Terminal, wireless communication method and base station

Abstract

A terminal involved in one embodiment of the present disclosure includes: a receiving unit that receives a downlink control information, i.e., a DCI, for multiple uplink shared channels, i.e., multiple PUSCHs; and a control unit that controls the transmission of the PUSCH based on an extended transmit power control command field, i.e., a TPC command field, and spatial relationship information, i.e., SRI, corresponding to an index associated with the TPC, contained in the DCI. According to one embodiment of the present disclosure, repeated transmission of the PUSCH can be appropriately controlled even when multiple TRPs are applied.

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 of the Third Generation Partnership Project (3GPP)).

[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 3GPP Rel.15, repetitive transmission is supported for UL data channels (e.g., uplink shared channel (Physical Uplink Shared Channel (PUSCH))). The UE controls the transmission of PUSCH across multiple time slots (e.g., K consecutive time slots) based on the repetition factor K set from the network (e.g., base station). That is, in the case of repetitive transmission, each PUSCH is transmitted in a different time slot (e.g., in units of time slots).

[0009] On the other hand, in Rel. 16 and later, when repeatedly transmitting PUSCH, multiple PUSCH transmissions are being studied in one slot, that is, each PUSCH is transmitted in a unit shorter than a slot (for example, in a subslot unit or a minislot unit).

[0010] In addition, in NR, communication using one or more transmission / reception points (Transmission / Reception Point (TRP)) (multi-TRP) is being studied.

[0011] However, in the NR specifications so far, how to control the repeated transmission of PUSCH in multiple panels / TRPs has not been fully studied. If the repeated transmission of PUSCH in multiple TRPs is not performed properly, there is a concern that throughput will decrease or communication quality will deteriorate.

[0012] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control repeated transmission of a PUSCH.

[0013] Means for solving problems

[0014] A terminal involved in one embodiment of the present invention is characterized in that it has: a receiving unit, which receives downlink control information (Downlink Control Information (DCI)) for multiple uplink shared channels (Physical Uplink Shared Channel (PUSCH)); and a control unit, which controls the transmission of the PUSCH based on an extended transmit power control (TPC) command field contained in the DCI and spatial relationship information (Spatial Relation Information (SRI)) corresponding to an index associated with the TPC.

[0015] Effects of the Invention

[0016] According to one embodiment of the present disclosure, even when multiple TRPs are applied, it is possible to appropriately control repeated transmission of PUSCH. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A and Figure 1B This is a diagram showing an example of repeated transmission of the PUSCH.

[0018] Figure 2A and Figure 2B This is a diagram showing an example of an invalid symbol pattern.

[0019] Figure 3A and Figure 3B This is a diagram showing an example of nominal repetitions and actual repetitions.

[0020] Figure 4 This is a diagram showing an example of repeated transmission of PUSCH in multiple TRPs.

[0021] Figure 5 This is a diagram showing an example of a method for indicating multiple SRIs for multiple TRPs based on one DCI.

[0022] Fig. 6A and Figure 6B This is a diagram showing an example of the association between the extended TPC command field and the closed-loop index.

[0023] Fig. 7A and Figure 7B This is a diagram showing another example of the association between the extended TPC command field and the closed-loop index.

[0024] Fig. 8A and Figure 8B This is a diagram showing an example of the association between the extended TPC command field and SRI.

[0025] Fig. 9 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0026] Fig.10 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0027] Fig.11 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0028] Fig.12 This is a diagram showing an example of the hardware configuration of a base station and a user terminal involved in one embodiment. DETAILED DESCRIPTION

[0029] (Repeatedly send)

[0030] In Rel.15, repeated transmission is supported in data transmission. For example, the base station (network (NW), gNB) repeatedly transmits DL data (for example, downlink shared channel (PDSCH)) a specific number of times. Or, the UE repeatedly transmits UL data (for example, uplink shared channel (PUSCH)) a specific number of times.

[0031] Figure 1A is a diagram showing an example of repeated transmission of PUSCH. Figure 1A , an example of a PUSCH with a specific number of repetitions scheduled by a single DCI is shown. The number of repetitions is also called a repetition factor K or an aggregation factor K.

[0032] exist Figure 1A In , the repetition coefficient K=4, but the value of K is not limited thereto. In addition, the nth repetition may also be referred to as the nth transmission occasion, etc., and may also be identified by a repetition index k (0≤k≤K-1). Figure 1A , the repeated transmission of a PUSCH dynamically scheduled by DCI (eg, a PUSCH based on a dynamic grant) is shown, but it can also be applied to the repeated transmission of a PUSCH based on a set grant.

[0033] For example, in Figure 1A In the embodiment, the UE semi-statically receives information indicating the repetition coefficient K (e.g., aggregationFactorUL or aggregationFactorDL) through high-layer signaling. Here, the high-layer signaling may be, for example, any one of RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information, etc., or a combination thereof.

[0034] MAC signaling may use, for example, MAC control elements (MAC CE (Control Element)), MAC PDU (Protocol Data Unit), etc. Broadcast information may also be, for example, master information blocks (MIB: Master Information Block), system information blocks (SIB: System Information Block), minimum system information (RMSI: Remaining Minimum System Information), etc.

[0035] The UE controls the reception processing (e.g., at least one of reception, demapping, demodulation, and decoding) of the PDSCH or the transmission processing (e.g., at least one of transmission, mapping, modulation, and encoding) of the PUSCH in K consecutive time slots based on at least one of the following field values ​​(or information indicated by the field value) in the DCI:

[0036] Allocation of time domain resources (e.g., starting symbol, number of symbols in each time slot, etc.);

[0037] Allocation of frequency domain resources (e.g., a specific number of resource blocks (RBs), a specific number of resource block groups (RBGs));

[0038] Modulation and decoding method (Modulation and Coding Scheme (MCS)) index;

[0039] ·Configuration of the demodulation reference signal (DMRS) for PUSCH;

[0040] ·The spatial relation information (spatial relation info) of PUSCH, or the state (TCI state (TCI-state)) of the transmission configuration indication (transmission configuration indication) (TCI: Transmission Configuration Indication or Transmission Configuration Indicator).

[0041] The same symbol allocation can also be applied between consecutive K time slots. Figure 1A, the case where the PUSCH in each slot is allocated to a specific number of symbols from the beginning of the slot is shown. The same symbol allocation between slots can also be determined as described in the above-mentioned time domain resource allocation.

[0042] For example, the UE may also determine the allocation of symbols in each time slot based on the starting symbol S and the number of symbols L (e.g., Start and Length Indicator (SLIV)) determined based on the value m of a specific field (e.g., TDRA field) in the DCI. In addition, the UE may also determine the initial time slot based on the K2 information determined based on the value m of a specific field (e.g., TDRA field) in the DCI.

[0043] On the other hand, between the consecutive K time slots, the redundancy version (RV) applied in the TB based on the same data may be the same or may be at least partially different. For example, the RV applied to the TB in the nth time slot (transmission opportunity, repetition) may also be determined based on the value of a specific field (e.g., RV field) in the DCI.

[0044] In the case where the resources allocated in K consecutive time slots and the UL, DL or flexible (Flexible) of each time slot specified by at least one of the uplink and downlink communication direction indication information for TDD control (for example, "TDD-UL-DL-ConfigCommon", "TDD-UL-DL-ConfigDedicated" of RRC IE) and the time slot format identifier (Slot format indicator) of DCI (for example, DCI format 2_0) have different communication directions in at least one codeword, it can also be set not to send (or not receive) the resources of the time slot containing the codeword.

[0045] In Rel.15, Figure 1A As shown, the PUSCH is repeatedly transmitted across multiple time slots (in time slot units), but after Rel.16, it is assumed that the PUSCH is repeatedly transmitted in units shorter than time slots (for example, in sub-time slot units, in mini-time slot units, or in units of a specific number of symbols) (refer to Figure 1B ).

[0046] exist Figure 1B In , the repetition coefficient K=4, but the value of K is not limited thereto. In addition, the nth repetition may also be referred to as the nth transmission opportunity (transmission occasion), etc., and may also be identified by a repetition index k (0≤k≤K-1). In addition, Figure 1B, the repeated transmission of a PUSCH dynamically scheduled by DCI (eg, a PUSCH based on a dynamic grant) is shown, but it can also be applied to the repeated transmission of a PUSCH based on a set grant.

[0047] The UE may also determine the symbol allocation for PUSCH transmission (e.g., PUSCH with k=0) in a specific time slot based on the starting symbol S and the number of symbols L (e.g., StartSymbol and length) determined based on the value m of a specific field (e.g., TDRA field) in the DCI of the PUSCH. In addition, the UE may also determine the specific time slot based on the Ks information determined based on the value m of a specific field (e.g., TDRA field) of the DCI.

[0048] The UE may also dynamically receive information indicating the repetition coefficient K (e.g., number of repetitions) through downlink control information. The repetition coefficient may also be determined based on the value m of a specific field (e.g., TDRA field) in the DCI. For example, a table defining the correspondence between the bit value notified through the DCI, the repetition coefficient K, the start symbol S, and the number of symbols L may also be supported.

[0049] Figure 1A The slot-based repetition transmission shown may also be referred to as repetition transmission type A (eg, PUSCH repetition type A). Figure 1B The sub-slot based repetition transmission shown may also be referred to as repetition transmission Type B (eg, PUSCH repetition Type B).

[0050] The UE may be configured to apply at least one of the repetition transmission type A and the repetition transmission type B. For example, the repetition transmission type applied by the UE may be notified from the base station to the UE through higher layer signaling (eg, PUSCH RepTypeIndicator).

[0051] Either the repetition transmission type A or the repetition transmission type B may be configured for the UE for each DCI format that schedules the PUSCH.

[0052] For example, regarding the first DCI format (e.g., DCI format 0_1), when the higher layer signaling (e.g., PUSCH RepTypeIndicator-A or DCIFormat0_1) is set to repetition type B (e.g., PUSCH-RepTypeB), the UE applies repetition type B to PUSCH repetition transmission scheduled by the first DCI format. In other cases (e.g., when PUSCH-RepTypeB is not set or when PUSCH-RepTypA is set), the UE applies repetition type A to PUSCH repetition transmission scheduled by the UE by the first DCI format.

[0053] (Invalid code mode)

[0054] In the case of applying repetitive transmission type B to PUSCH transmission, information related to symbols (or symbol patterns) that cannot be used for PUSCH transmission is also being studied. Symbol patterns that cannot be used for PUSCH transmission may also be referred to as invalid symbol patterns, Invalid symbol patterns, invalid symbol patterns, etc.

[0055] The use of at least one of higher layer signaling and DCI to notify the invalid symbol pattern is under study. The DCI may also be a specific DCI format (eg, at least one of DCI formats 0_1 and 0_2).

[0056] For example, the first high-layer parameter is used to notify the UE of information related to the invalid symbol pattern that cannot be used for PUSCH transmission. In addition, the DCI may be used to notify the UE of whether the information related to the invalid symbol pattern is applied or not. In this case, a bit field (a field for notifying whether the invalid symbol pattern is applied or not) for indicating whether the information related to the invalid symbol pattern is applied or not may also be set in the DCI.

[0057] In addition, the second high-level parameter may be used to notify the UE of the setting of the notification field (or additional bit) in the DCI. That is, when the UE is notified of information related to the invalid symbol pattern through the first high-level parameter, it may also decide whether to apply the information related to the invalid symbol pattern based on the second high-level parameter and the DCI.

[0058] In the case where the first high-level parameter is not notified or set, the UE may also control the transmission of the PUSCH without considering the invalid symbol pattern. In the case where the first high-level parameter is notified or set, the UE may also determine whether the invalid symbol pattern is applied based on the second high-level parameter and the DCI. For example, in the case where an additional bit (or a specific field) indicating whether the invalid symbol pattern is applied is added to the DCI through the second high-level parameter, the UE may also determine whether the invalid symbol pattern is applied based on the specific field.

[0059] The first high-layer parameter may be information notifying that the symbol pattern becomes invalid for PUSCH transmission, and for example, a bitmap format may be used (see Figure 2A ). Figure 2A The UE may also determine the resources that can be used for PUSCH transmission in one or more frequency bandwidths (e.g., BWP) based on the information related to the invalid symbol pattern (see Figure 2B ).

[0060] Here, a case where one or a common invalid symbol pattern is applied to a plurality of BWPs is shown, but a different invalid symbol pattern may be set or applied for each BWP.

[0061] (Nominal repetitions / Actual repetitions)

[0062] When repetition transmission type B is applied and repetition transmission is performed in units of subslots, a certain repetition transmission may cross a slot boundary depending on the repetition coefficient (K) and the data allocation unit.

[0063] Figure 3A An example of applying the repetition coefficient (K) of 4 and the PUSCH length (L) of 4 in the case of repetition transmission type B is shown. Figure 3A In this case, the PUSCH with k=3 is configured across the time slot boundary. In this case, the PUSCH can also be divided (or segmented) based on the time slot boundary and transmitted (refer to Figure 3B ).

[0064] Furthermore, it is also assumed that a time slot includes symbols that cannot be used for PUSCH transmission (for example, DL symbols or invalid symbols). Figure 3AThe case where a part of the symbols configured with k=1 in the PUSCH includes symbols (here, DL symbols) that cannot be used for the PUSCH transmission is shown. In such a case, the PUSCH transmission can also be performed using the symbols without the DL symbols (see Figure 3B ).

[0065] When symbols other than both ends of a certain PUSCH allocated symbol include DL symbols (or invalid symbols), PUSCH transmission may be performed using symbols other than the DL symbol portion. In such a case, PUSCH may be divided (or segmented).

[0066] exist Figure 3B , it is shown that in subslot-based repeated transmission, the PUSCH of k=1 (Rep#2) is divided into two (Rep#2-1 and #2-2) by DL codewords, and the PUSCH of k=3 (Rep#4) is divided into two (Rep#4-1 and #4-2) by the time slot boundary.

[0067] In addition, consider the repeated transmission before the DL symbol, invalid symbol or time slot boundary ( Figure 3A ) can also be called nominal repetitions. It takes into account the repetition of DL symbols, invalid symbols or time slot boundaries ( Figure 3B ) can also be called actual repetitions.

[0068] (Spatial relationship between SRS and PUSCH)

[0069] In Rel.15NR, the UE can also receive information (SRS setting information, such as parameters in the "SRS-Config" of the RRC control element) used for sending reference signals for measurement (such as sounding reference signals (SRS)).

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

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

[0072] The SRS resource set information may also include: SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, SRS resource type (for example, any one of periodic SRS (PeriodicSRS), semi-persistent SRS (Semi-Persistent SRS), aperiodic CSI (Aperiodic SRS)), and information on the usage of SRS.

[0073] Here, the SRS resource type may also represent any one of periodic SRS (Periodic SRS (P-SRS)), semi-persistent SRS (Semi-Persistent SRS (SP-SRS)), and aperiodic CSI (Aperiodic SRS (A-SRS)). In addition, the UE may also periodically (or periodically after activation) send P-SRS and SP-SRS, and send A-SRS based on the SRS request of the DCI.

[0074] In addition, the purpose (RRC parameter "usage", L1 (Layer-1) parameter "SRS-SetUse") may be, for example, beam management, codebook (CB), noncodebook (NCB), antenna switching, etc. SRS for codebook or non-codebook purposes may also be used to determine the precoder for SRI-based, codebook-based, or non-codebook-based PUSCH transmission.

[0075] For example, in the case of codebook-based transmission, the UE may also determine the precoder for PUSCH transmission based on SRI, Transmitted Rank Indicator (TRI) and Transmitted Precoding Matrix Indicator (TPMI). In the case of non-codebook-based transmission, the UE may also determine the precoder for PUSCH transmission based on SRI.

[0076] SRS resource information may also include SRS resource ID (SRS-ResourceId), SRS port number, SRS port number, send comb, SRS resource mapping (for example, time and / or frequency resource location, resource offset, resource period, number of repetitions, number of SRS code elements, SRS bandwidth, etc.), jump association information, SRS resource type, sequence ID, SRS spatial relationship information, etc.

[0077] The spatial relationship information of the SRS (e.g., "spatialRelationInfo" of the RRC information element) may also indicate the spatial relationship information between a specific reference signal and the SRS. The specific reference signal may also be at least one of a synchronization signal / broadcast channel (Synchronization Signal / Physical Broadcast Channel (SS / PBCH)) block, a channel state information reference signal (CSI-RS), and an SRS (e.g., other SRS). The SS / PBCH block may also be referred to as a synchronization signal block (SSB).

[0078] The spatial relationship information of SRS 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 reference signal.

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

[0080] The spatial relationship information of the SRS may also include a serving cell index, a BWP index (BWP ID), etc. corresponding to the above-mentioned specific reference signal.

[0081] When spatial relationship information related to SSB or CSI-RS and SRS is set for a certain SRS resource, the UE may also use the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter (spatial domain receive filter) used for receiving the SSB or CSI-RS to transmit the SRS resource. In this case, the UE may also assume that the UE receive beam of the SSB or CSI-RS is the same as the UE transmit beam of the SRS.

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

[0083] The UE may also determine the spatial relationship of the PUSCH scheduled by the DCI based on the value of a specific field (e.g., SRS resource identifier (SRI) field) in the DCI (e.g., DCI format 0_1). Specifically, the UE may also use the spatial relationship information of the SRS resource determined based on the value of the specific field (e.g., SRI) (e.g., "spatialRelationInfo" of the RRC information element) for PUSCH transmission.

[0084] When codebook-based transmission is used for PUSCH, the UE may be configured with two SRS resources for each SRS resource set through RRC, and one of the two SRS resources may be indicated through DCI (1-bit SRI field). When non-codebook-based transmission is used for PUSCH, the UE may be configured with four SRS resources for each SRS resource set through RRC, and one of the four SRS resources may be indicated through DCI (2-bit SRI field).

[0085] (Transmit Power Control for PUSCH)

[0086] In NR, the transmission power of PUSCH is controlled based on the TPC command (also called value, increase or decrease value, correction value, etc.) represented by the value of a specific field (also called TPC command field, etc.) in DCI.

[0087] For example, when the UE transmits PUSCH on the activated UL BWP b of the carrier f of the serving cell c using the parameter set (open-loop parameter set) with index j and the power control adjustment state with index l, the transmission power (P) of the PUSCH in the PUSCH transmission opportunity (transmission occasion) (also called transmission period, etc.) i is PUSCH , b, f, c (i, j, qd, l)) can also be expressed by the following formula (1).

[0088] Here, regarding the power control adjustment state, it can also be set by a high-level parameter whether it has multiple states (for example, 2 states) or a single state. In addition, when multiple power control adjustment states are set, one of the multiple power control adjustment states can also be identified by an index l (for example, l∈{0,1}). The power control adjustment state can also be referred to as a PUSCH power control adjustment state, a first state, a second state, etc.

[0089] Furthermore, the PUSCH transmission opportunity i is a specific period during which the PUSCH is transmitted, and may be composed of, for example, one or more symbols, one or more time slots, and the like.

[0090] [Mathematical formula 1]

[0091] (Formula 1)

[0092]

[0093] In formula (1), P CMAX，f，c (i) is, for example, the transmission power (also referred to as maximum transmission power, UE maximum output power, etc.) of the user terminal set for carrier f of serving cell c in transmission opportunity i. O_PUSCH，b，f，c (j) For example, it is a parameter related to the target reception power for activating UL BWP b of carrier f of service cell c set in parameter set j (for example, also called a parameter related to the transmission power offset, transmission power offset P0, target reception power parameter, etc.).

[0094] M PUSCH RB，b，f，c (i) is, for example, the number of resource blocks (bandwidth) allocated to the PUSCH for transmission opportunity i in the activated UL BWP b of the carrier f with a serving cell c and a subcarrier spacing μ. b，f，c (j) is a value provided by a higher layer parameter (for example, also referred to as msgA-Alpha, p0-PUSCH-Alpha, fraction factor, etc.).

[0095] PL b，f，c (q d ) is the path loss (path loss compensation) calculated by the user terminal, for example, using the index qd of the reference signal for the downlink BWP (path loss reference RS, DL RS for path loss measurement, PUSCH-PathlossReferenceRS) associated with the activated UL BWP b of the carrier f of the serving cell c.

[0096] Δ TF，b，f，c(i) is a transmission power adjustment component (transmission power adjustment component) (offset, transmission format compensation) for UL BWP b of carrier f of serving cell c.

[0097] f b，f，c (i, l) is the value of the TPC command of the power control adjustment state index l based on the activated UL BWP of the serving cell c and the carrier f of the transmission opportunity i (e.g., the power control adjustment state, the accumulated value of the TPC command, the value based on the closed loop). b，f，c (i, l) can also be expressed by formula (2). L can also be called a closed loop index.

[0098] [Mathematical formula 2]

[0099] (Formula 2)

[0100]

[0101] In formula (2), δ PUSCH，b，f，c (m, l) is the TPC command value in the PUSCH transmission opportunity m. C(D_i)-1 m＝0 δ PUSCH，b，f，c (m, l) is the K before the PUSCH transmission opportunity i-i0 PUSCH (i-i0) symbol and K before PUSCH transmission opportunity i PUSCH (i) Between code elements, group C (D i ) in a set of TPC command values ​​for a certain PUSCH transmission opportunity. Here, i0 is an integer greater than 1. The TPC command value in a certain PUSCH transmission opportunity can be either a TPC command represented by a TPC command field value in a DCI (e.g., DCI format 0_0 / 0_1 / 0_2) detected in an activated ULBWP b of a carrier f of a serving cell c, or a TPC command represented by a TPC command field value in a DCI (e.g., DCI format 2_2) having a CRC parity bit (parity bit) scrambled by a specific RNTI (Radio Network Temporary Identifier) ​​(e.g., TPC-PUSCH-RNTI) (e.g., CRC-scrambled) .

[0102] The closed loop index may also be based on a closed loop indicator field value in a (CRC-scrambled) DCI (e.g., DCI format 2_2) having CRC parity bits scrambled by a specific RNTI (Radio Network Temporary Identifier) ​​(e.g., TPC-PUSCH-RNTI). The closed loop indicator field may also be 0 bits (0) when a specific higher layer parameter (e.g., twoPUSCH-PC-AdjustmentStates) is not configured for the UE, and may have a bit length of 1 bit when the specific higher layer parameter is configured for the UE.

[0103] In addition, when a setting of power control of the PUSCH based on SRI is provided (e.g., a high-level parameter SRI-PUSCH-PowerControl), the UE may also obtain an association between a set of values ​​of the SRI field included in the DCI format for scheduling PUSCH transmission and the value of the closed loop index l provided by a specific high-level parameter (e.g., sri-PUSCH-ClosedLoopIndex). Next, the UE may also determine the value of l corresponding to the SRI field.

[0104] Like this, in NR, two independent closed-loop power controls are supported.

[0105] In addition, equations (1) and (2) are only examples and are not limited thereto. The user terminal can control the transmission power of the PUSCH based on at least one parameter illustrated in equations (1) and (2), and may include additional parameters or omit some parameters. In addition, in the above equations (1) and (2), the transmission power of the PUSCH is controlled according to each activated ULBWP of a carrier of a certain service cell, but is not limited thereto. At least a part of the service cell, carrier, BWP, and power control adjustment state may also be omitted.

[0106] (Multiple TRP)

[0107] In NR, one or more transmission / reception points (TRP) (multi-TRP) are being studied to use one or more panels (multi-panels) to perform DL transmission to the UE. In addition, the UE is studying to perform UL transmission to one or more TRPs (refer to Figure 4 ).

[0108] Multiple TRPs may correspond to the same cell identifier (cell identifier (ID)) or to different cell IDs. The cell ID may be a physical cell ID or a virtual cell ID.

[0109] However, in the NR specifications so far, how to control the repeated transmission of PUSCH in multiple panels / TRPs has not been fully studied. If the repeated transmission of PUSCH in multiple TRPs is not performed properly, there is a concern that throughput will decrease or communication quality will deteriorate.

[0110] More specifically, a study is being conducted on the repeated transmission of PUSCH in multiple TRPs based on one DCI, whereby multiple SRI / SRI combinations for multiple TRPs are indicated through the DCI. In this case, if the channel states between the UE and different TRPs are different, independent closed-loop power control for multiple TRPs is required (for example, power control corresponding to different TPC-associated indexes (for example, closed-loop indexes) and different SRI / SRI combinations).

[0111] Figure 5 This is a diagram showing an example of a method for indicating multiple SRIs for multiple TRPs based on one DCI. Figure 5 In the example shown, a situation is shown where repetition type B, four repetitions based on two TRPs, and each repetition is performed in four symbols, but the repetition is not limited to this.

[0112] exist Figure 5 In the example shown, repeated transmission of PUSCH is scheduled by a certain DCI. UE transmits PUSCH to TRP#1 in transmission opportunity #1, transmission opportunity #3-1, and transmission opportunity #4. In addition, UE transmits PUSCH to TRP#2 in transmission opportunity #2 and transmission opportunity #3-2. Each transmission opportunity is 4 code elements, but transmission opportunity #3 is a transmission opportunity across the slot boundary. Transmission opportunity #3-1 corresponds to the previous slot, and transmission opportunity #3-2 corresponds to the next slot. SRI#1 and SRI#2 correspond to TRP#1 and TRP#2, respectively.

[0113] exist Figure 5 In the example shown, preferably, SRI#1 and SRI#2 correspond to indexes (eg, closed loop indexes) associated with different TPCs, respectively. For example, preferably, SRI#1 corresponds to closed loop index l=0, and SRI#2 corresponds to closed loop index l=1.

[0114] In the current specifications, as described above, one TPC command for one closed-loop power control can be notified through one DCI. However, there is insufficient research on how to indicate multiple TPC commands for multiple closed-loop power controls through one DCI. Figure 5As shown, control suitable for multiple SRIs cannot be performed. In addition, in Rel.15 / 16, a maximum of two independent closed-loop power controls are supported, but if UL transmission across multiple TRPs is considered, a larger number of independent closed-loop power controls are required. Therefore, the inventors have come up with a control method for repeated PUSCH transmission to solve the problem.

[0115] 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.

[0116] In addition, in the present disclosure, panel, beam, uplink (UL) transmission entity, TRP, spatial relationship information (SRI), spatial relationship, control resource set (CORESET), 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, panel group, beam group, spatial relationship group, PUCCH group), CORESET pool can also be replaced with each other. In addition, panel identifier (ID) and panel can also be replaced with each other. TRP ID and TRP can also be replaced with each other.

[0117] In the present disclosure, index, ID, indicator, and resource ID may also be replaced with each other.

[0118] In the present disclosure, “A / B” may also mean “at least one of A and B”.

[0119] In the present disclosure, list, group, cluster, subset, etc. may also be replaced with each other. In the present disclosure, spatial relationship information (Spatial Relation Information (SRI)), SRS resource indicator (SRS Resource Indicator (SRI), (or SRI field)), SRS resource, precoder, etc. may also be replaced with each other.

[0120] In the present disclosure, spatial relationship information (SRI), a combination of SRIs, SRI for codebook-based transmission, a combination of non-codebook-based SRIs, spatialRelationInfo, UL TCI, TCI status, Unified TCI, QCL, etc. may also be replaced with each other.

[0121] In the following embodiments, PUSCH across multiple TRPs may be replaced with repeated PUSCH across multiple TRPs, or simply replaced with repeated PUSCH, repeated transmission, multiple PUSCH transmissions, etc.

[0122] (Wireless Communication Method)

[0123] <First Embodiment>

[0124] In the first embodiment, a specific index determined by the UE for repeated transmission of a PUSCH using multiple TRPs is described. The specific index may also be an index associated with TPC (e.g., a closed-loop index). The UE may also control multiple PUSCH transmissions based at least on the specific index.

[0125] Compared with Rel.15 / 16, the number of candidates for a specific index (eg, closed-loop index) determined by the UE may also be increased to a specific number (eg, N). The specific number N may also be, for example, 4. The possible value of the specific index may also be, for example, greater than 0 and less than N-1.

[0126] At this time, in the RRC setting, the correspondence between the spatial relationship information (SRI) and the N specific indexes may also be set for the UE. The UE may also be updated with respect to the correspondence through higher layer signaling (eg, MAC CE).

[0127] The UE may determine the value of the specific index corresponding to each combination of SRI / SRI specified by the DCI based on the correspondence relationship.

[0128] In addition, when the candidate number of a specific index is N, the number of bits of the field indicating closed-loop power control (e.g., closed-loop indicator field) included in a specific DCI format (e.g., DCI format 2_2) may also be increased to log2(N) bits compared to Rel.15 / 16. For example, when N=4, the field may also have a bit length of 2 bits.

[0129] According to the first embodiment, even in the case of repeated transmission of PUSCH using multiple TRPs, it is possible to appropriately determine the index associated with TPC.

[0130] <Second Embodiment>

[0131] In the second embodiment, the number of bits of the TPC command field included in a DCI for scheduling PUSCH transmission across multiple TRPs and the association between the TPC command field and an index associated with TPC (e.g., a closed loop index) are described. The UE can also control multiple PUSCH transmissions based on at least the index.

[0132] Compared with the number of bits of Rel.15 / 16, the number of bits of the TPC command field included in a DCI that schedules PUSCH transmission across multiple TRPs can also be extended to a specific number of bits (e.g., 2M). In the present disclosure, M can be either the number of TRPs or the number of spatial relationship information (SRI) that can be indicated for PUSCH transmission across multiple TRPs.

[0133] For example, for codebook based transmission, when the SRI for PUSCH transmission for two TRPs is indicated via DCI, the TPC command field may also be extended to 4 bits.

[0134] The association between the extended TPC command field and a specific index associated with TPC (e.g., a closed loop index) may also be based on at least one of the following associations 1 or 2. The closed loop index is described below, but the closed loop index of the present disclosure may also be replaced by any specific index associated with TPC.

[0135] [Relation 1]

[0136] When the extended TPC command field is divided into a specific number of bits (for example, 2, 4, etc.), an xth (x is an arbitrary integer) small (or large) specific number of bits can also be associated with the xth spatial relationship information (SRI) / SRI combination indicated by the DCI.

[0137] Fig. 6A FIG. 1 is a diagram showing an example of the association between the extended TPC command field and the closed loop index. Fig. 6A In the example shown, the case where M=2 is shown, the first (first) SRI corresponds to the closed-loop index l=2, and the second (second) SRI corresponds to the closed-loop index l=1. Fig. 6A In the example, the left side of the TPC command field represents the low-order bits, and the right side represents the high-order bits. At this time, the low-order 2 bits (n0 and n1) of the TPC command field correspond to the closed-loop index l=2 corresponding to the first SRI, and the high-order 2 bits (n2 and n3) correspond to the closed-loop index l=1 corresponding to the second SRI.

[0138] In addition, in the figures shown in the present disclosure, the SRI, the value of the closed loop index, the number of bits and the value of the TPC command field are all examples and are not limited to this. In addition, in the figures shown in the present disclosure, the left side of the TPC command field represents the lower bits and the right side represents the higher bits, but it is not limited to this.

[0139] [Relation 2]

[0140] When the extended TPC command field is divided into every specific number of bits (for example, 2), the x-th smallest (or largest) specific number of bits can also be associated with the spatial relationship information (SRI) corresponding to the x-th smallest (or largest) closed-loop index indicated by the DCI.

[0141] In the present disclosure, “small” may be replaced by “large.” In addition, low bit and lowest bit may be replaced by high bit and highest bit, respectively.

[0142] Figure 6B FIG. 1 is a diagram showing an example of the association between the extended TPC command field and the closed loop index. Figure 6B In the example shown, the case of M=2 is shown, the first (first) SRI corresponds to the closed-loop index l=2, and the second (second) SRI corresponds to the closed-loop index l=1. At this time, the lower 2 bits (n0 and n1) of the TPC command field correspond to the closed-loop index l=1 corresponding to the second SRI, and the upper 2 bits (n2 and n3) correspond to the closed-loop index l=2 corresponding to the first SRI.

[0143] In addition, in the case where at least two of the multiple SRI / SRI combinations indicated by DCI correspond to the same closed-loop index, the association between the extended TPC command field and the specific index associated with TPC may also follow at least one of the following associations 2-1 or 2-2.

[0144] "Relation 2-1"

[0145] The valid bits of the TPC command may also be determined based on the values ​​of different closed-loop indices corresponding to the specified SRI / SRI combination. For the TPC command field, the UE may also determine the valid bits based on the number of different closed-loop indices.

[0146] Specifically, the UE may also determine that a specific number (e.g., 2L) of low-order (or high-order) bits of the TPC command field included in the DCI are valid bits. The bits other than these may also be set to fixed values ​​(e.g., 0 or 1). In addition, the UE may also ignore the bits other than these. At this time, L may also be the number of values ​​corresponding to different closed-loop indexes of the SRI.

[0147] Fig. 7A FIG. 4 is a diagram showing another example of the association between the extended TPC command field and the closed loop index. Fig. 7AIn the example shown, the first SRI and the second SRI correspond to the closed-loop index l = 1, and the third SRI corresponds to the closed-loop index l = 2. At this time, the lowest 2 bits (n0 and n1) of the TPC command field correspond to the closed-loop index l = 1 corresponding to the first SRI and the second SRI, and the second lowest 2 bits (n2 and n3) correspond to the closed-loop index l = 2 corresponding to the third SRI.

[0148] At this time, the most significant 2 bits (n4 and n5) of the TPC command field may be set to fixed values ​​(eg, 0 or 1).

[0149] "Relation 2-2"

[0150] The valid bits of the TPC command may also be determined based on the number of TRPs (PUSCH) or at least one of the number of SRIs that can be indicated for PUSCH transmission based on multiple TRPs. For the TPC command field, the UE may also determine the valid bits based on the number of TRPs (PUSCH) or at least one of the number of SRIs that can be indicated for PUSCH transmission based on multiple TRPs.

[0151] Specifically, the UE may also determine that a specific number (eg, 2M) of bits of the TPC command field included in the DCI are valid bits. In this case, M may be the number of TRPs or the number of SRIs that can be indicated for PUSCH transmission based on multiple TRPs.

[0152] Regarding the 2L bits (L is, for example, the number of values ​​of different closed-loop indexes corresponding to SRI) in the 2M bits of the TPC command field of the DCI, the TPC command corresponding to any closed-loop index may also be indicated. The bits other than these (the remaining 2M-2L bits) may also be set to the same value as any one of the values ​​of the valid bits. That is, the bits other than these may also be the values ​​of any one of the values ​​of the valid bits copied. The bits other than these may also be copied to the TPC command field values ​​corresponding to at least two of the multiple SRIs and corresponding to the closed-loop indexes of the same value.

[0153] Figure 7B FIG. 1 is a diagram showing another example of the association between the extended TPC command field and the closed loop index. Figure 7B In the example shown, the first SRI and the second SRI correspond to the closed-loop index l = 1, and the third SRI corresponds to the closed-loop index l = 2. At this time, the least significant 2 bits (n0 and n1) of the TPC command field correspond to the closed-loop index l = 1 corresponding to the first SRI and the second SRI, and the second most significant 2 bits (n4 and n5) correspond to the closed-loop index l = 2 corresponding to the third SRI.

[0154] At this time, n2 and n3 of the TPC command field are copied to the TPC command field values ​​of the closed-loop index corresponding to at least two of the multiple SRIs and corresponding to the same value. That is, n2 and n3 of the TPC command field are set to the same values ​​as n0 and n1.

[0155] [Modification of the Second Embodiment]

[0156] When dynamic switching between PUSCH transmission using one TRP and PUSCH transmission using multiple TRPs is supported, one or more SRIs may also be indicated through DCI. At this time, when one SRI is specified through DCI, the extended TPC command field may also follow at least one of the following methods 1 or 2.

[0157] Method 1

[0158] The UE may also determine that a specific number (e.g., 2) of the lowest (or highest) bits of the TPC command field included in the DCI are valid bits. The bits other than these may also be set to fixed values ​​(e.g., 0 or 1). In addition, the UE may also ignore the bits other than these.

[0159] Fig. 8A This is a diagram showing an example of the association between the extended TPC command field and the spatial relationship information (SRI). At this time, the least significant 2 bits (n0 and n1) of the TPC command field are used in the TPC command field for the closed-loop index corresponding to the SRI. On the other hand, the remaining 2 bits (n2 and n3) are set to a fixed value (here, 0).

[0160] Method 2

[0161] The UE may also determine that a specific number (eg, 2M) of bits of the TPC command field included in the DCI are valid bits. In this case, M may be the number of TRPs or the maximum number of SRIs that can be indicated for PUSCH transmission based on multiple TRPs.

[0162] A portion of the 2M bits of the TPC command field of the DCI (e.g., 2 bits) may also indicate a TPC command corresponding to any closed-loop index, and the remaining bits (the remaining 2M-2 bits) may also be set to the same value as the portion of the bits.

[0163] Figure 8BThis is a diagram showing an example of the association between the extended TPC command field and SRI. At this time, the least significant 2 bits (n0 and n1) of the TPC command field are used in the TPC command field for the closed-loop index corresponding to the SRI. On the other hand, the remaining 2 bits (n2 and n3) are respectively set as valid bits, that is, they are set to the same values ​​as n0 and n1.

[0164] According to the variation of the second embodiment, regardless of whether the combination of SRI / SRI specified by the DCI is one or multiple, the TPC command for each SRI can be appropriately determined using the extended TPC command field.

[0165] According to the second embodiment and the modification of the second embodiment described above, it is possible to appropriately set the association between the extended TPC command field and the index associated with TPC.

[0166] <Third Embodiment>

[0167] In the third embodiment, the UE capability (UE capability) of the index associated with TPC (eg, closed loop index) is described. The UE may also report (send) information on whether it has the capability to the NW.

[0168] The UE capability associated with the index associated with TPC may also be defined as the maximum value of the total number of such indices for multiple (e.g., all) TRPs in a certain serving cell. That is, the UE capability may also be defined as the maximum value of the total number of such indices for multiple PUSCHs.

[0169] In addition, the UE capability related to the index associated with TPC can also be defined as the maximum number of the index for each TRP in a certain service cell. That is, the UE capability can also be defined as the maximum number of the index for one PUSCH among multiple PUSCHs.

[0170] In addition, the embodiments of the present disclosure may also be applied when the UE reports the UE capability corresponding to the above at least one to the NW, and when the above at least one UE capability is set / activated / indicated for the UE through high-layer signaling. The embodiments of the present disclosure may also be applied when specific high-layer parameters (e.g., information for activating the extended TPC command field, information for setting a closed-loop index greater than 2, parameters for activating M-TRP repetition, etc.) are set / activated / indicated for the UE.

[0171] (Wireless Communication System)

[0172] 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.

[0173] Fig. 9 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.

[0174] 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 (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0175] 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.

[0176] 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)).

[0177] The wireless communication system 1 may also include: a base station 11 forming a macro cell C1 with a relatively wide coverage; and a base station 12 (12a-12c) configured in the macro cell C1 and configured in 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. In the following, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

[0178] 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).

[0179] 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 (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0180] 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).

[0181] Multiple base stations (e.g., RRH) 10 may also be connected via wired (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 of 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 (relay) may also be referred to as an IAB node.

[0182] 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), and a Next Generation Core (NGC).

[0183] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0184] 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.

[0185] 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 used as the radio access schemes for UL and DL.

[0186] As downlink channels, the wireless communication system 1 may use 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)), etc.

[0187] In addition, 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 can also be used in the wireless communication system 1.

[0188] User data, high-layer control information, system information block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, master information block (MIB) can also be transmitted through PBCH.

[0189] The lower layer control information may 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.

[0190] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling 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.

[0191] 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.

[0192] A search space may also correspond to one or more PDCCH candidates corresponding to 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.

[0193] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0194] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0195] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, 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. can also be transmitted.

[0196] 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 an SS / PBCH block, SS Block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as a reference signal.

[0197] 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 (DMRSS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0198] (Base Station)

[0199] Fig.10 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 be provided with more than one.

[0200] 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.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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, such as an array antenna.

[0206] 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.

[0207] 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.

[0208] 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 and control information obtained from the control unit 110 to generate a bit string to be sent.

[0209] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filtering, 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.

[0210] The transmitting and receiving unit 120 (RF unit 122 ) may perform modulation, filtering, 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 .

[0211] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may perform amplification, filtering, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0212] 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), filtering processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0213] 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 (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0214] The transmission path interface 140 can also send and receive signals (return signaling) between 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.

[0215] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 120 , the transmitting and receiving antenna 130 , and the transmission path interface 140 .

[0216] The transmitting and receiving unit 120 may also transmit a downlink control information (Downlink Control Information (DCI)) for a plurality of uplink shared channels (Physical Uplink Shared Channel (PUSCH)). The control unit 110 may also control the reception of the transmitted PUSCH based on the extended TPC command field included in the DCI and the spatial relation information (Spatial Relation Information (SRI)) corresponding to the index associated with the TPC (first and second embodiments).

[0217] (User Terminal)

[0218] Fig.11 1 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 transmitting / receiving unit 220, and a transmitting / receiving antenna 230. In addition, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each include one or more.

[0219] 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.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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.

[0226] 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.

[0227] The sending and receiving unit 220 (sending processing unit 2211) 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.

[0228] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filtering, 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.

[0229] 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.

[0230] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filtering, 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 .

[0231] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filtering, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0232] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filtering processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0233] 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.

[0234] 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 .

[0235] The transmitting and receiving unit 220 may also receive a downlink control information (Downlink Control Information (DCI)) for a plurality of uplink shared channels (Physical Uplink Shared Channel (PUSCH)). The control unit 210 controls the transmission of the PUSCH based on the extended TPC command field included in the DCI and the spatial relation information (Spatial Relation Information (SRI)) corresponding to the index associated with the TPC (first and second embodiments).

[0236] The control unit 210 may also control the transmission of the PUSCH based on the SRI corresponding to each bit of the extended TPC command field divided into a specific number (second embodiment).

[0237] The control unit 210 may also determine the valid bits in the extended TPC command field based on at least one of the number of indexes associated with different TPCs, the number of PUSCHs, and the number of SRIs (second embodiment).

[0238] The control unit 210 may also control to report capability information, the capability information being defined as a maximum value of the total number of indices associated with the TPC for the plurality of PUSCHs or a maximum number of indices associated with the TPC for one PUSCH among the plurality of PUSCHs.

[0239] (Third embodiment).

[0240] (Hardware Structure)

[0241] 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.

[0242] 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.

[0243] 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.12 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0244] 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.

[0245] 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.

[0246] 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.

[0247] 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.

[0248] 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.

[0249] 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.

[0250] 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)), etc.), 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.

[0251] 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 installed by the transmitting unit 120a (220a) and the receiving unit 120b (220b) separately physically or logically.

[0252] 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).

[0253] 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.

[0254] 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), a field programmable gate array (FPGA), etc., and the hardware may also be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented by at least one of these hardware.

[0255] (Variation Example)

[0256] 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.

[0257] 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).

[0258] 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.

[0259] 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.

[0260] 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.

[0261] 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.

[0262] 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, 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.

[0263] 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.

[0264] 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.

[0265] In addition, when one time slot or one mini time slot is referred to as TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) may be the minimum time unit for scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit for scheduling may also be controlled.

[0266] 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.

[0267] In addition, long TTI (e.g., normal TTI, subframe, etc.) can also be interpreted as a TTI with a time length exceeding 1 ms, and short TTI (e.g., shortened TTI, etc.) can also be interpreted as a TTI with a TTI length less than that of long TTI and greater than 1 ms.

[0268] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may also 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.

[0269] 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.

[0270] 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.

[0271] In addition, a resource block may also be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0272] 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.

[0273] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0274] At least one of the configured BWPs may be activated, and the UE may not assume that it will transmit or receive a specific signal / channel other than the activated BWP. In addition, "cell", "carrier" and the like in the present disclosure may also be interpreted as "BWP".

[0275] 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.

[0276] 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.

[0277] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. In addition, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. The 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.

[0278] 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.

[0279] Furthermore, information, signals, etc. can be output from a high layer (upper layer) to a low layer (lower layer) or from a low layer to a high layer. Information, signals, etc. can also be input and output via a plurality of network nodes.

[0280] 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.

[0281] 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.

[0282] 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)).

[0283] 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).

[0284] 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).

[0285] 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.

[0286] 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.

[0287] 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.

[0288] 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.

[0289] 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 cell, and pico cell.

[0290] 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.

[0291] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” are used interchangeably.

[0292] In some cases, a mobile station is also referred to as a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a hand set, a user agent, a mobile client, a client, or some other appropriate terminology.

[0293] 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.

[0294] In addition, the base station in the present disclosure can also be interpreted as a user terminal. For example, the various methods / implementations of the present disclosure can 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 can also be called device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the user terminal 20 has the functions of the above-mentioned base station 10. In addition, expressions such as "uplink" and "downlink" can also be interpreted as expressions corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can also be interpreted as side channels.

[0295] Likewise, the user terminal in the present disclosure may also be interpreted as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0296] In the present disclosure, the actions are assumed to be performed by the 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 actions performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, Mobility Management Entity (MME)), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0297] 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.

[0298] 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.).

[0299] 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”.

[0300] 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 a first and a second element 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.

[0301] The term "determining" as used in this disclosure may include a variety of actions in some cases. For example, "determining" may also be viewed as "judging", calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc.

[0302] In addition, "judgment (decision)" can also be regarded as a situation of "judgment (decision)" on receiving (for example, receiving information), transmitting (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc.

[0303] In addition, "judgment (decision)" can also be regarded as a situation of "judgment (decision)" on resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment (decision)" can also be regarded as a situation of "judgment (decision)" on some actions.

[0304] In addition, "judgment (decision)" can also be interpreted as "assuming (assuming)", "expecting (expecting)", "considering (considering)" and so on.

[0305] 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 can include the situation where there are one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The combination or connection between the elements can be physical, logical, or a combination of these. For example, "connection" can also be interpreted as "access".

[0306] 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.

[0307] 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".

[0308] 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.

[0309] 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.

[0310] 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 present 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 receiving unit receives a downlink control information DCI for repeated transmission of a physical uplink shared channel PUSCH; and A control unit that, when a plurality of spatial relationship information is specified through the DCI for repeated transmission of the PUSCH, controls the transmission power of the PUSCH based on a specific number of lower bits for a transmission power control TPC command corresponding to a first closed-loop index and a specific number of higher bits for a TPC command corresponding to a second closed-loop index contained in the DCI, and based on at least one of the first closed-loop index and the second closed-loop index corresponding to the plurality of spatial relationship information.

2. The terminal according to claim 1, wherein: When the plurality of spatial relationship information are specified through the DCI, the control unit uses only one of the specific number of lower bits and the specific number of upper bits and ignores the other in controlling the transmission power of the PUSCH.

3. A wireless communication method of a terminal, comprising: A step of receiving a downlink control information DCI for repeated transmission of a physical uplink shared channel PUSCH; and In a case where a plurality of spatial relationship information is specified through the DCI for repeated transmission of the PUSCH, a step of controlling the transmission power of the PUSCH based on a specific number of low-order bits for a transmission power control TPC command corresponding to a first closed-loop index and a specific number of high-order bits for a TPC command corresponding to a second closed-loop index contained in the DCI, and based on at least one of the first closed-loop index and the second closed-loop index corresponding to the plurality of spatial relationship information.

4. A base station, comprising: A transmitting unit, transmitting a downlink control information DCI for repeated transmission of a physical uplink shared channel PUSCH; and a control unit, wherein, when a plurality of spatial relationship information for repeated transmission of the PUSCH is specified for a terminal through the DCI, the DCI includes a specific number of low-order bits for a transmit power control TPC command corresponding to a first closed-loop index and a specific number of high-order bits for a TPC command corresponding to a second closed-loop index in order to enable the terminal to control the transmit power of the PUSCH, At least one of the first closed-loop index and the second closed-loop index corresponds to the plurality of spatial relationship information.

5. A system comprising a terminal and a base station, The terminal has: A receiving unit, receiving a downlink control information DCI for repeated transmission of a physical uplink shared channel PUSCH; as well as a control unit that, when a plurality of spatial relationship information is specified by the DCI for repeated transmission of the PUSCH, controls the transmission power of the PUSCH based on a specific number of lower bits for a transmission power control TPC command corresponding to a first closed-loop index and a specific number of upper bits for a TPC command corresponding to a second closed-loop index included in the DCI, and based on at least one of the first closed-loop index and the second closed-loop index corresponding to the plurality of spatial relationship information, The base station has: A sending unit, sending the one DCI; as well as A control unit, when the multiple spatial relationship information for repeated transmission of the PUSCH is specified for the terminal through the DCI, controls the DCI to include the specific number of low-order bits and the specific number of high-order bits in order to enable the terminal to control the transmission power of the PUSCH.

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