Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure is provided with: a reception unit that receives an instruction for switching uplink (UL) transmission using a plurality of panels; and a control unit that controls panel switching for the uplink transmission on the basis of the switching instruction, the panels before and after switching constituting an asymmetric panel with respect to each other. According to one embodiment of the present disclosure, UL transmission using a plurality of panels can be appropriately performed.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system. BACKGROUND

[0002] In a Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized for the purpose of further high-speed data rates, low latency, and so on (Non-Patent Literature 1). Further, LTE-Advanced (3GPP Rel. 10-14) has been standardized for the purpose of further large capacity, evolution, and so on of LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9).

[0003] A subsequent system of LTE (for example, also referred to as a 5th generation mobile communication system (5G), 5G+, a 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 onwards, and so on) is also under study.

[0004] PRIOR ART DOCUMENT

[0005] NON-PATENT LITERATURE

[0006] Non-Patent Literature 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] In future wireless communication systems, a UE is able to use one panel among multiple panels (or multiple beams) for uplink (UL) transmission. Further, after Rel. 18, in order to improve the throughput / reliability of UL, support of simultaneous transmission across multiple panels (STxMP) using multiple panels is being studied for one or more transmission / reception points (TRPs).

[0009] However, in UL transmission using multiple panels (e.g., simultaneous UL transmission), there can be a case where switching between panels is required. With respect to how to control the UE operation in this case, sufficient studies have not been made. In the case where the studies are insufficient, UL transmission using multiple panels cannot be properly made, and there is a concern that the system performance is reduced, etc.

[0010] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that are able to properly control UL transmission even in the case where UL transmission is made using multiple panels.

[0011] Means for solving the problem

[0012] A terminal according to one embodiment of the present disclosure includes a reception unit that receives an instruction for switching of uplink (UL) transmission using multiple panels, and a control unit that controls panel switching for the UL transmission based on the instruction for the switching, the panels before and after the switching constituting asymmetric panels to each other.

[0013] Effects of the Invention

[0014] According to one embodiment of the present disclosure, UL transmission using multiple panels can be properly made. BRIEF DESCRIPTION OF DRAWINGS

[0015] FIG. 1 is a diagram illustrating an example of the association of a precoder type and a TPMI index.

[0016] FIG. 2A and FIG. 2B is a diagram illustrating an example of single-panel UL transmission.

[0017] FIGS. 3A-3C is a diagram illustrating an example of modes 1 to 3 of simultaneous UL transmission using multiple panels.

[0018] FIGS. 4A-4C is a diagram illustrating an example of a transmission mode of PUSCH.

[0019] FIGS. 5A-5Cis a diagram illustrating another example of a transmission mode of a PUSCH.

[0020] FIG. 6 is a diagram illustrating an example of simultaneous UL transmission using multiple panels.

[0021] FIG. 7 is a diagram illustrating an example of simultaneous transmission of a PUSCH and a PUCCH.

[0022] FIG. 8 is a diagram illustrating an example of CSI reporting for group-based beam reporting for Rel. 17 NR and beyond.

[0023] FIGS. 9A-9C is a diagram illustrating an example of single-TRP single-panel transmission.

[0024] FIGS. 10A-10C is a diagram illustrating an example of multi-TRP multi-panel transmission using 2 panels.

[0025] FIG. 11 is a diagram illustrating an example of multi-TRP multi-panel transmission using 3 (all) panels.

[0026] FIG. 12 is a diagram illustrating a mode of UL transmission scheme using TDM.

[0027] FIG. 13 is a diagram illustrating a mode of UL transmission scheme using SDM.

[0028] FIG. 14 is a diagram illustrating a mode of UL transmission scheme using SFN.

[0029] FIG. 15 is a diagram illustrating an example of panel switching related to Embodiment 3-1.

[0030] FIG. 16 is a diagram illustrating an example of panel switching related to Embodiment 3-2.

[0031] FIG. 17 is a diagram illustrating a mode / combination example of a PUSCH transmission scheme indicated by a specific codepoint in an SRS resource set indicator field related to Embodiment 3-2.

[0032] FIG. 18 is a diagram illustrating a mode / combination example of a PUSCH transmission scheme indicated by a specific codepoint in an SRS resource set indicator field related to Embodiment 3-2.

[0033] FIG. 19FIG. 3 is a diagram showing an example of a mode / combination of PUSCH transmission schemes indicated by a specific codepoint within an SRS resource set indicator field according to Embodiment 3-1.

[0034] FIG. 20 FIG. 4 is a diagram showing an example of panel switching according to Embodiment 3-3.

[0035] FIG. 21 FIG. 5 is a diagram showing an example of a mode / combination of PUSCH transmission schemes indicated by a specific codepoint within an SRS resource set indicator field according to Embodiment 3-3.

[0036] FIG. 22 FIG. 6 is a diagram showing an example of a mode / combination of PUSCH transmission schemes indicated by a specific codepoint within an SRS resource set indicator field according to Embodiment 3-3.

[0037] FIGS. 23A-23B FIG. 7 is a diagram showing an example of a mode / combination of PUSCH transmission schemes indicated by a specific codepoint within an SRS resource set indicator field / SRS resource indicator field according to Embodiment 3-4.

[0038] FIGS. 24A-24B FIG. 8 is a diagram showing a mode of UL transmission schemes per CORESETPoolIndex according to the fifth embodiment.

[0039] FIG. 25 FIG. 9 is a diagram showing an example of panel switching according to Embodiment 5-1.

[0040] FIGS. 26A-26B FIG. 10 is a diagram showing an example of a mode / combination of PUSCH transmission schemes indicated by a specific codepoint within an SRS resource set indicator field according to Embodiment 5-2.

[0041] FIG. 27 FIG. 11 is a diagram showing an example of a scenario in which multiple panels are supported according to the sixth embodiment.

[0042] FIG. 28 FIG. 12 is a diagram showing another example of a scenario in which multiple panels are supported according to the sixth embodiment.

[0043] FIG. 29 FIG. 13 is a diagram showing an example of an overall configuration of a wireless communication system according to an embodiment.

[0044] FIG. 30 FIG. 14 is a diagram showing an example of a configuration of a base station according to an embodiment.

[0045] FIG. 31 FIG. 15 is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0046] FIG. 32 FIG. 1 is a diagram showing an example of a hardware structure of a base station and a user terminal according to an embodiment.

[0047] FIG. 33 FIG. 2 is a diagram showing an example of a vehicle according to an embodiment. DETAILED DESCRIPTION

[0048] (PUSCH precoder)

[0049] In NR, at least one of codebook (CB) based transmission and non-codebook (NCB) based transmission is being studied as a transmission method supported by a UE.

[0050] For example, it is being studied that a UE indicates at least a sounding reference signal (SRS) resource indicator (SRI) using a measurement reference signal resource, and determines a precoder (precoding matrix) for uplink shared channel (PUSCH) transmission for at least one of CB based transmission and NCB based transmission.

[0051] In the case of CB based transmission, a UE can also determine a precoder for PUSCH transmission based on an SRI, a transmitted rank indicator (TRI), a transmitted precoding matrix indicator (TPMI), and the like. In the case of NCB based transmission, a UE can also determine a precoder for PUSCH transmission based on an SRI.

[0052] An SRI, a TRI, a TPMI, and the like can also be notified to a UE using downlink control information (DCI). An SRI can be specified by an SRS resource indicator (SRI field) field of DCI, or by a parameter "srs-ResourceIndicator" included in an RRC information element "ConfiguredGrantConfig" of a configured grant PUSCH. A TRI and a TPMI can also be specified by a precoding information and number of layers field of DCI.

[0053] The UE can also report UE capability information (UE capability information) related to the precoder type, and the precoder type based on the UE capability information is set by higher layer signaling from the base station. The UE capability information can also be information of the precoder type used by the UE in PUSCH transmission (may also be represented by the RRC parameter "pusch-TransCoherence").

[0054] In the present disclosure, the higher layer signaling can be any one of, or a combination of, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc.

[0055] The MAC signaling can use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. The broadcast information can be, for example, a Master Information Block (MIB), a System Information Block (SIB), etc.

[0056] The UE can also determine the precoder used in PUSCH transmission based on the information of the precoder type included in the PUSCH configuration information (RRC signaling "PUSCH-Config" information element) notified by higher layer signaling (may also be represented by the RRC parameter "codebookSubset"). The UE can also be set by codebookSubset to a subset of PMI specified by TPMI.

[0057] In addition, the precoder type can also be specified by any one of, or at least a combination of 2 or more of, full coherent, partial coherent, and non coherent (non coherent), (may also be represented by the parameters "fullyAndPartialAndNonCoherent", "partialAndNonCoherent", etc.).

[0058] Full coherence can also mean that synchronization is taken for all of the antenna ports used in transmission (this can also be expressed as being able to align the phases, the same precoder being applied, etc.). Partial coherence can also mean that synchronization is taken for a part of the antenna ports used in transmission between the ports, but the part of the ports is not synchronized with the other ports. Non-coherent can also mean that synchronization is not taken for each of the antenna ports used in transmission.

[0059] In addition, a UE that supports the precoder type of full coherence can also be conceived as supporting the precoder types of partial coherence and non-coherent. A UE that supports the precoder type of partial coherence can also be conceived as supporting the precoder type of non-coherent.

[0060] The precoder type can also be rewritten as coherency, PUSCH transmission coherence, coherence type, coherence type, codebook type, codebook subset, codebook subset type, etc.

[0061] The UE can also decide the precoding matrix corresponding to the TPMI index obtained from the DCI (for example, DCI format 0_1. The same applies below) that schedules the UL transmission according to a plurality of precoding matrices (may also be referred to as precoding matrices, codebooks, etc.) used for CB-based transmission.

[0062] FIG. 1 is a diagram showing an example of the association of the precoder type and the TPMI index. FIG. 1 is a table showing the precoding matrix W used for single-layer (rank 1) transmission using 4 antenna ports in DFT-s-OFDM (Discrete Fourier Transform spread OFDM, transform precoding effective).

[0063] In FIG. 1 , in the case where the precoder type (codebookSubset) is full and partial and non-coherent (fullyAndPartialAndNonCoherent), the UE is notified of any one of TPMIs 0 to 27 for single-layer transmission. In addition, in the case where the precoder type is partial and non-coherent (partialAndNonCoherent), the UE is set any one of TPMIs 0 to 11 for single-layer transmission. In the case where the precoder type is non-coherent (nonCoherent), the UE is set any one of TPMIs 0 to 3 for single-layer transmission.

[0064] In addition, as FIG. 1As shown, the precoding matrix whose components of each column are only one that is not 0 can also be referred to as a non-coherent codebook. The precoding matrix whose components of each column are only a specific number (not all) that is not 0 can also be referred to as a partially-coherent codebook. The precoding matrix whose components of each column are all not 0 can also be referred to as a fully-coherent codebook.

[0065] The non-coherent codebook and the partially-coherent codebook can also be referred to as an antenna selection precoder. The fully-coherent codebook can also be referred to as a non-antenna selection precoder.

[0066] In addition, in the present disclosure, the partially-coherent codebook can also correspond to the codebook (precoding matrix) corresponding to the TPMI specified by the DCI for the codebook-based transmission by the UE to which the partially-coherent codebook subset (for example, the RRC parameter "codebookSubset" = "partialAndNonCoherent") is set, except for the codebook corresponding to the TPMI specified by the UE to which the non-coherent codebook subset (for example, the RRC parameter "codebookSubset" = "nonCoherent") is set (that is, if it is a single-layer transmission of 4 antenna ports, the codebook of TPMI = 4 to 11).

[0067] In addition, in the present disclosure, the fully-coherent codebook can also correspond to the codebook (precoding matrix) corresponding to the TPMI specified by the DCI for the codebook-based transmission by the UE to which the fully-coherent codebook subset (for example, the RRC parameter "codebookSubset" = "fullyAndPartialAndNonCoherent") is set, except for the codebook corresponding to the TPMI specified by the UE to which the partially-coherent codebook subset (for example, the RRC parameter "codebookSubset" = "partialAndNonCoherent") is set (that is, if it is a single-layer transmission of 4 antenna ports, the codebook of TPMI = 12 to 27).

[0068] (SRS, control of transmission of PUSCH)

[0069] In Rel. 15 NR, a terminal (user terminal, User Equipment (UE)) can also receive information (SRS configuration information, for example, parameters within "SRS-Config" of an RRC control element) used in transmission of a measurement reference signal (for example, a Sounding Reference Signal (SRS)).

[0070] Specifically, the UE can also receive at least one of information (SRS resource set information, for example, "SRS-ResourceSet" of an RRC control element) related to one or more SRS resource sets and information (SRS resource information, for example, "SRS-Resource" of an RRC control element) related to one or more SRS resources.

[0071] One SRS resource set can also be associated with (or grouped with) a specific number of SRS resources. Each SRS resource can also be identified by an SRS Resource Indicator (SRI) or an SRS resource ID (Identifier).

[0072] The SRS resource set information can also include an SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, an SRS resource type, and information on the usage of the SRS.

[0073] Here, the SRS resource type can represent any one of a periodic SRS (P-SRS), a semi-persistent SRS (SP-SRS), and an aperiodic SRS (A-SRS). In addition, the UE can periodically (or periodically after being activated) transmit the P-SRS and the SP-SRS, and transmit the A-SRS based on a DCI-based SRS request.

[0074] Further, the usage (RRC parameter's "usage", L1 (Layer-1) parameter's "SRS-SetUse") can be, for example, also beamManagement, codebook (CB), non-codebook (NCB), antenna switching, etc. SRS for codebook or non-codebook usage can also be used for the determination of the precoder for SRI-based codebook-based or non-codebook-based uplink shared channel (Physical Uplink Shared Channel (PUSCH)) transmission.

[0075] For example, the UE in case of codebook-based transmission can also determine the precoder (precoding matrix) for PUSCH transmission based on the SRI, a transmitted rank indicator (TRI), and a transmitted precoding matrix indicator (TPMI). The UE in case of non-codebook-based transmission can also determine the precoder for PUSCH transmission based on the SRI.

[0076] The SRS resource information can also contain SRS resource ID (SRS-ResourceId), SRS port number, SRS port number, transmission Comb, SRS resource mapping (e.g., time and / or frequency resource location, resource offset, period of resource, repetition number, SRS symbol number, SRS bandwidth, etc.), hopping association information, SRS resource type, sequence ID, spatial relation information of SRS, etc.

[0077] The spatial relation information of SRS (e.g., RRC information element's "spatialRelationInfo") can also indicate spatial relation information between a specific reference signal and SRS. The specific reference signal can also be at least one of a synchronization signal / physical broadcast channel (SS / PBCH) block, a channel state information reference signal (CSI-RS), and SRS (e.g., other SRS). The SS / PBCH block can also be referred to as a synchronization signal block (SSB).

[0078] The spatial relation information of the SRS can also contain at least one of an SSB index, a CSI-RS resource ID, and an SRS resource ID as an index of the above-mentioned specific reference signal.

[0079] In addition, in the present disclosure, an SSB index, an SSB resource ID, and an SSB Resource Indicator (SSBRI) can also be rewritten with each other. Furthermore, a CSI-RS index, a CSI-RS resource ID, and a CSI-RS Resource Indicator (CRI) can also be rewritten with each other. Furthermore, an SRS index, an SRS resource ID, and an SRI can also be rewritten with each other.

[0080] The spatial relation information of the SRS can also contain a serving cell index, a BWP index (BWP ID), and the like corresponding to the above-mentioned specific reference signal.

[0081] The UE can also transmit a certain SRS resource using the same spatial domain filter (spatial domain transmission filter) as that used for reception of an SSB or a CSI-RS set for the SRS resource, in the case where the SSB or the CSI-RS is set for the SRS resource and spatial relation information related to the SRS is set. In this case, the UE can also assume that the UE reception beam of the SSB or the CSI-RS is the same as the UE transmission beam of the SRS.

[0082] The UE can also transmit a certain SRS (target SRS) resource using the same spatial domain filter (spatial domain transmission filter) as that used for transmission of another SRS (reference SRS) set for the SRS (target SRS) resource, in the case where the reference SRS is set for the target SRS resource and spatial relation information related to the SRS (target SRS) is set. That is, in this case, the UE can also assume that the UE transmission beam of the reference SRS is the same as the UE transmission beam of the target SRS.

[0083] The UE can also determine the spatial relation of a PUSCH scheduled by a DCI (for example, DCI format 0_1) based on the value of a specific field (for example, an SRS resource indicator (SRI) field) within the DCI. Specifically, the UE can also use the spatial relation information (for example, “spatialRelationInfo” of an RRC information element) of an SRS resource determined based on the value (for example, SRI) of the specific field for the PUSCH transmission.

[0084] In Rel. 15 / 16 NR, for PUSCH, in case of using codebook-based transmission, the UE can also be configured by RRC with a set of SRS resources for codebook with maximum 2 SRS resources, and one of the maximum 2 SRS resources can also be indicated by DCI (1-bit SRI field). The transmission beam of PUSCH can also be specified by the SRI field.

[0085] The UE can also determine the TPMI and the number of layers (transmission rank) for PUSCH based on the precoding information and the number of layers field (hereinafter also referred to as precoding information field). The UE can also select a precoder for the codebook for uplink based on the above TPMI, the number of layers, and the like, from the same number of ports as the number of SRS ports indicated by the high layer parameter "nrofSRS-Ports" configured for the SRS resource specified by the above SRI field.

[0086] In Rel. 15 / 16 NR, for PUSCH, in case of using non-codebook-based transmission, the UE can also be configured by RRC with a set of SRS resources for non-codebook with maximum 4 SRS resources, and one or more of the maximum 4 SRS resources can also be indicated by DCI (2-bit SRI field).

[0087] The UE can also determine the number of layers (transmission rank) for PUSCH based on the above SRI field. For example, the UE can also determine that the number of SRS resources specified by the above SRI field is the same as the number of layers for PUSCH. In addition, the UE can also calculate the precoder for the above SRS resource.

[0088] In the case where the CSI-RS associated with the SRS resource (or the SRS resource set to which the SRS resource belongs) (may also be referred to as associated CSI-RS) is configured by a high layer, the transmission beam of PUSCH can also be calculated based on (measurement of) the configured associated CSI-RS. Otherwise, the transmission beam of PUSCH can also be specified by the SRI.

[0089] In addition, the UE can also be configured by a high layer parameter "txConfig" indicating the transmission scheme whether to use codebook-based PUSCH transmission or non-codebook-based PUSCH transmission. The parameter can also indicate the value of "codebook" or "nonCodebook".

[0090] In the present disclosure, codebook-based PUSCH (codebook-based PUSCH transmission, codebook-based transmission) can also mean a PUSCH in a case where a "codebook" is set to a UE as a transmission scheme. In the present disclosure, non-codebook-based PUSCH (non-codebook-based PUSCH transmission, non-codebook-based transmission) can also mean a PUSCH in a case where a "non-codebook" is set to a UE as a transmission scheme.

[0091] However, in a future wireless communication system (for example, Rel. 18 NR or later), it is envisaged to face one or more transmission / reception points (Transmission / Reception Point (TRP)), support simultaneous UL transmission using multiple beams / panels / TRPs (for example, simultaneous multi-panel UL transmission (STxMP)).

[0092] For example, in Rel. 18, simultaneous UL transmission using a maximum of 2 TRPs / 2 panels is being studied. In addition, considering single-DCI-based and multi-DCI-based multi-TRP operations, it is also envisaged to be set to a maximum of 4 layers across panels in the total number of layers, and a maximum of 2 in the total number of codewords across panels. Of course, the number of TRPs, the number of panels, the number of layers, and the number of codewords are not limited to this.

[0093] (Single-panel transmission)

[0094] The single-panel UL transmission scheme or the single-panel UL transmission scheme candidate can be applied to at least one of the following transmission schemes A, B (single-panel UL transmission schemes A, B). In the present disclosure, the panel / UE panel can also be rewritten as a UE capability value set (for example, a UE capability value set) reported per UE capability. In addition, in the present disclosure, different panels, different spatial relations, different joint TCI states, different TPC parameters, different antenna ports, and the like can be rewritten with each other.

[0095] <Transmission scheme A: single-panel single-TRP UL transmission>

[0096] In Rel. 15 and Rel. 16, a transmission scheme in which a UE transmits UL from only one beam and panel to one TRP at one point in time (single-panel single-TRP UL transmission) is used. FIG. 2A

[0097] <Transmission scheme B: single-panel multi-TRP UL transmission>

[0098] In Rel. 17, a transmission scheme in which UL transmission from only one beam and panel is performed at one point in time, and repeated transmission to multiple TRPs is performed (single-panel multi-TRP UL transmission) is being studied.​FIG. 2B ). In FIG. 2B In the example of FIG. 2, the UE transmits PUSCH from panel #1 to TRP #1 after switching the beam and the panel (switching beam and panel), and transmits PUSCH from panel #2 to TRP #2. The two TRPs are connected via an ideal backhaul.

[0099] (Multi-panel transmission)

[0100] In Rel. 18 and later, in order to improve the throughput / reliability of UL, simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (STxMP)) for more than one TRP is being studied. In addition, for a specific UL channel (e.g., PUSCH / PUCCH), etc., a multi-panel UL transmission method is being studied.

[0101] As a multi-panel UL transmission, for example, a maximum of X (e.g., X = 2) and a maximum of Y (e.g., Y = 2) panels can also be supported. In multi-panel UL transmission, in the case of supporting UL precoding indication for PUSCH, a codebook of the existing system (e.g., Rel. 16 and earlier) can also be supported for multi-panel simultaneous transmission. In the case of considering single-DCI and multi-DCI-based multi-TRP operation, the number of layers can be a maximum of x (e.g., x = 4) in the full panel, and the number of codewords (CW) can be a maximum of y (e.g., y = 2) in the full panel.

[0102] The multi-panel UL transmission method or the multi-panel UL transmission method candidate is studying at least one of the following methods 1 to 3 (multi-panel UL transmission methods 1 to 3). Only one of the transmission methods 1 to 3 can also be supported. It can also be that a plurality of methods including at least one of the transmission methods 1 to 3 are supported, and one of the plurality of transmission methods is set to the UE.

[0103] <Transmission method 1: coherent multi-panel UL transmission>

[0104] The plurality of panels can also be synchronized with each other. All layers can also be mapped to all panels. A plurality of analog beams can be indicated. The SRS resource indicator (SRI) field can also be extended. This method can also use a maximum of 4 layers for UL.

[0105] In FIG. 3AIn the example, the UE maps a codeword (CW) or a transport block (TB) to L layers (PUSCH(1, 2, ..., L)), transmitting L layers from each of the two panels. Panel #1 and panel #2 are coherent. Transmission mode 1 achieves diversity gain. The total number of layers in the two panels is 2L. With a maximum total number of layers of 4, the maximum number of layers in a single panel is 2.

[0106] <Transmission Method 2: Incoherent Multi-Panel UL Transmission of a Codeword (CW) or Transport Block (TB)>

[0107] Multiple panels can also be asynchronous. Different layers are mapped to different panels, and a CW or TB is used for PUSCH from multiple panels. The layer corresponding to a CW or TB can also be mapped to multiple panels. This transmission method can also use a maximum of 4 layers or a maximum of 8 layers for UL. When supporting a maximum of 8 layers, this transmission method can also support a CW or TB using a maximum of 8 layers.

[0108] exist FIG. 3B In the example, the UE maps one CW or one TB to k layers (PUSCH(1, 2, ..., k)) and Lk layers (PUSCH(k+1, k+2, ..., L)), transmitting k layers from panel #1 and Lk layers from panel #2. Transmission mode 2 achieves gains in multiplexing and diversity. The total number of layers in the two panels is L.

[0109] <Transmission Method 3: Incoherent Multi-Panel UL Transmission from Two CW or TB Panels>

[0110] Multiple panels can also be asynchronous. Different layers can also be mapped to different panels, and two CWs or TBs can be assigned to PUSCHs from multiple panels. A layer corresponding to one CW or TB can also be mapped to one panel. Layers corresponding to multiple CWs or TBs can also be mapped to different panels. This transmission method can also use a maximum of 4 layers or a maximum of 8 layers for UL. When supporting a maximum of 8 layers, this transmission method can also support a maximum of 4 layers per CW or TB.

[0111] exist FIG. 3C In the example, the UE maps CW#1 or TB#1 from two CWs or two TBs to k layers (PUSCH(1, 2, ..., k)), and maps CW#2 or TB#2 to Lk layers (PUSCH(k+1, k+2, ..., L)). It transmits k layers from panel #1 and Lk layers from panel #2. Transmission method 3 achieves both multiplexing and diversity gains. The total number of layers in the two panels is L.

[0112] In each of the above transmission manners, the base station can also use UL TCI or panel ID to configure or indicate panel-specific transmission for UL transmission. The UL TCI (UL TCI state) can also be based on similar signaling as the DL beam indication supported in Rel. 15. The panel ID can also be applied implicitly or explicitly to the transmission of at least one of the target RS resource or target RS resource set, PUCCH, SRS, PRACH. In the case where the panel ID is explicitly notified, the panel ID can also be configured in at least one of the target RS, target channel, reference RS (e.g., DL RS resource configuration or spatial relation information).

[0113] (Simultaneous Multi-Panel Transmission)

[0114] In one or more of the above transmission manners / modes, multi-panel UL transmission (e.g., simultaneous multi-panel transmission (Simultaneous Transmission across Multiple Panels (STxMP)) for scheduling of PUSCH based on one DCI (single-DCI) / scheduling of PUSCH based on multiple DCIs (multi-DCI) is being studied.

[0115] <STxMP based on single-DCI>

[0116] In the simultaneous multi-panel transmission (STxMP) in a multi-TRP system based on single-DCI, the following manners can also be applied to UL transmission (e.g., PUSCH).

[0117] • Space Division Multiplexing (SDM) manner: different layers / DMRS ports of one PUSCH are separately precoded and transmitted from different UE beams / panels simultaneously (refer to FIG. 4A , FIG. 4B ).

[0118] • Space Division Multiplexing repetition (SDM repetition) manner: 2 PUSCH transmission occasions with different redundancy versions (RV) of the same TB are transmitted from two different UE beams / panels simultaneously on the same time and frequency resources (refer to FIG. 4C ).

[0119] • Frequency Division Multiplexing (FDM)-A manner: different parts of the frequency domain resources of one PUSCH transmission occasion (e.g., one PUSCH transmission occasion) are transmitted from different UE beams / panels (refer to FIG. 5A ).

[0120] • FDM-B approach: 2 PUSCH transmission opportunities with same TB with same / different RVs are transmitted from different UE beams / panels on non-overlapping frequency domain resources and same time domain resources (refer to FIG. 5B ).

[0121] • SFN-based approach: all of the same layers / DMRS ports of one PUSCH are transmitted simultaneously from 2 different UE beams / panels (refer to FIG. 5C ).

[0122] In addition, in the present disclosure, the repeated transmission and the transmission can also be rewritten to each other. The transmission of multiple TBs can also mean the transmission of the same TB, or the transmission of different TBs.

[0123] [Space Division Multiplexing (SDM)]

[0124] The UE can also assume that the PUSCH repeated transmission to which SDM (Space Division Multiplexing) is applied is scheduled to the same time resource and the same frequency resource. That is, the UE can also transmit the PUSCH repeated transmission to which SDM is applied in the same time resource and the same frequency resource in the case where multiple panels with coherence are used.

[0125] FIG. 4A FIG. 1 is a diagram illustrating an example of repeated transmission to which SDM is applied in one CW. In FIG. 4A , the time and frequency resources of layers #1-2 and layers #3-4 corresponding to the PUSCH / PUCCH are the same.

[0126] FIG. 4B FIG. 2 is a diagram illustrating an example of repeated transmission to which SDM is applied in two CWs. In FIG. 4B , the time and frequency resources of CW #1 and CW #2 corresponding to the PUSCH / PUCCH are the same.

[0127] FIG. 4C FIG. 3 is a diagram illustrating an example of repeated transmission to which SDM is applied. In FIG. 4C , the time and frequency resources of repetition #1 and repetition #2 of the PUSCH / PUCCH are the same.

[0128] In addition, the PUSCH transmission (for example, the PUSCH repeated transmission) to which SDM is applied can also be a structure in which at least a part of the time and frequency resources overlap.

[0129] [Space Division Multiplexing (SDM)]

[0130] The UE can also envision repeated transmissions of PUSCH / PUCCH using Frequency Division Multiplexing (FDM) scheduled to the same time resources and different frequency resources. That is, when the UE uses multiple coherent panels, it can also repeatedly transmit FDM-enabled PUSCH / PUCCH in the same time resources and different frequency resources.

[0131] FIG. 5A This is a diagram illustrating the first example of repeated transmissions using FDM (FDM-A). FIG. 5A This illustrates an example of a single PUSCH / PUCCH being repeatedly sent for a TB / UCI.

[0132] FIG. 5B This is a diagram illustrating a second example of repeated transmissions using FDM (FDM-B). FIG. 5B This example illustrates two repeated PUSCH / PUCCH transmissions for a single TB / UCI.

[0133] FIG. 5C This is a diagram illustrating an example of repeated transmission using a single-frequency network (SFN). FIG. 5C This illustrates an example of a PUSCH / PUCCH being transmitted using different beams / panels for a TB / UCI.

[0134] like FIG. 4A , FIG. 4B As shown, for non-codebook PUSCH transmission, in the case of simultaneous multi-panel transmission based on spatial multiplexing (STxMP SDM scheme), different layer / DMRS ports of a PUSCH can be precoded separately and transmitted simultaneously from different UP panels.

[0135] Regarding simultaneous multi-panel transmission in a non-codebook-based PUSCH spatial multiplexing method, as an SRI indication, consider the following two options.

[0136] Option 1

[0137] Indicates a combination of SRIs (e.g., one SRI combination). Combinations of SRIs can also be indicated from non-codebook SRS resources spanning two panels (e.g., NCB SRS resources across two panels).

[0138] Option 2

[0139] Indicate multiple (e.g., 2) SRS combinations (e.g., two SRI combinations). The combination of SRIs can also be indicated from non-codebook SRS resources (e.g., NCB SRS resources) of one panel.

[0140] The SRI combination (SRI combination) can also contain 1 or multiple SRS resources (e.g., SRS resources for non-codebook). For example, through one SRI combination (or SRI field), the corresponding SRI / SRS resource can also be indicated separately for each panel. The combination of SRIs can also be rewritten as a set of SRIs, or an SRI group.

[0141] <Multi-DCI based STxMP>

[0142] In Rel.18, in STxMP in multi-DCI based multi-TRP system, it is envisaged to support simultaneous transmission (e.g., PUSCH+PUSCH, PUSCH+PUCCH, SRS+SRS) of UL channels / UL signals (e.g., PUSCH / PUCCH / SRS) (refer to FIG. 6 ). As an example, it is envisaged to support at least one of simultaneous transmission of multiple PUSCHs (e.g., PUSCH+PUSCH), and simultaneous transmission of PUSCH and PUCCH.

[0143] In Rel.18, the multiplexing / mapping method of UCI in the case where one PUCCH overlaps with multiple PUSCHs in the simultaneous transmission of PUSCH and PUCCH is being studied. The multiple PUSCHs can also be multiple PUSCHs (involved in STxMP) that are simultaneously transmitted.

[0144] In this case, the multiple PUSCHs can also be associated with different TRPs / panels respectively (refer to FIG. 7 ).

[0145] In the existing specification (up to Rel.17), regarding multi-DCI multi-TRP, when the RRC parameter "ackNackFeedbackMode" is set to "separate", the UE does not envisage that the dynamically scheduled PUSCH / PUCCH overlaps in the time domain with other dynamically scheduled PUSCH / PUCCH (refer to FIG. 7 ).

[0146] This is because, when the RRC parameter "ackNackFeedbackMode" is set to "separate", non-ideal backhaul between 2 TRPs is assumed, and each TRP cannot timely identify the dynamic scheduling of the other TRP.

[0147] In addition, in the present disclosure, the PUSCH / PUCCH dynamically scheduled can also mean the PUSCH / PUCCH scheduled using dynamic grant, the PUSCH / PUCCH dynamically scheduled using DCI.

[0148] In addition, the UE can simultaneously transmit 2 independent PUSCHs associated with different TRPs in the same activated BWP. The total number of layers corresponding to the 2 PUSCHs can also be specified as a maximum of X (or X or less). X can be 4, for example, or other values. The maximum number of layers of each of the 2 PUSCHs can be X / 2 (e.g., 2) or other values.

[0149] Regarding multi-DCI based STxMP, in the scheduling of the simultaneously transmitted PUSCH (e.g., STxMP PUSCH+PUSCH transmission), the SRS resource set and the CORESET pool index can also be associated based on certain rules. For example, the first SRS resource set can be associated with the first CORESET pool index (e.g., 0), and the other SRS resource set can be associated with the second CORESET pool index (e.g., 1).

[0150] The PUSCH can also be associated with the SRS resource set with the same value of the CORESET pool index. For example, the PUSCH can also be associated with the SRS resource set associated with the CORESET pool index of the CORESET corresponding to the PDCCH scheduling the PUSCH.

[0151] The interpretation method of the SRI / TPMI field in the DCI can also be different for the dynamic grant based PUSCH (e.g., DG-PUSCH) and the configured grant based PUSCH (e.g., type 2 CG-PUSCH).

[0152] In case of DG-PUSCH, the indicated SRI / TPMI field can also correspond to SRS resource set(s) that are associated to the same value of CORESET pool index of CORESET(s) where the DCI scheduling PUSCH (e.g., scheduling DCI format 0_1 / 0_2) is received. In case of Type 2 CG-PUSCH, the indicated SRI / TPMI field can also correspond to SRS resource set(s) that are associated to the same value of CORESET pool index of CORESET(s) where the activation DCI is received.

[0153] In case of Type 1 CG-PUSCH, one SRS resource set index is configured to the RRC parameter (e.g., ConfiguredGrantConfig) associated to the configured grant, and the specific RRC parameter (e.g., srs-ResourceIndicator / precodingAndNumberOfLayers) can also correspond to the SRS resource set.

[0154] Regarding multi-DCI based STxMP (e.g., PUSCH+PUSCH), considering asymmetric panels, for 2 panels / TRPs, configuring SRS resource number / SRS port (or SRS port number) / max rank (e.g., maxrank) / codebook subset / full power mode separately is also envisaged. Asymmetric panels can also mean that 2 panels have different capabilities regarding SRS port number / max rank / codebook subset, etc.

[0155] For example, in case of configuring 2 SRS resource sets for multi-DCI based STxMP (e.g., PUSCH+PUSCH), the specific parameters corresponding to the configured 2 SRS resource sets can also be configured separately. The specific parameters can be, for example, at least one of SRS resource number, max rank / maximum number of SSB index (e.g., maxRank / Lmax), codebook subset (e.g., codebooksubset), and full power mode (e.g., fullpower mode).

[0156] (Group-based beam reporting)

[0157] Future-oriented wireless communication systems (e.g., Rel. 17 and later), are investigating extensions of beam management associations with respect to multiple panels (multi-panel) of user terminals (user terminal, User Equipment (UE)) on multiple transmission / reception points (multi-Transmission / Reception Point (TRP)) and the like (e.g., beam reporting suitable for multiple TRPs, which can also be referred to as extended group-based beam reporting).

[0158] Group-based beam reporting is suitable for application to cases of multi-TRP transmission, multi-panel reception, and the like, since it is possible to report one group containing multiple (e.g., 2) CRIs / SSBRIs by one report. For example, it can be utilized in order to report the best beam of TRP1 by RSRP#1 and report the best beam of TRP2 as differential RSRP#2.

[0159] In Rel. 15 and 16, group-based beam reporting (groupBasedBeamReporting) is set so that a UE for which it is effective can report only one group containing 2 different CRIs / SSBRIs (which can also be rewritten as beam indices) for each report setting. Therefore, toward Rel. 17, it is envisaged to extend the number of groups that can be reported by group-based beam reporting.

[0160] For example, 2 resource sets for channel measurement (e.g., CMR sets) can also be set / triggered as periodic / semi-persistent / aperiodic resource types. The 2 resource sets for channel measurement (e.g., CMR sets) may, for example, be 2 CSI-SSB-resource sets / 2 NZP-CSI-RS-resource sets. The UE can also be set so that groups of a maximum of 4 CRIs / SSBRIs can be reported. In addition, the number of groups that can be reported (or the number of candidates 1 / 2 / 3 / 4) can be set by a higher layer parameter (e.g., nrofReportedGroups).

[0161] It can also be that each group has multiple (e.g., 2) CRIs / SSBRIs, and the CRI / SSBRI of each group can also be selected from 2 CSI resource sets (CSI-SSB-resource sets / NZP-CSI-RS-resource sets) for report setting (e.g., report setting) respectively. Furthermore, the 2 CRIs / SSBRIs of each group can mean that they can be simultaneously received by the UE (e.g., simultaneously received using one spatial domain reception filter).

[0162] FIG. 8is a figure showing an example of a CSI report in a case where an extended group-based beam report is performed. In FIG. 8 In the figure, a mapping order of a CSI field included in one report (e.g., nth CSI report #n) for group-based CSI / RSRP or SSBRI / RSRP reporting is shown.

[0163] A maximum X (e.g., X = 4) resource groups can also be included in the CSI report. Each group can also include a plurality (e.g., 2) of CRIs or SSBRIs. Here, as each resource group, a case where CRI or SSBRI #1 and CRI or SSBRI #2 are reported is shown.

[0164] The CSI field can also include a resource set indicator (e.g., Resource set indicator). The CSI resource set associated with the largest measured value of L1-RSRP can also be shown by the value of the resource set indicator. The CSI resource set in which CRI or SSBRI #1 of the first resource group is reported can also be indicated by the value of the resource set indicator. For example, a 1-bit resource set indicator having a value of 0 or 1 can also indicate the first or second CSI resource set, respectively, after which CRI or SSBRI #1 of the first resource group can also be reported. The remaining all resource groups (e.g., in a case where there are other resource groups to be reported) follow the same mapping order as the first resource group. For example, CRI or SSBRI #1 of the remaining all resource groups can also be reported (or selected) from the CSI resource set indicated by the resource set indicator.

[0165] That is, CRI or SSBRI #1 of each group can also be reported (or selected) from the CSI resource set indicated by the resource set indicator (e.g., Resource set indicator), and CRI or SSBRI #2 can also be reported (or selected) from another CSI resource set. In this way, in all resource groups, CRI or SSBRI #1 and CRI or SSBRI #2 can also be reported from different CSI resource sets.

[0166] In addition, RSRP corresponding to the beam index (e.g., CRI or SSBRI) of each resource group is reported. For example, RSRP of the CRI or SSBRI of a specific group is reported, and with respect to other RSRP, a difference of the RSRP of the CRI or SSBRI of the specific group can also be reported. The RSRP of the CRI or SSBRI of the specific group can also be the RSRP of CRI or SSBRI #1 of the first resource group.

[0167] The extended group-based beam reporting can also be set (or set to be valid / activated) by a specific higher layer parameter (e.g., groupBasedBeamReporting-r17). Alternatively, the extended group-based beam reporting can also be determined to be valid in a case where a higher layer parameter (e.g., nrofReportedGroups-r17) related to the number of reported groups is set.

[0168] (Analysis)

[0169] <Background 1>

[0170] In Rel. 17, as a panel-specific UE capability, the "maximum supported number of SRS antenna ports" can be reported. The maximum number of supported SRS ports can also be supported by reporting the UE capability value set index in the L1-RSRP / L1-SINR report. The "maximum supported number of SRS antenna ports" can also be mutually rewritten with the maximum number of supported SRS ports, the maximum supported number of SRS ports, etc.

[0171] Specifically, if the UE is set with a CSI-ReportConfig, the high layer parameter reportQuantity is set to cri-RSRP-Index or ssb-Index-RSRP-Index, the index of the UE capability value set indicating the maximum number of supported SRS ports can also be reported together with the group of SSBRI / CRI and L1-RSRP.

[0172] <Background 2>

[0173] In multi-TRP, repeated transmission of PUSCH using time division multiplexing (TDM) is supported. In Rel. 17, two sets of SRS resources of CB / NCB can be set. However, PUSCH transmission using two asymmetric panels of multi-TRP is not supported. In CB PUSCH, two SRS resources indicated by two SRIs should have the same number of ports. On the other hand, in NCB PUSCH, two sets of SRS resources should have the same number of SRS resources.

[0174] For example, in a case where 2 SRI are indicated, the UE must expect that the nrofSRS-Ports (number of SRS ports) of the 2 indicated SRS resources are the same. In addition, in a case where, in srs-ResourceSetToAddModList, or srs-ResourceSetToAddModListDCI-0-2, the high layer parameter usage in 2 SRS resource sets, SRS-ResourceSet, is set to nonCodebook, the UE does not expect that a different number of SRS resources are set in the 2 SRS resource sets.

[0175] <BACKGROUND 3>

[0176] As described above, in Rel. 18, in simultaneous multi-panel transmission (STxMP) in a single-DCI based multi-TRP system, UL transmission (e.g., PUSCH transmission) using SDM / SFN is supported. In this STxMP, 2 CB / NCB SRS resource sets can be set. In addition, 2 SRI fields / TPMI fields can be indicated.

[0177] However, in Rel. 18, PUSCH transmission using multi-TRP of 2 asymmetric panels having different capabilities (e.g., different number of SRS ports) is not supported. As described above, in CB PUSCH, 2 SRS resources indicated by 2 SRIs should have the same number of ports. On the other hand, in NCB PUSCH, 2 SRS resource sets should have the same number of SRS resources.

[0178] That is, in Rel. 18, it is not agreed to support the following:

[0179] • In single-DCI based STxMP, different numbers of SRS resources are set for 2 SRS resource sets for CB (in a case where full power mode 2 is not set) / NCB.

[0180] • In CB PUSCH, 2 SRS resources indicated by 2 SRIs can also have different numbers of ports, respectively.

[0181] In addition, in Rel. 18, in 2 SRS resource sets set for multi-DCI based STxMP (e.g., PUSCH+PUSCH), the maximum number of SRS resources / SRS ports for each set can also be used again using the existing specification (e.g., Rel. 17).

[0182] Here, regarding full power mode and antenna port coherence type among multiple SRS resource sets, whether 2 different settings are supported or a setting method thereof is being studied.

[0183] <BACKGROUND4>

[0184] Panel-specific parameters in UL transmission (e.g. PUSCH / SRS) can also be decided based on at least one of the following options 1~6.

[0185] (Option 1)

[0186] Panel-specific parameters / panel index / UE capability value set (index) can also be associated / assigned to SRS resource set / SRS resource. For example, panel-specific parameters in PUSCH transmission can also be decided according to SRS resource indicated by SRS resource set indicator (SRI) indicated by SRS resource set indicator corresponding to the PUSCH transmission.

[0187] (Option 2)

[0188] Panel-specific parameters / panel index / UE capability value set (index) can also be associated / assigned to joint TCI / UL TCI. For example, panel-specific parameters in UL transmission can also be decided according to joint TCI / UL TCI corresponding to the UL transmission.

[0189] (Option 3)

[0190] Panel-specific parameters / panel index / UE capability value set (index) can also be associated / assigned to resource / resource set of certain specific reference signal (e.g. SSB / CSI-RS / SRS). For example, panel-specific parameters in UL transmission can also be decided according to QCL source RS / PL RS (path loss reference signal) corresponding to the UL transmission.

[0191] (Option 4)

[0192] Panel-specific parameters can also be associated / assigned to UE capability value set (index). For example, panel-specific parameters in UL transmission can also be decided according to QCL source RS / PL RS (path loss reference signal) corresponding to the UL transmission, UE capability value set (index) reported for the reference signal in certain beam report.

[0193] (Option 5)

[0194] Panel-specific parameters / panel index / UE capability value set (index) can also be directly indicated in scheduling information (e.g. scheduling DCI of UL transmission).

[0195] (Option 6)

[0196] The panel-specific parameter / panel index / UE capability value set (index) can also be associated with the group-based beam report. For example, the panel-specific parameter / panel index / UE capability value set (index) can be associated with each beam / pair of beams of the DL group-based beam report (DL group based beam reporting) of a pair of simultaneously receivable beams and each beam / pair of beams of the UL group-based beam report (UL group based beam reporting) of a pair of simultaneously transmittable beams of Rel. 18.

[0197] In each of the above options, the panel-specific parameter can refer to at least one of the number of SRS ports / number of SRS resources / full power mode / codebook subset.

[0198] <BACKGROUND 5>

[0199] As described above, in Rel. 18, in STxMP in a multi-DCI based multi-TRP system, simultaneous transmission of UL channels / UL signals (e.g., PUSCH / PUCCH / SRS) (e.g., PUSCH+PUSCH, PUSCH+PUCCH, SRS+SRS) is supported. In this STxMP, 2 CB / NCB SRS resource sets can be set.

[0200] For example, CORESETPoolIndex#0 (=0) is associated with a CB / NCB SRS resource set having a lower ID. In addition, CORESETPoolIndex#1 (=1) is associated with a CB / NCB SRS resource set having a higher ID.

[0201] <PROBLEM 1>

[0202] However, in a certain scenario (e.g., the above-described repeated transmission applying TDM in a single-DCI based multi-TRP, STxMP applying SDM / SFN in a single-DCI based multi-TRP), there can be an asymmetric panel, i.e., there is a case where the UE has 2 panels having different capabilities. In this case, different panel-specific parameters including the number of SRS ports / number of SRS resources / rank number / full power mode / codebook subset, etc. can be associated / set with 2 SRS resource sets.

[0203] On the other hand, as another possible scenario, there can be a case where the UE has 2 or more panels, and switching of panels between the multiple panels is performed. More specifically, for example, it is assumed that the UE has 3 panels, and the 3 panels have 2, 2, and 4 ports, respectively.

[0204] In certain UL transmission, switching with 2 panels of 2 ports + 2 ports STxMP and with 2 panels of 2 ports + 4 ports STxMP is envisioned. The switching of panels is sometimes caused by the movement of the UE, or the activation / deactivation of the UE panels.

[0205] The UE operation for supporting such switching of panels is not explicitly specified.

[0206] <Problem 2>

[0207] Further, it is required to dynamically switch the UL transmission per the above-mentioned multiple (e.g., 2) panels. In this case, it is necessary to specify the specific field content of the DCI indicating the panel switching.

[0208] <Problem 3>

[0209] Furthermore, in STxMP in a multi-DCI based multi-TRP system, as described above, CORESETPoolIndex #0 (=0) is associated with the SRS resource set of CB / NCB with lower ID, and CORESETPoolIndex #1 (=1) is associated with the SRS resource set of CB / NCB with higher ID. This correspondence is fixed.

[0210] However, it is envisioned that if the UE moves, the correspondence of the TRP (CORESETPoolIndex) to the panel changes. For example, if the multiple panels are symmetric panels, at the time of panel switching, there is no problem as long as the QCL of the corresponding SRS resource set is updated.

[0211] In symmetric panels, the fixed relationship between CORESETPoolIndex and SRS resource set works. Therefore, at the time of panel switching, the base station (gNB) can update the QCL of SRS resource set #0 and apply SRS resource set #0 to panel #1.

[0212] On the other hand, in the case of asymmetric panels, if the correspondence of the TRP (CORESETPoolIndex) to the panel is changed due to the movement of the UE, the fixed relationship between CORESETPoolIndex and SRS resource set can cause a problem. For example, in the case where panel #0 has 2 ports and panel #1 has 4 ports, the case where SRS resource set #0 is set to 2 ports and SRS resource set #1 is set to 4 ports is envisioned.

[0213] For example, the problem is that, in the case where the UE moves and performs UL transmission from panel #1 to TRP #0, CORESETPoolIndex = 0 is also associated with SRS resource set #0. In general, the correspondence of CORESETPoolIndex to SRS resource set also needs to be switched.

[0214] Thus, in the asymmetric panel, since the SRS resource set #0 cannot be applied to the panel #1, the fixed relationship between the CORESET Pool Index and the SRS resource set does not work.

[0215] <Problem 4>

[0216] Further, there is a possibility that the STxMP to which 2 or more panels are applied will be further expanded in the future. In particular, in the STxMP in the multi-DCI based multi-TRP system, there is room for study on a method of supporting 2 or more panels.

[0217] As described above, in the future wireless communication system (Rel. 18 or later), in the UE, research is being conducted on UL transmission using multiple beams / panels / TRPs (for example, simultaneous multi-panel UL transmission (STxMP)).

[0218] However, the method of supporting UL transmission in which multiple panels (in particular, asymmetric panels) are applied has not been sufficiently studied.

[0219] In the case where the research is insufficient, there is a concern that the system performance will be reduced due to, for example, the fact that appropriate transmission of overlapping UL channels / signals cannot be performed, reduction in throughput, and the like.

[0220] Therefore, the inventors of the present disclosure have conceived a method of solving these problems.

[0221] Hereinafter, embodiments related to the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication method related to each embodiment can be applied individually or in combination.

[0222] (Variations and the like)

[0223] In the present disclosure, "A / B" and "at least one of A and B" can also be rewritten with each other. Further, in the present disclosure, "A / B / C" can also mean "at least one of A, B, and C".

[0224] In the present disclosure, activation, deactivation, indication (or designation), selection, configuration, update, determination, and the like can also be rewritten with each other. In the present disclosure, support, control, controllable, operation, operable, and the like can also be rewritten with each other.

[0225] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, Information Elements (IEs), configurations, and the like can be interchangeable with each other. In the present disclosure, Medium Access Control (MAC) Control Elements (CEs), update commands, activation / deactivation commands, and the like can be interchangeable with each other.

[0226] In the present disclosure, higher layer signaling can also be any one or a combination of, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (e.g., a protocol for positioning (e.g., NR Positioning Protocol A (NRPPa) / LTE Positioning Protocol (LPP)) message, and the like, messages from a core network), and the like.

[0227] In the present disclosure, MAC signaling can also use, for example, MAC Control Elements (MAC CEs), MAC Protocol Data Units (PDUs), and the like. Broadcast information can be, for example, Master Information Blocks (MIBs), System Information Blocks (SIBs), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (OSI), and the like.

[0228] In the present disclosure, physical layer signaling can also be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0229] In the present disclosure, at least one of multi-TRP, multi-TRP system, multi-TRP transmission, multi-PDSCH, channel using multi-TRP, channel using multiple TCI states / space relations, multi-TRP activated by RRC / DCI, multiple TCI states / space relations activated by RRC / DCI, single-DCI based multi-TRP, and multi-DCI based multi-TRP can be rewritten to each other. In the present disclosure, multi-DCI based multi-TRP, CORESET pool index (CORESETPoolIndex) value set to 1 for CORESET 0 can be rewritten to each other. In the present disclosure, single-DCI based multi-TRP, at least one codepoint of TCI field mapped to 2 TCI states can be rewritten to each other.

[0230] In the present disclosure, at least one of single-TRP, single-DCI, single-PDCCH, single-DCI based multi-TRP, single-TRP system, single-TRP transmission, single-PDSCH, channel using single-TRP, channel using one TCI state / space relation, multi-TRP not activated by RRC / DCI, multiple TCI states / space relations not activated by RRC / DCI, CORESET pool index (CORESETPoolIndex) value set to 1 for none of CORESETs, none of codepoints of TCI field mapped to 2 TCI states, 2 TCI states not activated on at least one TCI codepoint can be rewritten to each other.

[0231] In the present disclosure, panel, UE capability value set, TRP, SRS resource set, CORESET pool index, beam group, group of TCI states, group of spatial relations, group of reference signals, group of path loss RS, antenna, antenna port, UL transmission spatial filter, UL spatial domain filter can be rewritten to each other.

[0232] In the present disclosure, STxMP, simultaneous UL transmission using multiple panels, UL transmission (multiple UL transmissions) in at least the same time resources / time domain using multiple panels, UL transmission (multiple UL transmissions) in at least the same time resources / time domain using multiple TRPs, UL transmission (multiple UL transmissions) in at least the same time resources / time domain toward multiple TRPs, and the like can be rewritten to each other.

[0233] In the present disclosure, ignore, drop, suspend, cancel, puncture, rate match, postpone, not transmit, and the like can be rewritten to each other.

[0234] In the present disclosure, UL channel, UL signal, UL transmission can be rewritten to each other.

[0235] (Wireless communication method)

[0236] The UE can also transmit more than one UL signal / channel in at least the same time domain (e.g., the same time resources / symbols / slots / subslots) using multiple panels. The transmission can also be referred to as STxMP (operation / scheme) in the disclosure below.

[0237] The transmission of more than one UL signal / channel can also be simply referred to as UL transmission in the embodiments of the disclosure.

[0238] In the disclosure, the UL transmission, STxMP, and UL transmission using (applying) TDM / SDM / SFN can also be mutually rewritten.

[0239] In the disclosure, the asymmetric UE panels (asymmetric panels / different panels) can also mean, for example, that the maximum number of SRS ports / the maximum number of SRS resources / the maximum rank / the full power mode / the codebook subset / the coherence type, etc. have different capabilities among the multiple panels. On the other hand, the symmetric UE panels (symmetric panels / same panels) can also mean that the maximum number of SRS ports / the maximum number of SRS resources / the maximum rank / the full power mode / the codebook subset / the coherence type, etc. have the same capabilities among the multiple panels.

[0240] In the disclosure, the repeated transmission and the transmission can also be mutually rewritten.

[0241] In the disclosure, the switching of the panels can also be instructed by the DCI (scheduling / triggering DCI) that schedules / triggers the UL channel / signal.

[0242] In addition, in the following embodiments, the PUSCH transmission is mainly shown as an example of the UL transmission, but the UL transmission can also be additionally applied to the PUCCH transmission, the SRS transmission.

[0243] <First embodiment>

[0244] Regarding the above problem 1, the combination of multiple panels is described in the first embodiment.

[0245] The multi-panel UE (UE that supports / have multiple panels) can support at least one of the following cases 1 to 6.

[0246] (Case 1)

[0247] The UE can also be instructed to dynamically switch the UL transmission among multiple (e.g., 3) panels. Each panel can have a different capability from the other panels. That is, the multiple panels can be non-symmetric panels to each other.

[0248] For example, the number of SRS ports of each of the 3 panels (panels #0 to #2) can also be 1, 2, 4.

[0249] (Case 2)

[0250] The UE can also be instructed of dynamic switching of UL transmission among a plurality of (for example, 3) panels. For example, among the 3 panels, 2 panels can have the same capability, and the other panel can have a different capability from the 2 panels. That is, the 2 panels having the same capability can be symmetric panels, and the other panel can be an asymmetric panel with respect to the 2 panels.

[0251] For example, the number of SRS ports of each of the 3 panels (panels #0 to #2) can also be 2, 2, 4. That is, panels #0, #1 can be symmetric panels, and panel #2 can be an asymmetric panel.

[0252] (Case 3)

[0253] The UE can also be instructed of dynamic switching of UL transmission among a plurality of (for example, 4) panels. Each panel can also have a different capability from the other panels. That is, the plurality of panels can be asymmetric panels with respect to each other.

[0254] For example, the capability (number of SRS ports / coherence type) of each of the 4 panels (panels #0 to #3) can also be 1 port, 2-port coherent transmission, 4-port full-coherent transmission, 4-port partial-coherent transmission. Here, in panels #2 and #3, the number of SRS ports is 4, but the coherence type is different (full-coherent / partial-coherent). Thus, panels #2 and #3 have different capabilities with respect to each other, constituting asymmetric panels.

[0255] Thus, in Case 3, an example is shown in which even when the number of ports is the same among panels, asymmetric panels are constituted due to different coherence types.

[0256] (Case 4)

[0257] The UE can also be instructed of dynamic switching of UL transmission among a plurality of (for example, 4) panels. The plurality of panels can be divided into a plurality of groups, and have different capabilities per group. Each panel within the same group can also have the same capability.

[0258] (Case 4-1)

[0259] The 4 panels can also be divided into 2 groups (groups #0, #1). Case 4-1 shows an example in which 2 panels belong to one group. The 2 panels (panels #0, #1) belonging to group #0 can have the same capability. The 2 panels (panels #2, #3) belonging to group #1 can have the same capability. Here, group #0 and group #1 have different capabilities.

[0260] For example, the number of SRS ports of each of the 4 panels (panels #0~#3) can also be 2, 2, 4, 4. That is, in this example, panels #0, #1 having the same number of ports (2) are mutually symmetric panels, and panels #2, #3 having the same number of ports (4) are mutually symmetric panels. On the other hand, panels #0 / #1 (group #0) and panels #2 / #3 (group #1) are mutually asymmetric panels.

[0261] (Case 4-2)

[0262] The 4 panels can also be divided into 2 groups (groups #0, #1). Case 4-2 indicates an example in which 3 panels (panels #0~#2) belong to one group #0, and one panel #3 belongs to the other group #1. The 3 panels (panels #0~#2) belonging to group #0 can also have the same capability. Here, group #0 and group #1 have different capabilities.

[0263] For example, the number of SRS ports of each of the 4 panels (panels #0~#3) can also be 2, 2, 2, 4. That is, in this example, panels #0, #1, #2 having the same number of ports (2) are mutually symmetric panels. On the other hand, panels #0 / #1 / #2 (group #0) and panel #3 (group #1) are mutually asymmetric panels.

[0264] (Case 5)

[0265] The UE can also be instructed to switch the dynamic of UL transmission among a plurality of (for example, M) panels. The M panels can also be divided into a plurality of (for example, N) groups. Here, it can also be that N≤M. Each group can also have a mutually different capability. Each panel within the same group can also have the same capability. That is, the panels can have different capabilities among different groups and the same capability within the same group. In other words, the panels can constitute asymmetric panels among different groups and symmetric panels within the same group.

[0266] (Case 6)

[0267] The UE can also be instructed to switch the dynamic of UL transmission among a plurality of (for example, M) panels. The M panels can also all have the same capability. That is, the M panels can also constitute mutually symmetric panels.

[0268] According to the first embodiment described above, a plurality of cases in which a plurality of panels are applied can be clearly distinguished / classified.

[0269] <Second Embodiment>

[0270] Regarding the above-described problem 1, the UL transmission scheme utilizing a plurality of panels is described in the second embodiment.

[0271] The second embodiment is roughly classified into Embodiments 2-1 to 2-3. Embodiments 2-1 to 2-3 can be applied individually or in combination.

[0272] Embodiment 2-1

[0273] Embodiment 2-1 relates to PUSCH repetition using TDM.

[0274] In single-DCI-based multi-TRP, in a case where PUSCH repetition (single-DCI multi-TRP TDM PUSCH repetition) is made valid by specific higher layer signaling, the UE can also be instructed to switch dynamically between UL transmission schemes (2-1-1 to 2-1-4) shown below among M (M > 2) panels.

[0275] (2-1-1)

[0276] • Single-TRP single-panel PUSCH transmission using one panel of M panels.

[0277] The one panel can also be an arbitrary panel selected from M panels. Furthermore, not limited to one, several (multiple) panels can also be selected from M panels.

[0278] (2-1-2)

[0279] • Multi-TRP TDM PUSCH repetition using 2 panels of M panels.

[0280] Different PUSCH repetitions can also be transmitted from different panels to different TRPs. The 2 panels can also be an arbitrary pair of panels (may also be referred to as a panel group) selected from M panels. In this case, the total number of candidates of panel groups C can also be represented as C(M, 2). Here, M can represent the total number of panels, and 2 can represent the number of panels per panel group.

[0281] Furthermore, the number of selectable panel groups is not limited to 1, and 2 or more arbitrary (several) panel groups can also be selected.

[0282] In this multi-TRP TDM PUSCH repetition, dynamic switching of panel / TRP order can also be supported. For example, in multi-TRP TDM PUSCH repetition using 2 panels (panels #1, #2), the initial (first) PUSCH repetition can also be associated with panel #1 / #2.

[0283] (2-1-3)

[0284] • Multi-TRP TDM PUSCH repetition transmission using X (2 < X < M) panels out of M panels.

[0285] Different PUSCH repetitions can also be transmitted from different panels to different TRPs. The X panels can also be any panel group (may also be referred to as panel group) selected from the M panels. That is, any panel group containing X panels can also be selected from the M panels. In this case, the total number of candidates of panel groups C can also be represented by C(M, X). Here, M can also represent the total number of panels, and X can represent the number of panels per panel group.

[0286] In addition, the number of selectable panel groups is not limited to 1, and 2 or more arbitrary (several) panel groups can also be selected.

[0287] In this multi-TRP TDM PUSCH repetition transmission, dynamic switching of panel / TRP order can also be supported. For example, in multi-TRP TDM PUSCH repetition transmission using X panels (panels #1~#X), the initial (first) PUSCH repetition can also be associated with at least one of panels #1~#X.

[0288] (2-1-4)

[0289] • Multi-TRP TDM PUSCH repetition transmission using all of the M panels.

[0290] Different PUSCH repetitions can also be transmitted from different panels to different TRPs.

[0291] In this multi-TRP TDM PUSCH repetition transmission, dynamic switching of panel / TRP order can also be supported. For example, in multi-TRP TDM PUSCH repetition transmission using M panels (panels #1~#M), the initial (first) PUSCH repetition can also be associated with at least one of panels #1~#M.

[0292] According to Embodiment 2-1, in the PUSCH repetition transmission using TDM, the UL transmission scheme can be appropriately distinguished for each specific case.

[0293] Embodiment 2-2

[0294] Embodiment 2-2 relates to simultaneous multi-panel PUSCH transmission using SDM.

[0295] In single-DCI based multi-TRP, while the single-DCI multi-TRP STxMP SDM PUSCH transmission (single-DCI multi-TRP STxMP SDM PUSCH scheme) is applied, the UE can also be instructed to dynamically switch the UL transmission scheme (2-2-1~2-2-4) shown below among M (M>2) panels in the case where the single-DCI multi-TRP STxMP SDM PUSCH transmission is made effective by a specific higher layer signaling.

[0296] (2-2-1)

[0297] • Single-TRP single-panel PUSCH transmission using one panel of the M panels.

[0298] The one panel can also be an arbitrary panel selected from the M panels. In addition, not limited to one, several (multiple) panels can also be selected from the M panels.

[0299] (2-2-2)

[0300] • Single-DCI multi-TRP STxMP SDM PUSCH transmission using 2 panels of the M panels.

[0301] The different layers of a PUSCH can also be transmitted from different panels to different TRPs. The 2 panels can also be an arbitrary pair of panels (may also be referred to as a panel group) selected from the M panels. In this case, the total number of candidates C of the panel group can also be represented by C(M, 2). Here, M can also represent the total number of panels, and 2 can represent the number of panels per panel group.

[0302] In addition, the number of selectable panel groups is not limited to 1, and 2 or more arbitrary (several) panel groups can also be selected.

[0303] (2-2-3)

[0304] • Single-DCI multi-TRP STxMP SDM PUSCH transmission using X (2X

[0305] The different layers of a PUSCH can also be transmitted from different panels to different TRPs. The X panels can also be an arbitrary panel group (may also be referred to as a panel group) selected from the M panels. That is, an arbitrary panel group containing X panels can also be selected from the M panels. In this case, the total number of candidates C of the panel group can also be represented by C(M, X). Here, M can also represent the total number of panels, and X can represent the number of panels per panel group.

[0306] Further, the number of selectable panel groups is not limited to 1, and 2 or more arbitrary (several) panel groups can be selected.

[0307] (2-2-4)

[0308] • Single-DCI multi-TRP STxMP SFN PUSCH transmission using all of the M panels.

[0309] Different layers of a PUSCH can also be transmitted from different panels to different TRPs.

[0310] According to Embodiment 2-2, in the simultaneous multi-panel PUSCH transmission using SFN, the UL transmission scheme for each specific case can be appropriately distinguished.

[0311] Embodiment 2-3

[0312] Embodiment 2-3 relates to simultaneous multi-panel PUSCH transmission using SFN.

[0313] In the single-DCI multi-TRP, in the case where simultaneous multi-panel PUSCH transmission using SFN (single-DCI multi-TRP STxMP SFN PUSCH scheme) is made effective by specific higher layer signaling, the UE can also be instructed to dynamically switch the UL transmission schemes (2-3-1 to 2-3-4) shown below among the M panels (M > 2).

[0314] (2-3-1)

[0315] • Single-TRP single-panel PUSCH transmission using one panel of the M panels.

[0316] The one panel can also be an arbitrary panel selected from the M panels. Further, not limited to one, several (multiple) panels can also be selected from the M panels.

[0317] (2-3-2)

[0318] • Single-DCI multi-TRP STxMP SFN PUSCH transmission using 2 panels of the M panels.

[0319] All layers of a PUSCH can also be transmitted from the 2 panels. The 2 panels can also be an arbitrary pair of panels (may also be referred to as a panel group) selected from the M panels. In this case, the total number of candidates of the panel group C can also be represented by C(M, 2). Here, M represents the total number of panels, and 2 represents the number of panels per panel group.

[0320] Furthermore, the number of selectable panel groups is not limited to 1, and 2 or more arbitrary (several) panel groups can be selected.

[0321] (2-3-3)

[0322] • Single-DCI multi-TRP STxMP SFN PUSCH transmission using X panels (2 < X < M) of M panels.

[0323] All layers of a PUSCH can also be transmitted from X panels. The X panels can also be an arbitrary panel group (may also be referred to as a panel group) selected from M panels. That is, an arbitrary panel group including X panels can also be selected from M panels. In this case, the total number of candidates of panel groups C can also be represented by C(M, X). Here, M can also represent the total number of panels, and X can represent the number of panels per panel group.

[0324] Furthermore, the number of selectable panel groups is not limited to 1, and 2 or more arbitrary (several) panel groups can be selected.

[0325] (2-3-4)

[0326] • Single-DCI multi-TRP STxMP SFN PUSCH transmission using all of M panels.

[0327] All layers of a PUSCH can also be transmitted from M panels.

[0328] According to Embodiment 2-3, in a multi-panel PUSCH transmission using SFN, it is possible to appropriately distinguish the UL transmission scheme for each specific situation.

[0329] <Specific Examples>

[0330] Referring to FIGS. 9 to FIG. 14 Specific examples of the second embodiment will be described. In FIGS. 9 to FIG. 14 In FIGS. 9 to 12, a case in which the number of panels is 3 (i.e., M = 3) is described, but is not limited thereto. The number of panels can also be 2 or 4 or more.

[0331] <Single-TRP Single-Panel Transmission>

[0332] FIGS. 9A-9Cis a diagram illustrating an example of single-TRP single-panel transmission. FIG. 9 corresponds to the UL transmission scheme 2-1-1 / 2-2-1 / 2-3-1 described above. Further, in FIG. 9, a case where the number of ports of each of 3 panels (panels #0 to #2) is 2, 2, and 4 is described, but is not limited thereto. The number of ports of each panel can be changed as appropriate.

[0333] As illustrated in FIG. 8, the UE can also select the panel #0 from among the 3 panels and perform UL transmission to the TRP #0 from the panel #0. FIG. 9A

[0334] As illustrated in FIG. 8, the UE can also select the panel #1 from among the 3 panels and perform UL transmission to the TRP #0 from the panel #1. FIG. 9B

[0335] As illustrated in FIG. 8, the UE can also select the panel #2 from among the 3 panels and perform UL transmission to the TRP #1 from the panel #2. FIG. 9C

[0336] Further, the UE can also perform UL transmission to the TRP #1 from the panels #0 / #1. Further, the UE can also perform UL transmission to the TRP #0 from the panel #2.

[0337] “Multi-TRP multi-panel transmission using 2 panels”

[0338] FIGS. 10A-10C is a diagram illustrating an example of multi-TRP multi-panel transmission using 2 panels. FIG. 10 corresponds to the UL transmission scheme 2-1-2 / 2-2-2 / 2-3-2 described above. Further, the number of ports of each panel of FIG. 10 can be the same as that of FIG. 9.

[0339] As illustrated in FIG. 9, the UE can also select the panels #0, #1 from among the 3 panels. The UE can also perform UL transmission to the TRP #0 from the panel #0 and perform UL transmission to the TRP #1 from the panel #1. FIG. 10A

[0340] As illustrated in FIG. 9, the UE can also select the panels #0, #2 from among the 3 panels. The UE can also perform UL transmission to the TRP #0 from the panel #0 and perform UL transmission to the TRP #1 from the panel #2. FIG. 10B

[0341] As illustrated in FIG. 9, the UE can also select the panels #1, #2 from among the 3 panels. The UE can also perform UL transmission to the TRP #0 from the panel #1 and perform UL transmission to the TRP #1 from the panel #2. FIG. 10C

[0342] ​​​​​​In addition, the UE can also perform UL transmission from the panel #0 to the TRP #1. Furthermore, the UE can also perform UL transmission from the panel #2 to the TRP #0. That is, preferably, UL transmission from each panel is performed to different TRPs from each other.

[0343] "Multi-TRP multi-panel transmission using 3 (all) panels"

[0344] FIG. 11 is a diagram illustrating an example of multi-TRP multi-panel transmission using 3 (all) panels. FIG. 11 Corresponding to the above-described UL transmission scheme 2-1-3 / 2-2-3 / 2-3-3 / 2-1-4 / 2-2-4 / 2-3-4. Furthermore, the number of ports of each panel of FIG. 10 is the same as that of FIG. 9.

[0345] As FIG. 11 indicated, the UE can also select the panels #0, #1, #2 (3 / all panels) from among the 3 panels. The UE can also perform UL transmission from the panel #0 to the TRP #0, and from the panel #1 to the TRP #1, and from the panel #2 to the TRP #2.

[0346] In addition, the UE can also perform UL transmission from the panel #0 to the TRP #1 / #2. Furthermore, the UE can also perform UL transmission from the panel #1 to the TRP #0 / #2. Furthermore, the UE can also perform UL transmission from the panel #2 to the TRP #0 / #1. That is, preferably, UL transmission from each panel is performed to different TRPs from each other.

[0347] "Mode of UL transmission scheme"

[0348] Referring FIGS. 12-14 to FIG. 8, a mode of the UL transmission scheme supporting dynamic switching will be described. In FIGS. 12-14 , a case of 3 panels (panels #1 to #3) is exemplified, but the number of panels is not limited thereto but can be appropriately changed. Furthermore, in FIGS. 12-14 , the panel index (ID) is represented by #1 to #3, but the panel index can be rewritten as #0 to #2.

[0349] FIG. 12 A diagram illustrating a mode of the UL transmission scheme using TDM can also be represented. As FIG. 12 indicated, the UL transmission scheme using TDM can exemplify, for example, the following modes:

[0350] • Single-TRP single-panel transmission using one panel #1 / #2 / #3.

[0351] • Multi-TRP multi-panel TDM repetitive transmission with 2 panels #1, #2 (first repetitive transmission is associated with panel #1 / #2).

[0352] • Multi-TRP multi-panel TDM repetitive transmission with 2 panels #1, #3 (first repetitive transmission is associated with panel #1 / #3).

[0353] • Multi-TRP multi-panel TDM repetitive transmission with 2 panels #2, #3 (first repetitive transmission is associated with panel #2 / #3).

[0354] • Multi-TRP multi-panel TDM repetitive transmission with 3 panels #1~#3 (first repetitive transmission is associated with panel #1 / #2 / #3).

[0355] FIG. 12 The UL transmission schemes shown can also not all be supported, FIG. 12 A subset of the UL transmission schemes shown can also be supported.

[0356] FIG. 13 is a diagram showing modes of UL transmission schemes with SDM. As FIG. 13 shown, UL transmission schemes with SDM can exemplify, for example, the following modes:

[0357] • Single-panel transmission with 1 panel #1 / #2 / #3.

[0358] • STxMP SDM transmission with 2 panels #1, #2.

[0359] • STxMP SDM transmission with 2 panels #1, #3.

[0360] • STxMP SDM transmission with 2 panels #2, #3.

[0361] • STxMP SDM transmission with 3 panels #1~#3.

[0362] FIG. 13 The UL transmission schemes shown can also not all be supported, FIG. 13 A subset of the UL transmission schemes shown can also be supported.

[0363] FIG. 14 is a diagram showing modes of UL transmission schemes with SFN. As FIG. 14 shown, UL transmission schemes with SFN can exemplify, for example, the following modes:

[0364] • Single-panel transmission with 1 panel #1 / #2 / #3.

[0365] • STxMP SFN transmission with 2 panels #1, #2 is utilized.

[0366] • STxMP SFN transmission with 2 panels #1, #3 is utilized.

[0367] • STxMP SFN transmission with 2 panels #2, #3 is utilized.

[0368] • STxMP SFN transmission with 3 panels #1~#3 is utilized.

[0369] FIG. 14 The UL transmission schemes illustrated can not be all supported, FIG. 14 A part (subset) of the UL transmission schemes illustrated can be supported.

[0370] According to the second embodiment described above, the UL transmission schemes applied with multiple panels can be explicitly distinguished / classified.

[0371] <Third Embodiment>

[0372] Regarding the above problem 1, a switching method of the UL transmission schemes applied with multiple panels is described in the third embodiment. In the third embodiment, a dynamic switching between panels in a case where the number of panels M is larger than 2 (e.g., 3) is illustrated. The number of panels / TRPs / SRS ports described below is only an example, and can be changed as appropriate.

[0373] The third embodiment is roughly classified into embodiments 3-1~3-3. The embodiments 3-1~3-3 can be applied individually, or can be applied in combination.

[0374] <Embodiment 3-1>

[0375] One SRS resource set can apply different parameters (e.g., the number of SRS ports, other panel-specific parameters, etc.) for different panels based on a dynamic indication from the network (NW).

[0376] One SRS resource set can also semi-statically set a plurality of sets of parameters (e.g., the number of SRS ports, other panel-specific parameters, etc.) for a plurality of panels. In this case, the NW can also dynamically indicate / update the association between the SRS resource set and the panels. The UE can also apply the set of parameters updated based on the indication to one SRS resource set.

[0377] In addition, the parameters of one SRS resource can also be dynamically indicated / updated by the NW.

[0378] <Specific Example>

[0379] FIG. 15is a diagram illustrating an example of panel switching involved in Embodiment 3-1. As shown in FIG. 15 Before the panel switching, the number of SRS ports of each of the 3 panels (panels #0~#2) is 2, 2, 4. The UE performs UL transmission from panel #0 to TRP #0, and from panel #1 to TRP #1.

[0380] Here, the SRS resource set #0 is associated / configured with 2-port SRS resources (2 SRS ports) as the above-mentioned parameter. Further, the SRS resource set #0 is associated with panel #0.

[0381] Similarly, the SRS resource set #1 is associated / configured with 2-port SRS resources (2 SRS ports) as the parameter. Further, the SRS resource set #1 is associated with panel #1.

[0382] For example, the UE can also receive an indication of the panel switching (meaning from panel #1 to panel #2) from the NW. The UE can also update the number of SRS ports of the SRS resource set #1 from 2 to 4 based on the indication. Further, the UE can also apply the updated SRS resource set #1 (number of SRS ports), and update the association of the SRS resource set #1 from panel #1 to panel #2.

[0383] The UE can also perform UL transmission from panel #2 to TRP #1 after the panel switching based on the association of the updated SRS resource set #1 with panel #2.

[0384] In this way, in Embodiment 3-1 shown in FIG. 15 The following example is shown in Embodiment 3-1: at the time of panel switching, the index of the SRS resource set is maintained as it is, and the parameter corresponding to the SRS resource set is updated, and the panel associated with the SRS resource set is switched to.

[0385] <Notes>

[0386] In Embodiment 3-1, in the single-DCI multi-TRP TDM PUSCH repetitive transmission / single-DCI multi-TRP STxMP SDM PUSCH transmission / single-DCI multi-TRP STxMP SFN PUSCH transmission, in order to support 2 panels / TRPs, 2 CB / NCB SRS resource sets can also be configured.

[0387] Further, in the single-DCI multi-TRP TDM PUSCH repetitive transmission / single-DCI multi-TRP STxMP SDM PUSCH transmission / single-DCI multi-TRP STxMP SFN PUSCH transmission, in order to support X panels / TRPs greater than 2, X CB / NCB SRS resource sets can also be configured.

[0388] In the present disclosure, the single-DCI multi-TRP TDM PUSCH repetition transmission with X panels / TRPs can also mean that multiple repetitions are associated with X panels / TRPs, and different repetitions are associated with different panels / TRPs.

[0389] In the present disclosure, the single-DCI multi-TRP STxMP SDM can also mean that multiple layers of one PUSCH are associated with X panels / TRPs, and different layers are associated with different panels / TRPs.

[0390] In the present disclosure, the single-DCI multi-TRP STxMP SFN can also mean that all layers of one PUSCH are associated with X panels / TRPs.

[0391] Embodiment 3-2

[0392] In Embodiment 3-2, M sets of SRS resources of CB / NCB can also be set. Each set of SRS resources can also correspond to a certain panel. In order to indicate the dynamic switching between the above-mentioned UL transmission schemes, a SRS resource set indicator field (which can also be referred to as a field / specific field) can also be used. It can also be that the specific field is included in, for example, DCI, indicating at least one of the following options 1 to 4. The following options 1 to 4 can also mean that the association of PUSCH transmission and a certain set of SRS resources is indicated.

[0393] In the present disclosure, "PUSCH transmission is associated with a certain set of SRS resources" and "a certain set of SRS resources / SRS resource is selected" can be rewritten to each other.

[0394] Option 1

[0395] The PUSCH transmission can also be associated with one set of SRS resources selected from the M sets of SRS resources. The selected one set of SRS resources can be any set of SRS resources from the M sets of SRS resources. In addition, the selected set of SRS resources is not limited to one, and can also be several sets of SRS resources.

[0396] Option 2

[0397] The PUSCH transmission can also be associated with two sets of SRS resources selected from the M sets of SRS resources. The two sets of SRS resources can also be a pair of any sets of SRS resources selected from the M sets of SRS resources (which can also be referred to as a set of SRS resources). In this case, the total number of candidates C of the set of SRS resources can also be represented by C(M, 2). Here, M can represent the total number of sets of SRS resources, and 2 can represent the number of sets of SRS resources per set of SRS resources.

[0398] In addition, the number of selectable SRS resource clusters is not limited to 1, and any (several) SRS resource clusters of 2 or more can be selected.

[0399] In addition, in the multi-TRP TDM PUSCH repetitive transmission, the SRS resource set indicator field can also indicate which SRS resource set is associated with the first repetitive transmission.

[0400] Option 3

[0401] The PUSCH transmission can also be associated with X (2

[0402] In addition, the number of selectable SRS resource clusters is not limited to 1, and any (several) SRS resource clusters of 2 or more can be selected.

[0403] In addition, in the multi-TRP TDM PUSCH repetitive transmission, the SRS resource set indicator field can also indicate which SRS resource set is associated with the first repetitive transmission.

[0404] Option 4

[0405] The PUSCH transmission can also be associated with all M SRS resource sets.

[0406] In addition, in the multi-TRP TDM PUSCH repetitive transmission, the SRS resource set indicator field can also indicate which SRS resource set is associated with the first repetitive transmission.

[0407] Variation

[0408] The selection of the above-mentioned SRS resource set can also be set / indicated by high-layer signaling (such as RRC / MAC CE). Specifically, first, L CB / NCB SRS resource sets are set by RRC, and M SRS resource sets are indicated / selected from the L SRS resource sets by MAC CE. Here, M can be an integer of 2 or more, and L can be an integer of M or more. In this way, the number of selected SRS resource sets (SRS resources) is gradually reduced by high-layer signaling, so that the UE can appropriately select the SRS resource set (SRS resource), and further reduce the processing load of the UE / NW.

[0409] Specific example

[0410] FIG. 16 is a diagram illustrating an example of panel switching involved in Embodiment 3-2. As shown in FIG. 16 , before the panel switching, the number of SRS ports of each of the 3 panels (panels #0~#2) is 2, 2, 4. The UE can also perform UL transmission from panel #0 to TRP #0, and from panel #1 to TRP #1.

[0411] Here, the SRS resource set #0 can also be associated / configured with 2-port SRS resources (2 SRS ports) as the above-mentioned parameter. Further, the SRS resource set #0 is associated with panel #0.

[0412] Similarly, the SRS resource set #1 can also be associated / configured with 2-port SRS resources (2 SRS ports) as the parameter. Further, the SRS resource set #1 is associated with panel #1.

[0413] For example, the UE can also receive an indication of panel switching (meaning switching from panel #1 to panel #2) from the NW. The UE can also switch the SRS resource set from SRS resource set #1 to SRS resource set #2 based on the indication. Here, the SRS resource set #2 can also be associated with panel #2.

[0414] The UE can also perform UL transmission from panel #2 to TRP #1 after the panel switching based on the association of the switched SRS resource set #2 with panel #2.

[0415] In this way, in Embodiment 3-2 shown in FIG. 16 , an example is shown in which the SRS resource set #1 corresponding to panel #1 before switching is switched to the SRS resource set #2 corresponding to the panel #2 as the target of switching, thereby realizing panel switching.

[0416] FIGS. 17-19 is a diagram illustrating a mode / combination example of the PUSCH transmission scheme indicated by a specific codepoint within the SRS resource set indicator field involved in Embodiment 3-2. In addition, FIGS. 17-19 The correspondence (combination) of the codepoint shown in FIGS. 17-19 may also be changed (may also be rearranged). Further, the 1st / 2nd / 3rd / 4th (first / second / third / fourth) of the SRS resource set can also be rearranged based on the order of the SRS resource set. Further,

[0417] FIG. 17An example of at least one of 3 SRS resource sets (1st / 2nd / 3rd) being associated with a PUSCH transmission. A specific codepoint can also indicate the association of a specific PUSCH transmission with SRS resource sets using a 3-bit field value.

[0418] For example, codepoints 000 / 001 / 010 can also indicate that a PUSCH transmission is associated with one of 3 SRS resource sets. Codepoints 011 / 100 / 101 / 110 can also indicate that a PUSCH transmission is associated with 2 of 3 SRS resource sets. The remaining codepoint 111 can also be reserved.

[0419] FIG. 18 An example of at least one of 4 SRS resource sets (1st / 2nd / 3rd / 4th) being associated with a PUSCH transmission. A specific codepoint can also indicate the association of a specific PUSCH transmission with SRS resource sets using a value of 0~15.

[0420] For example, codepoints 0~3 can also indicate that a PUSCH transmission is associated with one of 4 SRS resource sets. Codepoints 4~9 can also indicate that a PUSCH transmission is associated with 2 of 4 SRS resource sets. Codepoints 10~13 can also indicate that a PUSCH transmission is associated with 3 of 4 SRS resource sets. Codepoint 14 can also indicate that a PUSCH transmission is associated with 4 SRS resource sets. The remaining codepoint 15 can also be reserved.

[0421] FIG. 19 An example of at least one of 3 SRS resource sets (1st / 2nd / 3rd) being associated with a PUSCH transmission (e.g., a PUSCH repetition transmission utilizing TDM). A specific codepoint can also indicate the association of a specific PUSCH transmission with SRS resource sets using a value of 0~15.

[0422] For example, codepoints 0~2 can also indicate that a PUSCH transmission is associated with one of 3 SRS resource sets. Codepoints 3~8 can also indicate that a PUSCH transmission is associated with 2 of 3 SRS resource sets, with a first repetition transmission being associated with one of the 2. Codepoints 9~11 can also indicate that a PUSCH transmission scheme is associated with 3 SRS resource sets, with a first repetition transmission being associated with one of the 3. The remaining codepoints 12~15 can also be reserved.

[0423] Embodiment 3-3

[0424] Embodiment 3-3 can also be applied only to PUSCH of CB, and can not be applied to PUSCH of NCB.

[0425] In Embodiment 3-3, a case where M panels are divided into N groups (N can also be below M) is assumed. The panels within the same group can also have the same capability. That is, the panels belonging to the same group can also constitute symmetric panels with each other. Further, the different groups can also have different capabilities from each other. That is, the panels across the groups can also constitute asymmetric panels with each other.

[0426] Further, N sets of SRS resources of CB / NCB corresponding to the number of divided groups can also be set. Each set of SRS resources can also correspond to a group of panels (panel group) having the same capability. That is, the above-described group and the group of panels can also be rewritten with each other.

[0427] As described above, the SRS resource set indicator field (may also be referred to as a field / specific field) can also be used to indicate dynamic switching between UL transmission schemes. The SRS resource set indicator field can also be included in the DCI, for example, and can indicate at least one of the following options 1 to 6. The following options 1 to 6 can also mean that the association of the PUSCH transmission and a certain SRS resource set (SRS resource) is indicated.

[0428] In the present disclosure, "the PUSCH transmission is associated with a certain SRS resource set" and "a certain SRS resource set / SRS resource is selected" can also be rewritten with each other.

[0429]

[0430] The PUSCH transmission can also be associated with one SRS resource included in one SRS resource set selected from N SRS resource sets. The one SRS resource can also be arbitrarily selected from the selected one SRS resource set. Option 1 (the PUSCH transmission is associated with one SRS resource included in one SRS resource set) can also mean single-panel transmission.

[0431]

[0432] The PUSCH transmission can also be associated with two SRS resources included in one SRS resource set selected from N SRS resource sets. In this case, the two SRS resources can be selected from the same (one) SRS resource set, and thus can also have the same capability. That is, option 2 (the PUSCH transmission is associated with two SRS resources included in one SRS resource set) can also mean multi-panel transmission using two panels (symmetric panels) having the same capability.

[0433]

[0434] ​​​The PUSCH transmission can also be associated with X (X is larger than 2) SRS resource sets included in one SRS resource set selected from the N SRS resource sets. In this case, the X SRS resources can also have the same capability since they can be selected from the same (one) SRS resource set. That is, Option 3 (the PUSCH transmission is associated with X SRS resources included in one SRS resource set) can also mean a multi-panel transmission with X panels (symmetric panels) having the same capability.

[0435] Option 4

[0436] The PUSCH transmission can also be associated with 2 SRS resource sets selected from the N SRS resource sets. In this case, the 2 SRS resource sets can also have different capabilities from each other. That is, Option 4 (the PUSCH transmission is associated with 2 SRS resource sets) can also mean a multi-panel transmission with 2 panels (asymmetric panels) having different capabilities.

[0437] Option 5

[0438] The PUSCH transmission can also be associated with X (2 < X < N) SRS resource sets selected from the N SRS resource sets. In this case, the X SRS resource sets can also have different capabilities from each other. That is, Option 5 (the PUSCH transmission is associated with X SRS resource sets) can also mean a multi-panel transmission with X (more than 2) panels (asymmetric panels) having different capabilities.

[0439] Option 6

[0440] The PUSCH transmission can also be associated with all of the N SRS resource sets. In this case, the N SRS resource sets can also have different capabilities from each other. That is, Option 6 (the PUSCH transmission is associated with all of the N SRS resource sets) can also mean a multi-panel transmission with N panels (asymmetric panels) having different capabilities.

[0441] Modified Example

[0442] The selection of the SRS resource set / SRS resource described above can also be configured / indicated by higher layer signaling (e.g., RRC / MAC CE). Specifically, it can also be that, first, L sets of SRS resources of CB / NCB are configured by RRC, and N sets of SRS resources are indicated / selected from the L sets of SRS resources by MAC CE. Further, X SRS resources can also be configured / indicated from the N sets of SRS resources by higher layer signaling / physical layer signaling (e.g., DCI). In this way, the number of selected SRS resource sets (SRS resources) is gradually reduced by higher layer signaling / physical layer signaling, so that the UE can appropriately select the SRS resource set (SRS resource), and further, the processing load of the UE / NW can be reduced.

[0443]

[0444] FIG. 20 is a diagram illustrating an example of panel switching related to Embodiment 3-3. As shown in FIG. 20 , before the panel switching, the number of SRS ports of each of the 3 panels (panels #0 to #2) is 2, 2, and 4. The UE performs UL transmission from panel #0 to TRP #0 and from panel #1 to TRP #1.

[0445] Here, the SRS resource set #0 is associated with / contains 2 SRS resources (SRS resources #0, #1) having 2 ports (having 2 SRS ports). The SRS resource #0 is associated with panel #0, and the SRS resource #1 is associated with panel #1. In this case, the panels #0 and #1 can also belong to the same panel group. That is, the panels #0 and #1 can also constitute symmetric panels having the same capability.

[0446] For example, the UE can also receive an indication of panel switching (meaning switching from panel #1 to panel #2) from the NW. The UE can also switch the SRS resource set / SRS resource based on the indication.

[0447] Specifically, the SRS resource set #0 can also be associated with / contain only one SRS resource having 2 ports. This SRS resource (SRS resource set #0) can also be associated with panel #0. In addition, the SRS resource set #1 can also be associated with / contain only one SRS resource having 4 ports. This SRS resource (SRS resource set #1) can also be associated with panel #2. Here, the panels #0 and #2 can also constitute asymmetric panels having different capabilities.

[0448] The UE can also perform UL transmission from panel #2 to TRP #1 after the panel switching based on the association of the switched SRS resource set #1 with panel #2.

[0449] In this way, after the panel switching, the UE can perform UL transmission from panel #2 to TRP #1. FIG. 20 ​In the illustrated embodiment 3-3, an example of panel switching is shown in which the SRS resource set #0 (SRS resource #1 of 2 ports) corresponding to the panel #1 before switching is switched to the SRS resource set #2 (SRS resource of 4 ports) corresponding to the panel #2 as a switching target, thereby realizing panel switching.

[0450] FIG. 21 and FIG. 22 are diagrams showing mode / combination examples of the PUSCH transmission scheme indicated by a specific codepoint within the SRS resource set indicator field involved in Embodiment 3-3. In addition, FIG. 21 and FIG. 22 The correspondence (combination) of the codepoint and the UL transmission scheme illustrated in the above can also be changed (may also be rearranged). Furthermore, the 1st / 2nd (first / second) of the SRS resource set can also be rearranged based on the order of the SRS resource set. Furthermore, FIG. 21 and FIG. 22 The specific PUSCH (UL) transmission scheme illustrated in the above can also not be supported in its entirety, and each diagram can only be supported in part.

[0451] FIG. 21 An example in which the number of panels is 3 and at least one of 2 SRS resource sets (1st / 2nd) is associated with PUSCH transmission is shown. The first SRS resource set can also be associated with 2 panels, and the second resource set can also be associated with another panel. A specific codepoint can also indicate the association of a specific PUSCH transmission and an SRS resource set by a 2-bit field value.

[0452] For example, the codepoints 00 / 01 can indicate that the PUSCH transmission is associated with one SRS resource selected from the first / second SRS resource set. The codepoint 10 can indicate that the PUSCH transmission is associated with 2 SRS resources selected from the first SRS resource set. The codepoint 11 can indicate association with the first and second SRS resource sets.

[0453] FIG. 22 An example in which the number of panels is 4 and at least one of 2 SRS resource sets (1st / 2nd) is associated with PUSCH transmission is shown. The first SRS resource set can also be associated with 2 panels, and the second resource set can also be associated with the other 2 panels. A specific codepoint can also indicate the association of a specific PUSCH transmission and an SRS resource set by a 3-bit field value.

[0454] For example, codepoint 000 / 001 can also indicate that the PUSCH transmission is associated with one SRS resource selected from the first / second SRS resource set. Codepoint 010 / 011 can also indicate that the PUSCH transmission is associated with 2 SRS resources selected from the first / second SRS resource set. Codepoint 101 can also indicate association with both the first and second SRS resource set. The remaining codepoint 110 / 111 can also be reserved.

[0455] As shown in FIG. 21 and FIG. 22 The number of bits for panel switching indication (of the SRS resource set indicator field) can also be increased / decreased according to the number of panels / SRS resource sets, etc.

[0456] Embodiment 3-4

[0457] Embodiment 3-4 can also be applied only to PUSCH of CB, and can not be applied to PUSCH of NCB.

[0458] In Embodiment 3-4, a case where M panels are divided into N groups (N can also be M or less) is assumed. Panels within the same group can also have the same capability. That is, panels belonging to the same group can also constitute symmetric panels with each other. In addition, different groups can also have different capabilities from each other. That is, panels across groups can also constitute asymmetric panels with each other.

[0459] In addition, N SRS resource sets of CB / NCB corresponding to the number of divided groups can also be set. Each SRS resource set can also correspond to a panel group (panel group) having the same capability. That is, the above-mentioned group and panel group can also be rewritten with each other.

[0460] As described above, the SRS resource set indicator field (may also be referred to as a field / a specific field) can also be used to indicate dynamic switching between UL transmission schemes. The SRS resource set indicator field may, for example, be included in the DCI, and can indicate at least one of the following options 1 to 4. The following options 1 to 4 can also mean that the association of the PUSCH transmission with a certain SRS resource set (SRS resource) is indicated.

[0461] In the present disclosure, "the PUSCH transmission is associated with a certain SRS resource set" and "a certain SRS resource set / SRS resource is selected" can also be rewritten with each other.

[0462] Option 1

[0463] The PUSCH transmission can also be associated with one SRS resource set selected from N SRS resource sets. In this case, the SRI (SRS resource indicator) can indicate at least one of the following options 1-1 to 1-3.

[0464] <Option 1-1>

[0465] The PUSCH transmission can also be associated with one SRS resource selected from one SRS resource set. Option 1-1 (PUSCH transmission is associated with one SRS resource included in one SRS resource set) can also mean single-panel transmission.

[0466] <Option 1-2>

[0467] The PUSCH transmission can also be associated with two SRS resources selected from one SRS resource set. Option 1-2 (PUSCH transmission is associated with two SRS resources included in one SRS resource set) can also mean multi-panel transmission with two panels having the same capability (symmetric panels).

[0468] <Option 1-3>

[0469] The PUSCH transmission can also be associated with X (X is greater than 2) SRS resources selected from one SRS resource set. Option 1-3 (PUSCH transmission is associated with X SRS resources included in one SRS resource set) can also mean multi-panel transmission with X panels having the same capability (symmetric panels).

[0470] <Option 2>

[0471] The PUSCH transmission can also be associated with two SRS resource sets selected from N SRS resource sets. Option 2 (PUSCH transmission is associated with two SRS resource sets) can also mean multi-panel transmission with two panels having different capabilities (asymmetric panels).

[0472] <Option 3>

[0473] The PUSCH transmission can also be associated with X (2 < X < N) SRS resource sets selected from N SRS resource sets. Option 3 (PUSCH transmission is associated with X SRS resource sets) can also mean multi-panel transmission with X (more than two) panels having different capabilities (asymmetric panels).

[0474] <Option 4>

[0475] The PUSCH transmission can also be associated with all N SRS resource sets. In this case, the N SRS resource sets can also have mutually different capabilities. That is, Option 6 (PUSCH transmission is associated with all N SRS resource sets) can also mean multi-panel transmission with N panels having different capabilities (asymmetric panels).

[0476] <Modified Example>

[0477] The selection of the SRS resource set / SRS resource described above can also be configured / indicated by higher layer signaling (e.g., RRC / MAC CE). Specifically, it can also be that, first, L SRS resource sets of CB / NCB are configured by RRC, and N SRS resource sets are indicated / selected from the L SRS resource sets by MAC CE. Further, X SRS resources can also be configured / indicated from the N SRS resource sets by higher layer signaling / physical layer signaling (e.g., DCI). In this way, the number of SRS resource sets (SRS resources) selected is gradually reduced by higher layer signaling / physical layer signaling, so that the UE can appropriately select the SRS resource set (SRS resource), and further, the processing load of the UE / NW can be reduced.

[0478]

[0479] FIGS. 23A-23B is a diagram showing a pattern / combination example of the PUSCH transmission scheme indicated by a specific codepoint in the SRS resource set indicator field / SRS resource indicator field involved in Embodiment 3-4. In addition, FIGS. 23A-23B The correspondence (combination) of the codepoint shown and the UL transmission scheme can also be changed (may also be rearranged). Furthermore, the 1st / 2nd of the SRS resource set can also be rearranged based on the order of the SRS resource set. Furthermore, FIGS. 23A-23B The specific PUSCH (UL) transmission scheme shown can not be supported in its entirety, and only a part of each diagram can be supported.

[0480] FIGS. 23A-23B shows an example of at least one of the first / second SRS resource set (1 st (First) / 2 nd (Second) being associated with the PUSCH transmission. FIG. 23A Corresponding to the SRS resource set indicator field, FIG. 23B Corresponding to the SRS resource indicator field (SRI field). The first SRS resource set can be associated with 2 panels, and the second resource set can be associated with another panel. A specific codepoint can also indicate the association of a specific PUSCH transmission and an SRS resource set by a 2-bit field value.

[0481] In FIG. 23A , for example, the codepoints 00 / 01 can indicate that the PUSCH transmission is associated with the first / second SRS resource set. The codepoint 10 can indicate that the PUSCH transmission is associated with the first and second SRS resource sets. The remaining codepoint 11 can be reserved (Reserved).

[0482] In FIG. 23B ​In the middle, for example, codepoint 00 / 01 can also indicate that the PUSCH transmission is associated with the first / second SRS resource selected from the first SRS resource set. Codepoint 10 can also indicate that the PUSCH transmission is associated with 2 (first and second) SRS resources selected from the first SRS resource set. The remaining codepoint 11 can also be reserved (Reserved).

[0483] According to the third embodiment described above, the UE can implement panel switching corresponding to a plurality of situations in which a plurality of panels are applied.

[0484] It can be clearly distinguished / classified.

[0485] <Fourth Embodiment>

[0486] Regarding the above-described problem 2, the DCI field (SRI field / TPMI field) for dynamic indication of panel switching is described in the fourth embodiment.

[0487] In the repeated transmission applying TDM in single-DCI-based multi-TRP, STxMP applying SDM / SFN in single-DCI-based multi-TRP, dynamic switching between UL transmission using X (X is 2 or more) panels / TRPs and UL transmission using a single panel / TRP can also be supported. For example, UL transmission based on X panels / TRPs can also be indicated by the SRI field / TPMI field included in the DCI (scheduling the UL transmission). Specifically, the situations that can be supported can be listed, for example, as follows.

[0488] <Case 1>

[0489] In the case where UL transmission based on X panels / TRPs is indicated, and the SRI field / TPMI field is indicated in the DCI, each field can also be associated with one SRS resource set / SRI resource.

[0490] <Case 2>

[0491] In the case where UL transmission based on Y (1<YX: X is greater than 2) panels / TRPs is indicated, it can be further divided into the following choices 1 to 3.

[0492] (Choice 1)

[0493] The DCI can also have, for example, X SRI fields / TPMI fields corresponding to the maximum number of panels. Y (for example, the first Y) of the X SRI fields / TPMI fields can also be applied. In this case, each field can also be associated with one SRS resource set / SRI resource. In addition, the remaining fields can be reserved (reserved fields).

[0494] (Option 2)

[0495] The DCI can also have Y SRI fields / TPMI fields. The Y SRI fields / TPMI fields can be selected from the X SRI fields / TPMI fields. In this case, each field can also be associated with one SRS resource set / SRI resource.

[0496] (Option 3)

[0497] The DCI can also have X SRI fields / TPMI fields corresponding to the maximum number of panels. Some of the X SRI fields / TPMI fields can also be jointly interpreted / concatenated. Thereby, the X fields can also be reinterpreted as Y fields. Each field can also be associated with one SRS resource set / SRI resource.

[0498] (Case 3)

[0499] In the case where the single-panel / TRP based UL transmission is indicated, it can be further divided into the following options 1~3.

[0500] (Option 1)

[0501] The DCI can also have X SRI fields / TPMI fields corresponding to the maximum number of panels. One (e.g., the first one) of the X SRI fields / TPMI fields can also be applied. In this case, each field can also be associated with one SRS resource set / SRI resource. In addition, the remaining fields can also be reserved (reserved fields).

[0502] (Option 2)

[0503] The DCI can also have one SRI field / TPMI field. The one SRI field / TPMI field can also be arbitrarily selected (e.g., it can also be the first field) from the X SRI fields / TPMI fields. In this case, the one field can also be associated with one SRS resource set / SRI resource.

[0504] (Option 3)

[0505] The DCI can also have, for example, X SRI fields / TPMI fields corresponding to the maximum number of panels. All / some of the X SRI fields / TPMI fields can also be jointly interpreted / concatenated. Thereby, the X fields can also be reinterpreted as one field. The one field can also be associated with one SRS resource set / SRI resource.

[0506]

[0507] Further, a certain SRI field / TPMI field can also be associated with different parameters (panel-specific) by dynamic indication of the DCI. For example, there can be a case where a certain SRI field / TPMI field is associated with different parameters (panel-specific) by dynamic indication of the DCI, or a case where a certain SRI field / TPMI field is associated with the same SRS resource set / SRI resource but the SRS resource set / SRI resource can apply different parameters (panel-specific) by dynamic indication of the DCI. In the case of these cases, the size of a certain SRI field / TPMI field can also be decided as the maximum size required by different SRS resource sets / SRI resources or different parameters (panel-specific).

[0508] Here, the maximum size can also mean the maximum size that realizes all possible combinations of SRS ports across multiple panels / TRPs. For example, the UE assumes a case where there are 4 panels and the number of ports of each panel is 2, 2, 4, and 4. In this case, in the case of using 2 panels, the total number of ports becomes the combination of the maximum 2 panels, which is 4+4=8 ports. Thus, the size of the SRI field / TPMI field in this case can also be decided based on 4+4=8 ports.

[0509] Further, in this case, a part of the (first / second) SRI field / TPMI field can not be used in the case where the UE is dynamically instructed 2 panels corresponding to 2+2=4 ports.

[0510] In this way, in the case where the panel switches between 4+4=8 ports / 2+2=4 ports, a case where the size of the first / second SRI field / TPMI field is assumed to be affected (field size is different / changes) according to the total number of ports of multiple panels. In the case where the size of the field required according to the instructed panel is different, in order to identify the size of the field, the UE needs more blind detection.

[0511] ​In the present disclosure, it is assumed that the size of the field corresponding to the maximum number of ports obtained by the combination of the plurality of panels is decided (the maximum size is adopted), thereby reducing the UE complexity without unnecessary blind detection and reducing the DCI overhead.

[0512] Further, as described above, in the present disclosure, the panel-specific parameters can refer to at least one of the SRS port number / SRS resource number / full power mode / codebook subset.

[0513] As described in the above cases 1 to 3, in the case where the aggregated port number, the size of the SRI field / TPMI field differs depending on the combination of the plurality of panels, the size of the field can also be decided based on the maximum size in the different cases.

[0514] Further, in the case where the size of the DCI is smaller than before the panel switching due to the panel switching, the size of the DCI can also be adjusted by padding (adding) zeros (alignment can also be performed).

[0515] According to the fourth embodiment described above, the UE can implement the panel switching corresponding to the plurality of cases where the plurality of panels are applied using the DCI.

[0516] <5th Embodiment>

[0517] Regarding the above problem 3, the fifth embodiment describes the dynamic switching of the panel in the UL transmission based on the multiple DCI.

[0518] As described in the above problem 3, in the STxMP based on the multiple DCI, the CORESETPoolIndex #0 (=0) is associated with the SRS resource set of the CB / NCB having a lower ID, and the CORESETPoolIndex #1 (=1) is associated with the SRS resource set of the CB / NCB having a higher ID. The association is fixed.

[0519] However, in the asymmetric panel, as in each of the above embodiments, in order to implement the switching of the panel corresponding to the movement of the UE, the association of the panel and the TRP needs to be changed. In this case, due to the fixed correspondence of the above CORESETPoolIndex and the SRS resource set, it can have an impact on the appropriate panel switching (for example, refer to the upper half of FIG. 25 ).

[0520] That is, according to the panel switching, the association of the CORESETPoolIndex and the SRS resource set also needs to be switched.

[0521] Therefore, in the fifth embodiment, switching of the association of CORESETPoolIndex and SRS resource set is described. In addition, in the fifth embodiment, the example STxMP is described as UL transmission, but is not limited thereto, and can be applied to other UL transmission.

[0522] For example, in the multi-DCI based UL transmission (STxMP), in a case where the UL transmission is scheduled by the DCI associated with the CORESETPoolIndex, the UE can also be dynamically instructed to perform the single-panel UL transmission (e.g., PUSCH transmission) using any one of M (M is 2 or more) panels. In addition, the panels that can be selected from the M panels are not limited to one, and can be several.

[0523] FIGS. 24A-24B is a diagram showing the mode of the UL transmission scheme of each CORESETPoolIndex involved in the fifth embodiment.

[0524] As shown in FIG. 24A , the UL transmission scheduled by the DCI associated with CORESETPoolIndex #0 (=0) can also be supported by the dynamic switching between the single-panel transmissions using panels #1 / #2.

[0525] As shown in FIG. 24B , the UL transmission scheduled by the DCI associated with CORESETPoolIndex #1 (=1) can also be supported by the dynamic switching between the single-panel transmissions using panels #1 / #2.

[0526] Embodiment 5-1

[0527] Embodiment 5-1 relates to a case where two CB / NCB are set for the SRS resource set in the multi-DCI based STxMP.

[0528] In the case where two CB / NCB are set for the SRS resource set, the first SRS resource set can also be associated with CORESETPoolIndex #0, and the second SRS resource set can also be associated with CORESETPoolIndex #1. That is, the association can also be the same as the above-described fixed association.

[0529] One SRS resource set can apply different parameters (e.g., the number of SRS ports, other panel-specific parameters, etc.) to different panels based on dynamic indication from the network (NW).

[0530] For example, one SRS resource set can also be semi-statically configured with multiple sets of parameters (e.g., SRS port number, other panel-specific parameters, etc.) for multiple panels. In this case, the NW can also dynamically indicate / update the association between the SRS resource set and the panel. The UE can also apply the updated set of parameters to one SRS resource set based on the indication.

[0531] In addition, the parameters of one SRS resource can also be dynamically indicated / updated by the NW.

[0532]

[0533] FIG. 25 is a diagram illustrating an example of panel switching involved in Embodiment 5-1. As shown in FIG. 25 Before the panel switching, the SRS port number of each of the 2 panels (panels #0~#1) is 2, 4. The UE performs UL transmission to TRP #0 from panel #0, and to TRP #1 from panel #1. TRP #0 is associated with CORESET Pool Index #0 (SRS resource set #0), and TRP #1 is associated with CORESET Pool Index #1 (SRS resource set #1).

[0534] Here, SRS resource set #0 is associated / configured with SRS resources of 2 ports (2 SRS ports) as the above-mentioned parameter. In addition, SRS resource set #0 is associated with panel #0.

[0535] Similarly, SRS resource set #1 is associated / configured with SRS resources of 4 ports (4 SRS ports) as the parameter. In addition, SRS resource set #1 is associated with panel #1.

[0536] For example, the UE can also receive an indication of panel switching (switching between panels #0 / #1) from the NW. The UE can also update the SRS port number of SRS resource set #0 from 2 to 4, and the SRS port number of SRS resource set #1 from 4 to 2 based on the indication.

[0537] In addition, the UE can also apply the updated SRS resource set #0 (SRS port number) and update the association of the SRS resource set #0 from panel #0 to panel #1. Similarly, the UE can also apply the updated SRS resource set #1 (SRS port number) and update the association of the SRS resource set #1 from panel #1 to panel #0.

[0538] The UE can also perform UL transmission to TRP #0 from panel #1, and to TRP #1 from panel #0 after the panel switching based on the association of the updated SRS resource set #0 with panel #1, and the association of the updated SRS resource set #1 with panel #0. ​

[0539] Thus, in FIG. 25 In Embodiment 5-1 illustrated above, an example is shown in which, at the time of panel switching, the association of CORESETPoolIndex with the TRP is maintained as it is, and the parameters corresponding to the SRS resource set are updated, and the panel associated with the SRS resource set is switched.

[0540] Embodiment 5-2

[0541] Embodiment 5-2 relates to a case in which M (M is 2 or more) CB / NCB SRS resource sets are configured in multi-DCI based STxMP.

[0542] In the case where M CB / NCB SRS resource sets are configured, in order to indicate dynamic switching between multiple panels, the SRS resource set indicator field (other field / new field) can also be used. The SRS resource set indicator field can also indicate PUSCH transmission associated with one SRS resource set selected from the M SRS resource sets. The selected one SRS resource set can be any one of the M SRS resource sets. In addition, the selected SRS resource set is not limited to one, and can also be several SRS resource sets.

[0543] Specific examples

[0544] FIGS. 26A-26B is a diagram showing a mode / combination example of the PUSCH transmission scheme indicated by a specific codepoint within the SRS resource set indicator field related to Embodiment 5-2. In addition, FIGS. 26A-26B The correspondence (combination) of the codepoints illustrated above and the UL transmission scheme can also be changed (may also be rearranged). In addition, the 1st / 2nd / 3rd of the SRS resource set can also be rearranged based on the order of the SRS resource set. In addition, FIGS. 26A-26B The specific PUSCH (UL) transmission schemes illustrated above can not all be supported, and only a part of each diagram can be supported.

[0545] FIG. 26A An example is shown in which one of the 2 SRS resource sets (1st / 2nd) is associated with PUSCH transmission. Specifically, codepoints 0~1 can also indicate that the PUSCH transmission is associated with the first / second SRS resource set.

[0546] FIG. 26B An example is shown in which one of the 3 SRS resource sets (1st / 2nd / 3rd) is associated with PUSCH transmission. Specifically, codepoints 0~2 can also indicate that the PUSCH transmission is associated with the first / second / third SRS resource set. The remaining codepoint 3 can be reserved (Reserved).

[0547] Embodiment 5-3

[0548] Embodiment 5-3 relates to panel switching using MAC CE in multi-DCI based STxMP.

[0549] In the case of multi-DCI, it is assumed that the panel is switched with the rotation of the UE. In this case, the speed of the panel switching can be a problem. For example, the base station (gNB) can be able to identify the rotation of the UE based on the beam report related to L1-RSRP / SINR. However, the base station needs a certain time (e.g., several milliseconds) to identify the rotation of the UE.

[0550] In addition, in the case where the backhaul between the multiple TRPs is not ideal, it is assumed that if a certain TRP uses DCI to indicate panel switching, the other base station needs time to identify the indication via the backhaul.

[0551] In view of the processing time of the UE / gNB at the time of such panel switching, the proposal is panel switching / activation based on MAC CE.

[0552] In Embodiment 5-3, as in Embodiment 5-2, a set of SRS resources of M (M is 2 or more) CB / NCB can also be configured. Here, the association of the set of SRS resources with the CORESETPoolIndex can also be indicated by the MAC CE.

[0553] (Selection 1)

[0554] The MAC CE can also include a field indicating the CORESETPoolIndex and a SRS resource set indicator field associated with the CORESETPoolIndex. In addition, the MAC CE can also include a field indicating a plurality of CORESETPoolIndexes and a plurality of SRS resource set indicator fields associated with each of the plurality of CORESETPoolIndexes.

[0555] (Selection 2)

[0556] The MAC CE can also not include the CORESETPoolIndex. In this case, the MAC CE can also include a plurality of SRS resource set indicator fields associated with the CORESETPoolIndex. Each SRS resource set indicated by the MAC CE can be associated with one CORESETPoolIndex. For example, it can be that the first (first) field of the SRS resource set indicator corresponds to CORESETPoolIndex #0, and the second (second) field corresponds to CORESETPoolIndex #1.

[0557] <Modification example>

[0558] The value of CORESETPoolIndex (#0 / #1) can also be updated per SRS resource set by MAC CE. Further, it can also be that the value of CORESETPoolIndex (#0 / #1) is first set per SRS resource set by RRC, and a specific CORESETPoolIndex is activated / deactivated per SRS resource set by MAC CE.

[0559] According to Embodiment 5-3, the corresponding CORESETPoolIndex can be flexibly switched per SRS resource set using MAC CE.

[0560] According to the fifth embodiment described above, the UE can use DCI / MAC CE to achieve dynamic switching of panels in multi-DCI based UL transmission.

[0561] <Sixth Embodiment>

[0562] Regarding the above-described problem 4, a method of supporting 2 or more panels in multi-DCI based UL transmission is described in the sixth embodiment. In the sixth embodiment, STxMP is exemplified as UL transmission, but is not limited thereto, and can also be applied to other UL transmissions.

[0563] In multi-DCI based UL transmission, in order to support 2 or more panels, at least one of the following options 1-2 can be applied.

[0564] <Option 1>

[0565] X CORESETPoolIndex (X is greater than 2) can also be set. Each CORESETPoolIndex can be associated with one SRS resource set. The PUSCH scheduled by the DCI associated with a certain CORESETPoolIndex can be associated with one SRS resource set and one panel.

[0566] <Option 1-1>

[0567] X CB / NCB SRS resource sets can also be set. The association of CORESETPoolIndex with the SRS resource set can be fixed or semi-statically set. Dynamic panel switching can also be supported by applying, for example, the above-described embodiment 5-1.

[0568] Further, the association of CORESETPoolIndex with the SRS resource set can be based on the order of CORESETPoolIndex and the order of the SRS resource set indicator.

[0569] (Option 1-2)

[0570] Also, M (M is X or more) SRS resource sets of CB / NCB can be configured. The associated SRS resource set, in order to support dynamic panel switching, can be dynamically indicated by the SRS resource set indicator field (DCI / MAC CE including the field) as in Embodiment 5-2 / 5-3.

[0571] < Option 2 >

[0572] As in Rel. 18, two CORESETPoolIndices can also be configured. Each CORESETPoolIndex can also be associated with multiple SRS resource sets. The PUSCH scheduled by the DCI associated with a certain CORESETPoolIndex can also be associated with multiple SRS resource sets and multiple panels.

[0573] (Option 2-1)

[0574] X (X is greater than 2) SRS resource sets of CB / NCB can also be configured. The association of the CORESETPoolIndex with the SRS resource set can also be fixed or semi-statically configured. Dynamic panel switching can also be supported by applying, for example, Embodiment 5-1 described above. In addition, as a variation, whether the CORESETPoolIndex is associated with one / multiple SRS resource sets can also be configured by higher layer signaling, for example.

[0575] In addition, the association of the CORESETPoolIndex with the SRS resource set can also be based on the order of the CORESETPoolIndex and the order of the SRS resource set indicator.

[0576] (Option 2-2)

[0577] M (M is X or more) SRS resource sets of CB / NCB can also be configured. The associated one / multiple SRS resource sets, in order to support dynamic panel switching, can be dynamically indicated by the SRS resource set indicator field (DCI / MAC CE including the field) as in Embodiment 5-2 / 5-3. In Option 2-2, multiple SRS resource sets can also be indicated / associated for one CORESETPoolIndex.

[0578] < Variation >

[0579] Whether the CORESETPoolIndex is associated with one / multiple SRS resource sets can also be semi-statically configured by higher layer signaling, for example.

[0580] < Specific example >

[0581] FIG. 27 is a diagram illustrating an example of a scenario in which multiple panels are supported according to the sixth embodiment. FIG. 27 Corresponding to the above-described option 1, an example in which the UE performs UL transmission to the three TRPs using the three panels is shown.

[0582] As shown in FIG. 27 , the number of SRS ports of each of the three panels (panels #0 to #2) is 2, 2, and 4. The panels #0 to #2 are associated with SRS resource sets #0 to #2, respectively.

[0583] The TRPs #0 to #2 can be associated with CORESETPoolIndex #0 / #1 / #2, respectively.

[0584] The UE performs UL transmission to the TRP #0 from the panel #0, and performs UL transmission to the TRP #1 from the panel #1, and performs UL transmission to the TRP #2 from the panel #2.

[0585] FIG. 28 is a diagram illustrating another example of a scenario in which multiple panels are supported according to the sixth embodiment. FIG. 28 Corresponding to the above-described option 2, an example in which the UE performs UL transmission to the three TRPs using the three panels is shown.

[0586] As shown in FIG. 28 , the number of SRS ports of each of the three panels (panels #0 to #2) is 2, 2, and 4. The panels #0 to #2 are associated with SRS resource sets #0 to #2, respectively.

[0587] The TRP #0 is associated with CORESETPoolIndex #0. The TRPs #1 / #2 are both associated with CORESETPoolIndex #1.

[0588] The UE performs UL transmission to the TRP #0 from the panel #0, and performs UL transmission to the TRP #1 from the panel #1, and performs UL transmission to the TRP #2 from the panel #2.

[0589] According to the sixth embodiment described above, in the multiple-DCI-based UL transmission, it is possible to support two or more panels.

[0590] [Supplement]

[0591] [Notification of information to the UE]

[0592] The notification of any information in the above-described embodiments from the network (Network (NW)) (e.g., Base Station (BS)) to the UE (in other words, the reception of any information from the BS in the UE) can also be made using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.

[0593] In a case where the above-described notification is made by the MAC CE, the MAC CE can also be identified by being included in a MAC subheader by a new Logical Channel ID (LCID) that is not specified in the existing specification.

[0594] In a case where the above-described notification is made by the DCI, the above-described notification can also be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) utilized in scrambling of Cyclic Redundancy Check (CRC) bits assigned to the DCI, a format of the DCI, or the like.

[0595] Further, the notification of any information in the above-described embodiments from the UE can also be made periodically, semi-persistently, or aperiodically.

[0596] [Notification of information from the UE]

[0597] The notification of any information in the above-described embodiments from the UE (to the NW) (in other words, the transmission / reporting of any information from the UE to the BS) can also be made using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PUCCH, PUSCH, PRACH, reference signal), or a combination thereof.

[0598] In a case where the above-described notification is made by the MAC CE, the MAC CE can also be identified by being included in a MAC subheader by a new LCID that is not specified in the existing specification.

[0599] In a case where the above-described notification is made by the UCI, the above-described notification can also be transmitted using the PUCCH or the PUSCH.

[0600] Further, the notification of any information in the above-described embodiments from the UE can also be made periodically, semi-persistently, or aperiodically.

[0601] [Application of Embodiments]

[0602] At least one of the above-described embodiments can also be applied in a case where a specific condition is satisfied. The specific condition can be specified in a specification or notified to a UE / BS using higher layer signaling / physical layer signaling.

[0603] At least one of the above-described embodiments can also be applied only to a UE that reports or supports a specific UE capability.

[0604] The specific UE capability can also mean at least one of the following:

[0605] • Support for a specific process / operation / control / information regarding at least one of the above-described embodiments.

[0606] • Support for STxMP (operation / scheme).

[0607] • Support for UL transmission using TDM / SDM / SFN.

[0608] • Support for multiple asymmetric / symmetric panels.

[0609] • Support for single-DCI multi-TRP TDM repetitive transmission with 2 or more panels.

[0610] • Support for single-DCI multi-TRP STxMP with 2 or more panels.

[0611] • Support for multi-DCI multi-TRP STxMP with 2 or more panels.

[0612] • Support for 2 or more CB / NCB SRS resource sets.

[0613] • Support for 2 or more CORESETPoolIndex.

[0614] Further, the above-described specific UE capability can be a capability applied across all full frequencies (commonly regardless of the frequency), a capability per frequency (e.g., one or a combination of a cell, a band, a band combination, a BWP, a component carrier, and the like), a capability per frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), a capability per SubCarrier Spacing (SCS), and a capability per Feature Set (FS) or per Feature Set Per Component-carrier (FSPC).

[0615] Further, the above-described specific UE capability can be a capability applied across all full duplexes (commonly regardless of the duplex), a capability per duplex (e.g., Time Division Duplex (TDD), Frequency Division Duplex (FDD)).

[0616] Further, at least one of the above-described embodiments can be applied in a case where the UE is configured / activated / triggered by higher layer signaling / physical layer signaling with specific information associated with the above-described embodiments (or implements an action of the above-described embodiments). For example, the specific information can be information indicating activation of a specific STxMP scheme, an arbitrary RRC parameter for a specific version (e.g., Rel. 18 / 19), and the like.

[0617] In a case where the UE does not support at least one of the above-described specific UE capability or the above-described specific information is not configured, the UE can apply, for example, an operation of Rel. 15 / 16.

[0618] (Postscript)

[0619] With regard to an embodiment (first / second embodiment) of the present disclosure, the following invention is postscript.

[0620] [Postscript 1]

[0621] A terminal has:

[0622] a reception unit that receives an indication of switching for uplink (UL) transmission with a plurality of panels; and

[0623] a control unit that controls panel switching for the UL transmission based on the indication of the switching,

[0624] The panels before and after the switching constitute asymmetric panels with respect to each other.

[0625] [Para 2]

[0626] The terminal according to Para 1, wherein

[0627] The plurality of panels constituting the asymmetric panel have different capabilities with respect to at least one of a maximum number of sounding reference signal (SRS) ports, a maximum number of SRS resources, a maximum rank, a full power mode, a codebook subset, a coherence type.

[0628] [Para 3]

[0629] The terminal according to Para 1 or 2, wherein

[0630] The UL transmission is either one of an UL repetitive transmission using time division multiplexing (TDM) based on single downlink control information (single DCI) and a simultaneous UL transmission using spatial division multiplexing (SDM) or single frequency network (SFN) based on single downlink control information (single DCI).

[0631] [Para 4]

[0632] The terminal according to any one of Paras 1 to 3, wherein

[0633] The reception unit receives an indication of the switching of the UL transmission using downlink control information (DCI).

[0634] (Para)

[0635] With respect to an embodiment of the present disclosure (third / fourth embodiment), the invention of the following Para is appended.

[0636] [Para 1]

[0637] A terminal has:

[0638] A reception unit receives an indication of switching of uplink (UL) transmission using a plurality of panels; and

[0639] A control unit controls panel switching for the UL transmission based on the indication of the switching,

[0640] The indication of the switching includes information on a specific panel and a set of sounding reference signal (SRS) resources associated with the specific panel.

[0641] [Para 2]

[0642] The terminal according to Para 1, wherein

[0643] The control unit updates a specific parameter corresponding to a set of SRS resources before the switching based on the information.

[0644] [Para 3]

[0645] The terminal according to Para 1 or 2, wherein

[0646] The control unit switches a set of SRS resources corresponding to a panel before the switching to a set of SRS resources associated with a panel of a target of the switching, based on the information.

[0647] [Para 4]

[0648] The terminal according to any one of Paras 1 to 3, wherein

[0649] The reception unit receives the indication of the switching of the UL transmission using downlink control information (DCI),

[0650] The DCI includes a SRS resource indicator field corresponding to a maximum number of panels supported, or a transmission precoding matrix indicator (TPMI) field.

[0651] (Para)

[0652] Regarding an embodiment of the present disclosure (fifth / sixth embodiment), the invention of the following paras.

[0653] [Para 1]

[0654] A terminal comprising:

[0655] a reception unit that receives an indication of switching of a multiple downlink control information (multi-DCI) based uplink (UL) transmission with multiple panels; and

[0656] a control unit that controls panel switching for the uplink transmission based on the indication of the switching,

[0657] The indication of the switching includes a specific panel, and information about a transmission reception point (TRP) associated with the specific panel.

[0658] [Para 2]

[0659] The terminal according to Para 1, wherein

[0660] The reception unit receives downlink control information or a MAC control element including the information.

[0661] [Para 3]

[0662] The terminal according to Para 1 or 2, wherein

[0663] The indication of the switching includes a specific panel, and information about a set of sounding reference signal (SRS) resources associated with the specific panel.

[0664] The control unit switches a set of SRS resources corresponding to the panel before the switching to a set of SRS resources associated with the panel as a target of the switching, on the basis of the information.

[0665] [Para 4]

[0666] The terminal according to any one of Paras 1 to 3, wherein

[0667] The information includes a set of SRS resource indicators field associated with a specific panel,

[0668] The set of SRS resource indicators field indicates a specific UL transmission associated with a certain set of SRS resources.

[0669] (Wireless communication system)

[0670] Hereinafter, a structure of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-described embodiments of the present disclosure or a combination thereof.

[0671] FIG. 29 is a diagram illustrating an example of a schematic structure of a wireless communication system according to an embodiment. The wireless communication system 1 (may also be simply referred to as system 1) can also be a system that realizes communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), 5th generation mobile communication system New Radio (5G NR), or the like.

[0672] Furthermore, the wireless communication system 1 can also support dual connectivity between multiple radio access technologies (Multi-RAT Dual Connectivity (MR-DC)). MR-DC can also include dual connectivity of LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity of NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0673] In EN-DC, the base station of LTE (E-UTRA) (eNB) is a master node (MN), and the base station of NR (gNB) is a secondary node (SN). In NE-DC, the base station of NR (gNB) is an MN, and the base station of LTE (E-UTRA) (eNB) is an SN.

[0674] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity of both an MN and an SN being base stations of NR (NR-NR Dual Connectivity (NN-DC))).

[0675] The wireless communication system 1 can also have a base station 11 that forms a macro cell C1 with a wide coverage, and a base station 12 (12a-12c) that is configured within the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 can also be located within at least one cell. The configuration, number, and the like of the cells and the user terminal 20 are not limited to the manner shown in the figure. Hereinafter, without distinguishing between the base stations 11 and 12, the base stations 10 are collectively referred to.

[0676] The user terminal 20 can also be connected to at least one of the multiple base stations 10. The user terminal 20 can also use at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).

[0677] Each of the CCs can also be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell Cl can also be included in the FR1, and the small cell C2 can also be included in the FR2. For example, the FR1 can also be a frequency band below 6 GHz (sub-6 GHz), and the FR2 can also be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands, definitions, and the like of the FR1 and the FR2 are not limited to these, and for example, the FR1 can also correspond to a frequency band higher than the FR2.

[0678] Furthermore, in each of the CCs, the user terminal 20 can also communicate using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0679] The plurality of base stations 10 can also be connected through wired (for example, optical fiber based on Common Public Radio Interface (CPRI), X2 interface, or the like) or wireless (for example, NR communication). For example, when NR communication is utilized as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station can also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to a relay station (relay) can also be referred to as an IAB node.

[0680] The base station 10 can also be connected to a core network 30 via another base station 10 or directly. The core network 30 can also include at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), or the like, for example.

[0681] The core network 30 can also include, for example, network functions (Network Functions (NFs)) such as a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), an Operation, Administration and Maintenance (OAM), and the like. In addition, a plurality of functions can also be provided by one network node. Further, communication with an external network (for example, the Internet) can also be performed via a DN.

[0682] The user terminal 20 can also be a terminal that supports at least one of LTE, LTE-A, 5G, and the like.

[0683] In the wireless communication system 1, a wireless access scheme based on Orthogonal Frequency Division Multiplexing (OFDM) can also be used. For example, in at least one of Downlink (DL) and Uplink (UL), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), and the like can also be used.

[0684] The wireless access scheme can also be referred to as a waveform. In addition, in the wireless communication system 1, other wireless access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) can also be used in the wireless access schemes of UL and DL.

[0685] As a downlink channel, in the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared among the user terminals 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), and the like can also be used.

[0686] Further, as an uplink channel, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared among the user terminals 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), and the like can also be used.

[0687] User data, higher layer control information, a System Information Block (SIB), and the like are transmitted through the PDSCH. The user data, the higher layer control information, and the like can also be transmitted through the PUSCH. Further, a Master Information Block (MIB) can also be transmitted through the PBCH.

[0688] Lower layer (lower layer) control information can also be transmitted through the PDCCH. The lower layer control information can also contain, for example, downlink control information (Downlink Control Information (DCI)) containing scheduling information of at least one of the PDSCH and the PUSCH.

[0689] In addition, the DCI that schedules the PDSCH can also be referred to as a DL assignment, a DL DCI, and the like, and the DCI that schedules the PUSCH can also be referred to as an UL grant, an UL DCI, and the like. In addition, the PDSCH can also be rewritten as DL data, and the PUSCH can also be rewritten as UL data.

[0690] In the detection of the PDCCH, a control resource set (CORESET) and a search space can also be utilized. The CORESET corresponds to a resource in which the DCI is searched for. The search space corresponds to a search area of the PDCCH candidates and a search method. One CORESET can also be associated with one or a plurality of search spaces. The UE can also monitor the CORESET associated with a certain search space based on a search space setting.

[0691] One search space can also correspond to the PDCCH candidates equivalent to one or a plurality of aggregation levels. One or a plurality of search spaces can also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting", and the like of the present disclosure can also be rewritten to each other.

[0692] Through the PUCCH, uplink control information (Uplink Control Information (UCI)) containing at least one of channel state information (Channel State Information (CSI)), delivery confirmation information (for example, also referred to as a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, and the like), and a scheduling request (Scheduling Request (SR)) can also be transmitted. Through the PRACH, a random access preamble for establishing a connection with a cell can also be transmitted.

[0693] In addition, in the present disclosure, the downlink, the uplink, and the like can also be described without the "link". Furthermore, it can also be described without the "Physical" at the beginning of various channels.

[0694] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like can also be transmitted. As the DL-RS, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), and the like can also be transmitted in the wireless communication system 1.

[0695] The synchronization signal can be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)). A signal block including the SS (PSS, SSS) and the PBCH (and the DMRS for the PBCH) can also be referred to as an SS / PBCH block, an SS block (SS Block (SSB)), or the like. In addition, the SS, the SSB, and the like can also be referred to as a reference signal.

[0696] Further, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), and the like can also be transmitted. In addition, the DMRS can also be referred to as a user terminal-specific reference signal (UE-specific Reference Signal).

[0697] (BASE STATION)

[0698] FIG. 30is a drawing showing an example of a structure of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission path interface (transmission line interface) 140. Note that the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140 can each be provided more than one.

[0699] Note that, in the present example, functional blocks of the characteristic portions in the present embodiment are mainly shown, and it is also conceivable that the base station 10 has other functional blocks required for wireless communication. Part of the processing of each unit described below can also be omitted.

[0700] The control unit 110 implements control of the entire base station 10. The control unit 110 can be constituted by a controller, a control circuit, or the like described based on common knowledge in the technical field to which the present disclosure pertains.

[0701] The control unit 110 can also control generation of signals, scheduling (for example, resource allocation, mapping), and the like. The control unit 110 can also control transmission / reception, measurement, and the like using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140. The control unit 110 can also generate data, control information, a sequence, and the like transmitted as signals, and forward them to the transmission / reception unit 120. The control unit 110 can also perform call processing (setting, release, and the like) of a communication channel, state management of the base station 10, management of wireless resources, and the like.

[0702] The transmission / reception unit 120 can include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 can include a transmission processing unit 1211 and a reception processing unit 1212. The transmission / reception unit 120 can be constituted by a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, and the like described based on common knowledge in the technical field to which the present disclosure pertains.

[0703] The transmission / reception unit 120 can be constituted as an integrated transmission / reception unit, or can be constituted by a transmission unit and a reception unit. The transmission unit can be constituted by the transmission processing unit 1211 and the RF unit 122. The reception unit can be constituted by the reception processing unit 1212, the RF unit 122, and the measurement unit 123.

[0704] The transmission / reception antenna 130 can be constituted by an antenna such as an array antenna and the like, which can be explained based on common knowledge in the technical field to which the present disclosure pertains.

[0705] The transmission / reception unit 120 can also transmit the downlink channel, the synchronization signal, the downlink reference signal, and the like described above. The transmission / reception unit 120 can also receive the uplink channel, the uplink reference signal, and the like described above.

[0706] The transmission / reception unit 120 can also form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.

[0707] The transmission / reception unit 120 (transmission processing unit 1211) can also, for example, perform processing at a Packet Data Convergence Protocol (PDCP) layer, processing at a Radio Link Control (RLC) layer (for example, RLC retransmission control), processing at a Medium Access Control (MAC) layer (for example, HARQ retransmission control), and the like, on data, control information, and the like acquired from the control unit 110, and generate a bit string to be transmitted.

[0708] The transmission / reception unit 120 (transmission processing unit 1211) can also perform transmission processing of channel coding (which can include error correction coding), modulation, mapping, filter processing (filtering processing), Discrete Fourier Transform (DFT) processing (as necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, digital-analog conversion, and the like, on the bit string to be transmitted, and output a baseband signal.

[0709] The transmission / reception unit 120 (RF unit 122) can also perform modulation to a wireless band, filter processing, amplification, and the like, on the baseband signal, and transmit a signal of the wireless band via the transmission / reception antenna 130.

[0710] On the other hand, the transmission / reception unit 120 (RF unit 122) can also perform amplification, filter processing (filtering processing), demodulation to a baseband signal, and the like, on a signal of the wireless band received by the transmission / reception antenna 130.

[0711] The transmission / reception unit 120 (reception processing unit 1212) can also apply reception processing such as analog-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (as necessary), filter processing (filtering), demapping, demodulation, decoding (which can also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, and the like to the acquired baseband signal, and acquire user data and the like.

[0712] The transmission / reception unit 120 (measurement unit 123) can also perform measurement related to the received signal. For example, the measurement unit 123 can also perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, and the like based on the received signal. The measurement unit 123 can also measure reception power (for example, Reference Signal Received Power (RSRP)), reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (for example, Received Signal Strength Indicator (RSSI)), propagation path information (for example, CSI), and the like. The measurement result can also be output to the control unit 110.

[0713] The transmission path interface 140 can also transmit and receive signals (backhaul signaling) between apparatuses included in the core network 30 (for example, network nodes that provide NF), other base stations 10, and the like, and acquire, transmit, and the like user data (user plane data), control plane data, and the like for the user terminal 20.

[0714] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure can also be constituted by at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140.

[0715] The transmission / reception unit 120 can also transmit an indication of switching for uplink (UL) transmission from a terminal utilizing multiple panels. The transmission / reception unit 120 can also transmit an indication of switching for multiple downlink control information (multi-DCI) based uplink (UL) transmission by a terminal utilizing multiple panels. The transmission / reception unit 120 can also receive an uplink transmission from the terminal utilizing the switched panel based on the indication of the switching.

[0716] The control unit 110 can also determine panel switching for the uplink transmission based on the indication of the switching.

[0717] (User terminal)

[0718] FIG. 31 is a diagram showing an example of a structure of a user terminal according to an embodiment. The user terminal 20 is provided with a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, one or more of the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 can be provided.

[0719] In addition, in this example, mainly functional blocks of characteristic parts in the present embodiment are shown, and it can be also assumed that the user terminal 20 has other functional blocks necessary for wireless communication. Part of the processing of each unit described below can also be omitted.

[0720] The control unit 210 implements control of the entire user terminal 20. The control unit 210 can be constituted by a controller, a control circuit, or the like described based on common knowledge in the technical field to which the present disclosure pertains.

[0721] The control unit 210 can also control generation, mapping, and the like of signals. The control unit 210 can also control transmission / reception, measurement, and the like using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 can also generate data, control information, sequences, and the like transmitted as signals, and forward them to the transmission / reception unit 220.

[0722] The transmission / reception unit 220 can also include a baseband unit 221, an RF unit 222, a measurement unit 223. The baseband unit 221 can also include a transmission processing unit 2211, a reception processing unit 2212. The transmission / reception unit 220 can be constituted by a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, and the like described based on common knowledge in the technical field to which the present disclosure pertains.

[0723] The transmission / reception unit 220 can be configured as an integrated transmission / reception unit, or can be configured of a transmission unit and a reception unit. The transmission unit can be configured of the transmission processing unit 2211, the RF unit 222. The reception unit can be configured of the reception processing unit 2212, the RF unit 222, the measurement unit 223.

[0724] The transmission / reception antenna 230 can be configured of an antenna such as an array antenna, which can be explained based on common knowledge in the technical field to which the present disclosure pertains.

[0725] The transmission / reception unit 220 can also receive the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transmission / reception unit 220 can also transmit the above-described uplink channel, uplink reference signal, and the like.

[0726] The transmission / reception unit 220 can also form at least one of a transmission beam and a reception beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

[0727] The transmission / reception unit 220 (transmission processing unit 2211) can also perform, for example, PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), and the like, on data, control information, and the like acquired from the control unit 210, and generate a bit string to be transmitted.

[0728] The transmission / reception unit 220 (transmission processing unit 2211) can also perform channel coding (which can include error correction coding), modulation, mapping, filter processing (filtering), DFT processing (as necessary), IFFT processing, precoding, digital-analog conversion, and the like on the bit string to be transmitted, and output a baseband signal.

[0729] In addition, whether or not to apply DFT processing can also be based on the setting of transform precoding. With respect to a certain channel (e.g., PUSCH), in a case where transform precoding is effective (enabled), the transmission / reception unit 220 (transmission processing unit 2211) can perform DFT processing as the above-described transmission processing in order to transmit the channel using a DFT-s-OFDM waveform, and otherwise, the transmission / reception unit 220 (transmission processing unit 2211) can not perform DFT processing as the above-described transmission processing.

[0730] The transmission / reception unit 220 (RF unit 222) can also perform modulation to a radio frequency band, filter processing (filtering), amplification, and the like on the baseband signal, and transmit a signal of the radio frequency band via the transmission / reception antenna 230.

[0731] On the other hand, the transmission / reception unit 220 (RF unit 222) can also perform amplification, filter processing (filtering), demodulation to a baseband signal, and the like on a signal of a radio band received through the transmission / reception antenna 230.

[0732] The transmission / reception unit 220 (reception processing unit 2212) can also apply, to the acquired baseband signal, reception processing such as analog-digital conversion, FFT processing, IDFT processing (as necessary), filter processing (filtering), demapping, demodulation, decoding (may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, and acquire user data and the like.

[0733] The transmission / reception unit 220 (measurement unit 223) can also perform measurement related to a received signal. For example, the measurement unit 223 can also perform RRM measurement, CSI measurement, and the like based on a received signal. The measurement unit 223 can also measure a reception power (for example, RSRP), a reception quality (for example, RSRQ, SINR, SNR), a signal strength (for example, RSSI), propagation path information (for example, CSI), and the like. The measurement result can also be output to the control unit 210.

[0734] In addition, the measurement unit 223 can also derive a channel measurement for CSI calculation based on a channel measurement resource. The channel measurement resource can also be, for example, a Non Zero Power (NZP) CSI-RS resource. Furthermore, the measurement unit 223 can also derive an interference measurement for CSI calculation based on an interference measurement resource. The interference measurement resource can also be at least one of an NZP CSI-RS resource for interference measurement, a CSI-Interference Measurement (IM) resource, and the like. In addition, CSI-IM can also be referred to as CSI-Interference Management (IM), and can also be mutually rewritten with a Zero Power (ZP) CSI-RS. In addition, in the present disclosure, a CSI-RS, an NZP CSI-RS, a ZP CSI-RS, a CSI-IM, a CSI-SSB, and the like can also be mutually rewritten.

[0735] In addition, the transmission unit and the reception unit of the user terminal 20 in the present disclosure can also be constituted by at least one of the transmission / reception unit 220 and the transmission / reception antenna 230.

[0736] The transmission / reception unit 220 can also receive an indication of switching of uplink (UL) transmission with multiple panels. The transmission / reception unit 220 can also receive an indication of switching of multiple downlink control information (multi-DCI) based uplink (UL) transmission with multiple panels. The transmission / reception unit 220 can also receive the indication of switching of the UL transmission using downlink control information (DCI) or a MAC control element.

[0737] The panels before and after the switching can also constitute asymmetric panels to each other. The multiple panels constituting the asymmetric panels can have different capabilities with respect to at least one of a maximum number of sounding reference signal (SRS) ports, a maximum number of SRS resources, a maximum rank, a full power mode, a codebook subset, a coherence type. The UL transmission can be any one of UL repetitive transmission with time division multiplexing (TDM) based on single downlink control information (single-DCI) and simultaneous UL transmission with spatial division multiplexing (SDM) or single frequency network (SFN) based on single downlink control information (single-DCI). The indication of the switching can include a specific panel and information about a set of sounding reference signal (SRS) resources associated with the specific panel. The DCI can include an SRS resource indicator field corresponding to a maximum number of supported panels or a transmission precoding matrix indicator (TPMI) field. The indication of the switching can include a specific panel and information about a transmission reception point (TRP) associated with the specific panel. The indication of the switching can include a specific panel and information about a set of sounding reference signal (SRS) resources associated with the specific panel. The SRS resource set indicator field can indicate a specific UL transmission associated with a certain SRS resource set.

[0738] The control unit 210 can also control panel switching for the uplink transmission based on the indication of the switching. The control unit 210 can also update a specific parameter corresponding to a set of SRS resources before the switching based on the information. The control unit 210 can also switch a set of SRS resources corresponding to a panel before the switching to a set of SRS resources associated with a target panel of the switching based on the information.

[0739] (Hardware structure)

[0740] Further, the block diagrams used in the description of the embodiments above show blocks of functional units. These functional blocks (structural units) are realized by any combination of hardware and software, and the method of realizing each functional block is not particularly limited. That is, each functional block can be realized by one device physically or logically integrated, or by a plurality of devices physically or logically separated and connected directly or indirectly (for example, by wire, wireless, or the like). Each functional block can also be realized by combining the above one device or the above plurality of devices with software.

[0741] Here, among the functions, there are judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, and the like, but are not limited to these. For example, a functional block (structural unit) that realizes a transmission function can also be referred to as a transmitting unit, a transmitter, or the like. Any one of these is as described above, and the method of realizing it is not particularly limited.

[0742] For example, the base station, the user terminal, and the like in an embodiment of the present disclosure can also function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 32 is a diagram showing an example of a hardware structure of a base station and a user terminal according to an embodiment. The base station 10 and the user terminal 20 described above can also be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0743] Further, in the present disclosure, the terms of device, circuit, equipment, section, unit, and the like can be rewritten to each other. The hardware structure of the base station 10 and the user terminal 20 can be configured to include one or more of each device shown in the diagram, or can be configured not to include a part of the devices.

[0744] For example, the processor 1001 is only illustrated one, but there can be a plurality of processors. Further, the processing can be executed by one processor, or can be executed by two or more processors simultaneously, sequentially, or with other methods. In addition, the processor 1001 can be realized by one or more chips.

[0745] As for each function in the base station 10 and the user terminal 20, at least one of the operation and the control of the communication via the communication device 1004, or the readout and the writing of the data in the memory 1002 and the storage 1003 is realized by, for example, reading a specific software (program) into the processor 1001, the memory 1002, or the like, and performing the operation and the control by the processor 1001.

[0746] The processor 1001, for example, causes an operating system to operate to control the entire computer. The processor 1001 can also be constituted by a central processing device (Central Processing Unit (CPU)) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like. For example, at least a part of the above-described control unit 110 (210), the transmission and reception unit 120 (220), and the like can also be realized by the processor 1001.

[0747] Further, the processor 1001 reads out a program (program code), a software module, data, and the like from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processing according to them. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiments can be used. For example, the control unit 110 (210) can also be realized by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be applied to other functional blocks.

[0748] The memory 1002 can also be a computer-readable recording medium such as at least one of a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a Random Access Memory (RAM), other appropriate storage media. The memory 1002 can also be referred to as a register, a cache, a main storage (main storage device), or the like. The memory 1002 can hold a program (program code), a software module, and the like that can be executed in order to implement the wireless communication method related to an embodiment of the present disclosure.

[0749] The storage 1003 can also be a computer-readable recording medium such as at least one of a flexible disc, a floppy (registered trademark) disc, a magneto-optical disc (e.g., a compact disc read-only memory (CD-ROM) or the like), a digital versatile disc, a Blu-ray (registered trademark) disc, a removable disc, a hard disc drive, an intelligent disk (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, and another appropriate recording medium. The storage 1003 can also be referred to as an auxiliary storage device.

[0750] The communication device 1004 is hardware (a transceiver device) for performing communication between computers via at least one of a wired network and a wireless network, also referred to as a network device, a network controller, a network card, a communication module, and the like. The communication device 1004 can also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, the above-described transmission / reception unit 120 (220), the transmission / reception antenna 130 (230), and the like can also be implemented by the communication device 1004. The transmission / reception unit 120 (220) can also be implemented in physical or logical separation by a transmission unit 120a (220a) and a reception unit 120b (220b).

[0751] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, and the like) that receives an input from an outside. The output device 1006 is an output device (e.g., a display, a speaker, a Light Emitting Diode (LED) lamp, and the like) that performs an output to an outside. In addition, the input device 1005 and the output device 1006 can also be a structure that is integrated (e.g., a touch panel).

[0752] Furthermore, the processor 1001, the memory 1002, and the like are connected through a bus 1007 for communicating information. The bus 1007 can be configured with a single bus, or different buses can be configured between the devices.

[0753] Furthermore, the base station 10 and the user terminal 20 can also be configured to include a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), or the like hardware, and a part or all of each functional block can also be implemented using the hardware. For example, the processor 1001 can also be implemented using at least one of these hardware.

[0754] (Modified example)

[0755] In addition, the terms described in the present disclosure and the terms necessary for understanding the present disclosure can also be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (a signal or signaling) can also be rewritten with each other. In addition, a signal can also be a message. A reference signal (RS) can also be simply referred to as RS, and can also be referred to as a pilot, a pilot signal, or the like depending on the applied standard. In addition, a component carrier (CC) can also be referred to as a cell, a frequency carrier, a carrier frequency, or the like.

[0756] A radio frame can also be configured by one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) configuring the radio frame can also be referred to as a subframe. Further, a subframe can also be configured by one or more slots in the time domain. A subframe can also be a fixed time length (for example, 1 ms) independent of numerology.

[0757] Here, numerology can also be a communication parameter applied in at least one of transmission and reception of a certain signal or channel. For example, numerology can also indicate at least one of a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), a number of symbols per TTI, a radio frame structure, a specific filtering processing performed by a transmitter-receiver in the frequency domain, a specific windowing processing performed by the transmitter-receiver in the time domain, or the like.

[0758] A slot can also be composed of one or a plurality of symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, and the like) in the time domain. Furthermore, a slot can also be a time unit based on a numerology.

[0759] A slot can also include a plurality of mini-slots. Each mini-slot can also be composed of one or a plurality of symbols in the time domain. Furthermore, a mini-slot can also be referred to as a sub-slot. A mini-slot can also be composed of a smaller number of symbols than a slot. A PDSCH (or PUSCH) transmitted in a larger time unit than a mini-slot can also be referred to as PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot can also be referred to as PDSCH (PUSCH) mapping type B.

[0760] A radio frame, a subframe, a slot, a mini-slot, and a symbol each represent a time unit for transmitting a signal. A radio frame, a subframe, a slot, a mini-slot, and a symbol can also be referred to by other names respectively corresponding thereto. In addition, a time unit of a frame, a subframe, a slot, a mini-slot, a symbol, and the like in the present disclosure can also be overwritten with each other.

[0761] For example, one subframe can also be referred to as a TTI, a plurality of consecutive subframes can also be referred to as a TTI, one slot or one mini-slot can also be referred to as a TTI. That is, at least one of a subframe and a TTI can be a subframe (1 ms) in the existing LTE, can be a period shorter than 1 ms (for example, 1-13 symbols), or can be a period longer than 1 ms. In addition, a unit representing a TTI can also not be referred to as a subframe, but can be referred to as a slot, a mini-slot, or the like.

[0762] Here, a TTI, for example, refers to a minimum time unit of scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling of allocating a radio resource (a frequency bandwidth, a transmission power, and the like that can be used in each user terminal) to each user terminal in a TTI unit. In addition, the definition of a TTI is not limited thereto.

[0763] A TTI can also be a transmission time unit of a data packet (a transport block), a code block, a codeword, and the like that have been channel-encoded, and can also become a processing unit of scheduling, link adaptation, and the like. In addition, when a TTI is given, a time interval (for example, a number of symbols) to which a transport block, a code block, a codeword, and the like are actually mapped can be shorter than the TTI.

[0764] In addition, in a case where one slot or one mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) can also be a minimum time unit of scheduling. In addition, the number of slots (mini-slots) constituting the minimum time unit of scheduling can also be controlled.

[0765] A TTI having a time length of 1 ms can also be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a slot, etc. A TTI shorter than the normal TTI can also be referred to as a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

[0766] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) can also be rewritten as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) can also be rewritten as a TTI having a TTI length of less than a long TTI and a TTI length of 1 ms or more.

[0767] A resource block (Resource Block (RB)) is a resource allocation unit in a time domain and a frequency domain, and can also include one or more contiguous subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the RB can also be the same regardless of a numerology, for example, can also be 12. The number of subcarriers included in the RB can also be determined based on a numerology.

[0768] In addition, the RB can also include one or more symbols in the time domain, and can also be a length of one slot, one mini-slot, one subframe, or one TTI. One TTI, one subframe, etc. can also be respectively constituted by one or more resource blocks.

[0769] In addition, one or more RBs can also be referred to as a physical resource block (Physical RB (PRB)), a subcarrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0770] In addition, a resource block can also be constituted by one or more resource elements (Resource Element (RE)). For example, one RE can also be a wireless resource area of one subcarrier and one symbol.

[0771] A bandwidth part (BWP) (may also be referred to as a partial bandwidth, etc.) can also indicate a subset of contiguous common RBs (common resource blocks) for a certain numerology in a certain carrier. Here, the common RBs can also be determined by the indices of the RBs from a common reference point of the carrier. The PRB can also be defined in a certain BWP and additionally numbered within the BWP.

[0772] The UL BWP (BWP for UL) and the DL BWP (BWP for DL) can also be included in the BWP. For the UE, one or more BWPs can also be configured within one carrier.

[0773] At least one of the configured BWPs can also be activated, and the UE can not be assumed to transmit and receive a specific signal / channel outside the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure can also be rewritten as "BWP".

[0774] In addition, the structures of the wireless frame, the subframe, the slot, the mini-slot, and the symbol described above are merely examples. For example, the number of subframes included in the wireless frame, the number of slots per subframe or wireless frame, the number of mini-slots included in the slot, the number of symbols included in the slot or the mini-slot, the number of RBs, the number of subcarriers included in the RB, and the number of symbols, the symbol length, the Cyclic Prefix (CP) length, etc. within the TTI can be variously changed.

[0775] Further, the information, the parameters, etc. explained in the present disclosure can be expressed by absolute values, can be expressed by relative values with respect to specific values, and can be expressed by corresponding other information. For example, the wireless resource can also be indicated by a specific index.

[0776] In the present disclosure, the names used for the parameters, etc. are not names in all aspects. Further, the mathematical expressions, etc. using these parameters can also be different from those explicitly disclosed in the present disclosure. The various channels (PUCCH, PDCCH, etc.) and the information elements can be identified by any appropriate names, and thus the various names assigned to the various channels and the information elements are not names in all aspects.

[0777] The information, the signal, etc. explained in the present disclosure can also be expressed by any one of various different technologies. For example, the data, the instruction, the command, the information, the signal, the bit, the symbol, the chip, etc. mentioned throughout the above description can also be expressed by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0778] Furthermore, information, a signal, and the like can be output in at least one of physical (hard) and / or logical (soft) forms. Furthermore, the information, the signal, and the like can be output in at least one of the following: from a higher layer to a lower layer, and from a lower layer to a higher layer. The information, the signal, and the like can be input and output via a plurality of network nodes.

[0779] The information, the signal, and the like that are input and output can be stored in a specific location (for example, a memory) and can be managed using a management table. The information, the signal, and the like that are input and output can be overwritten, updated, or added. The information, the signal, and the like that are output can be deleted. The information, the signal, and the like that are input can be transmitted to another device.

[0780] The notification of the information is not limited to the manners / embodiments described in the present disclosure, and can be performed using other methods. For example, the notification of the information in the present disclosure can also be performed through physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (for example, Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), and the like), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0781] In addition, the physical layer signaling can also be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), and the like. Furthermore, the RRC signaling can also be referred to as an RRC message, and can also be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, and the like. Furthermore, the MAC signaling can also be notified using, for example, a MAC Control Element (CE).

[0782] Furthermore, the notification of specific information (for example, the notification of “X”) is not limited to explicit notification, and can also be performed implicitly (for example, by not performing the notification of the specific information, or by the notification of other information).

[0783] The determination can be made by a value represented by one bit (0 or 1), by a true or false value (Boolean) represented by true or false, or by comparison of numerical values (for example, comparison with a specific value).

[0784] Software, regardless of the term used, such as software, firmware, middle-ware, microcode, hardware description language, or by other names, should be interpreted broadly to mean instructions, instruction sets, code (code), code segments, program code, programs, sub-programs, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, processes, functions, and the like.

[0785] Furthermore, software, instructions, information, and the like can also be transmitted and received via a transmission medium. For example, in the case where software is transmitted from a website, a server, or other remote source (remote source) using at least one of wired technology (coaxial cable, optical fiber cable, twisted pair cable, Digital Subscriber Line (DSL), and the like) and wireless technology (infrared rays, microwaves, and the like), at least one of these wired technology and wireless technology is included in the definition of the transmission medium.

[0786] The terms "system" and "network" used in the present disclosure can be used interchangeably. The "network" can also mean a device (for example, a base station) included in the network.

[0787] In the present disclosure, the terms of “precoding”, “precoder”, “weight (precoding weight)”, “Quasi-Co-Location (QCL)”, “Transmission Configuration Indication state (TCI state)”, “spatial relation”, “spatial domain filter”, “transmission power”, “phase rotation”, “antenna port”, “layer”, “number of layers”, “rank”, “resource”, “resource set”, “beam”, “beam width”, “beam angle”, “antenna”, “antenna element”, “panel”, “UE panel”, “transmitting entity”, “receiving entity”, etc. can be used interchangeably.

[0788] In addition, in the present disclosure, the antenna port can also be mutually rewritten with the antenna port for any signal / channel (e.g., DeModulation Reference Signal (DMRS) port). In the present disclosure, the resource can also be mutually rewritten with the resource for any signal / channel (e.g., reference signal resource, SRS resource, etc.). In addition, the resource can also include time / frequency / code / space / power resource. Furthermore, the spatial domain transmission filter can also include at least one of spatial domain transmission filter and spatial domain reception filter.

[0789] The above group, for example, can also include at least one of a spatial relation group, a Code Division Multiplexing (CDM) group, a Reference Signal (RS) group, a COntrol REsource SET (CORESET) group, a PUCCH group, an antenna port group (e.g., DMRS port group), a layer group, a resource group, a beam group, an antenna group, a panel group, etc.

[0790] Furthermore, in the present disclosure, the beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, Codeword (CW), Transport Block (TB), RS, etc. can also be mutually rewritten.

[0791] Also, in the present disclosure, TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, joint TCI state, and the like can be rewritten to each other.

[0792] Also, in the present disclosure, "QCL", "QCL assumption", "QCL relationship", "QCL type information", "QCL property / properties", "property of a specific QCL type (e.g., Type A, Type D)", "a specific QCL type (e.g., Type A, Type D)", and the like can be rewritten to each other.

[0793] In the present disclosure, index, Identifier (ID), indicator, indication, resource ID, and the like can be rewritten to each other. In the present disclosure, sequence, list, set, group, cluster, cluster, subset, and the like can be rewritten to each other.

[0794] Also, spatial relation information Identifier (ID) (TCI state ID) and spatial relation information (TCI state) can be rewritten to each other. The "spatial relation information (TCI state)" can also be rewritten to "set of spatial relation information (TCI state)", "one or more spatial relation information", and the like. TCI state and TCI can be rewritten to each other. Spatial relation information and spatial relation can be rewritten to each other.

[0795] In the present disclosure, the terms "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", and the like can be used interchangeably. There are also cases where the base station is called with the terms macro cell, small cell, femto cell, pico cell, and the like.

[0796] A base station can accommodate one or plural (for example, three) cells. In a case where a base station accommodates plural cells, the coverage area of the base station as a whole can be divided into plural smaller areas, and each of the smaller areas can also be provided with a communication service by a base station subsystem (for example, a small-sized base station for indoor use (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of a base station and a base station subsystem that provides a communication service in the coverage area.

[0797] In the present disclosure, the case where a base station transmits information to a terminal can also be overwritten with the case where the base station instructs the terminal to perform control / operation based on the information.

[0798] In the present disclosure, the terms "Mobile Station (MS)", "user terminal", "User Equipment (UE)", "terminal", and the like can be used interchangeably.

[0799] There are also cases where a mobile station is called a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a hand set, a user agent, a mobile client, a client, or a number of other appropriate terms.

[0800] At least one of a base station and a mobile station can also be called a transmission device, a reception device, a wireless communication device, and the like. In addition, at least one of a base station and a mobile station can also be a device mounted on a moving object, a moving object body, and the like.

[0801] The mobile body refers to an object that can move, and the moving speed is arbitrary, and of course, the mobile body also includes a case where the mobile body stops. The mobile body includes, for example, a vehicle, a transport vehicle, an automobile, a motorcycle, a bicycle, a Connected Car, a loading shovel, a bulldozer, a wheel loader, a dump truck, a fork lift, a train, a bus, a trolley, a rickshaw, a ship and other watercraft, an airplane, a rocket, an artificial satellite, a drone, a multicopter, a quadcopter, a hot air balloon, and an object mounted thereon, and is not limited to these. In addition, the mobile body can also be a mobile body that autonomously travels based on a travel instruction.

[0802] The mobile body can be a vehicle (for example, a vehicle, an airplane, or the like), can be a mobile body that moves in a unmanned manner (for example, a drone, an autonomous vehicle, or the like), and can be a robot (a manned type or an unmanned type). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move at the time of communication operation. For example, at least one of the base station and the mobile station can also be an Internet of Things (IoT) device such as a sensor.

[0803] FIG. 33 FIG. 33 FIG. 1 is a diagram illustrating an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0804] The drive unit 41 is configured by at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 is configured to include at least a steering wheel (also referred to as a handle), and at least one of the front wheels 46 and the rear wheels 47 is steered based on an operation of the steering wheel operated by a user.

[0805] The electronic control unit 49 is constituted by a microprocessor 61, a memory (ROM, RAM) 62, a communication port (for example, an Input / Output (I / O) port) 63. Signals from various sensors 50-58 provided in the vehicle are input to the electronic control unit 49. The electronic control unit 49 can also be referred to as an Electronic Control Unit (ECU).

[0806] As the signals from the various sensors 50-58, there are a current signal from a current sensor 50 that senses a current of the motor, a rotational speed signal of the front wheel 46 / rear wheel 47 acquired by a rotational speed sensor 51, an air pressure signal of the front wheel 46 / rear wheel 47 acquired by an air pressure sensor 52, a vehicle speed signal acquired by a vehicle speed sensor 53, an acceleration signal acquired by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 acquired by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 acquired by a brake pedal sensor 56, an operation signal of the shift lever 45 acquired by a shift lever sensor 57, a detection signal for detecting an obstacle, a vehicle, a pedestrian, and the like acquired by an object detection sensor 58, and the like.

[0807] The information service unit 59 is constituted by various devices for providing (outputting) various information such as driving information, traffic information, entertainment information, and the like, and one or more ECUs that control these devices, such as a navigation system, an audio system, a speaker, a display, a television, a radio, and the like. The information service unit 59 provides various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40 using information acquired from external devices via the communication module 60 and the like.

[0808] The information service unit 59 can include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, and the like) that receives input from the outside, and can include an output device (for example, a display, a speaker, an LED lamp, a touch panel, and the like) that performs output to the outside.

[0809] The drive assist system unit 64 is constituted by a millimeter wave radar, a Light Detection and Ranging (LiDAR), a camera, a positioner (for example, a Global Navigation Satellite System (GNSS) or the like), map information (for example, a High Definition (HD) map, an Autonomous Vehicle (AV) map, or the like), a gyro system (for example, an Inertial Measurement Device (Inertial Measurement Unit (IMU)), an Inertial Navigation Device (Inertial Navigation System (INS)), or the like), an Artificial Intelligence (AI) chip, an AI processor, such as various devices that provide a function for preventing an accident or reducing a driving burden of a driver, and one or more ECUs that control these devices. Furthermore, the drive assist system unit 64 transmits and receives various information via the communication module 60, and realizes a drive assist function or an autonomous driving function.

[0810] The communication module 60 is capable of communicating with the microprocessor 61 and the structural elements of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) between the microprocessor 61 and the memory (ROM, RAM) 62, and various sensors 50-58 in the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, and the electronic control unit 49 provided in the vehicle 40 via the communication port 63.

[0811] The communication module 60 is capable of being controlled by the microprocessor 61 of the electronic control unit 49, and is a communication device capable of communicating with an external device. For example, various information is transmitted and received between the communication module 60 and the external device via wireless communication. The communication module 60 can be inside and outside the electronic control unit 49. The external device can also be the base station 10, the user terminal 20, or the like described above. Furthermore, the communication module 60 can also be at least one of the base station 10 and the user terminal 20 described above (and can function as at least one of the base station 10 and the user terminal 20).

[0812] The communication module 60 can also transmit at least one of the signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to the external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, and the like can also be referred to as input units that receive input. For example, the PUSCH transmitted by the communication module 60 can also include information based on the above input.

[0813] The communication module 60 receives various kinds of information (traffic information, traffic light information, inter-vehicle information, and the like) transmitted from the external device and displays it to the information service unit 59 provided in the vehicle. The information service unit 59 can also be referred to as an output unit that outputs information (for example, information output to a display, a speaker, and the like based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 60).

[0814] Further, the communication module 60 stores various kinds of information received from the external device in the memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 can also perform control of the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axles 48, the various sensors 50-58, and the like provided in the vehicle 40.

[0815] Further, the base station in the present disclosure can also be rewritten as a user terminal. For example, the structures in which the communication between the base station and the user terminal is replaced with communication between a plurality of user terminals (for example, also referred to as Device-to-Device (D2D), Vehicle-to-Everything (V2X), and the like) can also apply the various modes / embodiments of the present disclosure. In this case, it can also be configured to have the functions of the base station 10 described above by the user terminal 20. Further, the terms of "uplink", "downlink", and the like can also be rewritten as terms corresponding to inter-terminal communication (for example, "sidelink"). For example, the uplink channel, the downlink channel, and the like can also be rewritten as a sidelink channel.

[0816] Similarly, the user terminal in the present disclosure can also be rewritten as a base station. In this case, it can also be configured to have the functions of the user terminal 20 described above by the base station 10.

[0817] In the present disclosure, actions by a base station are sometimes also performed by its upper node depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, consider a Mobility Management Entity (MME), a Serving-Gateway (S-GW), and the like, but not limited to these), or a combination thereof.

[0818] The modes / embodiments explained in the present disclosure can be used alone or in combination, and can also be used in switching as execution proceeds. Furthermore, the processing procedure, timing, flowchart, and the like of the modes / embodiments explained in the present disclosure can also be changed in order as long as there is no contradiction. For example, regarding the method explained in the present disclosure, the elements of various steps are prompted using the order of the examples, but are not limited to the specific order prompted.

[0819] The modes / embodiments explained in the present disclosure can also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), 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 is an integer, a fraction)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, next-generation systems extended, modified, created, or specified based on them, and the like. Furthermore, a plurality of systems can also be combined (for example, LTE or LTE-A, in combination with 5G, and the like) and applied.

[0820] The description "based on" used in the present disclosure does not mean "only based on" unless specifically written. In other words, the description "based on" means both "only based on" and "at least based on".

[0821] Any reference to an element or element means that the quantity or order of that element cannot be limited, although the reference should be construed in favor of that element being defined as the quantity or order suggested by the reference. The use of "first," "second," and other such terminology can be used in the present disclosure as a convenient method of distinguishing between two or more elements, and is not necessarily intended to imply that the elements thus distinguished are necessarily in a particular order or priority. Accordingly, the reference to first and second elements does not mean that there can be only two elements, or that the first element must necessarily precede the second element in some form.

[0822] The term "determining" as used in the present disclosure can encompass a wide variety of actions. For example, "determining" can include calculating, computing, processing, deriving, investigating, looking up (such as looking up in a table, a database or another data structure), ascertaining and the like. Also, "determining" can include receiving (such as receiving information), accessing (such as accessing data in a memory), and the like.

[0823] Also, "determining" can include resolving, selecting, choosing, establishing and the like.

[0824] Also, "determining" can include resolving, selecting, choosing, establishing and the like.

[0825] Also, "determining" can be interchanged with deciding, considering, assuming, expecting, thinking, determining, and the like. Also, "determining" can be interchanged with "not determining."

[0826] In the present disclosure, "expect" can also be rewritten as "be expected" and vice versa. For example, "expect (s)..." (the "..." can be expressed as a that clause, a to infinitive, etc.) can be rewritten as "be expected..." and vice versa. Also, "does not expect..." can be rewritten as "be not expected..." and vice versa. Furthermore, "An apparatus A is not expected..." can be rewritten as "An apparatus B other than the apparatus A does not expect..." with respect to the apparatus A (for example, in a case where the apparatus A is a UE, the apparatus B can also be a base station).

[0827] The "maximum transmit power" described in the present disclosure can mean a maximum value of a transmit power, a nominal UE maximum transmit power, or a rated UE maximum transmit power.

[0828] The term "connected" or "coupled" or all variations thereof used in the present disclosure, or all variations thereof, mean all of the connections or couplings between two or more elements, whether direct or indirect, and can include the existence of one or more intermediate elements between the two elements "connected" or "coupled" to each other. The coupling or connection between the elements can be physical or logical, or a combination thereof. For example, "connected" can be replaced with "accessed".

[0829] In the present disclosure, in a case where two elements are connected, it can be considered that the two elements are "connected" or "coupled" to each other using one or more wires, cables, printed electronics, etc., and are "connected" or "coupled" to each other using electromagnetic energy having a wavelength in a radio frequency domain, a microwave region, an optical (both visible and non-visible) region, etc., as several non-limiting and non-inclusive examples.

[0830] In the present disclosure, the term "A is different from B" can also mean "A and B are different from each other". In addition, the term can also mean "A and B are different from C, respectively". The terms "separated", "coupled", etc. can also be interpreted in the same manner as "different".

[0831] In the present disclosure, in the case where "include", "including", and variations thereof are used, these terms are intended to mean the same as the term "comprising". Furthermore, in the present disclosure, the term "or" is not intended to mean the exclusive or.

[0832] In the present disclosure, in the case where a definite article is added by translation, for example, a, an, and the in English, the present disclosure can also include the case where the noun following these definite articles is plural.

[0833] In the present disclosure, "below", "less than", "above", "more than", "equal to", and the like can also be rewritten with each other. Furthermore, in the present disclosure, terms meaning "good", "bad", "large", "small", "high", "low", "early", "late", "wide", "narrow", and the like are not limited to the positive, comparative, and superlative forms, and can also be rewritten with each other. Furthermore, in the present disclosure, as a description of a term meaning "good", "bad", "large", "small", "high", "low", "early", "late", "wide", "narrow", and the like, a description in which "i-th" (i is an arbitrary integer) is added is not limited to the positive, comparative, and superlative forms, and can also be rewritten with each other (for example, "highest" and "i-th highest" can also be rewritten with each other).

[0834] In the present disclosure, "of", "for", "regarding", "related to", "associated with", and the like can also be rewritten with each other.

[0835] In the present disclosure, "A when (if), B" "if A, B" "B upon A" "B in response to A" "B based on A" "B during / while A" "B before A" "B at (the same time as) / on A" "B after A" "B since A" "B until A" and the like can be rewritten each other. In addition, A, B and the like here can be rewritten as a noun, a verb, an article and the like according to the context. In addition, the time difference between A and B can be almost 0 (immediately after or immediately before). Furthermore, a time offset can be applied in the time at which A occurs. For example, "A" can be rewritten with "A occurs with a time offset before / after" each other. The time offset (for example, 1 or more symbols / slots) can be predetermined or determined by the UE based on the information notified.

[0836] In the present disclosure, timing, time, time instance, arbitrary time unit (for example, slot, sub-slot, symbol, subframe), period, occasion, resource and the like can be rewritten each other.

[0837] The above, the invention related to the present disclosure is explained in detail, but for those skilled in the art, the invention related to the present disclosure is obviously not limited to the embodiments described in the present disclosure. The disclosure is for the purpose of illustration, and the invention related to the present disclosure does not bring any limiting meaning.

Claims

1. A terminal, having: a reception unit that receives an indication of switching for uplink (UL) transmission with multiple panels; and a control unit that controls panel switching for the UL transmission based on the indication of switching, the panels before and after the switching constituting asymmetric panels to each other.

2. The terminal according to claim 1, wherein the multiple panels constituting the asymmetric panels have different capabilities with respect to at least one of a maximum number of sounding reference signal (SRS) ports, a maximum number of SRS resources, a maximum rank, a full power mode, a codebook subset, and a coherence type.

3. The terminal according to claim 1, wherein the UL transmission is either one of UL repetitive transmission with time division multiplexing (TDM) based on single downlink control information (single-DCI based) and simultaneous UL transmission with spatial division multiplexing (SDM) or single frequency network (SFN) based on single downlink control information (single-DCI based).

4. The terminal according to claim 1, wherein the reception unit receives the indication of switching for the UL transmission using downlink control information (DCI).

5. A wireless communication method of a terminal, having: a step of receiving an indication of switching for uplink (UL) transmission with multiple panels; and a step of controlling panel switching for the UL transmission based on the indication of switching, the panels before and after the switching constituting asymmetric panels to each other.

6. A base station, having: a transmission unit that transmits an indication of switching for uplink (UL) transmission from a terminal with multiple panels; and a reception unit that receives the UL transmission from the terminal with the panels switched based on the indication of switching, the panels before and after the switching constituting asymmetric panels to each other. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Images