Terminal, Wireless Communication Method, and System

Abstract

A terminal according to an embodiment of this disclosure includes: a controller that determines allocation of a downlink shared channel or a reference signal for the downlink shared channel on the basis of at least one of a cell index, a control resource set pool index, and a group index assigned to a control resource set, which correspond to each of a synchronization signal block and the downlink shared channel; and a receiver that receives at least one of the synchronization signal block and the downlink shared channel.

Description

Technical Field

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

Background Art

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

[0003] Successor systems to LTE (for example, also referred to as 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 considered.

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the specifications of the previous Rel. 15 / 16 NR, in cases where a plurality of channels / signals collide, constraints (which may be called priority rules) are defined to ensure that the plurality of channels / signals belong to the same Quasi-Co-Location (QCL) type D, or to avoid such cases.

[0006] In future wireless communication systems (e.g., wireless communication systems after Rel. 16 / 5G), cases where a plurality of channels / signals collide are also assumed in inter-cell mobility including non-serving cells, or in inter-cell mobility using a plurality of transmission / reception points (e.g., Multi-TRP (MTRP)).

[0007] In such cases, it becomes a problem how to control the conditions applied to a plurality of channels / signals in inter-cell mobility (e.g., Single-TRP inter-cell mobility) / multi-TRP inter-cell mobility (e.g., Multi-TRP inter-cell mobility). If the transmission and reception of channels / signals transmitted from the same cell / TRP or different cells / TRPs are not appropriately performed, there is a risk of throughput reduction or communication quality degradation.

[0008] Therefore, one of the objectives of the present disclosure is to provide a terminal, a wireless communication method, and System that can appropriately control the reception or transmission of channels / signals transmitted from the same cell / TRP or different cells / TRPs.

Means for Solving the Problems

[0009] A terminal according to an aspect of the present disclosure is a synchronization signal Number / Physical Broadcast Channel (SS / PBCH) block lock and physical downlink sharing channel shared channel (PDSCH) isCorrespondingly for the physical cell ID to Based on the above, the PDSCH usage parameters for demodulation of reference demodulation reference signals (DMRS) of control unit that determines the allocation, and the SS / PBCH block and the DMRS for PDSCH receiving unit that receives at least one of them, are has, and when the SS / PBCH block and the PDSCH are transmitted from the same cell, the control unit does not expect to receive the DMRS for the PDSCH in the resource elements overlapping with the resource elements of the SS / PBCH block, and when the SS / PBCH block and the PDSCH are transmitted from different cells, the PDSCH is associated with a Transmission Configuration Indication (TCI) state characterized by the above.

Effect of the Invention

[0010] According to one aspect of the present disclosure, it is possible to appropriately control the reception or transmission of channels / signals transmitted from the same cell / TRP or different cells / TRPs, respectively.

Brief Description of the Drawings

[0011]

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DETAILED DESCRIPTION OF THE INVENTION

[0012] (TCI, Spatial Relationship, QCL) In NR, it is considered to control at least one of signal and channel (expressed as signal / channel) 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 encoding) in a UE based on a Transmission Configuration Indication state (TCI state).

[0013] The TCI state may represent what is applied to downlink signals / channels. What corresponds to the TCI state applied to uplink signals / channels may be expressed as a spatial relation.

[0014] The TCI state is information regarding the Quasi-Co-Location (QCL) of a signal / channel, and may be referred to as spatial reception parameters, Spatial Relation Information, etc. The TCI state may be set for each channel or each signal in the UE.

[0015] QCL is an indicator that shows the statistical properties of a signal / channel. For example, when a certain signal / channel and another signal / channel are in a QCL relationship, it may mean that at least one of Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is the same (QCL for at least one of these) among these different multiple signals / channels.

[0016] Note that the spatial Rx parameter may correspond to the receiving beam of the UE (e.g., receiving analog beam), and the beam may be determined based on spatial QCL. QCL (or at least one element of QCL) in the present disclosure may be read as sQCL (spatial QCL).

[0017] Multiple types (QCL types) of QCL may be defined. For example, four QCL types A - D with different parameters (or parameter sets) that can be assumed to be the same may be provided, and the parameters (which may also be called QCL parameters) are shown below: · QCL type A (QCL - A): Doppler shift, Doppler spread, average delay, and delay spread, · QCL type B (QCL - B): Doppler shift and Doppler spread, · QCL type C (QCL - C): Doppler shift and average delay, · QCL type D (QCL - D): spatial Rx parameter.

[0018] It may be called a QCL assumption that a UE assumes that a certain control resource set (CORESET), channel, or reference signal is in a relationship of a specific QCL (e.g., QCL type D) with another CORESET, channel, or reference signal.

[0019] The UE may determine at least one of the transmission beam (Tx beam) and the reception beam (Rx beam) of the signal / channel based on the TCI state or QCL assumption of the signal / channel.

[0020] The TCI state may be, for example, information regarding the QCL between a target channel (in other words, a reference signal (RS) for the channel) and another signal (e.g., another RS). The TCI state may be set (indicated) by higher layer signaling, physical layer signaling, or a combination thereof.

[0021] In the present disclosure, the higher layer signaling may be, for example, any of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0022] The MAC signaling may use, for example, a MAC control element (MAC CE), a MAC protocol data unit (PDU), etc. The broadcast information may be, for example, a master information block (MIB), a system information block (SIB), remaining minimum system information (RMSI), other system information (OSI), etc.

[0023] Physical layer signaling may be, for example, Downlink Control Information (DCI).

[0024] Note that the channel / signal to which the TCI state is applied may be called the target channel / reference signal (target channel / RS), simply the target, etc., and the other signal may be called the reference reference signal (reference RS), source RS, simply the reference, etc.

[0025] The channel for which the TCI state or spatial relationship is set (specified) may be, for example, at least one of a Physical Downlink Shared Channel (PDSCH), a Physical Downlink Control Channel (PDCCH), a Physical Uplink Shared Channel (PUSCH), and a Physical Uplink Control Channel (PUCCH).

[0026] Also, the RS having a QCL relationship with the channel may be, for example, at least one of a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), a Tracking Reference Signal (also called TRS), a QRS for QCL detection, a DeModulation Reference Signal (DMRS), etc.

[0027] The SSB is a signal block that includes at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). The SSB may be referred to as an SS / PBCH block.

[0028] The RS of QCL type X in a TCI state may mean the RS that is related to a certain channel / signal (its DMRS) and of QCL type X, and this RS may also be referred to as the QCL source of QCL type X in the TCI state.

[0029] (Collision of multiple channels / signals) In the previous Rel. 15 / 16 NR specifications, the UE can only receive, detect, or monitor channels / signals of the same QCL type D at the same time, but receiving, detecting, or monitoring multiple channels / signals of different QCL type D at the same time is not supported. Therefore, in the case where multiple channels / signals collide (in other words, are transmitted / received at overlapping times), constraints (which may also be referred to as priority rules, QCL application rules, etc.) as described below are defined in the Rel. 15 / 16 NR specifications to ensure that the multiple channels / signals belong to the same QCL type D or to avoid such cases.

[0030] In the present disclosure, the fact that the QCL type D (reference RS) of a certain channel / signal is different from the QCL type D (reference RS) of another channel / signal may mean that the beam used for the communication of the certain channel / signal is different from the beam used for the communication of the other channel / signal. In the present disclosure, the fact that the QCL type D (reference RS) of a certain channel / signal is different from the QCL type D (reference RS) of another channel / signal may be expressed as the QCL type D of the certain channel / signal being different from the QCL type D of the other channel / signal, their QCL type D characteristics being different, or the "QCL type D" being different, etc.

[0031] <SSB vs. CSI-RS> When the CSI-RS resource is set in the same OFDM symbol as the SS / PBCH block, if the QCL type D is applied, the UE may expect that the CSI-RS and the SS / PBCH block are in a QCL (quasi co-located) relationship.

[0032] Furthermore, the UE does not expect the CSI-RS to be set in the PRB that overlaps with the resource block (e.g., PRB) of the SS / PBCH block, and may expect the same subcarrier spacing (SCS) to be applied to both the CSI-RS and the SS / PBCH block.

[0033] <SSB vs. PDSCH> When the UE receives the reference signal for PDSCH (e.g., DMRS) and the SS / PBCH block in the same symbol, if the QCL type D is applied, the UE may expect that the DMRS and the SS / PBCH block are in a QCL relationship with "QCL type D" (quasi co-located with QCL-TypeD).

[0034] Furthermore, the UE does not expect to receive DMRS in resource elements that overlap with the resource elements of the SS / PBCH block, and may expect that the same or different subcarrier spacings are set for the DMRS and the SS / PBCH block within a CC (or cell), except for the case of 240 kHz where only different subcarrier spacings are supported.

[0035] For example, the UE may assume that when receiving a PDSCH scheduled with SI-RNTI and the system information indicator of the DCI is set to 0, the SS / PBCH block is not transmitted in the resource elements used for receiving the PDSCH.

[0036] When the UE receives a PDSCH scheduled with SI-RNTI and the system information indicator of the DCI is set to 1, or when receiving a PDSCH scheduled with RA-RNTI, MSGB-RNTI, P-RNTI or TC-RNTI, it may assume the transmission of the SS / PBCH block according to the upper layer parameters (e.g., ssb-PositionsInBurst). Also, when the allocation of the PDSCH resources overlaps with the PRB including the resources for transmitting the SS / PBCH block, the UE may assume that the PRB including the SS / PBCH block transmission resources is not available for the PDSCH in the OFDM symbol where the SS / PBCH block is transmitted.

[0037] When receiving a PDSCH scheduled by a PDCCH scrambled by a C-RNTI, MCS-C-RNTI, or CS-RNTI, or an SPS PDSCH, resource elements corresponding to resources set or dynamically specified under predetermined conditions are not available for the PDSCH. When the PRB containing the SS / PBCH block transmission resource overlaps with the PDSCH resource allocation, the UE may assume that the PRB containing the SS / PBCH block transmission resource is not available for the PDSCh in the OFDM symbol in which the SS / PBCH block is transmitted, and may assume the transmission of the SS / PBCH block according to higher layer parameters (e.g., ssb-PositionsInBurst).

[0038] <PDCCH vs. CSI-RS> Regarding CSI-RS resources related to a non-zero power (NZP)-CSI-RS resource set for which a higher layer parameter related to repetition (e.g., repetition) is on, the UE does not have to assume that CSI-RS is set in a symbol while being set to monitor a CORESET. That is, the CORESET and the CSI-RS resources in this case do not have to overlap in time.

[0039] On the other hand, for other NZP-CSI-RS resource set settings (e.g., when repetition is not on), when the CSI-RS resource and the search space set related to the CORESET are set in the same OFDM symbol, the UE may expect that the DMRS of the PDCCH transmitted in all search space sets associated with the CSI-RS and the CORESET has a QCL relationship of "QCL type D" when QCL type D is applied. This may also be applied when QCL type D is applied and the CSI-RS and the CORESET are in different intra-band component carriers (e.g., different intra-band component carriers).

[0040] Furthermore, the UE may not expect that CSI-RS is configured in the PRBs overlapping with the PRBs of the CORESET in the OFDM symbols occupied by the service space set.

[0041] (Inter-cell mobility) By the way, in NR, it is considered that one or more transmission / reception points (TRPs) (multi-TRP (MTRP)) perform DL transmission to the UE. Also, it is considered that the UE performs UL transmission to one or more TRPs.

[0042] In inter-cell mobility (e.g., L1 / L2 inter cell mobility), the UE may receive channels / signals from multiple cells / TRPs (see FIGS. 1A and 1B).

[0043] FIG. 1A shows an example of inter-cell mobility (e.g., single-TRP inter-cell mobility) including a non-serving cell. Here, it shows the case where the UE receives channels / signals from the base station / TRP of cell #1 serving as the serving cell and the base station / TRP of cell #3 not serving as the serving cell (non-serving cell). For example, it corresponds to the case where the UE switches from cell #1 to cell #3 (e.g., fast cell switch).

[0044] In this case, the update of the TCI state may be performed by DCI / MAC CE, and the selection of the port (e.g., antenna port) / TRP may be performed dynamically. Different physical cell IDs (e.g., PCI) are configured for cell #1 and cell #3.

[0045] Figure 1B shows an example of a multi-TRP scenario (e.g., multi-TRP inter-cell mobility when using multi-TRP). Here, it shows the case where the UE receives channels / signals from TRP#1 and TRP2. Here, it shows the case where TRP#1 is present in cell #1 (PCI#1) and TRP#2 is present in cell #2 (PCI#2).

[0046] The multi-TRP (TRP#1, #2) is connected by an ideal / non-ideal backhaul, and information, data, etc. may be exchanged. Different code words (Code Word (CW)) and different layers may be transmitted from each TRP of the multi-TRP. As a form of multi-TRP transmission, as shown in Figure 1B, Non-Coherent Joint Transmission (NCJT) may be used. Here, it shows the case where NCJT is performed between multiple cells (e.g., cells with different PCIs). Note that the same serving cell setting may be applied / set for TRP#1 and TRP#2.

[0047] In NCJT, for example, TRP#1 modulates and maps the first code word, layer-maps it to the first number of layers (e.g., 2 layers), and uses the first precoding to transmit the first signal / channel (e.g., PDSCH). Also, TRP#2 modulates and maps the second code word, layer-maps it to the second number of layers (e.g., 2 layers), and uses the second precoding to transmit the second signal / channel (e.g., PDSCH).

[0048] The multiple PDSCHs (multi-PDSCH) subject to NCJT may be defined to partially or completely overlap in at least one of the time and frequency domains. That is, the first PDSCH from TRP#1 and the second PDSCH from TRP#2 may overlap in at least one of the time and frequency resources.

[0049] These first PDSCH and second PDSCH may be assumed to be not quasi - co - located in a Quasi - Co - Location (QCL) relationship. The reception of multiple PDSCH may be reinterpreted as the simultaneous reception of PDSCH that is not of a certain QCL type (e.g., QCL type D).

[0050] Multiple PDSCH from multiple TRPs (which may be referred to as multiple PDSCH) may be scheduled using one DCI (single DCI (S - DCI), single PDCCH) (single master mode). One DCI may be transmitted from one TRP of the multiple TRPs. The configuration that utilizes one DCI in multiple TRPs may be referred to as single DCI - based multiple TRPs (mTRP / MTRP).

[0051] Multiple PDSCH from multiple TRPs may be scheduled separately using multiple DCIs (multiple DCI (M - DCI), multiple PDCCH) (multi - master mode). The multiple DCIs may be transmitted from the multiple TRPs respectively. The configuration that utilizes multiple DCIs in multiple TRPs may be referred to as multiple DCI - based multiple TRPs (mTRP / MTRP).

[0052] The UE may be assumed to transmit separate CSI reports (CSI reports) for each respective TRP for different TRPs. Such CSI feedback may be referred to as separate feedback, separate CSI feedback, etc. In the present disclosure, "separate" may be mutually reinterpreted as "independent".

[0053] Thus, in at least one of inter-cell mobility including a non-serving cell and a multi-TRP scenario, the problem is how to control the transmission or reception of channels / signals transmitted from the same cell / TRP or different cells / TRPs. If the transmission and reception of channels / signals transmitted from the same cell / TRP or different cells / TRPs are not appropriately performed, there is a risk of throughput degradation or communication quality deterioration.

[0054] Therefore, the inventors conceived of control for appropriately performing the transmission or reception of a plurality of channels / signals.

[0055] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Each aspect may be applied alone or in combination.

[0056] In the present disclosure, "A / B" may mean "at least one of A and B".

[0057] In the present disclosure, activate, deactivate, indicate (or specify), select, configure, update, determine, etc. may be read interchangeably with each other.

[0058] In the present disclosure, RRC, RRC parameter, RRC message, upper layer parameter, information element (IE), configuration may be read interchangeably with each other. In the present disclosure, MAC CE, update command, activation / deactivation command may be read interchangeably with each other. In the present disclosure, support, control, be able to control, operate, be able to operate may be read interchangeably with each other.

[0059] Also, in the present disclosure, sequence, list, set, group, etc. may be read interchangeably with each other.

[0060] In the present disclosure, a panel, a beam, a panel group, a beam group, an Uplink (UL) transmission entity, a TRP, spatial relation information (SRI), a spatial relation, a Control Resource Set (CORESET), a Physical Downlink Shared Channel (PDSCH), a codeword, a base station, a predetermined antenna port (for example, a Demodulation Reference Signal (DMRS) port), a predetermined antenna port group (for example, a DMRS port group), a predetermined group (for example, a Code Division Multiplexing (CDM) group, a predetermined reference signal group, a CORESET group), a predetermined resource (for example, a predetermined reference signal resource), a predetermined resource set (for example, a predetermined reference signal resource set), a CORESET pool, a PUCCH group (PUCCH resource group), a spatial relation group, a downlink TCI state (DL TCI state), an uplink TCI state (UL TCI state), a unified TCI state, etc. may be read as each other.

[0061] The panel may be related to at least one of a group index of an SSB / CSI-RS group, a group index of a group-based beam report, and a group index of an SSB / CSI-RS group for a group-based beam report.

[0062] Also, a panel Identifier (ID) and a panel may be read as each other. That is, a TRP ID and a TRP, a CORESET group ID and a CORESET group, etc. may be read as each other.

[0063] In the present disclosure, an index, an ID, an indicator, a resource ID may be read as each other. In the present disclosure, a sequence, a list, a set, a group, a cluster, a subset, etc. may be read as each other.

[0064] In the present disclosure, a UE configured with a plurality of TRPs may determine at least one of the following: a TRP corresponding to DCI, a TRP corresponding to a PDSCH or UL transmission (such as PUCCH, PUSCH, SRS, etc.) scheduled by the DCI, etc., based on at least one of the following. · The value of a predetermined field included in the DCI (for example, a field specifying the TRP, an antenna port field, PRI). · The DMRS corresponding to the scheduled PDSCH / PUSCH (for example, the sequence, resource, CDM group, DMRS port, DMRS port group, antenna port group, etc. of the DMRS). · The DMRS corresponding to the PDCCH on which the DCI is transmitted (for example, the sequence, resource, CDM group, DMRS port, DMRS port group, etc. of the DMRS). · The CORESET that received the DCI (for example, the CORESET pool ID of the CORESET, the ID of the CORESET, the scrambling ID (which may be read as a sequence ID), the resource, etc.). · The RS (such as an RS-related group, etc.) used for TCI state, QCL assumption, spatial relationship information, etc.

[0065] In the present disclosure, a single PDCCH (DCI) may be referred to as a PDCCH (DCI) of a first scheduling type (for example, scheduling type A (or type 1)). Also, a multi-PDCCH (DCI) may be referred to as a PDCCH (DCI) of a second scheduling type (for example, scheduling type B (or type 2)).

[0066] In the present disclosure, for a single DCI, the i-th TRP (TRP#i) may mean the i-th TCI state, the i-th CDM group, etc. (i is an integer). For a multi-DCI, the i-th TRP (TRP#i) may mean the CORESET corresponding to the CORESET pool index = i, the i-th TCI state, the i-th CDM group, etc. (i is an integer).

[0067] In the present disclosure, a single PDCCH may be assumed to be supported when multiple TRPs utilize an ideal backhaul. A multi-PDCCH may be assumed to be supported when non-ideal backhaul is utilized among multiple TRPs.

[0068] Note that the ideal backhaul may be referred to as DMRS port group type 1, reference signal related group type 1, antenna port group type 1, CORESET pool type 1, etc. The non-ideal backhaul may be referred to as DMRS port group type 2, reference signal related group type 2, antenna port group type 2, CORESET pool type 2, etc. The names are not limited to these.

[0069] In the present disclosure, multiple TRPs, a multi-TRP system, multi-TRP transmission, and multi-PDSCH may be read interchangeably with each other.

[0070] In the present disclosure, single DCI (sDCI), single PDCCH, a multi-TRP system based on single DCI, sDCI-based MTRP, and activation of two TCI states on at least one TCI code point may be read interchangeably with each other.

[0071] In the present disclosure, multi-DCI (mDCI), multi-PDCCH, a multi-TRP system based on multi-DCI, mDCI-based MTRP, and setting of two CORESET pool indexes or CORESET pool index = 1 (or a value of 1 or more) may be read interchangeably with each other.

[0072] The QCL of the present disclosure may be read interchangeably with QCL type D.

[0073] Note that the following embodiments will be described assuming that the UE supports simultaneous reception of two or more different QCL type D channels / signals, but they may also be applied if not.

[0074] Also, in each of the following aspects, when the UE receives a first signal (or, channel / reference signal) transmitted from a serving cell and a second signal (or, channel / reference signal) transmitted from a non-serving cell, or when the UE receives a first signal and a second signal transmitted from a plurality of TRPs in a serving cell, this will be taken as an example but not limited thereto. It may also be applied to the case where the signals are transmitted from a TRP (or, MTRP) in a non-serving cell.

[0075] (First Aspect) In the first aspect, the transmission control of the synchronization signal block (SSB) and the channel state information reference signal (CSI-RS) will be described.

[0076] The collision handling of the SSB and the CSI-RS in the same time domain may be controlled based on the cell / TRP where the SSB / CSI-RS is transmitted. Note that the handling of the resource collision between the SSB and the CSI-RS (e.g., resource allocation) may be rate-matched and re-read.

[0077] The UE operations in the case of inter-cell mobility (L1 / L2 inter-cell mobility) including non-serving cells (Case 1-1), the multi-DCI based MTRP scenario (Case 1-2), and the single-DCI based MTRP scenario (Case 1-3) will be described below. In the following description, it is assumed that the SSB and the CSI-RS overlap (or, duplicate) in the same time domain (or, at least a part of the time domain), but it may not be limited thereto.

[0078] <Case 1-1> The TCI state may be allowed / supported to be set to a resource RS (e.g., SSB) from a non-serving cell (or a serving cell with a different PCI). In such a case, it may be supported to set an association between the CSI-RS and the non-serving cell (or the SSB from the non-serving cell). The association between the CSI-RS and the non-serving cell (or the SSB from the non-serving cell) may be done directly or un-directly.

[0079] Doing the association directly may mean, for example, that an indication (e.g., PCI or PCI flag) of the serving cell or non-serving cell is set to the SSB / CSI-RS, or to the TCI state corresponding to the SSB / CSI-RS.

[0080] Doing the association un-directly may mean, for example, that when the QCL source RS (e.g., type D RS) of the TCI state for the SSB / CSI-RS is in the serving cell (or is set to the serving cell), the SSB / CSI-RS is associated with the serving cell. Otherwise, it may mean that the SSB / CSI-RS is associated with the non-serving cell.

[0081] FIG. 2A shows an example when the SSB and the CSI-RS are transmitted from the same cell. When the SSB and the CSI-RS are transmitted from the same cell, the UE may not expect the CSI-RS to be set to a PRB overlapping with the resource block (e.g., PRB) of the SSB (condition 1-1-1). Further, when the SSB and the CSI-RS are transmitted from the same cell, the UE may expect the same subcarrier spacing to be applied to both the CSI-RS and the SSB (condition 1-1-2). In the present disclosure, expectation and assumption may be read as each other.

[0082] The same cell may mean between a serving cell and a serving cell, or between a non-serving cell and a non-serving cell. Condition 1-1-1 may be read as the allocation condition of SSB and CSI-RS. Also, regarding Condition 1-1-1, the UE may be read as expecting that CSI-RS is not set in the PRB overlapping with the PRB of the SSB. Condition 1-1-2 may be read as the subcarrier spacing condition applied to SSB and CSI-RS. Similar readings may be applied to other conditions. Also, in the present disclosure, Condition X may be read as Restriction X.

[0083] Figure 2B shows an example when SSB and CSI-RS are transmitted from different cells. Here, it shows the case where the SSB is transmitted from a serving cell and the CSI-RS is transmitted from a non-serving cell, but the SSB may be transmitted from a non-serving cell and the CSI-RS may be transmitted from a serving cell.

[0084] When SSB and CSI-RS are transmitted from different cells (for example, one is a serving cell and the other is a non-serving cell), the UE may apply at least one of the following Option 1-1-1 to Option 1-1-5.

[0085] [Option 1-1-1] Regarding SSB and CSI-RS transmitted from different cells, Conditions 1-1-1 and 1-1-2 may not be applied. For example, regarding SSB and CSI-RS transmitted from different cells, it may be allowed / supported that CSI-RS is set in the PRB overlapping with the PRB of the SSB. Also, it may be allowed / supported that different subcarrier spacings are applied / set to SSB and CSI-RS transmitted from different cells.

[0086] [Option 1-1-2] For SSB and CSI-RS transmitted from different cells, Condition 1-1-1 and Condition 1-1-2 may be applied. For example, the UE may not expect that CSI-RS is set in the PRBs overlapping with the PRBs of the SSB even for SSB and CSI-RS transmitted from different cells. Also, the UE may expect that the same subcarrier spacing is applied / set for SSB and CSI-RS transmitted from different cells.

[0087] [Option 1-1-3] For SSB and CSI-RS transmitted from different cells, only one of the conditions may be applied (for example, Condition 1-1-1 is not applied and Condition 1-1-2 is applied). For example, for SSB and CSI-RS transmitted from different cells, it may be allowed / supported that CSI-RS is set in the PRBs overlapping with the PRBs of the SSB. On the other hand, the UE may expect that the same subcarrier spacing is applied / set for SSB and CSI-RS transmitted from different cells.

[0088] [Option 1-1-4] Based on the cell type (e.g., PCI) from which the SSB and CSI-RS are transmitted, the application of Condition 1-1-1 / Condition 1-1-2 may be controlled. For example, when the SSB is transmitted from the serving cell and the CSI-RS is transmitted from a non-serving cell, Condition 1-1-1 / Condition 1-1-2 may be applied. On the other hand, when the SSB is transmitted from a non-serving cell and the CSI-RS is transmitted from the serving cell, Condition 1-1-1 / Condition 1-1-2 may not be applied.

[0089] [Option 1-1-5] When the SSB is transmitted from a non-serving cell and the CSI-RS is transmitted from the serving cell, Condition 1-1-1 / Condition 1-1-2 may be applied. On the other hand, when the SSB is transmitted from the serving cell and the CSI-RS is transmitted from a non-serving cell, Condition 1-1-1 / Condition 1-1-2 may not be applied.

[0090] In this way, by applying at least one of Option 1-1-1 to Option 1-1-5, even when the SSB and CSI-RS are transmitted from different cells, the UE can determine the resource allocation (e.g., rate matching) and the applicable subcarrier spacing, and appropriately perform the reception process.

[0091] <Case 1-2> In multi-DCI-based MTRP (or mTRP), when a CORESET pool index is set in a control resource set (CORESET), the setting of the association between the SSB / CSI-RS and the CORESET pool index may be supported. The association between the SSB / CSI-RS and the CORESET pool index may be performed directly or un-directly.

[0092] Figure 3A shows an example when the SSB and CSI-RS are associated with the same CORESET pool index (e.g., transmitted from the same TRP). Here, the case where the SSB and CSI-RS are transmitted from TRP#1 is shown.

[0093] Regarding the SSB / CSI-RS associated with a certain CORESET pool index (e.g., the same CORESET pool index), the UE may not expect that the CSI-RS is set in the PRB overlapping with the PRB of the SSB (Condition 1-2-1). Also, the UE may expect that the same subcarrier spacing is applied to both the CSI-RS and the SSB (Condition 1-2-2).

[0094] Figure 3B shows an example when the SSB and CSI-RS are associated with different CORESET pool indexes (e.g., transmitted from different TRPs). Here, the case where the SSB is transmitted from TRP#1 (e.g., corresponding to CORESET pool index 0) and the CSI-RS is transmitted from TRP#2 (e.g., corresponding to CORESET pool index 1) is shown.

[0095] Regarding SSB and CSI-RS associated with different CORESET pool indexes, the UE may apply at least one of the following Options 1-2-1 to 1-2-5.

[0096] [Option 1-2-1] Regarding SSB and CSI-RS corresponding to different CORESET pool indexes, Conditions 1-2-1 and 1-2-2 may not be applied. For example, regarding SSB and CSI-RS corresponding to different CORESET pool indexes, it may be allowed / supported that CSI-RS is set in the PRBs overlapping with the PRBs of the SSB. Also, it may be allowed / supported that different subcarrier spacings are applied / set for SSB and CSI-RS corresponding to different CORESET pool indexes.

[0097] [Option 1-2-2] Regarding SSB and CSI-RS corresponding to different CORESET pool indexes, Conditions 1-2-1 and 1-2-2 may be applied. For example, the UE may not expect that CSI-RS is set in the PRBs overlapping with the PRBs of the SSB even for SSB and CSI-RS corresponding to different CORESET pool indexes. Also, the UE may expect that the same subcarrier spacing is applied / set for SSB and CSI-RS corresponding to different CORESET pool indexes.

[0098] [Option 1-2-3] Regarding SSB and CSI-RS corresponding to different CORESET pool indexes, only one of the conditions may be applied (for example, condition 1-2-1 is not applied and condition 1-2-2 is applied). For example, regarding SSB and CSI-RS corresponding to different CORESET pool indexes, it may be allowed / supported that CSI-RS is set in the PRB overlapping with the PRB of the SSB. On the other hand, the UE may expect that the same subcarrier spacing is applied / set to the SSB and CSI-RS corresponding to different CORESET pool indexes.

[0099] [Option 1-2-4] Based on the CORESET pool indexes to which the SSB and CSI-RS correspond, the application of condition 1-2-1 / condition 1-2-2 may be controlled. For example, when the SSB corresponds to CORESET pool index 0 and the CSI-RS corresponds to CORESET pool index 1, condition 1-2-1 / condition 1-2-2 may be applied. On the other hand, when the SSB corresponds to CORESET pool index 1 and the CSI-RS corresponds to CORESET pool index 0, condition 1-2-1 / condition 1-2-2 may not be applied.

[0100] [Option 1-2-5] When the SSB corresponds to CORESET pool index 1 and the CSI-RS corresponds to CORESET pool index 0, condition 1-2-1 / condition 1-2-2 may be applied. On the other hand, when the SSB corresponds to CORESET pool index 0 and the CSI-RS corresponds to CORESET pool index 1, condition 1-2-1 / condition 1-2-2 may not be applied.

[0101] In this way, by applying at least one of Option 1-2-1 to Option 1-2-5, the UE can appropriately perform reception processing by determining resource allocation (for example, rate matching) and the applied subcarrier spacing even when the SSB and CSI-RS are transmitted from different TRPs.

[0102] <Case 1-3> In the MTRP based on single DCI, the UE may apply at least one of the following Alt.1-3-1 and Alt.1-3-2.

[0103] 《Alt.1-3-1》 In the MTRP based on single DCI, a new group index for the CORESET or a new group index for the channel measurement resource (CMR) setting in the CSI framework may be supported. In such a case, the setting of the association between the SSB / CSI-RS and the new group index may be supported. The association between the SSB / CSI-RS and the new group index may be performed directly or un-directly.

[0104] The new group index indicates the relationship between multiple reference signals / channels, and may indicate whether rate matching (or collision handling) is applicable among the multiple reference signals / channels.

[0105] For example, for the SSB and CSI-RS associated with the same group, the UE may not expect that the CSI-RS is set in the PRB overlapping with the PRB of the SSB (Condition 1-3-1). Further, for the SSB and CSI-RS associated with the same group, the UE may expect that the same subcarrier spacing is applied to both the CSI-RS and the SSB (Condition 1-3-2).

[0106] For the SSB and CSI-RS associated with different group indexes, the UE may apply at least one of the following Option 1-3-1 to Option 1-3-5.

[0107] [Option 1-3-1] For SSB and CSI-RS corresponding to different group indexes, Conditions 1-3-1 and 1-3-2 may not be applicable. For example, for SSB and CSI-RS corresponding to different group indexes, it may be allowed / supported that CSI-RS is configured in the PRBs overlapping with the PRBs of the SSB. Also, for SSB and CSI-RS corresponding to different group indexes, it may be allowed / supported that different subcarrier spacings are applied / configured.

[0108] [Option 1-3-2] For SSB and CSI-RS corresponding to different group indexes, Conditions 1-3-1 and 1-3-2 may be applicable. For example, for SSB and CSI-RS corresponding to different group indexes, the UE may not expect that CSI-RS is configured in the PRBs overlapping with the PRBs of the SSB. Also, the UE may expect that the same subcarrier spacing is applied / configured for SSB and CSI-RS corresponding to different group indexes.

[0109] [Option 1-3-3] For SSB and CSI-RS corresponding to different group indexes, only one of the conditions may be applicable (for example, Condition 1-3-1 is not applicable and Condition 1-3-2 is applicable). For example, for SSB and CSI-RS corresponding to different group indexes, it may be allowed / supported that CSI-RS is configured in the PRBs overlapping with the PRBs of the SSB. On the other hand, the UE may expect that the same subcarrier spacing is applied / configured for SSB and CSI-RS corresponding to different group indexes.

[0110] [Option 1-3-4] Based on the group index corresponding to the SSB and the CSI-RS, the application of Condition 1-3-1 / Condition 1-3-2 may be controlled. For example, when the SSB corresponds to group index 0 and the CSI-RS corresponds to group index 1, Condition 1-3-1 / Condition 1-3-2 may be applied. On the other hand, when the SSB corresponds to group index 1 and the CSI-RS corresponds to group index 0, Condition 1-3-1 / Condition 1-3-2 may not be applied.

[0111] [Option 1-3-5] When the SSB corresponds to group index 1 and the CSI-RS corresponds to group index 0, Condition 1-3-1 / Condition 1-3-2 may be applied. On the other hand, when the SSB corresponds to group index 0 and the CSI-RS corresponds to group index 1, Condition 1-3-1 / Condition 1-3-2 may not be applied.

[0112] 《Alt.1-3-2》 Assume a case where two TCI states are applied to one PDSCH. For example, based on the activation of the TCI state by MAC CE (+ TIC state indication by DCI), or based on the default QCL rule, two TCI states may be set / applied to one PDSCH.

[0113] When two TCI states are activated for a certain code point of the TCI field in the DCI that schedules the PDSCH by MAC CE, the two TCI states may indicate correspondence to different TRPs. In this case, the SSB and the CSI-RS that collide (or overlap) in the time domain are each associated with two TCI states, and a case where the SSB and the CSI-RS are transmitted from different TRPs is also assumed.

[0114] In this case, for the SSB and CSI-RS related to different TCI states among the two TCI states, the UE may apply at least one of the above options 1-3-1 to 1-3-5. For example, in options 1-3-1 to 1-3-5, the group index may be simply read as the TCI state index.

[0115] In this way, by applying at least one of options 1-3-1 to 1-3-5, even when the SSB and CSI-RS are transmitted from different TRPs, the UE can determine the resource allocation (e.g., rate matching) and the applicable subcarrier spacing and appropriately perform the reception process.

[0116] As shown in the first aspect, when the SSB and CSI-RS are transmitted from different cells / TRPs, the same allocation conditions (e.g., rate matching process) / subcarrier spacing conditions applied when the SSB and CSI-RS are transmitted from the same cell can be applied, and the process can be simplified. Alternatively, when the SSB and CSI-RS are transmitted from different cells / TRPs, by allowing the application of at least partially different allocation conditions (e.g., rate matching process) / subcarrier spacing conditions applied when the SSB and CSI-RS are transmitted from the same cell, the transmission of the SSB and CSI-RS can be flexibly controlled.

[0117] (Second aspect) In the second aspect, the transmission control of the synchronization signal block (SSB) and the downlink shared channel (PDSCH) will be described.

[0118] The collision handling of the SSB and PDSCH in the same time domain may be controlled based on the cell / TRP where the SSB / PDSCH is transmitted. Note that the handling of the resource collision between the SSB and PDSCH may be rate matching and re-reading.

[0119] The UE operations in the case of inter-cell mobility (L1 / L2 inter-cell mobility) including non-serving cells (Case 2-1), the multi-DCI-based MTRP scenario (Case 2-2), and the single-DCI-based MTRP scenario (Case 2-3) will be described below. In the following description, it is assumed that SSBs and PDSCHs overlap (or duplicate) in the same time domain (or at least part of the time domain), but it may not be limited to this.

[0120] <Case 2-1> It may be allowed / supported that the TCI state is set with a resource RS (e.g., SSB) from a non-serving cell (or a serving cell with a different PCI).

[0121] Figure 4A shows an example when the SSB and PDSCH are transmitted from the same cell. When the SSB and PDSCH (e.g., associated with the TCI state) are transmitted from the same cell, at least one (e.g., all) of the following Conditions 2-1-1 to 2-1-4 may be applied. The same cell may mean between a serving cell and a serving cell, or between a non-serving cell and a non-serving cell.

[0122] <Condition 2-1-1> The UE may not be expected to receive the DMRS for the PDSCH in the resource element that overlaps with the resource element of the SSB. Regarding Condition 2-1-1, it may be read as that the UE may be expected not to receive the DMRS for the PDSCH in the resource element that overlaps with the resource element of the SSB.

[0123] <Condition 2-1-2> The UE may be expected that the same subcarrier spacing or different subcarrier spacings are set for the DMRS of the CC (or cell) and the SSB, except for a predetermined case (e.g., 240 kHz) where only different subcarrier spacings are supported.

[0124] <Condition 2-1-3> For a specific PDSCH scheduled with SI-RNTI, the UE may assume that no SSB is transmitted in the resource elements used for receiving the PDSCH.

[0125] <Condition 2-1-4> For a specific PDSCH, if the resource allocation of the PDSCH overlaps with the PRB including the transmission resource of the SSB, the UE may assume that the PRB including the transmission resource of the SSB is not available for the PDSCH in the OFDM symbol in which the SSB is transmitted.

[0126] In Condition 2-1-4, the PDSCH may be applied to a PDSCH scheduled by a PDCCH scrambled with CRC using C-RNTI, MCS-C-RNTI, CS-RNTI, or a PDSCH to which SPS is applied.

[0127] In Condition 2-1-4, when receiving a PDSCH scheduled with SI-RNTI (where the system information indication of the DCI is set to 1), RA-RNTI, MSGB-RNTI, P-RNTI, or TC-RNTI, the UE may be configured to assume SSB transmission according to a predetermined upper layer parameter (e.g., ssb-PositionsInBurst).

[0128] Figure 4B shows an example when the SSB and the PDSCH are transmitted from different cells. Here, it shows the case where the SSB is transmitted from the serving cell and the PDSCH is transmitted from a non-serving cell, but the SSB may be transmitted from a non-serving cell and the PDSCH may be transmitted from the serving cell.

[0129] For an SSB and a PDSCH (associated with a TCI state) transmitted from different cells (e.g., one is a serving cell and the other is a non-serving cell), or for a specific case, a configuration may be adopted where none of the above Conditions 2-1-1 to 2-1-4 apply.

[0130] Alternatively, for the SSB and PDSCH (associated with TCI states) transmitted from different cells (for example, one is a serving cell and the other is a non-serving cell), or for a specific case, at least one (or a plurality / all) of the above conditions 2-1-1 to 2-1-4 may be applied.

[0131] The specific case may be, for example, a case where the SSB is transmitted from the serving cell and the PDSCH is transmitted from the non-serving cell, or a case where the SSB is transmitted from the non-serving cell and the PDSCH is transmitted from the serving cell.

[0132] <Case 2-2> In the MTRP based on multi-DCI, assume a case where a CORESET pool index is set in a control resource set (CORESET).

[0133] Figure 5A shows an example of a case where the SSB and PDSCH are associated with the same CORESET pool index (for example, transmitted from the same TRP). Here, a case where the SSB and CSI-RS are transmitted from TRP#1 is shown.

[0134] For the SSB and PDSCH (associated with TCI states) associated with a certain CORESET pool index (for example, the same CORESET pool index), the UE may apply the conditions / restrictions shown in the above <SSB vs. PDSCH>.

[0135] Figure 5B shows an example of a case where the SSB and PDSCH are associated with different CORESET pool indexes (for example, transmitted from different TRPs). Here, a case where the SSB is transmitted from TRP#1 (for example, corresponding to CORESET pool index 0) and the PDSCH is transmitted from TRP#2 (for example, corresponding to CORESET pool index 1) is shown.

[0136] For the SSB and PDSCH (associated with the TCI state) corresponding to different CORESET pool indexes, or for a specific case, a configuration may be adopted where none of the above Conditions 2-1-1 to 2-1-4 apply.

[0137] Alternatively, for the SSB and PDSCH (associated with the TCI state) corresponding to different CORESET pool indexes, or for a specific case, at least one (or multiple / all) of the above Conditions 2-1-1 to 2-1-4 may be applied.

[0138] A specific case may be, for example, a case where the SSB is associated with CORESET pool index 0 and the PDSCH is associated with CORESET pool index 1, or a case where the SSB is associated with CORESET pool index 1 and the PDSCH is associated with CORESET pool index 0.

[0139] <Case 2-3> In MTRP based on single DCI, the UE may apply at least one of the following Alt.2-3-1 and Alt.2-3-2.

[0140] 《Alt.2-3-1》 In MTRP based on single DCI, a new group index for the CORESET or a new group index for the channel measurement resource (CMR) setting in the CSI framework may be supported.

[0141] The new group index indicates the relationship between multiple reference signals / channels, and may indicate whether rate matching (or collision handling) is applicable among the multiple reference signals / channels.

[0142] For example, for SSB and PDSCH (associated with TCI states) associated with the same group index, the UE may apply the conditions / restrictions shown in <SSB vs. PDSCH> described above.

[0143] For SSB and PDSCH (associated with TCI states) associated with different group indexes, or for a specific case, it may be configured such that none of the above Conditions 2-1-1 to 2-1-4 are applicable.

[0144] Alternatively, for SSB and PDSCH (associated with TCI states) associated with different group indexes, or for a specific case, at least one (or a plurality / all) of the above Conditions 2-1-1 to 2-1-4 may be applied.

[0145] A specific case may be, for example, a case where the SSB is associated with group index 0 and the PDSCH is associated with group index 1, or a case where the SSB is associated with group index 1 and the PDSCH is associated with group index 0.

[0146] 《Alt.2-3-2》 Assume that two TCI states are applied to one PDSCH. For example, based on the activation of the TCI state by MAC CE (+ TIC state indication by DCI), or based on the default QCL rule, two TCI states may be set / applied to one PDSCH.

[0147] When two TCI states (e.g., TCI#1 and TCI#3) are activated for a certain code point of the TCI field in the DCI that schedules the PDSCH by MAC CE, it may be indicated that the two TCI states correspond to different TRPs. In this case, a case where the SSB and PDSCH that collide in the time domain are transmitted from different TRPs (e.g., when the SSB corresponds to TCI#1 and the PDSCH corresponds to TCI#3) is also assumed.

[0148] In this case, for the SSB and PDSCH associated with different TCI states, or for a specific case, a configuration may be adopted in which none of the above conditions 2-1-1 to 2-1-4 are applicable.

[0149] Alternatively, for the SSB and PDSCH associated with different TCI states, or for a specific case, at least one (or a plurality / all) of the above conditions 2-1-1 to 2-1-4 may be applied.

[0150] The specific case may be, for example, a case where the SSB is associated with the first TCI state and the PDSCH is associated with the second TCI state among two TCI states.

[0151] As shown in the second aspect, when the SSB and PDSCH are transmitted from different cells / TRPs, the same allocation conditions (e.g., rate matching processing) / subcarrier interval conditions applied when the SSB and PDSCH are transmitted from the same cell may be applied, and the processing can be simplified. Alternatively, when the SSB and PDSCH are transmitted from different cells / TRPs, by allowing the application of at least partially different allocation conditions (e.g., rate matching processing) / subcarrier interval conditions applied when the SSB and PDSCH are transmitted from the same cell, the transmission of the SSB and PDSCH can be flexibly controlled.

[0152] (The third aspect) In the third aspect, the transmission control of the PDCCH and the channel state information reference signal (CSI-RS) will be described.

[0153] For example, the collision handling of the PDCCH and CSI-RS in the same time domain may be controlled based on the cell / TRP where the PDCCH / CSI-RS is transmitted. Note that the handling of the resource collision between the PDCCH and CSI-RS may be rate matched and re-read.

[0154] The UE operations in the case of inter-cell mobility (L1 / L2 inter-cell mobility) including non-serving cells (Case 3-1), the multi-DCI based MTRP scenario (Case 3-2), and the single-DCI based MTRP scenario (Case 3-3) are described below. In the following description, it is assumed that PDCCH and CSI-RS overlap (or duplicate) in the same time domain (or at least part of the time domain), but it is not limited thereto.

[0155] <Case 3-1> It may be allowed / supported that the TCI state is set to the resource RS (e.g., SSB) from a non-serving cell (or a serving cell with a different PCI). In such a case, it may be supported to set the association between the CSI-RS and the non-serving cell (or the PDCCH from the non-serving cell). The association between the CSI-RS and the non-serving cell (or the PDCCH from the non-serving cell) may be done directly or un-directly.

[0156] When the association is done directly, for example, an indication (e.g., PCI or PCI flag) of the serving cell or non-serving cell may be set to the PDCCH / CSI-RS or the TCI state corresponding to the PDCCH / CSI-RS.

[0157] When the association is done un-directly, for example, when the QCL source RS (e.g., type D RS) of the TCI state for the PDCCH / CSI-RS is in the serving cell (or is set to the serving cell), it may mean that the PDCCH / CSI-RS is associated with the serving cell. Otherwise, it may mean that the PDCCH / CSI-RS is associated with the non-serving cell.

[0158] Fig. 6A shows an example when CSI-RS and PDCCH are transmitted from the same cell. When CSI-RS and PDCCH (associated with a TCI state) are transmitted from the same cell, at least one (for example, all) of the following Conditions 3-1-1 to 3-1-2 may be applicable to the UE. The same cell may mean between a serving cell and a serving cell, or between a non-serving cell and a non-serving cell.

[0159] <Condition 3-1-1> For a CSI-RS resource associated with a non-zero power CSI-RS (e.g., NZP-CSI-RS-ResourceSet) for which a predetermined upper layer parameter (e.g., repetition) is set to on, the UE may not expect CSI-RS to be set in a symbol while it is set to monitor a CORESET (e.g., during a predetermined symbol period). In other words, the UE may assume that CSI-RS is not set in a symbol while it is set to monitor a CORESET.

[0160] <Condition 3-1-2> The UE may not expect CSI-RS to be set in a PRB overlapping with the PRB of the CORESET in an OFDM symbol occupied by a search space set. In other words, the UE may assume that CSI-RS is not set in a PRB overlapping with the PRB of the CORESET in an OFDM symbol occupied by a search space set.

[0161] Fig. 6B shows an example when CSI-RS and PDCCH are transmitted from different cells. Here, it shows the case where PDCCH is transmitted from a serving cell and CSI-RS is transmitted from a non-serving cell, but PDCCH may be transmitted from a non-serving cell and CSI-RS may be transmitted from a serving cell.

[0162] For CSI-RS and PDCCH (associated with TCI states) transmitted from different cells (e.g., one is a serving cell and the other is a non-serving cell), or for a specific case, a configuration may be adopted where none of the above Conditions 3-1-1 to 3-1-2 apply.

[0163] Alternatively, for CSI-RS and PDCCH (associated with TCI states) transmitted from different cells (e.g., one is a serving cell and the other is a non-serving cell), or for a specific case, at least one (or either / both) of the above Conditions 3-1-1 to 3-1-2 may be applied.

[0164] The specific case may be, for example, a case where CSI-RS is transmitted from a serving cell and PDCCH is transmitted from a non-serving cell, or a case where CSI-RS is transmitted from a non-serving cell and PDCCH is transmitted from a serving cell.

[0165] <Case 3-2> In MTRP based on multi-DCI, when a CORESET pool index is set for a control resource set (CORESET), the setting of the association between CSI-RS and the CORESET pool index may be supported. The association between CSI-RS and the CORESET pool index may be done directly or un-directly.

[0166] Figure 7A shows an example where CSI-RS and PDCCH are associated with the same CORESET pool index (e.g., transmitted from the same TRP). Here, the case where CSI-RS and PDCCH are transmitted from TRP#1 is shown.

[0167] For CSI-RS and PDCCH (associated with TCI states) associated with a certain CORESET pool index (e.g., the same CORESET pool index), the UE may apply the conditions / restrictions shown in <PDCCH vs. CSI-RS> described above.

[0168] Figure 7B shows an example where CSI-RS and PDCCH are associated with different CORESET pool indexes (e.g., transmitted from different TRPs). Here, it shows the case where PDCCH is transmitted from TRP#1 (e.g., corresponding to CORESET pool index 0) and CSI-RS is transmitted from TRP#2 (e.g., corresponding to CORESET pool index 1).

[0169] For CSI-RS and PDCCH (associated with TCI states) corresponding to different CORESET pool indexes, or for a specific case, it may be configured such that none of the above conditions 3-1-1 to 3-1-2 are applied.

[0170] Alternatively, for CSI-RS and PDCCH (associated with TCI states) corresponding to different CORESET pool indexes, or for a specific case, at least one (or either / both) of the above conditions 3-1-1 to 3-1-2 may be applied.

[0171] A specific case may be, for example, a case where CSI-RS is associated with CORESET pool index 0 and PDCCH is associated with CORESET pool index 1, or a case where CSI-RS is associated with CORESET pool index 1 and PDCCH is associated with CORESET pool index 0.

[0172] <Case 3-3> In MTRP based on single DCI, the UE may apply at least one of the following Alt.3-3-1 and Alt.3-3-2.

[0173] 《Alt.3-3-1》 In the MTRP based on single DCI, a new group index for the CORESET or a new group index for the setting of a channel measurement resource (CMR) in the CSI framework may be supported. In such a case, the setting of the association between the CSI-RS and the new group index may be supported. The association between the CSI-RS and the new group index may be performed directly or un-directly.

[0174] The new group index indicates the relationship between a plurality of reference signals / channels, and may indicate whether rate matching (or collision handling) is applicable among the plurality of reference signals / channels.

[0175] For example, for the CSI-RS and PDCCH associated with the same group index, the UE may apply the conditions / restrictions shown in <PDCCH vs. CSI-RS> described above.

[0176] For the CSI-RS and PDCCH associated with different group indexes, or for a specific case, a configuration may be adopted in which none of the above Conditions 3-1-1 to 3-1-2 is applicable.

[0177] Alternatively, for the CSI-RS and PDCCH associated with different group indexes, or for a specific case, at least one (or either / both) of the above Conditions 3-1-1 to 3-1-2 may be applied.

[0178] A specific case may be, for example, a case where CSI-RS is associated with group index 0 and PDCCH is associated with group index 1, or a case where CSI-RS is associated with group index 1 and PDCCH is associated with group index 0.

[0179] 《Alt.3-3-2》 Assume a case where two TCI states are applied to one PDSCH. For example, based on the activation of the TCI state by MAC CE (+ TIC state indication by DCI), or based on the default QCL rule, two TCI states may be set / applied to one PDSCH.

[0180] When two TCI states (for example, TCI#1 and TCI#3) are activated for a certain code point of the TCI field in the DCI that schedules the PDSCH by MAC CE, it may be indicated that the two TCI states correspond to different TRPs. In this case, a case where CSI-RS and PDCCH that collide in the time domain are transmitted from different TRPs (for example, when CSI-RS corresponds to TCI#1 and PDCCH corresponds to TCI#3) is also assumed.

[0181] In this case, for CSI-RS and PDCCH associated with different TCI states, or for a specific case, it may be configured that none of the above conditions 3-1-1 to 3-1-2 are applied.

[0182] Alternatively, for CSI-RS and PDCCH associated with different TCI states, or for a specific case, at least one (or either / both) of the above conditions 3-1-1 to 3-1-2 may be applied.

[0183] A specific case may be, for example, a case where among two TCI states, CSI-RS is associated with the first TCI state and PDCCH is associated with the second TCI state.

[0184] As shown in the third aspect, when the CSI-RS and the PDCCH are transmitted from different cells / TRPs, the processing can be simplified by applying the same allocation conditions (e.g., rate matching processing) / subcarrier spacing conditions as those applied when the CSI-RS and the PDCCH are transmitted from the same cell. Alternatively, when the CSI-RS and the PDCCH are transmitted from different cells / TRPs, the transmission of the CSI-RS and the PDCCH can be flexibly controlled by allowing the application of at least partially different allocation conditions (e.g., rate matching processing) / subcarrier spacing conditions from those applied when the CSI-RS and the PDCCH are transmitted from the same cell.

[0185] (Fourth Aspect) In the fourth aspect, the transmission control of the SSB and the PDCCH will be described.

[0186] For example, the collision handling between the PDCCH and the CSI-RS in the same time domain may be controlled based on the cell / TRP from which the PDCCH / CSI-RS is transmitted. Note that the handling of the resource collision between the PDCCH and the CSI-RS may be replaced by rate matching.

[0187] Assume a case where the SSB and the PDCCH are transmitted from the same cell (see FIG. 8A), or a case where the SSB and the PDCCH are transmitted from the same TRP (e.g., multi-DCI-based MTRP / single-DCI-based MTRP) (see FIG. 9A). FIG. 9A shows an example of a case where the SSB and the PDCCH are associated with the same CORESET pool index (e.g., transmitted from the same TRP).

[0188] When the SSB and the PDCCH are transmitted from the same cell / TRP, the UE may assume that the PRBs / resource elements including the transmission resources of the SSB are not used for the PDCCH / PDCCH DMRS (Condition 4-1).

[0189] When the SSB and the PDCCH are transmitted from different cells (see FIG. 8B), when the SSB and the PDCCH are transmitted from different TRPs (see FIG. 9B), or in a specific case, the above condition 4-1 may be applied to the SSB and the PDCCH.

[0190] In FIG. 8B, a case where the SSB is transmitted from the serving cell and the PDCCH is transmitted from a non-serving cell is shown, but the SSB may be transmitted from a non-serving cell and the PDCCH may be transmitted from the serving cell. FIG. 9B shows an example of a case where the SSB and the PDCCH are associated with different CORESET pool indexes (for example, transmitted from different TRPs).

[0191] Alternatively, when the SSB and the PDCCH are transmitted from different cells, when the SSB and the PDCCH are transmitted from different TRPs, or in a specific case, the SSB and the PDCCH may be configured such that the above condition 4-1 is not applied.

[0192] The specific case may be, for example, a case where the SSB is transmitted from the first cell / first TRP and the PDCCH is transmitted from the second cell / second TRP, or a case where the SSB is transmitted from the second cell / second TRP and the PDCCH is transmitted from the first cell / first TRP.

[0193] The UE may apply the above condition 4-1 in at least one of the following cases 4-1 to 4-5 in monitoring the PDCCH candidates (for example, PDCCH candidate). Alternatively, the UE may be controlled not to apply the above condition 4-1 in at least one of the following cases 4-1 to 4-5 in monitoring the PDCCH candidates (for example, PDCCH candidate).

[0194] [Case 4-1] If the UE satisfies the following Conditions 4-1-1 to 4-1-3 for monitoring PDCCH candidates, monitoring of PDCCH candidates may not be required (or there is no need to monitor PDCCH candidates). · When the UE receives a predetermined parameter (e.g., ssb-PositionsInBurst) included in SIB1 and does not receive a higher-layer parameter for the serving cell (e.g., ssb-PositionsInBurst in ServingCellConfigCommon) (Condition 4-1-1) · When the UE does not monitor PDCCH candidates within a predetermined common service space set (e.g., Type0-PDCCH CSS set) (Condition 4-1-2) · When at least one resource element for a PDCCH candidate overlaps with at least one resource element of an SSB candidate corresponding to the SSB index provided by a predetermined parameter (e.g., ssb-PositionsInBurst) included in SIB1 (Condition 4-1-3)

[0195] For example, in the above Conditions 4-1-1 to 4-1-3, when the SSB and the PDCCH are transmitted from different cells / different TRPs, the UE may assume that the PRB / resource element including the transmission resource of the SSB is not used for the PDCCH / PDCCH DMRS.

[0196] Alternatively, in the above Conditions 4-1-1 to 4-1-3, when the SSB and the PDCCH are transmitted from different cells / different TRPs, it may be allowed that the PRB / resource element including the transmission resource of the SSB is used for the PDCCH / PDCCH DMRS.

[0197] [Case 4-2] If the UE satisfies the following Conditions 4-2-1 to 4-2-3 for monitoring PDCCH candidates, monitoring of PDCCH candidates may not be required (or there is no need to monitor PDCCH candidates). · When the UE receives upper layer parameters for the serving cell (e.g., ssb-PositionsInBurst in ServingCellConfigCommon) (Condition 4-2-1) · The UE does not monitor PDCCH candidates within a predetermined common service space set (e.g., Type0-PDCCH CSS set) (Condition 4-2-2) · At least one resource element for a PDCCH candidate overlaps with at least one resource element of an SSB candidate corresponding to the SSB index provided by ssb-PositionsInBurst in ServingCellConfigCommon (Condition 4-1-3)

[0198] For example, in the above Conditions 4-2-1 to 4-2-3, when the SSB and the PDCCH are transmitted from different cells / different TRPs, the UE may assume that the PRB / resource element including the transmission resource of the SSB is not used for the PDCCH / PDCCH DMRS.

[0199] Alternatively, in the above Conditions 4-2-1 to 4-2-3, when the SSB and the PDCCH are transmitted from different cells / different TRPs, it may be allowed that the PRB / resource element including the transmission resource of the SSB is used for the PDCCH / PDCCH DMRS.

[0200] [Case 4-3] When the UE monitors PDCCH candidates in a predetermined common search space set (e.g., Type0-PDCCH CSS set) of the serving cell according to a predetermined procedure, it may be assumed that no SSB is transmitted in the resource elements used for monitoring PDCCH candidates of the serving cell.

[0201] For example, when the SSB and the PDCCH are transmitted from different cells / different TRPs, the UE may assume that the PRB / resource element including the transmission resource of the SSB is not used for the PDCCH / PDCCH DMRS.

[0202] Alternatively, when the SSB and the PDCCH are transmitted from different cells / different TRPs, PRBs / resource elements including the transmission resources of the SSB may be allowed to be used for the PDCCH / PDCCH DMRS.

[0203] In particular, in Case 4-3, a predetermined common search space set (e.g., the Type0-PDCCH CSS set) can be restricted to only the serving cell. Therefore, in the resource elements used to monitor the PDCCH candidates of the predetermined common search space set of the serving cell, a configuration may be adopted in which transmission of the SSB from non-serving cells is allowed.

[0204] [Case 4-4] When at least one resource element of the PDCCH candidates of the serving cell overlaps with a predetermined resource element, the UE may not be required to monitor the PDCCH candidate (or, there is no need to monitor the PDCCH candidate). The predetermined resource element may be at least one resource element corresponding to lte-CRS-ToMatchAround, or at least one resource element corresponding to LTE-CRS-PatternList. lte-CRS-ToMatchAround may be a higher layer parameter for the UE to determine the LTE CRS pattern for which rate matching should be performed. LTE-CRS-PatternList may be a higher layer parameter regarding the LTE CRS pattern.

[0205] For example, when the SSB and the PDCCH are transmitted from different cells / different TRPs, the UE may assume that the PRBs / resource elements including the transmission resources of the SSB are not used for the PDCCH / PDCCH DMRS.

[0206] Alternatively, when the SSB and the PDCCH are transmitted from different cells / different TRPs, PRBs / resource elements including the transmission resources of the SSB may be allowed to be used for the PDCCH / PDCCH DMRS.

[0207] Also, in Case 4-4, when the lte-CRS-ToMatchAround / LTE-CRS-PatternList has a higher priority and it is necessary to avoid overlap with LTE CRS for all PDCCHs, both PDCCHs transmitted from the serving cell and the non-serving cell may be configured to comply with the restrictions of the above Case 4-4.

[0208] Alternatively, when the CORESET pool index is set (e.g., multi-DCI based MTRP), crs-RateMatch-PerCORESETPoolIndex is valid, and both lte-CRS-PatternList1-r16 and lte-CRS-PatternList2-r16 are set, the PDCCH of each cell may be configured to comply with the restrictions of each LTE CRS pattern list. When the PDCCH and the LTE CRS pattern correspond to different cells, it may not be necessary to comply with the restrictions.

[0209] [Case 4-5] When the UE is provided with higher layer parameters (e.g., availableRB-SetsPerCell) regarding the resource block set per cell, monitoring of PDCCH candidates overlapping with any RB from the RB set indicated as unreceivable by a predetermined field (e.g., available RB set indicator field) included in a predetermined DCI format (e.g., DCI format 2_0) may not be required (or, there is no need to monitor PDCCH candidates). When the UE does not obtain the available RB set indication for a symbol, it may monitor PDCCH candidates for all RB sets within the symbol.

[0210] For example, when the SSB and the PDCCH are transmitted from different cells / different TRPs, the UE may assume that the PRBs / resource elements including the transmission resources of the SSB are not used for the PDCCH / PDCCH DMRS.

[0211] Alternatively, when the SSB and the PDCCH are transmitted from different cells / different TRPs, it may be allowed that the PRBs / resource elements including the transmission resources of the SSB are used for the PDCCH / PDCCH DMRS.

[0212] Also, in Case 4-5, the higher layer parameter (e.g., availableRB-SetsPerCell) regarding the resource block set per cell may be configured to give an indication only for each serving cell (Option 5-1). That is, it may not be provided to non-serving cells. In this case, the restrictions of Case 4-5 may be applied to the PDCCHs from both serving cells and non-serving cells. Alternatively, the restrictions of Case 4-5 may be applied only to the PDCCH of the serving cell.

[0213] Alternatively, in Case 4-5, availableRB-SetsPerCell may be indicated for both serving cells and non-serving cells (Option 5-2). In this case, the PDCCH transmitted from each cell may be configured to follow the restrictions indicated for each cell.

[0214] Alternatively, in Case 4-5, availableRB-SetsPerCell may give an indication for each serving cell, and an indication for non-serving cells may be given by a predetermined higher layer parameter (e.g., availableRB-SetsPerCellForNonServingCell) (Option 5-3). In this case, the PDCCH transmitted from each cell may be configured to follow the restrictions indicated for each cell (or the restrictions corresponding to each cell).

[0215] In this case, a single upper layer parameter (e.g., availableRB-SetsPerCellForNonServingCell) may be set for multiple (e.g., all) non-serving cells. Alternatively, multiple upper layer parameters (e.g., availableRB-SetsPerCellForNonServingCell) may be set respectively for each non-serving cell.

[0216] As shown in the fourth aspect, when the SSB and the PDCCH are transmitted from different cells / TRPs, the processing can be simplified by applying the same allocation conditions (e.g., rate matching processing) / sub-carrier interval conditions as those applied when the SSB and the PDCCH are transmitted from the same cell. Alternatively, when the SSB and the PDCCH are transmitted from different cells / TRPs, the transmission of the SSB and the PDCCH can be flexibly controlled by allowing the application of at least partially different allocation conditions (e.g., rate matching processing) / sub-carrier interval conditions from those applied when the SSB and the PDCCH are transmitted from the same cell.

[0217] (UE capability information) In the above first to fourth aspects, the following UE capabilities may be set. Note that the following UE capabilities may be read as parameters (e.g., upper layer parameters) set by the network (e.g., base station) for the UE.

[0218] UE capability information regarding whether the UE applies / supports rate matching extension in one or more cases for at least one of L1 / L2 inter-cell mobility (e.g., non-serving cell), multi-DCI-based MTRP, and single-DCI-based MTRP may be defined.

[0219] The rate matching extension may be in at least one configuration (e.g., resource allocation / subcarrier spacing) of the above first mode (SSB and CSI-RS), second mode (SSB and PDSCH), third mode (PDCCH and CSI-RS), and fourth mode (SSB and PDCCH).

[0220] UE capability information regarding whether the rate matching extension is performed for reference signals / channels / signals from different cells / TRPs may be defined.

[0221] UE capability information regarding whether the rate matching extension is supported for reference signals / channels / signals from different cells / TRPs in a specific case may be defined. The specific case may be, for example, a case where a signal (e.g., SSB) from a first cell / first TRP and another signal (e.g., a reference signal / channel different from SSB) from a second cell / second TRP are transmitted.

[0222] The first mode to the fourth mode may be configured to be applied to a UE that supports / reports at least one of the above-described UE capabilities. Alternatively, the first mode to the fourth mode may be configured to be applied to a UE configured by the network.

[0223] (Wireless communication system) Hereinafter, the configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, communication is performed using any one or a combination of the wireless communication methods according to the above embodiments of the present disclosure.

[0224] FIG. 10 is a diagram showing an example of the schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), 5th generation mobile communication system New Radio (5G NR), or the like.

[0225] In addition, the wireless communication system 1 may support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between a plurality of Radio Access Technologies (RATs). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0226] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the Master Node (MN), and the base station (gNB) of NR is the Secondary Node (SN). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0227] The wireless communication system 1 may also support dual connectivity between a plurality of base stations within the same RAT (for example, NR-NR Dual Connectivity (NN-DC) where both the MN and the SN are base stations (gNBs) of NR).

[0228] The wireless communication system 1 may include a base station 11 that forms a relatively wide-coverage macro cell C1, and a base station 12 (12a - 12c) that is disposed within the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may be located within at least one cell. The arrangement, number, etc. of each cell and the user terminal 20 are not limited to the modes shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

[0229] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) and dual connectivity (DC) using a plurality of component carriers (CCs).

[0230] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Note that the frequency bands, definitions, etc. of FR1 and FR2 are not limited to these. For example, FR1 may correspond to a frequency band higher than FR2.

[0231] Also, the user terminal 20 may communicate using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0232] The plurality of base stations 10 may be connected by wire (e.g., an optical fiber compliant with Common Public Radio Interface (CPRI), an X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the upper-level station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0233] The base station 10 may be connected to the core network 30 via another base station 10 or directly. The core network 30 may include at least one of, for example, Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0234] The user terminal 20 may be a terminal corresponding to at least one of communication systems such as LTE, LTE-A, 5G, etc.

[0235] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access method 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.

[0236] The wireless access method may be referred to as a waveform. Note that in the wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

[0237] In the wireless communication system 1, as downlink channels, a Physical Downlink Shared Channel (PDSCH) shared by each user terminal 20, a Physical Broadcast Channel (PBCH), a Physical Downlink Control Channel (PDCCH), etc. may be used.

[0238] Also, in the wireless communication system 1, as uplink channels, a Physical Uplink Shared Channel (PUSCH) shared by each user terminal 20, a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), etc. may be used.

[0239] User data, upper layer control information, a System Information Block (SIB), etc. are transmitted by the PDSCH. User data, upper layer control information, etc. may be transmitted by the PUSCH. Also, a Master Information Block (MIB) may be transmitted by the PBCH.

[0240] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, downlink control information (DCI) including scheduling information of at least one of the PDSCH and the PUSCH.

[0241] Note that the DCI for scheduling the PDSCH may be called a DL assignment, DL DCI, etc., and the DCI for scheduling the PUSCH may be called a UL grant, UL DCI, etc. Note that the PDSCH may be read as DL data, and the PUSCH may be read as UL data.

[0242] For PDCCH detection, a control resource set (CORESET) and a search space may be used. The CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.

[0243] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the "search space", "search space set", "search space configuration", "search space set configuration", "CORESET", "CORESET configuration", etc. in the present disclosure may be read interchangeably with each other.

[0244] Uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (e.g., Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.) and scheduling request (SR) may be transmitted by PUCCH. A random access preamble for connection establishment with the cell may be transmitted by PRACH.

[0245] Note that in the present disclosure, downlink, uplink, etc. may be expressed without adding "link". Also, "Physical" may be omitted at the beginning of various channels.

[0246] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. may be transmitted.

[0247] The synchronization signal may be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, an SS Block (SSB), etc. Note that SS, SSB, etc. may also be called reference signals.

[0248] Also, in the wireless communication system 1, as the uplink reference signal (Uplink Reference Signal (UL-RS)), a sounding reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. may be transmitted. Note that DMRS may also be called a UE-specific reference signal.

[0249] (Base station) FIG. 11 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that one or more of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140 may be provided.

[0250] In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processes of each part described below may be omitted.

[0251] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, etc., which are described based on the common knowledge in the technical field related to the present disclosure.

[0252] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission, reception, measurement, etc. using the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140. The control unit 110 may generate data, control information, a sequence, etc. to be transmitted as a signal and transfer it to the transceiver unit 120. The control unit 110 may perform call processing (setting, releasing, etc.) of a communication channel, state management of the base station 10, management of radio resources, etc.

[0253] The transceiver unit 120 may include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on the common knowledge in the technical field related to the present disclosure.

[0254] The transceiver unit 120 may be configured as an integrated transceiver unit, or may be composed of a transmitter unit and a receiver unit. The transmitter unit may be composed of a transmission processing unit 1211 and an RF unit 122. The receiver unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0255] The transceiver antenna 130 can be composed of an antenna described based on the common understanding in the technical field related to the present disclosure, such as an array antenna.

[0256] The transceiver unit 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver unit 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0257] The transceiver unit 120 may form at least one of a transmission beam and a reception beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.

[0258] The transceiver unit 120 (transmission processing unit 1211) may perform processing of the Packet Data Convergence Protocol (PDCP) layer, processing of the Radio Link Control (RLC) layer (e.g., RLC retransmission control), processing of the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc. on, for example, data and control information obtained from the control unit 110, and generate a bit sequence to be transmitted.

[0259] The transceiver unit 120 (transmission processing unit 1211) may perform transmission processing such as channel encoding (which may include error correction encoding), modulation, mapping, filtering, discrete Fourier transform (DFT) processing (if necessary), inverse fast Fourier transform (IFFT) processing, precoding, digital-to-analog conversion, etc. on the bit sequence to be transmitted, and output a baseband signal.

[0260] The transceiver unit 120 (RF unit 122) may perform modulation to the radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the signal in the radio frequency band via the transceiver antenna 130.

[0261] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to the baseband signal, etc. on the signal in the radio frequency band received by the transceiver antenna 130.

[0262] The transceiver unit 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, etc. to the acquired baseband signal, and acquire user data, etc.

[0263] The transmission / reception unit 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0264] The transmission path interface 140 may transmit and receive signals (backhaul signaling) to and from devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0265] Note that the transmission unit and reception unit of the base station 10 in the present disclosure may be configured by at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140.

[0266] The transmission / reception unit 120 may transmit information related to the association of at least one of the channel state information reference signal and the synchronization signal block with at least one of the cell index, the control resource set pool index, and the group index set in the control resource set. The control unit 110 may control at least one of the allocation of the channel state information reference signal and the synchronization signal block in the time domain, and the subcarrier spacing applied to the channel state information reference signal and the synchronization signal block, respectively.

[0267] The transmitting / receiving unit 120 may transmit at least one of a synchronization signal block and a downlink shared channel. The control unit 110 may control the allocation of at least one of the downlink shared channel and a reference signal for the downlink shared channel according to at least one of a cell index, a control resource set pool index, and a group index set in the control resource set, which respectively correspond to the synchronization signal block and the downlink shared channel.

[0268] The transmitting / receiving unit 120 may transmit information regarding the association of at least one of a reference signal for channel state information and a downlink control channel with at least one of a cell index, a control resource set pool index, and a group index set in the control resource set. The control unit 110 may control at least one of the allocation of the reference signal for channel state information and the downlink control channel in the time domain and the subcarrier spacing applied to the reference signal for channel state information and the downlink control channel, respectively.

[0269] (User Equipment) FIG. 12 is a diagram showing an example of the configuration of a user equipment according to an embodiment. The user equipment 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Note that one or more of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0270] Note that in this example, the functional blocks of the characteristic portions in the present embodiment are mainly shown, and the user equipment 20 may be assumed to have other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

[0271] The control unit 210 controls the entire user equipment 20. The control unit 210 may be composed of a controller, a control circuit, etc., which are described based on the common knowledge in the technical field related to the present disclosure.

[0272] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission, reception, measurement, etc. using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transmission / reception unit 220.

[0273] The transmission / reception unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmission / reception unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0274] The transmission / reception unit 220 may be configured as an integrated transmission / reception unit or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of the transmission processing unit 2211 and the RF unit 222. The reception unit may be composed of the reception processing unit 2212, the RF unit 222, and the measurement unit 223.

[0275] The transmission / reception antenna 230 may be composed of an antenna described based on the common knowledge in the technical field related to the present disclosure, such as an array antenna.

[0276] The transmission / reception unit 220 may receive the above-described downlink channel, synchronization signal, downlink reference signal, etc. The transmission / reception unit 220 may transmit the above-described uplink channel, uplink reference signal, etc.

[0277] The transmission / reception unit 220 may form at least one of a transmission beam and a reception beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.

[0278] The transmission / reception unit 220 (transmission processing unit 2211) may perform processing of the PDCP layer, RLC layer (e.g., RLC retransmission control), MAC layer (e.g., HARQ retransmission control), etc. on, for example, data, control information, etc. acquired from the control unit 210, and generate a bit sequence to be transmitted.

[0279] The transmission / reception unit 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, digital-to-analog conversion, etc. on the bit sequence to be transmitted, and output a baseband signal.

[0280] Note that whether to apply DFT processing may be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is enabled, the transmission / reception unit 220 (transmission processing unit 2211) may perform DFT processing as the above transmission processing to transmit the channel using the DFT-s-OFDM waveform, or otherwise, it may not perform DFT processing as the above transmission processing.

[0281] The transmission / reception unit 220 (RF unit 222) may perform modulation to the radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmission / reception antenna 230.

[0282] On the other hand, the transmission / reception unit 220 (RF unit 222) may perform amplification, filtering, demodulation to the baseband signal, etc. on the radio frequency band signal received by the transmission / reception antenna 230.

[0283] The transmission / reception unit 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and may acquire user data and the like.

[0284] The transmission / reception unit 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may 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 be output to the control unit 210.

[0285] Note that the transmission unit and reception unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmission / reception unit 220 and the transmission / reception antenna 230.

[0286] The transmission / reception unit 220 may receive information related to the association of at least one of the channel state information reference signal and the synchronization signal block with at least one of the cell index, the control resource set pool index, and the group index set in the control resource set. The control unit 210 may determine at least one of the allocation in the time domain of the channel state information reference signal and the synchronization signal block and the subcarrier spacing applied to the channel state information reference signal and the synchronization signal block respectively based on the information.

[0287] For the channel state information reference signal and the synchronization signal block transmitted from different cells, conditions different from at least one of the allocation conditions and the subcarrier spacing conditions applied to the channel state information reference signal and the synchronization signal block transmitted from the same cell may be applied.

[0288] For the reference signal for channel state information and the synchronization signal block corresponding to different control resource pool indices, conditions different from at least one of the allocation condition and the sub-carrier interval condition applied to the reference signal for channel state information and the synchronization signal block corresponding to the same control resource set pool index may be applied.

[0289] For the reference signal for channel state information and the synchronization signal block corresponding to different group indices, conditions different from at least one of the allocation condition and the sub-carrier interval condition applied to the reference signal for channel state information and the synchronization signal block corresponding to the same group index may be applied.

[0290] The transceiver unit 220 may receive at least one of the synchronization signal block and the downlink shared channel. The control unit 210 may determine the allocation of the downlink shared channel or the reference signal for the downlink shared channel based on at least one of the cell index, the control resource set pool index, and the group index set in the control resource set, which the synchronization signal block and the downlink shared channel respectively correspond to.

[0291] For the synchronization signal block and the downlink shared channel transmitted from different cells, conditions different from at least one of the allocation condition and the sub-carrier interval condition applied to the synchronization signal block and the downlink shared channel transmitted from the same cell may be applied.

[0292] For the synchronization signal block and the downlink shared channel corresponding to different control resource pool indices, conditions different from at least one of the allocation condition and the sub-carrier interval condition applied to the synchronization signal block and the downlink shared channel corresponding to the same control resource set pool index may be applied.

[0293] For the synchronization signal block corresponding to a different group index and the downlink shared channel, conditions different from at least one of the allocation conditions and the subcarrier interval conditions applied to the synchronization signal block and the downlink shared channel corresponding to the same group index may be applied.

[0294] The transceiver unit 220 may receive information regarding the association of at least one of the channel state information reference signal and the downlink control channel with at least one of the cell index, the control resource set pool index, and the group index set in the control resource set. The control unit 210 may determine at least one of the allocation in the time domain of the channel state information reference signal and the downlink control channel and the subcarrier interval applied to each of the channel state information reference signal and the downlink control channel based on the information.

[0295] For the channel state information reference signal and the downlink control channel transmitted from different cells, conditions different from at least one of the allocation conditions and the subcarrier interval conditions applied to the channel state information reference signal and the downlink control channel transmitted from the same cell may be applied.

[0296] For the channel state information reference signal and the downlink control channel corresponding to different control resource pool indexes, conditions different from at least one of the allocation conditions and the subcarrier interval conditions applied to the channel state information reference signal and the downlink control channel corresponding to the same control resource set pool index may be applied.

[0297] For the channel state information reference signal and the downlink control channel corresponding to different group indexes, conditions different from at least one of the allocation conditions and the subcarrier interval conditions applied to the channel state information reference signal and the downlink control channel corresponding to the same group index may be applied.

[0298] (Hardware Configuration) Note that the block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically combined device, or two or more physically or logically separated devices may be directly or indirectly connected (for example, using wired, wireless, etc.), and realized using these multiple devices. The functional block may be realized by combining software with the above one device or the above multiple devices.

[0299] Here, functions include, but are not limited to, judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, regarded as, notification (broadcasting), notification (notifying), communication (communicating), forwarding, configuration (configuring), reconfiguration (reconfiguring), allocation (allocating, mapping), assignment (assigning), etc. For example, a functional block (component) that functions as transmission may be referred to as a transmission unit, a transmitter, etc. In any case, as described above, the realization method is not particularly limited.

[0300] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs the processing of the wireless communication method of the present disclosure. FIG. 13 is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may physically be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0301] In the present disclosure, terms such as apparatus, circuit, device, section, unit, etc. can be read interchangeably with each other. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without including some devices.

[0302] For example, although only one processor 1001 is illustrated, there may be a plurality of processors. Also, the processing may be executed by one processor, or the processing may be executed by two or more processors simultaneously, sequentially, or using other methods. Note that the processor 1001 may be implemented by one or more chips.

[0303] Each function in the base station 10 and the user terminal 20 is realized, for example, by causing a predetermined software (program) to be loaded onto hardware such as the processor 1001 and the memory 1002, and the processor 1001 performs calculations, controls communication via the communication device 1004, or controls at least one of reading and writing data in the memory 1002 and the storage 1003.

[0304] The processor 1001 controls the entire computer by operating, for example, an operating system. The processor 1001 may be constituted by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, etc. For example, at least a part of the above-described control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0305] Also, the processor 1001 reads a program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and the same may be true for other functional blocks.

[0306] The memory 1002 is a computer-readable recording medium, and may be constituted by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), and other appropriate storage media. The memory 1002 may be referred to as a register, cache, main memory (main storage device), etc. The memory 1002 can store a program (program code), software module, etc. executable for implementing the wireless communication method according to an embodiment of the present disclosure.

[0307] The storage 1003 is a computer-readable recording medium, and may be constituted by at least one of, for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (e.g., a compact disk (Compact Disc ROM (CD-ROM), etc.)), a digital versatile disk, a Blu-ray (registered trademark) disk, a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, and other appropriate storage media. The storage 1003 may be referred to as an auxiliary storage device.

[0308] The communication device 1004 is hardware (a transceiver device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to implement at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, the above-described transceiver unit 120 (220), the transceiver antenna 130 (230), etc. may be implemented by the communication device 1004. The transceiver unit 120 (220) may be physically or logically separated and implemented by a transmission unit 120a (220a) and a reception unit 120b (220b).

[0309] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an external input. The output device 1006 is an output device (e.g., a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that performs an output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (e.g., a touch panel).

[0310] Also, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus or may be configured using different buses for each device.

[0311] In addition, the base station 10 and the user terminal 20 may 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 some or all of the functional blocks may be realized using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0312] (Modification example) Regarding the terms described in the present disclosure and the terms necessary for understanding the present disclosure, they may be replaced with terms having the same or similar meanings. For example, channel, symbol, and signal (signal or signaling) may be read interchangeably with each other. Also, a signal may be a message. A reference signal may also be abbreviated as RS and may be called a pilot, a pilot signal, etc. depending on the applicable standard. Also, a Component Carrier (CC) may be called a cell, a frequency carrier, a carrier frequency, etc.

[0313] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may be called a subframe. Further, a subframe may be composed of one or more slots in the time domain. The subframe may have a fixed time length (e.g., 1 ms) that does not depend on numerology.

[0314] Here, the new numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel. The new numerology may indicate, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering process performed by the transceiver in the frequency domain, specific windowing process performed by the transceiver in the time domain, etc.

[0315] A slot may be composed of one or more symbols (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. Also, a slot may be a time unit based on the new numerology.

[0316] A slot may include a plurality of mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. Also, a mini-slot may be called a sub-slot. A mini-slot may be composed of a smaller number of symbols than a slot. The PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may be called PDSCH (PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using a mini-slot may be called PDSCH (PUSCH) mapping type B.

[0317] A radio frame, sub-frame, slot, mini-slot, and symbol all represent time units for signal transmission. Different names may be used for the radio frame, sub-frame, slot, mini-slot, and symbol respectively. Note that the time units such as frame, sub-frame, slot, mini-slot, and symbol in this disclosure may be read interchangeably with each other.

[0318] For example, one sub-frame may be called a TTI, or a plurality of consecutive sub-frames may be called a TTI, or one slot or one mini-slot may be called a TTI. That is, at least one of the sub-frame and the TTI may be the sub-frame (1 ms) in the existing LTE, or may be a period shorter than 1 ms (for example, 1 - 13 symbols), or may be a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, mini-slot, etc. instead of a sub-frame.

[0319] Here, the TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used at each user terminal) to each user terminal in units of TTI. Note that the definition of the TTI is not limited to this.

[0320] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), code block, codeword, etc., or may be a processing unit for scheduling, link adaptation, etc. Note that when the TTI is given, the time interval (for example, the number of symbols) in which the transport block, code block, codeword, etc. are actually mapped may be shorter than the TTI.

[0321] In addition, when one slot or one mini-slot is called a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may be the minimum time unit for scheduling. Also, the number of slots (number of mini-slots) constituting the minimum time unit for the scheduling may be controlled.

[0322] A TTI having a time length of 1 ms may be called a normal TTI (TTI in 3GPP Rel.8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

[0323] Note that a long TTI (e.g., a normal TTI, a subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be read as a TTI having a TTI length less than that of the long TTI and not less than 1 ms.

[0324] A resource block (Resource Block (RB)) is a resource allocation unit in the time domain and the frequency domain, and in the frequency domain, it may include one or a plurality of consecutive subcarriers. The number of subcarriers included in the RB may be the same regardless of the numerology, for example, it may be 12. The number of subcarriers included in the RB may be determined based on the numerology.

[0325] Also, the RB may include one or a plurality of symbols in the time domain, and may be the length of one slot, one mini-slot, one subframe, or one TTI. One TTI, one subframe, etc. may each be constituted by one or a plurality of resource blocks.

[0326] One or more RBs may also be referred to as a Physical Resource Block (PRB), a Sub-Carrier Group (SCG), a Resource Element Group (REG), a PRB pair, an RB pair, etc.

[0327] Also, a resource block may be composed of one or more Resource Elements (REs). For example, 1 RE may be a radio resource region of 1 sub-carrier and 1 symbol.

[0328] A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (common RBs) for a certain numerology in a certain carrier. Here, the common RBs may be specified by the index of the RBs based on the common reference point of the carrier. The PRB is defined in a certain BWP and may be numbered within the BWP.

[0329] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be set within one carrier for a UE.

[0330] At least one of the set BWPs may be active, and the UE may not be assumed to transmit and receive a predetermined channel / signal outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be read as "BWP".

[0331] Note that the structures such as the above-described radio frames, sub-frames, slots, mini-slots, and symbols are merely examples. For example, the number of sub-frames included in a radio frame, the number of slots per sub-frame or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of sub-carriers included in an RB, and the number of symbols, symbol length, cyclic prefix (CP) length, etc. within a TTI can be changed in various ways.

[0332] Also, the information, parameters, etc. described in the present disclosure may be represented using absolute values, relative values from a predetermined value, or another corresponding piece of information. For example, a radio resource may be indicated by a predetermined index.

[0333] The names used for parameters, etc. in the present disclosure are not limiting names in any way. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Since various channels (such as PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, the various names assigned to these various channels and information elements are not limiting names in any way.

[0334] The information, signals, etc. described in the present disclosure may be represented using any of various different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0335] Also, information, signals, etc. may be output from at least one of the upper layer to the lower layer and from the lower layer to the upper layer. Information, signals, etc. may be input and output via a plurality of network nodes.

[0336] The input / output information, signals, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. The information, signals, etc. to be input / output may be overwritten, updated, or appended. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.

[0337] The notification of information is not limited to the aspects / embodiments described in this disclosure and may be performed using other methods. For example, the notification of information in this disclosure may be implemented by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper 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.

[0338] Note that physical layer signaling may also be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Also, RRC signaling may also be referred to as an RRC message and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc. Also, MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0339] Also, the notification of predetermined information (e.g., the notification of "being X") is not limited to an explicit notification and may be performed implicitly (e.g., by not performing the notification of the predetermined information or by the notification of another piece of information).

[0340] The determination may be made based on a value represented by 1 bit (either 0 or 1), a boolean value represented by true or false, or a numerical comparison (for example, comparison with a predetermined value).

[0341] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc., whether called software, firmware, middleware, microcode, a hardware description language, or by any other name.

[0342] Also, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, when software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (such as infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of the transmission medium.

[0343] The terms "system" and "network" used in this disclosure may be used interchangeably. "Network" may mean the devices (such as base stations) included in the network.

[0344] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", "panel", etc. may be used interchangeably.

[0345] In the present disclosure, terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", etc. may be used interchangeably. The base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0346] A base station can accommodate one or more (e.g., three) cells. When the base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services in this coverage.

[0347] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" can be used interchangeably.

[0348] A mobile station may also be called a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other appropriate terms.

[0349] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or unmanned). Note that at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0350] Also, the base station in the present disclosure may be replaced by a user terminal. For example, for a configuration in which communication between a base station and a user terminal is replaced by communication between a plurality of user terminals (which may be referred to as, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), each aspect / embodiment of the present disclosure may be applied. In this case, the functions of the above-described base station 10 may be configured as functions of the user terminal 20. Also, terms such as "uplink" and "downlink" may be replaced with terms corresponding to inter-terminal communication (for example, "side"). For example, an uplink channel, a downlink channel, etc. may be replaced with a side channel.

[0351] Similarly, the user terminal in the present disclosure may be replaced by a base station. In this case, the functions of the above-described user terminal 20 may be configured as functions of the base station 10.

[0352] In the present disclosure, operations assumed to be performed by a base station may, in some cases, be performed by its upper node. In a network including one or more network nodes having a base station, it is clear that 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, Mobility Management Entity (MME), Serving-Gateway (S-GW), etc., but not limited thereto), or a combination thereof.

[0353] Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched and used during execution. Also, the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be rearranged as long as there is no contradiction. For example, for the methods described in the present disclosure, the elements of various steps are presented using an exemplary order and are not limited to the presented specific order.

[0354] Each aspect / embodiment described in the present disclosure may be applied to systems using 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) (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), other suitable wireless communication methods, and next-generation systems extended based on these. Further, a combination of multiple systems (for example, a combination of LTE or LTE-A and 5G) may be applied.

[0355] As used in the present disclosure, the description "based on" does not mean "only based on" unless otherwise specified. In other words, the description "based on" means both "only based on" and "at least based on".

[0356] Any reference to an element using terms such as "first", "second", etc. used in this disclosure does not generally limit the quantity or order of those elements. These terms can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, a reference to a first and a second element does not mean that only two elements can be employed or that the first element must precede the second element in any way.

[0357] The term "determining" as used in this disclosure may encompass a wide variety of operations. For example, "determining" may be considered to be "judging", "calculating", "computing", "processing", "deriving", "investigating", "looking up, search, inquiry" (e.g., searching in a table, database, or another data structure), "ascertaining", etc.

[0358] Also, "determining" may be considered to be "receiving" (e.g., receiving information), "transmitting" (e.g., transmitting information), "input", "output", "accessing" (e.g., accessing data in a memory), etc.

[0359] Also, "determining" may be considered to be "resolving", "selecting", "choosing", "establishing", "comparing", etc. That is, "determining" may be considered to be "determining" some operation.

[0360] Also, "judgment (decision)" may be read as "assuming", "expecting", "considering", etc.

[0361] As used in this disclosure, the terms "connected" and "coupled", or any variations thereof, mean any direct or indirect connection or coupling between two or more elements, and can include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements can be physical, logical, or a combination thereof. For example, "connected" may be read as "accessed".

[0362] In this disclosure, when two elements are connected, they can be considered to be "connected" or "coupled" to each other using one or more wires, cables, printed electrical connections, etc., and, as some non-limiting and non-exhaustive examples, electromagnetic energy having wavelengths in the radio frequency region, microwave region, optical (both visible and invisible) region, etc.

[0363] In this disclosure, the term "A is different from B" may mean that "A and B are different from each other". Note that the term may also mean that "A and B are each different from C". Terms such as "separate", "coupled", etc. may also be interpreted in the same way as "different".

[0364] In this disclosure, when the terms "include", "including", and variations thereof are used, these terms are intended to be inclusive in the same way as the term "comprising". Further, the term "or" as used in this disclosure is not intended to be an exclusive disjunction.

[0365] In the present disclosure, for example, when articles are added by translation, such as a, an, and the in English, the present disclosure may include that the nouns following these articles are in the plural form.

[0366] As described above, the invention according to the present disclosure has been described in detail. However, it is obvious to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the invention defined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of exemplification and does not bring any limiting meaning to the invention according to the present disclosure.

Claims

1. A control unit that determines the allocation of a demodulation reference signal (DMRS) for the physical downlink shared channel (PDSCH) based on the corresponding physical cell ID of the synchronization signal / physical broadcast channel (SS / PBCH) block and the PDSCH respectively; A receiving unit that receives at least one of the SS / PBCH block and the DMRS for the PDSCH, and has, When the SS / PBCH block and the PDSCH are transmitted from the same cell, the control unit does not expect to receive the DMRS for the PDSCH in the resource element overlapping with the resource element of the SS / PBCH block, When the SS / PBCH block and the PDSCH are transmitted from different cells, the PDSCH is characterized in that it is associated with a transmission configuration indication (TCI) state.

2. For the SS / PBCH block and the PDSCH transmitted from different cells, allocation conditions different from those applied to the SS / PBCH block and the PDSCH transmitted from the same cell are applied. The terminal according to claim 1, characterized in that.

3. A step of determining the allocation of a demodulation reference signal (DMRS) for the physical downlink shared channel (PDSCH) based on the corresponding physical cell ID of the synchronization signal / physical broadcast channel (SS / PBCH) block and the PDSCH respectively; A step of receiving at least one of the SS / PBCH block and the DMRS for the PDSCH, and has, When the SS / PBCH block and the PDSCH are transmitted from the same cell, the reception of the DMRS for the PDSCH in the resource element overlapping with the resource element of the SS / PBCH block is not expected, When the SS / PBCH block and the PDSCH are transmitted from different cells, the PDSCH is characterized in that it is associated with a transmission configuration indication (TCI) state. A wireless communication method for a terminal.

4. A system including a terminal and a base station, The terminal is, A control unit that determines the allocation of a demodulation reference signal (DMRS) for the physical downlink shared channel (PDSCH) based on the physical cell ID corresponding to the synchronization signal / physical broadcast channel (SS / PBCH) block and the PDSCH respectively, A receiving unit that receives at least one of the SS / PBCH block and the DMRS for the PDSCH, When the SS / PBCH block and the PDSCH are transmitted from the same cell, the control unit does not expect to receive the DMRS for the PDSCH in the resource element overlapping with the resource element of the SS / PBCH block, When the SS / PBCH block and the PDSCH are transmitted from different cells, the PDSCH is associated with a transmission configuration indicator (TCI) state, The base station has a transmitting unit that transmits at least one of the SS / PBCH block and the DMRS for the PDSCH. A system characterized by this.

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