User terminal and wireless communication method

Abstract

A user terminal according to one aspect of the present disclosure is characterized by including: a control unit that, when transmitting a plurality of uplink channels during a repetition period, determines an uplink channel to be transmitted among the plurality of uplink channels based on information related to quasi-co-location (QCL) of each of the plurality of uplink channels; and a transmission unit that transmits the determined uplink channel during the period. According to one aspect of the present disclosure, it is possible to appropriately handle simultaneous transmission of a plurality of uplink channels.

Description

Technical Field

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

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

[0003] Research is also being conducted on a successor system to LTE (for example, also referred to as 5G (5th generation mobile communication system), 5G+ (plus), NR (New Radio), 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 a future wireless communication system (for example, NR), research is being conducted on a UE to simultaneously transmit multiple channels in the same symbol in one or more component carriers (CC: Component Carrier). In addition, in NR, research is being conducted on the use of beamforming.

[0009] However, a UE using analog beamforming can form only one beam at a certain timing. In the case of simultaneously transmitting multiple channels, there has been no research on which channel to transmit. If the transmission of multiple channels simultaneously is not controlled according to appropriate rules, a disagreement occurs between the base station and the UE, and there is a concern that problems such as a reduction in communication throughput may occur.

[0010] Therefore, one object of the present disclosure is to provide a user terminal and a wireless communication method capable of appropriately performing simultaneous transmission of multiple uplink channels.

[0011] Means for Solving the Problem

[0012] A user terminal according to an aspect of the present disclosure is characterized by including: a control unit that, in the case of transmitting multiple uplink channels during a repetition period, determines an uplink channel to be transmitted among the multiple uplink channels based on information related to quasi-co-location (QCL) of each of the multiple uplink channels; and a transmission unit that transmits the determined uplink channel during the period.

[0013] Advantageous Effects of the Invention

[0014] According to an aspect of the present disclosure, it is possible to appropriately handle simultaneous transmission of multiple uplink channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is an example showing a problem related to simultaneous transmission of multiple channels.

[0016] Figure 2 FIG. is an example showing a schematic configuration of a wireless communication system according to an embodiment.

[0017] Figure 3 FIG. is an example showing a configuration of a base station according to an embodiment.

[0018] Figure 4 FIG. is an example showing a configuration of a user terminal according to an embodiment.

[0019] Figure 5 FIG. is an example showing a hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] (QCL / TCI)

[0021] In NR, research is being conducted on controlling the reception processing (e.g., at least one of reception, demapping, demodulation, decoding) of at least one of a signal and a channel (expressed as a signal / channel) based on a transmission configuration indication state (TCI state).

[0022] Here, the TCI state refers to information related to quasi-co-location (QCL) of a signal / channel, and can also be referred to as spatial reception parameters, spatial relation information, etc. The TCI state can also be set for a UE on a per-channel or per-signal basis.

[0023] QCL is an indicator representing the statistical properties of a signal / channel. For example, when a certain signal / channel is in a QCL relationship with other signal / channels, it can also mean that it can be assumed that at least one of Doppler shift, Doppler spread, average delay, delay spread, and spatial parameters (e.g., spatial reception parameters) is the same among these different multiple signal / channels (QCL for at least one of them).

[0024] In addition, the spatial reception parameters can also correspond to the reception beam of the UE (e.g., reception analog beam), and the beam can also be determined based on spatial QCL. The QCL (or at least one element of QCL) in this disclosure can also be replaced by sQCL (spatial QCL).

[0025] Multiple types (QCL types) of QCL can also be defined. For example, four different QCL types A - D can be set such that different parameters (or parameter sets) can be assumed to be the same, and the parameters are represented as follows:

[0026] · QCL type A: Doppler shift, Doppler spread, average delay, and delay spread,

[0027] · QCL type B: Doppler shift and Doppler spread,

[0028] · QCL type C: Doppler shift and average delay,

[0029] · QCL type D: Spatial reception parameters.

[0030] A UE's assumption that a specific CORESET, channel, or reference signal has a specific QCL relationship (e.g., QCL type D) with another CORESET, channel, or reference signal can also be referred to as a QCL assumption.

[0031] The UE can also determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of the signal / channel based on the TCI state of the signal / channel or the QCL assumption.

[0032] The TCI state can also be, for example, QCL-related information of a channel that is the object (or the reference signal (RS: Reference Signal) used by the channel) and another signal (e.g., another downlink reference signal (downlink reference signal (DL-RS: Downlink Reference Signal))). The TCI state can also be set (indicated) by higher-layer signaling, physical-layer signaling, or a combination thereof.

[0033] In this disclosure, the higher-layer signaling can also be, for example, one of or a combination of RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information, etc.

[0034] The MAC signaling can also use, for example, MAC control elements (MAC CE (Control Element)), MAC PDUs (Protocol Data Units), etc. The broadcast information can also be, for example, the Master Information Block (MIB), System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0035] The physical-layer signaling can also be, for example, Downlink Control Information (DCI).

[0036] A channel whose TCI state is set (specified), for example, can also be at least one of a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and an uplink control channel (Physical Uplink Control Channel (PUCCH)).

[0037] In addition, the RS that has a QCL relationship with this channel can also be, for example, at least one of a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), and a reference signal for measurement (Sounding Reference Signal (SRS)).

[0038] An SSB is a signal block that contains at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a broadcast channel (Physical Broadcast Channel (PBCH)). An SSB can also be referred to as an SS / PBCH block.

[0039] The information element of the TCI state set by higher-layer signaling (the "TCI-state IE" of RRC) can also contain one or more QCL information ("QCL-Info"). The QCL information can also contain at least one of information related to the DL-RS that has a QCL relationship (DL-RS association information) and information indicating the QCL type (QCL type information). The DL-RS association information can also contain information such as the index of the DL-RS (for example, the SSB index, the non-zero power CSI-RS resource ID), the index of the cell where the RS is located, and the index of the BWP (Bandwidth Part) where the RS is located.

[0040] (SRS)

[0041] In NR, the use of reference signals for measurement (Sounding Reference Signal (SRS)) is widespread. The SRS in NR is used not only for UL CSI measurement, which is also utilized in existing LTE (LTE Rel. 8 - 14), but also for DL CSI measurement, beam management, etc.

[0042] A UE can also be configured with one or more SRS resources. An SRS resource can also be determined by an SRS Resource Index (SRI).

[0043] Each SRS resource can also have one or more SRS ports (or can correspond to one or more SRS ports). For example, the number of ports for each SRS can also be 1, 2, 4, etc.

[0044] A UE can also be configured with one or more SRS resource sets. An SRS resource set can also be associated with a specific number of SRS resources. A UE can also use high - layer parameters in a common manner for the SRS resources included in an SRS resource set. Additionally, in this disclosure, a resource set can also be replaced with a resource group, simply referred to as a group, etc.

[0045] Information related to the SRS resource set and / or SRS resources can also be configured for the UE using high - layer signaling, physical - layer signaling, or a combination of them. Here, high - layer signaling can, for example, be one of RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information, or a combination of them.

[0046] MAC signaling can, for example, use MAC Control Elements (MAC CE (Control Element)), MAC PDUs (Protocol Data Units), etc. Broadcast information can, for example, be the Master Information Block (MIB), System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0047] Physical layer signaling can also be, for example, downlink control information (Downlink Control Information (DCI)).

[0048] The SRS configuration information (e.g., "SRS-Config" of the RRC information element) can also include SRS resource set configuration information, SRS resource configuration information, etc.

[0049] The SRS resource set configuration information (e.g., "SRS-ResourceSet" of the RRC parameter) can also include the SRS resource set ID (Identifier) (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, the SRS resource type, and information on the usage of the SRS.

[0050] Here, the SRS resource type can also represent one of periodic SRS (P-SRS: Periodic SRS), semi-persistent SRS (SP-SRS: Semi-Persistent SRS), and aperiodic CSI (A-SRS: Aperiodic SRS). In addition, the UE can also periodically (or periodically after activation) transmit P-SRS and SP-SRS, and transmit A-SRS based on the DCI-based SRS request.

[0051] In addition, the usage of the SRS ("usage" of the RRC parameter, "SRS-SetUse" of the L1 (Layer-1) parameter) can also be, for example, beam management, codebook, non-codebook, antenna switching, etc. The SRS for the codebook or non-codebook usage can also be used to determine the precoder for codebook-based or non-codebook-based PUSCH transmission based on the SRI.

[0052] It can also be envisioned that for the SRS for beam management usage, only one SRS resource can be transmitted at a specific time instant for each SRS resource set. In addition, when multiple SRS resources belong to different SRS resource sets respectively, these SRS resources can also be transmitted simultaneously.

[0053] The SRS resource setting information (e.g., "SRS-Resource" of RRC parameters) may also include the SRS resource ID (SRS-ResourceId), the number of SRS ports, the SRS port numbers, 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 association information, SRS resource type, sequence ID, spatial relation information, etc.

[0054] The UE may also transmit the SRS in adjacent symbols corresponding to the number of SRS symbols among the last 6 symbols within 1 time slot. In addition, the number of SRS symbols may also be 1, 2, 4, etc.

[0055] The UE may also switch the BWP (Bandwidth Part) for transmitting the SRS for each time slot, and may also switch the antennas. In addition, the UE may apply at least one of intra-slot hopping and inter-slot hopping to the SRS transmission.

[0056] As the transmission Comb of the SRS, Comb2 (configuring the SRS every 2 REs (Resource Elements)) or Comb4 (configuring the SRS every 4 REs), and IFDMA (Interleaved Frequency Division Multiple Access) with cyclic shift (CS: Cyclic Shift) may also be applied.

[0057] The spatial relation information of the SRS (the "spatialRelationInfo" of the RRC parameter) may also represent the spatial relation information between a specific reference signal and the SRS. This specific reference signal may also be at least one of a synchronization signal / broadcast channel (synchronization signal / physical broadcast channel (SS / PBCH: Synchronization Signal / Physical Broadcast Channel)) block, a channel state information reference signal (CSI-RS: Channel State Information Reference Signal), and an SRS (e.g., another SRS). Here, the SS / PBCH block may also be referred to as a synchronization signal block (SSB).

[0058] The spatial relation information of the SRS may also include at least one of the SSB index, the CSI-RS resource ID, and the SRS resource ID as the index of the above specific reference signal.

[0059] In addition, in the present disclosure, the SSB index, the SSB resource ID, and the SSBRI (SSB Resource Indicator) can also be replaced with each other. In addition, the CSI-RS index, the CSI-RS resource ID, and the CRI (CSI-RS Resource Indicator) can also be replaced with each other. In addition, the SRS index, the SRS resource ID, and the SRI can also be replaced with each other.

[0060] The spatial relation information of the SRS may also include the serving cell index, the BWP index (BWP ID), etc. corresponding to the above specific reference signal.

[0061] When the UE is configured with the spatial relation information related to the SSB or CSI-RS and SRS for a certain SRS resource, the UE may also use the same spatial domain filter as that used for receiving the SSB or CSI-RS to transmit the SRS resource. That is to say, in this case, the UE receive beam of the SSB or CSI-RS and the UE transmit beam of the SRS can also be considered the same.

[0062] When the UE is configured with the spatial relation information related to another SRS (reference SRS) and a certain SRS (target SRS) for a certain SRS (target SRS) resource, the UE may also use the same spatial domain filter as that used for transmitting the reference SRS to transmit the target SRS resource. That is to say, in this case, the UE transmit beam of the reference SRS and the UE transmit beam of the target SRS can also be considered the same.

[0063] In addition, the spatial domain filter for the base station's transmission, the downlink spatial domain transmission filter, and the base station's transmission beam can also be replaced with each other. The spatial domain filter for the base station's reception, the uplink spatial domain receive filter, and the base station's reception beam can also be replaced with each other.

[0064] In addition, the spatial domain filter for the UE's transmission, the uplink spatial domain transmission filter, and the UE's transmission beam can also be replaced with each other. The spatial domain filter for the UE's reception, the downlink spatial domain receive filter, and the UE's reception beam can also be replaced with each other.

[0065] The beam indication for PUCCH can also be set by higher layer signaling (PUCCH spatial relation (PUCCH-Spatial-relation-info) in RRC). For example, when the PUCCH spatial relation information contains a spatial relation information (SpatialRelationInfo) parameter, the UE can also apply the set parameter to the PUCCH. When the PUCCH spatial relation information contains more than one spatial relation information parameter, the parameter applied to the PUCCH (activated) can also be determined based on the MAC CE.

[0066] In addition, the spatial relation information of the PUCCH can also be the information obtained by replacing SRS with PUCCH in the above-mentioned spatial relation information of the SRS, so it will not be repeated here.

[0067] The beam indication for PUSCH can also be determined based on the SRI (SRS Resource Indicator) field included in the DCI. The UE can also use the same transmission beam as the corresponding SRS among the SRSs set by the higher layer based on the specified SRI to transmit the PUSCH.

[0068] (UL simultaneous transmission)

[0069] In NR, research is being conducted on the UE to simultaneously transmit multiple channels in the same symbol on one or more component carriers (CC: Component Carrier).

[0070] Figure 1 It is a diagram showing an example of the problems related to the simultaneous transmission of multiple channels. This example shows that the UE transmits channels (for example, at least one of PUCCH and PUSCH) using different beams on 2 CCs in 1 time slot. The UE is scheduled to use beam 1 to transmit PUCCH1 or PUSCH1 on CC#0 and use beam 2 to transmit PUCCH2 or PUSCH2 on CC#1.

[0071] In NR, in Figure 1 In the case of simultaneously transmitting multiple channels as described above, there has been no research on which channel to transmit. If the transmission in the simultaneous transmission of multiple channels is not controlled according to appropriate rules, there will be a disagreement between the base station and the UE, and there is a concern that problems such as a reduction in communication throughput will occur.

[0072] Therefore, the inventors of the present invention have conceived a UE operation that can appropriately handle the simultaneous transmission of multiple uplink channels (for example, PUSCH-PUSCH).

[0073] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the respective embodiments can be applied separately or in combination.

[0074] In addition, hereinafter, the SRI can be replaced with either spatial relation information (or the ID of the spatial relation information) or the SRS resource index. For example, the SRI for PUCCH can also be replaced with spatial relation information (or the ID of the spatial relation information (e.g., "PUCCH-SpatialRelationInfoId" of the RRC parameter)), and the SRI for PUSCH can also be replaced with the SRS resource index. The SRI can also be replaced with information related to QCL.

[0075] In the present disclosure, the fact that multiple SRIs are the same may only mean that the values of these SRIs are the same, or may mean that the resources corresponding to the SRIs (e.g., SSB resources, CSI-RS resources, SRS resources, etc.) are the same. The same applies to the case where this "same" is replaced with "different".

[0076] The fact that multiple SRIs are the same may only mean that the values of these SRIs are the same, or may mean that the resources corresponding to the SRIs (e.g., SSB resources, CSI-RS resources, SRS resources, etc.) are the same. The same applies to the case where this "same" is replaced with "different".

[0077] In the following embodiments, as the multiple channels (the first channel and the second channel) to be simultaneously transmitted, it is assumed that both are PUCCH, both are PUSCH, one is PUCCH and the other is PUSCH, etc., but the signals, channels, etc. to be simultaneously transmitted are not limited thereto. The channels in the respective embodiments can also be replaced with SRS, demodulation reference signal (DMRS), etc.

[0078] (Wireless Communication Method)

[0079] <First Embodiment>

[0080] The first embodiment relates to the assumption when the first channel and the second channel are simultaneously transmitted. The first embodiment is roughly divided into cases where the SRIs of the two channels both correspond to UL RS (e.g., SRS) resources (Embodiment 1.1), both correspond to DLRS (e.g., CSI-RS, SSB) resources (Embodiment 1.2), and one corresponds to UL RS resources and the other corresponds to DLRS resources (Embodiment 1.3).

[0081] [Embodiment 1.1]

[0082] In Embodiment 1.1, when the SRIs for two channels to be transmitted simultaneously are the same, the UE transmits both channels simultaneously.

[0083] In Embodiment 1.1, when the SRIs for two channels to be transmitted simultaneously are different, the UE determines to transmit, during the simultaneous transmission, the channel corresponding to one of the following (1)-(8) among the two channels:

[0084] (1) The channel in the CC with a specific CC index (or serving cell index or secondary cell (SCell) index),

[0085] (2) The channel corresponding to a specific SRI,

[0086] (3) The channel on which the scheduled (or triggered) DCI is transmitted earliest or latest,

[0087] (4) The channel with the longest or shortest duration,

[0088] (5) The channel including the HARQ-ACK for which the corresponding PDSCH is transmitted earliest or latest,

[0089] (6) The channel including higher-priority uplink control information (Uplink Control Information (UCI)) (in particular, when the above two channels are a combination of two PUCCHs),

[0090] (7) PUCCH,

[0091] (8) PUSCH.

[0092] Here, "specific" in the above (1) and (2) may also mean at least one of "lowest", "highest / largest", etc.

[0093] The DCI in the above (3) may also be a DCI scheduling PDSCH (e.g., DL allocation), or may be a DCI scheduling PUSCH (e.g., UL grant). For example, when the channel in the above (3) is PUCCH, the DCI scheduling this channel may also be DL allocation. In addition, when the channel in the above (3) is PUSCH, the DCI scheduling this channel may also be UL grant.

[0094] The priorities of the above (6) can also increase, for example, in the order of HARQ-ACK, SR, and CSI (HARQ-ACK has the highest priority). The priorities in the case of multiple CSIs can also follow the existing CSI priority rules (which can also be referred to as dropping rules). Additionally, the priorities of the above (6) are not limited to this.

[0095] The above (5) and (6) can also be specifically applied to the case where the above two channels are a combination of two PUCCHs. In addition, the above (7) and (8) can also be specifically applied to the case where the above two channels are a combination of PUCCH and PUSCH.

[0096] According to the structure of the channel on which the UE sends the smallest CC index according to the above (1), the channel of the important Primary Cell (PCell) can be properly sent.

[0097] According to the structure of the channel on which the UE sends the smallest SRI according to the above (2), the UE can ensure communication on a specific beam by associating the beam that it does not want to discard from transmission with a smaller SRI.

[0098] According to the structure of the channel on which the UE sends the scheduled DCI earliest according to the above (3), a channel with a high probability of having the transmission preparation completed can be sent. According to the structure of the channel on which the UE sends the scheduled DCI latest according to the above (3), a channel that is considered to be of higher importance can be properly sent.

[0099] According to the structure of the channel on which the UE sends the longest or shortest duration according to the above (4), the UE can prioritize appropriate communication among low-latency communication, fast communication, etc.

[0100] According to the structure of the channel on which the UE sends the HARQ-ACK containing the corresponding PDSCH earliest according to the above (5), a channel with a high probability of having the transmission preparation completed for HARQ-ACK can be sent. According to the structure of the channel on which the UE sends the HARQ-ACK containing the corresponding PDSCH latest according to the above (5), a channel that is considered to be of higher importance can be sent.

[0101] If following the above (6), a channel containing UCI that is considered to be of higher importance can be properly sent.

[0102] If following the above (7) or (8), a specific channel can be properly sent during simultaneous transmission.

[0103] Alternatively, the UE may not expect a situation where the SRIs for two channels to be transmitted simultaneously are different (it may also be assumed that such a situation does not occur, and the simultaneous transmission of channels with different SRIs is not scheduled).

[0104] [Embodiment 1.2]

[0105] In Embodiment 1.2, when the SRIs for two channels to be transmitted simultaneously are the same, the UE may also transmit both channels simultaneously.

[0106] In Embodiment 1.2, when the SRIs for two channels to be transmitted simultaneously are different and the multiple resources corresponding to these SRIs are mutually QCL type D (which may also be referred to as QCL-D), the UE may also transmit both channels simultaneously.

[0107] In addition, the SSB resource and the CSI-RS resource are QCL-D. For example, it may also be determined based on the SSB index included in the RRC parameter "associatedSSB" set for the CSI-RS index.

[0108] In Embodiment 1.2, when the SRIs for two channels to be transmitted simultaneously are different and the multiple resources corresponding to these SRIs are not mutually QCL-D, the UE may also decide to transmit, during the simultaneous transmission period, the channel corresponding to one of the above (1)-(8) among the two channels. In Embodiment 1.1 and 1.2, it is preferable to adopt different policies among the above (1)-(8) respectively.

[0109] Alternatively, the UE may not expect a situation where the SRIs for two channels to be transmitted simultaneously are different (it may also be assumed that such a situation does not occur, and the simultaneous transmission of channels with different SRIs is not scheduled).

[0110] [Embodiment 1.3]

[0111] Embodiment 1.3 may be the same as Embodiment 1.1 or 1.2, so the description will not be repeated.

[0112] According to the first embodiment described above, it is possible to appropriately handle the simultaneous transmission of multiple uplink channels.

[0113] <Second Embodiment>

[0114] The second embodiment is related to UE capabilities. It can also be assumed that a UE with specific UE capabilities, or a UE that has reported information on such specific UE capabilities, can transmit multiple channels simultaneously (in particular, multiple channels with different corresponding SRIs). On the other hand, it can also be assumed that a UE without such specific capabilities or a UE that has not reported information on such specific capabilities cannot transmit multiple channels simultaneously.

[0115] The above-mentioned specific UE capability information can also be information indicating the ability to transmit multiple channels simultaneously, information indicating the possession (support) of multiple panels (e.g., multiple panels for UL), or information indicating the ability to transmit two or more transmission beams (or SRS resources or SRIs) simultaneously (e.g., information on the maximum number of beams or SRSs or SRIs that can be transmitted simultaneously).

[0116] A UE that has reported the maximum number of beams that can be transmitted simultaneously can also be restricted so that, at the timing of transmitting more channels than this maximum number of beams simultaneously, the channels are transmitted up to this maximum number of beams simultaneously. In the case of being restricted, the channels to be transmitted can be determined as shown in the first embodiment above.

[0117] According to the second embodiment described above, it is possible to appropriately determine whether multiple uplink channels can be transmitted simultaneously.

[0118] <Variant Example>

[0119] In the above-described embodiments, when more than two channels are transmitted simultaneously, it is also possible to transmit simultaneously a set of channels that are in a QCL-D relationship with each other among these more than two channels.

[0120] In the case where a UE transmits more than two channels simultaneously, that is, when these channels include a first set of channels that are in a QCL-D relationship with each other and a second set of channels that are in a QCL-D relationship with each other, it is also possible to transmit simultaneously the set with a larger number of channels among these sets.

[0121] For example, at the timing when a UE transmits five PUCCHs (PUCCH1 to PUCCH5), if the SRI of PUCCH1 is different from the SRI of PUCCH4, and PUCCH1 and 2 are in QCL-D, and PUCCH3, 4, and 5 are in QCL-D, it is also possible to transmit PUCCH3, 4, and 5 simultaneously and discard PUCCH1 and 2.

[0122] Channels that are in a QCL-D relationship with each other can be counted as 1 as the number of transmission beams regardless of the number of channels transmitted simultaneously.

[0123] In addition, in the present disclosure, "simultaneous" can also be replaced by "overlapped". Therefore, the simultaneous transmission of multiple channels can also include cases where the multiple channels completely overlap within the same time length as in Figure 1 and cases where the multiple channels overlap within a part of the time resources (e.g., symbols). The embodiments of the present disclosure can also be applied to the determination of the uplink channels transmitted within the part of the time resources in the case where the respective SRIs (QCLs) are different for multiple channels that overlap in at least a part of the time domain resources.

[0124] Furthermore, the embodiments of the present disclosure can be applied regardless of whether the UE can use analog beams and digital beams. Through unified processing, reduction of the processing load of the UE can be expected, etc.

[0125] In addition, in each of the embodiments, it has been described that the simultaneous transmission of multiple channels is performed with different CCs, but it is not limited thereto. Each channel can also be transmitted with different specific control units. The control unit can, for example, also be one of CC, CC group, cell group, PUCCH group, MAC entity, frequency range (FR: Frequency Range), band, BWP, etc. or a combination thereof. The above control unit can also be abbreviated as a group.

[0126] In addition, the methods of the embodiments can also be applied in the case where the simultaneous transmission of multiple channels is performed with the same CC.

[0127] In each of the above embodiments, examples have been mainly shown where the QCL of the UL channel can be determined by the SRI, but it is not limited thereto. "The same / different SRIs" in each of the embodiments can also be replaced by "the same / different QCLs (or QCL assumptions or TCI states)".

[0128] In addition, "the SRIs of two channels are the same" can also be replaced by that one of the beams of the two channels (or the resources corresponding to the SRIs of the two channels) is included in or adjacent to the other beam. "Two resources are QCL-D" can also be replaced by that one of the beams of the two resources is included in or adjacent to the other beam.

[0129] (Wireless Communication System)

[0130] Hereinafter, the structure of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, communication is performed using one or a combination of the wireless communication methods according to the above embodiments of the present disclosure.

[0131] Figure 2This is a diagram showing an example of the schematic structure of a wireless communication system according to an embodiment. The wireless communication system 1 may also be a system that uses LTE (Long Term Evolution) standardized by 3GPP (Third Generation Partnership Project), 5G NR (5th generation mobile communication system New Radio), etc. to implement communication.

[0132] In addition, the wireless communication system 1 may also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple RATs (Radio Access Technologies). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0133] 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.

[0134] The wireless communication system 1 may also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both the MN and the SN are base stations (gNBs) of NR (NR-NR Dual Connectivity (NN-DC))).

[0135] 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 configured 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 in at least one of the cells. The configuration, number, etc. of each cell and the user terminal 20 are not limited to the illustrated manner. Hereinafter, without distinguishing between the base stations 11 and 12, they are collectively referred to as the base station 10.

[0136] The user terminal 20 can also be connected to at least one of the multiple base stations 10. The user terminal 20 can also utilize at least one of carrier aggregation (CA) and dual connectivity (DC) using multiple component carriers (CCs).

[0137] Each CC can also be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 can also be included in FR1, and the small cell C2 can also be included in FR2. For example, FR1 can also be a sub-6 GHz band, and FR2 can also be a band above 24 GHz. Additionally, the frequency bands, definitions, etc. of FR1 and FR2 are not limited to these. For example, FR1 can also correspond to a band higher than FR2.

[0138] Furthermore, the user terminal 20 can also communicate using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0139] The multiple base stations 10 can also be connected by wire (e.g., optical fiber compliant with CPRI (Common Public Radio Interface), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 serving as the upper station can also be referred to as an IAB (Integrated Access Backhaul) donor, and the base station 12 serving as a relay station can also be referred to as an IAB node.

[0140] The base station 10 can also be connected to the core network 30 via another base station 10 or directly. The core network 30 can, for example, also include at least one of EPC (Evolved Packet Core), 5GCN (5G Core Network), NGC (Next Generation Core), etc.

[0141] The user terminal 20 can also be a terminal supporting at least one of communication methods such as LTE, LTE-A, 5G, etc.

[0142] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) can also be used. For example, in at least one of the downlink (DL) and the uplink (UL), CP-OFDM (Cyclic Prefix OFDM), DFT-s-OFDM (Discrete Fourier Transform Spread OFDM), OFDMA (Orthogonal Frequency Division Multiple Access), SC-FDMA (Single Carrier Frequency Division Multiple Access), etc. can also be used.

[0143] 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 used for the wireless access methods of the UL and the DL.

[0144] In the wireless communication system 1, as a downlink channel, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. can also be used.

[0145] Furthermore, in the wireless communication system 1, as an uplink channel, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. can also be used.

[0146] User data, high-layer control information, SIB (System Information Block), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, MIB (Master Information Block) can also be transmitted through PBCH.

[0147] Low-layer control information can also be transmitted through PDCCH. The low-layer control information includes, for example, downlink control information (DCI: Downlink Control Information), and the downlink control information includes scheduling information for at least one of PDSCH and PUSCH.

[0148] In addition, the DCI that schedules PDSCH can also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules PUSCH can also be referred to as UL grant, UL DCI, etc. In addition, PDSCH can be replaced by DL data, and PUSCH can be replaced by UL data.

[0149] In the detection of PDCCH, a control resource set (CORESET: COntrol REsource SET) and a search space can also be used. CORESET corresponds to the resource for searching DCI. The search space corresponds to the search area and search method for PDCCH candidates (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 setting.

[0150] One SS can also correspond to PDCCH candidates equivalent to one or more aggregation levels (aggregation Level). One or more search spaces can also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting", etc. in the present disclosure can also be replaced with each other.

[0151] Channel state information (CSI), delivery confirmation information (e.g., HARQ-ACK (which may also be referred to as Hybrid Automatic Repeat reQuest ACKnowledgement), ACK / NACK, etc.), scheduling request (SR), etc. can also be transmitted through PUCCH. The random access preamble for establishing a connection with a cell can also be transmitted through PRACH.

[0152] In addition, in the present disclosure, the downlink, uplink, etc. can also be expressed without appending "link". Furthermore, it can also be expressed without appending "Physical" at the beginning of various channels.

[0153] In the wireless communication system 1, synchronization signals (SS: Synchronization Signal), downlink reference signals (DL-RS: Downlink Reference Signal), etc. can also be transmitted. In the wireless communication system 1, cell-specific reference signals (CRS: Cell-specific Reference Signal), channel state information reference signals (CSI-RS: Channel State Information Reference Signal), demodulation reference signals (DMRS: DeModulationReference Signal), positioning reference signals (PRS: Positioning Reference Signal), phase tracking reference signals (PTRS: Phase Tracking Reference Signal), etc. can also be transmitted as DL-RS.

[0154] The synchronization signal can, for example, also be at least one of the primary synchronization signal (PSS: Primary Synchronization Signal) and the secondary synchronization signal (SSS: Secondary Synchronization Signal). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) can also be referred to as an SS / PBCH block, SSB (SS block (Block)), etc. In addition, SS, SSB, etc. can also be referred to as reference signals.

[0155] In addition, in the wireless communication system 1, measurement reference signals (sounding reference signals (SRS)), demodulation reference signals (DMRS), etc. can also be transmitted as uplink reference signals (UL-RS). In addition, DMRS can also be referred to as a user terminal specific reference signal (UE-specific Reference Signal).

[0156] (Base station)

[0157] Figure 3 FIG. is an example showing 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 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.

[0158] 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 further has other functional blocks required for wireless communication. A part of the processing of each unit described below may also be omitted.

[0159] The control unit 110 implements overall control of the base station 10. The control unit 110 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.

[0160] The control unit 110 can also control the generation, scheduling (e.g., resource allocation, mapping), etc. of signals. The control unit 110 can 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 can also generate data, control information, sequences, etc. to be transmitted as signals and forward them to the transmission / reception unit 120. The control unit 110 can also perform call processing (setting, releasing, etc.) of communication channels, state management of the base station 10, management of radio resources, etc.

[0161] The transmission and reception unit 120 may also include a baseband unit 121, an RF (Radio Frequency) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmission processing unit 1211 and a reception processing unit 1212. The transmission and reception unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission and reception circuit, etc., which are described based on the common knowledge in the technical field related to the present disclosure.

[0162] The transmission and reception unit 120 may also be configured as an integrated transmission and reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may also be composed of a transmission processing unit 1211 and an RF unit 122. The reception unit may also be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0163] The transmission and reception antenna 130 may 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.

[0164] The transmission and reception unit 120 may also transmit the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmission and reception unit 120 may also receive the above-mentioned uplink channels, uplink reference signals, etc.

[0165] The transmission and reception unit 120 may also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc. to form at least one of a transmission beam and a reception beam.

[0166] The transmission and reception unit 120 (transmission processing unit 1211), for example, may also perform processing at the PDCP (Packet Data Convergence Protocol) layer, RLC (Radio Link Control) layer (e.g., RLC retransmission control), MAC (Medium Access Control) 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.

[0167] The transmission / reception unit 120 (transmission processing unit 1211) can also perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filter processing, discrete Fourier transform (DFT: Discrete Fourier Transform) processing (if necessary), inverse fast Fourier transform (IFFT: Inverse Fast Fourier Transform) processing, precoding, digital-to-analog conversion, etc. on the bit string to be transmitted, and output a baseband signal.

[0168] The transmission / reception unit 120 (RF unit 122) can also perform modulation to the radio frequency band, filter processing, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmission / reception antenna 130.

[0169] On the other hand, the transmission / reception unit 120 (RF unit 122) can also perform amplification, filter processing, demodulation to the baseband signal, etc. on the radio frequency band signal received by the transmission / reception antenna 130.

[0170] The transmission / reception unit 120 (reception processing unit 1212) can also perform reception processing such as analog-to-digital conversion, fast Fourier transform (FFT: Fast Fourier Transform) processing, inverse discrete Fourier transform (IDFT: Inverse Discrete Fourier Transform) processing (if necessary), filter 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.

[0171] The transmission / reception unit 120 (measurement unit 123) may also perform measurements related to the received signal. For example, the measurement unit 123 may also perform RRM (Radio Resource Management) measurements, CSI (Channel State Information) measurements, etc. based on the received signal. The measurement unit 123 may also perform measurements on received power (e.g., RSRP (Reference Signal Received Power)), received quality (e.g., RSRQ (Reference Signal Received Quality), SINR (Signal to Interference plus Noise Ratio), SNR (Signal to Noise Ratio)), signal strength (e.g., RSSI (Received Signal Strength Indicator)), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0172] 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 obtain and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0173] 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, the transmission / reception antenna 130, and the transmission path interface 140.

[0174] In addition, the control unit 210 may also schedule the user terminal 20 to perform transmissions on multiple uplink channels during a repetition period (e.g., the same OFDM symbol). The control unit 210 may also receive, during the repetition period, the uplink channels determined (selected) by the user terminal 20 based on the QCL-related information of each of the multiple uplink channels.

[0175] (User Terminal)

[0176] Figure 4 FIG. is an example showing the structure of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, one or more of the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided respectively.

[0177] In addition, in this example, the functional blocks mainly representing the characteristic parts in this embodiment, the user terminal 20 can also be conceived as having other functional blocks required for wireless communication. A part of the processing of each unit described below can also be omitted.

[0178] The control unit 210 implements the overall control of the user terminal 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 this disclosure.

[0179] 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 transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 can also generate data, control information, sequences, etc. to be transmitted as signals and forward them to the transmission and reception unit 220.

[0180] The transmission and reception 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 transmission and reception unit 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission and reception circuit, etc. described based on the common knowledge in the technical field related to this disclosure.

[0181] The transmission and reception unit 220 may be configured as an integrated transmission and 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 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.

[0182] The transmission and reception antenna 230 can be composed of an antenna described based on the common knowledge in the technical field related to this disclosure, such as an array antenna.

[0183] The transmission and reception unit 220 can also receive the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmission and reception unit 220 can also transmit the above-mentioned uplink channels, uplink reference signals, etc.

[0184] The transmission and reception unit 220 can also form at least one of a transmission beam and a reception beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.

[0185] The transmission / reception unit 220 (transmission processing unit 2211) can also perform, for example, PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0186] The transmission / reception unit 220 (transmission processing unit 2211) can also perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filter 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.

[0187] In addition, whether to apply DFT processing can also be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transmission / reception unit 220 (transmission processing unit 2211) can perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using the DFT-s-OFDM waveform. Otherwise, it can also not perform DFT processing as the above-mentioned transmission processing.

[0188] The transmission / reception unit 220 (RF unit 222) can also perform modulation to the radio frequency band, filter processing, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmission / reception antenna 230.

[0189] On the other hand, the transmission / reception unit 220 (RF unit 222) can also perform amplification, filter processing, demodulation to the baseband signal, etc. on the radio frequency band signal received by the transmission / reception antenna 230.

[0190] The transmission / reception unit 220 (reception processing unit 2212) can also perform reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter 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.

[0191] The transmission / reception unit 220 (measurement unit 223) can also perform measurements related to the received signal. For example, the measurement unit 223 can perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 can also measure the received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results can also be output to the control unit 210.

[0192] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be constituted by at least one of a transmitting and receiving unit 220, a transmitting and receiving antenna 230, and a transmission path interface 240.

[0193] In addition, when the control unit 210 transmits multiple uplink channels (for example, PUCCH and PUSCH, two PUCCHs, two PUSCHs, etc.) during a repetition period (for example, the same OFDM symbol) (which may also mean being instructed (scheduled) to transmit, being scheduled to transmit, etc.), it may also determine the uplink channel to be transmitted among the multiple uplink channels based on the QCL-related information of each of the multiple uplink channels.

[0194] The QCL-related information may also be at least one of spatial relation information, an ID of the spatial relation information, an SRS resource index, information related to SRS, a TCI state, etc. The QCL-related information may also be transmitted through higher layer signaling, physical layer signaling, or a combination thereof.

[0195] The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel determined by the control unit 210 to the base station 10 during the repetition period.

[0196] For example, the control unit 210 may also be determined to transmit a channel corresponding to one of (1)-(8) described in the first embodiment. For example, when the QCL-related information of the multiple uplink channels is different, the control unit 210 may determine the uplink channel with the longest or shortest duration among the multiple uplink channels as the uplink channel to be transmitted.

[0197] When there are more than two of the multiple uplink channels, that is, when the multiple uplink channels include a first set of uplink channels that are in a QCL type D relationship with each other and a second set of uplink channels that are in a QCL type D relationship with each other, the control unit 210 may determine the uplink channel included in the set with a larger number of channels as the uplink channel to be transmitted. In addition, a set may also be referred to as a group.

[0198] When the number of the multiple uplink channels is more than the maximum number of beams that can be transmitted simultaneously, the control unit 210 may determine the uplink channel to be transmitted among the multiple uplink channels based on the QCL-related information of the multiple uplink channels. The transmitting and receiving unit 220 may also transmit the capability information of the maximum number of beams that can be transmitted simultaneously to the base station 10.

[0199] (Hardware Structure)

[0200] In addition, the block diagrams used to illustrate the above-described embodiments represent blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. Furthermore, the implementation method of each functional block is not particularly limited. That is, each functional block may also be implemented using a single physically or logically combined device, or two or more physically or logically separated devices may be directly or indirectly (e.g., using wired, wireless, etc.) connected and these multiple devices may be used for implementation. The functional block may also be implemented by combining software in the above-described single device or the above-described multiple devices.

[0201] Here, among functions, there are judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, regarded as, broadcasting, notifying, communicating, forwarding, configuring (setting), reconfiguring (re-setting), allocation (allocating, mapping), assignment, etc., but are not limited to these. For example, a functional block (structural unit) that exhibits a transmission function may also be referred to as a transmitting unit, a transmitter, etc. As described above, the implementation method is not particularly limited.

[0202] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 5 FIG. is an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may 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.

[0203] In addition, in the present disclosure, languages such as device, circuit, equipment, section, unit, etc. can be replaced with each other. The hardware configuration of the base station 10 and the user terminal 20 may also be configured to include one or more of the illustrated devices, or may be configured not to include some of the devices.

[0204] For example, only one processor 1001 is illustrated, but there may be multiple processors. In addition, the processing may be executed by one processor, or may be executed by two or more processors simultaneously, sequentially, or using other methods. Additionally, the processor 1001 may also be implemented by one or more chips.

[0205] Each function in the base station 10 and the user terminal 20 is implemented, for example, by causing a specific software (program) to be read into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs operations, 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.

[0206] The processor 1001, for example, operates on the operating system to control the entire computer. The processor 1001 may also be constituted by a central processing unit (central processing unit (CPU: Central Processing Unit)) 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.

[0207] 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 according to them. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiments is 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.

[0208] The memory 1002 is a computer-readable recording medium, and may be constituted by, for example, at least one of a ROM (read-only memory (ReadOnly Memory)), EPROM (erasable programmable ROM (Erasable Programmable ROM)), EEPROM (electric EPROM (Electrically EPROM)), RAM (random access memory (Random Access Memory)), 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.

[0209] The storage device 1003 is a computer-readable recording medium, which can also be composed of at least one of, for example, a floppy disk, a Floppy (registered trademark) disk, an optical disk (e.g., a compact disc (CD-ROM (Compact Disc ROM), etc.), a digital versatile disc, a Blu-ray (registered trademark) disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., 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.

[0210] The communication device 1004 is hardware (a transmitting and receiving device) for performing communication between computers 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. The communication device 1004 can also include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to implement at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). For example, the above-described transmitting and receiving unit 120 (220), the 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 implemented such that the transmitting unit 120a (220a) and the receiving unit 120b (220b) are physically or logically separated.

[0211] The input device 1005 is an input device (e.g., 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 (e.g., a display, a speaker, an LED (Light Emitting Diode) 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 (e.g., a touch panel).

[0212] 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 can be constituted by different buses between each device.

[0213] In addition, the base station 10 and the user terminal 20 may also include hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). Part or all of the functional blocks may also be implemented using this hardware. For example, the processor 1001 may also be implemented using at least one of these hardware components.

[0214] (Variant example)

[0215] Furthermore, for the terms described in this disclosure and the terms required for understanding this disclosure, they 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. The reference signal can also be abbreviated as RS (Reference Signal), and may also be referred to as a pilot, a pilot signal, etc. according to the applied standard. In addition, a component carrier (CC: Component Carrier) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0216] 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) that make up the radio frame may also be referred to as a subframe. Furthermore, a subframe may also be composed of one or more time slots in the time domain. A subframe may also have a fixed time length (e.g., 1 ms) independent of the numerology.

[0217] Here, the numerology may also be communication parameters applied to at least one of the transmission and reception of a certain signal or channel. The numerology may, for example, represent at least one of a subcarrier spacing (SCS: SubCarrier Spacing), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI: Transmission Time Interval), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transmitter-receiver in the frequency domain, a specific windowing process performed by a transmitter-receiver in the time domain, etc.

[0218] A time slot can also be composed of one or more symbols (such as OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. In addition, a time slot can also be a time unit based on a parameter set.

[0219] 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 PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot can also be called PDSCH (PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using a mini-slot can also be called PDSCH (PUSCH) mapping type B.

[0220] A radio frame, a sub-frame, a time slot, a mini-slot, and a symbol all represent time units for signal transmission. A radio frame, a sub-frame, a time slot, a mini-slot, and a symbol can also use other corresponding 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.

[0221] For example, 1 sub-frame can also be called a TTI, multiple consecutive sub-frames can also be called a TTI, 1 time slot or 1 mini-slot can also be called a TTI. That is to say, at least one of the sub-frame and the TTI can be the sub-frame (1 ms) in the existing LTE, can also be a period shorter than 1 ms (for example, 1 - 13 symbols), or can also be a period longer than 1 ms. In addition, the unit representing the TTI can also be called a time slot, a mini-slot, etc., rather than a sub-frame.

[0222] Here, the TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as the 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 the TTI is not limited to this.

[0223] The TTI can also be the transmission time unit of data packets (transport blocks), code blocks, codewords, etc. after channel coding, and can also become 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) in which a transport block, a code block, a codeword, etc. are mapped can also be shorter than the TTI.

[0224] In addition, when one time slot or one mini time slot is called 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 make up the minimum time unit of this scheduling can also be controlled.

[0225] A TTI with a time length of 1 ms can also be called a normal TTI (TTI in 3GPP Rel.8 - 12), a normal TTI, a long TTI, a normal subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI can also be called a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub - time slot, a time slot, etc.

[0226] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) can also be replaced by a TTI with a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) can also be replaced by a TTI with a TTI length less than that of the long TTI and not less than 1 ms.

[0227] A resource block (RB: Resource Block) is a resource allocation unit in the time domain and the frequency domain, and in the frequency domain, it can also contain one or more consecutive sub - carriers (subcarriers). The number of sub - carriers contained in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of sub - carriers contained in an RB can also be determined based on the parameter set.

[0228] In addition, an RB can also contain one or more symbols in the time domain, and can also 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.

[0229] In addition, one or more RBs can also be called a physical resource block (PRB: Physical RB), a sub - carrier group (SCG: Sub - Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, etc.

[0230] In addition, a resource block can also be composed of one or more resource elements (RE: Resource Element). For example, one RE can also be a radio resource area of one sub - carrier and one symbol.

[0231] A bandwidth part (BWP) (which may also be referred to as partial bandwidth, etc.) can also represent a subset of consecutive common RBs (common resource blocks) used for a certain parameter set in a certain carrier. Herein, the common RBs can also be determined by the indexes of the RBs based on the common reference point of the carrier. A PRB can also be defined by a certain BWP and be assigned a serial number within that BWP.

[0232] In a BWP, it can also include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). For a UE, one or more BWPs can also be set within one carrier.

[0233] 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 replaced with "BWP".

[0234] In addition, the structures of the above-mentioned radio frames, subframes, time slots, mini time slots, and symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of time slots per subframe or radio frame, the number of mini time slots included in a time slot, the number of symbols and RBs included in a time slot or mini time slot, the number of subcarriers included in an RB, and the number of symbols, symbol length, cyclic prefix (CP) length, etc. within a TTI can be variously changed.

[0235] In addition, the information, parameters, etc. described in this disclosure can be represented using absolute values, can be represented using relative values with respect to a specific value, or can be represented using corresponding other information. For example, radio resources can also be indicated by a specific index.

[0236] The names used for parameters, etc. in this disclosure are not restrictive names at any point. Furthermore, the arithmetic expressions, etc. using these parameters can also be different from those explicitly disclosed in this disclosure. Various channels (such as PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), etc.) and information elements can be identified by all suitable names, so the various names assigned to these various channels and information elements are not restrictive names at any point.

[0237] The information, signals, etc. described in this disclosure can also be represented using one of various different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that can 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.

[0238] In addition, information, signals, etc. can be output to at least one of the higher layer (upper layer) and 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.

[0239] The information, signals, etc. that are input and output can also be stored in a specific location (e.g., a memory), and can also be managed using a management table. The information, signals, etc. that are input and output can be overwritten, updated, or appended. The information, signals, etc. that are output can also be deleted. The information, signals, etc. that are input can also be sent to other devices.

[0240] The notification of information is not limited to the methods / embodiments described in this disclosure, and other methods can also be used. For example, the notification of information in this disclosure can also be implemented by physical layer signaling (e.g., downlink control information (downlink control information (DCI: Downlink Control Information)), uplink control information (uplink control information (UCI: Uplink Control Information))), higher layer signaling (e.g., RRC (radio resource control (Radio Resource Control)) signaling, broadcast information (master information block (MIB: Master Information Block), system information block (SIB: System Information Block), etc.), MAC (medium access control (Medium Access Control)) signaling), other signals, or a combination thereof.

[0241] In addition, physical layer signaling can also be referred to as L1 / L2 (layer 1 / layer 2 (Layer1 / Layer2)) 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 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 (MACCE (Control Element)).

[0242] In addition, the notification of specific information (e.g., the notification of "is X") is not limited to explicit notification, and can also be made implicitly (e.g., by not making the notification of the specific information or by the notification of other information).

[0243] The determination can also be made by a value represented by 1 bit (0 or 1), can also be made by a true or false value (Boolean value) represented by true or false, and can also be made by a numerical comparison (e.g., comparison with a specific value).

[0244] Regardless of whether software is called software, firmware, middleware, microcode, hardware description language, or is called by other names, it should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes, functions, etc.

[0245] In addition, software, instructions, information, etc. can also be sent and received via a transmission medium. For example, in the case where software is sent from a website, server, or other remote source using at least one of wired technologies (coaxial cables, optical fibers, twisted pairs, digital subscriber lines (DSL), etc.) and wireless technologies (infrared rays, microwaves, etc.), at least one of these wired technologies and wireless technologies is included in the definition of the transmission medium.

[0246] In the present disclosure, terms such as "system" and "network" can be used interchangeably. "Network" can also mean a device (e.g., a base station) included in the network.

[0247] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "quasi-co-location (QCL)", "TCI state (Transmission Configuration Indication 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.

[0248] In the present disclosure, terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", etc. are used interchangeably. A base station is also sometimes referred to by terms such as macro cell, small cell, femto cell, pico cell, etc.

[0249] A base station can accommodate one or more (e.g., three) cells. In the case where a base station accommodates multiple cells, the overall coverage area of the base station can be divided into multiple smaller areas, and each of the smaller areas 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.

[0250] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "user device (User Equipment (UE))", "terminal", etc. are used interchangeably.

[0251] A mobile station is also sometimes referred to as a subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client, or some other appropriate terms.

[0252] 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 on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or non-humanoid). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may also be an IoT (Internet of Things) device such as a sensor.

[0253] In addition, the base station in the present disclosure may be replaced with a user terminal. For example, each mode / embodiment of the present disclosure may be applied to a structure in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (e.g., it may also be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, it may be configured such that the user terminal 20 has the functions of the above-described base station 10. In addition, languages such as "uplink" and "downlink" may also be replaced with languages corresponding to inter-terminal communication (e.g., "side"). For example, an uplink channel, a downlink channel, etc. may also be replaced with a side channel.

[0254] Similarly, the user terminal in the present disclosure may be replaced with a base station. In this case, it may be configured such that the base station 10 has the functions of the above-described user terminal 20.

[0255] In the present disclosure, operations performed by the base station sometimes may be performed by its upper node according to circumstances. In a network including one or more network nodes having a base station, various operations for communicating with a terminal can clearly be performed by the base station, one or more network nodes other than the base station (e.g., considering MME (Mobility Management Entity), S-GW (Serving-Gateway), etc., but not limited to them), or a combination thereof.

[0256] Each mode / embodiment described in the present disclosure can be used alone, in combination, or switched during execution. In addition, as long as there is no contradiction, the processing procedures, timings, flowcharts, etc. of each mode / embodiment described in the present disclosure can be rearranged. For example, for the methods described in the present disclosure, the order of illustration indicates various elements of steps and is not limited to the specific order indicated.

[0257] Each mode / embodiment described in the present disclosure can also be applied to LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New radio access), FX (Future generation radio access), GSM (registered trademark) (Global System for Mobile communications), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, next-generation systems extended based on them, etc. In addition, multiple systems can be combined (e.g., a combination of LTE or LTE-A and 5G, etc.) and applied.

[0258] The description "based on" used in the present disclosure does not mean "only based on" unless otherwise explicitly stated. In other words, the description "based on" means both "only based on" and "at least based on".

[0259] Any reference to an element using designations such as "first", "second", etc. used in this disclosure does not comprehensively limit 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. Thus, the reference to a first and a second element does not mean that only two elements can be employed or that the first element must precede the second element in some form.

[0260] The term "determining" as used in this disclosure sometimes encompasses a variety of operations. For example, "determining" can also be regarded as "determining" a judgment, calculation, computing, processing, deriving, investigating, searching (looking up, retrieving, inquiring) (e.g., searching in a table, database, or other data structure), ascertaining, etc.

[0261] In addition, "determining" can also be regarded as "determining" a reception (e.g., receiving information), transmission (e.g., transmitting information), input, output, accessing (e.g., accessing data in a memory), etc.

[0262] In addition, "determining" can also be regarded as "determining" a resolution, selection, choosing, establishing, comparing, etc. That is to say, "determining" can also be regarded as "determining" certain operations.

[0263] In addition, "determining" can also be replaced by "assuming", "expecting", "considering", etc.

[0264] As used in this disclosure, the terms "connected", "coupled", or any variations thereof, mean any direct or indirect connection or coupling between two or more elements, which can include 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 thereof. For example, "connected" can also be replaced with "accessed".

[0265] In this disclosure, when connecting two elements, it is possible to consider using one or more wires, cables, printed electrical connections, etc., and as some non-limiting and non-inclusive examples, using electromagnetic energy having wavelengths in the wireless frequency domain, microwave domain, optical (both visible and invisible) domain, etc., to be "connected" or "coupled" to each other.

[0266] 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", "coupled", etc. can be interpreted in the same way as "different".

[0267] When the terms "include", "including", and their variations are used in this disclosure, these terms, like the term "comprising", are meant to be inclusive. Furthermore, the term "or" used in this disclosure means not exclusive or.

[0268] In this disclosure, for example, when articles are added due to translation like "a", "an", and "the" in English, this disclosure can also include the nouns following these articles in the plural form.

[0269] 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 clearly not limited to the embodiments described in this disclosure. The invention related to this disclosure can be implemented in modified and changed ways without departing from the spirit and scope of the invention determined based on the description in the claims. Thus, the description of this disclosure is for illustrative purposes and has no restrictive meaning for the invention related to this disclosure.

Claims

1. A terminal, characterized in that, comprising: a control unit that controls the transmission of a plurality of uplink channels during a repetition period based on high-layer signaling including SRS resource set setting information used in a setting of a plurality of measurement reference signal resource sets, i.e., a plurality of SRS resource sets, and downlink control information including an SRS resource index, i.e., an SRI; and a transmission unit that transmits the plurality of uplink channels during the repetition period, wherein the SRS resource set setting information includes information on an SRS resource type and a use of the SRS, wherein the transmission of the plurality of uplink channels is transmission in different beams and is non-codebook-based transmission, and wherein the transmission unit transmits capability information indicating a maximum number of beams that can be simultaneously transmitted for the plurality of uplink channels.

2. A wireless communication method, which is a wireless communication method of a terminal, characterized by: a step of controlling the transmission of a plurality of uplink channels during a repetition period based on high-layer signaling including SRS resource set setting information used in a setting of a plurality of measurement reference signal resource sets, i.e., a plurality of SRS resource sets, and downlink control information including an SRS resource index, i.e., an SRI; and a step of transmitting the plurality of uplink channels during the repetition period, wherein the SRS resource set setting information includes information on an SRS resource type and a use of the SRS, wherein the transmission of the plurality of uplink channels is transmission in different beams and is non-codebook-based transmission, and transmitting capability information indicating a maximum number of beams that can be simultaneously transmitted for the plurality of uplink channels.

3. A base station, characterized in that, comprising: a transmission unit that transmits high-layer signaling including SRS resource set setting information used in a setting of a plurality of measurement reference signal resource sets, i.e., a plurality of SRS resource sets, and downlink control information including an SRS resource index, i.e., an SRI, for a plurality of uplink channels during a repetition period; and a reception unit that receives the plurality of uplink channels during the repetition period, wherein the SRS resource set setting information includes information on an SRS resource type and a use of the SRS, wherein the transmission of the plurality of uplink channels is transmission in different beams and is non-codebook-based transmission, and wherein the reception unit receives capability information indicating a maximum number of beams that can be simultaneously transmitted for the plurality of uplink channels.

4. A system comprising a terminal and a base station, wherein the terminal comprises: A control unit controls transmission of a plurality of uplink channels during a repetition period based on high-layer signaling including SRS resource set setting information used in a setting of a plurality of measurement reference signal resource sets, i.e., a plurality of SRS resource sets, and downlink control information including an SRS resource index, i.e., an SRI; and a transmission unit that transmits the plurality of uplink channels during the repetition period, wherein the SRS resource set setting information includes information on an SRS resource type and a use of the SRS, wherein the transmission of the plurality of uplink channels is transmission in different beams and is non-codebook-based transmission, wherein the base station comprises: a transmission unit that transmits the high-layer signaling and the downlink control information; and a reception unit that receives the plurality of uplink channels.

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