Terminal, wireless communication method, and base station

Abstract

A terminal according to one aspect of the present disclosure includes: a receiving unit that receives at least one of spatial relation information of an uplink shared channel and information related to a repetition factor; and a control unit that performs control so that, when a plurality of pieces of the spatial relation information are set, different pieces of the spatial relation information are applied to a plurality of uplink shared channels that are repeatedly transmitted.

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 a Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized for the purpose of further high-speed data rates, low latency, etc. (Non-Patent Document 1). In addition, for the purpose of further large capacity and high performance of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9), LTE-Advanced (3GPP Rel.10-14) has been standardized.

[0003] Research is also underway on successor systems to LTE (for example, also referred to as the 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 and later, etc.).

[0004] Prior Art Documents

[0005] Non-Patent Documents

[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, retransmission is supported in the UL data channel (e.g., PUSCH). The UE performs control to transmit the PUSCH over multiple time slots (e.g., consecutive K time slots) according to the retransmission coefficient K set from the network (e.g., base station). That is, in the case of performing retransmission, each PUSCH is transmitted in a different time slot (e.g., time slot unit).

[0009] On the other hand, after Rel.16, it is being studied to perform multiple PUSCH transmissions within one time slot in the case of performing PUSCH retransmission. That is, each PUSCH is transmitted in a unit shorter than the time slot (e.g., sub - time slot unit, mini - time slot unit).

[0010] In addition, after Rel.16, it is also envisaged to apply PUSCH retransmission in the case of communicating with multiple transmission and reception points (TRPs).

[0011] However, how to control PUSCH retransmission in the case of using multiple TRPs has not been sufficiently studied.

[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 retransmission even in the case of communicating using multiple TRPs.

[0013] Solution to the problem

[0014] A terminal according to one aspect of the present disclosure is characterized by comprising: a receiving unit that receives at least one of spatial relation information of an uplink shared channel and information related to a retransmission coefficient; and a control unit that performs control to apply different spatial relation information to multiple uplink shared channels to which retransmission is applied when multiple pieces of the spatial relation information are set.

[0015] Advantageous effects of the invention

[0016] According to one aspect of the present disclosure, retransmission can be appropriately controlled even in the case of communicating using multiple TRPs. Description of the drawings

[0017] Figure 1A And Figure 1B is a diagram showing an example of PUSCH retransmission.

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

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

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

[0021] Figure 5 This is a diagram showing an example of the PUSCH repeated transmission control related to the first mode.

[0022] Figure 6A And Figure 6B This is a diagram showing another example of the PUSCH repeated transmission control related to the first mode.

[0023] Figure 7A And Figure 7B This is a diagram showing an example of the PUSCH repeated transmission control related to the second mode.

[0024] Figure 8A And Figure 8B This is a diagram showing another example of the PUSCH repeated transmission control related to the second mode.

[0025] Figure 9A And Figure 9B This is a diagram showing another example of the PUSCH repeated transmission control related to the second mode.

[0026] Figure 10 This is a diagram showing an example of the schematic structure of a wireless communication system related to one embodiment.

[0027] Figure 11 This is a diagram showing an example of the structure of a base station related to one embodiment.

[0028] Figure 12 This is a diagram showing an example of the structure of a user terminal related to one embodiment.

[0029] Figure 13 This is a diagram showing an example of the hardware structure of a base station and a user terminal related to one embodiment. Detailed Embodiment

[0030] (Repeated Transmission)

[0031] In Rel.15, repeated transmission is supported during data transmission. For example, the base station (network (NW), gNB) repeats the transmission of DL data (e.g., downlink shared channel (PDSCH)) a specific number of times. Or, the UE repeats the transmission of UL data (e.g., uplink shared channel (PUSCH)) a specific number of times.

[0032] Figure 1A This is a diagram showing an example of repeated transmission of PUSCH. In Figure 1A an example is shown where a specified number of repeated PUSCHs are scheduled by a single DCI. The number of repetitions is also referred to as the repetition factor K or the aggregation factor K.

[0033] In Figure 1A the repetition factor K = 4, but the value of K is not limited to this. Also, the nth repetition is also referred to as the nth transmission occasion, etc., and can also be identified by the repetition index k (0 ≤ k ≤ K - 1). In addition, in Figure 1A an example is shown of the repeated transmission of a PUSCH (e.g., a PUSCH based on dynamic authorization) scheduled dynamically by DCI, and it can also be applied to the repeated transmission of a PUSCH based on configured grant.

[0034] For example, in Figure 1A the UE semi - statically receives information indicating the repetition factor K (e.g., aggregationFactorUL or aggregationFactorDL) through higher - layer signaling. Here, the higher - layer signaling can be, for example, any one of RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, reporting information, etc., or a combination of them.

[0035] MAC signaling can use, for example, MAC control elements (MAC CE (Control Element)), MAC PDUs (Protocol Data Units), etc. Reporting information can be, for example, the Master Information Block (MIB), System Information Block (SIB), Remaining Minimum System Information (RMSI), etc.

[0036] The UE controls the reception processing (e.g., at least one of reception, demapping, demodulation, decoding) of the PDSCH or the transmission processing (e.g., at least one of transmission, mapping, modulation, encoding) of the PUSCH in K consecutive time slots according to at least one of the following field values (or the information indicated by the field value) in the DCI:

[0037] · Allocation of time domain resources (e.g., start symbol, number of symbols in each time slot, etc.),

[0038] · Allocation of frequency domain resources (e.g., a specific number of resource blocks (RB: Resource Block), a specific number of resource block groups (RBG: Resource Block Group)),

[0039] · Modulation and coding scheme (MCS) index,

[0040] · Structure (configuration) of the demodulation reference signal (DMRS) for PUSCH demodulation,

[0041] · Spatial relation information of PUSCH, or the state (TCI state) of the transmission configuration indication (TCI: Transmission Configuration Indication or Transmission Configuration Indicator).

[0042] Among consecutive K time slots, the same symbol allocation can also be applied. In Figure 1A it shows the case where the PUSCH in each time slot is allocated to a specific number of symbols starting from the beginning of the time slot. The same symbol allocation can also be determined in the above time domain resource allocation among time slots.

[0043] For example, the UE can also determine the symbol allocation in each time slot based on the start symbol S and the number of symbols L (e.g., Start and Length Indicator (SLIV)) determined according to the value m of a specific field (e.g., TDRA field) in the DCI. In addition, the UE can also determine the first time slot based on the K2 information determined according to the value m of a specific field (e.g., TDRA field) of the DCI.

[0044] On the other hand, among these consecutive K time slots, the redundancy version (RV) applied in the transport block (TB) based on the same data can be the same, or at least partially different. For example, the RV applied to the TB in the nth time slot (transmission opportunity, repetition) can also be determined according to the value of a specific field (e.g., RV field) in the DCI.

[0045] The resources allocated in K consecutive time slots can also be set such that, when the communication directions in at least one of the UL, DL, or Flexible and at least 1 symbol in each time slot specified by the uplink-downlink communication direction indication information for TDD control (e.g., "TDD-UL-DL-ConfigCommon", "TDD-UL-DL-ConfigDedicated" of RRC IE) and the slot format indicator of DCI (e.g., DCI format 2_0) are different, the resources of the time slot containing that symbol are not transmitted (or not received).

[0046] In Rel.15, as Figure 1A shown, PUSCH is repeatedly transmitted in (time slot units) over multiple time slots, but after Rel.16, it is envisioned that PUSCH is repeatedly transmitted in a unit shorter than a time slot (e.g., sub-time slot unit, mini-slot unit, or specific number of symbol unit) (refer to Figure 1B ).

[0047] In Figure 1B , the repetition factor K = 4, but the value of K is not limited to this. Also, the nth repetition is also referred to as the nth transmission occasion, etc., and can also be identified by the repetition index k (0 ≤ k ≤ K - 1). Also, in Figure 1B , the repeated transmission of PUSCH dynamically scheduled by DCI (e.g., PUSCH based on dynamic grant) is shown, but it can also be applied to the repeated transmission of PUSCH based on configured grant.

[0048] The UE can also determine the symbol allocation for PUSCH transmission in a specific time slot (e.g., PUSCH with k = 0) based on the start symbol S and the number of symbols L (e.g., StartSymbol and length) determined according to the value m of a specific field (e.g., TDRA field) in the DCI for PUSCH. Also, the UE can determine a specific time slot based on the Ks information determined according to the value m of a specific field (e.g., TDRA field) in the DCI.

[0049] The UE can also dynamically receive information indicating the repetition factor K (e.g., numberofrepetitions) through downlink control information. The repetition factor can also be determined according to 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 by DCI, the repetition factor K, the start symbol S, and the number of symbols L can also be supported.

[0050] Figure 1A The shown slot-based retransmission can also be referred to as retransmission type A (e.g., PUSCH retransmission type A (PUSCH repetition Type A)). Figure 1B The shown sub-slot-based retransmission can also be referred to as retransmission type B (e.g., PUSCH retransmission type B (PUSCH repetition Type B)).

[0051] The UE can also be set to apply at least one of retransmission type A and retransmission type B. For example, the UE can also be notified by the base station through higher layer signaling (e.g., PUSCHRepTypeIndicator) of the retransmission type to be applied by the UE.

[0052] One of retransmission type A and retransmission type B can also be set for the UE according to each DCI format for scheduling PUSCH.

[0053] For example, for the first DCI format (e.g., DCI format 0_1), when the higher layer signaling (e.g., PUSCHRepTypeIndicator-AorDCIFormat0_1) is set to retransmission type B (e.g., PUSCH-RepTypeB), the UE applies retransmission type B for the PUSCH retransmission 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 retransmission type A for the PUSCH retransmission scheduled by the first DCI format.

[0054] (Invalid symbol pattern)

[0055] It is being studied to notify the UE of information related to symbols (or, symbol patterns) that cannot be used for PUSCH transmission when applying retransmission type B to PUSCH transmission. The symbol pattern that cannot be used for PUSCH transmission can also be referred to as an invalid symbol pattern, Invalid symbol pattern, invalid symbol pattern, etc.

[0056] It is being studied to notify the invalid symbol pattern using at least one of higher layer signaling and DCI. The DCI can also be a specific DCI format (e.g., at least one of DCI format 0_1 and 0_2).

[0057] For example, using a first higher layer parameter, the UE is notified of information related to an invalid symbol pattern that cannot be used for PUSCH transmission. In addition, whether or not the information related to the invalid symbol pattern is applied can also be notified to the UE by means of DCI. In this case, a bit field (a field for notifying the presence or absence of application of the invalid symbol pattern) for indicating whether or not the information related to the invalid symbol pattern is applied may also be set in the DCI.

[0058] In addition, using a second higher layer parameter, the UE can be notified of the presence or absence of setting of a notification field (or an additional bit) in the DCI. That is, when the UE is notified of information related to an invalid symbol pattern by the first higher layer parameter, the UE can also determine whether or not the information related to the invalid symbol pattern is applied based on the second higher layer parameter and the DCI.

[0059] When the first higher layer parameter is not notified or set, the UE can also control the transmission of the PUSCH without considering the invalid symbol pattern. When the first higher layer parameter is notified or set, the UE can also determine whether or not the invalid symbol pattern is applied based on the second higher layer parameter and the DCI. For example, when it is indicated by the second higher layer parameter that an additional bit (or a specific field) for indicating whether or not the invalid symbol pattern is applied is added to the DCI, the UE can also determine whether or not the invalid symbol pattern is applied based on the specific field.

[0060] The first higher layer parameter only needs to notify information about a symbol pattern that becomes invalid for PUSCH transmission. For example, a bitmap form may also be applied (refer to Figure 2A ). Figure 2A FIG. shows an example in the case where an invalid symbol pattern is defined by a bitmap (1-D bitmap) with respect to the time domain. The UE can also determine 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 (refer to Figure 2B ).

[0061] Here, a case where one or a common invalid symbol pattern is applied to multiple BWPs is shown, but different invalid symbol patterns may also be set or applied for each BWP.

[0062] Nominal repetitions / Actual repetitions

[0063] When applying repetition transmission type B and performing repetition transmission in units of sub-slots, due to the repetition factor (K), the data allocation unit, etc., a situation occurs where a certain repetition transmission crosses the slot boundary.

[0064] Figure 3A An example of the case of applying the repetition type B is shown where the repetition factor (K) is 4 and the PUSCH length (L) is 4. In Figure 3A , the PUSCH with k = 3 is configured across the slot boundary. In such a case, the PUSCH can also be divided (or segmented) based on the slot boundary for transmission (refer to Figure 3B ).

[0065] In addition, the case where symbols that cannot be used for PUSCH transmission within a slot (e.g., DL symbols or invalid symbols, etc.) are included is also envisioned. Figure 3A shows the case where a DL symbol (here, a DL symbol), which cannot be used in the PUSCH transmission, is included in a part of the symbols of the PUSCH configured with k = 1. In this case, the PUSCH can also be transmitted using the symbols other than this DL symbol (refer to Figure 3B ).

[0066] In the allocated symbols of a certain PUSCH, when DL symbols (or invalid symbols) are included in the symbols other than the two ends, the PUSCH can also be transmitted using the symbols other than this DL symbol part. In this case, the PUSCH can also be divided (or segmented).

[0067] In Figure 3B , it shows the case where in the sub - slot - based repetition transmission, the PUSCH with k = 1 (Rep#2) is divided into two (Rep#2 - 1 and #2 - 2) by the DL symbol, and the PUSCH with k = 3 (Rep#4) is divided into two (Rep#4 - 1 and #4 - 2) by the slot boundary.

[0068] In addition, the repetition transmission before considering the DL symbol, the invalid symbol, or the slot boundary ( Figure 3A ) can also be called nominal repetitions. The repetition transmission considering the DL symbol, the invalid symbol, or the slot boundary ( Figure 3B ) can also be called actual repetitions.

[0069] (SRS, spatial relation for PUSCH)

[0070] In Rel.15 NR, the UE can also receive the information (SRS configuration information, e.g., parameters in the "SRS - Config" of the RRC control element) used in the transmission of the measurement reference signal (e.g., Sounding Reference Signal (SRS)).

[0071] Specifically, the UE may also receive at least one of information related to one or more SRS resource sets (SRS resource set information, e.g., "SRS-ResourceSet" of RRC control element) and information related to one or more SRS resources (SRS resource information, e.g., "SRS-Resource" of RRC control element).

[0072] An SRS resource set may also be associated with a specific number of SRS resources (a specified number of SRS resources may also be grouped). Each SRS resource may also be determined by an SRS Resource Indicator (SRI) or an SRS resource ID (identifier).

[0073] The SRS resource set information may also include an SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, an SRS resource type (e.g., any one of Periodic SRS, Semi-Persistent SRS, Aperiodic CSI), and information on the usage of the SRS.

[0074] Here, the SRS resource type may also represent any one of Periodic SRS (P-SRS), Semi-Persistent SRS (SP-SRS), and Aperiodic SRS (A-SRS). In addition, the UE may also periodically (or periodically after activation) transmit P-SRS and SP-SRS, and may also transmit A-SRS based on an SRS request of DCI.

[0075] In addition, the usage (the "usage" of RRC parameters, the "SRS-SetUse" of L1 (Layer-1) parameters) may, for example, also be beam management, codebook (CB), non-codebook (NCB), antenna switching, etc. The SRS for codebook or non-codebook usage may also be used to determine the precoding for codebook-based or non-codebook-based PUSCH transmission based on SRI.

[0076] For example, the UE can also, in the case of transmission based on a codebook, determine the precoding for PUSCH transmission according to the SRI, the Transmitted Rank Indicator (TRI), and the Transmitted Precoding Matrix Indicator (TPMI). The UE can also, in the case of transmission not based on a codebook, determine the precoder for PUSCH transmission according to the SRI.

[0077] The SRS resource information can also include the SRS-ResourceId, the number of SRS ports, the SRS port serial number, the transmission Comb, the SRS resource mapping (e.g., time and / or frequency resource location, resource offset, period of the resource, number of repetitions, number of SRS symbols, SRS bandwidth, etc.), hopping correlation information, the SRS resource type, the sequence ID, the spatial relation information of the SRS, etc.

[0078] The spatial relation information of the SRS (e.g., the "spatialRelationInfo" of the RRC information element) can also represent the spatial relation information between a specific reference signal and the SRS. The specific reference signal can 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., another SRS). The SS / PBCH block can also be referred to as a synchronization signal block (SSB).

[0079] As the index of the above specific reference signal, the spatial relation information of the SRS can also include at least one of the SSB index, the CSI-RS resource ID, and the SRS resource ID.

[0080] In addition, in the present disclosure, the SSB index, the SSB resource ID, and the SSB Resource Indicator (SSBRI) can also be replaced with each other. In addition, the CSI-RS index, the CSI-RS resource ID, and the CSI-RS Resource Indicator (CRI) can also be replaced with each other. Furthermore, the SRS index, the SRS resource ID, and the SRI can also be replaced with each other.

[0081] The spatial relation information of the SRS may also include the serving cell index, BWP index (BWP ID), etc. corresponding to the above-mentioned specific reference signals.

[0082] In the case where for a certain SRS resource, an SSB or CSI-RS and the spatial relation information related to the SRS are set, 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 the reception of 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.

[0083] In the case where for a certain SRS (target SRS) resource, the spatial relation information related to another SRS (reference SRS) and the SRS (target SRS) is set, the UE may also use the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter (spatial domain transmit filter) used for the transmission of the reference SRS to transmit the target SRS resource. That is, in this case, the UE may also assume that the UE transmit beam of the reference SRS and the UE transmit beam of the target SRS are the same.

[0084] The UE may also determine the spatial relation of the PUSCH scheduled by the DCI according to the value of a specific field (for example, SRS resource identifier (SRI) field) in the DCI (for example, DCI format 0_1). Specifically, the UE may also use the spatial relation information (for example, "spatialRelationInfo" of the RRC information element) of the SRS resource determined based on the value of the specific field (for example, SRI) for PUSCH transmission.

[0085] In the case where the PUSCH uses codebook-based transmission, the UE may also set 2 SRS resources through RRC and indicate 1 of the 2 SRS resources through the DCI (1-bit SRI field). In the case where the PUSCH uses non-codebook-based transmission, the UE may also be set 4 SRS resources through RRC and indicate 1 of the 4 SRS resources through the DCI (2-bit SRI field).

[0086] <Multi-TRP>

[0087] In NR, it is being studied that one or more transmission / reception points (TRPs) (multi-TRP) use one or more panels (multi-panel) to perform DL transmission to the UE. In addition, it is being studied that the UE performs UL transmission to one or more TRPs (refer to Figure 4 ).

[0088] Multiple TRPs can correspond to the same cell identifier (cell Identifier (ID)), or can correspond to different cell IDs. The cell ID can be either a physical cell ID or a virtual cell ID.

[0089] However, in the NR specifications to date, how to control the repeated transmission of PUSCH in multi-panel / TRP has not been fully studied. If the repeated transmission of PUSCH in multi-TRP is not properly performed, there is a concern about throughput reduction or communication quality degradation.

[0090] Therefore, the inventors of the present invention have studied the control of PUSCH repeated transmission in multi-TRP and come up with the present embodiment.

[0091] Hereinafter, with reference to the drawings, embodiments related to the present disclosure will be described in detail. The wireless communication methods related to the respective embodiments can be applied separately or in combination.

[0092] In addition, in the present disclosure, a panel, an uplink (UL) transmission entity, a TRP, a spatial relationship, a control resource set (COntrol REsource SET (CORESET)), a PDSCH, a codeword, a base station, a specific antenna port (e.g., a demodulation reference signal (DeModulation Reference Signal (DMRS)) port), a specific antenna port group (e.g., a DMRS port group), a specific group (e.g., a code division multiplexing (Code Division Multiplexing (CDM)) group, a specific reference signal group, a CORESET group), a CORESET pool can also be mutually replaced. In addition, a panel identifier (Identifier (ID)) and a panel can also be mutually replaced. A TRP ID and a TRP can also be mutually replaced.

[0093] In the present disclosure, an index, an ID, an indicator, a resource ID can also be mutually replaced.

[0094] In the present disclosure, "A / B" can also mean "at least one of A and B".

[0095] In the present disclosure, a list, a group, a cluster, a subset, etc. can also be mutually replaced. In the present disclosure, spatial relationship information, an SRI, an SRS resource, a precoder, etc. can also be mutually replaced.

[0096] In the present disclosure, DCI format 0_0, DCI not including SRI, DCI not including an indication of spatial relation, and DCI not including CIF may also be mutually replaceable. In the present disclosure, DCI format 0_1, DCI including SRI, DCI including an indication of spatial relation, and DCI including CIF may also be mutually replaceable.

[0097] (First mode)

[0098] An example of communication control in the case of applying repeated transmission (repeated transmission type A) of PUSCH based on a time slot to a UE communicating using one or more TRPs will be described in the first mode.

[0099] The UE receives information related to the transmission condition of PUSCH from a network (e.g., a base station). The information related to the transmission condition of PUSCH may also be at least one of information related to the repeated transmission type of PUSCH, information related to the repetition coefficient, information related to the allocation of PUSCH, information related to the spatial relation (or precoder) used in PUSCH transmission, information related to the redundancy version used in PUSCH transmission, and information related to the time slot format.

[0100] The information related to the transmission condition of PUSCH may also be notified from the base station to the UE through at least one of downlink control information and high-layer signaling.

[0101] The information related to the repeated transmission type of PUSCH may also be notified or set to the UE through high-layer signaling. For example, the UE may apply repeated transmission type A when the repeated transmission type B (e.g., PUSCH-RepTypeB) is not set through high-layer signaling. The repeated transmission type may also be set for each DCI format (or type of PUSCH). The type of PUSCH may also include PUSCH based on dynamic grant and PUSCH based on configured grant.

[0102] The information related to the repetition coefficient, the information related to the allocation of PUSCH, the information related to the spatial relation (or precoder) used in PUSCH transmission, and the information related to the redundancy version used in PUSCH transmission may also be notified to the UE through DCI or a combination of DCI and high-layer parameters.

[0103] For the information related to the repetition coefficient (e.g., K) and the information related to the allocation of PUSCH (e.g., start symbol S and PUSCH length L), multiple candidates may also be defined in a table, and a specific candidate may be selected through DCI. In the following description, an example in which the repetition coefficient (K) of PUSCH is 4 will be described, but the applicable repetition coefficient is not limited to 4.

[0104] Information related to spatial relationships (hereinafter also referred to as spatial relationship information) can also have multiple candidates set through high-layer signaling, and one or more spatial relationship information can be activated through at least one of DCI and MAC CE.

[0105] In the case where the repetition factor is 4 (K = 4), the UE can also perform control so that transmission blocks (or PUSCH) are transmitted using 4 transmission occasions (for example, transmission occasion) (refer to Figure 5 ). Each PUSCH can also be assigned to a transmission occasion set for different time slots (for example, consecutive time slots).

[0106] Each transmission occasion (or each PUSCH repetition) can also be associated with a spatial relationship respectively. In this case, the same spatial relationship information can also be set for multiple transmission occasions. For example, when the UE is notified of one spatial relationship information by at least one of DCI and the high layer from the base station, the UE can also apply the one spatial relationship information to each PUSCH repetition.

[0107] Alternatively, different spatial relationship information can also be set for multiple transmission occasions. For example, when the UE is notified of multiple spatial relationship information by at least one of DCI and the high layer from the base station, the UE can also apply different spatial relationship information to each PUSCH repetition.

[0108] Each transmission occasion (or each PUSCH repetition) can also be associated with a redundancy version (RV) respectively. In this case, the same RV can also be set for multiple transmission occasions. For example, when the UE is notified of one RV by at least one of DCI and the high layer from the base station, the UE can also apply the one RV to each PUSCH repetition. When there are multiple RVs notified from the base station, the UE can also apply a specific RV to each PUSCH repetition.

[0109] Alternatively, different RVs can also be set for multiple transmission occasions. For example, when the UE is notified of multiple RVs (for example, an RV set) by at least one of DCI and the high layer from the base station, the UE can also apply different spatial relationship information to each PUSCH repetition.

[0110] A common modulation / coding scheme (Modulation and Coding Scheme (MCS)) can also be applied to all transmission occasions (or PUSCH repetitions) set over K time slots. In addition, the MCS can also be associated with the same single or multiple DMRS ports. For example, in Figure 5Among them, the UE can also apply the same MCS to the repeated transmissions #1 to #4 of the PUSCH. Alternatively, different MCSs can also be applied at multiple transmission opportunities. In this case, the spatial relation information and the MCS can also be associated.

[0111] Each repeated transmission of the PUSCH can also correspond to a specific TRP. As shown in Figure 5 There is a case where the repetitions (Rep#1, #3) of the PUSCH with k = 0, 2 correspond to TRP#1, and the repetitions (Rep#2, #4) of the PUSCH with k = 1, 3 correspond to TRP#2. In addition, the TRP corresponding to each PUSCH repetition is not limited to this.

[0112] In addition, the TRP and the spatial relation information can also be associated. For example, when each repeated transmission of the PUSCH is sent to a different TRP, different spatial relation information can also be applied in each repeated transmission of the PUSCH. The UE can also determine the spatial relation information to be applied in each repeated transmission of the PUSCH according to a specific rule when multiple spatial relation information is set.

[0113] <Application Order of Spatial Relation Information>

[0114] As described above, when there are multiple numbers (e.g., R) of spatial relation information set for the UE, the UE can also apply different spatial relation information to multiple repeated transmissions (or transmission opportunities) of the PUSCH. When there are multiple numbers of spatial relation information, the UE can also apply at least one of the first mapping (e.g., cyclic mapping) and the second mapping (e.g., sequential mapping) to K repeated transmissions.

[0115] [First Mapping]

[0116] For the repeated transmissions of the PUSCH (e.g., Rep#1 to #4), multiple spatial relation information can be cyclically mapped. For example, when R spatial relation information is set, the 1st to Rth spatial relation information can also be respectively applied to the 1st to Rth repeated transmissions of the PUSCH. When the number (R) of spatial relation information is less than the repetition factor (K), for the remaining repeated transmissions of the PUSCH, the same spatial relation information (again 1 to R) can be cyclically mapped.

[0117] Figure 6AAn example of a case where the first mapping is used in PUSCH repeated transmission is shown. Here, a case where two spatial relation information (R = 2) is set for the UE and the repetition factor is 4 (K = 4) is shown. In addition, here, a case where spatial relation information #1 and spatial relation information #2 are set as the two spatial relation information is shown, but the indexes of the set spatial relation information may not be consecutive numbers.

[0118] In Figure 6A , spatial relation information #1 is mapped to Rep#1 (k = 0), and spatial relation information #2 is mapped to Rep#2 (k = 2). In addition, since R < K, spatial relation information #1 is mapped to the remaining Rep#3 (k = 2), and spatial relation information #2 is mapped to Rep#4 (k = 3).

[0119] In this way, by mapping the PUSCH repeated transmission in a manner of cycling multiple spatial relation information, even when the communication condition in a part of the time domain deteriorates, the PUSCH can be appropriately transmitted to each TRP.

[0120] [Second Mapping]

[0121] For the PUSCH repetition (e.g., Rep#1 to #4), multiple spatial relation information may also be mapped sequentially. For example, when R spatial relation information is set, the r-th (r = 1,..., R - 1) spatial relation information may be applied to the [(r - 1)K / R + 1]-th to the (rK / R)-th PUSCH repeated transmission, and the R-th spatial relation information may be applied to the [(R - 1)K / R + 1]-th to the K-th PUSCH repeated transmission.

[0122] Figure 6B An example of a case where the second mapping is used in PUSCH repeated transmission is shown. Here, a case where two spatial relation information (R = 2) is set for the UE and the repetition factor is 4 (K = 4) is shown. In addition, here, a case where spatial relation information #1 and spatial relation information #2 are set as the two spatial relation information is shown, but the indexes of the set spatial relation information may not be consecutive numbers.

[0123] In Figure 6B , spatial relation information #1 is mapped to Rep#1 (k = 0) and Rep#2 (k = 1), and spatial relation information #2 is mapped to Rep#3 (k = 2) and Rep#4 (k = 3).

[0124] In this way, by mapping the PUSCH repeated transmission in a manner where each spatial relation information is consecutive, an increase in the number of UL beam (or, spatial domain filter) switches in the UE can be suppressed.

[0125] Regarding which of the first mapping and the second mapping the UE applies, it can be predefined in the specification, or the UE can be notified by the base station using at least one of high-layer signaling and DCI. By switching between applying the first mapping and the second mapping, the repeated transmission of the PUSCH can be flexibly controlled according to the communication environment.

[0126] (Second method)

[0127] In the second method, an example of communication control in the case where the UE communicating using one or more TRPs applies repeated transmission of the PUSCH based on sub-slots (repeated transmission type B) will be described.

[0128] For example, the UE can also apply repeated transmission type B when it is set to repeated transmission type B (e.g., PUSCH-RepTypeB) by high-layer signaling.

[0129] In the following description, an example where the repetition factor (K) of the PUSCH is 4 will be given for illustration, but the applicable repetition factor is not limited to 4.

[0130] The UE receives information related to the transmission conditions of the PUSCH from the network (e.g., the base station). The information related to the transmission conditions of the PUSCH can also be at least one of information related to the repeated transmission type of the PUSCH, information related to the repetition factor, information related to the allocation of the PUSCH, information related to the spatial relationship (or precoder) used in the PUSCH transmission, information related to the redundancy version used in the PUSCH transmission, information related to the slot format, and information related to the null symbol pattern.

[0131] The information related to the transmission conditions of the PUSCH can also be notified to the UE by the base station using at least one of downlink control information and high-layer signaling.

[0132] The information related to the repeated transmission type of the PUSCH can also be notified or set to the UE by high-layer signaling. For example, the UE can also apply repeated transmission type B when it is set to repeated transmission type B (e.g., PUSCH-RepTypeB) by high-layer signaling. The repeated transmission type can also be set for each DCI format (or type of PUSCH).

[0133] The information related to the repetition factor, the information related to the allocation of the PUSCH, the information related to the spatial relationship (or precoder) used in the PUSCH transmission, and the information related to the redundancy version used in the PUSCH transmission can also be notified to the UE by DCI, or a combination of DCI and high-layer parameters.

[0134] For information related to the repetition factor (e.g., K), information related to the allocation of PUSCH (e.g., start symbol S and PUSCH length L), multiple candidates can also be defined in a table, and a specific candidate is selected through DCI. In the following description, an example of the case where the repetition factor of PUSCH (K) is 4 is given for illustration, but the applicable repetition factor is not limited to 4.

[0135] Multiple candidates for spatial relation information can also be set through higher layer signaling, and one or more spatial relation information is activated through at least one of DCI and MAC CE.

[0136] The UE can also determine at least one of nominal repetitions and actual repetitions based on information related to the time slot format and information related to the null symbol pattern, etc. For example, the UE can also consider at least one of DL symbols, null symbols, and time slot boundaries to judge the segmentation (or segmentation) of each PUSCH repetition.

[0137] In the case where the repetition factor is 4 (K = 4), the UE controls to transmit the transport block (or PUSCH) using 4 transmission occasions (e.g., transmission occasion) (refer to Figure 7A , Figure 7B ). Figure 7A The PUSCH repetition transmission representing nominal repetitions, Figure 7B The PUSCH repetition transmission representing actual repetitions.

[0138] In Figure 7A , a case is shown where a part of Rep#1 to Rep#3 and Rep#4 is set in the same time slot, and the remaining part of Rep#4 is set in a different time slot. In addition, a case is shown where a part of the symbols of Rpe#2 becomes DL or null symbols. In Figure 7B , a case is shown where the PUSCH of k = 1 (Rep#2) is divided into 2 (Rep#2-1 and #2-2) by DL symbols, and the PUSCH of k = 3 (Rep#4) is divided into 2 (Rep#4-1 and #4-2) by the time slot boundary. In Figure 7B , the transmission occasion can also be set for each divided PUSCH (e.g., segmented PUSCH).

[0139] Each transmission occasion (or each PUSCH repetition) may also be associated with a spatial relation information respectively. In this case, the same spatial relation information may also be set for multiple transmission occasions. For example, when the UE is notified of a spatial relation information by at least one of DCI and higher layer from the base station, the UE may also apply the one spatial relation information to each PUSCH repetition.

[0140] Alternatively, different spatial relation information may be set for multiple transmission occasions. For example, when the UE is notified of multiple spatial relation information by at least one of DCI and higher layer from the base station, the UE may also apply different spatial relation information to each PUSCH repetition.

[0141] Each transmission occasion (or each PUSCH repetition) may also be associated with a redundancy version (RV) respectively. In this case, the same RV may also be set for multiple transmission occasions. For example, when the UE is notified of an RV by at least one of DCI and higher layer from the base station, the UE may also apply the one RV to each PUSCH repetition. When there are multiple RVs notified from the base station, the UE may also apply a specific RV to each repetition of the PUSCH.

[0142] Alternatively, different RVs may be set for multiple transmission occasions. For example, when the UE is notified of multiple RVs (e.g., an RV set) by at least one of DCI and higher layer from the base station, the UE may also apply different spatial relation information to each PUSCH repetition.

[0143] All the transmission occasions (or PUSCH repetitions) set over K time slots may also apply a common modulation / coding scheme (Modulation and Coding Scheme (MCS)). In addition, the MCS may also be associated with the same single or multiple DMRS ports. Alternatively, different MCSs may be applied to multiple transmission occasions. In this case, the spatial relation information and the MCS may also be associated.

[0144] At least one of the spatial relation information, the redundancy version, and the MCS may also be applied to each of the PUSCH repetition transmissions (Rep#1, #2, #3, #4) of the nominal repetition. Alternatively, at least one of the spatial relation information, the redundancy version, and the MCS may also be applied to each of the PUSCH repetition transmissions (Rep#1, #2-1, #2-2, #3, #4-1, #4-2) of the actual repetition.

[0145] Each PUSCH repetition transmission may also correspond to a specific TRP. In Figure 7AIn this case, it shows the situation where Rep#1 and #3 correspond to TRP#1, and Rep#2 and #4 correspond to TRP#2. In Figure 7B it shows the situation where Rep#1, #2-2, and #4-1 correspond to TRP#1, and Rep#2-1, #3, and #4-2 correspond to TRP#2. Additionally, the TRP corresponding to each PUSCH repetition is not limited to this.

[0146] In addition, the TRP and spatial relation information can also be associated. For example, when each PUSCH repetition is sent to different TRPs, different spatial relation information can also be applied in each PUSCH repetition. When the UE is set with multiple spatial relation information, it can also determine the spatial relation information applied in each PUSCH repetition according to specific rules.

[0147] <Application Order of Spatial Relation Information>

[0148] As described above, when there are multiple numbers (e.g., R) of spatial relation information set for the UE, the UE can also apply different spatial relation information to multiple PUSCH repetitions (or, transmission opportunities). When there are multiple numbers of spatial relation information, the UE can also apply at least one of the first mapping (e.g., cyclic mapping) and the second mapping (e.g., sequential mapping) to K repetitions.

[0149] [First Mapping]

[0150] For PUSCH repetitions, multiple spatial relation information can be mapped cyclically. For example, when R spatial relation information is set, the 1st to Rth spatial relation information can also be applied to the 1st to Rth PUSCH repetitions respectively. When the number (R) of spatial relation information is less than the repetition coefficient (K), for the remaining PUSCH repetitions, the same spatial relation information (again 1 to R) can be mapped cyclically.

[0151] The first mapping can also be applied to each of the PUSCH repetitions (Rep#1, #2, #3, #4) of the nominal repetition (refer to Figure 8A ). Or, the spatial relation information can also be applied to each of the PUSCH repetitions (Rep#1, #2-1, #2-2, #3, #4-1, #4-2) of the actual repetition (refer to Figure 8B ).

[0152] Figure 8AAn example is shown in the case where the first mapping is used in the PUSCH transmission based on nominal repetitions. Here, a case is shown where two spatial relation information are set for the UE (R = 2) and the repetition factor is 4 (K = 4). In addition, here, a case is shown where spatial relation information #1 and spatial relation information #2 are set as the two spatial relation information, but the indices of the set spatial relation information may not be consecutive numbers.

[0153] In Figure 8A , spatial relation information #1 is mapped to Rep#1, and spatial relation information #2 is mapped to Rep#2-1 and #2-2 included in Rep#2. In addition, since R < K, spatial relation information #1 is used to map the remaining Rep#3, and spatial relation information #2 is mapped to Rep#4-1 and #4-2 included in Rep#4.

[0154] Figure 8B An example is shown in the case where the first mapping is used in the PUSCH transmission based on actual repetitions. Here, a case is shown where two spatial relation information are set for the UE (R = 2) and the repetition factor is 6 (K = 6). In addition, when the repetition factor notified from the base station to the UE is 4, the UE can also control the transmission by changing K notified from the base station according to the segmented PUSCH. Here, since the PUSCH repetitions are segmented into two, K (K = 4 + 2) can also be changed based on the number of segments and applied.

[0155] In Figure 8B , spatial relation information #1 is mapped to Rep#1, and spatial relation information #2 is mapped to Rep#2-1. In addition, since R < K, spatial relation information #1 is mapped to the remaining Rep#2-2, spatial relation information #2 is mapped to Rep#3, spatial relation information #1 is mapped to Rep#4-1, and spatial relation information #2 is mapped to Rep#4-2.

[0156] In this way, the PUSCH transmission is mapped in a manner that circulates multiple spatial relation information, enabling appropriate PUSCH transmission to each TRP even when the communication condition deteriorates in a part of the time domain.

[0157] [Second Mapping]

[0158] For PUSCH repetitions, multiple spatial relation information can also be mapped sequentially. For example, when R spatial relation information are set, the r-th (r = 1,..., R - 1) spatial relation information is applied to the [(r - 1)K / R + 1]-th to the (rK / R)-th PUSCH transmissions, and the R-th spatial relation information is applied to the [(R - 1)K / R + 1]-th to the K-th PUSCH transmissions.

[0159] The second mapping can also be applied to each of the nominal repeated PUSCH transmissions (Rep#1, #2, #3, #4) (refer to Figure 9A ). Alternatively, the spatial relation information can also be applied to each of the actual repeated PUSCH transmissions (Rep#1, #2-1, #2-2, #3, #4-1, #4-2) (refer to Figure 9B ).

[0160] Figure 9A An example of a case where the second mapping is utilized in the nominal repeated PUSCH transmission is shown. Here, a case where 2 pieces of spatial relation information (R = 2) are set for the UE and the repetition factor is 4 (K = 4) is shown. Additionally, here, a case where spatial relation information #1 and spatial relation information #2 are set as the 2 pieces of spatial relation information is shown, but the indices of the set spatial relation information may not be consecutive numbers.

[0161] In Figure 9A , for Rep#2-1 and #2-2 included in Rep#1 and Rep#2, spatial relation information #1 is mapped, and for Rep#4-1 and #4-2 included in Rep#3 and Rep#4, spatial relation information #2 is mapped.

[0162] Figure 9B An example of a case where the second mapping is utilized in the actual repeated PUSCH transmission is shown. Here, a case where 2 pieces of spatial relation information (R = 2) are set for the UE and the repetition factor is 6 (K = 6) is shown. Additionally, here, a case where spatial relation information #1 and spatial relation information #2 are set as the 2 pieces of spatial relation information is shown, but the indices of the set spatial relation information may not be consecutive numbers.

[0163] In Figure 9B , for the first 3 transmissions (Rep#1, Rep#2-1, #2-2), spatial relation information #1 is mapped, and for the remaining 3 transmissions (Rep#3, Rep#4-1, #4-2), spatial relation information #2 is mapped.

[0164] In this way, by mapping the PUSCH transmissions in a manner where each piece of spatial relation information is consecutive, an increase in the number of UL beam (or, spatial domain filter) switches in the UE can be suppressed.

[0165] Regarding which of the first mapping and the second mapping is applied to the UE, it can either be predefined in the specification or notified from the base station to the UE using at least one of the high-layer signaling and DCI. By switching between applying the first mapping and the second mapping, the repeated transmission of the PUSCH can be flexibly controlled according to the communication environment.

[0166] (Wireless communication system)

[0167] Hereinafter, the structure of the wireless communication system according to one embodiment of the present disclosure will be described. In this wireless communication system, any one of the wireless communication methods according to the above-described embodiments of the present disclosure or a combination thereof is used for communication.

[0168] Figure 10 FIG. is an example showing a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 may also be a system that realizes communication by using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the 5th generation mobile communication system New Radio (5G NR), or the like.

[0169] In addition, the wireless communication system 1 may also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple Radio Access Technologies (RATs). MR-DC may also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0170] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the Master Node (MN), and the base station (gNB) of NR is the 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.

[0171] The wireless communication system 1 may also support dual connectivity between multiple base stations within the same RAT (e.g., dual connectivity of the MN and the SN, both of which are base stations (gNBs) of NR (NR-NR Dual Connectivity (NN-DC), NR-NR dual connectivity)).

[0172] The wireless communication system 1 may also include: a base station 11 that forms a macro cell C1 with a relatively wide coverage area, and a base station 12 (12a - 12c) that is disposed within the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located within at least one cell. The configuration, number, etc. of each cell and the user terminal 20 are not limited to the manner shown in the figure. Hereinafter, without distinguishing between the base stations 11 and 12, they are collectively referred to as the base station 10.

[0173] The user terminal 20 may also be connected to at least one of the multiple base stations 10. The user terminal 20 may also utilize at least one of carrier aggregation (CA) and dual connectivity (DC) that uses multiple component carriers (CCs).

[0174] Each CC may also be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell 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 of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Additionally, the frequency bands, definitions, etc. of FR1 and FR2 are not limited thereto. For example, FR1 may correspond to a frequency band higher than FR2.

[0175] Furthermore, the user terminal 20 may also communicate in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0176] Multiple base stations 10 can also be connected via wired (e.g., optical fibers based on the Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication is utilized as a backhaul between base stations 11 and 12, the base station 11 equivalent to the upper-level station can also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to the relay station can also be referred to as an IAB node.

[0177] The base station 10 can also be connected to the core network 30 via other base stations 10 or directly. The core network 30 can also include at least one of, for example, an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), etc.

[0178] The user terminal 20 can also be a terminal that supports at least one of communication methods such as LTE, LTE-A, 5G, etc.

[0179] In the wireless communication system 1, a wireless access method based on Orthogonal Frequency Division Multiplexing (OFDM) can also be utilized. 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. can also be utilized.

[0180] The wireless access method can also be referred to as a waveform. Additionally, in the wireless communication system 1, other wireless access methods (e.g., other single-carrier transmission methods, other multi-carrier transmission methods) can also be applied in the wireless access methods of the UL and DL.

[0181] In the wireless communication system 1, as a downlink channel, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc., which are shared by each user terminal 20, can also be used.

[0182] In addition, in the wireless communication system 1, as an uplink channel, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc., which are shared by each user terminal 20, can also be used.

[0183] User data, high-layer control information, System Information Block (SIB), etc. are transmitted through the PDSCH. User data, high-layer control information, etc. can also be transmitted through the PUSCH. In addition, the Master Information Block (MIB) can be transmitted through the PBCH.

[0184] Low-layer control information can also be transmitted through the PDCCH. The low-layer control information can also include, for example, downlink control information (Downlink Control Information (DCI)), and the downlink control information includes scheduling information of at least one of the PDSCH and the PUSCH.

[0185] In addition, the DCI that schedules the PDSCH can also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules the PUSCH can also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH can also be interpreted as DL data, and the PUSCH can also be interpreted as UL data.

[0186] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be utilized. The CORESET corresponds to the resource for searching DCI. The search space corresponds to the search area and search method for PDCCH candidates. One CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a certain search space based on the search space configuration.

[0187] One search space can also correspond to PDCCH candidates that match one or more aggregation levels. One or more search spaces can also be referred to as a search space set. Additionally, in the present disclosure, terms such as "search space", "search space set", "search space configuration", "search space set configuration", "CORESET", "CORESET configuration", etc. can be used interchangeably.

[0188] The uplink control information (UCI) containing at least one of channel state information (CSI), delivery confirmation information (e.g., also referred to as Hybrid Automatic Repeat Request (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted via PUCCH. The random access preamble for establishing a connection with the cell can also be transmitted via PRACH.

[0189] Furthermore, in the present disclosure, the downlink, uplink, etc. can also be expressed without "link". In addition, it can also be expressed that "Physical" is not included at the beginning of various channels.

[0190] In the wireless communication system 1, it is also possible to transmit a synchronization signal (SS), a downlink reference signal (DL-RS), etc. In the wireless communication system 1, as the DL-RS, it is also possible to transmit a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc.

[0191] The synchronization signal can also 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) can also be referred to as an SS / PBCH block, an SS block (SS Block (SSB)), etc. In addition, SS, SSB, etc. can also be referred to as reference signals.

[0192] Furthermore, in the wireless communication system 1, as an uplink reference signal (UL-RS), it is also possible to transmit a reference signal for measurement (sounding reference signal (SRS)), a demodulation reference signal (DMRS), etc. In addition, DMRS can also be referred to as a UE-specific reference signal.

[0193] (Base station)

[0194] Figure 11FIG. 0 is a diagram showing an example of the structure of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission path interface (transmission line interface) 140. In addition, one or more of the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140 may be provided respectively.

[0195] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it can also be assumed that the base station 10 also has other functional blocks required for wireless communication. A part of the processing of each unit described below may also be omitted.

[0196] The control unit 110 implements the overall control of the base station 10. The control unit 110 can be composed of a controller, a control circuit, etc. that can be described based on the common knowledge in the technical field related to the present disclosure.

[0197] The control unit 110 may also control the generation, scheduling (e.g., resource allocation, mapping), etc. of signals. The control unit 110 may also control the transmission / reception, measurement, etc. using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequence, etc. to be transmitted as signals, and forward them to the transmission / reception unit 120. The control unit 110 may also perform call processing (setting, releasing, etc.) of communication channels, state management of the base station 10, management of radio resources, etc.

[0198] The transmission / reception unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transmission / reception unit 120 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc. that can be described based on the common knowledge in the technical field related to the present disclosure.

[0199] The transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of the transmission processing unit 1211 and the RF unit 122. The reception unit may be composed of the reception processing unit 1212, the RF unit 122, and the measurement unit 123.

[0200] The transmitting and receiving antenna 130 can be constituted by an antenna that can be described based on common knowledge in the technical field related to the present disclosure, such as an array antenna or the like.

[0201] The transmitting and receiving unit 120 can also transmit the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmitting and receiving unit 120 can also receive the above-mentioned uplink channels, uplink reference signals, etc.

[0202] The transmitting and receiving unit 120 can also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0203] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform processing of the Packet Data Convergence Protocol (PDCP) layer, processing of the Radio Link Control (RLC) layer (e.g., RLC retransmission control), processing of the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0204] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform transmitting processing such as channel coding (which may include error correction coding), modulation, mapping, filtering processing, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, digital-to-analog conversion, etc. on the bit string to be transmitted, and output a baseband signal.

[0205] The transmitting and receiving unit 120 (RF unit 122) can also perform modulation to a radio frequency band, filtering processing, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting and receiving antenna 130.

[0206] On the other hand, the transmitting and receiving unit 120 (RF unit 122) can also perform amplification, filtering processing, demodulation to a baseband signal, etc. on the radio frequency band signal received through the transmitting and receiving antenna 130.

[0207] The transmission / reception unit 120 (reception processing unit 1212) may also perform reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering processing, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing on the obtained baseband signal, and obtain user data and the like.

[0208] The transmission / reception unit 120 (measurement unit 123) may also perform measurements related to the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may also perform measurements on received power (e.g., Reference Signal Received Power (RSRP)), reception quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0209] The transmission path interface 140 may also transmit and receive signals (backhaul signaling) between the device included in the core network 30, other base stations 10, etc., and may also obtain and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0210] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission / reception unit 120 and the transmission / reception antenna 130.

[0211] The transmission / reception unit 120 may also transmit at least one of the spatial relation information of the uplink shared channel and the information related to the repetition factor.

[0212] The control unit 110 can also control the reception of multiple uplink shared channels applying different spatial relation information (e.g., reception processing in each TRP) when setting multiple spatial relation information.

[0213] (User Equipment)

[0214] Figure 12 FIG. is an example showing the structure of a user equipment according to an embodiment. The user equipment 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. In addition, one or more of the control unit 210, the transceiver unit 220, and the transceiver antenna 230 may be provided respectively.

[0215] In addition, in this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and it can be assumed that the user equipment 20 also has other functional blocks required for wireless communication. A part of the processing of each unit described below may also be omitted.

[0216] The control unit 210 implements the overall control of the user equipment 20. The control unit 210 can be composed of a controller, a control circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0217] The control unit 210 can also control the generation, mapping, etc. of signals. The control unit 210 can also control the transmission / reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 can also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transceiver unit 220.

[0218] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0219] The transceiver unit 220 may be configured as an integrated transceiver unit, or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of the transmission processing unit 2211 and the RF unit 222. The reception unit may be composed of the reception processing unit 2212, the RF unit 222, and the measurement unit 223.

[0220] The transceiver antenna 230 can be composed of an antenna described based on the common knowledge in the technical field related to the present disclosure, such as an array antenna.

[0221] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channels, uplink reference signals, etc.

[0222] The transmitting and receiving unit 220 may also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc., to form at least one of a transmitting beam and a receiving beam.

[0223] The transmitting and receiving unit 220 (transmission processing unit 2211) may also perform, for example, PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc., on the data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0224] The transmitting and receiving unit 220 (transmission processing unit 2211) may also perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering processing, DFT processing (if necessary), IFFT processing, precoding, digital-to-analog conversion, etc., on the bit string to be transmitted, and output a baseband signal.

[0225] In addition, regarding whether to apply DFT processing, it may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when the transform precoding is active (enabled), the transmitting and receiving unit 220 (transmission processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using the DFT-s-OFDM waveform. In the case where this is not the case, the transmitting and receiving unit 220 (transmission processing unit 2211) may not perform DFT processing as the above-mentioned transmission processing.

[0226] The transmitting and receiving unit 220 (RF unit 222) may also perform modulation to the radio frequency band, filtering processing, amplification, etc., on the baseband signal, and transmit the radio frequency band signal via the transmitting and receiving antenna 230.

[0227] On the other hand, the transmitting and receiving unit 220 (RF unit 222) may also perform amplification, filtering processing, demodulation to the baseband signal, etc., on the radio frequency band signal received through the transmitting and receiving antenna 230.

[0228] The transmitting and receiving unit 220 (reception processing unit 2212) may also perform reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering processing, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, etc., on the obtained baseband signal, and obtain user data, etc.

[0229] The transmitting and receiving unit 220 (measurement unit 223) may also perform measurements related to the received signal. For example, the measurement unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may also perform measurements on 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.

[0230] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be constituted by at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230.

[0231] In addition, the control unit 210 may also use at least one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, and Downlink Control Information (DCI) to determine the spatial relation information for the Physical Uplink Shared Channel (PUSCH) of multiple transmit-receive points.

[0232] The transmitting and receiving unit 220 may also receive at least one of the spatial relation information of the uplink shared channel and the information related to the repetition factor. In addition, in the present disclosure, the spatial relation information and the spatial relation may be interchangeable.

[0233] The control unit 210 may also perform control when multiple pieces of spatial relation information are set, so that different spatial relation information is applied to the multiple uplink shared channels that are repeatedly transmitted.

[0234] For example, the control unit 210 may also apply (cyclic mapping) by cycling the different spatial relation information for the multiple uplink shared channels. Or, the control unit 210 may also apply the same spatial relation information (sequential mapping) to at least a part of the continuously transmitted uplink shared channels among the multiple uplink shared channels.

[0235] In addition, the control unit 210 may also perform control when the uplink shared channel is repeatedly transmitted in a unit shorter than a time slot, so that the spatial relation information is applied to each uplink shared channel transmission that is divided by a symbol or a time slot boundary that cannot be utilized for the transmission of the uplink shared channel.

[0236] (Hardware Structure)

[0237] In addition, the block diagrams used in the description of the above embodiments illustrate blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. Furthermore, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented by a single device physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly (e.g., by wire, wireless, etc.) connected and implemented by these multiple devices. A functional block can also be implemented by combining the above single device or the above multiple devices with software.

[0238] Here, in terms of functions, there are judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, election, establishment, comparison, assumption, expectation, regarded as, 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 the transmission 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.

[0239] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure can also function as a computer that processes the wireless communication method of the present disclosure. Figure 13 FIG. is an example of the hardware structure of a base station and a user terminal according to an embodiment. The above base station 10 and user terminal 20 can also be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0240] In addition, in the present disclosure, terms such as device, circuit, equipment, section, unit, etc. can be replaced with each other. The hardware structure of the base station 10 and the user terminal 20 can be configured to include one or more of each device shown in the figure, or can be configured not to include some devices.

[0241] For example, only one processor 1001 is illustrated, 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 by other means. Further, the processor 1001 may also be implemented by one or more chips.

[0242] Regarding each function in the base station 10 and the user terminal 20, for example, by reading a specific software (program) into hardware such as the processor 1001 and the memory 1002, the processor 1001 performs operations and controls communication via the communication device 1004, or controls at least one of reading and writing data in the memory 1002 and the storage device 1003, thereby implementing the functions.

[0243] The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may also be constituted by a central processing unit (Central Processing Unit (CPU)) including an interface with peripheral devices, a control device, an arithmetic device, registers, etc. For example, at least a part of the above control unit 110 (210), transmission / reception unit 120 (220), etc. may also be implemented by the processor 1001.

[0244] In addition, the processor 1001 reads a program (program code), software module, data, etc. from at least one of the storage device 1003 and the communication device 1004 into the memory 1002, and performs various processes based on them. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiments can be used. For example, the control unit 110 (210) may also be implemented by a control program stored in the memory 1002 and operating in the processor 1001, and the same applies to other functional blocks.

[0245] The memory 1002 may also be a computer-readable recording medium, for example, constituted by at least one of a read-only memory (Read Only Memory (ROM)), an erasable programmable read-only memory (Erasable Programmable ROM (EPROM)), an electrically erasable programmable read-only memory (Electrically EPROM (EEPROM)), a random access memory (Random Access Memory (RAM)), and 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 a program (program code), software module, etc. executable for implementing the wireless communication method according to an embodiment of the present disclosure.

[0246] The storage device 1003 can also be a computer-readable recording medium, which is constituted by at least one of, for example, a flexible disc, a floppy (registered trademark) disc, an optical disc (such as a compact disc (Compact Disc ROM (CD-ROM)), etc.), a digital versatile disc, a Blu-ray (registered trademark) disc, a removable disc, 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, and other appropriate storage media. The storage device 1003 can also be referred to as an auxiliary storage device.

[0247] The communication device 1004 is hardware (a transmitting and receiving device) for performing inter-computer communication via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. In order to implement at least one of, for example, Frequency Division Duplex (FDD) and 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), transmitting and receiving antenna 130 (230), etc. can also be implemented by the communication device 1004. The transmitting and receiving unit 120 (220) can also be physically or logically separately installed by a transmitting unit 120a (220a) and a receiving unit 120b (220b).

[0248] The input device 1005 is an input device (such as a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) for receiving an input from the outside. The output device 1006 is an output device (such as a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) for performing an output to the outside. In addition, the input device 1005 and the output device 1006 can also be of an integrated structure (such as a touch panel).

[0249] In addition, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 can be constituted by a single bus or by different buses between each device.

[0250] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA). Part or all of the functional blocks may also be implemented using such hardware. For example, the processor 1001 may also be implemented using at least one of these hardware components.

[0251] (Variant example)

[0252] Furthermore, the terms described in this disclosure and the terms necessary for understanding this disclosure may also be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal can also be abbreviated as RS and may also be referred to as a pilot, a pilot signal, etc. according to the applied standard. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0253] A radio frame may also be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio 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) independent of the numerology.

[0254] Here, the numerology may also refer to communication parameters applied in at least one of the transmission and reception of a certain signal or channel. For example, the numerology may also represent at least one of a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transmitter-receiver in the frequency domain, and a specific windowing process performed by a transmitter-receiver in the time domain.

[0255] A time slot can also be composed of one or more symbols (such as 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 can also be a time unit based on a parameter set.

[0256] A time slot can also contain multiple mini-slots. Each mini-slot can also be composed of one or more symbols in the time domain. In addition, a mini-slot can also be referred to as a sub-slot. A mini-slot can also be composed of a smaller number of symbols than a time slot. The Physical Downlink Shared Channel (PDSCH) (or Physical Uplink Shared Channel (PUSCH)) transmitted in a time unit larger than a mini-slot can also be referred to as PDSCH (PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using a mini-slot can also be referred to as PDSCH (PUSCH) mapping type B.

[0257] A radio frame, a sub-frame, a time slot, a mini-slot, and a symbol all represent time units when transmitting a signal. A radio frame, a sub-frame, a time slot, a mini-slot, and a symbol can also use their respective other names. In addition, the time units such as frames, sub-frames, time slots, mini-slots, and symbols in this disclosure can also be replaced with each other.

[0258] For example, a sub-frame can also be referred to as a Transmission Time Interval (TTI), multiple consecutive sub-frames can also be referred to as a TTI, and a time slot or a mini-slot can also be referred to as a TTI. That is to say, at least one of a sub-frame and a TTI can be a sub-frame (1 ms) in the existing Long Term Evolution (LTE), can also be a period shorter than 1 ms (for example, 1 - 13 symbols), and can also be a period longer than 1 ms. In addition, the unit representing a TTI can also not be referred to as a sub-frame, but as a time slot, a mini-slot, etc.

[0259] Here, a TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station schedules the allocation of radio resources (such as the frequency bandwidth and transmission power that can be used in each user terminal) to each user terminal in units of TTI. In addition, the definition of a TTI is not limited to this.

[0260] A TTI can also be the transmission time unit of a data packet (transmission block), a code block, a codeword, etc. that has undergone channel coding, and can also be the processing unit for scheduling, link adaptation, etc. In addition, when a TTI is given, the actual time interval (such as the number of symbols) for mapping a transmission block, a code block, a codeword, etc. can also be shorter than the TTI.

[0261] In addition, in the case where one time slot or one mini time slot is referred to as a TTI, more than one TTI (i.e., more than one time slot or more than one mini time slot) can also be the minimum time unit for scheduling. In addition, the number of time slots (mini time slots) that constitute the minimum time unit for this scheduling can also be controlled.

[0262] A TTI having a time length of 1 ms can also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than the normal TTI can also be referred to as a shortened TTI, a short TTI, a partial TTI, a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0263] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) can also be interpreted as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) can also be interpreted as a TTI having a TTI length less than that of the long TTI and 1 ms or more.

[0264] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and can also include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers included in the RB can also be determined based on the parameter set.

[0265] In addition, the RB can also include one or more symbols in the time domain, and can be the length of one time slot, one mini time slot, one subframe, or one TTI. One TTI, one subframe, etc. can also be composed of one or more resource blocks respectively.

[0266] In addition, one or more RBs can also be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0267] In addition, a resource block can also be composed of one or more resource elements (REs). For example, one RE can also be a radio resource area of one subcarrier and one symbol.

[0268] A Bandwidth Part (BWP) (which may also be referred to as partial bandwidth, etc.) may also represent a subset of consecutive common RBs (common resource blocks) used for a certain parameter set in a certain carrier. Here, the common RBs can also be determined by the indices of the RBs based on the common reference point of the carrier. PRBs can also be defined in a certain BWP and be numbered additionally within that BWP.

[0269] A BWP may also include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs can also be set within one carrier.

[0270] At least one of the set BWPs can also be active, and the UE may not assume to transmit and receive specific signals / channels outside the active BWP. In addition, "cell", "carrier", etc. in this disclosure can also be interpreted as "BWP".

[0271] In addition, the structures such as the above-mentioned radio frames, subframes, time slots, mini-slots, and symbols are merely 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-slots included in a time slot, the number of symbols and RBs included in a time slot or mini-slot, the number of subcarriers included in an RB, and the number of symbols, symbol length, Cyclic Prefix (CP) length, etc. within a TTI can be changed in various ways.

[0272] Furthermore, the information, parameters, etc. described in this disclosure can be represented by absolute values, relative values with respect to a specific value, or can also be represented by corresponding other information. For example, radio resources can also be indicated by specific indices.

[0273] In this disclosure, the names used for parameters, etc. are not restrictive names in all aspects. In addition, the mathematical formulas, etc. using these parameters can also be different from those explicitly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, so the various names assigned to these various channels and information elements are not restrictive names in all aspects.

[0274] The information, signals, etc. described in this disclosure can also be represented using any one of various different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description can also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0275] In addition, information, signals, etc. can be output to at least one of the higher layer (upper layer) to the lower layer (lower layer) and from the lower layer to the higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0276] The input and output information, signals, etc. can be stored in a specific location (such as a memory), or can be managed using a management table. The input and output information, signals, etc. can be overwritten, updated or appended. The output information, signals, etc. can also be deleted. The input information, signals, etc. can also be sent to other devices.

[0277] The notification of information is not limited to the methods / embodiments described in the present disclosure, and other methods can also be used. For example, the notification of information in the present disclosure can also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), higher 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.

[0278] In addition, physical layer signaling can 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 can also be referred to as an RRC message, and can also be, for example, an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconfiguration (RRC connection re - setting (RRCConnection Reconfiguration)) message, etc. In addition, MAC signaling can be notified, for example, using a MAC control element (MACControl Element (CE)).

[0279] In addition, the notification of specific information (e.g., the notification of "is X") is not limited to explicit notification, and can also be performed implicitly (e.g., by not performing the notification of the specific information, or by the notification of other information).

[0280] The determination can be made by a value represented by one bit (0 or 1), by a true / false value (Boolean value) represented by true or false, or by a comparison of numerical values (e.g., comparison with a specific value).

[0281] Software, whether referred to as software, firmware, middleware, micro-code, a hardware description language, or by any other name, should be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, sub-programs, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, threads of execution, procedures, functions, etc.

[0282] In addition, software, instructions, information, etc. can also be sent and received via a transmission medium. For example, in the case of sending software from a website, server, or other remote source using at least one of wired technologies (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (infrared, microwave, etc.), at least one of these wired and wireless technologies is included in the definition of the transmission medium.

[0283] Terms such as "system" and "network" used in the present disclosure can be used interchangeably. "Network" can also mean a device (e.g., a base station) included in the network.

[0284] 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", "panel", etc. can be used interchangeably.

[0285] In the present disclosure, terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", etc. can be used interchangeably. There are also cases where terms such as macro cell, small cell, femto cell, pico cell, etc. are used to refer to the base station.

[0286] A base station can accommodate one or more (e.g., three) cells. When the base station accommodates multiple cells, the entire 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 (e.g., a small indoor base station (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services within the coverage range.

[0287] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "user device (User Equipment (UE))", "terminal", etc. can be used interchangeably.

[0288] In some cases, the mobile station is also referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client, or several other appropriate terms.

[0289] 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 mounted in a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), may also be a moving body that moves in an unmanned manner (e.g., a drone, a self-driving vehicle, etc.), may also be a robot (humanoid or non-humanoid). In addition, at least one of the base station and the mobile station includes a device that does not necessarily move during 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.

[0290] In addition, the base station in the present disclosure may also be interpreted as a user terminal. For example, for a structure in which communication between a base station and a user terminal is replaced by communication between multiple user terminals (e.g., may also be referred to as Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), the various methods / embodiments of the present disclosure may also be applied. In this case, it may also be configured such that the user terminal 20 has the functions of the above-described base station 10. In addition, expressions such as "uplink" and "downlink" may also be interpreted as expressions corresponding to inter-terminal communication (e.g., "side"). For example, an uplink channel, a downlink channel, etc. may also be interpreted as a side channel.

[0291] Similarly, the user terminal in the present disclosure may also be interpreted as a base station. In this case, it may also be configured such that the base station 10 has the functions of the above-described user terminal 20.

[0292] In the present disclosure, actions performed by a base station may sometimes be performed by its upper node according to circumstances. Apparently, in a network including one or more network nodes having a base station, various actions performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (for example, considering a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0293] Each mode / embodiment described in the present disclosure may be used alone, in combination, or switched during execution. In addition, the processing procedures, sequences, flowcharts, etc. of each mode / embodiment described in the present disclosure may be reordered as long as there is no contradiction. For example, for the methods described in the present disclosure, elements of various steps are presented in the illustrated order, but are not limited to the specific order presented.

[0294] Each mode / embodiment described in the present disclosure can also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER3G, IMT-Advanced, the fourth-generation mobile communication system (4G), the fifth-generation mobile communication system (5G), the sixth-generation mobile communication system (6G), the xth-generation mobile communication system (xG) (where 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, next-generation systems extended based on them, etc. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G) and applied.

[0295] The description "based on" used in the present disclosure does not mean "only based on" unless otherwise specified. In other words, the description "based on" means both "only based on" and "at least based on".

[0296] Any reference to an element using designations such as "first", "second", etc. used in this disclosure does not fully define the quantity or order of these elements. These designations can be used in this disclosure as a convenient method for distinguishing between more than two elements. Therefore, the reference to the first and second elements does not mean that only two elements can be adopted, or that the first element must be prior to the second element in a certain form.

[0297] The term "determining" used in this disclosure includes various actions in some cases. For example, "determining" can also be a case where judging, calculating, computing, processing, deriving, investigating, looking up (searching, inquiry) (such as searching in a table, database, or other data structure), ascertaining, etc. are regarded as performing "determining".

[0298] In addition, "determining" can also be a case where receiving (for example, receiving information), transmitting (for example, transmitting information), input, output, accessing (for example, accessing data in a memory), etc. are regarded as performing "determining".

[0299] In addition, "determining" can also be a case where resolving, selecting, choosing, establishing, comparing, etc. are regarded as performing "determining". That is to say, "determining" can also be a case where some actions are regarded as performing "determining".

[0300] In addition, "determining" can also be interpreted as "assuming", "expecting", "considering", etc.

[0301] As used in this disclosure, terms such as "connected" and "coupled", or any variations thereof, denote all direct or indirect connections or couplings between two or more elements, and can include the situation where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The coupling or connection between elements can be physical, logical, or a combination of these. For example, "connected" can also be interpreted as "accessed".

[0302] In this disclosure, when connecting two elements, it can be considered that one or more wires, cables, printed electrical connections, etc. are used, and electromagnetic energy with wavelengths in the radio frequency domain, microwave region, and optical (both visible and invisible) region is used as several non-limiting and non-exhaustive examples to "connect" or "couple" to each other.

[0303] In this disclosure, the term "A is different from B" can also mean "A and B are different from each other". Additionally, this term can also mean "A and B are each different from C". Terms such as "separated" and "coupled" can be similarly interpreted as "different".

[0304] In this disclosure, when using the terms "include", "including", and their variations, these terms, like the term "comprising", are meant in an inclusive sense. Further, the term "or" used in this disclosure does not mean the exclusive or.

[0305] In this disclosure, for example, in the case where articles are added through translation such as a, an, and the in English, this disclosure can also include the case where the nouns following these articles are in the plural form.

[0306] Above, the invention related to this disclosure has been described in detail. However, for those skilled in the art, the invention related to this disclosure is obviously not limited to the embodiments described in this disclosure. The invention related to this disclosure can be implemented in the form of modifications and changes without departing from the gist and scope of the present invention determined based on the description in the claims. Therefore, the description of this disclosure is for the purpose of illustration and does not carry any restrictive meaning for the invention related to this disclosure.

Claims

1. A terminal, characterized in that, it has: a receiving unit that receives information related to the spatial relationship used in physical uplink shared channel transmission, i.e., PUSCH transmission, information related to the repetition factor of PUSCH, and information related to the mapping of PUSCH; a control unit that controls to, when multiple pieces of information related to the spatial relationship are set, apply different spatial relationships to multiple PUSCHs using repeated transmission based on the information related to the repetition factor; and a transmitting unit that cyclically or continuously maps the different spatial relationships to the multiple PUSCHs based on the information related to the mapping, and transmits the multiple PUSCHs to multiple transmit-receive points, i.e., TRPs, wherein the receiving unit also receives information related to the repeated transmission type of PUSCH, and when the information related to the repeated transmission type indicates a repeated transmission type of PUSCH allocated across slot boundaries, the control unit applies the different spatial relationships to each of the multiple PUSCHs to which the repeated transmission type is applied.

2. The terminal according to claim 1, characterized in that, when two pieces of information related to the spatial relationship are set and the information related to the repetition factor indicates 4, the control unit cyclically applies a first spatial relationship to the first PUSCH and the third PUSCH among the multiple PUSCHs, and cyclically applies a second spatial relationship to the second PUSCH and the fourth PUSCH among the multiple PUSCHs; or the control unit continuously applies the first spatial relationship to the first PUSCH and the second PUSCH among the multiple PUSCHs, and continuously applies the second spatial relationship to the third PUSCH and the fourth PUSCH among the multiple PUSCHs.

3. A wireless communication method, which is a wireless communication method of a terminal, characterized in that, it has: a step of receiving information related to the spatial relationship used in physical uplink shared channel transmission, i.e., PUSCH transmission, information related to the repetition factor of PUSCH, and information related to the mapping of PUSCH; a step of controlling to, when multiple pieces of information related to the spatial relationship are set, apply different spatial relationships to multiple PUSCHs using repeated transmission based on the information related to the repetition factor; and a step of cyclically or continuously mapping the different spatial relationships to the multiple PUSCHs based on the information related to the mapping, and transmitting the multiple PUSCHs to multiple transmit-receive points, i.e., TRPs, further having: a step of receiving information related to the repeated transmission type of PUSCH, further having: a step of, when the information related to the repeated transmission type indicates a repeated transmission type of PUSCH allocated across slot boundaries, applying the different spatial relationships to each of the multiple PUSCHs to which the repeated transmission type is applied.

4. A base station, characterized in that, it has: A transmitting unit that transmits to a terminal: information related to the spatial relationship used in physical uplink shared channel transmission, i.e., PUSCH transmission, information related to the repetition factor of PUSCH, and information related to the mapping of PUSCH; A control unit that, when setting multiple pieces of information related to the spatial relationship, applies different spatial relationships and controls the reception of multiple PUSCHs that are repeatedly transmitted based on the information related to the repetition factor; And A receiving unit that receives the multiple PUSCHs to which the different spatial relationships are cyclically or continuously mapped and that are transmitted by the terminal to multiple transmit-receive points, i.e., TRPs; The transmitting unit further transmits to the terminal information related to the type of repeated transmission of PUSCH. When the information related to the type of repeated transmission indicates a type of repeated transmission of PUSCH that is allocated across slot boundaries, the control unit controls the reception of each PUSCH among the multiple PUSCHs to which the type of repeated transmission is applied and to which the different spatial relationships are applied.

5. A system having a terminal and a base station, Characterized in that The terminal has: A receiving unit that receives: information related to the spatial relationship used in physical uplink shared channel transmission, i.e., PUSCH transmission, information related to the repetition factor of PUSCH, and information related to the mapping of PUSCH; A control unit that controls to apply different spatial relationships to multiple PUSCHs that are repeatedly transmitted based on the information related to the repetition factor when multiple pieces of information related to the spatial relationship are set; And A transmitting unit that cyclically or continuously maps the different spatial relationships to the multiple PUSCHs and transmits the multiple PUSCHs to multiple transmit-receive points, i.e., TRPs, based on the information related to the mapping; The receiving unit also receives information related to the type of repeated transmission of PUSCH. When the information related to the type of repeated transmission indicates a type of repeated transmission of PUSCH that is allocated across slot boundaries, the control unit applies the different spatial relationships to each PUSCH among the multiple PUSCHs to which the type of repeated transmission is applied; The base station has: A transmitting unit that transmits information related to the spatial relationship, information related to the repetition factor, and information related to the mapping; A control unit that controls the reception of the multiple PUSCHs when multiple pieces of information related to the spatial relationship are set; And A receiving unit that receives the multiple PUSCHs to which the different spatial relationships are cyclically or continuously mapped and that are transmitted by the terminal to the multiple TRPs; The transmitting unit of the base station further transmits to the terminal information related to the type of repeated transmission of PUSCH, and the control unit of the base station controls the reception of each of the multiple PUSCHs to which the type of repeated transmission is applied.

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