Terminal, wireless communication method and base station

Abstract

A terminal involved in one embodiment of the present disclosure includes: a control unit that applies multiple spatial relationship information, i.e., multiple SRIs, to multiple physical uplink control channel resources, i.e., multiple PUCCH resources; and a transmission unit that uses spatial domain transmission filters based on the multiple spatial relationship information to transmit uplink control information in the multiple PUCCH resources. According to one embodiment of the present disclosure, appropriate PUCCH repetitive transmission can be achieved.

Description

Technical Field

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

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of further high-speed data rate, low latency, etc. (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) is standardized for the purpose of further increasing the capacity and sophistication of LTE (Release (Rel.) 8, 9)).

[0003] Successor systems of LTE (also known as, for example, 5th generation mobile communication system (5G), 5G+(plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 and later, etc.) are also being studied.

[0004] Prior art literature

[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] Problems to be solved by the invention

[0008] In Rel.15NR, the user terminal (user terminal, User Equipment (UE)) can also be set with spatial relationship information (also called Spatial Relation Information (SRI)) related to the Physical Uplink Control Channel (PUCCH). In Rel-15 NR, it is controlled so that at a certain time, one PUCCH SRI becomes active relative to one PUCCH resource.

[0009] In NR, in order to improve the reliability of PUCCH, the UE is studying to repeatedly send PUCCH to multiple transmission and reception points. The repeated transmission of PUCCH can also be called PUCCH repetition.

[0010] However, according to the NR specifications so far, different SRIs cannot be applied in PUCCH repetitions, and the reception quality of PUCCH cannot be effectively improved. In this case, for example, spatial diversity gain and high-rank transmission using multiple transmission and reception points cannot be properly achieved, and there is a concern that the increase in communication throughput will be suppressed.

[0011] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can implement appropriate PUCCH repetitive transmission.

[0012] Means for solving problems

[0013] A terminal involved in one method of the present disclosure comprises: a control unit, which applies multiple spatial relationship information (SpatialRelation Information (SRI)) to multiple physical uplink control channel (Physical Uplink Control Channel (PUCCH)) resources; and a sending unit, which uses spatial domain sending filters based on the multiple spatial relationship information to send uplink control information in the multiple PUCCH resources.

[0014] Effects of the Invention

[0015] According to one aspect of the present disclosure, appropriate PUCCH repetitive transmission can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A and 1B is a diagram showing an example of an SRI sequence according to the first embodiment.

[0017] Figure 2This is a diagram showing an example in which the number of spatial relationships of a specific SRI sequence is limited.

[0018] Figure 3 This is a diagram showing an example of the spatial relationship corresponding to the PUCCH resource group.

[0019] Figure 4A 4B is a diagram showing an example of mapping of a plurality of SRIs for PUCCH transmission according to the second embodiment.

[0020] Figure 5 This is a diagram showing an example of mapping of a plurality of SRIs for PUCCH transmission according to the third embodiment.

[0021] Figure 6 This is a diagram showing an example of how a group of PUCCH resource sets common to PUCCH transmission opportunities is configured in Embodiment 3.1.

[0022] Figure 7 This is a diagram showing an example of how a group of PUCCH resource sets is configured for each PUCCH transmission opportunity in Embodiment 3.1.

[0023] Figure 8 This is a diagram showing an example of how a group of PUCCH resource sets common to PUCCH transmission opportunities is configured in Embodiment 3.2.

[0024] Fig. 9 This is a diagram showing an example of how a group of PUCCH resource sets is configured for each PUCCH transmission opportunity in Embodiment 3.2.

[0025] Fig.10 This is a diagram showing an example of using non-scheduled DCI in implementation mode 3.2.

[0026] Fig.11 This is a diagram showing an example of using scheduling DCI in implementation mode 3.2.

[0027] Figure 12A-12C It is a diagram showing an example of a symbol interval according to the fourth embodiment.

[0028] Fig.13 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0029] Fig.14 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0030] Fig.15 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0031] Fig.16This is a diagram showing an example of the hardware configuration of a base station and a user terminal involved in one embodiment. DETAILED DESCRIPTION

[0032] (Spatial relationship information)

[0033] In NR, the UE controls the transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, and coding) of at least one of an uplink signal and a channel (also expressed as signal / channel) based on a specific spatial relation.

[0034] The spatial relationship applied to a specific signal / channel may also be determined by spatial relationship information (Spatial Relation Information (SRI)) notified (set) using higher layer signaling.

[0035] In addition, in the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0036] MAC signaling may also use, for example, MAC Control Element (MAC CE), MAC Protocol Data Unit (MAC Protocol Data Unit (PDU)), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (Other System Information (OSI)), etc.

[0037] For example, in Rel-15 NR, the spatial relationship information (RRC's "PUCCH-SpatialRelationInfo" information element) between a specific reference signal (Reference Signal (RS)) and an uplink control channel (Physical Uplink Control Channel (PUCCH)) can also be included in the PUCCH setting information (RRC's "PUCCH-Config" information element) and set to the UE.

[0038] The specific RS may be at least one of a synchronization signal block (Synchronization Signal Block (SSB)), a channel state information reference signal (CSI-RS)), and a sounding reference signal (Sounding Reference Signal (SRS)).

[0039] The set SRI may also include an SRI identifier (Identifier (ID)) for identifying the SRI. In addition, the SRI may also include at least one of an SSB index, a CSI-RS resource ID, and an SRS resource ID as an index of the above-mentioned specific RS. In addition, these spatial relationship information may also include a service cell index corresponding to the above-mentioned specific RS, a bandwidth part (Bandwidth Part (BWP)) ID, etc.

[0040] In addition, in the present disclosure, index, ID, indicator, resource ID, etc. can also be replaced with each other.

[0041] In the case where the spatial relationship information about the SSB or CSI-RS and the PUCCH is set, the UE may also use the same spatial domain filter as the spatial domain filter used to receive the SSB or CSI-RS to send the PUCCH. That is, in this case, the UE may also assume that the UE receiving beam of the SSB or CSI-RS is the same as the UE transmitting beam of the PUCCH.

[0042] When the spatial relationship information about SRS and PUCCH is set, the UE can also use the same spatial domain filter as that used to send the SRS to send PUCCH. That is, in this case, the UE can also assume that the UE transmission beam of SRS is the same as the UE transmission beam of PUCCH.

[0043] In addition, the spatial domain filter used for transmission of the base station, the downlink spatial domain transmission filter, and the transmission beam of the base station can also be replaced with each other. The spatial domain filter used for reception of the base station, the uplink spatial domain receive filter, and the reception beam of the base station can also be replaced with each other.

[0044] In addition, the spatial domain filter used for UE transmission, the uplink spatial domain transmission filter, and the UE's transmission beam can also be replaced with each other. The spatial domain filter used for UE reception, the downlink spatial domain receive filter, and the UE's receive beam can also be replaced with each other.

[0045] The SRI may be configured for the UE in units of PUCCH configuration (PUCCH-Config). The SRI configured by the PUCCH configuration may be applied to all PUCCH resources configured by the PUCCH configuration.

[0046] In the case where more than one SRI related to PUCCH is set, the UE can also control, based on the PUCCH spatial relation Activation / Deactivation MAC CE (PUCCH spatial relation Activation / Deactivation MAC CE), so that one PUCCH SRI becomes active relative to one PUCCH resource at a certain time.

[0047] (Multiple TRP)

[0048] In NR, research is underway to allow UE to perform UL transmission (e.g., PUCCH transmission) to one or more Transmission / Reception Point (TRP) (Multi-TRP (M-TRP)).

[0049] As an example, research is underway to improve the reliability of PUCCH for use cases (or services) for ultra-high reliability and low latency, such as Ultra Reliable and Low Latency Communications (URLLC), by repeatedly sending PUCCH with different SRIs applied to multiple TRPs. Repeated transmission of PUCCH may also be referred to as PUCCH repetition. Repeated transmission may also be simply referred to as repetition.

[0050] In addition, the SRI may correspond to the beam. For example, the UE may assume that PUCCHs of different SRIs are transmitted using different beams.

[0051] By repeatedly sending the PUCCH, it is possible to expect an improvement in the reception quality of the PUCCH on the network side. However, in the existing Rel.15 / 16 NR, only the same spatial relationship is allowed to be applied to the repeated transmission of the PUCCH.

[0052] Therefore, if the NR specifications to date are followed, different SRIs cannot be applied in PUCCH repetitions, and the reception quality of PUCCH cannot be effectively improved. In this case, spatial diversity gain and high-rank transmission using multiple TRPs cannot be properly achieved, and there is a concern that the increase in communication throughput will be suppressed.

[0053] Therefore, the inventors of the present invention have come up with a method for realizing appropriate PUCCH repetition transmission. In one aspect of the present disclosure, for example, for PUCCH repetition using different spatial relationships, a UE can appropriately determine the number of repetitions.

[0054] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the embodiments may be applied individually or in combination.

[0055] In addition, in the present disclosure, “A / B” may mean “at least one of A and B”.

[0056] In addition, in the present disclosure, activation, deactivation, indication (or indication), selection, configuration, update, determination, etc. may also be used interchangeably. In addition, in the present disclosure, sequence, list, set, group, group, cluster, subset, etc. may also be used interchangeably.

[0057] In the present disclosure, panel, beam, panel group, beam group, uplink (UL) transmitting entity, TRP, spatial relationship information (SRI), spatial relationship, control resource set (CORESET), physical downlink shared channel (PDSCH), codeword, base station, specific antenna port (for example, demodulation reference signal (DMRS)) port), specific antenna port group (for example, DMRS port group), specific group (for example, code division multiplexing (CDM)) group, specific reference signal group, CORESET group), specific resource (for example, specific reference signal resource), specific resource set (for example, specific reference signal resource set), CORESET pool, PUCCH group (PUCCH resource group), spatial relationship group, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state (unified TCI state), etc. can also be replaced with each other.

[0058] In addition, for a single DCI, the i-th TRP (TRP#i) may also mean the i-th TCI state, the i-th CDM group, etc. (i is an integer).

[0059] In addition, for multi-DCI, the i-th TRP (TRP#i) can also mean the CORESET corresponding to the CORESET pool index = i, the i-th TCI state, the i-th CDM group, etc. (i is an integer).

[0060] The panel may also be associated with at least one of a group index of an SSB / CSI-RS group, a group index of a group-based beam report, and a group index of an SSB / CSI-RS group for a group-based beam report.

[0061] In addition, the panel identifier (Identifier (ID)) and the panel can also be replaced with each other. In other words, the TRP ID and TRP, the CORESET group ID and the CORESET group, etc. can also be replaced with each other.

[0062] In the present disclosure, index, ID, indicator, resource ID may also be replaced with each other. In the present disclosure, list, group, cluster, subset, etc. may also be replaced with each other.

[0063] In the present disclosure, the description simply referred to as "spatial relationship" can also be replaced with the spatial relationship of PUCCH.

[0064] The PUCCH repetition disclosed in the present invention may also be replaced with MTRP-based repetition, Rel.17 repetition, repetition using different spatial relationships, etc. In addition, in the following example, PUCCH is described as a PUCCH used in the transmission of Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) for PDSCH, but it may also be a PUCCH used for transmitting at least one UCI such as HARQ-ACK, SR, CSI (e.g., non-periodic CSI), and may also be replaced in this way.

[0065] In addition, the multiple spatial relations (SRI) in the present disclosure may be interchangeable with SRI sequences, SRI sets, SRI patterns, SRIs applied to PUCCH repetitions, and the like.

[0066] (Wireless Communication Method)

[0067] <First embodiment>

[0068] In the first embodiment, the UE may determine the number of repetitions of the PUCCH based on the number of configured / activated / specified spatial relationships (for example, the number of SRIs included in the SRI sequence).

[0069] The UE may be configured with the SRI to be applied in PUCCH repetition in the form of an SRI sequence across PUCCH repetitions through RRC signaling.

[0070] In addition, in the present disclosure, SRI may also be interchangeable with spatial relationship information (SRI) of PUCCH, RRC parameter "Spatialrelationinfo", SRI ID, etc. In addition, in the present disclosure, SRI sequence may also be interchangeable with a sequence of SRIs applied to PUCCH repetitions, a set of SRIs, a pattern of SRIs, etc.

[0071] The UE may also be configured with a specific number (eg, M) of SRI sequences through RRC signaling. Here, the specific number M may be, for example, 8, 64, etc., or may be greater than 64.

[0072] In the case where multiple SRI sequences are set, the UE may also activate one or more SRI sequences (a subset of SRI sequences) using MAC CE. The maximum number of activated SRI sequences may also be limited to a specific number (eg, 8).

[0073] One of the activated SRI sequences may also be specified based on the DCI. For example, the UE may determine one of the activated SRI sequences as the sequence to be used in the PUCCH repetition based on a specific field of the DCI and specific parameters (or information) related to the DCI.

[0074] Here, the specific field may be a PUCCH Resource Indicator (PRI) field, an SRI field, a Transmission Configuration Indication (TCI) field, other fields, etc., or may be expressed by a combination of multiple fields.

[0075] The PRI field is included in the DCI that schedules the PDSCH, and is equivalent to information that specifies the PUCCH resources used to send the HARQ-ACK corresponding to the PDSCH.

[0076] The SRI field may be a field that specifies the spatial relationship of the PUCCH. When the SRI field is configured to be present (included) in the DCI by higher layer signaling, the SRI field may be included in the DCI.

[0077] The TCI field may be a field indicating the TCI state (TCI state) of the scheduled PDSCH, or may be a UL TCI field indicating the UL TCI state used in PUCCH transmission.

[0078] For example, other fields may be fields for controlling the PUCCH (for example, fields called PUCCH Control field). When the PUCCH Control field is configured to exist (be included) in the DCI through higher layer signaling, the PUCCH Control field may be included in the DCI.

[0079] The above-mentioned specific parameters may also include at least one of the time resources, frequency resources, control channel element (CCE) index, physical resource block (PRB) index, resource element (RE) index, search space index, control resource set (CORESET) index, CORESET pool index, and aggregation level of the (detected) DCI (or corresponding to the DCI or used for reception). In other words, the above-mentioned specific parameters are equivalent to implicit notification using DCI.

[0080] Figure 1Aas well as Figure 1B This is a diagram showing an example of the SRI sequence involved in the first embodiment. Figure 1A Indicates the value of the SRI field contained in the DCI and the corresponding SRI sequence. In this example, the SRI field is 3 bits, but the number of bits is not limited to this.

[0081] In addition, below, in the present disclosure, the case where the SRI sequence is specified by the SRI field is used as an example for explanation, but it is not limited to this. The specification of the SRI sequence based on the SRI field described below can also be replaced by the specification of the SRI sequence based on at least one of the above-mentioned specific fields and specific parameters. In the present disclosure, the fields listed in the above-mentioned specific fields can also be replaced with each other.

[0082] Figure 1A In the MAC CE, different SRI sequences (the first to eighth SRI sequences) are specified according to the value of the SRI field. The UE may also assume that the SRI sequence ID activated by the MAC CE corresponds to the value of each SRI field in ascending or descending order. In other words, it may also be assumed that when the IDs of the multiple SRI sequences to be activated and the values ​​of the SRI fields are arranged in ascending or descending order, they correspond one to one starting from the smaller one.

[0083] Figure 1B This is a diagram showing the correspondence between the SRI sequence ID and the corresponding SRI sequence (SRI set). This correspondence can also be set / activated by higher layer signaling.

[0084] In this example, SRI sequence ID = 1 is equivalent to {#1, #2, #3, #4}, SRI sequence ID = 5 is equivalent to {#1, #2}, and SRI sequence ID = 8 is equivalent to {#1}. In addition, in this disclosure, for simplicity, SRI ID #x is also expressed as SRI #x, or simply #x.

[0085] As described above, the SRI sequence may also represent the SRI applied in each repetition of the PUCCH. Figure 1A The iSRI sequence is Figure 1B In the case corresponding to SRI sequence ID=i+1, the UE assigned SRI field=000 is assumed to have 4 PUCCH repetitions, and SRI#1, #2, #3, and #4 can be used to send the first, second, third, and fourth PUCCH repetitions respectively.

[0086] Furthermore, a UE to which the SRI field=100 is assigned may assume that the number of PUCCH repetitions is 2, and may apply SRI#1 and #2 to transmit the first and second PUCCH repetitions, respectively.

[0087] Furthermore, a UE to which the SRI field=111 is specified assumes that the number of PUCCH repetitions is 1 (PUCCH transmission without repetition is specified), and may transmit the PUCCH by applying SRI#1.

[0088] In addition, in the present disclosure, PUCCH repetition transmission using different spatial relationships may be replaced with PUCCH repetition transmission using a precoder cycle.

[0089] According to the first embodiment described above, it is possible to appropriately determine the number of repetitions and perform PUCCH repetition transmission.

[0090] <Modification of the first embodiment>

[0091] The number of (settable) spatial relationships associated with the value of a part of the SRI field (or the value of the SRI sequence ID) may be limited compared to the value of other SRI fields (or the value of the SRI sequence ID).

[0092] For example, the number of spatial relationships associated with the value of a part of the SRI field (or the value of the SRI sequence ID) may also be limited to a specific value (for example, 1 or 2) (the values ​​of other SRI fields (or the values ​​of SRI) are not particularly limited). In the case of specifying non-repeated PUCCH transmission, the UE may specify the value of the SRI field / SRI sequence ID in which the number of spatial relationships is limited to 1. By setting a limit on the number of spatial relationships in this way, the increase in signaling overhead for SRI / SRI sequence settings can be appropriately suppressed.

[0093] Figure 2 This is a diagram showing an example where the number of spatial relationships of a specific SRI sequence is limited. In this example, the number of spatial relationships associated with SRI sequence ID=0 is limited to 1. The SRI corresponding to SRI ID#x_1 can be determined in advance through specifications, set to the UE through high-layer signaling, or determined based on UE capabilities.

[0094] <Modification 2 of the first embodiment>

[0095] In NRs after Rel.16, control of introducing PUCCH resource groups and specifying / updating multiple spatial relationships for each group is being studied.

[0096] Figure 3 PRI=0 to PRI=7 correspond to PUCCH resources 1 to 8, respectively; PUCCH resources 1 to 4 correspond to group 1; and PUCCH resources 5 to 8 correspond to group 2.

[0097] Here, one spatial relationship (SRI#1) is set for group 1, and two spatial relationships (SRI#1, #2) are set for group 2 through high-layer signaling (eg, RRC, MAC CE).

[0098] As described above in the first embodiment, the UE may determine the number of PUCCH repetitions based on the number of configured / activated / specified spatial relationships. Figure 3 In the example, if the PUCCH resources belonging to group 1 are specified through PRI, the UE performs PUCCH transmission with one repetition (no repetition), and if the PUCCH resources belonging to group 2 are specified through PRI, the UE performs PUCCH transmission with 2 repetitions.

[0099] <Second embodiment>

[0100] In the second embodiment, the UE uses multiple SRIs to send UCI in one PUCCH resource in one time slot. The multiple SRIs may also be given as described above in the first embodiment.

[0101] Figure 4A as well as Figure 4B This is a diagram showing an example of mapping of multiple SRIs for PUCCH transmission according to the second embodiment. In this example, a PUCCH resource using N symbols in one time slot is shown. Intra frequency hopping is applied to the PUCCH resource, the first frequency hopping has a time length of Floor(N / 2) symbols, and the second frequency hopping has a time length of N-Floor(N / 2) symbols. In addition, Floor(X) is a value obtained by applying a floor function to X.

[0102] It is considered that it is decided to use a plurality of SRIs (SRI#1, #2) for this PUCCH transmission. Figure 4A An example of mapping SRI for each hopping unit of intra-frequency hopping is shown. In this case, the symbol boundary between SRI#1 and #2 becomes the frequency hopping boundary and can be uniquely determined.

[0103] For example, the UE may allocate the first SRI to one of the first frequency hopping and the second frequency hopping, and allocate the second SRI to the other of them.

[0104] Figure 4BThis shows an example of mapping SRI in symbol units of PUCCH resources. In this example, the UE applies SRI#1 only to the number of symbols greater than Floor(N / 2) from the first symbol among N symbols, and then applies SRI#2. In this case, the UE allocates the first SRI (across multiple hop frequencies) to both the first hop frequency and the second hop frequency, and allocates the second SRI to the second hop frequency. In addition, the opposite may be true, where the number of symbols in SRI#1 is less than the number of symbols in SRI#2.

[0105] For example, the UE may be notified of the position of the symbol boundary of SRI#1 and #2 through high-layer signaling, physical layer signaling, or a combination thereof. The UE may also be notified of a bitmap indicating which SRI#1 or #2 is applied to each symbol through high-layer signaling, physical layer signaling, or a combination thereof.

[0106] The codeword unit here may also be replaced by a codeword set unit (eg, a 2-codeword unit) in consideration of the trade-off between flexibility and notification overhead.

[0107] Figure 4B The mapping can be compared Figure 4A The mapping of SRI can be more flexible. For example, it can also be mapped in a way that the time length of the more preferred beam (SRI) becomes longer.

[0108] For example, the UE may also allocate the first SRI to a PUCCH transmission opportunity with a smaller starting symbol number, and allocate the second SRI to a PUCCH transmission opportunity with a larger starting symbol number. In addition, in the present disclosure, the PUCCH transmission opportunity may also refer to a PUCCH to which the same SRI is applied (or the resources of the PUCCH or the time resources of the PUCCH).

[0109] [TPC]

[0110] Transmit Power Control (TPC) related parameters (eg, TPC command, α, P0, Pathloss Reference Signal (PL-RS)) used for each PUCCH transmission opportunity are described.

[0111] For α, P0, and PL-RS set through high-layer signaling, when they are set together with / associated with / corresponding to the spatial relationship (SRI), even if a different SRI is applied to each PUCCH transmission opportunity, the parameters for each PUCCH transmission opportunity are appropriately allocated.

[0112] The DCI (e.g., DCI format 1_1) (also referred to as DL allocation DCI) for scheduling PDSCH may also include a TPC command field for each PUCCH transmission opportunity (in other words, the number of SRIs). According to this structure, the TPC for the PUCCH transmission opportunity corresponding to each SRI can be appropriately controlled.

[0113] The DCI may include one TPC command field indicating a TPC command for each PUCCH transmission opportunity. According to this configuration, it is possible to suppress an increase in the size of the DCI.

[0114] The UE may also equally apply a designated TPC command to each PUCCH transmission opportunity.

[0115] The UE may also apply a designated TPC command to a specific PUCCH transmission opportunity (eg, the first PUCCH transmission opportunity), and control other PUCCH transmission opportunities as if the TPC command has not been notified (based on TPC correction value = 0 or closed-loop power control is not applied).

[0116] The UE may also replace the TPC command field of the above-mentioned DCI with a TPC command field representing each PUCCH transmission opportunity. For example, when the TPC command field is 2 bits, the UE may also determine that the first half bit (1 bit in this example) represents the TPC command field of the PUCCH transmission opportunity corresponding to the first SRI, and the second half bit (1 bit in this example) represents the TPC command field of the PUCCH transmission opportunity corresponding to the second SRI. In addition, the first half bit and the second half bit may not be the same number of bits, or may be different numbers of bits.

[0117] This 1 bit may also correspond to a correction value of +1 or -1 of the TPC command, for example. The value of the correction value may be determined in advance by a specification or may be set by a high-level signaling. The value of the correction value may also be set / specified as a value for each PUCCH transmission opportunity or may be set / specified as a common value in all PUCCH transmission opportunities.

[0118] In addition, the UE may also determine that a specific bit (e.g., '0', '1) is added before or after the above-mentioned first half bit, or the bit column of the bit column represents the TPC command field of the PUCCH transmission opportunity corresponding to the first SRI. In addition, the UE may also determine that a specific bit (e.g., '0', '1) is added before or after the above-mentioned second half bit, or the bit column of the bit column represents the TPC command field of the PUCCH transmission opportunity corresponding to the second SRI.

[0119] The UE may also determine the correction value of the TPC command for each PUCCH transmission opportunity based on the correspondence between the value of a specified TPC command field and the correction value of the TPC command for each PUCCH transmission opportunity. The correspondence may be specified in advance through specifications, set to the UE through high-layer signaling, specified through DCI, or determined based on UE capabilities. According to this structure, it is possible to suppress the increase in the size of the DCI and appropriately and flexibly indicate the TPC command for each PUCCH transmission opportunity.

[0120] [Phase continuity]

[0121] In the existing Rel.15 / 16NR specifications, when intra-slot frequency hopping is enabled through high-level parameters for PUCCH, the channel on which the codeword of the antenna port used for uplink transmission is transmitted can also be inferred based on the channel on which other codewords of the same antenna port are transmitted, but it is stipulated that it is limited to the case where the two codewords correspond to the same hopping frequency (in addition, it has nothing to do with whether the hopping distance is zero).

[0122] In other words, in the existing standards, the phases in the same frequency hopping in the same time slot are continuous (the channel inference results of continuous codewords can be used).

[0123] In the second embodiment, the following provisions may also be introduced:

[0124] When intra-slot frequency hopping is enabled for PUCCH by higher-layer parameters, the channel on which the symbol of the antenna port used for uplink transmission is transmitted can also be inferred based on the channel on which other symbols of the same antenna port are transmitted, but this is limited to the case where the two symbols correspond to the same SRI (in addition, it has nothing to do with whether the two symbols correspond to the same hopping frequency).

[0125] In the second embodiment, when a plurality of SRIs are allocated to one PUCCH resource, it can also be assumed that the phases in the PUCCH transmission opportunity corresponding to one SRI are continuous (any two symbols in the PUCCH transmission opportunity can use the channel estimation result to each other). Figure 4B As shown, in PUCCH transmission opportunities across different hopping frequencies in the same time slot, when the same SRI is applied, the channel estimation results in the codewords within the PUCCH transmission opportunity can be appropriately utilized.

[0126] According to the second embodiment described above, it is possible to appropriately perform repeated transmission to which different SRIs are applied based on a single DCI.

[0127] <Third embodiment>

[0128] In the third embodiment, the UE uses multiple SRIs to send UCI in multiple PUCCH resources in one time slot. The multiple SRIs may also be given as described above in the first embodiment.

[0129] UCI can also be encoded separately in each PUCCH resource. In other words, the same UCI can also be sent in each of the above multiple PUCCHs. This operation can also be called UCI repetition. In the case of UCI repetition, if the base station can receive one of the PUCCH resources, it can decode the UCI.

[0130] UCI may also be encoded across the above-mentioned multiple PUCCH resources. In other words, one UCI may also be divided into the above-mentioned multiple PUCCH resources and sent. This operation may also be referred to as UCI encoding across multiple PUCCH resources (UCI encoding across multiple PUCCH resources). In the case of UCI encoding across multiple PUCCH resources, it is expected that the base station receives the PUCCH resources of both parties for decoding. If the PUCCH resources of both parties can be received with a quality above a certain level, improved performance can be expected.

[0131] Figure 5 This is a diagram showing an example of mapping of multiple SRIs for PUCCH transmission involved in the third embodiment. In this example, two PUCCH resources (PUCCH resources #1, #2) are shown in one time slot. For simplicity, intra-frequency hopping is not applied to each PUCCH resource, but intra-frequency hopping can also be applied. The UE can also apply different SRIs (SRI #1, #2) to PUCCH resources #1 and #2 respectively.

[0132] In addition, for the combination of two PUCCH formats transmitted using different SRIs in a time slot, it can be assumed that there is no restriction or at least one of the following restrictions exists:

[0133] The combination of short PUCCH formats with shorter duration and short PUCCH formats is prohibited (not expected) or allowed,

[0134] The combination of a short PUCCH format and a long PUCCH format with a longer duration is either prohibited (not expected) or allowed,

[0135] • Long PUCCH format and a combination of long PUCCH formats are prohibited (not expected) or allowed.

[0136] In addition, the short PUCCH format may be, for example, PUCCH format 0 or 2 having a time length of 1 or 2 symbols. In addition, the long PUCCH format may be, for example, PUCCH format 1, 3 or 4 having a time length of more than 4 symbols. The definition is not limited to this, and the long PUCCH format time length may be longer than the short PUCCH format.

[0137] The following describes a case where two PUCCHs transmitted by applying different SRIs in a time slot are triggered using one DCI (single DCI) (embodiment 3.1) and a case where they are triggered using different DCIs (multiple DCIs) (embodiment 3.2).

[0138] [Implementation method 3.1]

[0139] In Embodiment 3.1, the TPC-related parameters for each PUCCH transmission opportunity (in the third embodiment, the PUCCH transmission opportunity corresponds to the PUCCH resource) may be configured / specified in the same manner as described in the first embodiment.

[0140] The following describes the PRI field in Implementation 3.1.

[0141] The DCI (e.g., DCI format 1_1) (also referred to as DL allocation DCI) for scheduling PDSCH may also include a PRI field for each PUCCH transmission opportunity (in other words, the number of SRIs). According to this structure, the PUCCH resources used for the PUCCH transmission opportunities corresponding to each SRI can be appropriately controlled.

[0142] The DCI may include one PRI field indicating the PUCCH resource for each PUCCH transmission opportunity. According to this configuration, it is possible to suppress an increase in the size of the DCI.

[0143] The UE may also determine the PUCCH resources for a specific PUCCH transmission opportunity (eg, the first PUCCH transmission opportunity) based on a designated PRI field, and may also determine the PUCCH resources for other PUCCH transmission opportunities based on specific rules.

[0144] The UE may also determine that the PUCCH resource for the other PUCCH transmission opportunity is located at a position with a specific time / frequency offset value added from the PUCCH resource for the first PUCCH transmission opportunity. The specific time / frequency offset may be determined in advance through specifications, may be set to the UE through high-layer signaling, or may be determined based on UE capabilities.

[0145] The UE may also determine that the PUCCH resource for the other PUCCH transmission opportunity is a PUCCH resource corresponding to the value obtained by adding or subtracting the offset value from the value of the above-specified PRI field (or the remainder after dividing the value by the number of values ​​that the PRI field can take). For example, when the offset value is '2' and the value of the specified PRI field is '1', it may also be determined that the value of the notified PRI field = 3 (= 1 + 2) for the other PUCCH transmission opportunity, and the PUCCH resource is determined. The offset may be determined in advance through specifications, may be set to the UE through high-layer signaling, or may be determined based on UE capabilities.

[0146] The UE may also interpret that the PRI field of the above DCI represents the PRI field of each PUCCH transmission opportunity. For example, when the PRI field is 2 bits, the UE may also determine that the first half bit (1 bit in this example) represents the PRI field of the PUCCH transmission opportunity corresponding to the first SRI, and the second half bit (1 bit in this example) represents the PRI field of the PUCCH transmission opportunity corresponding to the second SRI. In addition, the first half bit and the second half bit may not be the same number of bits, or may be different numbers of bits.

[0147] The correspondence between the value of the first half bit or the second half bit and the PUCCH resource may be determined in advance by specification or set by higher layer signaling. The correspondence may be set / specified for each PUCCH transmission opportunity or may be set / specified in common for all PUCCH transmission opportunities.

[0148] In addition, the UE may also determine that a specific bit (e.g., '0', '1) or a bit column of bit columns appended before or after the above-mentioned first half bit indicates the PRI field of the PUCCH transmission opportunity corresponding to the first SRI. In addition, the UE may also determine that a specific bit (e.g., '0', '1) or a bit column of bit columns appended before or after the above-mentioned second half bit indicates the PRI field of the PUCCH transmission opportunity corresponding to the second SRI.

[0149] The UE may also determine the PUCCH resources for each PUCCH transmission opportunity based on the correspondence between the value of a designated PRI field and the PUCCH resources (or the value of the PRI) for each PUCCH transmission opportunity. The correspondence may be specified in advance through specifications, set to the UE through high-level signaling, specified through DCI, or determined based on UE capabilities. According to this structure, the increase in the size of the DCI can be suppressed, and the PUCCH resources for each PUCCH transmission opportunity can be indicated appropriately and flexibly.

[0150] In addition, the UE may be configured with a common PUCCH resource set in the PUCCH transmission opportunity by the upper layer, or may be configured with a PUCCH resource set for each PUCCH transmission opportunity by the upper layer. The UE may also determine the PUCCH resources for each PUCCH transmission opportunity based on at least one of the PRI field for each PUCCH transmission opportunity and a PRI field common to the PUCCH transmission opportunity as described above. The PUCCH resource set referenced for determining the PUCCH resources may be used sequentially (switched) for each PUCCH transmission opportunity, or may be determined based on the CORESET pool index of the CORESET where the DCI is detected.

[0151] Figure 6 This is a diagram showing an example of how a group of PUCCH resource sets with common PUCCH transmission opportunities in implementation mode 3.1 is configured. In this example, the UE may also be configured with a group of PUCCH resource sets consisting of PUCCH resource sets 1, 2, ... with common PUCCH transmission opportunities (without distinguishing PUCCH transmission opportunities). In addition, TRP1 and 2 in the figure are conceptual illustrations, and they may also be the same TRP.

[0152] In addition, in the present disclosure, the PUCCH resource set i may also be defined as a larger i used as the size of the UCI bit is larger, but the present invention is not limited thereto. In addition, an example is shown in which the number of PUCCH resources included in one PUCCH resource set is 8, but the present invention is not limited thereto.

[0153] In addition, in the following example, an example is shown in which HARQ-ACK transmission is transmitted using PUCCH resources of PUCCH resource set 2 (ie, PUCCH resource set 2 is selected based on the size of UCI), but the present invention is not limited to this.

[0154] like Figure 6 As shown on the right side of , in PUCCH resource set 1, PUCCH resources 1 to 8 are set corresponding to DCI (PRI field (PRI#1 or PRI#2 field) is the same in the following figures.) = 000 to 111. In PUCCH resource set 2, PUCCH resources 11 to 18 are set corresponding to DCI = 000 to 111.

[0155] like Figure 6 As shown in the upper left side of the figure, the UE receives DCI1 indicating the PDSCH of TRP1 and sends HARQ1 (HARQ-ACK) corresponding to the PDSCH. Here, the PUCCH resources for HARQ1 can also be specified by the PRI#1 and PRI#2 fields of DCI1. Here, the PRI#1 field of DCI1 is 010, and the PRI#2 field is 000, based on Figure 6In the table on the right side of , UE shows an example that the PUCCH resource for the first PUCCH transmission opportunity (SRI for TRP1 is applied) is resource 13, and the PUCCH resource for the second PUCCH transmission opportunity (SRI for TRP2 is applied) is resource 11.

[0156] Figure 7 A diagram showing an example of how a group of PUCCH resource sets is configured for each PUCCH transmission opportunity in Embodiment 3.1. In this example, a group of PUCCH resource sets consisting of PUCCH resource sets 1, 2, ... is configured for each PUCH transmission opportunity in the UE.

[0157] like Figure 7 As shown in the upper right side of , in PUCCH resource set 1 for the first PUCCH transmission opportunity, PUCCH resources 1-1 to 1-8 are set corresponding to DCI = 000 to 111. In PUCCH resource set 2 for the first PUCCH transmission opportunity, PUCCH resources 1-11 to 1-18 are set corresponding to DCI = 000 to 111.

[0158] like Figure 7 As shown in the lower right side of , in PUCCH resource set 1 for the second PUCCH transmission opportunity, PUCCH resources 2-1 to 2-8 are set corresponding to DCI = 000 to 111. In PUCCH resource set 2 for the second PUCCH transmission opportunity, PUCCH resources 2-11 to 2-18 are set corresponding to DCI = 000 to 111.

[0159] like Figure 7 As shown in the upper left side of the figure, the UE receives DCI1 indicating the PDSCH of TRP1 and sends HARQ1 (HARQ-ACK) corresponding to the PDSCH. Here, the PUCCH resources for HARQ1 can also be specified by the PRI#1 and PRI#2 fields of DCI1. Here, the PRI#1 field of DCI1 is 000, and the PRI#2 field is 000, based on Figure 7 In the table on the right, UE shows an example in which the PUCCH resources for the first PUCCH transmission opportunity (SRI for TRP1 is applied) are resources 1-11, and the PUCCH resources for the second PUCCH transmission opportunity (SRI for TRP2 is applied) are resources 2-11.

[0160] [Implementation method 3.2]

[0161] In implementation 3.2, DCI for TRP#1 (for example, DCI detected in the CORESET corresponding to CORESET pool index = 0) may be used, and TPC commands, PRI, etc. for PUCCH transmission opportunities for TRP#1 may be specified. In addition, DCI for TRP#2 (for example, DCI detected in the CORESET corresponding to CORESET pool index = 1) may be used, and TPC commands, PRI, etc. for PUCCH transmission opportunities for TRP#2 may be specified.

[0162] At least one of these DCIs (multiple DCIs) (e.g., the first DCI) may also be used to schedule the PDSCH. Another DCI (e.g., the second DCI) that is not used in the scheduling of the PDSCH may also be used for notification of PUCCH resources, TPC commands, etc. for the PUCCH used to send the HARQ-ACK for the PDSCH scheduled by the first DCI.

[0163] The first DCI and the second DCI may be in the same DCI format (eg, DCI format 1_1) or in different DCI formats, and may have cyclic redundancy checks (CRC) encrypted by different radio network temporary identifiers (Radio Network Temporary Identifiers (RNTI)).

[0164] In addition, the UE can be configured with a common PUCCH resource set in the PUCCH transmission opportunity through the upper layer, or a PUCCH resource set for each PUCCH transmission opportunity through the upper layer. The PUCCH resource set referenced to determine the PUCCH resources can be used sequentially (switched) for each PUCCH transmission opportunity, or can be determined based on the CORESET pool index of the CORESET detected by the DCI.

[0165] Figure 8 This is a diagram showing an example of how a group of PUCCH resource sets common to PUCCH transmission opportunities is configured in Embodiment 3.2. Fig. 9 This is a diagram showing an example of how a group of PUCCH resource sets is configured for each PUCCH transmission opportunity in Embodiment 3.2. Figure 8 and Figure 6 Examples Fig. 9 and Figure 7 The examples are similar, but the differences are as follows.

[0166] The UE detects DCI#1 from TRP#1 (e.g., CORESET with CORESET pool index = 0), and detects DCI#2 from TRP#2 (e.g., CORESET with CORESET pool index = 1). PDSCH is scheduled by at least one of DCI#1 and #2, the PRI#1 field of DCI#1 indicates the PUCCH resources of the first PUCCH transmission opportunity (SRI for TRP1 is applied), and the PRI#2 field of DCI#2 indicates the PUCCH resources of the second PUCCH transmission opportunity (SRI for TRP2 is applied).

[0167] [[DCI without scheduling PDSCH]]

[0168] The DCI that triggers the PUCCH resources for sending HARQ-ACK is described, where the HARQ-ACK is used for the PDSCH scheduled by other DCI, and the DCI is a DCI that is not used for scheduling the PDSCH (for example, the second DCI mentioned above). Hereinafter, in the present disclosure, the DCI is also referred to as non-scheduled DCI, PUCCH trigger-dedicated DCI, etc.

[0169] A UE that detects a non-scheduled DCI may not receive the PDSCH, and may not send a HARQ-ACK for the PDSCH, even if the non-scheduled DCI contains information about scheduling the PDSCH. A UE that detects a non-scheduled DCI may also use the PUCCH resources, TPC commands, etc. indicated by the non-scheduled DCI to send a HARQ-ACK (or a non-periodic CSI report triggered by the other DCI) for the PDSCH scheduled by other DCIs (e.g., the first DCI mentioned above).

[0170] The fields included in the non-scheduled DCI may include a HARQ process number field indicating the same HARQ process number (or HARQ process ID) as that indicated by the other DCIs above, or an NDI field indicating the same value of the New Data Indicator (NDI) as that indicated by the other DCIs above. The non-scheduled DCI may not include information that can determine scheduling (e.g., frequency domain resource allocation field, time domain resource allocation field, etc.).

[0171] The UE may also determine that the detected DCI is a non-scheduled DCI if the detected DCI satisfies at least one of the following conditions:

[0172] The specific field of the DCI is a specific value,

[0173] The DCI is detected in a specific CORESET.

[0174] The "specific field is a specific value" may also be equivalent to at least one of "the HARQ process number field is the same as other DCI" and "the NDI field is the same as other DCI".

[0175] The above-mentioned specific CORESET may also be equivalent to at least one of the CORESET that is the same as the CORESET detected by other DCIs, the CORESET that is different from the CORESET detected by other DCIs, the CORESET corresponding to the same CORESET pool index as the CORESET detected by other DCIs, and the CORESET corresponding to a CORESET pool index that is different from the CORESET detected by other DCIs.

[0176] The receivable period of non-scheduled DCI may also be defined. The UE may also assume that the DCI detected during the receivable period can be determined as non-scheduled DCI, and that the DCI that is not such a DCI cannot be determined as non-scheduled DCI. If the receivable period of non-scheduled DCI is defined in this way, it can be appropriately distinguished from the DCI used for the retransmission of the normal PDSCH.

[0177] The receivable period may also correspond to at least one of the following:

[0178] The period from the reception symbol of other DCI (the last received symbol) to the reception start symbol of the PDSCH scheduled by the other DCI,

[0179] The period from the reception symbol of other DCI to the reception end symbol (final symbol) of the PDSCH scheduled by the other DCI,

[0180] The period from the reception symbol of other DCI to the transmission start symbol of the PUCCH triggered by the other DCI,

[0181] The period from the reception symbol of other DCI to the transmission completion symbol of the PUCCH triggered by the other DCI.

[0182] In addition, part or all of the symbols in the above description of the receivable period may be replaced by other time units (e.g., time slots, sub-time slots, sub-frames, frames, etc.). For example, the last example may be replaced by "a period from the reception of a symbol of other DCI to the end of the transmission of the PUCCH triggered by the other DCI".

[0183] The receivable period may also be differently specified (different values ​​may also be used) depending on the use of the above-mentioned UCI repetition (the same UCI is sent in the PUCCH corresponding to other DCI and the PUCCH corresponding to non-scheduled DCI) and the UCI encoding across the above-mentioned multiple PUCCH resources (UCI is encoded and sent across the PUCCH corresponding to other DCI and the PUCCH corresponding to non-scheduled DCI).

[0184] Fig.10 This is a diagram showing an example of using non-scheduled DCI in implementation mode 3.2. Figure 8 , Fig. 9 Similarly, PDSCH is scheduled by DCI1, and the transmission of the corresponding PUCCH1 is controlled. In addition, although DCI2 does not schedule PDSCH, the transmission of PUCCH2 that transmits UCI for the PDSCH scheduled by the above DCI1 is controlled by the DCI2.

[0185] The period 1 corresponds to a receivable period from the reception symbol of the other DCI described above to the reception start symbol of the PDSCH scheduled by the other DCI.

[0186] The period 2 corresponds to a receivable period from the reception symbol of the other DCI described above to the reception completion symbol of the PDSCH scheduled by the other DCI.

[0187] The period 3 corresponds to a receivable period from the reception symbol of the other DCI described above to the transmission start symbol of the PUCCH triggered by the other DCI.

[0188] Since non-scheduled DCI does not schedule PDSCH, the UE may not count non-scheduled DCI in the HARQ codebook (HARQ-ACK codebook). The HARQ codebook may be one or both of a semi-static HARQ codebook and a dynamic HARQ codebook.

[0189] For non-scheduled DCI, the DL allocation index (Downlink Assignment Indicator) (Index) (DAI)) may not be counted. The DAI may also be at least one of a counter DAI (Counter DAI (C-DAI)) and a total DAI (Total DAI (T-DAI)). The UE may also ignore the DAI field of the non-scheduled DCI.

[0190] On the other hand, for non-scheduled DCI, DAI can also be counted. The UE can also consider the DAI field of the non-scheduled DCI to control HARQ-ACK. In this case, the base station can grasp the error (e.g., reception error) for the non-scheduled DCI.

[0191] [[DCI for scheduling PDSCH]]

[0192] The DCI that triggers the PUCCH resources for sending HARQ-ACK can also be used to schedule the same PDSCH, and the HARQ-ACK is used for the PDSCH scheduled by other DCI. The above DCI can be used as a backup in case the above other DCI is erroneous.

[0193] The above-mentioned DCI and the above-mentioned other DCI may also have the same value in fields other than the PRI field and the TPC command field.

[0194] Even if the UE misunderstands the other DCI, it can still receive the PDSCH that should be scheduled by the other DCI based on the DCI, and can use the PUCCH corresponding to the DCI to send the HARQ-ACK corresponding to the PDSCH.

[0195] Fig.11 This is a diagram showing an example of using scheduling DCI in implementation mode 3.2. Figure 8 , Fig. 9 Similarly, PDSCH is scheduled by DCI1, and the transmission of the corresponding PUCCH1 is controlled. In addition, DCI2 schedules the same PDSCH, and the transmission of PUCCH2 that transmits UCI for the PDSCH scheduled by the above DCI1 is controlled by the DCI2.

[0196] In this example, although the UE fails to receive DCI1, it can receive PDSCH because it successfully receives DCI2. In addition, since the UE fails to receive DCI1, it cannot obtain the information of PUCCH1 and cannot send the UCI corresponding to the above PDSCH in PUCCH1. On the other hand, since the UE successfully receives DCI2, it sends the UCI corresponding to the above PDSCH in PUCCH2.

[0197] Multiple DCIs schedule the same PDSCH Fig.11 Such control can be performed when not all CORESETs with CORESET pool indices are set to UEs or when the CORESET pool indices of the CORESETs detecting the multiple DCIs are the same, or when the CORESET pool indices of the CORESETs detecting the multiple DCIs are different.

[0198] [Phase continuity]

[0199] In the third embodiment, when multiple PUCCH resources in one time slot are allocated with multiple SRIs, at least one of the following assumptions may be made:

[0200] For two symbols of multiple PUCCH resources, the phases are continuous (the channel does not change within the continuous symbols, and the channel estimation result can be used),

[0201] For two symbols of multiple PUCCH resources, the phases are discontinuous (the channel may change within consecutive symbols, and the channel inference result cannot be used).

[0202] When two symbols of a plurality of PUCCH resources are consecutive and their respective SRIs are the same, the phases of these symbols are continuous, and when this is not the case (eg, the SRIs are different), the phases are discontinuous.

[0203] According to the third embodiment described above, it is possible to appropriately perform repeated transmission to which different SRIs are applied based on multiple DCIs.

[0204] <Fourth embodiment>

[0205] The fourth embodiment is related to the symbol interval during SRI switching.

[0206] As shown in the second embodiment, the third embodiment, etc., when there are multiple PUCCH transmission opportunities for different SRIs in the same time slot, the SRI (beam) switching process of the UE may take time, so there may be at least one of the following constraints:

[0207] ·SRI requires a symbol gap between different PUCCH#1 and PUCCH#2.

[0208] A symbol gap is required between different symbols of SRI in one PUCCH resource.

[0209] A symbol gap is required between different PUCCH#1 and PUCCH#2 of SRI, but a symbol gap is not required between different symbols of SRI within one PUCCH resource.

[0210] A first symbol gap is required between different PUCCH#1 and PUCCH#2 of SRI, and a second symbol gap is required between different symbols of SRI within one PUCCH resource (for example, the first symbol gap may be larger than the second symbol gap, may be the same as the second symbol gap, or may be smaller than the second symbol gap).

[0211] In addition, the above-mentioned restriction may be a restriction for each UL BWP, a restriction for each UL carrier (or cell), or a restriction common to multiple UL carriers (or cells).

[0212] The symbol gap may also be used in the constraints of PUCCH resource allocation (e.g., prohibiting PUCCH resource allocation within the symbol gap). The UE may not be allocated PUCCH resources overlapping with the symbol gap, in which case the UE may be assumed not to be requested (not to perform) PUCCH transmission within the symbol gap.

[0213] The value of the symbol gap may be pre-defined by the specification, may be set to the UE by higher layer signaling, may be specified by DCI, or may be determined based on UE capabilities. In addition, the value of the symbol gap is not limited to a positive value, and may be 0, a negative value, etc.

[0214] Figure 12A-12C It is a diagram showing an example of a symbol interval according to the fourth embodiment. Fig. 12A This corresponds to the case where UCI is transmitted using multiple SRIs (SRI #1, #2) in multiple PUCCH resources (PUCCH #1, #2) in one slot. As in this example, PUCCH resources may be allocated so that a symbol gap is ensured between PUCCH resources.

[0215] Fig. 12B This is equivalent to using multiple SRIs (SRI#1, #2) to transmit UCI in one PUCCH resource (PUCCH#1) in one slot. As in this example, there is no need for a symbol gap between different symbols of SRI in one PUCCH resource (the symbol gap is 0).

[0216] Fig. 12C This is equivalent to the situation where UCI is sent using multiple SRIs (SRI #1, #2) in multiple PUCCH resources (PUCCH #1, #2) in one time slot. In this example, there are PUCCH #2 symbols in the period within the symbol gap starting from the last symbol of PUCCH #1. In this case, the UE can also assume that PUCCH #2 is not sent during the period in PUCCH #2 that overlaps with the symbol gap starting from PUCCH #1. In addition, the UE can either not send PUCCH #2 or discard (or cancel) the transmission of PUCCH #2 during the period that does not overlap with the symbol gap (the period after the symbol gap).

[0217] According to the fourth embodiment described above, it is possible to perform switching of SRI while appropriately considering the symbol interval.

[0218] <Other>

[0219] At least one of the above-mentioned embodiments may also be applied only to a UE that reports a specific UE capability (UE capability) or supports the specific UE capability.

[0220] The specific UE capability may also represent at least one of the following:

[0221] Whether PUCCH repetition is supported,

[0222] Whether to support PUCCH repetition within a time slot,

[0223] The maximum number of SRIs (or spatial relations) supported per PUCCH resource,

[0224] • Maximum number of SRIs (or spatial relations) (for PUCCH) per slot supported.

[0225] In addition, at least one of the above-mentioned embodiments may also be applied when the UE is set with specific information associated with the above-mentioned embodiments through high-layer signaling. For example, the specific information may also be information indicating different spatial relationships for enabling PUCCH transmission opportunities, information for setting the use of non-scheduled DCI, any RRC parameter for a specific version (e.g., Rel.17), etc.

[0226] In addition, the notification method of the TPC command / PRI for each PUCCH transmission opportunity as shown in the second and third embodiments can also be applied to the notification of SRI for each PUCCH transmission opportunity. The TPC command, PRI, etc. in the second and third embodiments can also be replaced by SRI.

[0227] In the second embodiment, at least one of UCI repetition and UCI coding may be applied to multiple PUCCH transmission opportunities. In the third embodiment, for multiple PUCCH transmission opportunities, considering DCI detection errors, it is more preferable to use UCI repetition (UCI coded per PUCCH resource unit).

[0228] In addition, in each embodiment, an example is shown in which multiple PUCCH transmission opportunities within a time slot are controlled using one or more DCIs, but the present invention is not limited to this. For example, at least one of the contents of the above-mentioned embodiments may be applied when multiple PUCCH transmission opportunities across multiple time slots are controlled using one or more DCIs. In this case, the term "within a time slot" in the description may be replaced by "between time slots", "within multiple time slots", etc., or "within a time slot" may be deleted for understanding.

[0229] (Wireless Communication System)

[0230] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0231] Fig.13 1 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0232] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0233] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0234] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0235] The wireless communication system 1 may also include: a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and the user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

[0236] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0237] Each CC may 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)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (lower than 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (higher than 24 GHz (above-24 GHz)). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to this. For example, FR1 may also correspond to a frequency band higher than FR2.

[0238] Furthermore, the user terminal 20 may perform communication in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0239] Multiple base stations 10 may also be connected by wire (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station may also be referred to as an IAB node.

[0240] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0241] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0242] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. may be used.

[0243] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be applied to the UL and DL radio access schemes.

[0244] In the wireless communication system 1, as downlink channels, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)) and the like may be used.

[0245] In addition, in the wireless communication system 1, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like may be used.

[0246] The PDSCH is used to transmit user data, high-layer control information, system information block (SIB), etc. The PUSCH is also used to transmit user data, high-layer control information, etc. In addition, the PBCH is also used to transmit the master information block (MIB).

[0247] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0248] In addition, the DCI that schedules the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0249] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0250] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be interchangeable.

[0251] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., may also be called hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (Scheduling Request (SR)) may also be transmitted through PUCCH. Random access preamble code for establishing connection with a cell may also be transmitted through PRACH.

[0252] In the present disclosure, downlink, uplink, etc. may be expressed without "link". In addition, various channels may be expressed without "Physical" at the beginning.

[0253] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. may also be transmitted. In the wireless communication system 1, as DL-RS, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. may also be transmitted.

[0254] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0255] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0256] (Base Station)

[0257] Fig.14 1 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0258] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0259] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on the common knowledge in the technical field to which the present disclosure relates.

[0260] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0261] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the public knowledge in the technical field involved in the present disclosure.

[0262] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmitting unit may also be configured by a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured by a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0263] The transmitting / receiving antenna 130 can be constituted by an antenna described based on the common knowledge in the technical field involved in the present disclosure, for example, an array antenna.

[0264] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0265] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0266] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 110, to generate a bit string to be sent.

[0267] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, discrete Fourier transform (DFT) processing (as needed), inverse fast Fourier transform (IFFT) processing), precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0268] The transmitting and receiving unit 120 (RF unit 122 ) may perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0269] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may perform amplification, filter processing, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0270] The sending and receiving unit 120 (receiving processing unit 1212) can also apply 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 the acquired baseband signal to obtain user data, etc.

[0271] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (ReceivedSignal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0272] The transmission path interface 140 can also send and receive signals (return signaling) between the devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0273] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0274] In addition, the transmitting and receiving unit 120 may also transmit information specifying a plurality of spatial relation information (Spatial Relation Information (SRI)) related to one physical uplink control channel (Physical Uplink Control Channel (PUCCH)) resource.

[0275] The control unit 110 may also receive a plurality of PUCCH transmission opportunities in the PUCCH resources that are respectively transmitted using spatial domain transmit filters based on the plurality of spatial relationship information.

[0276] In addition, the transmitting and receiving unit 120 may also transmit information specifying a plurality of spatial relation information (Spatial Relation Information (SRI)) related to a plurality of physical uplink control channel (Physical Uplink Control Channel (PUCCH)) resources.

[0277] The control unit 110 may also receive uplink control information in the plurality of PUCCH resources respectively transmitted using spatial domain transmit filters based on the plurality of spatial relationship information.

[0278] (User Terminal)

[0279] Fig.15 2 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided in one or more pieces.

[0280] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also assumed that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0281] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on the common knowledge in the technical field to which the present disclosure relates.

[0282] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0283] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the public knowledge in the technical field involved in the present disclosure.

[0284] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmitting unit may also be configured by a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured by a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0285] The transmitting / receiving antenna 230 can be constituted by an antenna described based on the common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0286] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0287] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0288] The sending and receiving unit 220 (sending processing unit 2211), for example, can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0289] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also 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 sent, and output a baseband signal.

[0290] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is activated (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0291] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0292] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0293] The sending and receiving unit 220 (receiving processing unit 2212) can also apply 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 the acquired baseband signal to obtain user data, etc.

[0294] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measuring unit 223 may 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 may also be output to the control unit 210.

[0295] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0296] In addition, the control unit 210 may also apply a plurality of spatial relation information (Spatial Relation Information (SRI)) to one physical uplink control channel (Physical Uplink Control Channel (PUCCH)) resource.

[0297] The transmitting and receiving unit 220 may also respectively use the spatial domain transmit filters based on the multiple spatial relationship information to transmit multiple PUCCH transmission opportunities in the PUCCH resources.

[0298] The control unit 210 may also apply the multiple SRIs to the PUCCH resources according to each hopping unit of intra-frequency hopping.

[0299] The control unit 210 may also apply at least one of the multiple SRIs to multiple hops of intra-frequency hopping for the PUCCH resource.

[0300] The control unit 210 may also apply a plurality of spatial relation information (Spatial Relation Information (SRI)) to a plurality of physical uplink control channel (PUCCH) resources.

[0301] The transmitting and receiving unit 220 may also use spatial domain transmit filters based on the plurality of spatial relationship information to transmit the uplink control information in the plurality of PUCCH resources respectively.

[0302] The transmitting and receiving unit 220 may also transmit the same uplink control information (UCI repetition) in the plurality of PUCCH resources.

[0303] The control unit 210 can also be conceived that, when one PUCCH resource of the multiple PUCCH resources is triggered by the first downlink control information and the remaining PUCCH resources of the multiple PUCCH resources are triggered by the second downlink control information, the downlink shared channel is not scheduled by the second downlink control information.

[0304] (Hardware Structure)

[0305] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0306] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0307] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.16 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0308] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0309] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0310] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0311] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0312] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that enables a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0313] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0314] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0315] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 can also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. can also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) can also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0316] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0317] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or different buses may be used between the devices.

[0318] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0319] (Variation Example)

[0320] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc., depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0321] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0322] Here, the parameter set may also refer to a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of the subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, wireless frame structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, etc.

[0323] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0324] A time slot may also include multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0325] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be interchangeable.

[0326] For example, a subframe may also be referred to as a TTI, a plurality of consecutive subframes may also be referred to as a TTI, and a time slot or a mini time slot may also be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in the existing LTE, or a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may also be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0327] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0328] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may also be shorter than the TTI.

[0329] In addition, when a time slot or a mini time slot is called TTI, more than one TTI (i.e., more than one time slot or more than one mini time slot) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0330] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0331] In addition, a long TTI (e.g., normal TTI, subframe, etc.) may be replaced by a TTI having a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) may be replaced by a TTI having a TTI length shorter than that of the long TTI and longer than 1 ms.

[0332] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0333] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0334] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0335] In addition, a resource block may also be composed of one or more resource elements (RE). For example, one RE may also be a radio resource region of one subcarrier and one symbol.

[0336] A Bandwidth Part (BWP) (also referred to as a partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, a common RB may also be identified by an index of the RB relative to a common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0337] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0338] At least one of the configured BWPs may be activated, and the UE may not assume that it transmits or receives a specific channel / signal other than the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced by "BWP".

[0339] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0340] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0341] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0342] Information, signals, etc. described in the present disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0343] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0344] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0345] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC)) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof.

[0346] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0347] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0348] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0349] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0350] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0351] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0352] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0353] In the present disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0354] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0355] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” are used interchangeably.

[0356] There are also cases where a mobile station is referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or some other appropriate terminology.

[0357] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may also be a device carried in a mobile body, a mobile body, etc. The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0358] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to inter-terminal communication (for example, "side"). For example, an uplink channel, a downlink channel, etc. may also be replaced by a side channel.

[0359] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0360] In the present disclosure, operations are assumed to be performed by a base station, and sometimes by its upper node depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by a base station, one or more network nodes other than the base station (for example, Mobility Management Entity (MME)), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0361] The various methods / implementations described in this disclosure may be used individually or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, sequences, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the methods described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0362] The various modes / implementations described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems expanded based on them. In addition, multiple systems can also be applied in combination (for example, LTE or LTE-A, combination with 5G, etc.).

[0363] The term “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the term “based on” means both “based only on” and “based at least on”.

[0364] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used, or that the first element must take precedence over the second element in some form.

[0365] The term "determining" used in the present disclosure may include a variety of operations. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0366] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0367] In addition, "judgment (decision)" can also refer to situations where resolving, selecting, choosing, establishing, comparing, etc. are regarded as "judgment (decision)". In other words, "judgment (decision)" can also refer to situations where some operations are regarded as "judgment (decision)".

[0368] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0369] The terms "connected", "coupled", or all their variations used in this disclosure mean all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be replaced by "access".

[0370] In the present disclosure, when two elements are connected, it can be considered that they are "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0371] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted as "different".

[0372] In the present disclosure, when the terms "include", "including", and variations thereof are used, these terms, like the term "comprising", have an inclusive meaning. Furthermore, the term "or" used in the present disclosure does not mean an exclusive OR.

[0373] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0374] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

Claims

1. A terminal having: A control unit that applies a plurality of spatial relationship information SRIs to repeated transmission of PUCCHs for a plurality of transmission / reception points TRPs in a physical uplink control channel PUCCH resource to which frequency hopping is applied within a time slot; and a transmitting unit, using spatial domain filters based on the multiple SRIs respectively to repeatedly transmit the PUCCH, Downlink control information DCI for scheduling the physical downlink shared channel PDSCH includes a transmit power control TPC command field corresponding to the number of the plurality of SRIs.

2. The terminal according to claim 1, wherein: The control unit controls transmission power of repeated transmission of the PUCCH based on TPC-related parameters set corresponding to the plurality of SRIs.

3. The terminal according to claim 1, wherein: The transmitting unit transmits capability information indicating support for repeated transmission of the PUCCH in the one time slot.

4. A wireless communication method of a terminal, comprising: A step of applying a plurality of spatial relationship information SRIs to repeated transmission of PUCCHs for a plurality of transmission / reception points TRPs in a physical uplink control channel PUCCH resource to which frequency hopping is applied within a time slot; and The step of repeatedly sending the PUCCH is performed by using spatial domain filters based on the multiple SRIs respectively, Downlink control information DCI for scheduling the physical downlink shared channel PDSCH includes a transmit power control TPC command field corresponding to the number of the plurality of SRIs.

5. A base station, comprising: a transmitting unit, transmitting information specifying a plurality of spatial relationship information SRIs, the plurality of SRIs being related to repeated transmission of PUCCHs for a plurality of transmission and reception points TRPs in one physical uplink control channel PUCCH resource to which frequency hopping is applied within one time slot; and a receiving unit for receiving the PUCCHs that are repeatedly transmitted using spatial domain filters based on the plurality of SRIs, respectively; Downlink control information DCI for scheduling the physical downlink shared channel PDSCH includes a transmit power control TPC command field corresponding to the number of the plurality of SRIs.

6. A system having a terminal and a base station, wherein: The terminal has: A control unit applies a plurality of spatial relationship information SRIs to repeated transmission of PUCCHs for a plurality of transmission and reception points TRP in a physical uplink control channel PUCCH resource to which frequency hopping is applied within a time slot; as well as a transmitting unit, using spatial domain filters based on the multiple SRIs respectively to repeatedly transmit the PUCCH, The base station has: A sending unit, sending information specifying the plurality of SRIs; as well as a receiving unit for receiving the PUCCH that is repeatedly transmitted using the spatial domain filter, Downlink control information DCI for scheduling the physical downlink shared channel PDSCH includes a transmit power control TPC command field corresponding to the number of the plurality of SRIs.

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