Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure includes a reception unit that receives information indicating a plurality of channel measurement resource (CMR) groups in a case where a group-based beam report is set, and a control unit that controls transmission of a plurality of joint reporting groups for the plurality of CMR groups, each of the plurality of joint reporting groups representing a plurality of CMRs within the plurality of CMR groups. According to one embodiment of the present disclosure, appropriate communication can be performed with a unit different from an existing cell.

Description

Technical Field

[0001] This disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems. Background Technology

[0002] In Universal Mobile Telecommunications System (UMTS) networks, Long Term Evolution (LTE) was standardized with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). Furthermore, LTE-Advanced (3GPP Rel. 10-14) was standardized with the aim of further increasing capacity and improving sophistication of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).

[0003] The development of successor systems to LTE is also underway (e.g., also known as the 5th generation mobile communication system (5G), 5G+ (plus), the 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 and later, etc.).

[0004] Existing technical documents

[0005] Non-patent literature

[0006] Non-patent document 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 of the Invention

[0007] The problem that the invention aims to solve

[0008] In future wireless communication systems (e.g., NR, 6G, etc.), research is underway to enable cell-free communication by using terminals (user terminals, user equipment (UE)) that are different from existing cells.

[0009] However, specific research on cellless communication is still insufficient. Given this lack of research, there are concerns that improvements in communication quality / throughput may be hampered.

[0010] Therefore, one of the purposes of this disclosure is to provide terminals, wireless communication methods, and base stations that utilize units different from existing cells for appropriate communication.

[0011] Methods for solving problems

[0012] A terminal according to one aspect of this disclosure is characterized by having: a receiving unit that receives information indicating multiple channel measurement resource (CMR) groups when a group-based beam reporting is set; and a control unit that controls the transmission of multiple joint reporting groups for the multiple CMR groups, each of the multiple joint reporting groups representing multiple CMRs within the multiple CMR groups.

[0013] Invention Effects

[0014] According to one method disclosed herein, appropriate communication can be carried out using units different from those in existing communities. Attached Figure Description

[0015] Figure 1A as well as Figure 1B This is a diagram showing an example of RRC information elements related to CSI report settings and CSI resource settings.

[0016] Figure 2A as well as Figure 2B This is a diagram showing an example of RRC information elements associated with the NZP CSI-RS resource set and the CSI-SSB resource set.

[0017] Figure 3 This is a diagram representing an example of an RRC information element associated with a TCI status.

[0018] Figure 4 This is a diagram representing an example of the RRC information element "CSI-ReportConfig" in Rel.16.

[0019] Figure 5 This is a diagram representing an example of a CSI report in Rel.15 NR.

[0020] Figure 6 This is a diagram illustrating an example of a CSI report in the case of enhanced group-based beamreporting.

[0021] Figure 7A as well as Figure 7B This is a diagram that represents an overview of MIMO.

[0022] Figure 8A as well as Figure 8B It is a diagram that shows an overview of a cellular system.

[0023] Figures 9A-9C This is a diagram illustrating an example of a schematic representation of a cellless structure.

[0024] Figure 10 This represents an example of a list of TCI states involved in Option 1 of Implementation 0.1.

[0025] Figure 11 This represents an example of the TCI status list involved in option 2-1 of implementation 0.1.

[0026] Figure 12 This represents an example of a list of TCI states related to option 2-2 of implementation 0.1.

[0027] Figure 13 This represents an example of the mapping between the active TCI state and the code points of the TCI field involved in Option 1 of Implementation 0.2.

[0028] Figure 14 This represents an example of the mapping between the activated TCI state and the code points of the TCI field involved in Option 2 of Implementation 0.2.

[0029] Figure 15 This represents an example of the mapping between the activated TCI state and the code points of the TCI field involved in Option 3 of Implementation 0.2.

[0030] Figure 16 This represents an example of the mapping between the activated TCI state and the code points of the TCI field involved in Option 4 of Implementation 0.2.

[0031] Figure 17 This represents an example of the mapping between the activated TCI state and the code points of the TCI field involved in Option 1 of Implementation 0.3.

[0032] Figure 18 This represents an example of the mapping between the activated TCI state and the code points of the TCI field involved in Option 2 of Implementation 0.3.

[0033] Figure 19 This represents an example of the mapping between the activated TCI state and the code points of the TCI field involved in Option 3 of Implementation 0.3.

[0034] Figure 20 This represents an example of the mapping between the activated TCI state and the code points of the TCI field involved in Option 4 of Implementation 0.3.

[0035] Figure 21 This represents an example of updating the activated TCI state in implementation 0.4.

[0036] Figure 22 This represents another example of updating the activated TCI state in implementation 0.4.

[0037] Figures 23A-23C This represents an example of an indication of the TCI status to be transmitted in implementation 0.4.

[0038] Figure 24 This represents an example of the mapping between the activated TCI state and the code points of the TCI field involved in Option 1 of Implementation 0.5.

[0039] Figure 25 This represents an example of updating a subset of the activated TCI states involved in Option 1 of Implementation 0.6.

[0040] Figure 26 This represents an example of updating a subset of the activated TCI states involved in Option 2 of Implementation 0.6.

[0041] Figure 27 This represents an example of updating a subset of the activated TCI states involved in option 3 of implementation 0.6.

[0042] Figure 28A as well as Figure 28B This is a diagram representing a CMR group and an example of CMR.

[0043] Figure 29A as well as Figure 29B This is a diagram representing a CMR group and an example of CMR.

[0044] Figure 30A as well as Figure 30B This is a diagram representing a CMR group and an example of CMR.

[0045] Figure 31A as well as Figure 31B This is a diagram representing a CMR group and an example of CMR.

[0046] Figures 32A-32C This is a diagram representing an example of a CSI report.

[0047] Figures 33A-33C This is a diagram representing an example of a CSI report.

[0048] Figure 34 This is a diagram representing a CMR group and an example of CMR.

[0049] Figure 35 This is a diagram representing a CMR group and an example of CMR.

[0050] Figure 36 This is a diagram representing a CMR group and an example of CMR.

[0051] Figure 37 This is a diagram representing a CMR group and an example of CMR.

[0052] Figure 38A as well as Figure 38B This is a diagram representing an example of a CSI report.

[0053] Figure 39 This is a diagram illustrating an example of the allocation of SRS resource sets / SRS resources involved in options 1-1 to 1-7 of implementation 0.9.

[0054] Figure 40 This is a diagram illustrating an example of the allocation of SRS resource sets / SRS resources involved in variation 1 of implementation 0.9.

[0055] Figure 41 This is a diagram illustrating an example of the allocation of SRS resource sets / SRS resources involved in variation 2 of implementation 0.9.

[0056] Figure 42 This is a diagram illustrating an example of the application of the beam involved in Implementation 0.12.

[0057] Figure 43 This is an example of the association between the TCI status indication field and the TRP / subcell in implementation 1-1.

[0058] Figure 44 This is an example of the association between the TCI status indication field and the TRP / sub-cell in method C1 following implementation methods 1-2.

[0059] Figure 45 This is an example of the association between the TCI status indication field and the TRP / sub-cell in method C2 following implementation methods 1-2.

[0060] Figure 46A as well as Figure 46B This is an example of a CSI report that follows Option 1 of Implementation Method 2.

[0061] Figure 47A as well as Figure 47B This is an example of a CSI report that follows Option 2 of Implementation Method 2.

[0062] Figure 48 This represents an example of setting / instructing an SRS resource set in accordance with Option 2 of Implementation Method 3.

[0063] Figure 49 This is a diagram illustrating an example of the schematic structure of a wireless communication system according to one embodiment.

[0064] Figure 50 This is a diagram illustrating an example of the structure of a base station according to one embodiment.

[0065] Figure 51 This is a diagram illustrating an example of the structure of a user terminal according to one embodiment.

[0066] Figure 52 This is a diagram illustrating an example of the hardware structure of a base station and a user terminal according to one embodiment.

[0067] Figure 53 This is a diagram illustrating an example of a vehicle according to one embodiment. Detailed Implementation

[0068] (TCI, Spatial Relations, QCL)

[0069] The following is being studied in NR: Based on the Transmission Configuration Indication state (TCI state), control is being exercised over the reception processing (e.g., at least one of receiving, demapping, demodulation, and decoding) and transmission processing (e.g., at least one of transmitting, mapping, precoding, modulation, and encoding) of at least one of the signals and channels (referred to as signal / channel) in the UE.

[0070] TCI states can also represent the TCI states of signals / channels applied to the downlink. The equivalent TCI states of signals / channels applied to the uplink can also be described as spatial relations.

[0071] TCI status refers to information related to the quasi-co-location (QCL) of a signal / channel, and can also be referred to as spatial reception parameters, spatial relation information, etc. TCI status can also be set for the UE on a per-channel or per-signal basis.

[0072] QCL is an indicator that represents the statistical properties of a signal / channel. For example, if a signal / channel has a QCL relationship with other signals / channels, it can also mean that it can be assumed that at least one parameter of Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is the same among these different signals / channels (at least one of them is a QCL).

[0073] Additionally, the spatial reception parameters may also correspond to the UE's receive beam (e.g., receive analog beam), and the beam may also be determined based on the spatial QCL. The QCL (or at least one element of the QCL) in this disclosure may also be rewritten as sQCL (spatial QCL).

[0074] QCLs can also be specified in multiple types (QCL types). For example, four different QCL types (AD) can be set that can be assumed to have the same parameters (or parameter sets).

[0075] The UE envisions a relationship between a certain Control Resource Set (CORESET), channel, or reference signal and other CORESETs, channels, or reference signals in a specific QCL (e.g., QCL type D). This situation can also be referred to as QCL assumption.

[0076] The UE can also determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of the signal / channel based on the TCI state or QCL assumption of the signal / channel.

[0077] TCI status can also be, for example, information related to the QCL of the target channel (in other words, the reference signal (RS) used by the channel) and other signals (e.g., other RS). TCI status can also be set (indicated) by higher layer signaling, physical layer signaling, or a combination thereof.

[0078] Physical layer signaling can also be, for example, downlink control information (Downlink Control Information (DCI)).

[0079] The channel that is set (specified) to TCI state or spatial relationship can be, for example, at least one of the following: downlink shared channel (Physical Downlink Shared Channel (PDSCH))), downlink control channel (Physical Downlink Control Channel (PDCCH))), uplink shared channel (Physical Uplink Shared Channel (PUSCH))), and uplink control channel (Physical Uplink Control Channel (PUCCH))).

[0080] Furthermore, the RS that is related to the channel as QCL can be at least one of the following: a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), a Measurement Reference Signal (Sounding Reference Signal (SRS)), a Tracking CSI-RS (also known as a Tracking Reference Signal (TRS)), or a QCL Detection Reference Signal (also known as a QRS).

[0081] An SSB is a block of signals that contains at least one Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), and broadcast channel (Physical Broadcast Channel (PBCH)). An SSB can also be referred to as an SS / PBCH block.

[0082] The RS of QCL type X in TCI state can also refer to the RS that is in a relationship of QCL type X with a certain channel / signal (DMRS), and the RS can also be called the QCL source of QCL type X in TCI state.

[0083] In this disclosure, the port (antenna port) of a signal (resource, channel) and RS (DL RS, QCL source RS) are QCLed, there is a QCL relationship between the port of a signal and RS, the signal and RS are QCLed, the signal and RS in TCI state are QCLed, the signal and RS in TCI state are QCLed with respect to a specific QCL type, the signal and TCI state are associated, TCI state is set / indicated for the signal, and the UE assumes that the port of the signal and RS in TCI state are QCLed and can also be mutually rewritten.

[0084] In this disclosure, beam, SD beam, spatial domain index, precoding, precoder, quasi co-location (QCL) concept, QCL relationship, transmission configuration indicator (TCI) status, spatial domain filter, spatial domain receive filter, spatial domain transmit filter, reference signal (RS) and spatial receive parameters can also be rewritten to each other.

[0085] (Unified / Common TCI Framework)

[0086] According to the unified TCI framework, multiple (UL / DL) channels / RS can be controlled through a common framework. Regarding the unified TCI framework, instead of specifying TCI states or spatial relationships for each channel as in Rel. 15, it can both indicate a common beam (common TCI state) and apply it to all channels of UL and DL, and also apply the common beam used by UL to all channels of UL and the common beam used by DL to all channels of DL.

[0087] We are researching a common beam for both DL and UL, or a common beam for DL ​​and a common beam for UL (integrated as two common beams).

[0088] The UE can also envision the same TCI state for both UL and DL (joint TCI state, joint TCI pool, joint common TCI pool, joint TCI state set). The UE can also envision different TCI states for each of UL and DL (separate TCI state, separate TCI pool, UL separate TCI pool and DL separate TCI pool, separate common TCI pool, UL common TCI pool and DL common TCI pool).

[0089] UL and DL default beam alignment can also be achieved through MAC CE-based beam management (MAC CE-level beam indication). The default TCI state of the PDSCH can also be updated and matched with the default UL beam (spatial relationship).

[0090] Alternatively, a common beam / unified TCI state can be indicated from the same TCI pool (joint common TCI pool, joint TCI pool, set) used by both UL and DL through DCI-based beam management (DCI-level beam indication). X (>1) TCI states can also be activated via MAC CE. UL / DL DCI can also select one from X active TCI states. The selected TCI state can also be applied to the channels / RS of both UL and DL.

[0091] A TCI pool (set) can be either multiple TCI states set via RRC parameters, or multiple TCI states activated via MAC CE (activating a TCI state, activating a TCI pool, or a set) among multiple TCI states set via RRC parameters. Each TCI state can also be a QCL type A / D RS. As a QCL type A / D RS, it can also be set as SSB, CSI-RS, or SRS.

[0092] The number of TCI states corresponding to each of more than one TRP can also be specified. For example, the number of TCI states (UL TCI states) applied in the UL channel / RS (≥1) and the number of TCI states (DL TCI states) applied in the DL channel / RS (≥1) can also be specified. At least one of N and M can also be notified / set / indicated to the UE via higher-layer signaling / physical layer signaling.

[0093] In this disclosure, when N=M=X (X is any integer), it may also mean notifying / setting / indicating X TCI states (corresponding to X TRPs) common to UL and DL (joint TCI states) to the UE. Furthermore, when N=X (X is any integer) and M=Y (Y is any integer, or Y=X), it may also mean notifying / setting / indicating X UL TCI states (corresponding to X TRPs) and Y DL TCI states (corresponding to Y TRPs) (i.e., independent TCI states) to the UE separately.

[0094] For example, when N=M=1 is recorded, it can also mean to notify / set / indicate to the UE a TCI state common to a UL and DL for a single TRP (the joint TCI state for a single TRP).

[0095] Furthermore, for example, when N=1 and M=1 are recorded, it may also mean that the UE is separately notified / set / indicated a UL TCI state and a DL TCI state (an independent TCI state for a single TRP).

[0096] In addition, for example, when N=M=2 is recorded, it may also mean to notify / set / indicate to the UE the TCI state common to multiple (two) ULs and DLs for multiple (two) TRPs (the joint TCI state for multiple TRPs).

[0097] In addition, for example, when N=2 and M=2 are recorded, it may also mean to notify / set / instruct the UE to multiple (two) UL TCI states and multiple (two) DL TCI states for multiple (two) TRPs (independent TCI states for multiple TRPs).

[0098] Furthermore, the above example illustrates the case where N and M have values ​​of 1 or 2, but the values ​​of N and M can also be 3 or higher, and N and M can also be different.

[0099] Support for N=M=1 in Rel.17 is under investigation. For example, it would also be possible to support indicating a common beam (e.g., common beam) via RRC / MAC CE / DCI, and having this common beam applied to multiple DL / UL channels / reference signals. Furthermore, other scenarios could be supported in Rel.18 and later.

[0100] In a joint DL / UL TCI state (e.g., a joint DL / UL TCI state), the RRC parameter (information element) sets multiple TCI states for both DL and UL. The MAC CE can also activate multiple TCI states among the set TCI states. The DCI can also indicate one of the activated TCI states.

[0101] A DCI can be a UL DCI (e.g., a DCI used for PUSCH scheduling) or a DL DCI (e.g., a DCI used for PDSCH scheduling). The indicated TCI state can also be applied to at least one (or all) of the UL / DL channels / RS. A DCI can also indicate both the UL TCI and the DL TCI.

[0102] A TCI status ID that is indicated can be either a TCI status applied to both UL and DL, or two TCI statuses applied to UL and DL respectively.

[0103] At least one of the multiple TCI states set by RRC parameters and the multiple TCI states activated by MAC CE can also be referred to as a TCI pool (common TCI pool, joint TCI pool, TCI state pool). Multiple TCI states activated by MAC CE can also be referred to as an activated TCI pool (activated common TCI pool).

[0104] Furthermore, in this disclosure, the high-level parameters (RRC parameters) for setting multiple TCI states can also be referred to as setting information for setting multiple TCI states, or simply as "setting information". Additionally, in this disclosure, using a DCI to indicate one of the multiple TCI states can either involve receiving indication information contained in the DCI indicating one of the multiple TCI states, or it can involve only receiving the "indication information".

[0105] In a separate TCI state (e.g., a separate TCI (DL TCI state and UL TCI state)), the RRC parameter sets multiple TCI states (joint common TCI pools) for both DL and UL. The MAC CE can also activate multiple TCI states (activate TCI pools) among the set multiple TCI states. It can also set / activate separate, independent TCI pools for each of UL and DL.

[0106] The DL DCI or new DCI format can also select (indicate) more than one (e.g., one) TCI state. The selected TCI state can also be applied to more than one (or all) DL channels / RS. The DL channel can also be PDCCH / PDSCH / CSI-RS. The UE can also use the Rel.16 TCI state operation (TCI framework) to determine the TCI state of each DL channel / RS. The UL DCI or new DCI format can also select (indicate) more than one (e.g., one) TCI state. The selected TCI state can also be applied to more than one (or all) UL channels / RS. The UL channel can also be PUSCH / SRS / PUCCH. Thus, different DCIs can separately indicate the UL TCI and the DL DCI.

[0107] From Rel.17 NR onwards, it is envisioned that support will be provided via MAC CE / DCI for beam activation / indication to TCI states associated with different physical cell identifiers (PCIs). Furthermore, from Rel.18 NR onwards, it is envisioned that support will be provided via MAC CE / DCI for indicating changes to serving cells with different PCIs.

[0108] The application can also be switched between the joint TCI state and the standalone (DL / UL) TCI state. Which TCI state to use (joint TCI state or standalone TCI state) can be set by the base station to the UE via higher-layer parameters, or it can be switched via the TCI field (TCI state ID) within the DCI.

[0109] The unified TCI framework supports the following modes 1 to 3.

[0110] [Mode 1] TCI state indication based on MAC CE

[0111] [Mode 2] DCI-based TCI state indication with DL assignment (DCI-based TCI state indication by DCI format 1_1 / 1_2 with DL assignment)

[0112] [Mode 3] DCI-based TCI state indication without DL assignment (DCI-based TCI state indication by DCI format 1_1 / 1_2 without DL assignment)

[0113] In addition, the DCI in Mode 2 / Mode 3 mentioned above can also be called beam indication DCI.

[0114] In this disclosure, the TCI state indicated by DCI, the indicated TCI state, the indicating TCI state, the unified TCI state, the TCI state applied to multiple channels / signals, the joint TCI state (for DL ​​and UL), the DL TCI state, the UL TCI state, the Rel.17 TCI state, the common TCI state, the set single unified TCI state, and the activated single unified TCI state can also be overwritten with each other.

[0115] In this disclosure, the TCI state set by RRC parameters, the configured TCI state, the set TCI state, the TCI state that does not follow the unified TCI state, the TCI state other than the unified TCI state, the TCI state / spatial relationship set for a specific channel / signal, and the dedicated TCI state can also be rewritten to each other.

[0116] The unified / public TCI status can also refer to the TCI status indicated by the (Rel.17) DCI / MAC CE / RRC.

[0117] The indicated TCI state can also be shared with at least one of the UE-specific receive, dynamically authorized (DCI) / configured authorized PUSCH and multiple (e.g., all) dedicated PUCCH resources in the PDSCH / PDCCH (updated using DCI / MAC CE / RRC with Rel.17). The TCI state indicated by DCI / MAC CE / RRC can also be referred to as the indicated TCI state.

[0118] In cases where the TCI state is indicated (in Rel.17), a TCI state other than the unified TCI state can also refer to the TCI state set using (Rel.17) MAC CE / RRC (setting TCI state).

[0119] The TCI state setting may not be shared with at least one of the UE-specific receive, dynamically authorized (DCI) / configured authorized PUSCH, and multiple (e.g., all) dedicated PUCCH resources in the PDSCH / PDCCH (updated using DCI / MAC CE / RRC in Rel.17). The TCI state setting may also be structured such that it is set per CORESET / per resource / per resource set via RRC / MAC CE, and the TCI state setting is not updated even if the aforementioned indicated TCI state is updated.

[0120] We are investigating the application of TCI status indicators for UE-specific channels / signals (RS). Additionally, we are investigating the use of higher-layer signaling (RRC signaling) to notify the UE of the application of TCI status indicators for non-UE-specific channels / signals, and which TCI status is being set.

[0121] An investigation is underway to set the RRC parameters associated with setting the TCI state (TCI state ID) to the same structure as the RRC parameters for the TCI state in Rel. 15 / 16. An investigation is also underway to use RRC / MAC CE to set / indicate the TCI state per CORESET / per resource / per resource set. Furthermore, an investigation is underway to investigate how the UE can make decisions based on specific parameters regarding this setting / indication.

[0122] Research is underway to separately update the indicator TCI state and the setting TCI state for the UE. For example, for the UE, if the unified TCI state indicating the TCI state is updated, the update of the setting TCI state may not be performed. Furthermore, research is underway to allow the UE to make a decision based on specific parameters for this update.

[0123] In addition, research is underway on using higher-level signaling (RRC / MAC CE) to switch whether to apply the indicator TCI state or not for PDCCH / PDSCH (apply setting TCI state, apply TCI state with indicator TCI state set separately).

[0124] In addition, for intra-cell beam indication (TCI status indication), research is underway to support TCI status indication for UE-specific CORESET and PDSCH associated with that CORESET, as well as for non-UE-specific CORESET and PDSCH associated with that CORESET.

[0125] In addition, for inter-cell beam indication (e.g., L1 / L2 inter-cell mobility), research is underway to support indication of TCI status for UE-specific CORESET and PDSCH associated with that CORESET.

[0126] In Rel.15, whether a TCI state is indicated for CORESET#0 depends on the base station implementation. In Rel.15, for a CORESET#0 that is indicated with a TCI state, that indicated TCI state is applied. For a CORESET#0 that is not indicated with a TCI state, the SSB selected at the time of the most recent (most recent) PRACH transmission is in the QCL.

[0127] In the unified TCI state framework after Rel.17, the TCI state related to CORESET#0 is being studied.

[0128] For example, within the framework of the unified TCI state after Rel.17, the TCI state indication for CORESET#0 (Rel.17) can be configured by RRC for each CORESET to determine whether to apply the indicated Rel-17 TCI state associated with the serving cell. If not applied, the existing MAC CE / RACH signaling mechanism can be utilized.

[0129] Additionally, in Rel.17, the CSI-RS associated with the TCI state applied to CORESET#0 can also be in QCL with the SSB associated with the serving cell PCI (physical cell ID) (same as Rel.15).

[0130] Alternatively, for CORESET#0, CORESETs with a common search space (CSS), and CORESETs with both CSS and UE-specific search space (USS), the RRC parameter can be used to set whether to follow the TCI state instruction for each CORESET. Even if the TCI state instruction is not set for a particular CORESET, the TCI state instruction can still be applied to that CORESET.

[0131] You can also set whether to follow the indicated TCI state for each non-UE-dedicated channel / RS (other than CORESET) via RRC parameters. If the indicated TCI state is not set for a channel / resource / resource set, you can also apply the set TCI state to that channel / resource / resource set.

[0132] [Antenna Port QCL: Data Physical Layer Procedure / Physical Downlink Shared Channel Association Procedure / Physical Uplink Shared Channel Reception UE Procedure]

[0133] For a UE, in order to decode the PDSCH according to the detected PDCCH accompanied by the DCI used by the UE with the given serving cell, a list of up to M TCI-States can be configured in the higher-layer parameter PDSCH-Config. Here, M depends on the UE capability maxNumberConfiguredTCIstatesPerCC. Each TCI-State contains parameters for setting the QCL relationship between one or two downlink reference signals and the DM-RS port of the PDSCH, the DM-RS port of the PDCCH, or the CSI-RS port of the CSI-RS resource. The QCL relationship is set by the higher-layer parameter qcl-Type1 for the first DL RS and (if set) the higher-layer parameter qcl-Type2 for the second DL RS. In the case of two DL RSs, the QCL type is different regardless of whether the reference is the same DL RS or different DL RSs. The QCL type corresponding to each DL RS can also be provided by the higher-layer parameter qcl-Type in QCL-Info, and can take one of the following values:

[0134] ◇'Type A': {Doppler offset, Doppler spread, average delay, delay spread}

[0135] ◇'Type B': {Doppler offset, Doppler extension}

[0136] ◇'Type C': {Doppler offset, average delay}

[0137] ◇'Type D': {space Rx parameter}

[0138] In order to provide reference signals for DMRS and DMRS of PDSCH and PDCCH and CSI-RS within a certain CC, and further, if the UL TX (transmit) spatial filter can be used and the UL TX (transmit) spatial filter is used for PUSCH and PUCCH resources and SRS based on dynamic permission and setting permission within a certain CC, in order to provide a reference for determining the UL TCI filter, the UE can be configured with a list of up to 128 DLorJointTCIState (DL or joint TCI state) settings in PDSCH-Config.

[0139] If no TCI state (DL or joint TCI state (TCI-State), or ULTCI state (TCI-UL-State)) is set in the BWP within the reference CC, the UE can apply the TCI-State or TCI-UL-State setting from the reference BWP of the reference CC. If the UE is set with dl-OrJointTCI-StateList or TCI-UL-State in any CC within the same band, it is not expected that any of the following will be set except for SpatialRelationInfoPos (location spatial relation information), tci-StatesToAddModList (addition change TCI state list), SpatialRelationInfo (spatial relation information), and PUCCH-SpatialRelationInfo (PUCCH spatial relation information) within that band. For this UE, if the UE is configured with a TCI-State in any CC within the CC list via simultaneousTCI-UpdateList1-r16 (simultaneous TCI update list 1), simultaneousTCI-UpdateList2-r16 (simultaneous TCI update list 2), simultaneousSpatial-UpdatedList1-r16 (simultaneous spatial update list 1), or simultaneousSpatial-UpdatedList2-r16 (simultaneous spatial update list 2), the UE can assume that it is not configured with a dl-OrJointTCI-StateList or TCI-UL-State in any CC within the same band field of the CC list.

[0140] The UE receives an activation command that maps up to eight TCI states and / or up to eight TCI state pairs (one TCI state for the DL channel / signal and / or one TCI state for the UL channel / signal) to the 'Transmission Configuration Indication' field of the DCI field for one or more CCs / DL BWPs, and, if applicable, to the 'Transmission Configuration Indication' field of the DCI field for one or more CCs / UL BWPs. These up to eight TCI states and / or up to eight TCI state pairs are as described in the MAC protocol specification's UE-specific PDSCH TCI State Activation / Deactivation MAC CE or Unified TCI State Activation / Deactivation MAC CE.

[0141] For a set of CCs / DL BWPs, and if applicable, for a set of CCs / UL BWPs, when the set of TCI status IDs is activated and the list of applicable CCs is determined by the CCs indicated in the activation command, the same set of TCI status IDs is applied to all DLs and / or UL BWPs within the indicated CC.

[0142] If the activation command maps a TCI state (at least one of TCI-State and TCI-UL-State) to only one code point, when the mapping indicated for that single TCI code point is applied as described in the requirements for support of Radio Resource Management (RRM) (MAC CE-based DL TCI state handover delay / MAC CE-based UL TCI state handover delay), the UE applies the indicated TCI state (at least one of TCI-State and TCI-UL-State) to one or more CCs / DL BWPs, and, if applicable, to one or more CCs / UL BWPs.

[0143] If the bwp-id or cell corresponding to the QCL type A / D source RS in the QCL-Info of the TCI state is not set, the UE is assumed to have the QCL type A / D source RS set in the CC / DL BWP of the applied TCI state.

[0144] For CORESET, when a UE is configured to receive DCI format 1_1 / 1_2 with an active TCI state (TCI-State or TCI-UL-State), or a list of DL or JointTCI-States (dl-OrJointTCI-StateList) that is configured with a TCI field in the DCI (set to 'enabled' in tci-PresentInDCI or tci-PresentDCI-1-2), the UE receives DCI format 1_1 / 1_2. This DCI format 1_1 / 1_2 provides an indication of the TCI state (at least one of TCI-State and TCI-UL-State) for a CC, or for all CCs in the same CC list set by the simultaneous unified TCI update lists (simultaneousU-TCI-UpdateList1-r17, simultaneousU-TCI-UpdateList2-r17, simultaneousU-TCI-UpdateList3-r17, simultaneousU-TCI-UpdateList4-r17). For the DCI format 1_1 / 1_2, DL allocation can be used if it is possible, or it can be used without DL allocation.

[0145] If DCI format 1_1 / 1_2 does not have DL allocation, the UE can envision (verify) the following.

[0146] ◇CS-RNTI is used for scrambling the CRC of this DCI.

[0147] ◇The following DCI field (special field) values ​​are set as follows:

[0148] ―◇The redundant version (RV) field is all '1's.

[0149] ―◇ The modulation and coding scheme (MCS) field is all '1's.

[0150] ―◇The new data indicator (NDI) field is 0.

[0151] —◇The frequency domain resource assignment (FDRA) field is all '0's for FDRA type 0, or all '1's for FDRA type 1, or all '0's for DynamicSwitch (same as the validation of the PDCCH for release of DL semi-persistent scheduling (SPS) or UL licensed type 2 scheduling).

[0152] If the UE receives a higher-level setting of dl-OrJointTCI-StateList with a single TCI-State that can be used as an indication of TCI state, the UE obtains the QCL assumption from the set TCI state for the DM-RS of PDSCH, DM-RS of PDCCH, and CSI-RS that apply the indication of TCI state.

[0153] If the UE receives a higher-level setting of a dl-OrJointTCI-StateList that can be used as an indication of TCI state, the UE determines the UL TX spatial filter from the set TCI state, if applicable, for PUSCH, PUCCH, and SRS that indicate the TCI state based on dynamic permission and setting permission.

[0154] If a UE in the DL-OrJointTCI-StateList transmits a PUCCH with a positive HARQ-ACK corresponding to a DCI that transmits a TCI state indication without DL allocation, or a PUSCH that corresponds to a PDSCH scheduled via a DCI that transmits a TCI state indication, and the indicated TCI state is different from a previously indicated TCI state, the indicated TCI state (at least one of the indicated TCI-State and the indicated TCI-UL-State) shall be applied from the first time slot (beam application timing 1) after the last symbol of the PUCCH or the PUSCH for at least beamAppTime symbols (beam application time (BAT)). The initial time slot and beamAppTime symbols are both determined on the active BWP within the BWP, which is accompanied by the minimum SCS. This BWP comes from a CC applied at the end of the transmission of the affirmative HARQ-ACK, the PUCCH, or the PUSCH to indicate the TCI state (at least one of the indicated TCI-State and the indicated TCI-UL-State).

[0155] [DCI Format 1_1: Multiplexing and Channel Coding / Downlink Transmission Channel and Control Information / Downlink Control Information / DCI Format]

[0156] In Rel.15 / 16, if the UE does not support activation of BWP changes via DCI, the UE ignores the BWP indicator field. The same operation is also being investigated regarding the relationship between Rel.17 TCI state support and the interpretation of the TCI field. The investigation is underway to determine whether the TCI field is always present in DCI format 1_1 / 1_2 when the UE is configured with a Rel.17 TCI state, and whether the UE ignores the TCI field when it does not support TCI updates via DCI.

[0157] In Rel.15 / 16, the presence of the TCI field (TCI presence information within DCI, tci-PresentInDCI) is set for each CORESET.

[0158] In DCI format 1_1, the TCI field is 0 bits if the higher-layer parameter tci-PresentInDCI is not enabled, and 3 bits otherwise. When the BWP indicator field indicates that a BWP other than BWP is activated, the UE follows the operation below.

[0159] [Operation] When the higher-layer parameter tci-PresentInDCI is not set to valid for the CORESET used to transmit the DCI format 1_1 PDCCH, the UE assumes that tci-PresentInDCI is not set to valid for all CORESETs within the indicated BWP; otherwise, the UE assumes that tci-PresentInDCI is set to valid for all CORESETs within the indicated BWP.

[0160] In DCI format 1_2, the TCI field is 0 bits if the higher-layer parameter tci-PresentInDCI-1-2 is not set; otherwise, it is 1, 2, or 3 bits, determined by the higher-layer parameter tci-PresentInDCI-1-2. When the BWP indicator field indicates that a BWP other than BWP is activated, the UE follows the steps below.

[0161] [Operation] If the higher-layer parameter tci-PresentInDCI-1-2 is not set for the CORESET used to transmit the PDCCH of DCI format 1_2, the UE assumes that tci-PresentInDCI is not set to valid for all CORESETs within the indicated BWP. Otherwise, the UE assumes that tci-PresentInDCI-1-2 is set with the same value as tci-PresentInDCI-1-2 set for the CORESET used to transmit the PDCCH of DCI format 1_2 for all CORESETs within the indicated BWP.

[0162] The value of the TCI field used for the joint DL / UL TCI status indication is associated with the TCI status ID representing the joint DL / UL TCI status.

[0163] For the TCI field used to indicate the independent DL / UL TCI status, the value is associated with at least one of the TCI status IDs representing the TCI status only for DL ​​and the TCI status ID representing the TCI status only for UL. For example, TCI field values ​​000 to 001 are associated with only one TCI status ID for DL, TCI field values ​​010 to 011 are associated with only one TCI status ID for UL, and TCI field values ​​100 to 111 are associated with both one TCI status ID for DL ​​and one TCI status ID for UL.

[0164] [Channel / RS with TCI status indicated by the application]

[0165] The "indicated TCI state" based on MAC CE / DCI can also be applied to the following channels / RS.

[0166] [PDCCH]

[0167] • If `followUnifiedTCIState` is set for CORESET0, the TCI state is indicated to be applied. Otherwise, for this CORESET, the Rel.15 specification is applied. That is, CORESET0 follows the TCI state activated via MACCE, or is QCL-enabled with SSB.

[0168] • For CORESETs with USS / CSS type 3 and index 0 or above, the TCI status is always applied.

[0169] • If a CORESET other than index 0 is set to conform to the uniform TCI state for at least CSS type 3, the indicator TCI state is applied. Otherwise, the configured TCI state is applied to that CORESET.

[0170] [PDSCH]

[0171] • Always apply the indicator TCI status to the UE-dedicated PDSCH.

[0172] • When a non-UE-dedicated PDSCH (a PDSCH scheduled via DCI within the CSS) has its followUnifiedTCIState set (for the CORESET of the PDCCH that schedules the PDSCH), the indicator TCI state can also be applied. Otherwise, the set TCI state for that PDSCH is applied to that PDSCH. Whether a non-UE-dedicated PDSCH follows the indicator TCI state when followUnifiedTCIState is not set for the PDSCH depends on whether followUnifiedTCIState is set for the CORESET used in scheduling that PDSCH.

[0173] [CSI-RS]

[0174] • When the CORESET of the PDCCH that triggers the A-CSI-RS for CSI acquisition or beam management is set to followUnifiedTCIState, the TCI state is indicated. For other CSI-RS, the configured TCI state for that CSI-RS is applied.

[0175] [PUCCH]

[0176] • Always apply the indicator TCI status for all dedicated PUCCH resources.

[0177] [PUSCH]

[0178] • For dynamic / configured license PUSCH, always apply an indication of TCI status.

[0179] [SRS]

[0180] • When the SRS resource sets for A-SRS used for beam management and A / SP / P-SRS used for codebook (CB) / non-codebook (NCB) / antenna switching are set to follow a unified TCI state, the indicated TCI state is applied. For other SRS, the TCI state set within this SRS resource set is applied.

[0181] In this disclosure, the TCI state indicating the unified TCI state, the TCI state applied to a channel / signal set to conform to the unified TCI state, the TCI state applied to the UE-specific PDSCH and the CORESET / PDCCH associated with the USS, and the TCI state applied to the PUCCH and PUSCH can also be overridden with each other.

[0182] (Multiple TRPs)

[0183] In NR, research is underway on one or more Transmission / Reception Points (TRPs) (multiple TRPs) using one or more panels (multiple panels) to perform DL transmissions to the UE. Additionally, research is underway on the UE performing UL transmissions to one or more TRPs.

[0184] Furthermore, multiple TRPs can correspond to the same cell identifier (cell Identifier (ID)), different cell IDs, different TCI state positions / orders, different CORESET pools, or different SRS resource sets. The cell ID can be a physical cell ID (e.g., PCI) or a virtual cell ID.

[0185] In the case where only one TRP (TRP1) transmits to the UE in a multi-TRP configuration (also known as single-mode, single TRP, etc.), TRP1 sends both control signals (PDCCH) and data signals (PDSCH) to the UE.

[0186] In this disclosure, single TRP mode can also refer to the mode in which multiple TRP (modes) are not set.

[0187] In the case where only one TRP in a multi-TRP sends control signals to the UE and the multi-TRP sends data signals (also known as single-master mode), the UE receives each PDSCH sent from the multi-TRP based on a downlink control information (Downlink Control Information (DCI)).

[0188] In a scenario where each of the multiple TRPs sends a separate control signal to the UE, and the multiple TRPs also send data signals (also known as multi-master mode), a first control signal (DCI) can be sent in TRP1, and a second control signal (DCI) can be sent in TRP2. Based on these DCIs, the UE receives each PDSCH sent from the multiple TRPs.

[0189] When a single DCI is used to schedule multiple PDSCHs from multiple TRPs (also known as multiple PDSCHs), the DCI can be referred to as a single DCI (S-DCI, single PDCCH). Furthermore, when multiple DCIs are used to schedule multiple PDSCHs from multiple TRPs separately, these multiple DCIs can also be referred to as multiple DCIs (M-DCI, multiple PDCCHs).

[0190] Different Transport Blocks (TBs) / Code Words (CWs) / different layers can be sent from different TRPs within a multi-TRP system. Alternatively, the same TB / CW / layer can be sent from different TRPs within a multi-TRP system.

[0191] As a method of multi-TRP transmission, non-coherent joint transmission (NCJT) is being investigated. In NCJT, for example, TRP1 performs modulation mapping on a first codeword and layer mapping, transmitting a first PDSCH using a first precoding for a first number of layers (e.g., 2 layers). Furthermore, TRP2 performs modulation mapping on a second codeword and layer mapping, transmitting a second PDSCH using a second precoding for a second number of layers (e.g., 2 layers).

[0192] Furthermore, multiple PDSCHs undergoing NCJT (multiple PDSCHs) can also be defined as having at least partial or complete overlap in the time and frequency domains. That is, for the first PDSCH from the first TRP and the second PDSCH from the second TRP, at least one of the time and frequency resources can overlap.

[0193] These first and second PDSCHs can also be conceived as not being in a quasi-co-located (QCL) relationship. The reception of multiple PDSCHs can also be rewritten as the simultaneous reception of PDSCHs that are not of a certain QCL type (e.g., CQL type D).

[0194] In URLLC for multiple TRPs, support for PDSCH (transport block (TB) or codeword (CW)) repetition across multiple TRPs is being investigated. Methods supporting repetition across multiple TRPs in the frequency domain, layer (spatial) domain, or time domain (URLLC schemes, e.g., schemes 1, 2a, 2b, 3, 4) are being studied. In scheme 1, multiple PDSCHs from multiple TRPs are spatially multiplexed (SDM). In schemes 2a and 2b, PDSCHs from multiple TRPs are frequency multiplexed (FDM). In scheme 2a, the redundancy version (RV) is the same for multiple TRPs. In scheme 2b, the RVs can be the same or different for multiple TRPs. In schemes 3 and 4, multiple PDSCHs from multiple TRPs are time-division multiplexed (TDM). In Scheme 3, multiple PDSCHs from multiple TRPs are transmitted within one time slot. In Scheme 4, multiple PDSCHs from multiple TRPs are transmitted within different time slots.

[0195] Based on this multi-TRP scenario, more flexible transmission control is possible when using high-quality channels.

[0196] NCJT using multiple TRPs / panels may employ high rank. To support both ideal and non-ideal backhaul between multiple TRPs, both single DCI (single PDCCH) and multiple DCI (multiple PDCCH) configurations can be supported. For both single and multiple DCI configurations, the maximum number of TRPs can be two.

[0197] For single PDCCH designs (primarily for ideal backhaul), TCI extensions are being investigated. Each TCI code point within the DCI can also correspond to one or two TCI states. The TCI field size can also be the same as the TCI field size in Rel.15.

[0198] Regarding PDCCH / CORESET as specified in Rel.15, a TCI state without a CORESET pool index (CORESETPoolIndex) (also known as TRP Info) is set to a CORESET.

[0199] Regarding the enhancements to PDCCH / CORESET specified in Rel.16, in multi-TRP based on multi-DCI, the CORESET pool index is set for each CORESET.

[0200] (JT)

[0201] Joint transmission (JT) can also refer to the simultaneous transmission of data from multiple points (e.g., TRPs) to a single UE.

[0202] Rel.17 supports non-coherent joint transmission (NCJT) from two TRPs. PDSCH from the two TRPs can be precoded and decoded independently. Frequency resources can be non-overlapping, partially overlapping, or fully overlapping. In the event of overlap, PDSCH from one TRP becomes interference to PDSCH from the other TRPs.

[0203] In Rel.18, coherent joint transmission (CJT, mTRP CJT) supporting up to four TRPs is under investigation. Data from the four TRPs can also be coherently precoded and transmitted to the UE on the same time-frequency resources. For example, channels from four TRPs can be considered, using the same precoding matrix. "Coherent" can also mean a certain relationship between the phases of multiple received signals. 4TRP joint precoding can also be used to improve signal quality without interference between the four TRPs. Data can also be affected only by interference from sources outside the four TRPs.

[0204] (TCI indication in Rel.18 NR)

[0205] The TCI status setting via RRC follows these guidelines.

[0206] ◇For a serving cell, a maximum of 128 TCI states can be set. In the coordination (cooperation) between multiple TRPs accompanying different PCIs, multiple TCI states can be associated with the SSBs of different PCIs, with a maximum of 8 PCIs.

[0207] The activation of the TCI state via MAC CE follows the procedure below.

[0208] ◇In a single TRP transmission, a maximum of 8 TCI states can be activated for a serving cell, or for a BWP of a serving cell. During handover between multiple TRPs with different PCIs, multiple activated TCI states can be associated with the SSBs of different PCIs, with a maximum of 8 PCI TCI states activated.

[0209] ◇In multi-TRP joint transmission, a maximum of 8 TCI states can be activated per TRP / cell, and a maximum of 16 TCI states can be activated overall. In joint transmission using multiple TRPs with different PCIs, multiple activated TCI states can be associated with the SSBs of different PCIs, and a maximum of 2 PCI TCI states can be activated.

[0210] The indication of TCI status via DCI follows.

[0211] ◇ Multiple code points in the TCI indicator field within the DCI are mapped to multiple TCI states activated via MAC CE.

[0212] ◇In a single TRP transmission, a code point in the TCI indicator field within the DCI is mapped to a combined TCI of DL and UL, or a DL TCI and a UL TCI, or a DL TCI, or a UL TCI.

[0213] ◇In multi-TRP joint transmission based on a single DCI, one code point in the TCI indicator field within the DCI is mapped to one or two DL and UL joint TCIs, or one or two DL TCIs and one or two UL TCIs, or one or two DL TCIs, or one or two UL TCIs.

[0214] ◇In multi-TRP joint transmission based on multiple DCIs, one code point in the TCI indicator field within a DCI is mapped to one or two DL and UL joint TCIs, or one or two DL TCIs and one or two UL TCIs, or one or two DL TCIs, or one or two UL TCIs. Multiple DCIs represent the TCI status for multiple TRPs.

[0215] (CSI)

[0216] In NR, the UE uses a reference signal (or the resources used by the reference signal) to measure the channel state and feeds back (reports) the channel state information (CSI) to the network (e.g., the base station).

[0217] The UE may also use at least one of the following to measure the channel state: Channel State Information Reference Signal (CSI-RS), Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block, Synchronization Signal (SS), DeModulation Reference Signal (DMRS).

[0218] CSI-RS resources may also include at least one of Non-Zero Power (NZP) CSI-RS resources, Zero Power (ZP) CSI-RS resources, and CSI Interference Measurement (CSI-IM) resources.

[0219] Resources used to measure signal components for CSI can also be called Signal Measurement Resources (SMRs) or Channel Measurement Resources (CMRs). SMRs (CMRs) may also include, for example, NZP CSI-RS resources, SSBs, etc., used for channel measurements.

[0220] Resources used to measure interference components for CSI can also be referred to as Interference Measurement Resources (IMRs). An IMR may, for example, include at least one of NZP CSI-RS resources, SSB, ZP CSI-RS resources, and CSI-IM resources for interference measurement.

[0221] SS / PBCH blocks can also be blocks that contain synchronization signals (e.g., primary synchronization signal (PSS), secondary synchronization signal (SSS)) and PBCH (and the corresponding DMRS), and can also be called SS blocks (SSB), etc.

[0222] In addition, CSI may also include at least one of the following: Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), CSI-RS Resource Indicator (CRI), SS / PBCH Block Resource Indicator (SSBRI), Layer Indicator (LI), Rank Indicator (RI), L1-RSRP (Layer 1 Reference Signal Received Power), L1-RSRQ (Reference Signal Received Quality), L1-SINR (Signal to Interference plus Noise Ratio), and L1-SNR (Signal to Noise Ratio).

[0223] CSI can also have multiple parts. CSI Part 1 can contain relatively few bits of information (e.g., RI). CSI Part 2 can contain relatively many bits of information, such as information determined based on CSI Part 1 (e.g., CQI).

[0224] Furthermore, CSI can be classified into several CSI types. Depending on the CSI type, the type and size of the report can also differ. For example, there can be a CSI type designed for communication using a single beam (also known as Type I CSI, CSI for single beam, etc.) and a CSI type designed for communication using multiple beams (also known as Type II CSI, CSI for multi-beam, etc.). The uses of CSI types are not limited to these.

[0225] As a feedback method for CSI, periodic CSI (P-CSI) reports, aperiodic CSI (A-CSI) reports, and semi-persistent CSI (SP-CSI) reports are being studied.

[0226] The UE can also be notified of CSI measurement configuration information using higher-layer signaling, physical-layer signaling, or a combination thereof.

[0227] In this disclosure, higher-level signaling may also be any one of, such as Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.

[0228] MAC signaling can also use MAC Control Element (MAC CE) or MAC Protocol Data Unit (PDU). Broadcast information can also be Master Information Block (MIB), System Information Block (SIB), Remaining Minimum System Information (RMSI), or Other System Information (OSI).

[0229] Physical layer signaling can also be, for example, downlink control information (Downlink Control Information (DCI)).

[0230] CSI measurement settings can also be configured using the RRC information element "CSI-MeasConfig". CSI measurement settings can also include CSI resource settings (RRC information element "CSI-ResourceConfig"), CSI report settings (RRC information element "CSI-ReportConfig"), etc. CSI resource settings are associated with the resources used for CSI measurements, while CSI report settings are associated with how the UE implements CSI reporting.

[0231] Figure 1A Figure 1B is a diagram representing an example of an RRC information element related to CSI report settings and CSI resource settings. In this example, an excerpt of the fields (also referred to as parameters) contained within the information element is shown. Figure 1A And 1B is described using ASN.1 (Abstract Syntax Notation One) notation. Furthermore, other figures related to RRC information elements (or RRC parameters) in this disclosure are also described using the same notation.

[0232] like Figure 1A As shown, the CSI report configuration information (“CSI-ReportConfig”) includes resource information for channel measurement (“resourcesForChannelMeasurement”). Additionally, the CSI report configuration information may also include resource information for interference measurement (e.g., NZP CSI-RS resource information for interference measurement (“nzp-CSI-RS-ResourcesForInterference”), CSI-IM resource information for interference measurement (“csi-IM-ResourcesForInterference”), etc.). This resource information corresponds to the ID (identifier) ​​(“CSI-ResourceConfigId”) of the CSI resource configuration information.

[0233] In addition, the ID of the CSI resource setting information corresponding to each resource information (also known as the CSI resource setting ID) can be one or more of the same value, or they can be different values.

[0234] like Figure 1BAs shown, the CSI resource configuration information (“CSI-ResourceConfig”) may also include the CSI resource configuration information ID, the CSI-RS resource set list information (“csi-RS-ResourceSetList”), the resource type (“resourceType”), etc. The CSI-RS resource set list may also include at least one of the information of the NZP CSI-RS and SSB used for measurement (“nzp-CSI-RS-SSB”) and the CSI-IM resource set list information (“csi-IM-ResourceSetList”).

[0235] Resource type indicates the behavior of the resource in the time domain, which can be set to "aperiodic", "semi-persistent", or "periodic". For example, the corresponding CSI-RS can also be called A-CSI-RS, SP-CSI-RS, and P-CSI-RS, respectively.

[0236] In addition, channel measurement resources can also be used for calculations such as CQI, PMI, and L1-RSRP. Furthermore, interference measurement resources can also be used for calculations of L1-SINR, L1-SNR, L1-RSRQ, and other interference-related metrics (indicators).

[0237] In the case of interference measurement via CSI-IM, from a resource point of view, each CSI-RS used for channel measurement can also be associated with the CSI-IM resource based on the order of the CSI-RS resources and CSI-IM resources in the corresponding resource set.

[0238] "nzp-CSI-RS-SSB" can also contain NZP CSI-RS resource set list information ("nzp-CSI-RS-ResourceSetList") and SSB resource set list information for CSI measurements ("csi-SSB-ResourceSetList"). These lists can also correspond to more than one NZP CSI-RS resource set ID ("NZP-CSI-RS-ResourceSetId") and CSI-SSB resource set ID ("CSI-SSB-ResourceSetId"), and are used to identify the resources of the measurement object.

[0239] The NZP CSI-RS resource set list information (“nzp-CSI-RS-ResourceSetList”) can also include the NZP CSI-RS resource set ID (“NZP-CSI-RS-ResourceSetId”) for the maximum number of NZP CSI-RS resource sets set per CSI resource (“maxNrofNZP-CSI-RS-ResourceSetsPerConfig”). Alternatively, the maximum number of NZP CSI-RS resource sets set per CSI resource (“maxNrofNZP-CSI-RS-ResourceSetsPerConfig”) can be 16 if the resource type is “aperiodic”, otherwise it is 1 (if the resource type is “semi-persistent” or “periodic”).

[0240] The list of SSB resource sets used for CSI measurements (“csi-SSB-ResourceSetList”) may also include the CSI-SSB resource set ID (“CSI-SSB-ResourceSetId”) for the maximum number of SSB resource sets configured for CSI measurements per CSI resource (“maxNrofCSI-SSB-ResourceSetsPerConfig”). The maximum number of SSB resource sets configured for CSI measurements per CSI resource (“maxNrofCSI-SSB-ResourceSetsPerConfig”) may also be 1.

[0241] The CSI-IM resource set list information (“csi-IM-ResourceSetList”) can also include the CSI-IM resource set ID (“CSI-IM-ResourceSetId”) for the maximum number of CSI-IM resource sets configured for each CSI resource (“maxNrofCSI-IM-ResourceSetsPerConfig”). Alternatively, the maximum number of CSI-IM resource sets configured for each CSI resource (“maxNrofCSI-IM-ResourceSetsPerConfig”) can be 16 if the resource type is “aperiodic”, and 1 otherwise.

[0242] Figure 2A And 2B is a diagram representing an example of an RRC information element associated with the NZP CSI-RS resource set and the CSI-SSB resource set.

[0243] like Figure 2AAs shown, the NZP CSI-RS resource set information (“NZP-CSI-RS-ResourceSet”) includes the NZP CSI-RS resource set ID and one or more NZP CSI-RS resource IDs (“NZP-CSI-RS-ResourceId”).

[0244] NZP CSI-RS resource information (“NZP-CSI-RS-Resource”) may also include the NZP CSI-RS resource ID and the ID of the Transmission Configuration Indication state (TCI state) (“TCI-stateId”). The TCI state will be discussed later.

[0245] like Figure 2B As shown, the CSI-SSB resource set information (“CSI-SSB-ResourceSet”) contains the CSI-SSB resource set ID and one or more SSB index information (“SSB-Index”). The SSB index information can also be an integer, for example, 0 to 63, and is used to identify the SSB within an SS burst.

[0246] Figure 3 This is a diagram representing an example of an RRC information element associated with a TCI status.

[0247] The TCI status refers to information related to the quasi-co-location (QCL) of a channel or signal, and can also be called spatial reception parameters, spatial relation information, etc. The TCI status can also be set or assigned to the UE on a per-channel or per-signal basis.

[0248] like Figure 3 As shown, the TCI state information (“TCI-State”) may also include a TCI state ID and one or more QCL information (“QCL-Info”). The QCL information may also include at least one of the following: information related to the reference signal of the QCL source (RS association information (“referenceSignal”)) and information indicating the QCL type (QCL type information (“qcl-Type”)). The RS association information may also include information such as the index of the RS (e.g., NZP CSI-RS resource ID, SSB index), the index of the serving cell, and the index of the BWP (Bandwidth Part) where the RS is located.

[0249] The UE may also control, for at least one of the signals and channels (referred to as signal / channel), the receiving process (e.g., receiving, demapping, demodulation, decoding, receiving beam determination, etc.) and the transmitting process (e.g., transmitting, mapping, modulation, encoding, transmitting beam determination, etc.) based on the TCI state corresponding to the TCI state ID associated with the signal / channel.

[0250] like Figure 2A As shown, for P-CSI-RS, the associated TCI status can also be set via RRC. Furthermore, for P-CSI-RS, SP-CSI-RS, and A-CSI-RS, the associated TCI status can also be determined based on higher-layer signaling, physical-layer signaling, or a combination thereof.

[0251] (Beam management)

[0252] To date, beam management (BM) methods have been studied in Rel.15 NR. In this beam management, beam selection is performed based on the L1-RSRP reported by the UE. Changing (switching) the beam of a signal / channel can also be equivalent to changing the TCI state of that signal / channel and at least one of the QCL assumptions.

[0253] The UE may also use the uplink control channel (Physical Uplink Control Channel (PUCCH)) or the uplink shared channel (Physical Uplink Shared Channel (PUSCH)) to report (transmit) measurement results used for beam management. These measurement results may, for example, be a CSI including at least one of L1-RSRP, L1-RSRQ, L1-SINR, L1-SNR, etc.

[0254] Measurement results reported for beam management (e.g., CSI) can also be referred to as beam measurement, beam measurement report, beam report (beam report), beam report CSI, etc.

[0255] CSI measurements used for beam reporting can also include interference measurements. The UE can also use the resources available for CSI measurements to measure channel quality, interference, etc., and export beam reports.

[0256] The beam report may also include the results of at least one of the channel quality measurements and interference measurements. The results of the channel quality measurements may include, for example, L1-RSRP. The results of the interference measurements may include L1-SINR, L1-SNR, L1-RSRQ, and other interference-related metrics (indicators) (e.g., any metric other than L1-RSRP).

[0257] CSI reports can also be generated based on CSI report settings configured through high-level parameters. Figure 4 This is an example of the RRC information element "CSI-ReportConfig" in Rel.16. Figure 4 Extracted from Figure 1A Other sections of the same CSI report configuration information (CSI-ReportConfig).

[0258] CSI report settings can also include "report quantity," which is information about the parameters reported in a report instance (e.g., a CSI) (also represented by the RRC parameter "reportQuantity"). Report quantity is defined as an ASN.1 object type such as "choice." Therefore, one of the parameters specified as the report quantity (cri-RSRP, ssb-Index-RSRP, etc.) is set.

[0259] UEs whose higher-level parameters (e.g., the RRC parameter "groupBasedBeamReporting" related to group-based beam reporting) in the CSI report setting information are set to disabled can also configure beam measurement resource IDs (e.g., SSBRI, CRI) and the measurement results (e.g., L1-RSRP) corresponding to each ID for each report setting (a report instance) that include different numbers of higher-level parameters (e.g., the RRC parameter "nrofReportedRS" indicating the number of RSs reported) in the CSI report setting information.

[0260] When groupBasedBeamReporting is enabled, UEs with this setting report CRI / SSBRIs in groups (e.g., one group of CRI / SSBRIs). This group may contain multiple (e.g., two) CRI / SSBRIs. Multiple (e.g., two) CRI / SSBRIs can also mean that they are received simultaneously by the UE.

[0261] For example, a UE with groupBasedBeamReporting enabled can also configure each report to include two different beam measurement resource IDs (e.g., CRI / SSBRI) and two measurement results (e.g., L1-RSRP) corresponding to each ID. These two beam measurement resources (CSI-RS resource and SSB resource) can be received simultaneously by the UE using a single spatial domain receive filter or multiple simultaneous spatial domain receive filters.

[0262] also, Figure 2A The NZP CSI-RS resource set information shown may also include information related to repetition within the resources of that resource set. Information related to this repetition may, for example, indicate 'on' or 'off'. Additionally, 'on' can also be indicated as 'enabled' or 'valid', and 'off' can be indicated as 'disabled' or 'invalid'.

[0263] For example, for a resource set that is repeatedly set to 'on', the UE may also assume that the resources within that resource set are transmitted using the same downlink spatial domain transmission filter. In this case, the UE may also assume that the resources within that resource set are transmitted using the same beam (e.g., from the same base station using the same beam).

[0264] For resource sets that are repeatedly set to 'off', the UE may also implement the following control: it should not (must not) assume (or may not assume) that the resources within that resource set are transmitted using the same downlink spatial domain transmission filter. In this case, the UE may also assume that the resources within that resource set are not transmitted using the same beam (but are transmitted using different beams). That is, for resource sets that are repeatedly set to 'off', the UE may also assume that the base station performs beam scanning.

[0265] In Rel.15 NR, the cri-RSRP and ssb-Index-RSRP in the report quantity are associated with beam management. The cri-RSRP is set as the UE report CRI of the report quantity and the corresponding L1-RSRP. The ssb-Index-RSRP is set as the UE report SSBRI of the report quantity and the corresponding L1-RSRP.

[0266] Figure 5This is a diagram representing an example of a CSI report in Rel.15 NR. Figure 5 This shows the mapping order of CSI fields contained in a CSI report (the nth CSI report #n) for CSI / RSRP or SSBRI / RSRP reporting, as specified in Rel.15.

[0267] Figure 5 The CSI report can contain more than one group of CRI / SSBRI and RSRP. The number of these groups can also be set by higher-level parameters (e.g., the RRC parameter "nrofReportedRS") that represent the number of reference signal resources of the reporting object.

[0268] Regarding L1-RSRP reporting, with nrofReportedRS set to 1 (as a value of 'n1'), RSRP#1, a field representing a specific number of bits (e.g., m bits) of L1-RSRP indicating the maximum measurement value, is included in the CSI report. In Rel.15 NR, m=7.

[0269] Regarding L1-RSRP reporting, when nrofReportedRS is set to greater than 1, or when groupBasedBeamReporting is enabled, the UE utilizes differential L1-RSRP-based reporting. Specifically, the UE includes RSRP#1 representing the L1-RSRP of the largest measurement value in the same CSI report (report instance), and RSRP#1 for the k-th (in Figure 5 In this context, the largest L1-RSRP (k=2, 3, 4) is calculated as a differential RSRP#k, which is calculated with reference to the largest measurement (e.g., as a difference relative to that measurement). Here, the differential RSRP#k can also be a field with fewer bits (e.g., n bits) than the specific number mentioned above. In Rel.15 NR, n=4.

[0270] For example, for each group, report the absolute RSRP value for the first beam (7 bits, ranging from -140 to -44 dBm using 1 dB steps) and the differential RSRP value for the second beam (4 bits).

[0271] Additionally, when groupBasedBeamReporting is enabled, the UE includes RSRP#1 and differential RSRP#2 in the same CSI report.

[0272] Figure 5CRI / SSBRI#k is a field that represents the CRI / SSBRI corresponding to RSRP#k or differential RSRP#k (included when reporting RSRP#k or differential RSRP#k).

[0273] Additionally, in NRs after Rel.16, nrofReportedRS can be a value of 4 or higher. CSI reports can also include more than four groups of CRI / SSBRI and RSRP. The values ​​of m and n mentioned above are not limited to 7 and 4, respectively.

[0274] Furthermore, L1-SINR reporting can also be performed in NR versions after Rel.16. For L1-SINR reporting, the RSRP in the aforementioned L1-RSRP report can be rewritten as SINR. Additionally, in this case, the settings / parameters for SINR can differ from those for RSRP; for example, nrofReportedRS can be rewritten as nrofReportedRSForSINR, representing the number of reference signal resources for the SINR reporting object.

[0275] For L1-RSRP calculation, the UE can also be configured with CSI-RS resource settings for up to 16 CSI-RS resource sets, with each resource set containing a maximum of 64 resources. The total number of different CSI-RS resources across all resource sets can also be up to 128.

[0276] For L1-SINR calculation, in channel measurement, the UE can also be configured with CSI-RS resource settings for up to 16 CSI-RS resource sets, totaling up to 64 CSI-RS resources or up to 64 SS / PBCH blocks.

[0277] Alternatively, for a UE with a configured aperiodic trigger state list for CSI (higher-layer parameter "CSI-AperiodicTriggerStateList"), if a resource setting linked to CSI-ReportConfig has multiple aperiodic resource sets, only one of the aperiodic CSI-RS resources in that resource setting is associated with a trigger state. In this case, the UE can also be configured by the higher layer to select a CSI-IM / NZP CSI-RS resource set from that resource setting for each trigger state and each resource setting.

[0278] In the channel measurement resource settings of CSI-ReportConfig where the reporting quantity (high-layer parameter reportQuantity) is set to "none", "cri-RI-CQI", "cri-RSRP", "ssb-Index-RSRP", "cri-SINR" or "ssb-Index-SINR", the UE may also expect to have more than 64 NZP CSI-RS resources and SS / PBCH block resources set.

[0279] Alternatively, if the UE is configured with a CSI-ReportConfig where the reporting quantity (higher-layer parameter reportQuantity) is set to "cri-RSRP", "cri-SINR", or "none", and this CSI-ReportConfig is linked to a resource setting where the higher-layer parameter resourceType is set to "aperiodic", the UE does not expect that the CSI-RS resource set included in this resource setting will have more than 16 CSI-RS resources configured.

[0280] Alternatively, if the UE is configured with a CSI-ReportConfig where the reporting quantity (higher-layer parameter reportQuantity) is set to "cri-RSRP", "cri-RI-PMI-CQI", "cri-RI-i1", "cri-RI-i1-CQI", "cri-RI-CQI", "cri-RI-LI-PMI-CQI", or "cri-SINR", and more than two resources for channel measurement are configured in the corresponding resource set, the UE will derive CSI parameters other than the reported CRI based on the reported CRI. Here, CRIk (k≥0) can also correspond to: the (k+1)th configured entry of the associated nzp-CSI-RS-Resources in the corresponding NZP-CSI-RS-ResourceSet for channel measurement, the (k+1)th configured entry of the associated csi-IM-Resource in the csi-IM-ResourceSet, or the (k+1)th configured entry of the associated nzp-CSI-RS-Resources in the corresponding NZP-CSI-RS-ResourceSet for interference measurement (when reportQuantity is set to "cri-SINR" in CSI-ReportConfig). Alternatively, when two CSI-RS resources are configured, each resource can contain a maximum of 16 CSI-RS ports. Alternatively, when three to eight CSI-RS resources are configured, each resource can contain a maximum of eight CSI-RS ports.

[0281] SSBRI can also be reported when the UE is configured with the reporting quantity (higher-layer parameter reportQuantity) set to "ssb-Index-RSRP" in the CSI-ReportConfig. Here, SSBRI k (k≥0) can also correspond to the (k+1)th entry set in the associated csi-SSB-ResourceList within the corresponding CSI-SSB-ResourceSet.

[0282] When the UE is configured with a CSI-ReportConfig where the reporting quantity (higher-layer parameter reportQuantity) is set to "ssb-Index-SINR", the L1-SINR can also be exported based on the reported SSBRI. Here, SSBRIk (k≥0) can also correspond to: the (k+1)th entry of the associated csi-SSB-ResourceList in the corresponding CSI-SSB-ResourceSet for channel measurement, the (k+1)th entry of the associated csi-IM-Resource in the csi-IM-ResourceSet, or the (k+1)th entry of the associated nzp-CSI-RS-Resources in the corresponding NZP-CSI-RS-ResourceSet for interference measurement.

[0283] (Enhanced group-based beam reporting)

[0284] For future wireless communication systems (e.g., Rel. 17 and later), there is research on enhancements to beam management associations for user terminals (user equipment (UE)) with multiple panels (multi-panel) and multiple transmission / reception points (TRPs) (e.g., beam reporting suitable for multiple TRPs, enhanced group-based beam reporting).

[0285] The aforementioned groupBasedBeamReporting can report a single group containing multiple (e.g., two) CRI / SSBRIs in one report, making it suitable for applications such as multi-TRP transmission and multi-panel reception. For example, it can be used to report the best beam of TRP1 as RSRP#1 and the best beam of TRP2 as differential RSRP#2.

[0286] In Rel.15 and 16, group-based beam reporting is enabled for UEs, and for each report setting, only one group containing two different CRI / SSBRI (which can also be rewritten as beam index) can be reported. Therefore, for Rel.17, it is envisioned that the number of groups that can be reported via group-based beam reporting will be increased.

[0287] For example, two resource sets used for channel measurements (e.g., CMR sets) can also be set / triggered as periodic / semi-persistent / aperiodic resource types. Two resource sets used for channel measurements (e.g., CMR sets) can also be, for example, two CSI-SSB-resource sets / two NZP-CSI-RS-resource sets. The UE can also be configured to report up to four CRI / SSBRI groups. Furthermore, the number of groups that can be reported (or, candidate numbers 1 / 2 / 3 / 4) can also be set via higher-layer parameters.

[0288] Each group has multiple (e.g., two) CRI / SSBRIs, and the CRI / SSBRIs of each group can also be selected from two CSI resource sets used in the report setting (e.g., report setting). In addition, the two CRI / SSBRIs of each group can also mean that the UE can receive simultaneously (e.g., receive simultaneously using a spatial domain receive filter).

[0289] Figure 6 This diagram illustrates an example of CSI reporting in the case of enhanced group-based beam reporting. Figure 6 This shows the mapping order of CSI fields contained in a report (e.g., the nth CSI report #n) used for group-based CSI / RSRP or SSBRI / RSRP reports.

[0290] A CSI report can also contain up to X (e.g., X=4) resource groups. Each group contains multiple (e.g., two) CRI / SSBRI. Here, we show the case where each resource group reports CRI or SSBRI#1, CRI or SSBRI#2.

[0291] The CSI field may also contain a resource set indicator (e.g., a resource set indicator). The value of the resource set indicator can also indicate the channel measurement resource set from which the CRI or SSBRI#1 of the first resource group is reported. For example, a 1-bit resource set indicator with a value of 0 or 1 could represent the first or second channel measurement resource set, from which the CRI or SSBRI#1 of the first resource group is reported. All remaining resource groups (e.g., where other resource groups exist to be reported) follow the same mapping order as the first resource group. For example, the CRI or SSBRI#1 of all remaining resource groups can also be reported (or selected) from the channel measurement resource set indicated by the resource set indicator.

[0292] In other words, CRI or SSBRI#1 for each group can also be reported (or selected) from a resource set indicated by a resource set indicator (e.g., a resource set indicator), and CRI or SSBRI#2 can also be reported (or selected) from other resource sets. Thus, in all resource groups, CRI or SSBRI#1 and CRI or SSBRI#2 can also be reported from different channel measurement resource sets.

[0293] In addition, report the RSRP corresponding to the beam index (e.g., CRI or SSBRI) of each resource group. For example, the RSRP of a specific group's CRI or SSBRI can be reported, and for other RSRPs, the difference from the RSRP of the specific group's CRI or SSBRI can also be reported. The RSRP of a specific group's CRI or SSBRI can also be the RSRP of the first resource group's CRI or SSBRI#1.

[0294] Enhanced group-based beam reporting can also be configured (or set to active) via specific higher-level parameters (e.g., groupBasedBeamReporting-r17). Alternatively, enhanced group-based beam reporting can also be deemed valid if higher-level parameters related to the number of reporting groups (e.g., nrofReportedGroups-r17) are set.

[0295] (Event-based beam reporting)

[0296] In future wireless communication systems, research is underway to support event-based beam reporting. Event-based beam reporting can also be called event-triggered beam reporting, or UE-initiated beam reporting.

[0297] <Situations where it can be applied>

[0298] Event-based beam reporting can also be applied to at least one of the following scenarios 1 or 2:

[0299] • [Scenario 1]: L1-RSRP / SINR beam reports containing serving cell PCI / additional PCI (e.g., L1-RSRP / SINR beam reports containing serving cell / additional PCI cells used for L1 / L2 mobility accompanied by L1 / L2 inter-cell mobility / inter-cell multi-TRP (M-TRP inter-cell) / cell handover).

[0300] • [Scenario 2]: L1-RSRP / SINR beam reports containing only the serving cell PCI.

[0301] Alternatively, the UE may report measurement results (e.g., L1-RSRP / L1-SINR) of the NW (e.g., the base station) when a specific event occurs (or, in this disclosure, a specific condition is met / not met).

[0302] Specific events may also be, for example, events related to at least one of the serving cell and the additional cell, and events related to beam reporting of at least one of the PCI of the serving cell and the PCI of the additional cell.

[0303] (Cell-Free)

[0304] In existing wireless communication systems (e.g., 5G NR), a cellular approach is generally used, where a cell is formed by a single antenna / transmitter / receiver point (TRP). The area formed by this cell is fixed / static.

[0305] Furthermore, in existing wireless communication systems (e.g., Rel. 16 and later), distributed multiple-input multiple-output (MIMO, e.g., multi-TRP utilizing multiple TRPs) has been introduced, forming a communication area through the coverage of multiple antennas / TRPs. Distributed MIMO enables simultaneous communication using multiple antennas / TRPs, as well as communication using only one antenna / TRP.

[0306] By employing distributed MIMO, a more suitable line-of-sight environment can be prepared, enabling performance improvements related to MIMO.

[0307] Figure 7A as well as Figure 7B This is a diagram illustrating the general structure of MIMO. Figure 7A The document describes an example of co-located MIMO. In co-located MIMO, a UE communicates with one antenna / TRP.

[0308] On the other hand, Figure 7B The document describes an example of distributed MIMO. In distributed MIMO, a UE communicates with multiple cooperating antennas / TRPs.

[0309] In future wireless communication systems (e.g., Rel.20 and beyond), cellless communication is being studied to reduce interference between multiple antennas / TRPs, prepare for and utilize high frequencies in line-of-sight environments, improve the overall frequency utilization efficiency of the system, further enhance the performance of equal and high-quality communication for all user applications, and reduce energy consumption.

[0310] Cellular-free MIMO can also be referred to as cellless massive MIMO (mMIMO), large-scale distributed MIMO (D-MIMO), or cellless distributed MIMO. Cellular-free MIMO utilizes coherent coordination among multiple access points. It can also incorporate at least one of the following: ultra-densedeployment, scalable cooperation, user-centric clustering, super carrier aggregation, and analog fronthaul. The user plane used in cellless MIMO can also perform more flexible scheduling than existing methods. To facilitate signaling transmission, the control plane used in cellless MIMO can also maintain several cell configurations.

[0311] In cellless environments, unlike traditional cellular systems, multiple antennas / TRPs can form an area (also called a cell / sub-cell, etc.). That is, the term "area" can also refer to a cell whose location is independent of the antenna / TRP.

[0312] In cell-free environments, the set of antennas / TRPs used for area formation can be changed according to the needs of the UEs. For example, the set of antennas / TRPs can be changed not based on the coverage area of ​​the antennas / TRPs, but based on the number of UEs / services / communication purposes (e.g., initial access / data communication / measurement / reporting, etc.).

[0313] In other words, in a cell-free environment, the coverage areas of multiple antennas / TRPs can also overlap.

[0314] In a cell-free environment, the direction of transmitting synchronization signals (e.g., also known as synchronization signal block (SSB), synchronization signal / physical broadcast channel (SS / PBCH) block, etc.) can also be controlled in each antenna / TRP.

[0315] Furthermore, in cell-free environments, the central unit (CU) / distributed unit (DU) can be virtualized for each antenna. Alternatively, each antenna can be managed solely through the CU.

[0316] Figure 8A It is a diagram that shows an overview of a cellular system. Figure 8A The cell formed by each antenna / TRP is shown, and the UE communicates based on this cell.

[0317] on the other hand, Figure 8B This is a diagram representing an overview of a cellless system. Figure 8B In the example shown, the configured antenna / TRP does not form a fixed / static cell in the cellular system. Figure 8B As shown, in a cell-free system, one or more antennas / TRPs form an area corresponding to the conditions. Therefore, in a cell-free system, each antenna / TRP may not correspond to the same physical cell ID, and the areas of multiple antennas / TRPs may overlap.

[0318] Cellular non-cell functionality can also be achieved by adjusting the set of antennas / TRPs controlled by a central control unit (e.g., CU).

[0319] In cellless systems, the following types of cells can also be formed: a first cell with a fixed physical range, similar to a cell in a 5G NR system (e.g., it can also be called a cell / super cell / macro cell / large cell, etc.), and a second cell whose physical range changes semi-statically / dynamically based on conditions (e.g., it can also be called a sub-cell / region / micro cell / cell / small cell / second cell within a first cell, etc.).

[0320] For example, to distinguish it from the second cell, the first cell can also be called a supercell. When a supercell consists of multiple second cells, the second cells can also have the same definition / operation / coverage as existing cells in the NR. For example, to distinguish it from the first cell, the second cell can also be called a subcell. When a supercell or a cell consists of multiple subcells, the subcells can also have the same definition / operation / coverage as existing cells in the NR.

[0321] The first cell can be a newly defined cell in a future wireless communication system, or it can reuse the cell definition in an existing wireless communication system.

[0322] The structures of the first and second communities are considered based on the following assumptions 1 and 2:

[0323] Scenario 1: The first cell consists of multiple TRPs, each with a single cell ID (Physical Cell ID (PCI)). These multiple TRPs can coordinate their transmission and reception.

[0324] Scenario 2: The first cell consists of multiple TRPs (or sub-cells) with different cell IDs. Multiple TRPs / sub-cells can coordinate to transmit and receive.

[0325] Figure 9A This is a diagram illustrating an example of a schematic representation of a cell-free structure (Concept 1). Figure 9A In the example shown, all TRPs within the first cell (supercell / cell) have the same PCI (PCI#0). Multiple TRPs can communicate in a coordinated manner for a single UE.

[0326] Figure 9B This is a diagram illustrating an example of a schematic representation of concept 2 for a cell-free structure. Figure 9B In the example shown, the TRPs contained in the first cell (supercell / cell) have different PCIs (PCI #0 to #9). Multiple TRPs can communicate in a coordinated manner for a single UE.

[0327] Figure 9C This is another diagram illustrating a schematic representation of concept 2 for a cell-free structure. Figure 9C In the example shown, PCI is allocated to each TRP contained in the first cell (supercell / cell). Figure 9C In the example shown, with Figure 9B Unlike other examples, the same PCI can correspond to multiple TRPs. Multiple TRPs can communicate in a coordinated manner for a single UE.

[0328] The coordinated transmission and reception of TRP / subcell can also be based on at least one of the following methods supported in NR.

[0329] • Transmission of a single TRP / subcell accompanying dynamic TRP / subcell handover (single TRP transmission).

[0330] • Joint transmission using multiple TRPs / subcells (multi-TRP joint transmission). This joint transmission can be based on a single DCI or multiple DCIs. This joint transmission can be either incoherent joint transmission (NCJT) or coherent joint transmission (CJT).

[0331] For cell-free operation, assuming ideal backhaul and close coordination, CJT can take precedence over NCJT in joint transmission methods, and joint transmission based on a single DCI can take precedence over joint transmission based on multiple DCIs.

[0332] (analyze)

[0333] In a cellless environment, multiple TRPs / sub-cells are used. However, within a specific time period, the UE can only transmit and receive with a number of TRPs / sub-cells contained in the first cell (supercell / cell). For example, if the first cell (supercell / cell) contains X TRPs / sub-cells, the UE can only transmit and receive with Y (satisfying Y≤X) TRPs / sub-cells within those X TRPs / sub-cells.

[0334] Thus, when the number of TRPs / subcells that the UE can transmit and receive is limited, it is beneficial to indicate the TRP / subcell. Specifically, in the following cases 1 to 3, it is beneficial to indicate the selection of more than one TRP / subcell for the UE to transmit and receive.

[0335] Scenario 1: Activation of TCI state in MAC CE

[0336] • Scenario 2: Non-group-based beam reporting / Group-based beam reporting

[0337] • Scenario 3: Setting up an SRS resource set for a specific purpose (e.g., non-codebook / codebook)

[0338] In Scenario 1, we are investigating how to index only the TCI state of the selected / indicated TRP / subcell when indicating the selection of more than one TRP / subcell. In this case, compared to indexing the TCI states of all TRP / subcells contained within the first cell (supercell / cell), the number of bits required to indicate a single TCI state can be reduced. The association between the TCI state and the TRP / subcell configured via RRC signaling can be appropriately performed.

[0339] In scenario 2, the study is investigating the network's selection of instructing the UE on more than one TRP / subcell / CMR group (each CMR group corresponding to one TRP / subcell). Alternatively, the study is investigating the UE's reporting of the selection of more than one TRP / subcell / CMR group. In this case, it is possible to index only one or more CMRs of the selected / instructed TRP / subcell / CMR group, thus reducing the number of bits required to report a single CMR. Furthermore, the study is investigating how, when the network instructs the UE on the selection of more than one TRP / subcell / CMR group, the network determines / judges the selection of more than one TRP / subcell / CMR group based on at least one of previous beam reports and other information (e.g., based on sensed information, information related to the UE's location).

[0340] In scenario 3, the number of SRS resource sets for specific purposes (e.g., non-codebook / codebook) is being investigated in cellless environments. Furthermore, methods for indicating SRS resource sets for specific purposes (e.g., non-codebook / codebook) used in UL transmission are being investigated. For example, methods using the same SRS resource set fields within the DCI as those used in Rel. 17's multi-TRP TDM iterations or Rel. 18's single-DCI multi-panel transmissions are being investigated.

[0341] In addition, in cellless environments, the selection of a group (CORESET group) that indicates the CORESET monitored by the UE is being studied.

[0342] Furthermore, in cell-free environments, the selection of TCI states that can be applied to multiple channels / reference signals is being investigated.

[0343] However, research on the selection / indication / activation of such TRP / subcell / CMR group / SRS resource set / CORESET group / TCI state is insufficient. In this case, there is a concern that proper communication between the TRP / second cell and UEs may be hindered, thus suppressing the improvement of communication throughput.

[0344] Therefore, the inventors of this invention have devised a method to solve the above-mentioned problems.

[0345] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods involved in each embodiment can be applied individually or in combination.

[0346] (Various rewrites)

[0347] In this disclosure, statements enclosed in parentheses "()" may also indicate explanations of the preceding statement (e.g., spelling corrections), alternative expressions, specific examples, supplementary explanations, etc. Furthermore, in this disclosure, statements enclosed in frames "[]" may be included in the interpretation of the entire article, or may be excluded (ignored) in the interpretation of the entire article. Additionally, "()" and "[]" may also be used for purposes / meanings other than these.

[0348] In this disclosure, "A / B" and "at least one of A and B" may be rewritten as each other. In addition, in this disclosure, "A / B / C" may also mean "at least one of A, B and C".

[0349] In this disclosure, terms such as notification, activation, deactivation, indication (or indication), selection, configuration, update, and determination can be overridden. Similarly, terms such as support, control, ability to control, operation, and ability to operate can also be overridden.

[0350] In this disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher-level parameters, fields, Information Elements (IE), settings, etc., can also be modified interchangeably. In this disclosure, Medium Access Control (MAC) elements (CE): MAC control elements, update commands, activation / deactivation commands, etc., can also be modified interchangeably.

[0351] In this disclosure, higher-layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (e.g., messages from the core network, such as positioning protocol messages, such as NR Positioning Protocol A (NRPPa) / LTE Positioning Protocol (LPP) messages), or combinations thereof.

[0352] In this disclosure, MAC signaling may also use, for example, a MAC Control Element (MACCE) or a MAC Protocol Data Unit (PDU). Broadcast information may also be, for example, a Master Information Block (MIB), a System Information Block (SIB), a Minimum System Information (Remaining Minimum System Information (RMSI)), or Other System Information (OSI).

[0353] In this disclosure, physical layer signaling may also be, for example, downlink control information (DCI), uplink control information (UCI), etc.

[0354] In this disclosure, "having the ability to..." can also be interchanged with "the ability to support / report...".

[0355] In this disclosure, `ceil(x)`, the floor function (ceiling), and the ceiling function can be rewritten interchangeably. In this disclosure, `floor(x)`, the floor function (floor), and the floor function can also be rewritten interchangeably. In this disclosure, `sqrt(x)` and the square root can also be rewritten interchangeably. In this disclosure, `x mod y`, `mod(x,y)`, the mod function, and the modulo operation can also be rewritten interchangeably. In this disclosure, Σ... i=M M+N-1 f(i), Σ i=M M+N-1 f i , f(i) or f over i = M, M+1, ..., M+N-1 i The summation, f(M) + f(M+1) + ... + f(M+N-1), f M +f M+1 +...+f M+N-1 They can also be rewritten interchangeably. C(n,k) can also be related to the number of combinations of choosing k values ​​from n values ​​(combinatorial coefficient) or binomial coefficients. n C k C n k Mutual rewriting.

[0356] In this disclosure, a b The expressions a, b, and b appended to the right of a can also be rewritten. In this disclosure, a c The expressions a^c and a with c appended to the upper right of a can also be rewritten interchangeably. In this disclosure, a b c The expressions a_b^c, and appending b to the lower right and c to the upper right of a, can also be rewritten interchangeably. In this disclosure, x ~ This can be represented by appending ~ above x, and can also be called the x tilde. In this disclosure, x - It can be represented by adding a hyphen (-) above x, and can also be called x-bar.

[0357] In this disclosure, the frequency range corresponding to FR1 can also be 410-7125MHz. In this disclosure, FR2 can also include FR2-1 and FR2-2, the frequency range corresponding to FR2-1 can also be 24250-52600MHz, and the frequency range corresponding to FR2-1 can also be 52600-71000MHz.

[0358] In this disclosure, the TCI state, the joint TCI state of DL and UL (joint DL / UL TCI state, TCI state of both the channel / signal applied to DL and the channel / signal applied to UL), the DL TCI state (independent DL TCI state, TCI state of the channel / signal applied only to DL), and the UL TCI state (independent UL TCI state, TCI state of the channel / signal applied only to UL) can also be rewritten to each other.

[0359] In this disclosure, the joint transmission of multiple TRPs / cells based on a single DCI (joint transmission based on a single DCI, multi-TRP transmission based on a single DCI) can also be at least one of the following methods.

[0360] ◇ Space division multiplexing (SDM) method. This method can also involve associating different ports / layers of the DMRS transmitted by DL / UL with different TCI states.

[0361] ◇Frequency Division Multiplexing (FDM) method. This method can also involve associating different frequency domain resources transmitted by DL / UL with different TCI states.

[0362] ◇ Coherent joint transmission (CJT) mode. This mode can also involve different ports / layers of the DMRS transmitted by DL / UL associating them with different TCI states.

[0363] ◇Single Frequency Network (SFN) mode. This mode can also involve different ports / layers of the DMRS transmitted by DL / UL associating them with different TCI states.

[0364] ◇Time Division Multiplexing (TDM) method. This method can also involve associating multiple different time-domain resources sent by DL / UL with different TCI states.

[0365] In this disclosure, the joint transmission of multiple TRPs / cells based on multiple DCI (joint transmission based on multiple DCI, multi-TRP transmission based on multiple DCI) can also be an association of multiple channels / signals of DL / UL with multiple different TCI states transmitted on multiple resources in overlapping time / frequency domains.

[0366] In this disclosure, the TCI state, beam, spatial relationship, Tx / Rx parameters in the spatial domain, QCL, and reference signal can also be rewritten.

[0367] In this disclosure, TRP, beam groups, TCI state groups, and RS resource sets / groups can also be rewritten to each other.

[0368] In this disclosure, the DCI indicating the TCI status can also schedule PDSCH / PUSCH.

[0369] In this disclosure, coordinated transmission can also be DL transmission or UL transmission using one TCI state indicated within multiple activated TCIs. In this disclosure, joint transmission can also be DL transmission or UL transmission using multiple indicated TCI states / TRPs / subcells. In this disclosure, single TRP transmission / coordinated transmission / joint transmission can also be applied to DL / UL.

[0370] In this disclosure, indexes, identifiers (IDs), indicators, resource IDs, etc., can also be overridden with each other. In this disclosure, sequences, lists, sets, groups, clusters, subsets, combinations, etc., can also be overridden with each other.

[0371] In this disclosure, SSB, CSI-RS, TRS, SRS, Reference Signal (RS), panel, UE panel, panel group, beam, beam group, precoder, uplink (UL) transmitting entity, Transmission / ReceptionPoint (TRP): transmitting / receiving point, base station, Spatial Relation Information (SRI), spatial relation, SRS Resource Indicator (SRI), Control Resource Set (CORESET), Physical Downlink Shared Channel (PDSCH), Codeword (CW), Transport Block (TB), Reference Signal (RS), Antenna Port (e.g., DeModulation Reference Signal (DMRS)) Port), Antenna Port Group (e.g., DMRS Port Group), Group (e.g., Spatial Relation Group, Code Division Multiplexing (CDM) Group) Division Multiplexing (CDM) groups, reference signal groups, CORESET groups, Physical Uplink Control Channel (PUCCH) groups, PUCCH resource groups, resources (e.g., reference signal resources, SRS resources), resource sets (e.g., reference signal resource sets), CORESET pools, downlink transmission configuration indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, quasi-co-location (QCL) (QCL concept), etc. can also be rewritten.

[0372] In this disclosure, CMR, CRI, SSBRI, beam, beam index, etc., can also be rewritten.

[0373] In this disclosure, CMR groups, TRPs, cells, sub-cells, SRS resource sets, CORESET groups, TCI states, etc., can also be mutually modified. In this disclosure, combinations of multiple CMR groups, TRP groups, cell groups, sub-cell groups, combinations of multiple CORESET groups, combinations of multiple TCI states, etc., can also be mutually modified.

[0374] In this disclosure, the physical scope of a cell, such as a fixed cell, an unchanging cell, a first cell, a super cell, a cell, a macro cell, or a large cell, can be rewritten to each other.

[0375] In this disclosure, the physical range of a cell, a modified cell, a second cell, a sub-cell, a cell, a region, a microcell, a small cell, a second cell within a first cell, etc., can also be rewritten based on conditions and are subject to semi-static / dynamic changes in physical range.

[0376] The first community can also contain more than one second community.

[0377] A second cell can also be included in multiple first cells. Different first cells can also share a second cell.

[0378] Different first cells may or may not overlap.

[0379] In this disclosure, L1-RSRP, L1-SINR, L1-RSRQ, L3-RSRP, L3-SINR, L3-RSRQ, filtered / enhanced L1 measurements, etc., can also be rewritten to each other.

[0380] In this disclosure, DCI, scheduling DCI, UL DCI, UL scheduling DCI, DL DCI, DL scheduling DCI, etc., can also be rewritten to each other.

[0381] The following implementation can also be applied to other scenarios that use more TRPs than those in the existing specifications.

[0382] (Wireless communication method)

[0383] <Implementation Method 0.1>

[0384] This implementation involves the RRC setting (RRC IE, list) of the TCI state.

[0385] For a supercell / cell, at most N Tci Each TCI state can also be set via RRC. Tci It can also be the maximum number of TCI states within the RRC settings.

[0386] N TciIt can also be greater than 128. N Tci It can also follow at least one of the following formulas.

[0387] ◇N Tci =M Tci-perTrp N Trp

[0388] ◇N Tci =M Tci-perCell N Cell

[0389] N Tci N Trp N Cell M Tci-perCell M Tci-perTrp At least one of these can be defined in the specification, provided via RRC, or reported as a UE capability.

[0390] N Trp It can also refer to the number of TRPs accompanying the same PCI or multiple different PCIs within a supercell / cell. N Cell It can also refer to the number of sub-cells accompanying different PCIs within a supercell / cell. M Tci-perTrp It can also refer to the number of TCI states (maximum number) for each TRP of a supercell / cell. M Tci-perCell It can also refer to the number of TCI states (maximum number) of each sub-cell of a supercell / cell.

[0391] <<Application of Hypothesis 2>>

[0392] For the aforementioned assumption 2, at least one of the following features can also be applied.

[0393] ◇ Multiple TCI states set within the RRC settings can also be associated with SSB / CSI-RS of different PCIs.

[0394] ◇Maximum N Cell Different PCIs can also be provided. Compared to the existing NR, N... Cell It can also be greater than 8.

[0395] ◇When N PCIs are provided, the N PCIs may also include a serving cell PCI and N-1 additional PCIs that are different from the serving cell PCI.

[0396] <<RRC Signaling Structure>>

[0397] The RRC signaling structure can also follow at least one of the following options.

[0398] Option 1

[0399] For a supercell / cell, a list of N TCI states is provided. All TCI states in this single list can correspond to different TRPs / subcells, and can be assigned indices from 0 to N-1. Figure 10 In this example, for a supercell / cell, a TCI status list is set. This TCI status list contains N TCI states. Each of the N TCI states has an index (TCI state ID) from 0 to N-1.

[0400] Option 2

[0401] For each TRP of a supercell / cell, a list of multiple TCI states is provided. This option may also follow at least one of the following options 2-x.

[0402] Option 2-1: Across all TCI states of a complete list of all TRPs / subcells for a supercell / cell can also be assigned an index from 0 to N-1 (there are N TCI states). Figure 11 In the example, for a supercell / cell, X TCI state lists #0, #1, ..., #X-1 corresponding to X TRPs / subcells #0, #1, ..., #X-1 (TRP / subcell IDs = 0, 1, ..., X-1) are set. TCI state list #i contains M... i There are Σ TCI states. The total number N of TCI states across TCI state lists #0, #1, ..., #X-1 (TCI state list IDs = 0, 1, ..., X-1) is Σ. i=0 X-1 M i For M in the TCI status list #i i Each TCI state is assigned an index (TCI state ID) Σ k=0 i-1 M k 、(Σ k=0 i- 1 M k )+1、…、(Σ k=0 i-1 M k )+M i The index is -1. For N TCI states in a list of X TCI states, they are assigned indices 0, 1, ..., N-1 respectively.

[0403] Option 2-2: All TCI states within a list of a TRP / subcell for a supercell / cell can also be assigned indices from 0 to M-1 (M TCI states are allowed). Figure 12 In the example, for a supercell / cell, X TCI state lists #0, #1, ..., #X-1 (TCI state list IDs = 0, 1, ..., X-1) corresponding to X TRPs / subcells #0, #1, ..., #X-1 (TRP / subcell IDs = 0, 1, ..., X-1) are set. TCI state list #i contains M... i Each TCI state. For M within the TCI state list #i. i Each TCI state is assigned an index (TCI state ID) 0, 1, ..., M. i -1 index.

[0404] <<Other Application Examples>>

[0405] This implementation can also be applied to situations where the total number of TCI states set for a supercell / cell is less than 128 (the same as the maximum number in the existing NR). Tci (For cases below 128).

[0406] <<Relationship between TRP / subcell and TCI status>>

[0407] The TCI states of the same TRP / subcell can also have a common point.

[0408] UL sending may also follow at least one of the following associations 1-x.

[0409] ◇Association 1-1: UL transmissions using the same TRP / subcell TCI state can also be associated with the same timing advance (TA, timing advance group, TAG). UL transmissions using multiple different TRP / subcell TCI states can also be associated with multiple different TAs (TAGs).

[0410] ◇Association 1-2: UL transmissions using the same TRP / subcell TCI state can also be associated with the same power control parameter set. UL transmissions using multiple different TRP / subcell TCI states can also be associated with multiple different power control parameter sets. A power control parameter set can also contain at least one of P0, alpha (α), and path loss.

[0411] ◇Association 1-3: UL transmissions using the same TRP / subcell TCI state can also be associated with the same SRS resource set used by the codebook / non-codebook. UL transmissions using different TRP / subcell TCI states can also be associated with different SRS resource sets used by the codebook / non-codebook.

[0412] ◇Association 1-4: UL transmissions using the same TRP / subcell TCI state can also be associated with the same scrambling ID. UL transmissions using multiple different TRP / subcell TCI states can also be associated with multiple different scrambling IDs.

[0413] DL sending can also follow at least one of the following associations 2-x.

[0414] ◇Association 2-1: DL transmissions using the same TRP / subcell TCI state can also be associated with the same power control parameter set. DL transmissions using multiple different TRP / subcell TCI states can also be associated with multiple different power control parameter sets. A power control parameter set can also include at least one of the following: SSB transmit power, CSI-RS transmit power offset for SSB, and CSI-RS transmit power.

[0415] ◇Related 2-2: DL transmissions using the same TRP / subcell TCI state can be QCL (quasi-co-located) with respect to several properties, or with respect to several QCL types. The properties can also include at least one of Doppler offset, average delay, Doppler spread, and delay spread. The QCL types can also include at least one of 'Type A', 'Type B', 'Type C', and 'Type D'.

[0416] ◇Association 2-3: DL transmissions using the same TRP / subcell TCI state can also be associated with the same scrambling ID. DL transmissions using multiple different TRP / subcell TCI states can also be associated with multiple different scrambling IDs.

[0417] According to this implementation, even if the cell and TRP associations are changed, the UE can still be properly set / indicated in TCI status.

[0418] <Implementation Method 0.2>

[0419] This implementation involves the transmission of DL / UL for a single TRP / subcell (single TRP transmission).

[0420] <<Number of activated TCI states>>

[0421] For a supercell / cell, or for a BWP in a supercell / cell, the maximum is X. Tci A TCI state can also be activated via MAC CE commands (activate MAC CE, activate command). X Tci It can also be the maximum number of TCI states within the MAC CE command.

[0422] X Tci It can also be greater than 8. X Tci It can also follow at least one of the following formulas.

[0423] ◇X Tci =Y Tci-perTrp N Trp

[0424] ◇X Tci =Y Tci-perCell N Cell

[0425] X Tci N Trp N Cell Y Tci-perCell Y Tci-perTrp At least one of these can be defined in the specification, provided via RRC, or reported as a UE capability.

[0426] N Trp It can also refer to the number of TRPs used for coordinated transmission within a supercell / cell, associated with the same PCI or multiple different PCIs. This coordinated transmission can also be a dynamic handover between these multiple TRPs. N Cell It can also refer to the number of sub-cells within a supercell / cell, each with different PCIs, used for coordinated transmission. This coordinated transmission can also be a dynamic handover between these multiple TRPs. Tci-perTrp It can also refer to the number of TCI states (maximum number) for each TRP of a supercell / cell. Tci-perCell It can also refer to the number of TCI states (maximum number) of each sub-cell of a supercell / cell.

[0427] <<Application of Hypothesis 2>>

[0428] For the aforementioned assumption 2, at least one of the following features can also be applied.

[0429] ◇ Multiple TCI states activated via MAC CE can also be associated with SSB / CSI-RS of different PCIs. Up to N Cell Multiple TCI states of different PCIs can also be activated. Compared to the existing NR, N Cell It can also be greater than 8.

[0430] ◇When multiple TCI states of N PCIs are activated, the N PCIs may include a serving cell PCI and N-1 additional PCIs that are different from the serving cell PCI, or they may be N additional PCIs that are different from the serving cell PCI.

[0431] <<Other Application Examples>>

[0432] This implementation can also be applied to situations where the total number of TCI states activated for a supercell / cell is 8 or less (the same as the maximum number in the existing NR) (the maximum value of the TCI states activated for a supercell / cell X). Tci (For cases below 8).

[0433] <<Activation of TCI State>>

[0434] The mapping between the MAC CE signaling structure, the TCI state activated by MAC CE, and the code points of the TCI field in the DCI can also follow at least one of the following options.

[0435] Option 1

[0436] A MAC CE command activates multiple TCI states across all TRPs / subcells of a supercell / cell. Multiple code points of the TCI field within the DCI can also be individually mapped to the activated TCI states across all TRPs / subcells of a supercell / cell. An increase in activated TCI states can sometimes incur signaling overhead. This option may also have at least one of the following characteristics.

[0437] ―◇In Figure 13 In the example, multiple TCI states across all TRPs / subcells of a supercell / cell are activated via a MAC CE. The multiple activated TCI states (TCI state IDs) 0, 2, 8, ... are respectively mapped to multiple code points 0, 1, 2, ... of the TCI field within the DCI.

[0438] Option 2

[0439] A MAC CE command activates multiple TCI states for a TRP / subcell of a supercell / cell. Multiple code points of the TCI field within the DCI can also be mapped to the multiple activated TCI states for a TRP / subcell of a supercell / cell. This option may also have at least one of the following characteristics.

[0440] ―◇The MAC CE can also contain an index corresponding to the TRP / sub-cell.

[0441] —◇DCI can also indicate the index corresponding to TRP / subcell. This option can also be represented by the following example.

[0442] ―◇In Figure 14 In the example, multiple TCI states for TRP / subcell #0 of a supercell / cell are activated via the first MAC CE. These multiple TCI states (TCI state IDs) 1, 5, ..., 102 are mapped to multiple code points 0, 1, ... of the TCI field within the DCI for TRP / subcell #0. Multiple TCI states for TRP / subcell #1 of the same supercell / cell are activated via the second MAC CE. These multiple TCI states 134, 136, ..., 231 are mapped to multiple code points 0, 1, ... of the TCI field within the DCI for TRP / subcell #1. Multiple TCI states for TRP / subcell #2 of the same supercell / cell are activated via the third MAC CE. These multiple TCI states 267, 277, ..., 387 are mapped to multiple code points 0, 1, ... of the TCI field within the DCI for TRP / subcell #2.

[0443] Option 3

[0444] A MAC CE command activates multiple TCI states for all TRPs / subcells of a supercell / cell. Multiple code points of the TCI field within the DCI can also be mapped to the multiple TCI states activated for a single TRP / subcell of a supercell / cell. This option may also have at least one of the following characteristics.

[0445] —◇The initial Y0 TCI states (first TCI state group #0) within the activated multiple TCI states can also correspond to the first TRP / sub-cell #0 within all TRPs / sub-cells of a supercell / cell. The next Y1 TCI states (second TCI state group #1) within the activated multiple TCI states can also correspond to the second TRP / sub-cell #1 within all TRPs / sub-cells of the supercell / cell.

[0446] —◇DCI can also indicate the index corresponding to TRP / subcell. This option can also be represented by the following example.

[0447] ―◇In Figure 15 In the example, multiple TCI states across all TRPs / subcells of a supercell / cell are activated via a MAC CE. The initial Y0 TCI states (TCI state IDs) 1, 5, ..., 102 within the activated multiple TCI states are mapped to multiple code points 0, 1, ... of the TCI field within the DCI for TRP / subcell #0. The next Y1 TCI states 134, 136, ..., 231 within the activated multiple TCI states are mapped to multiple code points 0, 1, ... of the TCI field within the DCI for TRP / subcell #1. The next Y2 TCI states 267, 277, ..., 387 within the activated multiple TCI states are mapped to multiple code points 0, 1, ... of the TCI field within the DCI for TRP / subcell #2.

[0448] Option 4

[0449] A MAC CE command activates multiple TCI states for a TRP / subcell of a supercell / cell. Multiple code points of the TCI field within the DCI can also be mapped to multiple activated TCI states across all TRPs / subcells of a supercell / cell. This option may also have at least one of the following characteristics.

[0450] —◇The MAC CE can also contain an index corresponding to a TRP / subcell.

[0451] —◇The initial Y0 code points (first code point group #0) within multiple code points of the TCI field in the DCI can also correspond to the first TRP / sub-cell #0 within all TRPs / sub-cells of a supercell / cell. The next Y1 code points (second code point group #1) within multiple code points of the TCI field in the DCI can also correspond to the second TRP / sub-cell #1 within all TRPs / sub-cells of that supercell / cell. This option can also be represented by the following example.

[0452] —◇In Figure 16In the example, Y0 TCI states for TRP / subcell #0 of a supercell / cell are activated via the first MAC CE. These Y0 TCI states (TCI state IDs) 1, 5, ..., 102 are mapped to the initial Y0 code points 0, 1, ..., Y0-1 within multiple code points of the TCI field in the DCI. Y1 TCI states for TRP / subcell #1 of the same supercell / cell are activated via the second MAC CE. These Y1 TCI states 134, 136, ..., 231 are mapped to the next Y1 code points Y0, Y0+1, ..., Y0+Y1-1 within multiple code points of the TCI field in the DCI. Y2 TCI states for TRP / subcell #2 of the same supercell / cell are activated via the third MAC CE. The Y2 TCI states 267, 277, ..., 387 are respectively mapped to the next Y2 code points Y0+Y1, Y0+Y1+1, ..., Y0+Y1+Y2-1 within the multiple code points of the TCI field in the DCI.

[0453] According to this implementation, even if the cell and TRP associations are changed, the UE can be appropriately set / indicated for the TCI status of transmission for a single TRP / subcell (single TRP transmission).

[0454] <Implementation Method 0.3>

[0455] This implementation involves the joint transmission of DL / UL of multiple TRPs / subcells based on a single DCI (joint transmission of multiple TRPs based on a single DCI).

[0456] <<Number of activated TCI states>>

[0457] For a supercell / cell, or for a BWP in a supercell / cell, the maximum is X. Tci A TCI state can also be activated via MAC CE commands (activate MAC CE, activation command). X Tci It can also be the maximum number of TCI states within the MAC CE command.

[0458] X Tci It can also be greater than 16. X Tci It can also follow at least one of the following formulas.

[0459] ◇X Tci =Y Tci-perTrp N Trp

[0460] ◇X Tci =Y Tci-perCell NCell

[0461] ◇X Tci =Y Tci-perTciGroup N TciGroup

[0462] ◇X Tci =Y Tci-perTciGroup N TciGroup-PerTrpGroup N TrpGroup

[0463] ◇X Tci =Y Tci-perTciGroup N TciGroup-PerCellGroup N CellGroup

[0464] X Tci N Trp N Cell Y Tci-perCell Y Tci-perTrp Y Tci-perTciGroup N TciGroup N TciGroup-PerTrpGroup N TrpGroup N TciGroup-PerCellGroup N CellGroup At least one of these can be defined in the specification, provided via RRC, or reported as a UE capability.

[0465] N Trp It can also refer to the number of TRPs used for joint transmission within a supercell / cell, accompanied by the same PCI or multiple different PCIs. Compared to NR, N... Trp It can also be greater than 2. N Cell It can also refer to the number of sub-cells within a supercell / cell used for joint transmission, each accompanied by different PCIs. Tci-perTrp It can also refer to the number of TCI states (maximum number) for each TRP of a supercell / cell. Tci-perCell It can also refer to the number of TCI states (maximum number) of each sub-cell of a supercell / cell.

[0466] Y Tci-perTciGroup A group of TCI states can also be applied to joint transmission. MAC CE can also activate up to N TCI states. TciGroup Groups. Compared to NR, Y Tci-perTciGroup It can be greater than 2, N TciGroup It can also be greater than 8.

[0467] Y Tci-perTciGroupA group of TCI states can also be used for joint transmission. Groups of TRP / subcell states can also be used for joint transmission. MAC CE can also activate up to N TRP states. TrpGroup The TCI states of each group. For each group in the TRP, the N TCI states... TciGroup-PerTrpGroup Individual groups can also be activated. MAC CE can also activate up to N sub-cells. CellGroup The TCI status of each group. For each group in a sub-cell, the N values ​​of the TCI status. TciGroup-PerCellGroup Individual groups can also be activated. For example, there are four TRP groups: {TRP#1, TRP#2}, {TRP#1, TRP#3}, {TRP#2, TRP#4}, and {TRP#3, TRP#4}. For each TRP group, eight TCI state groups are activated, and each TCI state group contains two TCI states, for a total of 64 TCI states activated.

[0468] <<Application of Concept 2>>

[0469] For the aforementioned assumption 2, at least one of the following features can also be applied.

[0470] ◇In NR, multi-TRP joint transmission based on a single DCI using multiple different PCIs is not supported. In this implementation, multi-TRP joint transmission based on a single DCI using multiple different PCIs is supported.

[0471] ◇ Multiple TCI states activated via MAC CE can also be associated with the SSB / CSI-RS of different PCIs. A group of TCI states applied to joint transmissions can also be associated with the SSB / CSI-RS of different PCIs.

[0472] ◇At most N Cell Multiple TCI states of different PCIs can also be activated.

[0473] ◇When multiple TCI states of N PCIs are activated, the N PCIs may include a serving cell PCI and N-1 additional PCIs that are different from the serving cell PCI, or they may be N additional PCIs that are different from the serving cell PCI.

[0474] ◇Changes: Multiple TRPs can also be associated with a single PCI. Multiple TCI states activated via MAC CE can also be associated with the SSB / CSI-RS of different PCIs. A group of TCI states applied to joint transmissions can also be associated with the SSB / CSI-RS of the same PCI.

[0475] <<Other Application Examples>>

[0476] This embodiment can also be applied to the case where the total number of TCI states activated for one supercell / cell is 16 or less (the maximum value X of the TCI states activated for one supercell / cell Tci is 16 or less).

[0477] <<Activation of TCI State>>

[0478] The mapping between the MAC CE signaling structure, the TCI states activated by the MAC CE, and the code points of the TCI field in the DCI can also follow at least one of the following several options.

[0479] ◇ Option 1

[0480] One MAC CE command activates multiple TCI states across all TRPs / sub - cells of one supercell / cell. A field in the DCI (e.g., the TCI field) can also be used for TCI indication. The code point i of the TCI field in the DCI can also be mapped to Yi TCI states activated by the MAC CE. This option can also have at least one of the following several characteristics.

[0481] ―◇ When the code point i is indicated, the corresponding Yi TCI states can also be used for joint transmission. When Yi = 1, transmission of a single TRP / sub - cell using the indicated one TCI state can also be performed.

[0482] ―◇ The Yi TCI states can also correspond to Yi TRPs / sub - cells of one supercell / cell.

[0483] ―◇ Yi can also be 1, 2,..., Ymax.

[0484] ―◇ Ymax can also be the maximum number of TCI states / TRPs / sub - cells for joint transmission.

[0485] ―◇ Different multiple code points can also be mapped to different numbers of TCI states.

[0486] ―◇ The MAC CE can also indicate the number of TCI states to which the code point is mapped. For example, the MAC CE can indicate Yi.

[0487] In Figure 17In this example, the UE receives a MAC CE that activates multiple TCI states across all TRPs / subcells of a supercell / cell, and receives a DCI containing a TCI field. The activated multiple TCI states are grouped into groups of Y0, Y1, ... TCI states. Code point 0 in the TCI field indicates the first Y0 TCI states (TCI state IDs) 0, 133, ..., 301 within the activated multiple TCI states. Code point 1 in the TCI field indicates the next Y1 TCI states 2, 156 within the activated multiple TCI states.

[0488] Option 2

[0489] A MAC CE command activates multiple TCI states for a TRP / subcell of a supercell / cell. Ymax fields within the DCI (e.g., TCI fields) can also be used for TCI indication. A code point in a field within the DCI can also be mapped to a TCI state activated via MAC CE. This option may also have at least one of the following characteristics.

[0490] —◇ Y fields from Ymax fields can also indicate a valid TCI status, and other fields can also indicate code points that are not used. Y can also be 1, 2, ..., Ymax.

[0491] —◇Ymax can also be the maximum number of TCI states / TRPs / subcells used for joint transmission.

[0492] —◇The Y TCI states indicated by the Y fields can also be used for joint transmission. When Y=1, transmission of a single TRP / subcell can also be performed using a single TCI state indicated by one field.

[0493] —◇For example, up to 4 TRPs / subcells can also be used for joint transmission. There are 4 fields in the DCI. One, two, three, or four fields can also indicate a valid TCI status. One, two, three, or four TCI statuses / TRPs / subcells can also be used for joint transmission.

[0494] —◇Change: The Zmax fields within the DCI can also be used for TCI indication. Zmax can also refer to the number of candidate TRPs / subcells. The TRPs / subcells used for joint transmission can also be selected from the candidate TRPs / subcells. Y fields from the Zmax fields can also indicate valid TCI states, and other fields can indicate code points that are not used. Y can also be 1, 2, ..., Ymax. The Y TCI states indicated by the Y fields can also be used for joint transmission. Ymax can also be the maximum number of TCI states / TRPs / subcells used for joint transmission. It can also be Zmax ≥ Ymax. For example, in the case where there are 6 candidate TRPs / subcells and 5 fields within the DCI, a maximum of 4 fields indicate valid TCI states, and a maximum of 4 TRPs / subcells are used for joint transmission.

[0495] ―◇In Figure 18 In the example, the UE receives Y MAC CEs #0, #1, and #2 corresponding to Y=3 TRPs / subcells #0, #1, and #2 (TRP / subcell IDs = 0, 1, and 2) of a supercell / cell, and receives a DCI containing Y TCI fields. Through MAC CE #0 (the first MAC CE), Y0 TCI states for TRP / subcell #0 (the first TRP / subcell) are activated. These Y0 TCI states (TCI state IDs) 1, 5, ..., 102 are mapped to multiple code points 0, 1, ..., Y0-1 of TCI field #0 (the first TCI field) within the DCI. Through MAC CE #1 (the second MAC CE), Y1 TCI states for TRP / subcell #1 (the second TRP / subcell) are activated. The Y1 TCI states 134, 136, ..., 231 are mapped to multiple code points 0, 1, ..., Y1-1 in TCI field #1 (the second TCI field) within the DCI. Through MAC CE#2 (the third MAC CE), the Y2 TCI states for TRP / subcell #2 (the third TRP / subcell) are activated. The Y2 TCI states 267, 277, ..., 387 are mapped to multiple code points 0, 1, ..., Y2-1 in TCI field #2 (the third TCI field) within the DCI.

[0496] Option 3

[0497] A MAC CE command activates multiple TCI states across all TRPs / subcells of a supercell / cell. A field within the DCI (e.g., the TCI field) can also correspond to a TRP / subcell of a supercell / cell. A code point within the DCI can also be mapped to a TCI state activated via MAC CE. This option may also have at least one of the following characteristics.

[0498] ―◇The initial Y0 TCI states (first TCI state group #0) within the multiple TCI states activated by MAC CE can also correspond to the first (#0) TRP / subcell / field, and the next Y1 TCI states (second TCI state group #1) can also correspond to the second (#1) TRP / subcell / field.

[0499] —◇ Y fields from Ymax fields can also indicate a valid TCI status, and other fields can also indicate code points that are not used. Y can also be 1, 2, ..., Ymax.

[0500] —◇Ymax can also be the maximum number of TCI states / TRPs / subcells used for joint transmission.

[0501] —◇The Y TCI states indicated by the Y fields can also be used for joint transmission. When Y=1, transmission of a single TRP / subcell using a single TCI state indicated by that one field can also be performed.

[0502] —◇Changes: The Zmax fields within the DCI can also be used for TCI indication. Zmax can also refer to the number of candidate TRPs / subcells. TRPs / subcells used for joint transmission can also be selected from the candidate TRPs / subcells. Y fields from the Zmax fields can also indicate valid TCI states, and other fields can indicate code points that are not used. Y can also be 1, 2, ..., Ymax. The Y TCI states indicated by the Y fields can also be used for joint transmission. Ymax can also be the maximum number of TCI states / TRPs / subcells used for joint transmission. It can also be Zmax ≥ Ymax. For example, there are 6 candidate TRPs / subcells. There are 5 fields within the DCI. Up to 4 fields indicate valid TCI states, and up to 4 TRPs / subcells are used for joint transmission.

[0503] ―◇In Figure 19In the example, the UE receives a MAC CE that activates multiple TCI states across a supercell / cell (Y=3 TRPs / subcells #0, #1, #2, TRP / subcell IDs=0, 1, 2), and receives a DCI containing Y TCI fields. The initial Y0 TCI states (first TCI state group #0) within the activated multiple TCI states correspond to TRP / subcell #0 (first TRP / subcell). These Y0 TCI states (TCI state IDs) 1, 5, ..., 102 are mapped to multiple code points 0, 1, ..., Y0-1 of TCI field #0 (first TCI field) within the DCI. The next Y1 TCI states (second TCI state group #1) within the activated multiple TCI states correspond to TRP / subcell #1 (second TRP / subcell). The Y1 TCI states 134, 136, ..., 231 are mapped to multiple code points 0, 1, ..., Y1-1 in TCI field #1 (the second TCI field) within the DCI. The next Y2 TCI states (the third TCI state group #2) within the activated multiple TCI states correspond to TRP / subcell #2 (the third TRP / subcell). The Y2 TCI states 267, 277, ..., 387 are mapped to multiple code points 0, 1, ..., Y2-1 in TCI field #2 (the third TCI field) within the DCI.

[0504] Option 4

[0505] A MAC CE command activates multiple TCI states for a TRP / subcell of a supercell / cell. A field within the DCI (e.g., the TCI field) can also be used for TCI indication. The code point i of the TCI field within the DCI can also be mapped to Yi TCI states activated via MAC CE. This option may also have at least one of the following features.

[0506] —◇When code point i is indicated, the corresponding Yi TCI states can also be used for joint transmission. When Yi=1, transmission of a single TRP / subcell using one indicated TCI state can also be performed.

[0507] ―◇Yi TCI states can also correspond to Yi TRPs / subcells of a supercell / cell.

[0508] ―◇Yi can also be 1, 2, ..., Ymax.

[0509] —◇Ymax can also be the maximum number of TCI states / TRPs / subcells used for joint transmission.

[0510] ―◇Different code points can also be mapped to different numbers of TCI states.

[0511] —◇In Figure 20 In the example, the UE receives Y MAC CEs #0, #1, and #2 corresponding to Y=3 TRPs / subcells #0, #1, and #2 (TRP / subcell IDs = 0, 1, and 2) of a supercell / cell, and receives a DCI containing a TCI field. Through MAC CE #0 (the first MAC CE), Y0 TCI states for TRP / subcell #0 (the first TRP / subcell) are activated. These Y0 TCI states (TCI state IDs) 1, 5, ..., 102 are mapped to multiple code points 0, 1, ..., Y0-1 of the TCI field within the DCI. Through MAC CE #1 (the second MAC CE), Y1 TCI states for TRP / subcell #1 (the second TRP / subcell) are activated. These Y1 TCI states 134, 136, ..., 231 are mapped to multiple code points 0, 1, ..., Y1-1 of the TCI field within the DCI. Through MAC CE#2 (the third MAC CE), the Y2 TCI states for TRP / subcell #2 (the third TRP / subcell) are activated. These Y2 TCI states 267, 277, ..., 387 are mapped to multiple code points 0, 1, ..., Y2-1 in the TCI field within the DCI, respectively.

[0512] According to this implementation, even if the association between the cell and TRP is changed, the UE can be appropriately set / indicated for the TCI status of joint transmission of multiple TRPs / subcells based on a single DCI (joint transmission of multiple TRPs based on a single DCI).

[0513] <Implementation Method 0.4>

[0514] This implementation relates to other methods for joint transmission of DL / UL for multiple TRPs / subcells based on a single DCI (joint transmission of multiple TRPs based on a single DCI).

[0515] The TCI indication method can also be the same as the Rel.18 unified TCI framework in NR.

[0516] <<Number of activated TCI states>>

[0517] The UE can also maintain Zmax TCI states at all times. Zmax can also be the number of candidate TRPs / subcells. Multiple TRPs / subcells used for joint transmission can also be selected from multiple candidate TRPs / subcells. For each of DL transmission and UL transmission, it can also be indicated that Y TCI states / TRPs / subcells from Zmax TCI states / TRPs / subcells will be used for joint transmission. In the case of Y=1, transmission of a single TRP / subcell (single TRP transmission) can also be performed. The TCI state can also have at least one of the following characteristics.

[0518] ◇Y can also be 1, 2, ..., Ymax. Ymax can also be the maximum number of TCI states / TRPs / subcells used for joint transmission.

[0519] ◇ Compared to NR, Zmax can also be greater than 2, and Ymax can also be greater than 2.

[0520] For example, in the case where there are 6 candidate TRPs / subcells and a maximum of 4 TRPs / subcells are used for joint transmission, the UE always maintains 6 TCI states and is instructed to use a maximum of 4 TCI states from the 6 TCI states for joint transmission in each of DL transmission and UL transmission.

[0521] MAC CE activation in TCI state can also have at least one of the following characteristics.

[0522] ◇For a supercell / cell, or for a BWP in a supercell / cell, the maximum is X Tci A TCI state can also be activated via MAC CE commands (activate MAC CE, activate command). X Tci It can also be the maximum number of TCI states within the MAC CE command.

[0523] ◇X Tci It can also be greater than 16. X Tci It can also follow at least one of the following formulas.

[0524] ―◇X Tci =Y Tci-perTrp N Trp

[0525] ―◇X Tci =Y Tci-perCell N Cell

[0526] ◇X Tci N Trp N Cell YTci-perCell 、Y Tci-perTrp At least one of them can be defined in the specification, provided by RRC, or reported as UE capabilities.

[0527] ◇N Trp It can also refer to the number of multiple TRPs within a supercell / cell for joint transmission, associated with the same one PCI or multiple different PCIs.

[0528] ◇N Cell It can also refer to the number of multiple sub - cells within a supercell / cell for joint transmission, associated with multiple different PCIs.

[0529] ◇Y Tci-perTrp It can also refer to the number (maximum number) of TCI states for each TRP of a supercell / cell.

[0530] ◇Y Tci-perCell It can also refer to the number (maximum number) of TCI states for each sub - cell of a supercell / cell.

[0531] <<Application to Scenario 2>>

[0532] For the aforementioned Scenario 2, at least one of the following features can also be applied.

[0533] ◇Multiple TCI states activated by MAC CE can also be associated with SSB / CSI - RS of multiple different PCIs.

[0534] ◇At most N Cell multiple TCI states of different PCIs can also be activated.

[0535] ◇When multiple TCI states of N PCIs are activated, the N PCIs can also include one serving cell PCI and N - 1 additional PCIs different from the serving cell PCI, or N additional PCIs different from the serving cell PCI.

[0536] <<Other Application Examples>>

[0537] This embodiment can also be applied to the following situation, that is, when the total number of TCI states activated for one supercell / cell is 16 or less (the maximum value X Tci of the TCI states activated for one supercell / cell is 16 or less).

[0538] <<Activation / Update of TCI States>>

[0539] The mapping between the MAC CE signaling structure, the TCI state activated by the MAC CE, and the code points of the TCI field in the DCI can also follow at least one of the following options. The signal structure is the same as in Implementation 0.3, but the interpretation of the signal is different from that in Implementation 0.3.

[0540] Option 1

[0541] A MAC CE command activates multiple TCI states across all TRPs / subcells of a supercell / cell. A field within the DCI (e.g., the TCI field) can also be used for TCI indication. The code point i of the TCI field within the DCI can also be mapped to the Zi TCI states activated via MAC CE. This option may also have at least one of the following features.

[0542] —◇When code point i is indicated, Zi TCI states from Zmax TCI states can also be updated. Other TCI states can also remain unchanged and be maintained.

[0543] ―◇Zi TCI states can also correspond to Zi TRPs / subcells of a supercell / cell.

[0544] ―◇Zi can also be 1, 2, ..., Zmax.

[0545] ―◇Different code points can also be mapped to different numbers of TCI states.

[0546] ―◇MAC CE can also indicate the number of TCI states to which a code point is mapped. For example, MAC CE can also indicate Zi.

[0547] Option 2

[0548] A MAC CE command activates multiple TCI states for a TRP / subcell of a supercell / cell. Zmax fields within the DCI (e.g., TCI fields) can also be used for TCI indication. A field can also correspond to a candidate TRP / subcell. A code point of a field can also be mapped to a TCI state activated via MAC CE. This option can also have at least one of the following characteristics.

[0549] —◇The Z fields from the Zmax fields can also indicate a valid TCI status, and the other fields can also indicate code points that are not used. Z can also be 1, 2, ..., Zmax.

[0550] —◇The Z TCI states indicated by Z fields can also be updated. Other TCI states can also be maintained without being changed.

[0551] Option 3

[0552] A MAC CE command activates multiple TCI states across all TRPs / subcells of a supercell / cell. Zmax fields within the DCI (e.g., TCI fields) can also be used for TCI indication. A field can also correspond to a TRP / subcell of a supercell / cell. A code point of a field can also be mapped to a TCI state activated via MAC CE. This option can also have at least one of the following characteristics.

[0553] ―◇The initial Y0 TCI states (first TCI state group #0) within the multiple TCI states activated by MAC CE can also correspond to the first (#0) TRP / subcell / field, and the next Y1 TCI states (second TCI state group #1) can also correspond to the second (#1) TRP / subcell / field.

[0554] —◇The Z fields from the Zmax fields can also indicate a valid TCI status, and the other fields can also indicate code points that are not used. Z can also be 1, 2, ..., Zmax.

[0555] —◇The Z TCI states indicated by Z fields can also be updated. Other TCI states can also be maintained without being changed.

[0556] Option 4

[0557] A MAC CE command activates multiple TCI states for a TRP / subcell of a supercell / cell. A field within the DCI (e.g., the TCI field) can also be used for TCI indication. The code point i of the TCI field within the DCI can also be mapped to the Zi TCI states activated via MAC CE. This option may also have at least one of the following features.

[0558] —◇When code point i is indicated, Zi TCI states from Zmax TCI states can also be updated. Other TCI states can also remain unchanged and be maintained.

[0559] ―◇Zi TCI states can also correspond to Zi TRPs / subcells of a supercell / cell.

[0560] ―◇Zi can also be 1, 2, ..., Zmax.

[0561] ―◇Different code points can also be mapped to different numbers of TCI states.

[0562] exist Figure 21In the example, the UE maintains an active TCI state for Zmax=6. Subsequently, the UE receives a DCI containing Zmax TCI fields. The second TCI field within the Zmax TCI fields indicates a valid TCI state. The UE updates the TCI state of the second TRP / subcell #1 (TRP / subcell ID=1) to the indicated valid TCI state.

[0563] exist Figure 22 In the example, the UE maintains Zmax=6 active TCI states. Subsequently, the UE receives a DCI containing Zmax TCI fields. The second and fourth TCI fields within the Zmax TCI fields indicate valid TCI states. The UE updates the TCI states of the second TRP / subcell #1 (TRP / subcell ID=1) and the fourth TRP / subcell #3 to the indicated two valid TCI states, respectively.

[0564] exist Figure 23A In the example, the UE maintains Zmax=6 active TCI states. Subsequently, the UE receives an indication (e.g., DCI) to use Y=2 TRP / subcell / TCI states from the Zmax candidate TRP / subcell / TCI states for transmission. The UE uses the indicated second and third TRP / subcell / TCI states #1 and #2 (TRP / subcell IDs=1 and 2) for joint transmission.

[0565] exist Figure 23B In the example, the UE maintains Zmax=6 active TCI states. Subsequently, the UE receives an indication (e.g., DCI) to use Y=4 TRP / subcell / TCI states from the Zmax candidate TRP / subcell / TCI states for transmission. The UE will use the indicated first, second, fourth, and sixth TRP / subcell / TCI states #0, #1, #4, #6 (TRP / subcell IDs = 0, 1, 4, 6) for joint transmission.

[0566] exist Figure 23C In the example, the UE maintains Zmax=6 active TCI states. Subsequently, the UE receives an indication (e.g., DCI) to use Y=1 TRP / subcell / TCI states from the Zmax candidate TRP / subcell / TCI states for transmission. The UE will use the indicated second TRP / subcell / TCI state #1 (TRP / subcell ID=1) for transmission of a single TRP / subcell.

[0567] According to this implementation, even if the association between the cell and the TRP is changed, the UE can still be properly set / indicated for the TCI status of a single or multiple TRPs / sub-cells.

[0568] <Embodiment 0.5>

[0569] This embodiment relates to the joint transmission of DL / UL for multiple TRPs / sub-cells based on multiple DCIs (multi-TRP joint transmission based on multiple DCIs).

[0570] It is also possible to define groups / pools of CORESETs (CORESET groups, CORESET pools, CORESETPoolIndex) in the same way as in NR. MAC CE commands can also activate the TCI states of each CORESET group. Multiple code points of the TCI field in DCI can also be respectively mapped to multiple TCI states for the corresponding CORESET group.

[0571] In the present disclosure, a CORESET group can also be a set of resources for DCI monitoring. For example, it can also be a group of search spaces / search space sets.

[0572] <<Relationship between CORESET group and TRP / sub-cell>>

[0573] The relationship between the CORESET group and the TRP / sub-cell can also follow at least one of the following several options.

[0574] ◇ Option 1

[0575] One CORESET group is mapped to one TRP / sub-cell of one supercell / cell. The UE can also receive multiple DCIs (multi-DCIs) respectively within multiple CORESET groups (CORESETs within multiple CORESET groups). It is also possible to perform joint transmission of multiple TRPs / sub-cells based on multiple DCIs (multi-TRP joint transmission based on multiple DCIs). This option can also have at least one of the following several characteristics.

[0576] ―◇ Compared with NR, more than two CORESET groups can also be set by RRC.

[0577] ―◇ For one CORESET group, or for one supercell / cell, or for one BWP of one supercell / cell, at most X Tci TCI states can also be activated by MAC CE commands (activation MAC CE, activation command).

[0578] ―◇ One field in DCI (e.g., TCI field) can also be used for TCI indication. One code point of the TCI field can be mapped to one TCI state.

[0579] ―◇ For one supercell / cell, or for one BWP of one supercell / cell, overall, at most X can be activatedTci N CORESET-Group A maximum of X TCI states can be activated. Tci N Trp Each TCI state can be activated up to X times. Tci N Cell Each TCI state. Each parameter may also follow at least one of the following characteristics.

[0580] ――◇N Trp It can also refer to the number of TRPs used to coordinate transmission / joint transmission within a supercell / cell, accompanied by the same PCI or multiple different PCIs. Compared to NR, N... Trp It can also be greater than 2.

[0581] ――◇N Cell It can also refer to the number of supercells / subcells within a cell that are used to coordinate transmission / joint transmission and that have multiple different PCIs.

[0582] ――◇N CORESET-Group It can also refer to the number of CORESET groups used for coordinating transmissions / joint transmissions. Compared to NR, N... CORESET-Group It can also be greater than 2.

[0583] ――◇X Tci N Trp N Cell N CORESET-Group At least one of these can be defined in the specification, provided via RRC, or reported as a UE capability.

[0584] —◇For the aforementioned assumption 2, at least one of the following features can also be applied.

[0585] —◇ Multiple TCI states activated by MAC CE for a CORESET group can also be associated with the SSB / CSI-RS of the same PCI.

[0586] —◇For a supercell / cell, with a maximum of N Cell Multiple TCI states associated with a single PCI can also be activated. Compared to NR, N... Cell It can also be greater than 2.

[0587] ――◇When multiple TCI states of N PCIs are activated, the N PCIs may include a serving cell PCI and N-1 additional PCIs that are different from the serving cell PCI, or they may be N additional PCIs that are different from the serving cell PCI.

[0588] ―◇In Figure 24 In the example, the UE receives Y MAC CEs #0, #1, and #2 corresponding to Y=3 CORESET groups / TRPs / subcells #0, #1, and #2 (CORESET group / TRP / subcell IDs = 0, 1, and 2) within a supercell / cell, and receives DCIs within each CORESET group. Each DCI contains a TCI field. Through MAC CE #0 (the first MAC CE), Y0 TCI states for CORESET group / TRP / subcell #0 (the first CORESET group / TRP / subcell) are activated. These Y0 TCI states (TCI state IDs) 1, 5, ..., 102 are mapped to multiple code points 0, 1, ..., Y0-1 in the TCI field within the DCI of CORESET group #0. Through MAC CE #1 (the second MAC CE), Y1 TCI states for CORESET group / TRP / subcell #1 (the second CORESET group / TRP / subcell) are activated. The Y1 TCI states 134, 136, ..., 231 are mapped to multiple code points 0, 1, ..., Y1-1 in the TCI field of the DCI within CORESET group #1. Through MAC CE #2 (the third MAC CE), the Y2 TCI states for CORESET group / TRP / subcell #2 (the third CORESET group / TRP / subcell) are activated. The Y2 TCI states 267, 277, ..., 387 are mapped to multiple code points 0, 1, ..., Y2-1 in the TCI field of the DCI within CORESET group #2.

[0589] Option 2

[0590] A CORESET group is mapped to multiple TRPs / subcells of a supercell / cell. Transmission of a single TRP / subcell can also be performed alongside dynamic TRP / subcell handover based on DCI within a CORESET group. This option may also have at least one of the following features.

[0591] —◇ Compared to NR, more than two CORESET groups can also be set via RRC.

[0592] —◇For a supercell / cell, or a CORESET group in a BWP of a supercell / cell, a maximum of X Tci A TCI state can also be activated via MAC CE. X Tci It can also follow at least one of the following formulas.

[0593] ――◇XTci = Y Tci-perTrp N Trp

[0594] ――◇X Tci = Y Tci-perCell N Cell

[0595] Each parameter may also follow at least one of the following characteristics.

[0596] ――◇N Trp It can also refer to the number of TRPs associated with the same CORESET group of the supercell / cell used for coordinated transmission, accompanied by the same PCI or multiple different PCIs. Coordinated transmission can also use N-based methods. Trp A TRP that dynamically switches between TRPs.

[0597] ――◇N Cell It can also refer to the number of multiple sub-cells associated with the same CORESET group of the supercell / cell used for coordinated transmission, each with different PCIs. Coordinated transmission can also use N-based methods. Cell A TRP for dynamic handover between individual cells.

[0598] ――◇Y Tci-perTrp It can also refer to the number of TCI states (maximum number) for each TRP of a supercell / cell. Tci-perCell It can also refer to the number of TCI states (maximum number) of each sub-cell of a supercell / cell.

[0599] —◇For a supercell / cell, or for a BWP within a supercell / cell, the total value is at most X. Tci N CORESET-Group Each TCI state can also be activated. N CORESET-Group It can also refer to the number of CORESET groups in a supercell / cell or in a BWP of a supercell / cell.

[0600] ――◇X Tci N Trp N Cell Y Tci-perTrp Y Tci-perCell N CORESET-Group At least one of these can be defined in the specification, provided via RRC, or reported as a UE capability.

[0601] —◇For the aforementioned assumption 2, at least one of the following features can also be applied.

[0602] —◇ Multiple TCI states activated by MAC CE for a CORESET group can also be associated with SSB / CSI-RS of different PCIs.

[0603] —◇For a CORESET group, with at most N Cell Multiple TCI states associated with different PCIs can also be activated.

[0604] —◇For a supercell / cell, multiple TCI states associated with up to N different PCIs can also be activated. N can be any number of different PCIs. Cell It can also be N Cell N CORESET-Group .

[0605] ――◇When multiple TCI states of N PCIs are activated, the N PCIs may include a serving cell PCI and N-1 additional PCIs that are different from the serving cell PCI, or they may be N additional PCIs that are different from the serving cell PCI.

[0606] Option 3

[0607] A CORESET group is mapped to multiple TRPs / subcells of a supercell / cell. Joint transmission of multiple TRPs / subcells based on a single DCI within a CORESET group is also possible (multi-TRP joint transmission based on a single DCI). This option may also have at least one of the following features.

[0608] —◇ Compared to NR, more than two CORESET groups can also be set via RRC.

[0609] —◇For a supercell / cell, or a CORESET group in a BWP of a supercell / cell, a maximum of X Tci A TCI state can also be activated via MAC CE. X Tci It can also follow at least one of the following formulas.

[0610] ――◇X Tci =Y Tci-perTrp N Trp

[0611] ――◇X Tci =Y Tci-perCell N Cell

[0612] ――◇XTci =Y Tci-perTciGroup N TciGroup

[0613] ――◇X Tci =Y Tci-perTciGroup N TciGroup-perTrpGroup N TrpGroup

[0614] ――◇X Tci =Y Tci-perTciGroup N TciGroup-perCellGroup N CellGroup

[0615] Each parameter may also follow at least one of the following characteristics.

[0616] ――◇N Trp It can also refer to the number of TRPs associated with the same CORESET group of the supercell / cell used for joint transmission, accompanied by the same PCI or multiple different PCIs.

[0617] ――◇N Cell It can also refer to the number of multiple sub-cells associated with the same CORESET group used for joint transmission, and accompanied by multiple different PCIs.

[0618] ――◇Y Tci-perTrp It can also refer to the number of TCI states (maximum number) for each TRP of a supercell / cell. Tci-perCell It can also refer to the number of TCI states (maximum number) of each sub-cell of a supercell / cell.

[0619] —◇For joint transmissions, Y can also be applied Tci-perTciGroup A group of TCI states. MAC CE can also activate N TCI states. TciGroup Groups. Compared to NR, then Y Tci-perTciGroup It can also be greater than 2.

[0620] —◇For joint transmissions, Y can also be applied Tci-perTciGroup A group of TCI states. A group of TRP / subcell states can also be used for joint transmission. MAC CE can also activate N for TRP. TrpGroup The TCI states of each group. For each group in the TRP, the N TCI states... TciGroup-perTrpGroup Individual groups can also be activated. MAC CE can also activate N for sub-cells. CellGroup The TCI status of each group. For each group in a sub-cell, the N values ​​of the TCI status.TciGroup-perCellGroup Individual groups can also be activated.

[0621] —◇For a supercell / cell, or for a BWP within a supercell / cell, the total value is at most X. Tci N CORESET-Group Each TCI state can also be activated. N CORESET-Group It can also refer to the number of CORESET groups in a supercell / cell or in a BWP of a supercell / cell.

[0622] ――◇X Tci N Trp N Cell Y Tci-perTrp Y Tci-perCell N CORESET-Group Y Tci-perTciGroup N TciGroup N TciGroup-perTrpGroup N TrpGroup N TciGroup-perCellGroup N CellGroup At least one of these can be defined in the specification, provided via RRC, or reported as a UE capability.

[0623] —◇For the aforementioned assumption 2, at least one of the following features can also be applied.

[0624] —◇ Multiple TCI states activated for a CORESET group via MAC CE can also be associated with SSB / CSI-RS of different PCIs. Groups of TCI states applied to joint transmissions based on a single DCI can also be associated with SSB / CSI-RS of different PCIs.

[0625] —◇For a CORESET group, with at most N Cell Multiple TCI states associated with different PCIs can also be activated.

[0626] —◇For a supercell / cell, multiple TCI states associated with up to N different PCIs can also be activated. N can be any number of different PCIs. Cell It can also be N Cell N CORESET-Group .

[0627] ――◇When multiple TCI states of N PCIs are activated, the N PCIs may include a serving cell PCI and N-1 additional PCIs that are different from the serving cell PCI, or they may be N additional PCIs that are different from the serving cell PCI.

[0628] —◇Changes: Multiple TRPs can also be associated with a single PCI. Multiple TCI states activated for a CORESET group via MAC CE can also be associated with the SSB / CSI-RS of different PCIs. A group of TCI states applied to joint transmissions based on a single DCI can also be associated with the SSB / CSI-RS of the same PCI.

[0629] --◇Changes: Multiple TRPs can also be associated with a single PCI. Multiple TCI states activated for a CORESET group via MAC CE can also be associated with the SSB / CSI-RS of the same PCI. A group of TCI states applied to joint transmissions based on a single DCI can also be associated with the SSB / CSI-RS of the same PCI.

[0630] <<Application of Other Implementation Methods>>

[0631] The mapping between the MAC CE signaling structure, the TCI state activated by MAC CE, and the code points of the TCI field in the DCI can also be adapted to implementation 0.2 / 0.3 / 0.4 by applying implementation 0.2 / 0.3 / 0.4 to each CORESET group.

[0632] According to this implementation, even if the association between the cell and the TRP is changed, the UE can be properly set / indicated for the TCI status of a single or multiple TRPs / sub-cells based on a single DCI or multiple DCIs.

[0633] <Implementation Method 0.6>

[0634] This implementation involves MAC CE overhead.

[0635] To reduce MAC CE overhead, the following methods may also be applied to at least one of embodiments 0.1 to 0.5.

[0636] <<Update of a subset of activated TCI states>>

[0637] The MAC CE command (activate MAC CE, activation command) can also update a subset of TCI states for a supercell / cell, or for a TRP / subcell of a supercell / cell. Other TCI states activated by previous MAC CE commands can also be maintained. This implementation can also follow at least one of the following options.

[0638] Option 1

[0639] A subset of activated TCI states can also be replaced by a new subset of activated TCI states. Figure 25 In the example, the MAC CE indicates the TCI states (TCI state IDs) 10, 12, and 43 for the third, fourth, and fifth TCI states (corresponding to TCI states of code points 2, 3, and 4) within the multiple active TCI states. In response to the reception of this MAC CE, the UE updates the indicated active TCI state and maintains (does not update) the active TCI states other than the indicated TCI state.

[0640] Option 2

[0641] A subset of activated TCI states can also be updated to deactivated (released). Figure 26 In the example, the MAC CE indicates the deactivation of the third, fourth, and fifth TCI states (corresponding to TCI states at code points 2, 3, and 4) within a plurality of activated TCI states. In response to the reception of the MAC CE, the UE deactivates the indicated TCI state and maintains the active TCI states other than the indicated TCI state.

[0642] Option 3

[0643] Alternatively, a new subset of TCI states may be activated, while previously activated TCI states remain active. Figure 27 In the example, the MAC CE indicates TCI states (TCI state IDs) 120, 201, and 222. In response to the reception of this MAC CE, the UE appends the indicated TCI state (associates the indicated TCI state with the appended code point) and maintains active TCI states other than the indicated TCI state.

[0644] <<Subset Instructions>>

[0645] The subset directive can also follow at least one of the following alternatives.

[0646] ◇Option 1

[0647] MAC CE indicates a subset of TCI states. For example, MAC CE can also indicate a subset of TCI states that includes the (i+1)th activated TCI state, or a subset of TCI states that includes the (i+1)th to (#i+L)th activated TCI states, or a subset of TCI states that includes the {i+1, j+1, k+1, ...}th activated TCI states.

[0648] ◇Option 2

[0649] The MAC CE indicates a subset of code points. For example, the MAC CE can also indicate the (i+1)th code point i, or code points i from (i+1)th to (#i+L)th to i+L-1, or the {i+1, j+1, k+1, ...}th code point {i, j, k, ...}. The subset of TCI states mapped to the indicated subset of code points can also be updated.

[0650] According to this implementation, even if the association between the cell and TRP is changed, the UE can be properly set / indicated in TCI state while suppressing overhead.

[0651] <Implementation Method 0.7>

[0652] This implementation involves non-group-based beam reporting.

[0653] In this disclosure, the index / ID of multiple [CMR groups / TRPs / subcells] can also be replaced by the index / ID of a combination of [[CMR groups / TRPs / subcells]]. In this disclosure, the index / ID of a combination of [[CMR groups / TRPs / subcells]] can also be associated / mapped with the index / ID of multiple [CMR groups / TRPs / subcells].

[0654] [Implementation Method 0.7.1]

[0655] In the case of non-group-based beam reporting, multiple groups (e.g., X CMR groups) of multiple CMRs (SSB / CSI-RS) can be configured for CSI resource settings used for channel measurements / reporting based on L1-RSRP / L1-SINR beam measurements / reporting. Each CMR group can also contain the same number of CMRs. For example, each CMR group can also contain Y CMRs (or Y CMRs can be configured per CMR group). The UE can also select / report M CMR groups, where each CMR group contains N CMRs. In other words, the UE can also select / report M×N CMRs from multiple CMRs within M CMR groups.

[0656] The aforementioned X / Y / M / N values ​​can be set via RRC signaling or specified through a standard. Furthermore, the maximum values ​​of X / Y / M / N can be specified through a standard or reported to the base station via UE capability information.

[0657] A CMR group can also refer to a TRP / subcell. In other words, CMR groups, TRPs, and subcells can be interchanged. The base station can also be configured for beam measurements of multiple TRPs / subcells (X TRPs / subcells), where each TRP / subcell has multiple beams (Y beams). The UE can also select / report the optimal N beams for each of the optimal M TRPs / subcells.

[0658] Figure 28A and 28B This is a diagram representing a CMR group and an example of CMR. In Figure 28A In this example, five CMR groups are set up (CMR groups 1-5), and the same number (four in this example) of CMRs are set up for each CMR group.

[0659] UE from Figure 28A Within multiple CMR groups and multiple CMRs, select / report more than one CMR group and more than one CMR. Figure 28B In the middle, UE from Figure 28A Select / report 4 CMR groups (CMR groups 1, 2, 4, 5) from the 5 CMR groups (CMR groups 1-5), and select / report one CMR from the 4 CMRs contained in each of the 4 CMR groups (CMR groups 1, 2, 4, 5) for each CMR group.

[0660] In the CMR settings, the CMR group ID can also be explicitly set. In this case, the CMR group ID can also be associated with the corresponding TRP / subcell ID.

[0661] In CMR settings, the CMR group ID may not be explicitly set. In this case, the CMR group can also be identified by the ID of the corresponding TRP / sub-cell.

[0662] CMRs contained in different CMR groups can also be sent simultaneously over the network.

[0663] According to this implementation, the UE can appropriately select / report CMR.

[0664] [Implementation Method 0.7.2]

[0665] In the case of non-group-based beam reporting, multiple groups (e.g., X CMR groups) of multiple CMRs (SSB / CSI-RS) can be configured for CSI resource settings used for channel measurements / reporting based on L1-RSRP / L1-SINR beam measurements / reporting. Each CMR group can also contain a different number of CMRs. The maximum number of CMRs configured per CMR group can be specified by the specification or determined based on UE capabilities. The maximum number of CMRs configured across multiple / all CMR groups can be specified by the specification or determined based on UE capabilities. The UE can also select / report K CMRs from all configured CMR groups (in other words, across all configured CMR groups). The maximum number of CMRs reported per CMR group can be specified by the specification, set by RRC signaling, or determined based on UE capabilities. The maximum number of CMRs reported across multiple / all CMR groups can be specified by the specification, set by RRC signaling, or determined based on UE capabilities.

[0666] The aforementioned X / K can be set via RRC signaling or specified through a standard. Furthermore, the maximum value of the aforementioned X / K can be specified through a standard or reported to the base station via UE capability information.

[0667] A CMR group can also refer to a TRP. In other words, CMR groups and TRPs can be interchanged. When the number of beams set for each TRP is different, the base station can also set only the total number of reported CMRs for the reporting settings.

[0668] Figure 29A and 29B This is a diagram representing a CMR group and an example of CMR. In Figure 29A In this configuration, five CMR groups are defined (CMR groups 1-5), and at least one CMR is assigned to each CMR group. The number of CMRs assigned to each CMR group can be the same or different.

[0669] UE from in Figure 29A Within a set of multiple CMR groups, select / report one or more CMR groups and one or more CMRs. Figure 29B In the middle, UE from in Figure 29A Select / report 3 CMR groups (CMR groups 1, 2, 4) from the 5 CMR groups (CMR groups 1-5) set in the middle, and select / report a total of 4 CMRs from the multiple (here, 8) CMRs contained in the 3 CMR groups (CMR groups 1, 2, 4).

[0670] In the CMR settings, the CMR group ID can also be explicitly set. In this case, the CMR group ID can also be associated with the ID of the corresponding TRP.

[0671] In the CMR settings, the CMR group ID may not be explicitly set. In this case, the CMR group can also be identified by the ID of the corresponding TRP.

[0672] According to this implementation, the UE can appropriately select / report CMR.

[0673] [Implementation Method 0.7.3A]

[0674] In the case of non-group-based beam reporting, multiple groups (e.g., X CMR groups) of multiple CMRs (SSB / CSI-RS) can be configured for CSI resource settings used for channel measurements / reporting based on L1-RSRP / L1-SINR beam measurements / reporting. Each CMR group can also contain the same number of CMRs. For example, Y CMRs can be configured per CMR group (each CMR group can also contain Y CMRs). The UE can also select / report K CMRs from all configured CMR groups (in other words, across all configured CMR groups). The maximum number of CMRs reported per CMR group can be specified by the specification, set by RRC signaling, or determined based on the UE's capabilities. The maximum number of CMRs reported across multiple / all CMR groups (the maximum value of K) can be specified by the specification, set by RRC signaling, or determined based on the UE's capabilities.

[0675] The aforementioned X / Y / K values ​​can be set via RRC signaling or specified through a standard. Furthermore, the maximum values ​​of X / Y / K can be specified through a standard or reported to the base station via UE capability information.

[0676] Figure 30A and 30B This is a diagram representing a CMR group and an example of CMR. In Figure 30A In this example, five CMR groups are set up (CMR groups 1-5), and the same number (four in this example) of CMRs are set up for each CMR group.

[0677] UE from in Figure 30A Within a set of multiple CMR groups, select / report one or more CMR groups and one or more CMRs. Figure 30B In the middle, UE from in Figure 30ASelect / report 3 CMR groups (CMR groups 1, 2, 4) from the 5 CMR groups (CMR groups 1-5) set in the middle, and select / report a total of 4 CMRs from the multiple (here, 12) CMRs contained in the 3 CMR groups (CMR groups 1, 2, 4).

[0678] According to this implementation, the UE can appropriately select / report CMR.

[0679] [Implementation Method 0.7.3B]

[0680] In the case of non-group-based beam reporting, multiple groups (e.g., X CMR groups) of multiple CMRs (SSB / CSI-RS) can be configured for CSI resource settings used for channel measurements / reporting based on L1-RSRP / L1-SINR beam measurements / reporting. Each CMR group can also contain a different number of CMRs. The UE can also select / report M CMR groups, where each CMR group contains N CMRs. In other words, the UE can also select / report M×N CMRs from multiple CMRs within M CMR groups. The maximum number of CMRs (N) configured per CMR group can be specified by the specification or determined based on the UE's capabilities. The maximum number of CMRs (M×N) configured across multiple / all CMR groups can be specified by the specification or determined based on the UE's capabilities. N can also be less than the number of CMRs configured in the CMR group with the fewest configured CMRs among the configured CMR groups.

[0681] The aforementioned X / M / N can be set via RRC signaling or specified via a standard. Furthermore, the maximum value of the aforementioned X / M / N can be specified via a standard or reported to the base station via UE capability information.

[0682] Figure 31A and 31B This is a diagram representing a CMR group and an example of CMR. In Figure 31A In this configuration, five CMR groups are defined (CMR groups 1-5), and at least one CMR is assigned to each CMR group. The number of CMRs assigned to each CMR group can be the same or different.

[0683] UE from in Figure 31A Within a set of multiple CMR groups, select / report one or more CMR groups and one or more CMRs. Figure 31B In the middle, UE from in Figure 31ASelect / report 4 CMR groups (CMR groups 1, 2, 4, 5) from the 5 CMR groups (CMR groups 1-5) set in the middle, and select / report one CMR for each CMR group from the multiple (here, 10) CMRs contained in the 4 CMR groups (CMR groups 1, 2, 4, 5).

[0684] According to this implementation, the UE can appropriately select / report CMR.

[0685] [Implementation Method 0.7.4]

[0686] Limitations can also be set for at least one of the configured CMRs for each CMR group (in other words, within the same CMR group) and the configured CMRs for different CMR groups. These limits may also rely on at least one of the UE capability reports and network settings.

[0687] You can also set a limitation related to the type / category of the reference signal. This limitation can be either Option 1 or Option 2 below.

[0688] Option 1: The reference signal type is the same for multiple CMRs in all CMR groups.

[0689] Option 2: The reference signals used for multiple CMRs in one CMR group are of the same type; the reference signals used for multiple CMRs in different CMR groups are of the same or different types.

[0690] Regarding option 1, for example, in a reporting setting, as a reference signal for multiple CMRs in all CMR groups, either SSB or CSI-RS can be used alone.

[0691] Regarding option 2, for example, as a reference signal for multiple CMRs in the first CMR group, only one of SSB or CSI-RS may be used. In this case, as a reference signal for multiple CMRs in the second CMR group, only one of SSB or CSI-RS may be used.

[0692] You can also set restrictions related to the Physical Cell ID (Physical Cell Identifier (PCI)). This restriction can also be at least one of the following options 1 to 3.

[0693] Option 1: Associate multiple CMRs within a CMR group with the same PCI.

[0694] Option 2: In the case of intra-cell, multiple CMRs from different CMR groups are associated with the same PCI.

[0695] Option 3: In the case of inter-cell, multiple CMRs from different CMR groups are associated with the same or different PCIs.

[0696] Restrictions related to the QCL source RS can also be set. When multiple CSI-RSs are set as multiple CMRs, the QCL source RSs of multiple CMRs within a CMR group can also be restricted to the same SSB.

[0697] You can also set restrictions related to Timing Advance (TA) / Timing Advance Group (TAG). This restriction can be either Option 1 or Option 2 below.

[0698] Option 1: Multiple CMRs within a CMR group (or multiple TCI states associated with multiple CMRs within a CMR group) are associated with the same TA / TAG. Multiple CMRs from different CMR groups (or multiple TCI states associated with multiple CMRs from different CMR groups) are associated with different TA / TAGs.

[0699] Option 2: Associate all CMRs in different CMR groups (or multiple TCI states associated with multiple CMRs in different CMR groups) with the same TA / TAG.

[0700] You can also set a limit related to the offset value of TA (e.g., n-TimingAdvanceOffset). This limit can also be at least one of the following options 1 through 3.

[0701] Option 1: Set an offset value for the TA for each CMR group. In this case, the offset value of the TA can be the same or different across multiple CMR groups.

[0702] Option 2: Set a single offset value for the TA for all CMR groups. In this case, the TA offset value is the same / common across all CMR groups.

[0703] Option 3: In the case of inter-cell, set an offset value for each TA per PCI and / or per TAG.

[0704] You can also set a limit related to DL reference timing. This limit can also be at least one of the following options 1 to 3.

[0705] Option 1: Set / support one DL reference timing per CMR group. In this case, the DL reference timing can be the same or different across multiple CMR groups.

[0706] Option 2: Set / support a single DL reference timing for all CMR groups. In this case, the DL reference timing is the same / common across all CMR groups.

[0707] Option 3: In the case of inter-cell, set / support one DL reference timing per PCI and / or per TAG.

[0708] Limitations related to the DL path loss reference signal (PL-RS) can also be set. The UE may also not expect more than one SSB / CSI-RS from a CMR group to be set as PL-RS.

[0709] Limitations related to the DL Radio Link Monitoring Reference Signal (RLM-RS) can also be set. The UE may also not expect more than one SSB / CSI-RS from a CMR group to be set as RLM-RS.

[0710] Limitations can also be set related to the DL beam failure detection reference signal (BeamFailure Detection Reference Signal (BFD-RS)). The UE may also not expect more than one SSB / CSI-RS from a CMR group to be set as BFD-RS.

[0711] [Implementation Method 0.7.5]

[0712] When L1-SINR is set to report quantity, ZP-IMR can also be set to at least one of the following options 1-1 to 1-3.

[0713] Option 1-1: ZP-IMR and CMR are mapped one-to-one.

[0714] • Option 1-2: A ZP-IMR that is set publicly (commonly) is set for all CMRs.

[0715] • Options 1-3: A publicly set ZP-IMR is set for each CMR group.

[0716] In option 1-1 above, a ZP-IMR can also be set for each CMR.

[0717] In options 1-3 above, it is also possible to apply a commonly set ZP-IMR to multiple CMRs within a CMR group, or to apply the same / different ZP-IMR to multiple CMRs within different CMR groups.

[0718] Whether L1-SINR measurement / reporting is supported, and whether the above options 1-1 / 1-2 / 1-3 are supported, may also depend on at least one of the UE capabilities and settings made over the network.

[0719] When L1-SINR is set to the report quantity, NZP-IMR can also be set to at least one of the following options 2-1 to 2-3.

[0720] Option 2-1: NZP-IMR is mapped one-to-one with CMR, or NZP-IMR is mapped one-to-one with ZP-IMR.

[0721] Option 2-2: A publicly set NZP-IMR is set for all CMRs, or between NZP-IMR and ZP-IMR.

[0722] • Option 2-3: A publicly set NZP-IMR is set for each CMR group.

[0723] In option 2-1 above, an NZP-IMR can also be set for each CMR.

[0724] In options 2-3 above, it is also possible to apply a commonly set NZP-IMR to multiple CMRs within a CMR group, and to apply the same / different NZP-IMR to multiple CMRs within different CMR groups.

[0725] Whether the NZP-IMR setting for L1-SINR is supported, and whether the above options 2-1 / 2-2 / 2-3 are supported, can also depend on at least one of the UE capabilities and settings made over the network.

[0726] [Implementation Method 0.7.6]

[0727] The UE can also report at least one of the following to the base station in a CSI report: the beam index (CRI / SSBRI) indication, the CMR group ID indication, and the L1-RSRP / L1-SINR value for each beam. The CSI report can also be created following either option 1-1 or 1-2.

[0728] [Option 1-1]

[0729] Indexing can also be performed across all CMR groups for all configured CMRs. A beam index corresponding to a CMR can also be represented using the `ceil(log2(MAX_allgroup))` bits. In this disclosure, `MAX_allgroup` can also refer to the total number of CMRs across all CMR groups. In this disclosure, `ceil(A)` can also refer to the floor function of A (ceiling function). In this disclosure, `log2(B)`, `ceil(log2(B))`, etc., can also be rewritten interchangeably. `ceil(log2(MAX_allgroup))` refers to the number of bits corresponding to a beam index of a CMR when indexing all CMRs across all CMR groups.

[0730] The UE can also create a CSI report using all beam indices corresponding to all selected / reported CMRs.

[0731] For example, in implementations 0.7.1 and 0.7.3B, the UE may also use M×N×ceil(log2(MAX_allgroup)) bits to report M×N beam indices corresponding to M×N CMRs.

[0732] For example, in implementations 0.7.2 and 0.7.3A, the UE may also use K×ceil(log2(MAX_allgroup)) bits to report the K beam indices corresponding to the K CMRs.

[0733] Figure 32A This is a diagram representing an example of a CSI report created following option 1-1. Figure 32A This indicates a mapping of CSI fields included in a CSI report used for CRI / RSRP or SSBRI / RSRP reporting. A CSI field may also contain a beam index (CRI / SSBRI) corresponding to a selected / reported CMR. CSI reports may also contain beam indices corresponding to CMRs from #1 to #M×N or #K.

[0734] [Options 1-2]

[0735] The configured CMRs can also be indexed per CMR group. A beam index corresponding to a CMR within a CMR group can also be represented using the ceil (log2(MAX_pergroup)) bit. In this disclosure, MAX_pergroup can also refer to the number of CMRs within a CMR group. A CMR group ID can also be represented using the ceil (log2(total number of CMR groups)) bit. In this case, a CSI report can also be created following options 1-2A or 1-2B.

[0736] The UE can also create a CSI report for each CMR group using the beam index corresponding to the selected / reported CMR and the CMR group ID containing that CMR (option 1-2A).

[0737] Figure 32B This is a diagram showing an example of a CSI report created following options 1-2A. Figure 32B This indicates a mapping of CSI fields included in a CSI report used for CRI / RSRP or SSBRI / RSRP reporting. A CSI field may also contain a CMR group ID or a beam index (CRI / SSBRI) corresponding to a CMR. A CSI report may also contain more than one set of CSI fields (e.g., CSI field sets #A1, #A2). A CSI field set may also contain a CMR group ID and beam indices corresponding to more than one CMR within that CMR group. A CSI field set may also correspond to a selected / reported CMR group. The number of CSI field sets may also be the same as the number of selected / reported CMR groups.

[0738] The UE can also create a CSI report for each beam index and each CMR group using the beam index corresponding to the selected / reported CMR and the ID of the CMR group containing that CMR (Options 1-2B).

[0739] Figure 32C This is a diagram showing an example of a CSI report created following options 1-2B. Figure 32CThis indicates a mapping of CSI fields included in a CSI report used for CRI / RSRP or SSBRI / RSRP reporting. A CSI field may also contain the ID of a CMR group or a beam index (CRI / SSBRI) corresponding to a CMR. A CSI report may also contain more than one set of CSI fields (e.g., CSI field set #B1, #B2, ...). A CSI field set may also contain the ID of a CMR group and the beam index corresponding to a CMR within that CMR group. A CSI field set may correspond to a selected / reported CMR within a selected / reported CMR group, a selected / reported CMR, or a selected / reported CMR group. The number of CSI field sets may also be the same as the number of selected / reported CMRs.

[0740] For quantization of L1-RSRP / L1-SINR values ​​for each beam, options 2-A or 2-B can also be used. In this disclosure, terms such as strong, larger, higher, and better can be interchanged. Similarly, terms such as strongest, largest, highest, and best can also be interchanged.

[0741] [Option 2-A]

[0742] Alternatively, the strongest value among all measurements (L1-RSRP / L1-SINR values) for all CMR groups can be quantized with 7 bits (or other bit sizes with high quantization resolution), and the remaining values ​​can be differentially quantized with 4 bits (or other bit sizes with low quantization resolution).

[0743] In the CSI report, the beam with the highest L1-RSRP / L1-SINR value among all CMRs can also be mapped / configured first than other beams.

[0744] [Option 2-B]

[0745] Alternatively, the strongest value among all measurements (L1-RSRP / L1-SINR values) of a CMR group can be quantized with 7 bits (or other bit sizes with high quantization resolution), and the remaining values ​​in the CMR group can be differentially quantized with 4 bits (or other bit sizes with low quantization resolution).

[0746] In the CSI report, the beam with the largest L1-RSRP / L1-SINR value in each CMR group can also be mapped / configured before other beams included in the same CMR group.

[0747] In the CSI report, the L1-RSRP / L1-SINR values ​​can also be mapped / configured after the corresponding beam index. In this case, any of the following options 3-A to 3-C can also be used.

[0748] [Option 3-A]

[0749] like Figure 33A As shown, the L1-RSRP / L1-SINR values ​​for each beam can also be mapped / configured immediately following the corresponding beam index.

[0750] [Option 3-B]

[0751] like Figure 33B As shown, the L1-RSRP / L1-SINR values ​​for the beams of each CMR group can also be mapped / configured after the beam index of each CMR group.

[0752] [Option 3-C]

[0753] like Figure 33C As shown, the L1-RSRP / L1-SINR values ​​for all beams can also be mapped / configured after all beam indices.

[0754] According to this implementation method, the size and mapping of CSI reports can be appropriately determined.

[0755] [Changes to Implementation Method 0.7]

[0756] At least one of the following can be set without the network: the number of CMR groups (M), the number of CMRs in each CMR group (N), and the number of CMRs across CMR groups (K). In other words, the UE can also determine at least one of M, N, and K.

[0757] At least one of the following can be set via the network: the maximum number of CMR groups (M'), the maximum number of CMRs within each CMR group (N'), and the maximum number of CMRs across CMR groups (K'). The UE can also determine at least one of the following: M satisfying M≤M', N satisfying N≤N', and K satisfying K≤K'.

[0758] The size of the CSI report can also be variable. To ensure that the network and UE have a common understanding of the CSI report content, the following enhancements can be made:

[0759] • Supports two-part CSI reports, with the first part (CSI part 1) having a fixed size and representing the interpretation and size of the second part (CSI part 2).

[0760] For example, the UE may also report the number of beams reported in the first part using either the ceil (log2(MAX_allgroup)) bit or the ceil (log2(K')) bit. The size and content of the second part can also be determined by the first part. The UE may also report at least one of the following in the second part, according to implementation 0.7.6: a beam index (CRI / SSBRI) indication, a CMR group ID indication, and the L1-RSRP / L1-SINR value for each beam.

[0761] For example, the UE may also report the number of CMR groups in the first part using the ceil(log2(number of CMR groups)) bit or the ceil(log2(M')) bit. The UE may also report the number of CMRs in each CMR group in the first part using the ceil(log2(number of CMRs in each CMR group)) bit or the ceil(log2(N')) bit. The size and content of the second part can also be determined by the first part. The UE may also report at least one of the following in the second part, according to implementation 0.7.6: a beam index (CRI / SSBRI) indication, a CMR group ID indication, and the L1-RSRP / L1-SINR value for each beam.

[0762] MAC CE can also be activated, indicated, or updated based on RRC settings.

[0763] • One or more CMR groups used for beam measurement

[0764] • More than one PCI of one or more CMR groups used for beam measurement

[0765] • Number of CMR groups selected / reported (M) / Number of CMRs selected / reported per CMR group (N) / Number of CMRs selected / reported across CMR groups (K)

[0766] • ZP-IMR / NZP-IMR settings

[0767] • One or more limitations described in Implementation Method 0.7.4

[0768] The aforementioned MAC CE may also include CMR group ID / TRP ID / sub-cell ID.

[0769] When event-based beam reporting / updates are configured, multiple beams reported by the UE (or multiple beams associated with multiple TCI states) can also be applied to multiple channels / RS of the corresponding DL / UL that are set or defined and associated with the corresponding CMR group.

[0770] To support the above applications, a limit can also be set such that a maximum of one beam is reported per CMR group. Alternatively, in the case of reporting multiple beams per group, specific rules can be used to select the beam to be applied in the channel / RS for the corresponding CMR group. This rule could, for example, be to use the initial beam among the multiple beams or to use a beam with a lower / higher ID.

[0771] For each TRP / CMR group, RLM-RS / BFD-RS / PL-RS can also be updated as the reporting beam for the corresponding CMR group.

[0772] According to the above-described implementation method 0.7, non-group-based beam reporting can be appropriately controlled.

[0773] <Implementation Method 0.8>

[0774] This implementation involves group-based beam reporting.

[0775] [Implementation Method 0.8.1]

[0776] In cases where multiple groups of multiple CMRs (SSB / CSI-RS) are configured (e.g., X CMR groups), group-based beam reporting can also be supported / configured. Each CMR group can contain the same number of CMRs (e.g., Y CMRs) or different numbers of CMRs. The UE can also select / report P joint reporting groups.

[0777] Each joint reporting group contains multiple CMR groups, and may also contain Q CMRs (Q satisfying Q≤X) across these multiple CMR groups.

[0778] Within each joint reporting group, the number of CMRs selected / reported from a single CMR group can be up to one.

[0779] The UE can also receive CMRs within a single joint reporting group simultaneously. The network can also transmit CMRs from different CMR groups simultaneously (the network can also transmit RSs simultaneously in multiple CMRs that are contained in multiple CMR groups).

[0780] The aforementioned X / Y / P / Q values ​​can be set via RRC signaling or specified through a standard. Furthermore, the maximum values ​​of X / Y / P / Q can be specified through a standard or reported to the base station via UE capability information.

[0781] The UE can also report information indicating its ability to support group-based beam reporting for multiple CMR groups.

[0782] In the CMR settings, the CMR group ID can also be explicitly set. In this case, the CMR group ID can also be associated with the corresponding TRP / subcell ID.

[0783] In CMR settings, the CMR group ID may not be explicitly set. In this case, the CMR group can also be identified by the ID of the corresponding TRP / sub-cell.

[0784] As a limitation in the CMR settings, you can also set either option 1 or option 2:

[0785] Option 1: A CMR may also be selected / reported only in one joint reporting group. In other words, the same CMR may not be selected / reported between different joint reporting groups.

[0786] Option 2: The same CMR can be selected / reported across different joint reporting groups.

[0787] Figure 34 This is a diagram illustrating a CMR group and an example of CMR. In Figure 34 In this example, five CMR groups are set up (CMR groups 1-5), and the same number (four in this example) of CMRs are set up for each CMR group.

[0788] Figure 35 This is a diagram illustrating an example of the CMR group and CMR reported by the UE in option 1 above. Figure 35 In the report, the UE submits two joint reporting groups. Each joint reporting group contains reports from... Figure 34The UE selects three CMR groups from the five CMR groups (CMR groups 1-5). From each of the four CMRs set in the first joint reporting group (e.g., joint reporting group #1), the UE selects / reports one CMR per CMR group. Furthermore, from each of the four CMRs set in the second joint reporting group (e.g., joint reporting group #2), the UE selects / reports one CMR per CMR group. Figure 35 In this context, the CMR within the first joint reporting group (e.g., joint reporting group #1) differs from the CMR within the second joint reporting group (e.g., joint reporting group #2).

[0789] Figure 36 This is a diagram illustrating an example of the CMR group and CMR reported by the UE in option 2 above. Figure 36 In the report, the UE submits two joint reporting groups. Each joint reporting group contains reports from... Figure 34 The UE selects three CMR groups from the five CMR groups (CMR groups 1-5). From each of the four CMRs set in the first joint reporting group (e.g., joint reporting group #1), the UE selects / reports one CMR per CMR group. Furthermore, from each of the four CMRs set in the second joint reporting group (e.g., joint reporting group #2), the UE selects / reports one CMR per CMR group. Figure 36 In this context, the first joint reporting group (e.g., joint reporting group #1) and the second joint reporting group (e.g., joint reporting group #2) contain common CMRs (e.g., CMRs within CMR group #1).

[0790] According to this implementation, the UE can appropriately select / report CMR.

[0791] [Implementation Method 0.8.2]

[0792] In cases where multiple groups of multiple CMRs (SSB / CSI-RS) are configured (e.g., X CMR groups), group-based beam reporting can also be supported / configured. Each CMR group can contain the same number of CMRs (e.g., Y CMRs) or different numbers of CMRs. The UE can also select / report P1 (first joint reporting group), P2 (second joint reporting group), P3 (third joint reporting group), etc.

[0793] The number of CMRs selected / reported can also be determined per joint reporting group. For example, the number of CMRs in a first joint reporting group could be Q1, the number of CMRs in a second joint reporting group could be Q2, and the number of CMRs in a third joint reporting group could be Q3.

[0794] Within each joint reporting group, the number of CMRs selected / reported from a single CMR group can be up to one.

[0795] A UE can also receive CMRs within a single joint reporting group simultaneously. The network can also transmit CMRs from different CMR groups simultaneously.

[0796] The aforementioned X / Y / P1 / Q1 / P2 / Q2 / P3 / Q3 can be set via RRC signaling or specified via specifications. Furthermore, the maximum values ​​of the aforementioned X / Y / P1 / Q1 / P2 / Q2 / P3 / Q3 can be specified via specifications or reported to the base station via UE capability information.

[0797] As a limitation in the CMR settings, you can also set either option 1 or option 2:

[0798] Option 1: A CMR may also be selected / reported only in one joint reporting group (in other words, the same CMR may not be selected / reported between different joint reporting groups).

[0799] Option 2: The same CMR can be selected / reported across different joint reporting groups.

[0800] Figure 37 This is a diagram illustrating an example of the CMR groups and CMRs reported by the UE. Figure 37 In this case, P1=1, P2=1, and P3=1. That is, in Figure 37 In this report, the UE submits a first joint reporting group, a second joint reporting group, and a third joint reporting group. Furthermore, in... Figure 37 In this context, Q1=1, Q2=2, and Q3=3. That is, the UE selects / reports one CMR from the first joint reporting group (e.g., joint reporting group #1), two CMRs from the second joint reporting group (e.g., joint reporting group #2), and three CMRs from the third joint reporting group (e.g., joint reporting group #3). Figure 37 As shown, the CMRs within each joint reporting group can be different (e.g., joint reporting groups #1 and #2) or can include common CMRs (e.g., joint reporting groups #1 and #3).

[0801] According to this implementation, the UE can appropriately select / report CMR.

[0802] [Implementation Method 0.8.3]

[0803] Similar to implementation 0.7.4, restrictions may also be set on the set CMR for each CMR group, and on at least one of the CMRs of different CMR groups.

[0804] When L1-SINR is set to the report quantity, the ZP-IMR setting can also be the same as in implementation 0.7.5.

[0805] When L1-SINR is set to the report quantity, the NZP-IMR setting can also be the same as in implementation 0.7.5.

[0806] [Implementation Method 0.8.4]

[0807] The UE can also report at least one of the following in a single CSI report to the base station: beam index (CRI / SSBRI) indication, CMR group ID indication, and L1-RSRP / L1-SINR value for each beam.

[0808] It is also possible to index all CMRs across all CMR groups. A beam index corresponding to a single CMR can also be represented using ceil(log2(MAX_allgroup)) bits. ceil(log2(MAX_allgroup)) refers to the number of bits corresponding to a beam index of a single CMR when indexing all CMRs across all CMR groups.

[0809] In implementation 0.8.1, for each joint reporting group, the ID of the joint reporting group with ceil(log2(P)) bits can be reported explicitly or not.

[0810] In implementation 0.8.2, for each joint reporting group, the ID of the joint reporting group with ceil(log2(P1+P2+P3+...)) bits can be reported explicitly or not.

[0811] Even if the ID of the joint reporting group is not reported, in order to make it common knowledge between the UE and the base station which beams belong to the same joint reporting group, rules / restrictions / priorities related to the order of beams in each joint reporting group can be defined.

[0812] The UE can also create a CSI report using all beam indices corresponding to all selected / reported CMRs.

[0813] Figure 38A and 38B This is a diagram illustrating an example of a CSI report. Figure 38AThis indicates a mapping of CSI fields included in a CSI report used for CRI / RSRP or SSBRI / RSRP reporting. A CSI field may also contain the ID of a joint reporting group or a beam index (CRI / SSBRI) corresponding to a CMR. A CSI report may also contain more than one set of CSI fields (e.g., CSI field sets #A1, #A2). A CSI field set may also contain the ID of a joint reporting group and beam indices corresponding to more than one CMR within that joint reporting group. A CSI field set may also correspond to a selected / reported joint reporting group. For example, CSI field sets #A1 and #A2 may also correspond to joint reporting groups #1 and #2 in implementation 0.8.1, respectively. The number of CSI field sets may also be the same as the number of selected / reported joint reporting groups. Figure 38A As shown, when the number of CMRs in each joint reporting group is the same (in the case of implementation 0.8.1), the number of beam indices in each CSI field set is the same.

[0814] Figure 38B This indicates a mapping of CSI fields included in a CSI report used for CRI / RSRP or SSBRI / RSRP reporting. A CSI field may also contain the ID of a joint reporting group or a beam index (CRI / SSBRI) corresponding to a CMR. A CSI report may also contain more than one set of CSI fields (e.g., CSI field sets #B1, #B2, #B3). A CSI field set may also contain the ID of a joint reporting group and beam indices corresponding to more than one CMR within that joint reporting group. A CSI field set may also correspond to a selected / reported joint reporting group. For example, CSI field sets #B1, #B2, and #B3 may also correspond to joint reporting groups #1, #2, and #3 in implementation 0.8.2, respectively. The number of CSI field sets may also be the same as the number of selected / reported joint reporting groups. Figure 38B As shown, the number of beam indices for each CSI field set differs when the number of CMRs in each joint reporting group is different (in the case of implementation 0.8.2).

[0815] A CSI field can also represent the L1-RSRP / L1-SINR value used for beaming.

[0816] Similar to implementation 0.7.6, the L1-RSRP / L1-SINR values ​​for each beam can also be mapped / configured immediately following the corresponding beam index.

[0817] Similar to implementation 0.7.6, the L1-RSRP / L1-SINR values ​​for the beams of each joint reporting group can also be mapped / configured after the beam index of each joint reporting group.

[0818] Similar to implementation 0.7.6, the L1-RSRP / L1-SINR values ​​for all beams can also be mapped / configured after all beam indices.

[0819] For quantization of the L1-RSRP / L1-SINR values ​​for each beam, options A or B can also be used.

[0820] [Option A]

[0821] Alternatively, the strongest value among all measurements (L1-RSRP / L1-SINR values) for all beams can be quantized with 7 bits (or other bit sizes with high quantization resolution), and the remaining values ​​can be differentially quantized with 4 bits (or other bit sizes with low quantization resolution).

[0822] In the CSI report, the beam with the highest L1-RSRP / L1-SINR value among all CMRs and the ID of the joint reporting group can also be mapped / configured first than other beams.

[0823] [Option B]

[0824] Alternatively, the strongest value among all measurements (L1-RSRP / L1-SINR values) for a joint reporting group can be quantized with 7 bits (or other bit sizes with high quantization resolution), and the remaining values ​​within the joint reporting group can be differentially quantized with 4 bits (or other bit sizes with low quantization resolution) per joint reporting group.

[0825] In CSI reports, the beam with the highest L1-RSRP / L1-SINR value in the CMR of each joint reporting group can also be mapped / configured before other beams included in the same joint reporting group.

[0826] The UE can also support periodic / aperiodic / semi-persistent beam reporting in UCI, or event-triggered beam reporting via MAC CE.

[0827] [Changes to Implementation Method 0.8]

[0828] At least one of the following can be set without network access: the number of joint reporting groups (P, P1, P2, P3, ...) and the number of CMRs (Q, Q1, Q2, Q3, ...) for each joint reporting group. In other words, the UE can also determine at least one of P, P1, P2, P3, ... and Q, Q1, Q2, Q3, ...

[0829] At least one of the maximum number of joint reporting groups (P', P1', P2', P3', ...) and the maximum number of CMRs for each joint reporting group (Q', Q1', Q2', Q3', ...) can also be set via the network. The UE can also determine at least one of the number of joint reporting groups below the set maximum number of joint reporting groups and the number of CMRs for each joint reporting group below the set maximum number of CMRs for each joint reporting group.

[0830] The size of the CSI report can also be variable. To ensure that the network and UE have a common understanding of the CSI report content, the following enhancements can be made:

[0831] • Supports two-part CSI reports, with the first part (CSI part 1) having a fixed size and representing the interpretation and size of the second part (CSI part 2).

[0832] For example, the UE may also use the ceil(log2(P')) bit in the first part to report the number of joint reporting groups. The UE may also use the ceil(log2(number of CMR groups)) bit or the ceil(log2(Q')) bit in the first part to report the common number of CMRs per joint reporting group.

[0833] For example, the UE may also use the ceil(log2(P')) bit in the first part to report the number of joint reporting groups. The UE may also use the P×ceil(log2(number of CMR groups)) bit or the P×ceil(log2(Q')) bit in the first part to report different numbers of CMRs for each joint reporting group.

[0834] MAC CE can also be activated, indicated, or updated based on RRC settings.

[0835] • One or more CMR groups used for beam measurement

[0836] • More than one PCI of one or more CMR groups used for beam measurement

[0837] • Number of joint reporting groups (P, P1, P2, P3, ...) / Number of joint reporting groups selected / Number of reported CMRs (Q, Q1, Q2, Q3, ...)

[0838] • ZP-IMR / NZP-IMR settings

[0839] • One or more limitations described in Implementation Method 0.7.4

[0840] The aforementioned MAC CE may also include CMR group ID / TRP ID / sub-cell ID.

[0841] When event-based beam reporting / updates are configured, multiple beams reported by the UE (or multiple beams associated with multiple TCI states) can also be applied to multiple channels / RS of the corresponding DL / UL that are set or defined and associated with the corresponding CMR group.

[0842] To support the above applications, a limit of reporting at most one joint reporting group can also be set. Alternatively, in the case of reporting multiple joint reporting groups, specific rules for selecting the beam to be applied in the channel / RS for the corresponding CMR group can be used. This rule can, for example, be either using the initial joint reporting group among the multiple joint reporting groups, or using the joint reporting group with the fewest / most beams.

[0843] For each TRP / CMR group, RLM-RS / BFD-RS / PL-RS can also be updated as the reporting beam for the corresponding CMR group.

[0844] According to the above-described implementation method 0.8, group-based beam reporting can be appropriately controlled.

[0845] <Implementation Method 0.9>

[0846] This implementation involves the conditions of SRS resource sets / SRS resources.

[0847] Furthermore, this implementation method can be applied to both cellless structures and structures that are not cellless.

[0848] The SRS can also be configured for specific purposes (e.g., beam management / non-codebook / codebook / antenna switching).

[0849] Multiple SRS resource sets can also be configured for the UE.

[0850] An SRS resource set can also correspond to one or more TRPs / subcells / UE panels.

[0851] For multiple SRS resource sets, one or more conditions can be applied / considered. The UE can also envision / determine whether to apply one or more conditions for multiple SRS resource sets.

[0852] The condition can also be at least one of the following options 1-1 to 1-10.

[0853] Option 1-1

[0854] This condition could also be, for example, a condition related to a beam applied to multiple SRS resource sets / SRS resources.

[0855] In the case of SRS resources that are configured for a specific purpose (e.g., beam management) and are accompanied by beam-related information (e.g., spatial relationship / TCI status), multiple SRS resources within an SRS resource set may use QCL source RSs of the same RS type.

[0856] The RS type can also be at least one of the following: synchronization signal only (e.g., SSB), CSI-RS only, and SRS only.

[0857] The RS type of the QCL source RS used by multiple SRS resources within different SRS resource sets can also be determined separately.

[0858] For example, multiple SRS resources within different SRS resource sets can use QCL source RSs that have different RS types.

[0859] Options 1-2

[0860] This condition could also be, for example, a condition related to the Physical Cell ID (PCI) corresponding to multiple SRS resource sets / SRS resources.

[0861] Multiple SRS resources within an SRS resource set can also be associated with the same PCI using QCL source RS / associated RS.

[0862] The PCI associated with multiple SRS resources in different SRS resource sets using QCL source RS / associated RS can also be determined separately.

[0863] For example, multiple SRS resources within different SRS resource sets can use QCL source RS / associated RS, which can also be associated with different PCIs.

[0864] Options 1-3

[0865] This condition could also be, for example, a condition related to the transmission and reception timing (e.g., timing advance) of multiple SRS resource sets / SRS resources.

[0866] SRS resources within an SRS resource set can also be associated with the same Timing Advance (TA) / TA Group (TAG).

[0867] The TA / TAG associated with SRS resources in different SRS resource sets can also be determined separately.

[0868] For example, SRS resources within different SRS resource sets can also be associated with different TAs / TAGs.

[0869] Options 1-4

[0870] This condition could also be, for example, a condition related to the transmission and reception timing (e.g., timing advance) of multiple SRS resource sets / SRS resources.

[0871] It can also be set / associated / supported with offsets related to timing advance (e.g., n-TimingAdvanceOffset) on a per SRS resource set.

[0872] Options 1-5

[0873] This condition could also be, for example, a condition related to the transmit / receive timing (e.g., DL reference timing) corresponding to multiple SRS resource sets / SRS resources.

[0874] It can also be set / associated / supports DL reference timing on a per SRS resource set.

[0875] Options 1-6

[0876] This condition could also be, for example, a condition related to transmit power control applied to multiple SRS resource sets / SRS resources.

[0877] It can also be set / associated / supported for each SRS resource set with at least one of the following: path loss RS and transmit power control (TPC) parameters (e.g., parameters related to p0 / α / PC adjustment status).

[0878] Options 1-7

[0879] This condition can also be, for example, a condition associated with a specific ID corresponding to multiple SRS resource sets / SRS resources.

[0880] An SRS resource within an SRS resource set can also be associated with at least one of the same Channel Measurement Resource (CMR) group ID, TRP / subcell ID, and UE panel ID.

[0881] At least one of the CMR group ID, TRP sub-cell ID, and UE panel ID associated with SRS resources in different SRS resource sets can also be determined separately.

[0882] For example, SRS resources within different SRS resource sets can also be associated with at least one of different Channel Measurement Resource (CMR) group IDs, TRP / subcell IDs, and UE panel IDs.

[0883] If the UE reports the capability for simultaneous transmission with a specific panel, it can also transmit simultaneously for the SRS resource set associated with the corresponding panel. Otherwise, the UE can transmit by time-division multiplexing for the SRS resource set associated with the corresponding panel.

[0884] Figure 39 This is a diagram illustrating an example of the allocation of SRS resource sets / SRS resources involved in options 1-7. Figure 39 In the example shown, SRS resource sets #1 to #3 are allocated to the UE. Figure 39 In the example shown, SRS resources within an SRS resource set are associated with the same TRP (TRP ID) (in... Figure 39 (The example shown is an SRS resource set containing two SRS resources). Furthermore, in... Figure 39 In the example shown, SRS resources in different SRS resource sets are associated with different TRPs (TRP IDs).

[0885] Options 1-8

[0886] This condition could also be, for example, a condition related to beams (based on repeated beams) applied to multiple SRS resource sets / SRS resources.

[0887] For each SRS resource set, the NW / base station can also indicate the same / different beams for each set by setting the repetition to "on" or "off".

[0888] Options 1-9

[0889] This condition can also be, for example, a condition related to multiple SRS resource sets / SRS resources (e.g., duplicate SRS resources).

[0890] Multiple SRS resources within different SRS resource sets can also be non-overlapping.

[0891] The UE can also be designed so that multiple SRS resources within different SRS resource sets do not overlap.

[0892] Options 1-10

[0893] This condition can also be, for example, a condition related to multiple SRS resource sets / SRS resources (e.g., simultaneous transmission of SRS resources).

[0894] The UE can also be envisioned as a report based on the UE's capabilities, capable of simultaneously sending multiple SRS resources from a specific maximum number (e.g., X) of SRS resource sets.

[0895] An SRS resource in each SRS resource set can also be sent in a specific time instance.

[0896] This specific maximum number can also be greater than the maximum number of existing SRS resource sets (e.g., 16) (e.g., 32, 64). By configuring it in this way, it is possible to support / set a larger number of SRS resource sets.

[0897] The maximum number of SRS resource sets can also be determined based on UE capability information.

[0898] In addition, the maximum number of SRS resources in each SRS resource set can also be determined based on UE capability information.

[0899] Variation 1 of Implementation Method 0.9

[0900] An SRS resource set (each SRS resource set) can also be associated with a PCI, and an SRS resource set can also be associated with multiple TRPs.

[0901] Multiple subsets can also be defined for an SRS resource set (each SRS resource set). A subset within these multiple subsets can also be associated with a TRP (TRP ID) / TA / TAG.

[0902] For example, the above options 1-1 / 1-3 / 1-4 / 1-5 / 1-6 / 1-7 / 1-8 / 1-9 can also be applied to each subset of these multiple subsets.

[0903] Figure 40 This is a diagram illustrating an example of the allocation of SRS resource sets / SRS resources involved in Variation 1 of Implementation 0.9. Figure 40 In the example shown, SRS resource sets #1 and #2 are assigned to the UE. Figure 40 In the example shown, SRS resource set #1 is associated with PCI #1, and SRS resource set #2 is associated with PCI #2.

[0904] exist Figure 40 In the example shown, subsets #1 and #2 are defined within SRS resource set #1. Subset #1 (containing SRS resources) and subset #2 (containing SRS resources) are associated with different TRPs (TRP IDs).

[0905] Variation 2 of Implementation Method 0.9

[0906] An SRS resource set (each SRS resource set) can also be associated with multiple specific TRPs.

[0907] These specific multiple TRPs can also be, for example, multiple co-located TRPs (multiple TRPs with the same TA / TAG / TA offset / DL reference timing). In other words, the TA / TAG / TA offset / DL reference timing can also be different for each SRS resource set.

[0908] Multiple subsets can also be defined for a single SRS resource set (each SRS resource set). A subset within these multiple subsets can also be associated with a TRP (TRP ID) / PCI / path loss RS.

[0909] For example, the above options 1-1 / 1-2 / 1-6 / 1-7 / 1-8 / 1-9 can also be applied to each subset of these multiple subsets.

[0910] By setting it up in this way, different restrictions / conditions can be applied to each SRS resource set, and UE / NW responses / operations can be performed in accordance with various situations.

[0911] Figure 41 This is a diagram illustrating an example of the allocation of SRS resource sets / SRS resources involved in variation 2 of implementation 0.9. Figure 41 In the example shown, SRS resource sets #1 and #2 are assigned to the UE. Figure 41 In the example shown, SRS resource set #1 is associated with PCI #1 and PCI #2, and SRS resource set #2 is associated with PCI #3. The TRP corresponding to PCI #1 and the TRP corresponding to PCI #2 are co-located.

[0912] exist Figure 41In the example shown, subsets #1 and #2 are defined within SRS resource set #1. Subset #1 (containing SRS resources) and subset #2 (containing SRS resources) are associated with different TRPs (TRP IDs).

[0913] In addition, in implementation 0.9, in cases where SRS is used for different purposes, at least one of the following can be determined / set separately (differently): the conditions for application, the maximum number of SRS resource sets, and the maximum number of SRS resources in each SRS resource set.

[0914] According to this implementation, the conditions involved in the SRS resource set / SRS resource can be appropriately specified, enabling efficient beam measurement / reporting.

[0915] <Implementation Method 0.10>

[0916] This implementation relates to UL transmission (e.g., SRS transmission) for deactivated SCells.

[0917] You can also set specific new RRC parameters for the UE. These new RRC parameters can be, for example, parameters related to UL transmissions used by deactivated SCells (e.g., triggering of SRS (e.g., non-periodic SRS) transmissions).

[0918] The UE can also support triggering the transmission of SRS (e.g., non-periodic SRS) for deactivated SCells.

[0919] The structure of the SRS resource set for the deactivated SCell's SRS (e.g., non-periodic SRS) can also follow the above implementation 0.9.

[0920] A carrier indicator field (CIF) may also be included in a specific DCI format (e.g., the DCI format for scheduling DL channels (e.g., DCI format 1_0 / 1_1 / 1_2) / the DCI format for scheduling UL channels (e.g., DCI format 0_0 / 0_1 / 0_2)).

[0921] When specific new RRC parameters are set, the UE can also determine / assume that the number of bits in the carrier indicator field is greater than the number of bits in the existing 5G NR (e.g., 3 bits) (e.g., 4 or 5 bits).

[0922] For example, the possible values ​​of the RRC parameter (e.g., cif-InSchedulingCell) representing the CIF value used for scheduling cells can also be extended from the existing range (e.g., 1 to 7). The extended range could be, for example, 1 to 15 or 1 to 31.

[0923] When a new RRC parameter is set for the UE, the CIF specified for use with the SCell can also be activated or deactivated.

[0924] SRS offset fields can also be included in certain DCI formats (e.g., DCI format 0_0 / 0_1 / 0_2 / 1_0 / 1_1 / 1_2 / 2_1 / 2_2).

[0925] When the CIF used for SCell is deactivated, the UE may also determine / assume that the specific DCI format contains a field related to the additional SRS offset.

[0926] The fields (values) associated with this additional offset can be specified in advance by the specification, set / notified to the UE using RRC / MAC CE, determined based on the UE capability information report, or determined based on a combination of these.

[0927] When a specific new RRC parameter is set, and a trigger setting for SRS transmission of type 1 (e.g., type A) is set, the RRC parameter value indicating the CC index within a component carrier (CC) set (e.g., cc-IndexInOneCC-Set) can also be extended from the existing range (e.g., 0 to 7). The extended range can be, for example, 0 to 15 or 0 to 31.

[0928] When a specific new RRC parameter is set and a trigger setting for SRS transmission of type 2 (e.g., type B) is set, a new carrier indicator field for indicating the cell ID for the SRS request field can be added to the DCI format for more than one UE (e.g., the DCI format of the group used to send TPC commands for SRS transmission (DCI format 2_3)).

[0929] When a UE transmits SRS in a deactivated SCell, existing operations related to conflict handling between different CCs can also be applied. For example, when a UE transmits SRS in a deactivated SCell, the UE can also determine / presume that no other UL transmissions will be performed in other cells.

[0930] In addition, existing UE operations can be applied for different UE capabilities (e.g., UE capabilities related to simultaneous transmission and reception with inter-band CA (e.g., between TDD and TDD, or between TDD and FDD), or UE capabilities involved in half-duplex UE operations with the same subcarrier spacing in TDD).

[0931] According to this implementation, SRS transmission for deactivated SCells can be performed appropriately.

[0932] <Implementation Method 0.11>

[0933] This implementation relates to CSI reports for deactivated SCells.

[0934] You can also set specific new RRC parameters for the UE. These new RRC parameters can be, for example, parameters related to the UL transmission (CSI report (e.g., non-periodic CSI report) triggering) used by the deactivated SCell.

[0935] The specific new RRC parameter can be either a parameter common to the new RRC parameter in Embodiment 0.10 above, or a parameter different from the new RRC parameter in Embodiment 0.10 above.

[0936] The CMR measurement / reporting settings for deactivated SCell CSI reports (non-periodic CSI reports) can also follow at least one of the methods detailed below.

[0937] A carrier indicator field (CIF) may also be included in certain DCI formats (DCI format 1_0 / 1_1 / 1_2 / 0_0 / 0_1 / 0_2 / 2_1 / 2_2).

[0938] When specific new RRC parameters are set, the UE can also determine / assume that the number of bits in the carrier indicator field is greater than the number of bits in the existing 5G NR (e.g., 3 bits) (e.g., 4 or 5 bits).

[0939] For example, the possible values ​​for the RRC parameter (e.g., cif-InSchedulingCell) representing the CIF value used for scheduling cells can also be extended from the existing range (e.g., 1 to 7). The extended range could be, for example, 1 to 15 or 1 to 31.

[0940] When aperiodic SRS triggering and aperiodic CSI reporting triggering are supported / configured, the UE can also determine to use the common CIF contained in the DCI. In other words, when aperiodic SRS triggering and aperiodic CSI reporting triggering are supported / configured, the CIF contained in the DCI can also be a common field for aperiodic SRS triggering and aperiodic CSI reporting triggering.

[0941] In Implementation 0.11, the CMR measurement / reporting settings described in Implementation 0.7 / 0.8 can also be applied.

[0942] According to this implementation, CSI reports for deactivated SCells can be appropriately generated.

[0943] <Implementation Method 0.12>

[0944] This implementation relates to the application of beamforming (TCI state / spatial relationship / QCL concept) in the case of utilizing SCells (e.g., deactivated SCells).

[0945] In this disclosure, beams, reference signals (e.g., SSB / CSI-RS / TRS / SRS / other arbitrary reference signals), TCI states, DL / UL / joint TCI states, spatial relationships, QCL assumptions, QCL information, RS resources of specific QCL types, etc., can also be rewritten.

[0946] The UE may also apply at least a portion of the beam-related settings of other cells that are different from a specific cell (e.g., SCell (deactivated SCell)) to that specific cell.

[0947] Implementation Method 0.12-1

[0948] It can also support the utilization / reference / setting of RS resources / spatial relationships / TCI states of specific QCL types from other cells / CCs (e.g., PCell#B / SCell#B / CC#B) for beams used for SRS resources in a specific cell / CC (e.g., serving cell #A (SCell#A / CC#A)).

[0949] For example, the UE can also utilize / reference the settings of beams (e.g., RS resources / spatial relationships / TCI status of a specific QCL type) from other cells / CCs (e.g., PCell#B / CC#B) to use for beams used for SRS resources in a specific cell / CC (e.g., serving cell #A (SCell#A / CC#A)).

[0950] The beam can also be configured to the UE via, for example, higher-layer signaling (RRC / MAC CE).

[0951] This particular QCL type may, for example, contain at least QCL type D. Furthermore, this particular type may also be QCL type A / B / C / D.

[0952] By determining / setting the beam of a specific CC (CC#A) based on the beam management / beam setting of other CCs (PCell#B / CC#B), the NW / base station can limit the beam reporting of a specific CC (CC#A), thus reducing the time required for beam management in that specific CC.

[0953] In addition, this embodiment can also be applied, for example, to the SRS transmission beam involved in the above embodiment 0.10.

[0954] Figure 42 This is a diagram illustrating an example of the application of the beam according to embodiment 0.12. Figure 42 In the example shown, the UE performs beam management in CC#B (PCell). The UE is configured in CC#A (SCell) for the RS of CC#B used for beam management (e.g., RS of QCL type D).

[0955] Implementation Method 0.12-2

[0956] It can also support the use / reference / setting of beams (e.g., RS resources / spatial relationships / TCI states of a specific QCL type) from other cells / CCs (e.g., PCell#B / SCell#B / / CC#B) for use in CSI-RS resources / CMR in a specific cell / CC (e.g., serving cell #A (SCell#A / CC#A)).

[0957] For example, the UE can also utilize / reference the beam settings (e.g., RS resource / spatial relationship / TCI state of a specific QCL type) from other cells / CCs (e.g., PCell#B / SCell#B / CC#B) for CSI-RS resources / CMR in a specific cell / CC (e.g., serving cell #A (SCell#A / CC#A)).

[0958] The beam can also be configured to the UE via, for example, higher-layer signaling (RRC / MAC CE).

[0959] This particular QCL type may, for example, contain at least QCL type D. Furthermore, this particular type may also be QCL type A / B / C / D.

[0960] By determining / setting the CSI-RS resources / CMR of a specific CC (CC#A) based on beam management / beam settings of other CCs (CC#B), the NW / base station can reduce the time required to set up that specific CSI report.

[0961] Additionally, this implementation can also be applied, for example, to the resources involved in the CSI report as described in implementations 0.7 / 0.8 / 0.11.

[0962] Implementation Method 0.12-3

[0963] It can also support the use / reference / setting of beams (e.g., RS resources / spatial relationships / TCI states of a specific QCL type) from other cells / CCs (e.g., PCell#B / SCell#B / CC#B) for beam settings of reference signals (e.g., SSB / CSI-RS / TRS) in a specific cell / CC (e.g., serving cell #A (SCell#A / CC#A)).

[0964] For example, the UE may also utilize / reference beam settings (e.g., RS resource / spatial relationship / TCI state of a specific QCL type) from other cells / CCs (e.g., PCell#B / SCell#B / CC#B) to use for beam settings of reference signals (e.g., SSB / CSI-RS / TRS) in a specific cell / CC (e.g., serving cell #A (SCell#A / CC#A)).

[0965] The beam can also be configured to the UE via, for example, higher-layer signaling (RRC / MAC CE).

[0966] This particular QCL type may, for example, contain at least QCL type D. Furthermore, this particular type may also be QCL type A / B / C / D.

[0967] By determining / setting the beam of a specific CC (CC#A)’s reference signal based on other CCs (CC#B) in this way, more sustainable and low-overhead communication is possible.

[0968] Alternatively, implementation method 0.12 (implementation method 0.12-1 / 0.12-2 / 0.12-3) can also be applied if the UE supports / reports the corresponding UE capability information.

[0969] Furthermore, in implementation 0.12, the use of information related to a specific QCL type (e.g., QCL type B) can also be applied to intra-frequency CA scenarios.

[0970] According to implementation 0.12, the beam used in the SCell (e.g., a deactivated SCell) can be determined efficiently.

[0971] <Implementation Method 1>

[0972] This implementation involves the activation of the TCI state of MAC CE in the case of an indication for TRP / subcell selection.

[0973] Implementation Method 1-1

[0974] A single MAC CE can also activate multiple TCI states from a single TRP / subcell.

[0975] An index of a TRP / subcell (TRP / subcell index) can also be indicated in the active MAC CE used for TCI status.

[0976] A TRP / subcell index can also be indicated in a signal (signaling, notification) other than the MAC CE used for TCI status activation. For example, the signal could be higher-layer signaling, other MAC CEs, or DCIs. In other words, a TRP / subcell can also be activated.

[0977] A TRP / sub-cell index can also be reported / requested by the UE via UCI / MAC CE. Reporting of a TRP / sub-cell index can also be triggered by the base station. Alternatively, reporting of a TRP / sub-cell index can be initiated by the UE in a beam reporting event, etc. The base station can also send / feed back an ACK / NACK response to the UE's report / request. A TRP / sub-cell can also be activated after the UE reports following the receipt of an ACK from the base station.

[0978] The size of a field in a TRP / subcell index can also be ceil(log2(N)). TRP )) bits. N TRP It can also be the number of TRPs / subcells set in a cell / supercell.

[0979] The size of a field in a TRP / subcell index can also be ceil(log2(maxN)). TRP )) bits. maxN TRP It can also be the maximum number of TRPs / subcells set within a cell / supercell. maxN TRP It can be specified in the standard or it can be a value based on UE capability information.

[0980] Multiple TCI states for an indicated TRP / subcell can also be indexed for use in the TCI state indication field within the MAC CE. For example, in the TCI state indication field within the MAC CE, when the indicated TCI ID=0, the first TCI state among the multiple TCI states set for the indicated / activated TRP / subcell can also be activated. Similarly, in the TCI state indication field within the MAC CE, when the indicated TCI ID=1, the second TCI state among the multiple TCI states set for the indicated / activated TRP / subcell can also be activated.

[0981] The number of TCI status indication fields in MAC CE can also be more than one.

[0982] The size of the TCI status indicator field within MAC CE can also be ceil(log2(N)). TCI-TRP )) bits. N TCI-TRP It can also be the number of TCI states set for a TRP / subcell to be indicated.

[0983] The size of the TCI status indicator field within MAC CE can also be ceil(log2(maxN)). TCI-TRP )) bits. maxN TCI-TRP It can also be the maximum number of TCI states set for a TRP / subcell. maxN TCI-TRP It can be specified in the standard or it can be a value based on UE capability information.

[0984] Figure 43 This is a diagram illustrating an example of the association between the TCI status indication field and the TRP / sub-cell. In Figure 43 In the case where TRP / sub-cell index #1 is indicated / activated via higher-layer signaling, MAC CE (MAC CE for activating the aforementioned TCI state, or other MAC CEs), or DCI, the TCI state indicated / activated via the TCI state indication field of the MAC CE for activating the TCI state corresponds to the TCI state of TRP / sub-cell index #1. Similarly, when TRP / sub-cell index #2 is indicated / activated via higher-layer signaling, MAC CE (MAC CE for activating the aforementioned TCI state, or other MAC CEs), or DCI, the TCI state indicated / activated via the TCI state indication field of the MAC CE for activating the TCI state corresponds to the TCI state of TRP / sub-cell index #2. When TRP / subcell index #N is indicated / activated via higher-layer signaling, MAC CE (MAC CE for activation of the aforementioned TCI state, or other MAC CE), or DCI, the TCI state indicated / activated via the TCI state indication field of the MAC CE for activation of the TCI state corresponds to the TCI state of TRP / subcell index #N. More than one TCI state indicated / activated in the TCI state indication field of the MAC CE for activation of the TCI state can also be mapped to more than one code point in the TCI field within the DCI.

[0985] Implementation Methods 1-2

[0986] A single MAC CE can also activate multiple TCI states from multiple TRPs / subcells.

[0987] Multiple TRPs / subcells can also be indicated in the MAC CE used for TCI status activation.

[0988] Multiple TRPs / subcells can also be indicated by signals other than the MAC CE used for TCI status activation. For example, this signal could be other signals (RRC signaling / MAC CE / DCI). In other words, multiple TRPs / subcells can be activated.

[0989] Multiple TRPs / subcells can also be reported / requested by the UE via UCI / MAC CE. Reporting of multiple TRPs / subcells can also be triggered by the base station. Alternatively, reporting of multiple TRPs / subcells can be initiated by the UE through beam reporting, etc. The base station can also send / feed back an ACK / NACK response to the UE's report / request. Multiple TRPs / subcells can also be activated after the UE reports following the receipt of an ACK from the base station.

[0990] The method for indicating multiple TRPs / subcells can also follow at least one of the following methods A1, A1', and A2.

[0991] [Method A1]

[0992] It can also indicate multiple TRP / subcell indexes.

[0993] The size of the fields in each TRP / sub-cell index can also be ceil(log2(N)). TRP )) bits. N TRP It can also be the number of TRPs / subcells set in a cell / supercell.

[0994] The size of the fields in each TRP / sub-cell index can also be ceil(log2(maxN)). TRP )) bits. maxN TRP It can also be the maximum number of TRPs / subcells set within a cell / supercell. maxN TRP It can be specified in the standard or it can be a value based on UE capability information.

[0995] [Method A1']

[0996] Multiple TRPs / subcells can also be indicated via a bitmap.

[0997] In method A1', each bit of the bitmap can also correspond to a TRP / subcell.

[0998] For example, setting the value of the bit corresponding to a specific TRP / subcell to 1 can also mean that the specific TRP / subcell is selected / activated. Setting the value of the bit corresponding to a specific TRP / subcell to 0 can also mean that the specific TRP / subcell is not selected / activated.

[0999] For example, setting the value of the bit corresponding to a specific TRP / subcell to 0 can also mean that the specific TRP / subcell is selected / activated. Setting the value of the bit corresponding to a specific TRP / subcell to 1 can also mean that the specific TRP / subcell is not selected / activated.

[1000] The size of the bitmap can also be the number of TRPs / subcells within a cell / supercell. For example, if a cell / supercell contains X TRPs / subcells, the size of the bitmap can also be X bits.

[1001] The size of the bitmap can also be the maximum number of TRPs / subcells that can be set within a cell / supercell. For example, if a maximum of Y TRPs / subcells can be set within a cell / supercell, the bitmap size can also be Y bits. In this case, the bitmap size (Y) can be specified in the specification or based on a value from the UE capability information.

[1002] [Method A2]

[1003] It can also indicate the index of a group of TRPs / subcells (TRP / subcell group index) for a group / combination of TRPs / subcells that contains multiple TRPs / subcells.

[1004] TRP / subcell group can also be used for coordinated transmission and reception with the UE.

[1005] Grouping of multiple TRPs / subcells can also follow at least one of the following groups A and B.

[1006] [Group A]

[1007] Grouping of multiple TRPs / subcells can also be set / indicated via RRC signaling / MAC CE / DCI. The mapping / correspondence between TRP / subcell group indexes and TRPs / subcells can also be set / indicated via RRC signaling / MAC CE / DCI.

[1008] [Group B]

[1009] The grouping of multiple TRPs / subcells can also be determined by the UE according to specific rules. The mapping / correspondence between TRP / subcell group indexes and TRPs / subcells can also be determined by the UE according to specific rules. Alternatively, the TRP / subcell group index can be mapped one-to-one to all possible groups based on the TRPs / subcells configured within the cell / supercell and the number of TRPs / subcells within the TRP / subcell group. The number of TRPs / subcells within a TRP / subcell group can be set / indicated via RRC signaling / MAC CE / DCI, or it can be a value based on UE capability information.

[1010] For example, in group B, there could be 10 TRP / subcells (#1, #2, ..., #10), with 4 TRP / subcells contained in one TRP / subcell group. In this case, the number of all possible groups is C(10, 4) = 2^10. Specifically, a TRP / subcell group can also be a combination of one of the 2^10 possible combinations of TRP / subcells, such as {#1, #2, #3, #4}, {#1, #2, #3, #5}, ..., {#1, #3, #4, #5}, ..., {#2, #3, #4, #5}, ...

[1011] In groups A and B above, the number of TRPs / subcells within all TRP / subcell groups can be the same. For example, all TRP / subcell groups can each contain 2 TRPs / subcells, or all TRP / subcell groups can each contain 4 TRPs / subcells. Furthermore, the number of TRPs / subcells within a TRP / subcell group is not limited to the numbers mentioned above.

[1012] In the aforementioned groups A and B, the number of TRPs / subcells within different TRP / subcell groups can be the same or different. For example, the first TRP / subcell group can contain 2 TRPs / subcells, the second TRP / subcell group can contain 4 TRPs / subcells, and the third TRP / subcell group can contain 2 TRPs / subcells. Furthermore, the number of TRPs / subcells within a TRP / subcell group is not limited to the numbers mentioned above.

[1013] The size of a field in a TRP / subgroup index can also be ceil(log2(N)). TRPgroup )) bits. N TRPgroup It can also be the number of TRPs / subcell groups within a cell / supercell.

[1014] Regarding N TRPgroupIn the case that all possible groups of TRPs / subcells are included, the number of TRPs / subcells in all TRP / subcell groups is the same, X TRPs / subcells are set in a cell / supercell, and Y TRPs / subcells are included in a TRP / subcell group, N TRPgroup It can also be C(X,Y).

[1015] Regarding N TRPgroup It includes all possible groups of TRPs / subcells. The number of TRPs / subcells in different TRP / subcell groups can also be different. X TRPs / subcells are set in a cell / supercell, and Y TRPs / subcells are included in the Mth TRP / subcell group. M In the case of N TRP / subcell TRPgroup It can also be C(X, Y1) + C(X, Y2) + ... + C(X, Y) M ).

[1016] The size of a field in a TRP / subgroup index can also be ceil(log2(maxN)). TRPgroup )) bits. maxN TRPgroup It can also be the number of TRPs / subcell groups that can exist within a cell / supercell. maxN TRPgroup It can be specified in the standard or it can be a value based on UE capability information.

[1017] The number of TCI states activated in each MAC CE used for indicated / activated TRPs can also be fixed. Specifically, this number can be specified in the specification, follow settings based on RRC signaling, or follow UE capability information.

[1018] The number of TCI states activated in each MAC CE used for each indicated / activated TRP can also be variable. In this case, the number can also follow at least one of the maximum number specified in the specification, the maximum number set based on RRC signaling, and the maximum number based on UE capability information.

[1019] Regarding the number of TCI states activated in the MAC CE for different TRPs, the number of TCI states activated for all indicated / activated TRPs can also be common / the same.

[1020] Regarding the number of TCI states activated in the MAC CE for different TRPs, the number of TCI states activated for different TRPs can be different or the same.

[1021] Multiple TCI states for a TRP / subcell can also be indexed for use in the TCI state indication field within the MAC CE. For example, in the TCI state indication field within the MAC CE, when TCI ID=0 is indicated, the first TCI state among the multiple TCI states set for a TRP / subcell can also be activated. Similarly, in the TCI state indication field within the MAC CE, when TCI ID=1 is indicated, the second TCI state among the multiple TCI states set for a TRP / subcell can also be activated.

[1022] The size of the TCI status indication field within the MAC CE can also follow at least one of the following methods B1 and B2.

[1023] [Method B1]

[1024] The size of the TCI status indicator field within MAC CE can also be ceil(log2(N)). TCI-TRP )) bits. N TCI-TRP It can also be the number of TCI states set for a TRP / subcell to be indicated.

[1025] [Method B2]

[1026] The size of the TCI status indicator field within MAC CE can also be ceil(log2(maxN)). TCI-TRP )) bits. maxN TCI-TRP It can also be the maximum number of TCI states set for a TRP / subcell. maxN TCI-TRP It can be specified in the standard or it can be a value based on UE capability information.

[1027] When multiple TRPs / subcells are indicated, the UE needs to identify which TRP / subcell the TCI status indication field of the MAC CE corresponds to. The association between the TCI status indication field and the TRP / subcell when multiple TRPs / subcells are indicated can also follow at least one of the following methods C1 and C2.

[1028] [Method C1]

[1029] The initial X1 TCI status indication fields can also correspond to the first TRP / subcell, and the next X2 TCI status indication fields can also correspond to the second TRP / subcell, ..., and so on. M Each TCI status indication field can also correspond to the Mth TRP / subcell.

[1030] The number of TCI states activated for multiple TRPs / subcells can also be the same. That is, it can also be X1=X2=…=X M .

[1031] The number of TCI states activated for different TRPs / subcells can be the same or different. That is, X1, X2, ..., X M They can be the same or different.

[1032] The number of TCI states activated for each TRP / subcell, and the number of TCI state indication fields mapped to each TRP / subcell, can be specified in the specification, or based on UE capability information values, or indicated in the MAC CE used for TCI state activation, or in other RRC signaling / MAC CE / DCI.

[1033] Figure 44 This is a diagram illustrating an example of the association between the TCI status indication field and the TRP / sub-cell according to method C1. Figure 44 In this configuration, the TCI states indicated / activated by the TCI state indication fields #1 to #X1 of the MAC CE for TCI state activation correspond to the TCI states of the first TRP / sub-cell. Furthermore, the TCI states indicated by the TCI state indication fields #X1+1 to #X1+X2 of the MAC CE for TCI state activation correspond to the TCI states of the second TRP / sub-cell. The X1 TCI states indicated / activated in the TCI state indication fields #1 to #X1 of the MAC CE for TCI state activation for the first TRP / sub-cell can also be mapped to more than one code point in the TCI field within the DCI. Additionally, the X2 TCI states indicated / activated in the TCI state indication fields #X1+1 to #X1+X2 of the MAC CE for TCI state activation for the second TRP / sub-cell can also be mapped to more than one code point in the TCI field within the DCI.

[1034] [Method C2]

[1035] The initial X1 TCI status indicator fields can also correspond to the first code point of the TCI field within the DCI, and the next X2 TCI status indicator fields can also correspond to the second code point of the TCI field within the DCI, ..., and so on, until the next X... M Each TCI status indication field can also correspond to the Mth code point of the TCI field within the DCI.

[1036] The number of TCI states for all code points mapped to the TCI field within the DCI can also be the same. That is, it can also be X1=X2=…=XM =X.

[1037] Specifically, X TRPs / subcells can also be indicated / activated. Each code point of the TCI field within the DCI can also be mapped to X TCI states and then to X TRPs / subcells. The X TCI state indication fields within the MAC CE corresponding to one code point of the TCI field within the DCI can also be mapped one-to-one with respect to the X TRPs / subcells.

[1038] The number of TCI states for different code points mapped to the TCI field within the DCI can be either the same or different. That is, X1, X2, ..., X M They can be the same or different.

[1039] Specifically, X TRPs / sub-cells can also be indicated / activated. Each code point i in the TCI field within the DCI can also be mapped to X. i Each TCI state is mapped to X TRPs / subcells. i One TRP / sub-cell. Corresponding to code point i in the TCI field within the DCI, and X in the MAC CE. i Each TCI status indicator field can also be relative to X. i Each TRP / subcell is mapped one-to-one.

[1040] The number of TRPs / subcells to which each code point is mapped (i.e., X) i The value), and which X code points are mapped to within the X TRP / subcells. i Each TRP / subcell can be indicated either in an active MAC CE for TCI status or in other RRC signaling / MAC CE / DCI.

[1041] Figure 45 This diagram illustrates an example of the association between the TCI status indication field and the TRP / sub-cell according to method C2. The TCI status indicated / activated by the TCI status indication field #1 of the MAC CE used for TCI status activation corresponds to the TCI status of the first TRP / sub-cell and is mapped to the first code point of the DCI. The TCI status indicated / activated by the TCI status indication field #2 of the MAC CE used for TCI status activation corresponds to the TCI status of the second TRP / sub-cell and is mapped to the second code point of the DCI. The TCI status indicated / activated by the TCI status indication field #X1 of the MAC CE used for TCI status activation corresponds to the TCI status of the X1th TRP / sub-cell and is mapped to the X1th code point of the DCI.

[1042] According to Implementation 1, it is possible to appropriately activate the TCI state using MAC CE in the case of TRP / subcell selection indication.

[1043] <Implementation Method 2>

[1044] This implementation involves group-based beam reporting.

[1045] [Premise 1]

[1046] As described in embodiments 1-2, in order to activate the MAC CE for multiple TCI states, the selection / activation of multiple TRPs / subcells can also be indicated by indicating at least one of multiple TRP / subcell indices and TRP / subcell group indices in the MAC CE or other signals (RRC signaling / MAC CE / DCI).

[1047] [Premise 2]

[1048] As described in embodiments 0.7 and 0.8, for both non-group-based and group-based beam reporting, the MAC CE (or DCI) can also indicate / activate multiple [CMR groups / TRPs / subcells] by indicating an index of multiple [CMR groups / TRPs / subcells] or an index of a combination of [[CMR groups / TRPs / subcells]].

[1049] The MAC CE / DCI used in premises 1 and 2 above can be either the same MAC CE / DCI or different MAC CEs.

[1050] For group-based beam reporting, the UE can also report at least one of the following: multiple [CMR group ID / TRP ID / subcell ID], bitmaps representing multiple [CMR groups / TRPs / subcells], and an index of [[CMR group combination] / [TRP / subcell group]].

[1051] The size of the [CMR Group ID / TRP ID / Subcell ID] field can also be the same as the size of the TRP / Subcell Index field in Method A1 of Embodiments 1-2. That is, Method A1 of Embodiments 1-2, after rewriting [TRP / Subcell Index] as [CMR Group ID / TRP ID / Subcell ID], can also be applied to this embodiment.

[1052] The size of the bitmap representing multiple [CMR groups / TRPs / subcells] can also be the same as the size of the bitmap representing multiple [TRPs / subcells] in method A1' of embodiments 1-2. That is, method A1' of embodiments 1-2, after rewriting [TRPs / subcells] as [CMR groups / TRPs / subcells], can also be applied to this embodiment.

[1053] The grouping of [[CMR group combination] / [TRP / subcell group]] can also be the same as the grouping of [TRP / subcell] in method A2 of embodiments 1-2. That is, method A2 of embodiments 1-2 after rewriting [TRP / subcell] as [CMR group / TRP / subcell] can also be applied to this embodiment. The size of the field of the index of [[CMR group combination] / [TRP / subcell group]] can also be the same as the size of the field of the TRP / subcell group index in method A2 of embodiments 1-2. That is, method A2 of embodiments 1-2 after rewriting [TRP / subcell group] as [[CMR group combination] / [TRP / subcell group]] can also be applied to this embodiment.

[1054] Each reported CMR can also be re-indexed within multiple CMRs of the reported [CMR group / TRP / subcell].

[1055] The size of the field representing each reported CMR can also be ceil(log2(N)). CMRperTRP )) bits. N CMRperTRP It can also be the number of CMRs set for a [CMR group / TRP / subcell] that is being reported.

[1056] The size of the field representing each reported CMR can also be ceil(log2(maxN)). CMRperTRP )) bits. maxN CMRperTRP It can also be the maximum number of CMRs set for a [CMR group / TRP / subcell]. maxN CMRperTRP It can be specified in the standard or it can be a value based on UE capability information.

[1057] When the UE reports P joint reporting groups of CMR according to Implementation 0.8, at least one of the following options 1 and 2 may also be applied.

[1058] [Option 1]

[1059] Alternatively, a combination of CMR groups / TRP / subcell groups can be reported via the UE, and this combination of CMR groups / TRP / subcell groups is applied to all of the P joint reporting groups.

[1060] Figure 46A and 46B This is a diagram illustrating an example of a CSI report following option 1. Figure 46A and 46B This indicates the mapping of CSI fields included in a CSI report used for CRI / RSRP or SSBRI / RSRP reporting. Figure 46A In this context, a CSI field can also contain any of the following: a joint reporting group ID, a beam index (CRI / SSBRI) corresponding to a CMR, or an ID of [[CMR group combination] / [TRP / subcell group]]. Figure 46A In the context of joint reporting groups #1 and #2, a combination of [[CMR groups] / [TRP / subcell groups]] can also be applied.

[1061] exist Figure 46B In this context, a CSI field can also contain a Joint Reporting Group ID, a beam index (CRI / SSBRI) corresponding to a CMR, or any of the following: [CMR Group ID / TRP ID / Subcell ID]. Figure 46B In the case of joint reporting groups #1 and #2, two [CMR groups / TRPs / subcells] can also be applied.

[1062] [Option 2]

[1063] Alternatively, a [[CMR group combination] / [TRP / subcell group]] can be reported by the UE, and this [[CMR group combination] / [TRP / subcell group]] is applied to each of the P joint reporting groups.

[1064] Figure 47A and 47B This is a diagram illustrating an example of a CSI report following option 2. Figure 47A and 47B This indicates the mapping of CSI fields included in a CSI report used for CRI / RSRP or SSBRI / RSRP reporting. Figure 47A In this context, a CSI field can also contain any of the following: a joint reporting group ID, a beam index (CRI / SSBRI) corresponding to a CMR, or an ID of [[CMR group combination] / [TRP / subcell group]]. Figure 47A Alternatively, for Joint Reporting Group #1, a combination of [[CMR groups] / [TRP / subcell groups]] can be applied to Joint Reporting Group #1, and for Joint Reporting Group #2, a combination of [[CMR groups] / [TRP / subcell groups]] can be applied to Joint Reporting Group #2.

[1065] exist Figure 47BIn this context, a CSI field can also contain a Joint Reporting Group ID, a beam index (CRI / SSBRI) corresponding to a CMR, or any of the following: [CMR Group ID / TRP ID / Subcell ID]. Figure 47B In the case of Joint Reporting Group #1, the two [CMR Group / TRP / Subcell] used for Joint Reporting Group #1 can also be applied, and the two [CMR Group / TRP / Subcell] used for Joint Reporting Group #2 can also be applied.

[1066] In a joint reporting group containing Q CMRs, and where Q [CMR group / TRP / subcell] are reported, the Q CMRs can also be mapped one-to-one with respect to the Q [CMR group / TRP / subcell].

[1067] Implementation 0.8 and Implementation 2 can also be enhanced so that the UE can simultaneously apply multiple CMRs (simultaneous transmission of multiple panels) within a joint reporting group for UL transmission.

[1068] According to Implementation 2, in group-based beam reporting, the UE can appropriately report CMR.

[1069] <Implementation Method 3>

[1070] This implementation involves the setting / instruction of SRS resource sets.

[1071] X SRS resource sets whose usage is set to codebook (CB) can also be configured in RRC signaling. Alternatively, X SRS resource sets whose usage is set to non-codebook (NCB) can also be configured in RRC signaling.

[1072] In this disclosure, the [SRS / SRS resource / SRS resource set] used for CB may also refer to the [SRS / SRS resource / SRS resource set] used for UL channel probing in UL transmission mode accompanying the precoder codebook.

[1073] In this disclosure, the [SRS / SRS resource / SRS resource set] used for NCB may also refer to the [SRS / SRS resource / SRS resource set] used for UL channel probing in UL transmission mode without precoder codebook.

[1074] For each CB / NCB PUSCH transmission, more than one SRS resource set may be indicated in the DCI (UL scheduling DCI) for scheduling UL transmissions. The PUSCH transmission may also be associated with more than one SRS resource set. The association of the PUSCH transmission with the SRS resource set may also follow at least one of options 1 and 2 below.

[1075] [Option 1]

[1076] More than one SRS resource set associated with a PUSCH transmission can also be indicated from X SRS resource sets configured via RRC signaling.

[1077] [Option 2]

[1078] Within the X SRS resource sets (set via RRC signaling), Y SRS resource sets can also be selected / activated via MAC CE / DCI. More than one SRS resource set associated with a PUSCH transmission can also be indicated from the Y SRS resource sets.

[1079] Within X SRS resource sets (set via RRC signaling), Y SRS resource sets can also be reported / requested by the UE via UCI / MACCE. Reporting of the Y SRS resource sets can also be triggered by the base station. Alternatively, reporting of the Y SRS resource sets can be initiated by the UE in a beam reporting event, etc. The base station can also send / feedback an ACK / NACK response to the UE's report / request. Following a UE report after receiving an ACK from the base station, the Y SRS resource sets can also be activated / selected.

[1080] To select / activate Y SRS resource sets via MAC CE / DCI, the same signals used for selecting / activating [CMR group / TRP / subcell] in embodiments 1 and 2 can also be used. Each SRS resource set can also be mapped relative to each [CMR group / TRP / subcell]. When a [CMR group / TRP / subcell] is selected / activated, the corresponding SRS resource set can also be selected / activated. Conversely, when an SRS resource set is selected / activated, the corresponding [CMR group / TRP / subcell] can also be selected / activated.

[1081] To represent Y SRS resource sets, at least one of [multiple SRS resource set IDs], [a bitmap representing multiple SRS resource sets], and [an index of [a group / combination of multiple SRS resource sets] can also be represented according to embodiments 1-2 described above. That is, embodiments 1-2, which rewrite [TRP / subcell] as [SRS resource set / TRP / subcell] and [TRP / subcell group] as [a group / combination of multiple SRS resource sets] / [TRP / subcell group], can also be applied to this embodiment.

[1082] Figure 48 This diagram illustrates an example of the settings / instructions for an SRS resource set following option 2. Figure 48 In this process, X SRS resource sets are configured via RRC signaling. Additionally, four SRS resource sets (SRS resource sets #1 to #4) are selected / activated via MAC CE / DCI, and one SRS resource set (SRS resource set #1) is selected / indicated from the four SRS resource sets via UL scheduling DCI for PUSCH transmission.

[1083] Implementation Method 3-1

[1084] Regarding the indication of [more than one SRS resource set (first SRS resource set)] in the UL scheduling DCI, the first SRS resource set can also be indicated from [N SRS resource sets (second SRS resource sets)] in the UL scheduling DCI. The number of the first SRS resource sets can also be indicated through the UL scheduling DCI. Furthermore, the number of the first SRS resource sets can also be associated with a PUSCH transmission.

[1085] The indication / setting of the number of the first SRS resource set can also follow at least one of the following options A1 to A3.

[1086] [Option A1]

[1087] K1 first SRS resource sets (K1 is one of all integers from 1 to M) can also be indicated, and K1 first SRS resource sets can also be associated with a PUSCH send.

[1088] (The maximum value that K1 can take is) M, which satisfies M≤N, and can also be a value set / indicated by RRC signaling / MAC CE / DCI. Alternatively, M can also be a value based on UE capability information. Furthermore, UE capability information can be capability per frequency (e.g., one or a combination of cell, band, band combination, BWP, component carrier, etc.) or capability per frequency range (e.g., Frequency Range 1 (FR1)), FR2, FR3, FR4, FR5, FR2-1, FR2-2). Alternatively, M can also be the same value as N by default (i.e., M=N).

[1089] [Option A2]

[1090] The number of first SRS resource sets can also be limited to either M1 or M2. In other words, either M1 or M2 first SRS resource sets can be indicated, and either M1 or M2 first SRS resource sets can be associated with a PUSCH transmission.

[1091] M1 and M2 may also comply with at least one of the following restrictions.

[1092] ·1≤M1≤N;

[1093] • 1 ≤ M² ≤ N;

[1094] M1 and M2 are values ​​specified in the specification, set / indicated via RRC signaling / MAC CE / DCI, or based on UE capability information.

[1095] By default, one of M1 and M2 is 1.

[1096] By default, one of M1 and M2 is N.

[1097] [Option A3]

[1098] K2 first SRS resource sets (K2 is one of the integers from 1 to N) can also be indicated, and K2 first SRS resource sets can also be associated with a PUSCH send.

[1099] K2 may also comply with at least one of the following restrictions.

[1100] • Any K2 satisfies 1≤K2≤N.

[1101] • The possible values ​​for K2 are those specified in the specification, set / indicated via RRC signaling / MAC CE / DCI, or based on UE capability information.

[1102] By default, one of the possible values ​​for K2 is 1.

[1103] By default, one of the possible values ​​for K2 is N.

[1104] Implementation Method 3-2

[1105] Regarding the indication of [more than one SRS resource set (first SRS resource set)] in the UL scheduling DCI, the first SRS resource set can also be indicated from [N SRS resource sets (second SRS resource sets)] in the UL scheduling DCI. This indication can also be the same as the indication of the SRS resource set indication field using existing 3GPP versions (e.g., Rel. 17 / 18). That is, each code point of the DCI field (DCI field) can also be mapped to [one SRS resource set] or [a combination of [multiple SRS resource sets]]. Multiple combinations of [multiple SRS resource sets] can also be indicated through the UL scheduling DCI. Furthermore, these multiple combinations of [multiple SRS resource sets] can also be associated with a PUSCH transmission.

[1106] When [an SRS resource set] is indicated (each code point of the DCI field is mapped to [an SRS resource set]), the indication of the first SRS resource set may also follow at least one of the following options B1 and B2.

[1107] [Option B1]

[1108] Alternatively, N code points of the DCI field can be used to indicate all SRS resource sets of N second SRS resource sets as the first SRS resource set.

[1109] [Option B2]

[1110] Alternatively, L code points of the DCI field can be used to indicate L SRS resource sets in N second SRS resource sets as first SRS resource sets.

[1111] In option B2 above, which SRS resource set is designated as the first SRS resource set can be specified in the specification or set / indicated via RRC signaling / MAC CE / DCI.

[1112] In option B2 above, the value of L can be specified in the specification, set / indicated by RRC signaling / MAC CE / DCI, or be a value based on UE capability information.

[1113] In [M] i [One SRS resource set] is indicated (each code point of the DCI field is mapped to [[M] iIn the case of a combination of SRS resource sets, the indication of the first SRS resource set may also follow at least one of the following options C1 and C2.

[1114] [Option C1]

[1115] Alternatively, you can use the C(N, M) field of the DCI. i ) code points to indicate [[M i All (C(N,M) SRS resource sets) i ( ) combinations).

[1116] [Option C2]

[1117] You can also use the L field of the DCI field. i One code point, in [[M] i All (C(N,M) SRS resource sets) i In the combination of ) items, the indicator [[M] i [A set of SRS resources] L i (A combination).

[1118] In option C2 above, which [[M] i The combination of SRS resource sets can be specified in the specification or set / indicated / updated via RRC signaling / MAC CE / DCI.

[1119] In option C2 above, L i The value can be specified in the specification, set / indicated via RRC signaling / MAC CE / DCI, or based on UE capability information. Furthermore, UE capability information can be capabilities per frequency (e.g., one or a combination of cell, band, band combination, BWP, component carrier, etc.) or capabilities per frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2).

[1120] [Changes to Implementation Method 3-2]

[1121] A bitmap can also be used to indicate the first SRS resource set in the UL scheduling DCI. The size of this bitmap can also be N bits. Each bit in this bitmap can also correspond to [an SRS resource set] / [[M] i A combination of SRS resource sets.

[1122] For example, setting the value of the bit corresponding to a specific SRS resource set to 1 can also mean that the specific SRS resource set is indicated / selected / activated. Setting the value of the bit corresponding to a specific SRS resource set to 0 can also mean that the specific SRS resource set is not indicated / selected / activated.

[1123] For example, setting the value of the bit corresponding to a specific SRS resource set to 0 can also mean that the specific SRS resource set is indicated / selected / activated. Setting the value of the bit corresponding to a specific SRS resource set to 1 can also mean that the specific SRS resource set is not indicated / selected / activated.

[1124] For example, with a specific [M] i The M corresponding to each SRS resource set i Setting a bit value to 1 can also indicate that a specific [M] bit is set to 1. i [A set of SRS resources] is indicated / selected / activated. With a specific [M] i The M corresponding to each SRS resource set i Setting a bit value to 0 can also indicate that a specific [M] bit is 0. i [SRS resource set] is not indicated / selected / activated.

[1125] For example, with a specific [M] i The M corresponding to each SRS resource set i Setting a bit value to 0 can also indicate that a specific [M] bit is 0. i [A set of SRS resources] is indicated / selected / activated. With a specific [M] i The M corresponding to each SRS resource set i Setting a bit value to 1 can also indicate that a specific [M] bit is set to 1. i [SRS resource set] is not indicated / selected / activated.

[1126] For example, with [[M] i The value of the bit corresponding to a specific combination of SRS resource sets is set to 1, which can also mean that the [M] i A specific combination of [a set of SRS resources] is indicated / selected / activated. [M] i The value of the bit corresponding to a specific combination of SRS resource sets is set to 0, which can also mean that the [[M] i A specific combination of SRS resource sets is not indicated / selected / activated.

[1127] For example, with [[M] i The value of the bit corresponding to a specific combination of SRS resource sets is set to 0, which can also mean that the [[M] iA specific combination of [a set of SRS resources] is indicated / selected / activated. [M] i The value of the bit corresponding to a specific combination of SRS resource sets is set to 1, which can also mean that the [M] i A specific combination of SRS resource sets is not indicated / selected / activated.

[1128] Each bit in the bitmap above corresponds to [[M] i In the case of a combination of SRS resource sets, which bit corresponds to which [M]? i The combination of SRS resource sets can be specified in the specification or set / indicated / updated via RRC signaling / MACCE / DCI.

[1129] According to implementation method 3, the SRS resource set can be set / instructed appropriately.

[1130] <Implementation Method 4>

[1131] This implementation relates to the setting / instruction of groups (CORESET groups, CORESET pools) for CORESETs in a multi-DCI multi-TRP framework.

[1132] X CORESET groups can also be configured in RRC signaling.

[1133] The UE may also monitor more than one CORESET group by following at least one of options 1 and 2 below. In this disclosure, monitoring a CORESET group may also be rewritten as monitoring the PDCCH within a CORESET group.

[1134] [Option 1]

[1135] The UE can also monitor all of the X CORESET groups that are set via RRC signaling.

[1136] [Option 2]

[1137] The UE can also monitor Y CORESET groups selected / activated via MAC CE / DCI out of X CORESET groups set by RRC signaling.

[1138] Within the X CORESET groups (set via RRC signaling), Y CORESET groups can also be reported / requested by the UE via UCI / MACCE. Reporting of the Y CORESET groups can also be triggered by the base station. Alternatively, reporting of the Y CORESET groups can be initiated by the UE through beam reporting, etc. The base station can also send / feedback an ACK / NACK response to the UE's report / request. Following a UE report after receiving an ACK from the base station, the Y CORESET groups can also be activated / selected.

[1139] To select / activate Y CORESET groups via MAC CE / DCI, the same signals used for selecting / activating [CMR group / TRP / subcell / SRS resource set] in implementations 1 / 2 / 3 can also be used. Each CORESET group can also be mapped one-to-one with each [CMR group / TRP / subcell / SRS resource set]. When a [CMR group / TRP / subcell / SRS resource set] is selected / activated, the corresponding CORESET group can also be selected / activated. Conversely, when a CORESET group is selected / activated, the corresponding [CMR group / TRP / subcell / SRS resource set] can also be selected / activated.

[1140] A CORESET group can also be mapped to multiple [CMR groups / TRPs / subcells / SRS resource sets].

[1141] Multiple CORESET groups can also be mapped to a [CMR group / TRP / subcell / SRS resource set].

[1142] To represent Y CORESET groups, at least one of [IDs of multiple CORESET groups (CORESET group IDs)], [bitmaps representing multiple CORESET groups], and [indexes of [combinations of multiple CORESET groups]] can also be represented according to embodiments 1-2 described above. That is, embodiments 1-2, which rewrite [TRP / subcell] as [CORESET group / TRP / subcell] and [TRP / subcell group] as [[combinations of multiple CORESET groups] / [TRP / subcell group]], can also be applied to this embodiment.

[1143] According to implementation method 4, in the multi-DCI multi-TRP framework, the UE can appropriately set / instruct the CORESET group.

[1144] <Implementation Method 5>

[1145] This implementation involves setting / indicating the TCI status.

[1146] Within the unified TCI framework, base stations can also use RRC signaling / MAC CE / DCI to indicate the TCI status. This TCI status indication can also be applied to [multiple DL / UL channels] / [multiple reference signals (RS)].

[1147] It is also possible to indicate X indicator TCI states. Which one or more of the X indicator TCI states can be indicated via MAC CE / DCI, per [SRS resource set / SRS resource / CSI-RS resource set / CSI-RS resource / CORESET / PUCCH resource / PUCCH resource set].

[1148] For example, for SP-SRS / SP-CSI-RS, the indicator TCI state applied to SP-SRS / SP-CSI-RS can also be indicated in the MAC CE for TCI state activation; for A-SRS / A-CSI-RS, the indicator TCI state applied to A-SRS / A-CSI-RS can also be indicated in the DCI that triggers the A-SRS / A-CSI-RS.

[1149] According to embodiment 5, the TCI status can be set / indicated appropriately.

[1150] <Supplement>

[1151] <<Information Notification to UE>>

[1152] The notification of any information from the network (NW) (e.g., base station (BS)) to the UE in the above-described embodiments (in other words, the reception of any information from the BS in the UE) can also be performed using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PDCCH, PDSCH, reference signals), or combinations thereof.

[1153] In the case where the above notification is made via MAC CE, the MAC CE can also be identified by including a new Logical Channel ID (LCID) in the MAC subheader that is not specified in the existing standard.

[1154] When the above notification is made through a DCI, the notification can also be made through specific fields of the DCI, the Radio Network Temporary Identifier (RNTI) used in the scrambling of the Cyclic Redundancy Check (CRC) bits assigned to the DCI, the format of the DCI, etc.

[1155] Furthermore, the notification of any information to the UE in the above embodiments can also be carried out periodically, semi-persistently, or non-periodically.

[1156] <<Notifications from UE>>

[1157] The notification of any information from the UE to the NW in the above embodiments (in other words, the transmission / reporting of any information from the UE to the BS) can also be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MACCE), specific signals / channels (e.g., PUCCH, PUSCH, PRACH, reference signals), or combinations thereof.

[1158] In the case where the above notification is delivered via MAC CE, the MAC CE can also be identified by including a new LCID in the MAC sub-header that is not specified in the existing standard.

[1159] In cases where the above notification is sent via UCI, the above notification may also be sent using PUCCH or PUSCH.

[1160] Furthermore, the notification of any information from the UE in the above embodiments can also be carried out periodically, semi-persistently, or non-periodically.

[1161] <<Application of Each Implementation Method>>

[1162] In the UE / BS, specific processing / operation / control / conception / information regarding at least one of the above embodiments may also be applied (used) if any one or more of the following conditions are met:

[1163] • High-level parameters are set to represent the specific processing / operation / control / conception / information mentioned above;

[1164] The specific processing / operation / control / concept / information mentioned above is determined based on associated high-level parameters;

[1165] The aforementioned specific processing / operation / control / conception / information is specified / activated / triggered via MAC CE / DCI / UCI / resource / channel / RS;

[1166] • The report or support indicates the specific processing / operation / control / conception / information (or, associated) specific UE capability mentioned above.

[1167] The application of the aforementioned specific processing / operation / control / conception / information is judged based on specific conditions.

[1168] The aforementioned specific UE capabilities can also represent at least one of the following:

[1169] • Supports the specific processing / operation / control / concept / information mentioned above.

[1170] • The UE supports cell-free, group-based, and non-group-based beam reporting.

[1171] • The UE supports transmission of a single TRP / subcell in a cell-free environment (single TRP transmission).

[1172] • The UE supports joint transmission of multiple TRPs / subcells based on a single DCI in cellless environments (joint transmission of multiple TRPs based on a single DCI).

[1173] • The UE supports joint transmission of multiple TRPs / subcells based on multiple DCI in cellless environments (joint transmission of multiple TRPs based on multiple DCI).

[1174] • Supported CMRs / CMR groups / Joint reporting groups / CMRs in each CMR group / Number of CMRs in each joint reporting group.

[1175] Furthermore, the aforementioned specific UE capabilities can be capabilities applied across the entire frequency range (commonly independent of frequency), capabilities for each frequency (e.g., one or a combination of cells, bands, band combinations, BWPs, component carriers, etc.), capabilities for each frequency range (e.g., Frequency Range 1 (FR1)), FR2, FR3, FR4, FR5, FR2-1, FR2-2), capabilities for each subcarrier spacing (SCS) or capabilities for each feature set (FS) or feature set per component-carrier (FSPC)

[1176] Furthermore, the aforementioned specific UE capabilities can be either capabilities that apply to all duplex modes (commonly regardless of the duplex mode) or capabilities that apply to each duplex mode (e.g., Time Division Duplex (TDD) and Frequency Division Duplex (FDD)).

[1177] If the above conditions are not met, the UE / BS may also follow the operations specified in the existing 3GPP version.

[1178] (Postscript)

[1179] With respect to one embodiment of this disclosure, the following invention is noted.

[1180] [Postscript 1]

[1181] The terminal has:

[1182] The receiving unit receives a Medium Access Control Element (MAC CE) indicating the states of multiple Transmission Configuration Indications (TCIs) from one or more transmit / receive points, and specific information indicating the one or more transmit / receive points; and

[1183] The control unit, based on the MAC CE and the specific information, determines one or more TCI states to be used in transmission and reception.

[1184] [Postscript 2]

[1185] The terminal as described in Appendix 1, wherein,

[1186] When the specific information indicates a transmit / receive point, the control unit associates the transmit / receive point with the plurality of TCI states.

[1187] [Postscript 3]

[1188] The terminal as described in Appendix 1 or Appendix 2, wherein,

[1189] The control unit determines one or more TCI states based on an index representing a group of multiple transmitting and receiving points.

[1190] [Postscript 4]

[1191] The terminal as described in any one of Annexes 1 to 3, wherein,

[1192] When the specific information indicates the first transmit / receive point and the second transmit / receive point, the control unit associates the first transmit / receive point with a first number of TCI states and associates the second transmit / receive point with a second number of TCI states.

[1193] (Postscript)

[1194] With respect to one embodiment of this disclosure, the following invention is noted.

[1195] [Postscript 1]

[1196] The terminal has:

[1197] The receiving unit, when group-based beam reporting is configured, receives information indicating multiple Channel Measurement Resource (CMR) groups; and

[1198] The control unit controls the transmission of multiple joint report groups for the multiple CMR groups.

[1199] Each of the plurality of joint reporting groups represents a plurality of CMRs within the plurality of CMR groups.

[1200] [Postscript 2]

[1201] The terminal as described in Appendix 1, wherein,

[1202] The control unit controls the reporting of all, combined CMR groups within the plurality of joint reporting groups.

[1203] [Postscript 3]

[1204] The terminal as described in Appendix 1 or Appendix 2, wherein,

[1205] The control unit controls the reporting of combinations of CMR groups applied to each of the plurality of joint reporting groups.

[1206] [Postscript 4]

[1207] The terminal as described in any one of Annexes 1 to 3, wherein,

[1208] If the number of CMRs in a specific joint reporting group included in the plurality of joint reporting groups is equal to the number of reported CMR groups in the plurality of CMR groups, the control unit maps the CMRs in the specific joint reporting group to the reported CMR groups one-to-one.

[1209] (Postscript)

[1210] With respect to one embodiment of this disclosure, the following invention is noted.

[1211] [Postscript 1]

[1212] The terminal has:

[1213] The receiving unit receives higher-layer signaling for setting X sets of sounding reference signals (SRS) resources, and downlink control information (DCI) indicating at least a portion of the X sets of SRS resources; and

[1214] The control unit controls the transmission of the Physical Uplink Shared Channel (PUSCH) associated with the at least a portion of the SRS resource set.

[1215] [Postscript 2]

[1216] The terminal as described in Appendix 1, wherein,

[1217] The receiving unit receives information indicating Y SRS resource sets within the X SRS resource sets.

[1218] At least a portion of the SRS resource set is selected from the Y SRS resource sets.

[1219] [Postscript 3]

[1220] The terminal as described in Appendix 1 or Appendix 2, wherein,

[1221] The control unit determines that the transmit / receive point corresponding to each of the at least a portion of the SRS resource set is activated.

[1222] [Postscript 4]

[1223] The terminal as described in any one of Annexes 1 to 3, wherein,

[1224] The specific code points of the DCI correspond to a specific SRS resource set, or a specific combination of multiple SRS resource sets.

[1225] (Postscript)

[1226] With respect to one embodiment of this disclosure, the following invention is noted.

[1227] [Postscript 1]

[1228] The terminal has:

[1229] The receiving unit receives high-level signaling that sets X control resource sets (CORESET) groups; and

[1230] The control unit monitors the Physical Downlink Control Channel (PDCCH) in at least a portion of the X CORESET groups.

[1231] [Postscript 2]

[1232] The terminal as described in Appendix 1, wherein,

[1233] The receiving unit receives information indicating Y CORESET groups out of the X CORESET groups.

[1234] At least a portion of the CORESET groups are selected from the Y CORESET groups.

[1235] [Postscript 3]

[1236] The terminal as described in Appendix 1 or Appendix 2, wherein,

[1237] The control unit determines that each of the at least a portion of the CORESET groups has a corresponding transmit / receive point activated.

[1238] [Postscript 4]

[1239] The terminal as described in any one of Annexes 1 to 3, wherein,

[1240] At least a portion of the CORESET group is indicated by a bitmap having X bits.

[1241] (Wireless communication system)

[1242] The structure of a wireless communication system according to one embodiment of this disclosure will now be described. In this wireless communication system, communication is performed using any one or a combination of the wireless communication methods according to the above embodiments of this disclosure.

[1243] Figure 49 This is a diagram illustrating an example of the schematic structure of a wireless communication system according to one embodiment. The wireless communication system 1 (also referred to simply as System 1) may also be a system that uses Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5GNR) as standardized by the Third Generation Partnership Project (3GPP).

[1244] Furthermore, the wireless communication system 1 can also support dual connectivity between multiple radio access technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[1245] In EN-DC, the LTE (E-UTRA) base station (eNB) is the Master Node (MN), and the NR base station (gNB) is the Secondary Node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[1246] Wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (e.g., MN and SN are dual connectivity between NR base stations (gNB) (NR-NR Dual Connectivity (NN-DC))).

[1247] The wireless communication system 1 may also include a base station 11 forming a macro cell C1 with a relatively wide coverage area, and a base station 12 (12a-12c) configured within the macro cell C1 and forming a small cell C2 narrower than the macro cell C1. The user terminal 20 may also be located within at least one cell. The configuration, number, shape, size, etc., of each cell and the user terminal 20 are not limited to the manner shown in the figure. Hereinafter, without distinguishing between base stations 11 and 12, they will be collectively referred to as base station 10.

[1248] Alternatively, the wireless communication system 1 can also utilize Multiple Input Multiple Output (MIMO). For example, a cell can be formed by one antenna / base station 10 or by multiple antennas / base stations 10. A [virtual] cell (e.g., also referred to as a supercell) can also be composed of multiple [virtual] cells (e.g., also referred to as subcells). A supercell can also be equivalent to a cell with a fixed physical range, and a subcell can also be equivalent to a cell with a semi-static / dynamically varying physical range. In this case, the wireless communication system 1 can also be referred to as a cellless system.

[1249] User terminal 20 may also connect to at least one of multiple base stations 10. User terminal 20 may also utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

[1250] Each CC can also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). Macro cell C1 can also be included in FR1, and small cell C2 can also be included in FR2. For example, FR1 can also be a frequency band below 6 GHz (sub-6 GHz), and FR2 can also be a frequency band above 24 GHz (above-24 GHz). In addition, the frequency bands, definitions, etc. of FR1 and FR2 are not limited to these; for example, FR1 can also correspond to a frequency band higher than FR2.

[1251] In addition, in each CC, the user terminal 20 may also use at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) for communication.

[1252] Multiple base stations 10 can also be connected via wired (e.g., fiber optic based on the Common Public Radio Interface (CPRI), X2 / Xn interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, base station 11, which is equivalent to a host station, can also be referred to as an Integrated Access Backhaul (IAB) donor, and base station 12, which is equivalent to a relay station, can also be referred to as an IAB node.

[1253] Base station 10 may also be connected to core network 30 via other base stations 10 or directly. Core network 30 may include, for example, at least one of Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[1254] The core network 30 may also include, for example, user plane functions (UPF), access and mobility management functions (AMF), session management functions (SMF), unified data management (UDM), application functions (AF), data network (DN), location management functions (LMF), and network functions (NF) such as operation, administration and maintenance (OAM). Alternatively, multiple functions can be provided through a single network node. Furthermore, communication with external networks (e.g., the Internet) can also be achieved via the DN.

[1255] User terminal 20 can also be a terminal that supports at least one of the following communication methods: LTE, LTE-A, 5G, etc.

[1256] In wireless communication system 1, wireless access methods based on Orthogonal Frequency Division Multiplexing (OFDM) can also be used. For example, in at least one of the downlink (DL) and uplink (UL) links, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), and Single Carrier Frequency Division Multiple Access (SC-FDMA) can also be used.

[1257] The wireless access method can also be referred to as a waveform. In addition, in the wireless communication system 1, other wireless access methods (e.g., other single-carrier transmission methods, other multi-carrier transmission methods) can also be used in the wireless access methods of UL and DL.

[1258] As a downlink channel, the wireless communication system 1 can also use downlink shared channels (Physical Downlink Shared Channel (PDSCH)), broadcast channels (Physical Broadcast Channel (PBCH)), downlink control channels (Physical Downlink Control Channel (PDCCH)) and so on, which are shared among the user terminals 20.

[1259] In addition, as uplink channels, the wireless communication system 1 may also use uplink shared channels (Physical Uplink Shared Channel (PUSCH)), uplink control channels (Physical Uplink Control Channel (PUCCH)), random access channels (Physical Random Access Channel (PRACH)) and so on, which are shared by each user terminal 20.

[1260] User data, high-level control information, and System Information Blocks (SIBs) are transmitted via the PDSCH. User data and high-level control information can also be transmitted via the PUSCH. In addition, Master Information Blocks (MIBs) can also be transmitted via the PBCH.

[1261] Lower-layer control information can also be transmitted via PDCCH. This lower-layer control information may include, for example, downlink control information (DCI), which includes scheduling information for at least one of PDSCH and PUSCH.

[1262] Additionally, the DCI that schedules PDSCH can also be called DL allocation, DL DCI, etc., and the DCI that schedules PUSCH can also be called UL authorization, UL DCI, etc. Furthermore, PDSCH can be rewritten as DL data, and PUSCH can be rewritten as UL data.

[1263] In PDCCH detection, a Control Resource Set (CORESET) and a search space can also be utilized. A CORESET corresponds to the resources used to search for DCIs. The search space corresponds to the search area and search method for PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor CORESETs associated with a specific search space based on search space settings.

[1264] A search space can also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces can also be referred to as a search space set. In addition, the terms "search space", "search space set", "search space setting", "search space set setting", "CORESET", and "CORESET setting" in this disclosure can be rewritten interchangeably.

[1265] The PUCCH can also transmit uplink control information (uplink control information (UCI)) that includes at least one of the following: Channel State Information (CSI), delivery confirmation information (e.g., also known as Hybrid Automatic Repeat Request ACK Knowledge (HARQ-ACK), ACK / NACK, etc.), and Scheduling Request (SR). The PRACH can also transmit random access preambles used for establishing connections with the cell.

[1266] In addition, in this disclosure, downlink, uplink, etc., may be described without the word "link". Furthermore, various channels may be described without the word "physical".

[1267] In wireless communication system 1, synchronization signals (SS) and downlink reference signals (DL-RS) can also be transmitted. In wireless communication system 1, DL-RS can also transmit cell-specific reference signals (CRS), channel state information reference signals (CSI-RS), demodulation reference signals (DMRS), positioning reference signals (PRS), and phase tracking reference signals (PTRS).

[1268] Synchronization signals can be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block containing SS (PSS, SSS) and PBCH (and DMRS for PBCH) can also be called an SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. can also be called reference signals.

[1269] Furthermore, in wireless communication system 1, the uplink reference signal (UL-RS) can also transmit measurement reference signals (sounding reference signals (SRS)) and demodulation reference signals (DMRS). Additionally, DMRS can also be referred to as user terminal-specific reference signals (UE-specific reference signals).

[1270] (Base station)

[1271] Figure 50 This diagram illustrates an example of the structure of a base station according to one embodiment. The base station 10 includes a control unit 110, a transmit / receive unit 120, a transmit / receive antenna 130, and a transmission path interface (transmission line interface) 140. Alternatively, the control unit 110, the transmit / receive unit 120, the transmit / receive antenna 130, and the transmission path interface 140 may each be provided in more than one manner.

[1272] Furthermore, while this example primarily illustrates the functional blocks of the characteristic portions of this embodiment, it can also be envisioned that the base station 10 also possesses other functional blocks required for wireless communication. Some of the processing of each unit described below may also be omitted.

[1273] The control unit 110 performs overall control of the base station 10. The control unit 110 can be composed of a controller, control circuit, etc., which are described based on common knowledge in the art to which this disclosure pertains.

[1274] The control unit 110 can also control signal generation and scheduling (e.g., resource allocation, mapping). The control unit 110 can also control transmission, reception, and measurement using the transmit / receive unit 120, transmit / receive antenna 130, and transmission path interface 140. The control unit 110 can also generate data, control information, sequences, etc., to be transmitted as signals and forward them to the transmit / receive unit 120. The control unit 110 can also perform call processing (setting, releasing, etc.) of the communication channel, status management of the base station 10, and management of wireless resources.

[1275] The transmitting / receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting / receiving unit 120 may be composed of transmitters / receivers, RF circuits, baseband circuits, filters, phase shifters, measurement circuits, transmitting / receiving circuits, etc., as described based on common knowledge in the art to which this disclosure pertains.

[1276] The transmitting and receiving unit 120 can be configured as a single integrated transmitting and receiving unit, or it can be composed of a transmitting unit and a receiving unit. The transmitting unit can also be composed of a transmitting processing unit 1211 and an RF unit 122. The receiving unit can also be composed of a receiving processing unit 1212, an RF unit 122, and a measurement unit 123.

[1277] The transmitting and receiving antenna 130 can be constructed from an antenna, such as an array antenna, as described based on common knowledge in the art to which this disclosure pertains.

[1278] The transmitting / receiving unit 120 can also transmit the aforementioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 120 can also receive the aforementioned uplink channel, uplink reference signal, etc.

[1279] The transmitting and receiving unit 120 may also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc., to form at least one of the transmitting beam and the receiving beam.

[1280] The transmitting and receiving unit 120 (transmitting processing unit 1211) may, for example, perform processing at the Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer (e.g., RLC retransmission control), and Medium Access Control (MAC) layer (e.g., HARQ retransmission control) on the data and control information obtained from the control unit 110, and generate a bit string to be transmitted.

[1281] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform transmission processing such as channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), Discrete Fourier Transform (DFT) processing (as needed), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output the baseband signal.

[1282] The transmitting and receiving unit 120 (RF unit 122) can also perform modulation, filtering, amplification, etc. on the baseband signal to the wireless frequency band, and transmit the wireless frequency band signal through the transmitting and receiving antenna 130.

[1283] On the other hand, the transmitting and receiving unit 120 (RF unit 122) can also amplify, filter, and demodulate the signals of the wireless frequency band received through the transmitting and receiving antenna 130 into the baseband signal.

[1284] The transmitting and receiving unit 120 (receiving and processing unit 1212) can also perform receiving and processing on the acquired baseband signal, including analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, to acquire user data, etc.

[1285] The transmitting / receiving unit 120 (measurement unit 123) can also perform measurements related to the received signal. For example, the measurement unit 123 can also perform radio resource management (RRM) measurements, channel state information (CSI) measurements, etc., based on the received signal. The measurement unit 123 can also measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results can also be output to the control unit 110.

[1286] The transmission path interface 140 can also transmit and receive signals (backhaul signaling) between the device included in the core network 30 (e.g., the network node providing the NF), other base stations 10, etc., and can also acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[1287] In addition, the transmitting unit and receiving unit of the base station 10 in this disclosure may also be composed of at least one of a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission path interface 140.

[1288] Additionally, base station 10 can be divided into three elements: Radio Unit (RU), Distributed Unit (DU), and Central Unit (CU). For example, the RU can implement RF processing (digital beamforming, digital-to-analog conversion, analog beamforming, etc.) and lower-level physical layer functions (precoding, IFFT, FFT, etc.). The DU can implement higher-level physical layer functions (from coding to resource element mapping, etc.), MAC layer functions, and RLC layer functions. The CU can implement PDCP layer, Service Data Adaptation Protocol (SDAP) layer, and RRC layer functions.

[1289] In this disclosure, base station 10 may include a single device that implements all the functions of RU, DU, and CU, or it may include multiple devices that implement a portion of the functions of RU, DU, and CU respectively and are interconnected. In this disclosure, base station 10 and RU / DU / CU may also be rewritten interchangeably.

[1290] The transmit / receive unit 120 may also transmit Medium Access Control (MAC) elements (MAC CEs) indicating multiple Transmission Configuration Indication (TCI) states from one or more transmit / receive points, and specific information (e.g., TRP / subcell index) indicating the one or more transmit / receive points. The control unit 110 may also instruct the determination of one or more TCI states to be used in transmit / receive based on the MAC CE and the specific information.

[1291] The transmit / receive unit 120 can also transmit information indicating multiple Channel Measurement Resource (CMR) groups when group-based beam reporting is set. The control unit 110 can also control the reception of multiple joint report groups for the multiple CMR groups. Each of the multiple joint report groups can also represent multiple CMRs within the multiple CMR groups.

[1292] The transmitting / receiving unit 120 may also transmit higher-layer signaling for setting X sets of sounding reference signals (SRS) resources, and downlink control information (DCI) indicating at least a portion of the X sets of SRS resources. The control unit 110 may also control the reception of the Physical Uplink Shared Channel (PUSCH) associated with the at least a portion of the SRS resource sets.

[1293] The transmitting / receiving unit 120 can also transmit higher-layer signaling that sets X control resource sets (CORESET) groups. The control unit 110 can also control the transmission of the physical downlink control channel (PDCCH) in at least a portion of the X CORESET groups.

[1294] (User terminal)

[1295] Figure 51 This diagram illustrates an example of the structure of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Alternatively, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided as one or more.

[1296] Furthermore, while this example primarily illustrates the functional blocks of the characteristic portions of this embodiment, it is also conceivable that the user terminal 20 may also have other functional blocks required for wireless communication. Some of the processing of each unit described below may also be omitted.

[1297] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be composed of a controller, control circuit, etc., which are described based on common knowledge in the technical field to which this disclosure pertains.

[1298] The control unit 210 can also control signal generation, mapping, etc. The control unit 210 can also control transmission, reception, measurement, etc., using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 can also generate data, control information, sequences, etc., to be transmitted as signals and forward them to the transmission / reception unit 220.

[1299] The transmitting / receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting / receiving unit 220 may be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common knowledge in the art to which this disclosure pertains.

[1300] The transmitting and receiving unit 220 can be configured as a single integrated transmitting and receiving unit, or it can be composed of a transmitting unit and a receiving unit. The transmitting unit can also be composed of a transmitting processing unit 2211 and an RF unit 222. The receiving unit can also be composed of a receiving processing unit 2212, an RF unit 222, and a measurement unit 223.

[1301] The transmitting and receiving antenna 230 can be constructed from an antenna, such as an array antenna, as described based on common knowledge in the art to which this disclosure pertains.

[1302] The transmitting / receiving unit 220 can also receive the downlink channel, synchronization signal, downlink reference signal, etc., mentioned above. The transmitting / receiving unit 220 can also transmit the uplink channel, uplink reference signal, etc., mentioned above.

[1303] The transmitting and receiving unit 220 may also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc., to form at least one of the transmitting beam and the receiving beam.

[1304] The transmitting and receiving unit 220 (transmitting processing unit 2211) may, for example, perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control) on the data and control information obtained from the control unit 210, and generate the bit string to be transmitted.

[1305] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be transmitted, and output the baseband signal.

[1306] Furthermore, whether or not to apply DFT processing can be based on the settings of transform precoding. For a certain channel (e.g., PUSCH), if transform precoding is enabled, the transmit / receive unit 220 (transmit processing unit 2211) can perform DFT processing as described above in order to transmit the channel using the DFT-s-OFDM waveform. If not, the transmit / receive unit 220 (transmit processing unit 2211) can perform the above transmission processing without performing DFT processing.

[1307] The transmitting and receiving unit 220 (RF unit 222) can also perform modulation, filtering, amplification, etc. on the baseband signal to the wireless frequency band, and transmit the wireless frequency band signal through the transmitting and receiving antenna 230.

[1308] On the other hand, the transmitting and receiving unit 220 (RF unit 222) can also amplify, filter, demodulate, etc., the signals of the wireless frequency band received by the transmitting and receiving antenna 230.

[1309] The transmitting and receiving unit 220 (receiving and processing unit 2212) can also perform receiving and processing on the acquired baseband signal, such as analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, to acquire user data.

[1310] The transmitting / receiving unit 220 (measurement unit 223) can also perform measurements related to the received signal. For example, the measurement unit 223 can also perform RRM measurements, CSI measurements, etc., based on the received signal. The measurement unit 223 can also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results can also be output to the control unit 210.

[1311] Additionally, the measurement unit 223 can also derive channel measurements for CSI calculation based on channel measurement resources. Channel measurement resources can be, for example, non-zero power (NZP) CSI-RS resources. Furthermore, the measurement unit 223 can also derive interference measurements for CSI calculation based on interference measurement resources. Interference measurement resources can be at least one of NZP CSI-RS resources for interference measurement, CSI-Interference Measurement (IM) resources, etc. Additionally, CSI-IM can also be referred to as CSI-Interference Management (IM), and can be interchanged with zero power (ZP) CSI-RS. Furthermore, in this disclosure, CSI-RS, NZPCSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc., can also be interchanged.

[1312] Alternatively, the transmitting and receiving units of the user terminal 20 in this disclosure may also be composed of at least one transmitting / receiving unit 220 and transmitting / receiving antenna 230.

[1313] The transmit / receive unit 220 may also receive a Medium Access Control Element (MAC CE) indicating multiple Transmission Configuration Indication (TCI) states from one or more transmit / receive points, and specific information indicating the one or more transmit / receive points (e.g., TRP / subcell index). The control unit 210 may also determine one or more TCI states to use in transmit / receive based on the MAC CE and the specific information.

[1314] When the specific information indicates a transmit / receive point, the control unit 210 can also associate the transmit / receive point with the plurality of TCI states.

[1315] The control unit 210 may also determine one or more TCI states based on an index representing a group of multiple transmit / receive points (e.g., TRP / subcell group index).

[1316] When the specific information indicates the first transmit / receive point and the second transmit / receive point, the control unit 210 may also associate the first transmit / receive point with a first number (e.g., X1) of TCI states and associate the second transmit / receive point with a second number (e.g., X2) of TCI states.

[1317] The transmit / receive unit 220 can also receive information indicating multiple Channel Measurement Resource (CMR) groups (e.g., CMR group indexes) when group-based beam reporting is set. The control unit 210 can also control the transmission of multiple joint report groups for the multiple CMR groups. Each of the multiple joint report groups can also represent multiple CMRs within the multiple CMR groups.

[1318] The control unit 210 can also control the reporting of all, combined CMR groups within the plurality of joint reporting groups.

[1319] The control unit 210 can also control the reporting of combinations of CMR groups applied to each of the plurality of joint reporting groups.

[1320] If the number of CMRs in a specific joint reporting group included in the plurality of joint reporting groups is equal to the number of reported CMR groups in the plurality of CMR groups, the control unit 210 may also map the CMRs in the specific joint reporting group to the reported CMR groups one-to-one.

[1321] The transmit / receive unit 220 can also receive higher-layer signaling for setting X sets of sounding reference signals (SRS) resources, and downlink control information (DCI) indicating at least a portion of the X sets of SRS resources. The control unit 210 can also control the transmission of the Physical Uplink Shared Channel (PUSCH) associated with the at least a portion of the SRS resource sets.

[1322] The transmitting and receiving unit 220 can also receive information indicating Y SRS resource sets among the X SRS resource sets. At least a portion of the SRS resource sets can also be selected from the Y SRS resource sets.

[1323] The control unit 210 can also determine that each of the at least a portion of the SRS resource sets has a corresponding transmit / receive point activated.

[1324] The specific code points of the DCI can also correspond to a specific SRS resource set or a specific co...

Claims

1. A terminal, comprising: The receiving unit, when group-based beam reporting is configured, receives information indicating multiple channel measurement resource groups, i.e., CMR groups; and The control unit controls the transmission of multiple joint report groups for the multiple CMR groups. Each of the plurality of joint reporting groups represents a plurality of CMRs within the plurality of CMR groups.

2. The terminal according to claim 1, wherein, The control unit controls the reporting of all, combined CMR groups within the plurality of joint reporting groups.

3. The terminal according to claim 1, wherein, The control unit controls the reporting of combinations of CMR groups applied to each of the plurality of joint reporting groups.

4. The terminal according to claim 1, wherein, If the number of CMRs in a specific joint reporting group included in the plurality of joint reporting groups is equal to the number of reported CMR groups in the plurality of CMR groups, the control unit maps the CMRs in the specific joint reporting group to the reported CMR groups one-to-one.

5. A wireless communication method, which is a wireless communication method for a terminal, comprising: The step of receiving information indicating multiple Channel Measurement Resource Groups (CMR groups) when group-based beam reporting is configured; and The steps for controlling the transmission of multiple joint report groups for the multiple CMR groups, Each of the plurality of joint reporting groups represents a plurality of CMRs within the plurality of CMR groups.

6. A base station, comprising: The transmitting unit, when group-based beam reporting is configured, transmits information indicating multiple channel measurement resource groups, i.e., CMR groups; and The control unit controls the reception of multiple joint report groups for the multiple CMR groups. Each of the plurality of joint reporting groups represents a plurality of CMRs within the plurality of CMR groups.

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