement resource is configured, n_csi,ref is X1×2^μ corresponding to a valid SBFD slot (or downlink slot). CLi-RS (X1 × 2^μ DL This is the minimum value greater than or equal to ). When multiple L1 CLI measurement resources are configured, n_csi,ref is X2×2^μ corresponding to a valid SBFD slot (or downlink slot). CLi-RS (X2 × 2^μ DL It is the minimum value greater than or equal to ). X1 or X2 may be set as shown below. Hereafter, X1 and X2 will be collectively referred to as X.

[0083] X may be defined in the wireless communication system 10 or set by the RRC (upper layer). The value of X may differ depending on whether one L1 CLI measurement resource is set for an L1 CLI measurement / report or multiple L1 CLI measurement resources are set for an L1 CLI measurement / report (i.e., X1 ≠ X2).

[0084] μ CLi-RS μ is the reference SCS configured for the L1 CLI measurement resource. In cases where multiple L1 CLI measurement resources are configured for L1 CLI measurement / report, μ CLi-RS The following Alt options are possible.

[0085] Alt. 1-2-1 suggests that the UE may assume that the reference SCS configured for multiple L1 CLI measurement resources is the same.

[0086] Alt. 1-2-2 states that the UE sets a representative value (e.g., minimum or maximum) of the reference SCS for multiple L1 CLI measurement resources using μ CLi-RS It may be decided as such.

[0087] Furthermore, the UE may assume that the reference SCS configured for multiple L1 CLI measurement resources is the same as the SCS for DL ​​BWP.

[0088] For Aperiodic CSI reporting, n_csi,ref is defined as follows: If the UE is specified in DCI to report the CSI in the same slot as the CSI request, n_csi,ref is the reference resource in the same valid downlink slot as the CSI request. If the UE is not specified in DCI to report the CSI in the same slot as the CSI request, n_csi,ref is the smallest value greater than or equal to Floor (Z' / N^slot_symb). n_csi,ref corresponds to a valid downlink slot, and Z' is the value corresponding to the delayed request.

[0089] Z' may be one of the parameters that define the CSI computation time for CSI reporting. The parameters that define the CSI computation time may include a parameter (Z(m)) that defines the CSI computation time to be allocated after the reporting of the corresponding CSI is triggered, and a parameter (Z'(m)) that defines the CSI computation time to be allocated after the reporting of the n-th CSI is triggered. Z' may be read as Z'(m). Z(m) and Z'(m) may be considered terms defined in 3GPP TS38.214 V17.4.0 §5.4 “UE CSI computation time”. The following Alt values ​​are possible for Z(m) and Z'(m).

[0090] In Alt.1-2-A, (Z1, Z'1) may also be (Z1, Z'1) as defined in Table 5.4-1 of TS38.214 V17.4.0.

[0091] In Alt. 1-2-B, (Z1, Z'1) may also be (Z1, Z'1) as defined in Table 5.4-2 of TS38.214 V17.4.0.

[0092] In Alt. 1-2-C, (Z2, Z'2) may also be (Z2, Z'2) as defined in Table 5.4-2 of TS38.214 V17.4.0.

[0093] In Alt. 1-2-D, (Z3, Z'3) may also be (Z3, Z'3) as defined in Table 5.4-2 of TS38.214 V17.4.0.

[0094] In Alt. 1-2-E, (Z2, Z'2) may be a new (Z2, Z'2) added to Table 5.4-2 of TS38.214 V17.4.0. The new (Z2, Z'2) may include values ​​applicable to 15 / 30 / 60 / 120 kHz SCS and values ​​applicable to 120 / 480 / 960 kHz SCS.

[0095] In Alt. 1-2-F, (Z4, Z'4) may be a new (Z4, Z'4) added to Table 5.4-2 of TS38.214 V17.4.0. The new (Z4, Z'4) may include values ​​applicable to 15 / 30 / 60 / 120 / 480 / 960 kHz SCS.

[0096] Furthermore, the serving cell assumes the following slots are valid SBFD slots. For example, a valid SBFD slot may contain at least one SBFD symbol. A valid SBFD slot may contain only SBFD symbols. A valid SBFD slot is not included in the measurement gap set for the UE.

[0097] (5.2) Operation Example 2 Operation Example 2 exemplifies a measurement opportunity for SBFD as a resource for SBFD. The measurement opportunity for SBFD may be interpreted as a measurement opportunity used in a case where SBFD is assumed. The measurement opportunity for SBFD may be interpreted as a CLI measurement resource opportunity. The following options are possible for the CLI measurement resource occasion.

[0098] In Option 2-1, the CLI measurement resource occasion may be limited to only the measurement opportunities included in the SBFD symbol used in the L1 CLI report. That is, the UE200 performs the L1 CLI measurement using the measurement opportunities included in the SBFD symbol, without using the measurement opportunities included in the non-SBFD symbol. The following Alt options are possible for Option 2-1.

[0099] Alt. 2-1-1 states that the UE derives an L1-SRS-RSRP measurement or L1-CLI-RSSI measurement to calculate an L1 CLI measurement result (L1-SRS-RSRP or L1-CLI-RSSI) based on an L1 measurement resource that is not later than the CLI reference resource for SBFD and is based on the L1 measurement resource in the SBFD symbol.

[0100] Alt. 2-1-2 derives an L1-SRS-RSRP measurement or L1-CLI-RSSI measurement to calculate an L1 CLI measurement result (L1-SRS-RSRP or L1-CLI-RSSI) based on an L1 measurement resource that is not later than the CLI reference resource for SBFD and is the most recent L1 measurement resource in the SBFD symbol.

[0101] In option 2-1, whether to use Alt. 2-1-1 or Alt. 2-1-2 may be defined by the wireless communication system 10 or set by the RRC (upper layer). If set by the RRC, whether to use Alt. 2-1-1 or Alt. 2-1-2 may be set based on an existing parameter (at least one of timeRestrictionForChannelMeasurements or timeRestrictionForInterferenceMeasurements) or a new parameter (at least one of timeRestrictionForCliMeasurements, timeRestrictionForCliRssiMeasurements, or timeRestrictionForCliSrsRsrpMeasurements).

[0102] In Option 2-2, the CLI measurement resource occasion may be limited to the measurement opportunities included in the SBFD symbol or non-SBFD symbol used in the L1 CLI report. The following Alt options are possible for Option 2-2.

[0103] Alt. 2-2-1 derives an L1-SRS-RSRP measurement or L1-CLI-RSSI measurement to calculate an L1 CLI measurement result (L1-SRS-RSRP or L1-CLI-RSSI) based on an L1 measurement resource that is not later than the CLI reference resource for SBFD and is in the form of an SBFD symbol or non-SBFD symbol.

[0104] Alt. 2-2-2 derives an L1-SRS-RSRP measurement or L1-CLI-RSSI measurement to calculate an L1 CLI measurement result (L1-SRS-RSRP or L1-CLI-RSSI) based on an L1 measurement resource that is not later than the CLI reference resource for SBFD and is the most recent SBFD symbol or non-SBFD symbol.

[0105] In option 2-2, whether to use Alt. 2-2-1 or Alt. 2-2-2 may be defined by the wireless communication system 10 or set by the RRC (upper layer). If set by the RRC, whether to use Alt. 2-2-1 or Alt. 2-2-2 may be set based on an existing parameter (at least one of timeRestrictionForChannelMeasurements or timeRestrictionForInterferenceMeasurements) or a new parameter (at least one of timeRestrictionForCliMeasurements, timeRestrictionForCliRssiMeasurements, or timeRestrictionForCliSrsRsrpMeasurements).

[0106] In Option 2-3, the CLI measurement resource occasion may be limited to only the measurement opportunities included in the Non-SBFD symbol used in the L1 CLI report. That is, the UE200 performs the L1 CLI measurement using the measurement opportunities included in the Non-SBFD symbol, without using the measurement opportunities included in the SBFD symbol. The following Alt options are possible for Option 2-3.

[0107] Alt. 2-3-1 states that the UE derives an L1-SRS-RSRP measurement or L1-CLI-RSSI measurement to calculate an L1 CLI measurement result (L1-SRS-RSRP or L1-CLI-RSSI) based on an L1 measurement resource in a Non-SBFD symbol that is not later than the CLI reference resource for SBFD.

[0108] Alt. 2-3-2 derives an L1-SRS-RSRP measurement or L1-CLI-RSSI measurement to calculate an L1 CLI measurement result (L1-SRS-RSRP or L1-CLI-RSSI) based on an L1 measurement resource that is not later than the CLI reference resource for SBFD and is the most recent L1 measurement resource in the Non-SBFD symbol.

[0109] In option 2-3, whether to use Alt. 2-3-1 or Alt. 2-3-2 may be defined by the wireless communication system 10 or set by the RRC (upper layer). If set by the RRC, whether to use Alt. 2-3-1 or Alt. 2-3-2 may be set based on an existing parameter (at least one of timeRestrictionForChannelMeasurements or timeRestrictionForInterferenceMeasurements) or a new parameter (at least one of timeRestrictionForCliMeasurements, timeRestrictionForCliRssiMeasurements, or timeRestrictionForCliSrsRsrpMeasurements).

[0110] In Operation Example 2, whether to use option 2-1, option 2-2, or option 2-3 may be defined by the wireless communication system 10, set by the RRC (upper layer), or determined by whether or not SBFD operation is applied. Whether or not SBFD operation is applied may be interpreted as whether or not the position of the SBFD sub-band is set.

[0111] For example, an RRC parameter specifying either an SBFD CLI report or a non-SBFD CLI report may be used to determine whether to apply option 2-1 or option 2-3. Specifically, option 2-1 may be applied if an RRC parameter specifying an SBFD CLI report is set as the L1 CLI report configuration, and an RRC parameter specifying an SBFD symbol type is set as the L1 CLI measurement resource associated with the L1 CLI report configuration. Option 2-3 may be applied if an RRC parameter specifying a non-SBFD CLI report is set as the L1 CLI report configuration, and an RRC parameter specifying a non-SBFD symbol type is set as the L1 CLI measurement resource associated with the L1 CLI report configuration.

[0112] For example, whether to apply option 2-1 or option 2-2 may be determined by whether or not an SBFD operation is applied. Specifically, option 2-1 may be applied when an SBFD operation is applied (or when the position of the SBFD sub-band is set). Option 2-2 may be applied when an SBFD operation is not applied (or when the position of the SBFD sub-band is not set).

[0113] In example 2, with respect to the L1 CLI report, the UE does not need to anticipate that a new parameter (at least one of timeRestrictionForCliMeasurements, timeRestrictionForCliRssiMeasurements, or timeRestrictionForCliSrsRsrpMeasurements) will be set simultaneously with existing time restriction parameters (e.g., at least one of timeRestrictionForChannelMeasurements or timeRestrictionForInterferenceMeasurements).

[0114] (5.3) Operation Example 3 Operation Example 3 describes the beam (hereinafter referred to as Rx beam) used in L1 CLI measurement (L1-SRS-RSRP or L1-CLI-RSSI). The following options are possible for Operation Example 3.

[0115] In option 3-1, the Rx beam may be configured by the RRC (upper layer). For example, the QCL-D RS / TCI state may be configured for each CLI-RSSI measurement resource. The QCL-D RS / TCI state may also be configured for each SRS-RSRP measurement resource.

[0116] In option 3-2, the Rx beam may follow the specified Unified TCI state. Option 3-2 may be applied when the RRC parameter (FollowUnifiedTciState-Cli) is set for L1 CLI measurement (L1-SRS-RSRP or L1-CLI-RSSI).

[0117] In option 3-3, the Rx beam may follow the TCI state of the most recently received PDSCH / PDCCH.

[0118] In option 3-4, options 3-2 and 3-3 may be combined. A new RRC parameter (FollowUnifiedTciState-Cli) may be introduced to specify whether to apply option 3-2 or option 3-3. For example, option 3-2 may be applied if the new RRC parameter (FollowUnifiedTciState-Cli) is set, and option 3-3 may be applied if the new RRC parameter (FollowUnifiedTciState-Cli) is not set.

[0119] In option 3-5, options 3-1 and 3-2 may be combined. The following are examples of options 3-5.

[0120] In Example 3-5-1, option 3-1 may be applied if the QCL-D RS / TCI state is set for L1 CLI measurement (L1-SRS-RSRP or L1-CLI-RSSI), and option 3-2 may be applied if the QCL-D RS / TCI state is not set for L1 CLI measurement (L1-SRS-RSRP or L1-CLI-RSSI).

[0121] In Example 3-5-2, option 3-2 may be applied if a new RRC parameter (FollowUnifiedTciState-Cli) is set, and option 3-1 may be applied if no new RRC parameter (FollowUnifiedTciState-Cli) is set.

[0122] In option 3-6, options 3-1 and 3-3 may be combined. For example, option 3-1 may be applied when the QCL-D RS / TCI state is set for L1 CLI measurement (L1-SRS-RSRP or L1-CLI-RSSI), and option 3-3 may be applied when the QCL-D RS / TCI state is not set for L1 CLI measurement (L1-SRS-RSRP or L1-CLI-RSSI).

[0123] (5.4) Other options from Operation Example 1 and options from Operation Example 2 may be combined. For example, option 1-1 from Operation Example 1 and option 2-1 from Operation Example 2 may be combined, option 1-1 from Operation Example 1 and option 2-2 from Operation Example 2 may be combined, option 1-1 from Operation Example 1 and option 2-3 from Operation Example 2 may be combined, option 1-2 from Operation Example 1 and option 2-1 from Operation Example 2 may be combined, option 1-2 from Operation Example 1 and option 2-2 from Operation Example 2 may be combined, and option 1-2 from Operation Example 1 and option 2-3 from Operation Example 2 may be combined.

[0124] (6) Operation and Effects In the embodiment, the UE200 controls the L1 CLI report for UE to UE CLI using resources for SBFD. Specifically, a CSI reference resource for SBFD (Operation Example 1) and a measurement opportunity for SBFD (Operation Example 2) are clearly defined. With this configuration, when SBFD is assumed, measurements or reports related to the Layer 1 CLI report can be performed with appropriate resources.

[0125] (7) Other Embodiments Although the contents of the present invention have been described above in accordance with the embodiments, it will be obvious to those skilled in the art that the present invention is not limited to these descriptions and that various modifications and improvements are possible.

[0126] In the disclosure described above, two or more operation examples selected from operation example 1 to operation example 3 may be combined. Two or more options selected from each option in operation example 1 to each option in operation example 3 may be combined. Two or more options selected from Alt in operation example 1 to each Alt in operation example 3 may be combined.

[0127] Although not specifically mentioned in the disclosure above, the following UE capability(ies) may be defined. UE capability(ies) may be defined for each A-IoT device, for each FR (e.g., FR1, FR2, FR2-1, FR2-2, FR3), for each SCS, for each band, for each BC (Bandwidth Combination), or for each FC (Frequency Combination). UE capability(ies) may be included in the signals reported from UE200 to gNB100, or in the signals (RRC configuration) set from gNB100 to UE200. The UE capability(ies) reported from UE200 to gNB100 may be per UE200, per cell, or per TDD and FDD, respectively.

[0128] UE capability may include information indicating whether it supports at least one of Operation Example 1 to Operation Example 3. UE capability may include information indicating whether it supports at least one of each option from Operation Example 1 to Operation Example 3. UE capability may include information indicating whether it supports at least one of each Alt from Operation Example 1 to Operation Example 3.

[0129] In the disclosures above, configure, activate, update, indicate, enable, specify, and select may be interpreted as interchangeable. Similarly, link, associate, correspond, and map may be interpreted as interchangeable, and allocate, assign, monitor, and map may also be interpreted as interchangeable.

[0130] Furthermore, "specific," "dedicated," "UE specific," and "UE individual" may be interpreted interchangeably. Similarly, "common," "shared," "group-common," "UE common," and "UE shared" may be interpreted interchangeably.

[0131] The block diagrams (Figures 4 and 5) used in the description of the embodiments above show functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may be realized by combining the above one device or the above multiple devices with software.

[0132] Functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, assumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission is called a transmitting unit or transmitter. In any case, as mentioned above, the method of implementation is not particularly limited.

[0133] Furthermore, the gNB100 and UE200 (the device) described above may function as a computer that processes the wireless communication method of this disclosure. Figure 9 shows an example of the hardware configuration of the device. As shown in Figure 9, the device may be configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, and bus 1007.

[0134] In the following explanation, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware configuration of the device may include one or more of the devices shown in the diagram, or it may be configured to omit some of the devices.

[0135] Each functional block of the device (see Figures 4 and 5) is implemented by any hardware element of the computer device, or a combination of such hardware elements.

[0136] Furthermore, each function in the device is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of the reading and writing of data in the memory 1002 and storage 1003.

[0137] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may consist of a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, and so on.

[0138] Furthermore, the processor 1001 reads programs (program code), software modules, data, etc., from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. Moreover, the above-mentioned various processes may be executed by one processor 1001, or by two or more processors 1001 simultaneously or sequentially. The processor 1001 may be implemented by one or more chips. The program may also be transmitted from a network via a telecommunications line.

[0139] Memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. Memory 1002 may also be called a register, cache, main memory, etc. Memory 1002 can store a program (program code), software module, etc., that can execute a method according to one embodiment of this disclosure.

[0140] Storage 1003 is a computer-readable recording medium and may consist of at least one of the following: an optical disc such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., Compact Disc, Digital Multipurpose Disc, Blu-ray® Disc), a smart card, flash memory (e.g., a card, stick, key drive), a floppy® disk, a magnetic strip, etc. Storage 1003 may also be called an auxiliary storage device. The recording medium described above may also be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003.

[0141] The communication device 1004 is hardware (transceiver / receiver device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc.

[0142] The communication device 1004 may be configured to include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD).

[0143] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, LED lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0144] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0145] Furthermore, the device may 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), and some or all of the functional blocks may be implemented by such hardware. For example, processor 1001 may be implemented using at least one of these hardware components.

[0146] Furthermore, notification of information is not limited to the embodiments / models described herein and may be carried out by other means. For example, notification of information may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper 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. RRC signaling may also be called RRC messages, and may be, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0147] Each aspect / embodiment described herein may be applied to at least one of the following: Long Term Evolution (LTE), LTE-Advanced (LTE-A), 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) (where x is, for example, an integer or decimal), Future Radio Access (FRA), New Radio (NR), W-CDMA®, GSM®, CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth®, and other appropriate systems, as well as next-generation systems extended based thereon. Furthermore, multiple systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A with 5G).

[0148] The processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described herein may be reordered, provided they are consistent with each other. For example, the methods described herein present various step elements in an exemplary order and are not limited to that specific order.

[0149] The specific operations described in this disclosure as being performed by a base station may, in some cases, be performed by its upper node. In a network consisting of one or more network nodes having a base station, it is clear that various operations performed for communication with a terminal can be performed by the base station and at least one other network node (for example, an MME or S-GW, but not limited to these). Although the above example illustrates a case where there is one other network node besides the base station, it may also be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0150] Information and signals (such as data) can be output from a higher layer (or lower layer) to a lower layer (or higher layer). Input and output may occur via multiple network nodes.

[0151] The input and output information may be stored in a specific location (e.g., memory) or managed using a management table. The input and output information may be overwritten, updated, or appended to. Output information may be deleted. Input information may be transmitted to other devices.

[0152] The determination may be made by a value represented by one bit (0 or 1), by a boolean value (true or false), or by a numerical comparison (for example, a comparison with a predetermined value).

[0153] Each aspect / embodiment described herein may be used individually, in combination, or switched between as needed during implementation. Furthermore, notification of specific information (e.g., notification that "X is") is not limited to explicit notification, but may also be implicit (e.g., by not providing such notification).

[0154] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0155] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0156] The information, signals, etc. described in this disclosure may be represented using any of the various different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0157] In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and symbol may be a signal (signaling). Also, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, cell, frequency carrier, etc.

[0158] The terms “system” and “network” as used in this disclosure are interchangeable.

[0159] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a given value, or other corresponding information. For example, wireless resources may be indicated by an index.

[0160] The names used for the parameters described above are not restrictive in any way. Furthermore, the formulas and other expressions using these parameters may differ from those expressly disclosed in this disclosure. Since various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are not restrictive in any way.

[0161] In this disclosure, terms such as "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" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0162] A base station can house one or more (e.g., three) cells (also called sectors). If a base station houses multiple cells, the entire coverage area of ​​the base station can be divided into multiple smaller areas, each of which can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head: RRH)).

[0163] The terms "cell" or "sector" refer to a portion or all of the coverage area of ​​at least one of the base stations and base station subsystems that provide communication services in this coverage.

[0164] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform control or operation based on the information.

[0165] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0166] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or several other appropriate terms.

[0167] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, etc. The mobile body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0168] Furthermore, the term "base station" in this disclosure may be interpreted as "mobile station" (user terminal, hereinafter the same). For example, each aspect / embodiment of this disclosure may be applied to a configuration in which communication between a base station and a mobile station is replaced with communication between multiple mobile stations (which may be called, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.). In this case, the mobile station may have the functions that a base station has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, uplink channel, downlink channel, etc. may be interpreted as side channel.

[0169] Similarly, the term "mobile station" in this disclosure may be interpreted as "base station." In this case, the base station may be configured to have the functions that a mobile station has.

[0170] A wireless frame may consist of one or more frames in the time domain. Each of these frames in the time domain may be called a subframe.

[0171] A subframe may further consist of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0172] Numerology may be communication parameters applied to at least one of the transmission and reception of a signal or channel. Numerology may include, for example, 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 configuration, specific filtering processes performed by the transceiver in the frequency domain, and specific windowing processes performed by the transceiver in the time domain.

[0173] A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols). A slot may also be a time unit based on neurology.

[0174] A slot may include multiple mini-slots. Each mini-slot may consist of one or more symbols in the time domain. Mini-slots may also be called sub-slots. Mini-slots may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may be called a PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may be called a PDSCH (or PUSCH) mapping type B.

[0175] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Different names may be used for each of these terms.

[0176] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. In other words, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0177] Here, TTI refers to, for example, the smallest unit of time for scheduling in wireless communication. For example, in an LTE system, the base station schedules each user terminal to allocate wireless resources (such as the frequency bandwidth and transmission power available to each user terminal) in TTI units. However, the definition of TTI is not limited to this.

[0178] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. Note that when a TTI is given, the actual time interval (e.g., number of symbols) in which the transport block, code block, code word, etc. are mapped may be shorter than the given TTI.

[0179] Furthermore, if one slot or one mini-slot is referred to as TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit of scheduling. In addition, the number of slots (number of mini-slots) that constitute the minimum time unit of scheduling may be controlled.

[0180] A TTI with a time length of 1ms may also be called a normal TTI, long TTI, normal subframe, long subframe, slot, etc. A TTI shorter than a normal TTI may also be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, mini slot, sub slot, slot, etc.

[0181] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0182] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0183] Furthermore, the time domain of the RB may contain one or more symbols and may be the length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc., may each consist of one or more resource blocks.

[0184] One or more RBs may also be called Physical RBs (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0185] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0186] A Bandwidth Part (BWP), also known as a partial bandwidth, may represent a subset of consecutive common resource blocks (RBs) for a given neurology in a given carrier. Here, the common RBs may be identified by an index of the RBs relative to the carrier's common reference point. PRBs may be defined and numbered within a given BWP.

[0187] A BWP may include BWPs for UL (UL BWP) and BWPs for DL ​​(DL BWP). One or more BWPs may be configured within a single carrier for a UE.

[0188] At least one of the configured BWPs may be active, and the UE does not need to assume that it will send or receive a given signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0189] The structures described above, such as wireless frames, subframes, slots, minislots, and symbols, are merely illustrative. For example, the number of subframes included in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols, symbol length, and cyclic prefix (CP) length within a TTI can be varied in various ways.

[0190] The terms “connected,” “coupled,” or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as “access.” As used in this disclosure, two elements may be considered to be “connected” or “coupled” with each other using at least one of one or more wires, cables, and printed electrical connections, and, in some non-limiting and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0191] The reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot depending on the applicable standard.

[0192] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0193] In the configuration of each of the above devices, "means" may be replaced with "part," "circuit," "device," etc.

[0194] Any reference to elements using designations such as “First,” “Second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, references to the First and Second elements do not imply that only two elements may be employed therein, or that the First element must precede the Second element in any way.

[0195] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0196] In this disclosure, if articles are added through translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0197] As used in this disclosure, the terms “determining” and “determining” may encompass a wide variety of actions. “Determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, or inquiring (e.g., searching in a table, database, or other data structure), or ascertaining. “Determining” may also include receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, or accessing (e.g., accessing data in memory). Furthermore, "judgment" and "decision" can include considering something as having been "judged" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment" and "decision" can include considering something as having been "judged" or "decided" after some action. Also, "judgment (decision)" can be reinterpreted as "assuming," "expecting," or "considering."

[0198] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different."

[0199] Figure 10 shows an example of the configuration of vehicle 2001. As shown in Figure 10, vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013.

[0200] The drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.

[0201] The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel performed by the user.

[0202] The electronic control unit 2010 consists of a microprocessor 2031, memory (ROM, RAM) 2032, and communication ports (IO ports) 2033. Signals from various sensors 2021 to 2027 installed in the vehicle are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0203] Signals from various sensors 2021 to 2028 include current signals from the current sensor 2021 that senses motor current, front and rear wheel rotation speed signals obtained by the rotation 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 depression signals obtained by the accelerator pedal sensor 2029, brake pedal depression signals obtained by the brake pedal sensor 2026, shift lever operation signals obtained by the shift lever sensor 2027, and detection signals obtained by the object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0204] The Information Services Unit 2012 consists of various devices for providing various types of information, such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, television, and radio, and one or more ECUs that control these devices. The Information Services Unit 2012 uses information acquired from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of Vehicle 1.

[0205] The driver assistance system unit 2030 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps), gyro 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. The driver assistance system unit 2030 also sends and receives various information via the communication module 2013 to realize driver assistance functions or autonomous driving functions.

[0206] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 1 via its communication port. For example, the communication module 2013 sends and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2028 provided in the vehicle 2001.

[0207] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, it can send and receive various types of information to and from external devices via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station or a mobile station.

[0208] The communication module 2013 transmits current signals from current sensors input to the electronic control unit 2010 to an external device via wireless communication. The communication module 2013 also transmits, via wireless communication, other signals input to the electronic control unit 2010, including front and rear wheel rotation speed signals obtained by the rotation 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 depression signals obtained by the accelerator pedal sensor 2029, brake pedal depression signals obtained by the brake pedal sensor 2026, shift lever operation signals obtained by the shift lever sensor 2027, and detection signals obtained by the object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0209] The communication module 2013 receives various information (traffic information, signal information, distance information, etc.) transmitted from external devices and displays it on the information service unit 2012 installed in the vehicle. The communication module 2013 also stores the various information received from external devices in memory 2032, which is available to the microprocessor 2031. Based on the information stored in memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axles 2009, sensors 2021 to 2028, etc., installed in the vehicle 2001.

[0210] Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the intent and scope of the present disclosure as defined by the claims. Therefore, the descriptions in the present disclosure are illustrative and not intended to be restrictive in any way.

[0211] (Note) The disclosure described above may also be expressed as follows:

[0212] The first feature is a terminal comprising a control unit that performs physical layer measurements regarding inter-link interference between terminals, and a transmission unit that transmits a report of the physical layer measurements, wherein the control unit controls the reporting of the physical layer measurements using resources for a duplexing scheme that enables simultaneous communication of uplink and downlink signals within the time-division duplexing band.

[0213] The second feature is that, in the first feature, the control unit is a terminal that determines the reference resource for the duplexing scheme in a different way than the reference resource used in cases where the duplexing scheme is not assumed.

[0214] The third feature is that, in the first or second feature, the control unit is a terminal that performs a physical layer measurement of inter-link interference between terminals using a measurement opportunity in either a symbol to which the duplexing method is not applied or a symbol to which the duplexing method is applied.

[0215] The fourth feature is a base station comprising a receiving unit that receives reports of physical layer measurements regarding inter-link interference between terminals, and a control unit that assumes the reception of such physical layer measurement reports, wherein the control unit assumes that the terminals perform the reporting of the physical layer measurements using resources for a duplexing scheme that enables simultaneous communication of uplink and downlink signals within the time-division duplexing band.

[0216] The fifth feature is a wireless communication system comprising a terminal and a base station, wherein the terminal comprises a control unit that performs physical layer measurements regarding inter-link interference between terminals, and a transmission unit that transmits a report of the physical layer measurements, and the control unit controls the reporting of the physical layer measurements using resources for a duplexing scheme that enables simultaneous communication of uplink and downlink signals within the time-division duplex band.

[0217] The sixth feature is a wireless communication method comprising the steps of: performing a physical layer measurement regarding inter-link interference between terminals; transmitting a report of the physical layer measurement; and the control unit controlling the report of the physical layer measurement using resources for a duplexing scheme that enables simultaneous communication of uplink and downlink signals within the time-division duplexing band.

[0218] This patent application claims priority based on Japanese Patent Application No. 2024-192385, filed on 31 October 2024, and the entire contents of Japanese Patent Application No. 2024-192385 are incorporated herein by reference.

[0219] 10 Wireless communication system 20 NG-RAN 100 gNB 110 Receiver 120 Transmitter 130 Control unit 200 UE 210 Wireless signal transmission / reception unit 220 Amplifier unit 230 Modulation / demodulation unit 240 Control signal / reference signal processing unit 250 Encoding / decoding unit 260 Data transmission / reception unit 270 Control unit 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Left and right front wheels 2008 Left and right rear wheels 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Rotation speed sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driver assistance system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port

Claims

1. A terminal comprising: a control unit that performs physical layer measurements regarding inter-link interference between terminals; and a transmission unit that transmits a report of the physical layer measurements, wherein the control unit controls the reporting of the physical layer measurements using resources for a duplexing scheme that enables simultaneous communication of uplink and downlink signals within a time-division duplex band.

2. The terminal according to claim 1, wherein the control unit determines the reference resource for the duplexing scheme in a different manner than the reference resource used in cases where the duplexing scheme is not assumed.

3. The terminal according to claim 1, wherein the control unit performs a measurement of the physical layer relating to inter-link interference between the terminals using a measurement opportunity in either a symbol to which the duplexing method is not applied or a symbol to which the duplexing method is applied.

4. A base station comprising: a receiving unit that receives reports of physical layer measurements regarding inter-link interference between terminals; and a control unit that assumes that a terminal performs the reporting of the physical layer measurements using resources for a duplexing scheme capable of simultaneous communication of uplink and downlink signals within the time-division duplexing band.

5. A wireless communication system comprising a terminal and a base station, wherein the terminal comprises a control unit that performs physical layer measurements regarding inter-link interference between terminals, and a transmitting unit that transmits a report of the physical layer measurements, and the control unit controls the reporting of the physical layer measurements using resources for a duplexing scheme that enables simultaneous communication of uplink and downlink signals within a time-division duplex band.

6. A wireless communication method comprising: performing a physical layer measurement regarding inter-link interference between terminals; transmitting a report of the physical layer measurement; and the control unit controlling the report of the physical layer measurement using resources for a duplexing scheme capable of simultaneous communication of uplink and downlink signals within a time-division duplex band.

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