Terminal, wireless communication method, base station and system

Abstract

A terminal according to one embodiment of the present disclosure includes: a control unit that, when receiving a downlink control channel for transmitting downlink control information for scheduling an aperiodic channel state information reference signal (Aperiodic Channel State Information-Reference Signal), i.e., A-CSI-RS, and a scheduling offset between the reception of the A-CSI-RS and the reception of the A-CSI-RS is less than a threshold value determined based on the value of the reported beam switching period, and when there are other downlink signals in the same symbol as the A-CSI-RS and the A-CSI-RS and the other downlink signals are related to the same control resource set (Control Resource Set (CORESET)) pool index, gives priority to the quasi-co-location (Quasi-Co-Location (QCL)) used for the other downlink signals; and a receiving unit that receives the A-CSI-RS. According to one embodiment of the present disclosure, it is possible to appropriately deal with conflicts between multiple channels / signals.

Description

Technical Field

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

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

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

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-patent document 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the invention

[0007] Problems to be solved by the invention

[0008] In the Rel.15 / 16 NR specifications to date, constraints (also referred to as priority rules) are defined to ensure that, in the event of a conflict between multiple channels / signals, the multiple channels / signals belong to the same Quasi-Co-Location (QCL) type D, or to avoid such a situation.

[0009] In addition, in NR, one or more transmission / reception points (Transmission / Reception Point (TRP)) (Multi-TRP (MTRP)) are being studied to perform DL transmission to the UE. In addition, the UE is studying to perform UL transmission to one or more TRPs.

[0010] A UE utilizing MTRP-based control should be able to receive multiple beams (multiple QCL type D channels / signals) simultaneously. For such a UE, the constraints (priority rules) for the conflicts of the above-mentioned multiple channels / signals are considered to be relaxed. However, research has not yet made progress on this constraint in the case where the UE can receive multiple beams (multiple QCL type D channels / signals) simultaneously. If this is not studied, the transmission and reception of the UE will be inappropriately restricted, and there is a concern that throughput will be reduced or communication quality will be degraded.

[0011] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately cope with the collision of multiple channels / signals.

[0012] Means for solving problems

[0013] A terminal involved in one embodiment of the present disclosure comprises: a control unit, which, when receiving a downlink control channel for transmitting downlink control information for scheduling an aperiodic channel state information reference signal (Aperiodic Channel State Information-Reference Signal), i.e., A-CSI-RS, and a scheduling offset between the reception of the A-CSI-RS and the reception of the A-CSI-RS is less than a threshold determined based on the value of the reported period for beam switching, and when there are other downlink signals in the same codeword as the A-CSI-RS and the A-CSI-RS and the other downlink signals are related to the same control resource set (Control Resource Set (CORESET)) pool index, gives priority to the quasi-co-location (Quasi-Co-Location (QCL)) used for the other downlink signals; and a receiving unit, which receives the A-CSI-RS.

[0014] Effects of the Invention

[0015] According to one aspect of the present disclosure, it is possible to appropriately deal with collisions between multiple channels / signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing an example of a priority rule when the PDCCH and PDSCH collide in the existing Rel.16 specification.

[0017] Figure 2 This is a diagram showing an example of an environment of MTRP based on mDCI for explaining the operation of Embodiment 1.1.

[0018] Figure 3A as well as Figure 3B This is a diagram showing an example of a priority rule when the PDCCH and PDSCH involved in Embodiment 1.1 collide.

[0019] Figure 4 This is a diagram showing an example of an environment of MTRP based on sDCI for illustrating the operation of Implementation 1.2.

[0020] Figure 5A as well as Figure 5B This is a diagram showing an example of a priority rule when the PDCCH and PDSCH involved in Embodiment 1.2 collide.

[0021] Figure 6 This is a diagram showing an example of a priority rule when there is a collision between the A-CSI-RS and other DL signals (PDSCH) according to Embodiment 5.2.

[0022] Figure 7 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0023] Figure 8 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0024] Fig. 9 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0025] Fig.10 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION

[0026] (TCI, spatial relationship, QCL)

[0027] In NR, research is being conducted to control the reception processing (e.g., at least one of reception, demapping, demodulation, and decoding) and transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, and coding) of at least one of a signal and a channel (expressed as signal / channel) in the UE based on the transmission configuration indication state (Transmission Configuration Indication state (TCI state)).

[0028] The TCI state may also represent information applied to a downlink signal / channel. Information corresponding to the TCI state applied to an uplink signal / channel may also be expressed as a spatial relation.

[0029] The TCI state is information related to Quasi-Co-Location (QCL) of a signal / channel, and may also be called a spatial reception parameter, spatial relationship information, etc. The TCI state may be set for each channel or each signal to the UE.

[0030] QCL is an indicator of the statistical properties of a signal / channel. For example, it may also mean that when a certain signal / channel is in a QCL relationship with other signals / channels, it can be assumed that at least one of the Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is the same among these different multiple signals / channels (at least one of them is QCL).

[0031] In addition, the spatial reception parameter may also correspond to the reception beam of the UE (eg, reception analog beam), and the beam may also be determined based on the spatial QCL. The QCL (or at least one element of the QCL) in the present disclosure may also be replaced by sQCL (spatial QCL).

[0032] Regarding QCL, multiple types (QCL types) may also be specified. For example, four QCL types AD may be set, and the parameters (or parameter sets) that can be assumed to be the same in the four QCL types AD are different, and the parameters (which may also be referred to as QCL parameters) are expressed as follows:

[0033] QCL Type A (QCL-A): Doppler shift, Doppler spread, average delay, and delay spread,

[0034] QCL type B (QCL-B): Doppler shift and Doppler spread,

[0035] QCL Type C (QCL-C): Doppler shift and average delay,

[0036] QCL type D (QCL-D): spatial reception parameters.

[0037] The situation in which the UE assumes that a certain control resource set (CORESET), channel or reference signal is in a specific QCL (e.g., QCL type D) relationship with other CORESETs, channels or reference signals can also be called QCL assumption.

[0038] The UE may also determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of the signal / channel based on the TCI status or QCL assumption of the signal / channel.

[0039] The TCI state may be, for example, information related to the QCL between the channel being the object (in other words, the reference signal (RS) used for the channel) and other signals (for example, other RS). The TCI state may also be set (indicated) by high-layer signaling, physical layer signaling, or a combination thereof.

[0040] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0041] MAC signaling may also use, for example, MAC Control Element (MAC CE), MAC Protocol Data Unit (MAC Protocol Data Unit (PDU)), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (Other System Information (OSI)), etc.

[0042] The physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI))).

[0043] In addition, the channel / signal that becomes the application object of the TCI state can be called the target channel / reference signal (target channel / RS) or simply referred to as the target, etc., and the other signals mentioned above can be called the reference reference signal (reference RS), source RS (source RS) or simply referred to as reference, etc.

[0044] The channel for which the TCI state or spatial relationship is set (specified) may be, for example, 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)).

[0045] In addition, the RS that is in a QCL relationship with the channel may be, for example, a synchronization signal block (SynchronizationSignal Block (SSB)), a channel state information reference signal (CSI-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a tracking CSI-RS (also called a tracking reference signal (TRS))), a QCL detection reference signal (also called QRS), a demodulation reference signal (DeModulation Reference Signal (DMRS)), etc., at least one of the following.

[0046] The SSB is a signal block including at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)), a secondary synchronization signal (Secondary Synchronization Signal (SSS)), and a broadcast channel (Physical Broadcast Channel (PBCH)). The SSB may also be referred to as an SS / PBCH block.

[0047] The RS of QCL type X in the TCI state may also mean an RS that is in a QCL type X relationship with a certain channel / signal (DMRS), and the RS may also be referred to as a QCL source of QCL type X in the TCI state.

[0048] (Multiple channels / signals conflict)

[0049] In the Rel.15 / 16NR specifications to date, UE can only receive, detect or monitor channels / signals of the same QCL type D at the same time, but cannot receive, detect or monitor multiple channels / signals of different QCL types D at the same time. Therefore, the Rel.15 / 16NR specifications stipulate constraints such as those described below (which may also be referred to as priority rules, QCL application rules, etc.) to ensure that multiple channels / signals belong to the same QCL type D in the event of a conflict between multiple channels / signals (in other words, transmission / reception at overlapping times), or to avoid such a situation.

[0050] In addition, in the present disclosure, the QCL type D (reference RS) of a certain channel / signal is different from the QCL type D (reference RS) of other channels / signals, which may also mean that the beam used in the communication of the certain channel / signal is different from the beam used in the communication of the other channels / signals. In the present disclosure, the QCL type D (reference RS) of a certain channel / signal is different from the QCL type D (reference RS) of other channels / signals, which may also be expressed as the QCL type D of the certain channel / signal is different from that of the other channels / signals, their QCL type D characteristics are different, "QCL type D" is different, etc.

[0051] <PDCCH vs.PDCCH>

[0052] When the UE is configured for single-cell operation or for carrier aggregation operation of the same frequency band, and when PDCCH candidates are monitored in overlapping monitoring opportunities in multiple CORESETs having the same or different QCL type D characteristics in the activated DL BWP of more than one cell, the PDCCH in only one CORESET among the multiple CORESETs and the CORESET having the same QCL type D characteristics as the CORESET is monitored.

[0053] <PDCCH vs. PDSCH>

[0054] When the offset between the reception of DL DCI and the corresponding PDSCH (also referred to as the scheduling offset) is less than a certain threshold (timeDurationForQCL), the UE may also assume that the DMRS port of the PDSCH of a certain serving cell is QCL with the following reference signal, which is a reference signal associated with the QCL parameter for the PDCCH of the CORESET with the smallest CORESET ID (controlResourceSetId) associated with the search space, and the search space is the search space monitored in the latest time slot in which one or more CORESETs within the activated BWP of the serving cell are monitored. In this case, the PDSCH may also be described as following the default TCI state, reference / assumed default QCL, etc.

[0055] In the case where the PDSCH follows the default TCI state, when the "QCL type D (signal)" of the DMRS of the PDSCH is different from the "QCL type D (signal)" ('QCL-TypeD') of the DMRS of the PDCCH that overlaps with the PDSCH in at least one codeword, the UE can also expect to give priority to the reception of the PDCCH associated with the CORESET. In addition, these operations can also be applied in the case of intra-band carrier aggregation (Carrier Aggreation (CA)) (when the above-mentioned PDSCH and the above-mentioned CORESET are located on different component carriers).

[0056] Figure 1 This is a diagram showing an example of the priority rules for PDCCH and PDSCH in the existing Rel.16 specification when they conflict. The PDSCH in this example follows the default TCI state. The left side of the figure shows the scheduled channels / signals, and the right side shows the channels / signals with the result of considering the priority rules (the same in similar figures later).

[0057] In this example, the QCL type D is different for the PDCCH and PDSCH shown in the figure, and some of the code elements overlap. In this case, the UE may also give priority to receiving the PDCCH and not receive (for example, may also discard) the PDSCH (blackened in the figure) that overlaps with the PDCCH. The UE may also receive the PDSCH that does not overlap with the PDCCH.

[0058] <CSI-RS vs. PDCCH>

[0059] With respect to CSI-RS resources associated with a NonZero Power (NZP)-CSI-RS resource set for which a higher layer parameter related to repetition ('repetition') is enabled ('on'), the UE does not assume that the CSI-RS is configured for the codeword configured to monitor the CORESET (i.e., the CORESET and CSI-RS resources in this case do not overlap in time).

[0060] On the other hand, for NZP-CSI-RS resource sets that are not like that ('repetition' is not 'on'), if the UE is set with CSI-RS resources and a search space set associated with the CORESET in the same OFDM symbol, the UE can also assume that the CSI-RS is in QCL with the DMRS of the PDCCH sent in all search space sets associated with the CORESET in a "QCL type D" manner (in the case where "QCL type D" can be applied). In other words, for CSI-RS that is not repeatedly enabled, the UE can also assume that it is the same QCL as the overlapping PDCCH (CORESET). In addition, these operations can also be applied in the case of intra-band CA (when the above-mentioned CSI-RS and the above-mentioned CORESET are located on different component carriers).

[0061] In addition, in the present disclosure, OFDM symbol and codeword may be interchangeable.

[0062] <CSI-RS vs.SSB>

[0063] A UE that has a CSI-RS resource associated with an NZP-CSI-RS resource set in which a high-layer parameter related to repetition ('repetition') is set on the same OFDM symbol as an SS / PBCH block can also assume that the CSI-RS is in QCL with "QCL type D" with the SS / PBCH block (a case where "QCL type D" can be applied). In other words, for a CSI-RS in which a high-layer parameter related to repetition is set, the UE can also assume that it is in the same QCL as the overlapping SS / PBCH block.

[0064] <PDSCH vs.SSB>

[0065] In the case of receiving the SS / PBCH block and the DMRS for the PDSCH in the same OFDM symbol, the UE may also assume that the DMRS and the SS / PBCH block are in the QCL with "QCL type D" (a case where "QCL type D" can be applied). In other words, the UE may also assume that the PDSCH and the overlapping SS / PBCH blocks are in the same QCL.

[0066] <A-CSI-RS vs. other DL signals>

[0067] In the Rel.16NR specification, when the scheduling offset of the aperiodic CSI-RS (A-CSI-RS) is above the threshold determined based on the beam switching timing reported by the UE, the UE can also be expected to apply the QCL assumptions in the indicated TCI states for the aperiodic CSI-RS resources in the CSI triggering state indicated by the CSI trigger field in DCI. That is, in this case, the UE can also receive the A-CSI-RS based on the TCI state specified by the DCI.

[0068] Here, the scheduling offset may also refer to the offset between the last symbol of the PDCCH (or the last time slot containing the PDCCH) that transmits the DCI of the resource set that triggers the A-CSI-RS and the first symbol (or time slot) of the A-CSI-RS resource of the resource set. The unit of the offset may be either symbol or time slot. The information of the scheduling offset of the A-CSI-RS may also correspond to the "aperiodicTriggeringOffset" of the RRC parameter.

[0069] In addition, the beam switching timing reported by the UE (the related UE capabilities) can be called A-CSI-RS beam switching timing (A-CSI-RS beam switching timing), or simply referred to as beam switching timing, beam switching timing (RRC parameter "beamSwitchTiming"), etc.

[0070] The beam switching timing may also take different values ​​for each subcarrier interval (for example, 60 kHz, 120 kHz). The beam switching timing may take values ​​such as 14, 28, 48, 224, 336 symbols, etc.

[0071] The threshold determined based on the beam switching timing can be the reported beam switching timing value, the specific beam switching timing value (for example, 48), or the value obtained by adding a specific offset (for example, an offset taking into account the subcarrier spacing) to them.

[0072] When the scheduling offset of the A-CSI-RS is less than a threshold determined based on the beam switching timing reported by the UE, if there is another DL signal with an indicated TCI state in the same symbol as the A-CSI-RS, the UE may also apply the QCL assumption of the other DL signal when receiving the A-CSI-RS. Since it takes a certain amount of time from demodulating the trigger DCI to switching the UE's receive beam corresponding to the TCI state indicated by the DCI, the specification intends to prevent the situation where there is no time to switch before the reception of the A-CSI-RS.

[0073] In addition, the other DL signals here may also be a PDSCH with a scheduling offset above a specific threshold (UE capability information "timeDurationForQCL") (i.e., the offset from the reception of the DCI to the start of reception of the PDSCH scheduled by the DCI is above the specific threshold), an A-CSI-RS with a scheduling offset above a threshold determined based on the beam switching timing reported by the UE (i.e., other A-CSI-RS), P-CSI-RS, or at least one of SP-CSI-RS.

[0074] timeDurationForQCL may also be defined by the minimum time (eg, number of OFDM symbols) for a UE to receive a PDCCH and apply the spatial QCL information of the PDCCH (DCI) to PDSCH processing.

[0075] timeDurationForQCL can also be called the time length for QCL (time duration), "threshold", "threshold for offset between a DCI indicating a TCI state and a PDSCH scheduled by the DCI", "Threshold-Sched-Offset", scheduling offset threshold, scheduling offset threshold, etc. timeDurationForQCL can take values ​​such as 7, 14, 28 code elements, etc.

[0076] In addition, in the present disclosure, regarding the threshold related to other DL signals, when the other DL signal is A-CSI-RS, it can also be equivalent to the beam switching timing, and when the other DL signal is PDSCH, it can also be equivalent to the value of timeDurationForQCL reported by the UE.

[0077] In addition, the case where the QCL assumption of the above-mentioned other DL signals can be applied to A-CSI-RS can also be limited to the case where the NZP CSI-RS resource set that specifies the A-CSI-RS resource does not have the high-level parameters "trs-Info" and "repetition".

[0078] For an NZP CSI-RS resource set where trs-Info is set to true, the antenna ports of all NZP CSI-RS resources in the resource set may be the same. For an NZP CSI-RS resource set where Repetition is set to off, the UE may not assume that the NZP CSI-RS resources in the resource set are transmitted in the same downlink spatial domain transmit filter.

[0079] In addition, when the scheduling offset of the A-CSI-RS is less than a threshold determined based on the beam switching timing reported by the UE, and there is no other DL signal mentioned above with the indicated TCI state in the same codeword as the A-CSI-RS, and at least one CORESET is set in the BWP for receiving the A-CSI-RS, the UE may also apply the QCL assumption used for the CORESET associated with a monitoredsearch space with the lowest controlResourceSetId in the latest slot in which one or more CORESETs within the active BWP of the serving cell aremonitored when receiving the A-CSI-RS.

[0080] In addition, when the scheduling offset of the A-CSI-RS is less than the beam switching timing reported by the UE, and the above-mentioned other DL signals with the indicated TCI state do not exist in the same codeword as the A-CSI-RS, and thus CORESET is not set in the BWP for receiving the A-CSI-RS, but specific high-level parameters (for example, RRC parameters for activating the default beam (also referred to as enableDefaultBeamForCCS, etc.)) are set, the UE may also apply the QCL assumption of the TCI state corresponding to the following TCI state ID when receiving the A-CSI-RS, where the TCI state ID is the minimum activated TDI state ID that can be applied in the PDSCH of the activation BWP for receiving the A-CSI-RS.

[0081] (Multiple TRP)

[0082] However, in NR, one or more transmission / reception points (Transmission / Reception Point (TRP)) (Multi-TRP (MTRP)) are being studied for DL ​​transmission to the UE. In addition, the UE is studying for UL transmission to one or more TRPs.

[0083] A UE utilizing MTRP-based control should be able to receive multiple beams (multiple QCL type D channels / signals) simultaneously. For such a UE, the constraints (priority rules) for the conflicts of the above-mentioned multiple channels / signals are considered to be relaxed. However, research has not yet made progress on this constraint in the case where the UE can receive multiple beams (multiple QCL type D channels / signals) simultaneously. If this is not studied, the transmission and reception of the UE will be inappropriately restricted, and there is a concern that throughput will be reduced or communication quality will be degraded.

[0084] Therefore, the inventors of the present invention have conceived of control that can appropriately cope with the collision of multiple channels / signals.

[0085] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the embodiments may be applied individually or in combination.

[0086] In addition, in the present disclosure, “A / B” may also mean “at least one of A and B”.

[0087] In the present disclosure, activation, deactivation, indication (or indication), selection, configuration, update, determination, etc. may also be used interchangeably.

[0088] In the present disclosure, RRC, RRC parameter, RRC message, high-layer parameter, information element (IE), and setting may also be replaced with each other. In the present disclosure, MAC CE, update command, and activation / deactivation command may also be replaced with each other. In the present disclosure, support, control, controllable, operation, and operation may also be replaced with each other.

[0089] Furthermore, in the present disclosure, sequences, lists, sets, groups, and the like may be used interchangeably.

[0090] In the present disclosure, panel, beam, panel group, beam group, uplink (UL) transmitting entity, TRP, spatial relationship information (SRI), spatial relationship, control resource set (CORESET), physical downlink shared channel (PDSCH), codeword, base station, specific antenna port (for example, demodulation reference signal (DMRS)) port), specific antenna port group (for example, DMRS port group), specific group (for example, code division multiplexing (CDM)) group, specific reference signal group, CORESET group), specific resource (for example, specific reference signal resource), specific resource set (for example, specific reference signal resource set), CORESET pool, PUCCH group (PUCCH resource group), spatial relationship group, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state (unifiedTCI state), etc. can also be replaced with each other.

[0091] The panel may also be associated with at least one of a group index of an SSB / CSI-RS group, a group index of a group-based beam report, and a group index of an SSB / CSI-RS group of a group-based beam report.

[0092] In addition, the panel identifier (Identifier (ID)) can also be interchanged with the panel. That is, the TRP ID and the TRP, the CORESET group ID and the CORESET group, etc. can also be interchanged with each other.

[0093] In the present disclosure, index, ID, indicator, resource ID, etc. may also be used interchangeably. In the present disclosure, sequence, list, set, group, cluster, subset, etc. may also be used interchangeably.

[0094] In the present disclosure, a UE with multiple TRPs set can also determine at least one of the TRPs corresponding to the DCI, the TRP corresponding to the PDSCH or UL transmission (PUCCH, PUSCH, SRS, etc.) scheduled by the DCI, etc. based on at least one of the following.

[0095] ·The values ​​of specific fields included in the DCI (e.g., the field specifying the TRP, the antenna port field, the PRI).

[0096] DMRS corresponding to the scheduled PDSCH / PUSCH (for example, the DMRS sequence, resources, CDM group, DMRS port, DMRS port group, antenna port group, etc.).

[0097] · The DMRS corresponding to the PDCCH on which the DCI is transmitted (for example, the sequence, resources, CDM group, DMRS port, DMRS port group, etc. of the DMRS).

[0098] The CORESET that received the DCI (e.g., the CORESET pool ID of the CORESET, the ID of the CORESET, the scrambling ID (which may also be replaced by a sequence ID), resources, etc.).

[0099] RS (RS related groups, etc.) used for TCI status, QCL assumptions, spatial relationship information, etc.

[0100] In the present disclosure, a single PDCCH (DCI) may also be referred to as a PDCCH (DCI) of a first scheduling type (e.g., scheduling type A (or type 1)). In addition, a multiple PDCCH (DCI) may also be referred to as a PDCCH (DCI) of a second scheduling type (e.g., scheduling type B (or type 2)).

[0101] In the present disclosure, for single DCI, the i-th TRP (TRP#i) may also refer to the i-th TCI state, the i-th CDM group, etc. (i is an integer). For multi-DCI, the i-th TRP (TRP#i) may also refer to the CORESET corresponding to the CORESET pool index = i, the i-th TCI state, the i-th CDM group, etc. (i is an integer).

[0102] In the present disclosure, it is also conceivable that a single PDCCH is supported when multiple TRPs utilize an ideal backhaul. It is also conceivable that multiple PDCCHs are supported when multiple TRPs utilize a non-ideal backhaul.

[0103] In addition, the ideal backhaul may also be referred to as DMRS port group type 1, reference signal association group type 1, antenna port group type 1, CORESET pool type 1, etc. The non-ideal backhaul may also be referred to as DMRS port group type 2, reference signal association group type 2, antenna port group type 2, CORESET pool type 2, etc. The names are not limited to these.

[0104] In the present disclosure, multiple TRPs, multiple TRP systems, multiple TRP transmissions, and multiple PDSCHs can also be replaced with each other.

[0105] In the present disclosure, single DCI (sDCI), single PDCCH, multi-TRP system based on single DCI, MTRP based on sDCI, and activation of two TCI states on at least one TCI code point can also be replaced with each other.

[0106] In the present disclosure, multi-DCI (mDCI), multi-PDCCH, multi-TRP system based on multi-DCI, MTRP based on mDCI, two CORESET pool indexes or CORESET pool index = 1 (or a value greater than 1) may also be replaced with each other.

[0107] The QCL of the present disclosure can also be interchanged with QCL type D.

[0108] In addition, the following embodiments are described assuming that they are applied when the UE supports simultaneous reception of two or more channels / signals of different QCL types D, but they may also be applied when it is not the case.

[0109] (Wireless Communication Method)

[0110] <First embodiment>

[0111] The first embodiment relates to the collision of PDCCH and PDSCH. The PDCCH and PDSCH in the description of the first embodiment may also mean the PDCCH and PDSCH that overlap each other in terms of time.

[0112] The case of MTRP based on mDCI (embodiment 1.1) and the case of MTRP based on sDCI (embodiment 1.2) are described separately.

[0113] [Implementation method 1.1]

[0114] For mDCI-based MTRP, when the CORESET pool index is set for CORESET, Figure 1 The priority rules shown in may also be applied only to the case where PDCCH and PDSCH are associated with the same CORESET pool index.

[0115] When PDCCH and PDSCH are associated with different CORESET pool indices, no priority rules are required, and a UE capable of simultaneously receiving two different QCL type D channels / signals can also receive both PDCCH and PDSCH associated with these different QCL type D channels / signals.

[0116] In addition, the relationship (association) between the CORESET pool index and the PDSCH can be determined by the UE based on the relationship between the CORESET pool index and the PDCCH that schedules the PDSCH, or based on the relationship between the CORESET pool index and the PDCCH that the PDSCH uses as a reference destination for the QCL (for example, as a reference to the default QCL).

[0117] For example, the UE may determine that the CORESET pool index related to the PDSCH is the CORESET pool index related to the PDCCH that schedules the PDSCH, or may determine that the CORESET pool index related to the PDSCH is the CORESET pool index related to the PDCCH referenced as the default QCL for the PDSCH.

[0118] Figure 2 This is a diagram showing an example of an environment of mDCI-based MTRP for explaining the operation of Implementation 1.1. In this example, the UE uses mDCI-based MTRP using TRP1 and TRP2. TRP1 belongs to CORESET pool index = 0, and TRP2 belongs to CORESET pool index = 1. TRP1 sends PDCCH1 and PDSCH1 to the UE. TRP2 sends PDCCH2 and PDSCH2 to the UE.

[0119] In addition, PDCCH1 is not limited to the PDCCH (DCI) for scheduling PDSCH1, and may also mean any PDCCH transmitted from TRP1. In addition, PDCCH2 is not limited to the PDCCH (DCI) for scheduling PDSCH2, and may also mean any PDCCH transmitted from TRP2.

[0120] Figure 3A as well as Figure 3B FIG. 1 is a diagram showing an example of a priority rule when a PDCCH and a PDSCH involved in Implementation 1.1 collide. Figure 2 As shown, PDCCH1 and PDSCH1 correspond to TRP1 (CORESET pool index = 0), and PDCCH2 and PDSCH2 correspond to TRP2 (CORESET pool index = 1). In addition, PDSCH1 or PDSCH2 in this example follows the default TCI state.

[0121] exist Figure 3A For PDCCH1 and PDSCH1 belonging to the same CORESET pool index, the QCL type D is different and some of the code elements overlap. In this case, the UE receives PDCCH1 first and may not receive PDSCH1 (blackened in the figure) that overlaps with PDCCH1. The UE may also receive the part of PDSCH1 that does not overlap with PDCCH1.

[0122] exist Figure 3B In the case where the QCL type D is different for PDCCH1 and PDSCH2 belonging to different CORESET pool indexes, some symbols overlap. In this case, the UE can also receive PDSCH2 overlapping with PDCCH1 at the same time as PDCCH1.

[0123] [Implementation method 1.2]

[0124] For sDCI-based MTRP, when multiple (e.g., two) TCI states are applied (e.g., indicated by DCI or represented by default QCL) for PDSCH, and when the channel / signal of QCL type D of the DMRS of the PDCCH is the same as the channel / signal of QCL type D of one of the above-mentioned multiple TCI states of the DMRS of the PDSCH, no priority rule is required, and a UE with the simultaneous reception capability of two different QCL type D channels / signals can also receive both the PDCCH and the PDSCH related to these different QCL type D channels / signals.

[0125] In the case where multiple TCI states are applied for the PDSCH, and in the case where the channel / signal of QCL type D of the DMRS of the PDCCH is different from any channel / signal of QCL type D in the above multiple TCI states of the DMRS of the PDSCH, the UE may also follow at least one of the following:

[0126] (1) Prioritize the reception of the PDCCH and do not receive the PDSCH in the symbol overlapping with the PDCCH.

[0127] (2) Prioritize reception of the PDCCH and the PDSCH associated with one of the plurality of TCI states. Do not receive the PDSCH associated with the remaining TCI states in the plurality of TCI states in the symbol overlapping with the PDCCH.

[0128] The preferred TCI state for PDSCH in (2) above may be pre-specified by the specification, may be set / activated to the UE through high-layer signaling (e.g., RRC, MAC CE), or may be determined based on UE capabilities. The preferred TCI state for PDSCH in (2) above may also be a TCI state whose TCI state ID is equivalent to a specific value (e.g., the minimum value, the maximum value) among the above-mentioned multiple TCI states.

[0129] Figure 4 This is a diagram showing an example of an environment of sDCI-based MTRP for explaining the operation of Implementation 1.2. In this example, the UE uses sDCI-based MTRP using TRP1 and TRP2. TRP1 sends PDCCH and PDSCH to the UE. TRP2 sends PDSCH to the UE (scheduled by PDCCH from TRP1).

[0130] In addition, PDCCH1 is not limited to the PDCCH (DCI) used to schedule PDSCH1, but may also mean any PDCCH transmitted from TRP1.

[0131] In the case where the TCI code point of the DCI transmitted via the PDCCH represents a group of more than two TCI states, the UE receives PDSCHs corresponding to different TCI states (e.g., sent from different TRPs) as shown in the figure. In this example, it is assumed that the PDSCH from TRP1 belongs to TCI state 1 and the PDSCH from TRP2 belongs to TCI state 2.

[0132] Figure 5A as well as Figure 5B FIG. 1 is a diagram showing an example of a priority rule when a PDCCH and a PDSCH involved in Implementation 1.2 collide. Figure 4 As shown, the PDCCH and PDSCH1 belonging to TCI state 1 correspond to TRP1, and the PDSCH belonging to TCI state 2 corresponds to TRP2. It is assumed that the QCL type D of the PDCCH is different from the QCL type D of any PDSCH (QCL type D of TCI state 1 and 2). In addition, the PDSCH in this example can follow the default TCI state or not.

[0133] exist Figure 5A In the figure, the PDCCH has different QCL types D for the PDSCH belonging to TCI state 1 and the PDSCH2 belonging to TCI state 2, and some of the symbols overlap. In this case, the UE receives the PDCCH preferentially, and the PDSCHs (blackened in the figure) that overlap with the PDCCH may not be received. The UE may also receive the PDSCHs that do not overlap with the PDCCH.

[0134] exist Figure 5B In the PDCCH, the QCL type D is different for the PDSCH belonging to TCI state 1 and the PDSCH2 belonging to TCI state 2, and some code elements overlap. In this example, it is assumed that the TCI state of the prioritized PDSCH is the TCI state with the largest value of the TCI state ID among the multiple TCI states specified for the PDSCH.

[0135] In this case, the UE receives the PDCCH and the PDSCH belonging to TCI state 2, and may not receive the PDSCH belonging to TCI state 1 (blackened in the figure) overlapping with the PDCCH. The UE may also receive each PDSCH of the part that does not overlap with the PDCCH.

[0136] According to the first embodiment described above, it is possible to appropriately cope with the collision between the PDCCH and the PDSCH.

[0137] <Second embodiment>

[0138] The second embodiment relates to the conflict between CSI-RS and PDCCH (CORESET). The CSI-RS and PDCCH in the description of the second embodiment may also mean CSI-RS and PDCCH that overlap each other in time. The PDCCH of the present disclosure may also be replaced with CORESET.

[0139] The case of MTRP based on mDCI (implementation 2.1) and the case of MTRP based on sDCI (implementation 2.2) are described separately.

[0140] [Implementation method 2.1]

[0141] For mDCI-based MTRP, when a CORESET pool index is set for a CORESET, it is also possible to support directly (explicitly) or indirectly (implicitly) setting the relationship between the CSI-RS resource or NZP-CSI-RS resource set and the CORESET pool index.

[0142] With respect to CSI-RS resources associated with an NZP-CSI-RS resource set for which a higher layer parameter related to repetition ('repetition') is enabled ('on'), the UE may not assume that, for a symbol configured to monitor a CORESET associated with a certain CORESET pool index, the CSI-RS associated with the same CORESET pool index is configured. The CSI-RS resources may also be configured in a symbol overlapping with a CORESET that is a CORESET associated with a different CORESET pool index.

[0143] For a CSI-RS associated with an NZP-CSI-RS resource set for which a higher layer parameter related to repetition ('repetition') is enabled ('on'), the UE may also simultaneously receive the CSI-RS and PDCCH associated with different CORESET pool indices.

[0144] On the other hand, for NZP-CSI-RS resource sets that are not like that ('repetition' is not 'on'), when the CSI-RS and the CORESET are associated with the same CORESET pool index, the UE may also assume that the CSI-RS and the DMRS of the PDCCH sent in all search space sets associated with the CORESET are in QCL with "QCL type D". When the CSI-RS and the CORESET are associated with different CORESET pool indices, it may also be allowed that the CSI-RS and the DMRS of the PDCCH for the CORESET belong to different "QCL types D".

[0145] [Implementation method 2.2]

[0146] For MTRP based on sDCI, the existing priority rules of Rel.16 mentioned above can also be applied in the same way as in the case of single TRP.

[0147] In addition, when the UE supports simultaneous reception of a total of X QCLs (channels / signals), and the total number of different QCLs used for CSI-RS and PDCCH in the same OFDM symbol is less than X, the UE may receive all of the CSI-RS and PDCCH. Otherwise, the UE may not receive all of the CSI-RS and PDCCH. When not receiving all, the UE may discard (or not receive) at least one of a part of the CSI-RS and a part of the PDCCH so that the transmission of different QCLs becomes less than X.

[0148] A UE supporting simultaneous reception of a total of X QCLs (channels / signals) can also assume that there is no case where the total number of different QCLs for CSI-RS and PDCCH in the same OFDM symbol exceeds X.

[0149] In the case where CSI-RS and PDCCH of different QCLs in the same OFDM symbol belong to the same group for the first group-based beam report, the UE may also receive all of the CSI-RS and the PDCCH. Here, the first group-based beam report may also be defined based on the beams of the same group that can be received simultaneously by the UE. The first group-based beam report may also be a group-based beam report for Rel.16 / 17.

[0150] The UE may also assume that the above-mentioned existing priority rule of Rel. 16 is applied to CSI-RS and PDCCH belonging to different groups reported for the first group-based beam.

[0151] In the case where CSI-RS and PDCCH of different QCLs in the same OFDM symbol belong to different groups for the second group-based beam report, the UE may also receive all of the CSI-RS and the PDCCH. Here, the second group-based beam report may also be defined based on the fact that the UE may simultaneously receive beams of different groups. The second group-based beam report may also be a group-based beam report for Rel.17.

[0152] The UE may also assume that the above-mentioned existing priority rule of Rel. 16 is applied to the CSI-RS and PDCCH belonging to the same group for the second group-based beam report.

[0153] According to the second embodiment described above, it is possible to appropriately cope with the collision between the CSI-RS and the PDCCH.

[0154] <Third Embodiment>

[0155] The third embodiment relates to the collision of CSI-RS and SSB. The CSI-RS and SSB in the description of the third embodiment may also mean CSI-RS and SSB that overlap each other in time.

[0156] The case of MTRP based on mDCI (implementation 3.1) and the case of MTRP based on sDCI (implementation 3.2) are described separately.

[0157] [Implementation method 3.1]

[0158] For mDCI-based MTRP, when the CORESET pool index is set for CORESET, it can support direct (explicit) or indirect (implicit) setting of the relationship between the CSI-RS resource or NZP-CSI-RS resource set and the CORESET pool index, and it can also support direct (explicit) or indirect (implicit) setting of the relationship between the SSB and the CORESET pool index.

[0159] When CSI-RS resources are set in the same OFDM symbol as the SSB, and when the CSI-RS and the SSB are related to the same CORESET pool index, the UE can also assume that the CSI-RS and the SSB are in QCL with "QCL type D".

[0160] In addition, when CSI-RS resources are set in the same OFDM codeword as the SSB, and when the CSI-RS and the SSB are related to different CORESET pool indexes, the UE may also assume that there are constraints on QCL type D for the CSI-RS and the SSB (for example, the CSI-RS and the SSB may also be allowed to belong to different "QCL types D").

[0161] In addition, in the present disclosure, the indirect setting of the relationship between a certain channel / signal and a CORESET pool index may also mean, for example, the derivation of the relationship based on the QCL assumption or TCI state. For example, when CORESET #2 belonging to CORESET pool index #1 is set to TCI state #3, SSB #4 is the source reference signal (reference reference signal) of TCI state #3, implicitly indicating that SSB #4 is related to CORESET pool index #1.

[0162] [Implementation method 3.2]

[0163] For MTRP based on sDCI, the existing priority rules of Rel.16 mentioned above can also be applied in the same way as in the case of single TRP.

[0164] In addition, for MTRP based on sDCI, the content after replacing "PDCCH" with "SSB" in Implementation 2.2 may also be used. For example, when the UE supports simultaneous reception of a total of X QCLs (channels / signals), and the total number of different QCLs used for CSI-RS and SSB in the same OFDM symbol is less than X, the UE may also receive all of the CSI-RS and the SSB. Otherwise, the UE may not receive all of the CSI-RS and the SSB.

[0165] According to the third embodiment described above, it is possible to appropriately deal with the collision between CSI-RS and SSB.

[0166] <Fourth embodiment>

[0167] The fourth embodiment relates to the collision of PDSCH and SSB. The PDSCH and SSB in the description of the fourth embodiment may also mean the PDSCH and SSB overlapping each other in time. In the fourth embodiment, the PDSCH may be replaced with the DMRS used for the PDSCH.

[0168] The case of MTRP based on mDCI (implementation 4.1) and the case of MTRP based on sDCI (implementation 4.2) are described separately.

[0169] [Implementation method 4.1]

[0170] For mDCI-based MTRP, when a CORESET pool index is set for a CORESET, it is also possible to support directly (explicitly) or indirectly (implicitly) setting the relationship between the SSB and the CORESET pool index.

[0171] When receiving the DMRS for PDSCH in the same OFDM symbol as the SSB, and when the PDSCH and the SSB are associated with the same CORESET pool index, the UE may also assume that the PDSCH and the SSB are in QCL with "QCL type D".

[0172] In addition, in the case of receiving DMRS for PDSCH in the same OFDM symbol as SSB, and when the PDSCH and the SSB are associated with different CORESET pool indices, the UE can also receive both the PDSCH and the SSB associated with these different QCL type D channels / signals.

[0173] The relationship between the CORESET pool index and the PDSCH may be determined in the same manner as in Implementation 1.1.

[0174] [Implementation method 4.2]

[0175] For sDCI-based MTRP, when multiple (e.g., two) TCI states are applied for PDSCH (e.g., indicated by DCI or represented by default QCL) and when the UE receives DMRS and SSB for PDSCH in the same OFDM codeword, it can also be imagined that a channel / signal of QCL type D of one of the above-mentioned multiple TCI states for the PDSCH is in QCL with the SSB as "QCL type D".

[0176] In other words, the UE may also prioritize the reception of the SSB and the PDSCH associated with one of the multiple TCI states. The UE may also not receive the PDSCH associated with the remaining TCI states in the multiple TCI states in the codewords overlapping with the SSB. The prioritized TCI state for the PDSCH may also be a TCI state in the multiple TCI states whose TCI state ID is equivalent to a specific value (for example, the minimum value, the maximum value).

[0177] According to the fourth embodiment described above, it is possible to appropriately deal with the conflict between the PDSCH and the SSB.

[0178] <Fifth embodiment>

[0179] The fifth embodiment relates to the collision between A-CSI-RS and other DL signals. The A-CSI-RS and other DL signals in the description of the fifth embodiment may also mean A-CSI-RS and other DL signals that overlap with each other in time.

[0180] The A-CSI-RS in the fifth embodiment is equivalent to an A-CSI-RS whose scheduling offset is less than a threshold determined based on the beam switching timing reported by the UE. In addition, the other DL signal in the fifth embodiment is equivalent to the "other DL signal" specified in the existing Rel.15 / 16. In addition, the PDSCH in the fifth embodiment represents a PDSCH equivalent to the other DL signal.

[0181] The case of MTRP based on mDCI (implementation 5.1) and the case of MTRP based on sDCI (implementation 5.2) are described separately.

[0182] [Implementation method 5.1]

[0183] For mDCI-based MTRP, when a CORESET pool index is set for a CORESET, it is also possible to support directly (explicitly) or indirectly (implicitly) setting the relationship between the A-CSI-RS resource or the A-CSI-RS resource set and the CORESET pool index.

[0184] When the A-CSI-RS and other DL signals are related to the same CORESET pool index, the UE may also give priority to the QCL used for the other DL signal (for example, apply the QCL used for the other DL signal to the reception of the A-CSI-RS). If not, the UE may also receive both the A-CSI-RS and the other DL signal of different QCL type D.

[0185] The relationship between the CORESET pool index and the PDSCH may be determined in the same manner as in Implementation 1.1.

[0186] [Implementation method 5.2]

[0187] For sDCI-based MTRP, when multiple (e.g., two) TCI states are applied for PDSCH (e.g., indicated by DCI or represented by default QCL), and when the UE receives DMRS and A-CSI-RS for PDSCH in the same OFDM symbol, the UE may also follow at least one of the following:

[0188] When the QCL type D of the A-CSI-RS is the same as one of the plurality of TCI states, receiving both the A-CSI-RS and the PDSCH,

[0189] When the QCL type D of the A-CSI-RS is different from any of the above-mentioned multiple TCI states, the QCL assumption of the specific TCI state is applied to the reception of the A-CSI-RS and the PDSCH, and the QCL assumptions of the remaining TCI states among the above-mentioned multiple TCI states are applied to the remaining PDSCH reception. The specific TCI state may also be a TCI state among the above-mentioned multiple TCI states whose TCI state ID corresponds to a specific value (for example, a minimum value, a maximum value).

[0190] In addition, for MTRP based on sDCI, the content after replacing "CSI-RS" with "A-CSI-RS" and "PDCCH" with "other DL signals" in Implementation 2.2 may also be used. For example, when the UE supports simultaneous reception of a total of X QCLs (channels / signals), and the total number of different QCLs used for A-CSI-RS and other DL signals in the same OFDM symbol is less than X, the UE may also receive all of the A-CSI-RS and the other DL signals. Otherwise, the UE may not receive all of the A-CSI-RS and the other DL signals.

[0191] Figure 6This is a diagram showing an example of priority rules when there is a conflict between the A-CSI-RS and other DL signals (PDSCH) involved in Implementation 5.2. In this example, the A-CSI-RS has different QCL types D for both PDSCH belonging to TCI state 1 and PDSCH2 belonging to TCI state 2, and some code elements overlap. It is assumed that the QCL type D of the A-CSI-RS is different from the QCL type D of any PDSCH (QCL type D of TCI state 1 and 2). In addition, the PDSCH in this example can follow the default TCI state or not.

[0192] In this example, it is assumed that the above-mentioned specific TCI state (TCI state of the prioritized PDSCH) is the TCI state with the smallest value of the TCI state ID among the multiple TCI states specified for the PDSCH overlapping with the A-CSI-RS.

[0193] In this case, in the symbol where the A-CSI-RS and the PDSCH overlap, the UE applies TCI state 1 for reception of the A-CSI-RS and the PDSCH. In addition, the UE also applies TCI state 2 for reception of the PDSCH.

[0194] In addition, in this example, TCI state 1 is not applied to the A-CSI-RS in the portion that does not overlap with the PDSCH, but it can also be applied.

[0195] According to the fifth embodiment described above, it is possible to appropriately deal with the collision between the A-CSI-RS and other DL signals.

[0196] <Other>

[0197] In the above-mentioned embodiment, the following example is described, that is, when the CORESET pool index is set in the CORESET, the UE assumes the same QCL-D for different channels / RS related to the same CORESET pool index, and assumes different QCL-Ds for different channels / RS related to different CORESET pool indexes.

[0198] In the above-mentioned embodiment, the following example is illustrated, that is, when multiple TCI states are applied to PDSCH, if one of the multiple TCI states and other DL channels / signals belong to the same QCL-D, the UE receives both the PDSCH and the other DL channels / signals, and if not, any one of the TCI states is given priority.

[0199] In addition, at least one of the above-mentioned embodiments may be applied only to UEs that report specific UE capabilities (UE capability) or support the specific UE capabilities.

[0200] The specific UE capability may also represent at least one of the following:

[0201] Whether simultaneous reception is supported,

[0202] Whether it supports simultaneous reception of more than two different QCL Type D channels / signals,

[0203] The number of QCLs used for simultaneous reception in 1 OFDM symbol.

[0204] Regarding the capability of supporting simultaneous reception, it can be defined separately for each of the above-mentioned embodiments, or it can be defined commonly for several embodiments. For example, it can also be defined to indicate the capability of supporting simultaneous reception of any two (which may be the same channels / signals) from PDCCH, PDSCH, CSI-RS, SSB, and A-CSI-RS. In addition, for example, the capability of supporting simultaneous reception related to PDSCH can also indicate support for the processing related to simultaneous reception described in the first embodiment (conflict between PDCCH and PDSCH) and the fourth embodiment (conflict between PDSCH and SSB).

[0205] The capability of the number of QCLs for simultaneous reception in 1 OFDM symbol can be defined for each bandwidth part (Bandwidth Part (BWP)) / each CC (component carrier) / each band, can be defined across all CCs, or can be defined across all bands. When defined across all CCs / all bands, the above-mentioned "1 OFDM symbol" can also be defined with a specific subcarrier spacing (SCS) in mind. The specific SCS can also be, for example, a smaller (or larger) SCS among the SCSs that can be used (or set) in all CCs / all bands, for example, 15kHz.

[0206] In addition, the "CSI-RS", "A-CSI-RS", "SSB", etc. disclosed in the present invention can also be replaced by a radio link monitoring reference signal (Radio Link Monitoring RS (RLM-RS)), a beam failure detection RS (Beam Failure Detection RS (BFD-RS)), an RS for beam management, etc.

[0207] In addition, at least one of the above-mentioned embodiments may also be applied when the UE is configured with specific information associated with the above-mentioned embodiments through high-layer signaling (if not configured, for example, the operation of Rel.15 / 16 is applied). For example, the specific information may also be information indicating activation of different spatial relationships for PUSCH repetition, any RRC parameter for a specific version (for example, Rel.17), etc.

[0208] In addition, the above-mentioned embodiments can be applied when multiple TRPs or multiple panels are set in the UE, or when they are not set.

[0209] (Wireless Communication System)

[0210] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0211] Figure 7 1 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0212] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0213] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0214] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0215] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0216] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0217] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0218] Furthermore, in each CC, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0219] Multiple base stations 10 may also be connected via wired (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station (relay) may also be referred to as an IAB node.

[0220] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0221] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0222] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. may be used.

[0223] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0224] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0225] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like can also be used in the wireless communication system 1.

[0226] User data, high-layer control information, system information block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, master information block (MIB) can also be transmitted through PBCH.

[0227] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0228] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0229] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0230] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be interchangeable.

[0231] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0232] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0233] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0234] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0235] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0236] (Base Station)

[0237] Figure 81 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0238] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0239] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0240] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0241] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0242] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0243] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0244] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0245] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0246] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110 to generate a bit string to be sent.

[0247] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (Discrete Fourier Transform (DFT)) processing (as needed), inverse fast Fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0248] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0249] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0250] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0251] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0252] The transmission path interface 140 can also send and receive signals (return signaling) between devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0253] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0254] In addition, the transmitting and receiving unit 120 may also send at least one of an overlapping downlink shared channel (Physical Downlink Shared Channel (PDSCH)) and a downlink control channel (Physical Downlink Control Channel (PDCCH)) to the user terminal 20 .

[0255] The control unit 110 may also be configured to control the user terminal 20 to receive both the PDSCH and the PDCCH when a specific condition is satisfied.

[0256] In addition, the transmitting and receiving unit 120 may also transmit a downlink control channel (Physical Downlink Control Channel (PDCCH)) to the user terminal 20 in a control resource set (Control Resource Set (CORESET)).

[0257] The control unit 110 may also be assumed to be controlled as follows, that is, the user terminal 20 does not assume that the following CSI-RS resource is set for the codeword set to monitor the CORESET, and the CSI-RS resource is associated with a non-zero power channel state information reference signal (Non Zero Power Channel State Information Reference Signal (NZP-CSI-RS)) resource set with a repeatedly related high-layer parameter enabled, and is related to a CORESET pool index that is the same as the CORESET pool index of the CORESET.

[0258] In addition, the transmitting and receiving unit 120 may also send an aperiodic channel state information reference signal (Aperiodic Channel State Information-Reference Signal (A-CSI-RS)) to the user terminal 20 .

[0259] The control unit 110 can also be imagined as follows: when the reception of the downlink control channel for transmitting downlink control information for scheduling the A-CSI-RS in the user terminal 20 and the scheduling offset between the reception of the A-CSI-RS are less than a threshold determined based on the value of the period for beam switching reported by the user terminal 20, and when there are other downlink signals in the same codeword as the A-CSI-RS and the A-CSI-RS and the other downlink signals are related to the same control resource set (Control Resource Set (CORESET)) pool index, the user terminal 20 gives priority to the quasi-co-location (Quasi-Co-Location (QCL)) for the other downlink signals.

[0260] (User Terminal)

[0261] Fig. 9 2 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. In addition, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided with one or more.

[0262] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0263] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0264] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0265] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0266] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0267] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0268] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0269] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0270] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0271] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0272] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0273] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0274] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0275] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0276] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0277] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0278] In addition, when specific conditions are met, the control unit 210 can also control the reception of both the overlapping downlink shared channel (Physical Downlink Shared Channel (PDSCH)) and the downlink control channel (Physical Downlink Control Channel (PDCCH)).

[0279] When the specific condition is not satisfied, the transmitting / receiving unit 220 may prioritize the reception of the PDCCH.

[0280] Here, the specific condition may also be that the quasi-co-location (QCL) type D of the demodulation reference signal (DeModulationReference Signal (DMRS)) of the PDSCH is different from the QCL type D of the DMRS of the PDCCH, and the PDSCH and the PDCCH are related to different control resource set (Control Resource Set (CORESET)) pool indexes.

[0281] The specific condition may also be that multiple transmission configuration indication states (TCI states) are applied for the PDSCH and the quasi-co-location (QCL) type D of the demodulation reference signal (DeModulation Reference Signal (DMRS)) of the PDCCH is the same as the QCL type D of one of the multiple TCI states.

[0282] When the specific condition is not satisfied, the transmitting and receiving unit 220 may prioritize the reception of the PDCCH and the PDSCH associated with one of the multiple TCI states.

[0283] The transmitting / receiving unit 220 may monitor a downlink control channel (Physical Downlink Control Channel (PDCCH)) in a Control Resource Set (Control Resource Set (CORESET)).

[0284] The control unit 210 may also not assume that the following CSI-RS resource is set for the codeword set to monitor the CORESET, which CSI-RS resource is associated with a non-zero power channel state information reference signal (Non Zero Power Channel State Information Reference Signal (NZP-CSI-RS)) resource set with a repeatedly related high-layer parameter enabled and is related to a CORESET pool index that is the same as the CORESET pool index of the CORESET.

[0285] For the CSI-RS resource associated with the NZP-CSI-RS resource set for which the high-level parameter related to the repetition is disabled and is related to the CORESET pool index that is the same as the CORESET pool index of the CORESET, the control unit 210 can also assume that the CSI-RS resource and the demodulation reference signal (DeModulation Reference Signal (DMRS)) of the PDCCH sent in the entire search space set associated with the CORESET are in QCL with Quasi-Co-Location (QCL) type D.

[0286] When the PDCCH and CSI-RS in the same symbol belong to different quasi-co-locations (QCL) and belong to the same group for the first group-based beam report, the control unit 210 may also receive all of the CSI-RS and the PDCCH.

[0287] When the PDCCH and CSI-RS in the same symbol belong to different quasi-co-locations (QCL) and belong to different groups for the second group-based beam report, the control unit 210 may also receive all of the CSI-RS and the PDCCH.

[0288] In addition, when the reception of a downlink control channel that transmits downlink control information for scheduling an aperiodic channel state information reference signal (Aperiodic Channel State Information-Reference Signal (A-CSI-RS)), and the scheduling offset between the reception of the A-CSI-RS is less than a threshold determined based on the value of the reported period for beam switching, and when there are other downlink signals in the same codeword as the A-CSI-RS and the A-CSI-RS and the other downlink signals are related to the same control resource set (Control Resource Set (CORESET)) pool index, the control unit 210 may also give priority to the quasi-co-location (Quasi-Co-Location (QCL)) used for the other downlink signals.

[0289] The transmitting and receiving unit 220 may also receive the A-CSI-RS.

[0290] (Hardware Structure)

[0291] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0292] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0293] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.10 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0294] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. can be used interchangeably. The hardware structure of the base station 10 and the user terminal 20 can be configured to include one or more of the devices shown in the figure, or to exclude some of the devices.

[0295] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0296] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0297] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0298] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0299] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0300] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0301] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0302] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0303] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0304] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0305] (Variation Example)

[0306] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0307] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0308] Here, the parameter set may also be a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of a subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, a wireless frame structure, a specific filter processing performed by a transmitter and receiver in the frequency domain, a specific windowing processing performed by a transmitter and receiver in the time domain, and the like.

[0309] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0310] A time slot may also include multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0311] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be interchangeable.

[0312] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0313] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0314] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0315] In addition, when a time slot or a mini time slot is called TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0316] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0317] In addition, a long TTI (e.g., normal TTI, subframe, etc.) may be replaced by a TTI having a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) may be replaced by a TTI having a TTI length shorter than that of the long TTI and longer than 1 ms.

[0318] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0319] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0320] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0321] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0322] Bandwidth Part (BWP) (also referred to as partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, common RBs may also be identified by the index of the RB relative to the common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0323] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0324] At least one of the configured BWPs may be activated, and the UE may not assume that it transmits or receives a specific signal / channel other than the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced by "BWP".

[0325] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0326] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0327] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0328] Information, signals, etc. described in this disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0329] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0330] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0331] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB)), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof.

[0332] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0333] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0334] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0335] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0336] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0337] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0338] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0339] In the present disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0340] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0341] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0342] There are also cases where a mobile station is referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or several other appropriate terms.

[0343] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may also be a device carried in a mobile body, a mobile body, etc. The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0344] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0345] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0346] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node (uppernode) depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, considering the Mobility Management Entity (MME)), the Serving-Gateway (S-GW), etc., but not limited to these) or a combination thereof.

[0347] The various methods / implementations described in this disclosure may be used individually or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, sequences, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the methods described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0348] The various modes / implementations described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG)) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems expanded based on them. In addition, multiple systems can also be applied in combination (for example, LTE or LTE-A, combination with 5G, etc.).

[0349] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0350] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0351] The term "determining" used in this disclosure may include a variety of actions. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0352] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0353] In addition, "judgment (decision)" can also be regarded as a situation where resolving, selecting, choosing, establishing, comparing, etc. are regarded as a situation where "judgment (decision)" is performed. That is, "judgment (decision)" can also be regarded as a situation where some actions are regarded as a situation where "judgment (decision)" is performed.

[0354] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0355] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be replaced by "access".

[0356] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0357] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same manner as "different".

[0358] When the terms “include,” “including,” and variations thereof are used in the present disclosure, these terms have an inclusive meaning, similar to the term “comprising.” Furthermore, the term “or” used in the present disclosure does not have an exclusive OR meaning.

[0359] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0360] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

Claims

1. A terminal having: A sending unit, sending capability information, wherein the capability information indicates support for simultaneous reception of quasi-co-location (QCL) type signals for different spatial reception parameters; a control unit for controlling the transmitting unit to transmit the capability information, and giving priority to reception of the one PDCCH when a physical downlink control channel (PDCCH) for scheduling a first physical downlink shared channel (PDSCH) and a second PDSCH, the first PDSCH and the second PDSCH overlap in at least one symbol, and when a QCL type of a spatial reception parameter of a demodulation reference signal (DMRS) for the one PDCCH is different from a QCL type of a spatial reception parameter of a first transmission configuration indication state (TCI state) for the first PDSCH and a QCL type of a spatial reception parameter of a second TCI state for the second PDSCH; and A receiving unit receives the one PDCCH.

2. The terminal according to claim 1, wherein: The control unit controls so that the one PDCCH, the first PDSCH and the second PDSCH overlap in the at least one codeword, and the one PDCCH, the first PDSCH and the second PDSCH are received when the QCL type of the spatial reception parameters of the DMRS for the one PDCCH is the same as the QCL type of the spatial reception parameters for the first TCI state and different from the QCL type of the spatial reception parameters for the second TCI state.

3. The terminal according to claim 2, wherein: The control unit controls the sending unit to send capability information, and receives the one PDCCH and the second PDSCH when the one PDCCH, the first PDSCH and the second PDSCH overlap in the at least one codeword and when the QCL type of the spatial reception parameters of the DMRS for the one PDCCH is the same as the QCL type of the spatial reception parameters for the first TCI state and different from the QCL type of the spatial reception parameters for the second TCI state.

4. A wireless communication method, which is a wireless communication method of a terminal, comprising: The step of sending capability information, wherein the capability information indicates support for simultaneous reception of quasi-co-location (QCL) type signals for different spatial reception parameters; Controlling so that the capability information is transmitted, when a physical downlink control channel (PDCCH) for scheduling a first physical downlink shared channel (PDSCH) and a second PDSCH, the first PDSCH and the second PDSCH overlap in at least one symbol, and when a QCL type of a spatial reception parameter of a demodulation reference signal (DMRS) for the one PDCCH is different from a QCL type of a spatial reception parameter of a first transmission configuration indication state (TCI state) for the first PDSCH and a QCL type of a spatial reception parameter of a second TCI state for the second PDSCH, the reception of the one PDCCH is prioritized; and The step of receiving the one PDCCH.

5. A base station, comprising: A receiving unit receives capability information, wherein the capability information indicates support for simultaneous reception of quasi-co-location (QCL) type signals for different spatial reception parameters; A sending unit, sending a physical downlink control channel (PDCCH) for scheduling a first physical downlink shared channel (PDSCH) and a second PDSCH; as well as A control unit controls the receiving unit to receive the capability information, and when the one PDCCH, the first PDSCH and the second PDSCH overlap in at least one codeword, and when the QCL type of the spatial reception parameter of the demodulation reference signal, i.e., DMRS, for the one PDCCH is different from the QCL type of the spatial reception parameter of the first transmission setting indication state, i.e., TCI state, for the first PDSCH, and the QCL type of the spatial reception parameter of the second TCI state for the second PDSCH, the terminal gives priority to the reception of the one PDCCH.

6. A system comprising a terminal and a base station, The base station has: A sending unit sends a physical downlink control channel (PDCCH) for scheduling a first physical downlink shared channel (PDSCH) and a second PDSCH, The terminal has: A sending unit, sending capability information, wherein the capability information indicates support for simultaneous reception of quasi-co-location (QCL) type signals for different spatial reception parameters; a control unit for controlling the transmitting unit to transmit the capability information, and giving priority to reception of the one PDCCH when the one PDCCH, the first PDSCH, and the second PDSCH overlap in at least one symbol, and when the QCL type of a spatial reception parameter of a demodulation reference signal, i.e., a DMRS, is different from the QCL type of a spatial reception parameter of a first transmission configuration indication state, i.e., a TCI state, for the first PDSCH, and the QCL type of a spatial reception parameter of a second TCI state for the second PDSCH; and A receiving unit receives the one PDCCH.

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