WO2023073930A1 - Terminal, radio communication method, and base station - Google Patents

Abstract

A terminal according to an aspect of this disclosure is characterized by comprising: a reception unit that when the same transmission configuration indication (TCI) state is applied to both downlink (DL) and uplink (UL), receives a specific setting that enables or disables the starting of the activation of the TCI state by UE; and a control unit that starts the activation of the TCI state. An aspect of this disclosure makes it possible to activate an appropriate TCI state.

Description

Terminal, wireless communication method and base station

The present disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems.

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

LTE successor systems (for example, 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later) are also being considered. .

In future wireless communication systems (for example, NR), user terminals (terminals, user terminals, user equipment (UE)) are being studied to control transmission and reception processing based on the transmission configuration indication (TCI) state. .

Also, the UE considers that the same TCI state (joint TCI state) is applied for UL and DL, or a different state (separate TCI state) is applied for each of UL and DL. It is

However, no detailed design has been revealed for the activation of the TCI state when at least one of the joint TCI state or the separate TCI state is applied. This may result in poor communication throughput due to the proper TCI state not being activated.

Therefore, one object of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can activate an appropriate TCI state.

In a terminal according to an aspect of the present disclosure, when the same Transmission Configuration Indication (TCI) state is applied to downlink (DL) and uplink (UL), activation of the TCI state is initiated by the UE and a control unit for initiating activation of said TCI state.

According to one aspect of the present disclosure, the appropriate TCI state can be activated.

1A and 1B are diagrams illustrating examples of TCI state settings. FIG. 2 is a diagram of Rel. 16 shows RRC configuration of TCI state and QCL information in V.16. FIG. FIG. 3 is a diagram of Rel. 16 shows CSI reporting in X.16; FIG. FIG. 4 is a diagram illustrating an example of updating the TCI status in the second embodiment. FIG. 5 is a diagram showing an example of updating the TCI status in the third embodiment. 6A and 6B are diagrams showing an example of updating the TCI state in the ninth embodiment. 7A and 7B are diagrams showing an example of updating the TCI state in the tenth embodiment. FIG. 8 is a diagram illustrating an example of a schematic configuration of a radio communication system according to an embodiment. FIG. 9 is a diagram illustrating an example of the configuration of a base station according to one embodiment. FIG. 10 is a diagram illustrating an example of the configuration of a user terminal according to one embodiment. FIG. 11 is a diagram illustrating an example of hardware configurations of a base station and a user terminal according to one embodiment. FIG. 12 is a diagram illustrating an example of a vehicle according to one embodiment;

(CSI Report)
Rel. In 15/16 NR, the UE measures the channel state using a predetermined reference signal (or resource for the reference signal), and feeds back (reports) channel state information (Channel State Information: CSI) to the base station. )do.

UE, channel state information reference signal (Channel State Information-Reference Signal: CSI-RS), synchronization signal / broadcast channel (Synchronization Signal / Physical Broadcast Channel: SS / PBCH) block, synchronization signal (Synchronization Signal: SS), demodulation The channel state may be measured using a reference signal (DeModulation Reference Signal: DMRS) or the like.

The CSI-RS resource may include at least one of Non Zero Power (NZP) CSI-RS and CSI-Interference Management (IM). The SS/PBCH block is a block containing synchronization signals (e.g., Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS)) and PBCH (and corresponding DMRS), and the SS block ( SSB) or the like. An SSB index may be given for the temporal position of the SSB within the half-frame.

In addition, CSI includes Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), CSI-RS Resource Indicator (CRI), SS/PBCH block resource indicator ( SS/PBCH Block Indicator: SSBRI), Layer Indicator: LI, Rank Indicator: RI, Layer 1 (L1) - Reference Signal Received Power (RSRP) (reference signal received power in Layer 1), At least one of L1-Reference Signal Received Quality (RSRQ), L1-Signal to Interference plus Noise Ratio (SINR), L1-Signal to Noise Ratio (SNR), etc. may be included.

CSI may have multiple parts. A first part of CSI (CSI part 1) may contain information with a relatively small number of bits (eg, RI). A second part of CSI (CSI part 2) may include information with a relatively large number of bits (eg, CQI), such as information determined based on CSI part 1.

As CSI feedback methods, (1) periodic CSI (Periodic CSI: P-CSI) reporting, (2) aperiodic CSI (Aperiodic CSI: A (AP)-CSI) reporting, (3) semi-permanent Targeted (semi-persistent, semi-persistent) CSI reporting (Semi-Persistent CSI: SP-CSI) reports, etc. are being considered.

The UE notifies information on CSI reporting (may be called CSI report configuration information) using higher layer signaling, physical layer signaling (for example, downlink control information (DCI)) or a combination thereof. may be The CSI report configuration information may be configured using, for example, the RRC information element "CSI-ReportConfig".

Here, the higher layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.

For MAC signaling, for example, MAC Control Element (MAC CE), MAC Protocol Data Unit (MAC PDU), etc. may be used. Broadcast information includes, for example, Master Information Block (MIB), System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information : OSI).

The CSI report configuration information may include, for example, information on the reporting period, offset, etc., and these may be expressed in predetermined time units (slot units, subframe units, symbol units, etc.). The CSI report configuration information may include a configuration ID (CSI-ReportConfigId). Parameters such as the type of CSI reporting method (SP-CSI or not, etc.) and reporting cycle may be specified by the configuration ID. The CSI reporting configuration information may include information (CSI-ResourceConfigId) indicating which signal (or resource for which signal) is used to report the measured CSI.

(beam management)
Until now, Rel. In 15 NR, methods of beam management (BM) have been considered. In the beam management, it is considered to perform beam selection based on the L1-RSRP reported by the UE. Changing (switching) the beam of a signal/channel may correspond to changing the Transmission Configuration Indication state (TCI state) of that signal/channel.

The beam selected by beam selection may be a transmission beam (Tx beam) or a reception beam (Rx beam). Also, the beam selected by beam selection may be a UE beam or a base station beam.

The UE may report (transmit) measurement results for beam management using PUCCH or PUSCH. The measurement result may be, for example, CSI including at least one of L1-RSRP, L1-RSRQ, L1-SINR, L1-SNR, and the like. Also, the measurement result may be called a beam measurement, a beam measurement result, a beam report, a beam measurement report, or the like.

CSI measurements for beam reporting may include interferometric measurements. The UE may use resources for CSI measurement to measure channel quality, interference, etc. and derive beam reports. The resource for CSI measurement may be, for example, at least one of SS/PBCH block resources, CSI-RS resources, other reference signal resources, and the like. The CSI measurement report configuration information may be configured in the UE using higher layer signaling.

A beam report may include the result of at least one of channel quality measurement and interference measurement. The results of channel quality measurements may include, for example, L1-RSRP. The results of the interference measurements may include L1-SINR, L1-SNR, L1-RSRQ, other indicators of interference (eg, any indicator that is not L1-RSRP), and the like.

It should be noted that the CSI measurement resource for beam management may be called a beam measurement resource. In addition, the CSI measurement target signal/channel may be referred to as a beam measurement signal. Also, CSI measurement/report may be read as at least one of measurement/report for beam management, beam measurement/report, radio link quality measurement/report, and the like.

　The CSI report configuration information that considers the current NR beam management is included in the RRC information element "CSI-ReportConfig". The information in the RRC information element "CSI-ReportConfig" will be explained.

The CSI report configuration information (CSI-ReportConfig) may include report amount information ("report amount", which may be represented by the RRC parameter "reportQuantity"), which is information on parameters to report. The reporting volume information is the ASN. 1 object type. Therefore, one of the parameters (cri-RSRP, ssb-Index-RSRP, etc.) defined as the report amount information is set.

A UE in which a higher layer parameter (eg, RRC parameter "groupBasedBeamReporting") included in the CSI reporting configuration information is set to enabled has multiple beam measurement resource IDs (eg, SSBRI, CRI) for each reporting configuration. , and their corresponding measurements (eg, L1-RSRP) may be included in the beam report.

A UE for which the number of RS resources to be reported is set to one or more by a higher layer parameter (for example, the RRC parameter "nrofReportedRS") included in the CSI report configuration information is one or more beam measurement resources for each report configuration. The IDs and their corresponding one or more measurements (eg, L1-RSRP) may be included in the beam report.

(TCI, spatial relations, QCL)
In NR, the reception processing (e.g., reception, demapping, demodulation, decoding), transmission processing (eg, at least one of transmission, mapping, precoding, modulation, encoding).

The TCI state may represent those that apply to downlink signals/channels. The equivalent of TCI conditions applied to uplink signals/channels may be expressed as spatial relations.

The TCI state is information about the pseudo-colocation (QCL) of signals/channels, and may be called spatial reception parameters, spatial relation information, or the like. The TCI state may be set in the UE on a channel-by-channel or signal-by-signal basis.

　QCL is an index that indicates the statistical properties of a signal/channel. For example, when one signal/channel and another signal/channel have a QCL relationship, Doppler shift, Doppler spread, average delay ), delay spread, spatial parameters (e.g., spatial Rx parameter) are identical (QCL with respect to at least one of these). You may

Note that the spatial reception parameters may correspond to the reception beams of the UE (eg, reception analog beams), and the beams may be specified based on the spatial QCL. QCL (or at least one element of QCL) in the present disclosure may be read as sQCL (spatial QCL).

A plurality of types (QCL types) may be defined for the QCL. For example, four QCL types AD may be provided with different parameters (or parameter sets) that can be assumed to be the same, and the parameters (which may be called QCL parameters) are shown below:
QCL type A (QCL-A): Doppler shift, Doppler spread, mean delay and delay spread,
QCL type B (QCL-B): Doppler shift and Doppler spread,
QCL type C (QCL-C): Doppler shift and mean delay;
• QCL Type D (QCL-D): Spatial reception parameters.

The UE's assumption that one Control Resource Set (CORESET), channel, or reference signal is in a specific QCL (e.g., QCL type D) relationship with another CORESET, channel, or reference signal is It may be called the QCL assumption.

A UE may determine at least one of a transmit beam (Tx beam) and a receive beam (Rx beam) for a signal/channel based on the TCI conditions or QCL assumptions of that signal/channel.

The TCI state may be, for example, information about the QCL between the channel of interest (in other words, the reference signal (RS) for the channel) and another signal (for example, another RS). . The TCI state may be set (indicated) by higher layer signaling, physical layer signaling or a combination thereof.

Physical layer signaling may be, for example, downlink control information (DCI).

Channels for which TCI states or spatial relationships are set (specified) are, for example, Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH), Physical Uplink Shared Channel It may be at least one of a channel (PUSCH)) and an uplink control channel (Physical Uplink Control Channel (PUCCH)).

In addition, RSs that have a QCL relationship with the channel are, for example, a synchronization signal block (SSB), a channel state information reference signal (CSI-RS), a measurement reference signal (Sounding It may be at least one of a reference signal (SRS)), a tracking CSI-RS (also called a tracking reference signal (TRS)), and a QCL detection reference signal (also called a QRS).

An 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). An SSB may also be called an SS/PBCH block.

A QCL type X RS in a TCI state may mean an RS that has a QCL type X relationship with (the DMRS of) a certain channel/signal, and this RS is called a QCL type X QCL source in that TCI state. may

QCL type A RS is always set for PDCCH and PDSCH, and QCL type D RS may be additionally set. Since it is difficult to estimate Doppler shift, delay, etc. by receiving DMRS one-shot, QCL type A RS is used to improve channel estimation accuracy. QCL type D RS is used for receive beam determination during DMRS reception.

For example, TRS 1-1, 1-2, 1-3, 1-4 are transmitted, and TRS 1-1 is notified as QCL type C/D RS depending on the TCI status of PDSCH. By being notified of the TCI state, the UE can use the information obtained from the past periodic TRS1-1 reception/measurement results for PDSCH DMRS reception/channel estimation. In this case, the PDSCH QCL source is TRS1-1 and the QCL target is the PDSCH DMRS.

(Multi-TRP)
In NR, one or more transmission/reception points (Transmission/Reception Points (TRP)) (multi TRP (multi TRP (MTRP))) uses one or more panels (multi-panel) to the UE DL transmission is under consideration. It is also being considered that the UE uses one or more panels to perform UL transmissions for one or more TRPs.

A plurality of TRPs may correspond to the same cell identifier (cell identifier (ID)) or may correspond to different cell IDs. The cell ID may be a physical cell ID or a virtual cell ID.

Multi-TRPs (eg, TRP #1, #2) may be connected by ideal/non-ideal backhauls to exchange information, data, and the like. Different codewords (CW) and different layers may be transmitted from each TRP of the multi-TRP. Non-Coherent Joint Transmission (NCJT) may be used as one form of multi-TRP transmission.

In NCJT, for example, TRP#1 modulate-maps a first codeword and layer-maps a first number of layers (e.g., two layers) with a first precoding to transmit a first PDSCH. do. TRP#2 also modulates and layer-maps a second codeword to transmit a second PDSCH with a second number of layers (eg, 2 layers) with a second precoding.

It should be noted that multiple PDSCHs to be NCJTed (multi-PDSCH) may be defined as partially or completely overlapping in at least one of the time and frequency domains. That is, the first PDSCH from the first TRP and the second PDSCH from the second TRP may overlap at least one of time and frequency resources.

It may be assumed that these first PDSCH and second PDSCH are not quasi-co-located (QCL). Reception of multiple PDSCHs may be translated as simultaneous reception of PDSCHs that are not of a certain QCL type (eg, QCL type D).

Multiple PDSCHs from multiple TRPs (which may be referred to as multiple PDSCHs) may be scheduled using one DCI (single DCI, single PDCCH) (single master mode, based on single DCI Multi-TRP (single-DCI based multi-TRP)). Multiple PDSCHs from multi-TRP may be scheduled using multiple DCIs (multi-DCI, multiple PDCCH) (multi-master mode, multi-DCI based multi-TRP (multiple PDCCH)). TRP)).

　In URLLC for multi-TRPs, it is being considered to support PDSCH (transport block (TB) or codeword (CW)) repetition across multi-TRPs. It is contemplated that repetition schemes (URLLC schemes, eg schemes 1, 2a, 2b, 3, 4) spanning multiple TRPs on the frequency domain or layer (spatial) domain or time domain will be supported. In Scheme 1, multiple PDSCHs from multiple TRPs are space division multiplexed (SDM). In schemes 2a, 2b, the PDSCH from multiple TRPs is frequency division multiplexed (FDM). In scheme 2a, the redundancy version (RV) is the same for multiple TRPs. In scheme 2b, the RVs may be the same or different for the multi-TRPs. In schemes 3 and 4, multiple PDSCHs from multiple TRPs are time division multiplexed (TDM). In Scheme 3, multiple PDSCHs from multiple TRPs are transmitted within one slot. In Scheme 4, multiple PDSCHs from multiple TRPs are transmitted in different slots.

According to such a multi-TRP scenario, more flexible transmission control using channels with good quality is possible.

In order to support intra-cell (with same cell ID) and inter-cell (with different cell ID) multi-TRP transmissions based on multiple PDCCHs, PDCCH and PDSCH with multiple TRPs In RRC configuration information for linking multiple pairs, one control resource set (CORESET) in PDCCH configuration information (PDCCH-Config) may correspond to one TRP.

The UE may determine multi-TRP based on multi-DCI if at least one of the following conditions 1 and 2 is met: In this case, TRP may be read as a CORESET pool index.
[Condition 1]
A CORESET pool index of 1 is set.
[Condition 2]
Two different values (eg, 0 and 1) of the CORESET pool index are set.

The UE may determine multi-TRP based on single DCI if the following conditions are met: In this case, two TRPs may be translated into two TCI states indicated by MAC CE/DCI.
[conditions]
"Enhanced TCI States Activation/Deactivation for UE- specific PDSCH MAC CE)” is used.

DCI for common beam indication may be a UE-specific DCI format (e.g., DL DCI format (e.g., 1_1, 1_2), UL DCI format (e.g., 0_1, 0_2)), or a UE group common (UE-group common) DCI format.

(Unified/Common TCI Framework)
The unified TCI framework allows UL and DL channels to be controlled by a common framework. The unified TCI framework is Rel. Instead of defining TCI conditions or spatial relationships per channel as in 15, a common beam (common TCI condition) may be indicated and applied to all channels in the UL and DL, or for the UL A common beam may be applied to all channels in the UL and a common beam for the DL may be applied to all channels in the DL.

One common beam for both DL and UL, or a common beam for DL and a common beam for UL (two common beams in total) are being considered.

The UE may assume the same TCI state (joint TCI state, joint TCI pool, joint common TCI pool, joint TCI state set) for UL and DL. The UE has separate TCI states for each of UL and DL (separate TCI state, separate TCI pool, UL separate TCI pool and DL separate TCI pool, separate common TCI pool, UL common TCI pool and DL common TCI pool). can be assumed.

The UL and DL default beams may be aligned by MAC CE-based beam management (MAC CE level beam designation). The PDSCH default TCI state may be updated to match the default UL beam (spatial relationship).

DCI-based beam management (DCI level beam indication) may indicate common beam/unified TCI state from the same TCI pool for both UL and DL (joint common TCI pool, joint TCI pool, set). X (>1) TCI states may be activated by MAC CE. The UL/DL DCI may select 1 out of X active TCI states. The selected TCI state may apply to both UL and DL channels/RS.

The TCI pool (set) may be a plurality of TCI states set by RRC parameters, or a plurality of TCI states activated by MAC CE (active TCI state, active TCI pool, set). Each TCI state may be a QCL type A/D RS. SSB, CSI-RS, or SRS may be set as QCL type A/D RS.

The number of TCI states corresponding to each of one or more TRPs may be defined. For example, the number N (≧1) of TCI states (UL TCI states) applied to UL channels/RSs and the number M (≧1) of TCI states (DL TCI states) applied to DL channels/RSs and may be defined. At least one of N and M may be signaled/configured/indicated to the UE via higher layer signaling/physical layer signaling.

In this disclosure, when N = M = X (where X is any integer), the UE has X UL and DL common TCI states (corresponding to X TRPs) (joint TCI status) is signaled/set/indicated.

Also, when N = X (X is an arbitrary integer), M = Y (Y is an arbitrary integer, Y = X may be), X (X TRPs) and Y DL TCI states (corresponding to Y TRPs) are signaled/set/indicated. The UL TCI state and the DL TCI state may mean a TCI state common to UL and DL (i.e., joint TCI state), or may mean a TCI state for each of UL and DL (i.e., separate TCI state). You may

For example, if N = M = 1, it may mean that the UE is notified/configured/indicated of one UL and DL common TCI state for a single TRP ( joint TCI state for a single TRP).

Also, for example, when N = 1 and M = 1, the UE is separately notified/set/instructed of one UL TCI state and one DL TCI state for a single TRP (separate TCI state for single TRP).

Also, for example, if N = M = 2, the UE is notified/configured/instructed of a TCI state common to multiple (two) UL and DL for multiple (two) TRPs (joint TCI state for multiple TRPs).

Also, for example, when N = 2 and M = 2, for the UE, multiple (two) UL TCI states and multiple (two) DL TCI states for multiple (two) TRPs State may mean signaled/set/indicated (separate TCI state for multiple TRPs).

Also, for example, when N = 2 and M = 1, it may mean that the TCI state common to the two UL and DL is notified/configured/indicated to the UE. At this time, the UE may use the two configured/indicated TCI states as the UL TCI state, and use one of the two configured/indicated TCI states as the DL TCI state.

Also, for example, when N = 2 and M = 1, it means that two UL TCI states and one DL TCI state are notified/set/instructed to the UE as separate TCI states. may mean.

In the above example, the case where the values of N and M are 1 or 2 has been explained, but the values of N and M may be 3 or more, and N and M may be different.

The case of M>1/N>1 may indicate at least one of TCI status indications for multiple TRPs and multiple TCI status indications for inter-band CA.

In the example of FIG. 1A, RRC parameters (information elements) configure multiple TCI states for both DL and UL. The MAC CE may activate multiple TCI states out of multiple configured TCI states. A DCI may indicate one of multiple TCI states that have been activated. DCI may be UL/DL DCI. The indicated TCI conditions may apply to at least one (or all) of the UL/DL channels/RSs. One DCI may indicate both UL TCI and DL TCI.

In the example of FIG. 1A, one point may be one TCI state that applies to both UL and DL, or two TCI states that apply to UL and DL respectively.

At least one of the multiple TCI states set by the RRC parameters and the multiple TCI states activated by the MAC CE may be called a TCI pool (common TCI pool, joint TCI pool, TCI state pool). good. Multiple TCI states activated by a MAC CE may be called an active TCI pool (active common TCI pool).

In addition, in the present disclosure, higher layer parameters (RRC parameters) that configure multiple TCI states may be referred to as configuration information that configures multiple TCI states, or simply "configuration information." In addition, in the present disclosure, to indicate one of the plurality of TCI states using the DCI may be receiving indication information indicating one of the plurality of TCI states included in the DCI. , it may simply be to receive "instruction information".

In the example of FIG. 1B, the RRC parameters configure multiple TCI states (joint common TCI pools) for both DL and UL. The MAC CE may activate multiple TCI states (active TCI pool) out of multiple configured TCI states. Separate active TCI pools for each of the UL and DL may be configured/activated.

A DL DCI or a new DCI format may select (indicate) one or more (eg, one) TCI states. The selected TCI state may be applied to one or more (or all) DL channels/RS. The DL channel may be PDCCH/PDSCH/CSI-RS. The UE uses Rel. A 16 TCI state operation (TCI framework) may be used to determine the TCI state for each channel/RS in the DL. A UL DCI or new DCI format may select (indicate) one or more (eg, one) TCI states. The selected TCI state may be applied to one or more (or all) UL channels/RS. The UL channel may be PUSCH/SRS/PUCCH. Thus, different DCIs may indicate UL TCI and DL DCI separately.

The existing DCI format 1_1/1_2 may be used to indicate common TCI status.

A common TCI framework may have separate TCI states for DL and UL.

(analysis)
<Rel. 16 TCI status and QCL information>
FIG. 2 is a diagram of Rel. 16 shows RRC configuration of TCI state and QCL information in V.16. FIG. As the TCI state, a TCI state ID (tci-StateId) and QCL types 1 and 2 (qcl-Type1,2) are set. QCL information (QCL-Info) corresponds to QCL types 1 and 2, respectively. The QCL information includes cell, BWP ID (bwp-Id), reference signal (csi-rs, ssb), and QCL type.

　Rel. In 17 unified TCI state settings, joint/separate DL/UL TCI state indication by MAC CE/DCI is considered to support the case of M=N=1. Also, inter-cell beam management is described in Rel. 17 is also being considered for support. For example, TCI states may correspond to different PCI SSBs.

<Rel. CSI report in 16>
FIG. 3 is a diagram of Rel. 16 shows CSI reporting in X.16; FIG. As shown in FIG. 3, the CSI report includes CRI or SSBRI, L1-RSRP/L1-SINR value, Differential L1-RSRP/L1-SINR/value.

　Rel. 17, enhancements to CSI (L1 beam) reporting/measurement are being considered. For example, L1 beam reporting/measurement for cells with different PCIs is being considered for enhancement of DL L1 beam reporting in inter-cell beam management. Also, Rel. For enhancement of DL group-based L1 beam reporting in 17 multi-TRP beam management, the UE can receive up to 4 beam groups (2 beams in each group) and receive beams within a group simultaneously. good too. Also, in order to deal with the UL Maximum Permitted Exposure (MPE) problem, Rel. Power Management Maximum Power Reduction (P-MPR) value added in Power Headroom Report (PHR) MAC CE SSBRI/CRI for enhancement of UL L1 beam reporting in 17 good.

<Assumption 1>
Assumption 1 applies the joint DL/UL TCI state and the numbers of M,N are M=N=1, M=2 and N=1, M=1 and N=2, M=2 and Assume that either N=1 or

When applying the joint DL/UL TCI state, it is possible to reuse the DL L1 beam report to indicate the activated joint DL/UL TCI state recommended by the UE.

<Assumption 2>
In assumption 2, separate DL/UL TCI states are applied and the numbers of M, N are M=N=1, M=2 and N=1, M=1 and N=2, M=2 and Assume that either N=1 or

In the case of separate DL/UL TCI states, the DL/UL active beam/TCI states need to be updated separately.

A detailed design has not been clarified for activation of the TCI state when at least one of assumption 1 (joint TCI state) or assumption 2 (separate TCI state) is applied. For example, configuration from the base station or reporting by the UE is not clear. This may result in poor communication throughput due to the proper TCI state not being activated.

Therefore, the inventors have conceived a method by which the appropriate TCI state can be activated.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. The wireless communication method according to each embodiment may be applied independently, or may be applied in combination.

In the present disclosure, "A/B" and "at least one of A and B" may be read interchangeably. Also, in the present disclosure, "A/B/C" may mean "at least one of A, B and C."

In this disclosure, activate, deactivate, indicate (or indicate), select, configure, update, determine, report, etc. , may be read interchangeably. In the present disclosure, supporting, controlling, controllable, operating, capable of operating, etc. may be read interchangeably.

In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, information elements (IEs), settings, etc. may be read interchangeably. In the present disclosure, Medium Access Control control element (MAC Control Element (CE)), update command, activation/deactivation command, etc. may be read interchangeably.

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

In the present disclosure, MAC signaling may use, for example, MAC Control Element (MAC CE), MAC Protocol Data Unit (PDU), and the like. Broadcast information includes, for example, Master Information Block (MIB), System Information Block (SIB), Remaining Minimum System Information (RMSI), and other system information ( It may be Other System Information (OSI).

In the present disclosure, the physical layer signaling may be, for example, downlink control information (DCI), uplink control information (UCI), or the like.

In the present disclosure, indices, identifiers (ID), indicators, resource IDs, etc. may be read interchangeably. In the present disclosure, sequences, lists, sets, groups, groups, clusters, subsets, etc. may be read interchangeably.

In the present disclosure, a panel, a UE panel, a panel group, a beam, a beam group, a precoder, an Uplink (UL) transmitting entity, a transmission/reception point (TRP), a base station, a spatial relation information (SRI )), spatial relationship, SRS resource indicator (SRI), control resource set (COntrol REsource SET (CORESET)), physical downlink shared channel (PDSCH), codeword (CW), transport Block (Transport Block (TB)), reference signal (Reference Signal (RS)), antenna port (e.g. demodulation reference signal (DeModulation Reference Signal (DMRS)) port), antenna port group (e.g. DMRS port group), Group (e.g., spatial relationship group, Code Division Multiplexing (CDM) group, reference signal group, CORESET group, Physical Uplink Control Channel (PUCCH) group, PUCCH resource group), resource (e.g., reference signal resource, SRS resource), resource set (for example, reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI State (unified TCI state), common TCI state (common TCI state), Quasi-Co-Location (QCL), QCL assumption, etc. may be read interchangeably.

In the present disclosure, beams, spatial domain filters, spatial settings, TCI states, UL TCI states, unified TCI states, unified beams, common TCI states, common beams, TCI assumptions, QCL assumptions, QCL parameters, spatial Domain Receive Filter, UE Spatial Domain Receive Filter, UE Receive Beam, DL Beam, DL Receive Beam, DL Precoding, DL Precoder, DL-RS, TCI State/QCL Assumed QCL Type D RS, TCI State/QCL Assumed QCL type A RS, spatial relationship, spatial domain transmit filter, UE spatial domain transmit filter, UE transmit beam, UL beam, UL transmit beam, UL precoding, UL precoder, PL-RS may be read interchangeably. In this disclosure, QCL type X-RS, DL-RS associated with QCL type X, DL-RS with QCL type X, source of DL-RS, SSB, CSI-RS, SRS, may be read interchangeably. good.

In this disclosure, multi-TRP, channels with multi-TRP, channels with multiple TCI state/spatial relationships, multi-TRP enabled by RRC/DCI, multiple TCI state/spatial relationships enabled by RRC/DCI and at least one of multi-TRP based on a single DCI and multi-TRP based on multiple DCIs may be read interchangeably. In this disclosure, multi-TRPs based on multi-DCI, setting a CORESET pool index (CORESETPoolIndex) value of 1 for a CORESET, may be read interchangeably. In this disclosure, multiple TRPs based on a single DCI, where at least one codepoint of a TCI field is mapped to two TCI states, may be read interchangeably.

In this disclosure, single DCI (sDCI), single PDCCH, multi-TRP system based on single DCI, sDCI-based MTRP, activating two TCI states on at least one TCI codepoint may be read interchangeably. .

In the present disclosure, multi-DCI (mDCI), multi-PDCCH, multi-TRP system based on multi-DCI, mDCI-based MTRP, two CORESET pool indices or CORESET pool index = 1 (or a value of 1 or more) is set You may read each other.

In this disclosure, the description "Rel.XX" indicates the release number of 3GPP. However, the number "XX" is an example and may be replaced with another number.

In the present disclosure, the L1 beam report, beam report, and CSI report may be read interchangeably. Reports, measurements, and instructions may be read interchangeably. Activating/deactivating the TCI state and updating the TCI state may be read interchangeably.

(Wireless communication method)
In the following, for the first to fifth embodiments, it is assumed assumption 1 above that the same TCI state (joint DL/UL TCI state) is applied to the DL and UL. For the sixth to twelfth embodiments, assume assumption 2 above that separate TCI states (separate DL/UL TCI states) are applied for DL and UL respectively.

<First embodiment>
The UE shall indicate that activation/deactivation of the TCI state is initiated by the UE by means of RRC/MAC CE/DCI if the same TCI state (joint DL/UL TCI state) is applied for DL and UL. A specific setting may be received from the base station to enable/disable the . The specific setting may be a setting for each case (combination of M and N), or one setting may correspond to a plurality of cases. Upon receiving such configuration, the UE may initiate TCI state activation. The function of UE-initiated TCI state activation/deactivation may be referred to as a specific function. Activating/deactivating a TCI state may indicate updating an active TCI state.

"Start", "control", "determine", "report", and "triggered by an event" may be read interchangeably. The events (conditions) for activating/reporting beam/TCI status may be predefined in the specification or may be set/directed by higher layer/physical layer signaling. An event is, for example, that the current beam intensity becomes worse than the intensity of another beam.

UE activates the TCI state by RRC IE/MAC CE/UCI/Random Access Channel (RACH) (Contention-based Random Access (CBRA)/Contention-Free Random Access (CFRA))/Scheduling Request (SR). A specific report may be sent indicating whether to enable/disable being initiated by the .

[Option 1-1]
The UE may send the specific report separately from other information. The UE may, for example, send a new MAC CE indicating that certain features are enabled/disabled.

[Option 1-2]
The UE may send the specific report along with information indicating recommended beams. The recommended beam may be, for example, the best (most intense) beam determined based on beam strength (eg, RSRP, SINR). The UE may, for example, add a specific report (indication, indication, field) to the existing L1 beam report to indicate whether the reported L1 beam is for active TCI state update (active TCI state used for updating/directing).

[Option 1-3]
The UE may send the specific report with information indicating the recommended TCI state. The UE may, for example, send a new report containing specific reports and recommended TCI states. The new report may indicate whether the recommended TCI status is for updating the active TCI status (whether it is used to update/indicate the active TCI status). The recommended TCI state may correspond to the recommended beams described above. Therefore, the method for determining the recommended TCI state may be similar to the method for determining the recommended beam.

[Option 1-4]
The UE may not send specific reports as explicit information, but may send implicit information corresponding to specific reports. The UE may, for example, transmit only the recommended TCI states. The reported recommended TCI state may be meant for (used to update) the active TCI state. The UE may, for example, only transmit L1 beam reports. It may be implied that the reported L1 beam reports are for active TCI state updates (used for active TCI state updates).

It should be noted that only one of the above-described specific settings by the base station (eg, gNB) and specific reporting by the UE may be supported, or both may be supported. If both are supported, specific reporting by the UE may follow specific settings sent by the base station.

According to this embodiment, the UE can activate the appropriate TCI state by initiating activation/deactivation of the TCI state.

<Second embodiment>
The UE updates the i (first number) active TCI states to the new p (second number) active TCI states based on the DL L1 beam reports (CSI reports) (e.g., j beam reports). It may update to the TCI status. i may be the same as p (eg, p=i) or may be different. For example, p=j. i and j in each embodiment may be different numerical values from M and N shown in the above (unified/common TCI framework), or may be the same numerical values.

FIG. 4 is a diagram showing an example of TCI state update in the second embodiment. As shown in FIG. 4, i TCI states are updated to p active TCI states by j beam reports. p=i or p=j. The first TCI state (1st TCI state) is, for example, the best TCI state (eg, the TCI state corresponding to the largest L1-RSRP/SINR value). Note that the best TCI conditions may be the same as the recommended TCI conditions described above.

The UE may update the i active TCI states to associate with each i beam. The UE updates, for example, to associate the 1st/last TCI state with the 1st beam (SSB/CSI-RS) and the 2nd/penultimate TCI state with the 2nd beam (SSB/CSI-RS). −RS) and the kth/i−k+1th TCI state may be updated to associate with the kth beam (SSB/CSI-RS). SSB and SSBRI may be read interchangeably. CSI-RS and CRI may be read interchangeably.

At least the following options 2-1-1 to 2-1-3 for the method of updating the original i TCI states set in QCL type 1 (qcl-Type1) / QCL type 2 (qcl-Type2) One may apply. Reference Signal (RS) in the present disclosure may be SSB/CSI-RS, for example.

[Option 2-1-1]
The UE may update RSs in both QCL type 1 and QCL type 2 in TCI state (if both RSs are present).

[Option 2-1-2]
The UE may update the RS in either QCL type 1 and QCL type 2 of the TCI state. This RS may be accompanied by a specific QCL type. The specific QCL type may be QCL type D or any other QCL type.

[Option 2-1-3]
The UE does not update the RS corresponding to the i TCI states, but may seek (determine/identify) the TCI states from the RRC-configured TCI pool. The UE may for example find (determine/identify) up to j TCI states that are QCL related to the reported beams from the RRC configured TCI pool.

Next, the updating of the TCI state for each relationship between i, p, and j will be described (for option 2-1-1/2-1-2).

[i≧j]
The first/last j active TCI states are updated to the new RS/beam, and the remaining (ij) TCI states may remain activated and not updated (p=i). Alternatively, the first/last j active TCI states may be updated to the new RS/beam and the remaining (ij) TCI states may be deactivated (p=j).

[i<j]
i active TCI states may be updated to new RS/beams (p=i) or i active TCI states may be updated to new RS/beams and additional (ji) A TCI state may also be activated (p=j).

According to this embodiment, the UE can appropriately update the active TCI states regardless of the number of active TCI states.

<Third Embodiment>
The UE may update the i (first number) active TCI states to the new p (second number) active TCI states based on the new report of the recommended TCI states. The TCI states may be j TCI states, for example, the TCI states in options 1-3 and 1-4 of the first embodiment.

FIG. 5 is a diagram showing an example of updating the TCI status in the third embodiment. As shown in FIG. 5, i TCI states are updated to p active TCI states by reported j TCI states. p=i or p=j. The first TCI state (1st TCI state) is, for example, the best TCI state (eg, the TCI state corresponding to the largest L1-RSRP/SINR value).

The UE may make the new report via the RRC IE/MAC CE/UCI. When MAC CE is used, the configuration of MAC CE may be similar to the configuration of existing MAC CE regarding activation/deactivation of the TCI state of PDSCH.

The new report may be a P/SP/AP-CSI report (eg L1 beam) or an event-triggered beam report. In the present disclosure, event-based beam reporting, event occurrence-based beam reporting, event-triggered beam reporting, and event triggered beam reporting may be read interchangeably.

The UE may transmit (report) the new report separately from the existing (other) reports, or transmit (report) it together with the existing (other) reports.

Either of the following options 3-1 and 3-2 may be applied to updating the state of the TCI in this embodiment.

[Option 3-1]
The UE may update the reported j TCI states as active TCI states (p=j). The UE may, for example, update the first reported TCI state as the first active TCI state.

[Option 3-2]
The UE replaces the first TCI state/last TCI state of the i TCI states with the first reported TCI state, and the second reported TCI state with the and the kth reported TCI state may replace the kth/i−k+1th TCI state (p=i). For example, if i<j, then only i TCI states are replaced. If i≧j, the remaining (ij) TCI states may remain active and not be updated.

According to this embodiment, the UE can appropriately update the active TCI states regardless of the number of active TCI states.

<Fourth Embodiment>
At least one of the following options 4-1 to 4-3 may be applied for the timing (timeline) at which the UE applies the updated P active TCI states.

[Option 4-1]
The timing is after a specific period of time (eg, x slots/minislots/symbols) from the timing at which the UE transmits the beam report/TCI status report, as in the second/third embodiments. (x=0 or x>0).

[Option 4-2]
The timing is a specific period (e.g., x slots /minislot/symbol). x may be, for example, the number of symbols from the last symbol of PDCCH reception with a particular DCI format. A particular DCI format schedules PUSCH transmissions corresponding to the same HARQ process number as the HARQ process number for the first PUSCH transmission that carries the beam/TCI status report, and has toggled NDI field values.

[Option 4-3]
The timing may be a certain time period (eg, x slots/minislots/symbols) after the timing at which the UE receives the response from the base station for confirmation. The response may be, for example, a new MAC CE, a new DCI (e.g. DCI with new fields, a DCI with a specific DCI format, or a DCI with a specific RNTI, etc.), or a new beam indication (TCI state activation/indication etc.).

According to this embodiment, the updated active TCI state can be applied at appropriate timing.

<Fifth Embodiment>
After updating the TCI states, if the number of active TCI states P is multiple (P>1), P active TCI states for beam pointing of any channel (PDCCH/PDSCH/PUCCH/PUSCH, etc.) information is received by the DCI indicating the TCI state of one of the For example, if P=1, M=N=1, the active TCI state is the indicated TCI state.

A case other than M=N=1 (for example, M=1 and N=2, M=2 and N=1, M=2 and N=2) will be described.

[Regarding PDSCH/PUSCH from single DCI-based multi-TRP]
When applying single DCI-based multi-TRP, the i active TCI states before update corresponding to PDSCH/PUSCH are i sets of TCI states activated by MAC CE, each set with one Or it may contain two TCI states.

When applying the example of the second embodiment, the UE may use the two beams of each group in group-based beam reporting to update the two TCI states of each set. The UE may update one TCI state for each set using beams for non-group based beam reporting.

Alternatively, when applying the example of the second embodiment, the UE may use two separate non-group based beam reports. The UE may update the first TCI state of each set based on the first beam report and update the second TCI state of each set based on the second beam report.

When applying the example of the third embodiment, the UE may report p sets of TCI states via RRC/MAC CE/UCI. There may be one or two TCI states in each set.

[Regarding PDSCH/PUSCH from multi-DCI-based multi-TRP]
When applying multi-DCI based multi-TRP, the i active TCI states corresponding to PDSCH/PUSCH are updated/configured per CORESET pool index. For example, in all TRPs, up to 2i active TCI states are updated/set.

When applying the example of the second embodiment, the UE may use the two beams of each group from the group-based beam report to update the TCI state corresponding to each CORESET pool index.

Alternatively, when applying the example of the second embodiment, two separate non-group based beam reports may be used. The UE may update the TCI state corresponding to the CORESET pool index based on each beam report.

When applying the example of the third embodiment, the UE may report p TCI states corresponding to each CORESET pool index by RRC/MAC CE/UCI. For example, up to 2p TCI states are reported for all TRPs. The 2p TCI states may be included in one report or may be included in separate reports corresponding to different TRPs.

According to this embodiment, the active TCI state can be indicated appropriately even when multi-TRP is applied.

<Sixth Embodiment>
Applying Assumption 2 described above, the same processing as in the first embodiment may be applied. The UE may activate/deactivate DL/UL TCI state by RRC/MAC CE/DCI if different TCI states are applied for DL and UL respectively (separate DL/UL TCI state). A specific setting may be received from the base station to enable/disable UE-initiated. Initiation may be translated into determination/reporting. Upon receiving such configuration, the UE may initiate TCI state activation.

The UE reports specific reporting via RRC IE/MAC CE/UCI/RACH (CBRA/CFRA)/SR indicating whether to enable/disable UE initiated activation of UL/DL TCI states. You may send. Differences between the processing of the present embodiment to which Assumption 2 is applied and the processing of the first embodiment will be mainly described below.

[Option 6-1]
The UE may be configured/indicated by the base station and reported by the UE for DL/UL TCI state activation separately for DL/UL. The setting/instruction by the base station is, for example, the specific setting of the first embodiment. The reporting by the UE may be, for example, the specific reporting in the first embodiment, the reporting in the second/third embodiments. The UE may send different reports, or in different formats/signaling designs, for DL beam/TCI status and UL beam/TCI status. The second/third embodiment may be used for DL beam/TCI status reporting. In addition, the seventh/eighth embodiments, which will be described later, may be applied to the reporting of the UL beam/TCI status.

[Option 6-2]
There may be one configuration/indication by the base station, reporting by the UE for activation of DL/UL (both) TCI states. When the UE reports the beam/TCI status, the UE may send both the DL beam/TCI status and the UL beam/TCI status in one report. For example, the ninth/tenth embodiments described later may be applied.

According to this embodiment, even if separate DL/UL TCI states are applied, the UE can activate the appropriate TCI state by initiating activation/deactivation of the TCI state.

<Seventh embodiment>
The UE reports i (first number) UL active TCI states based on at least one of UL L1 beam reports (CSI reports), PHR, MPE reports (for example, corresponding to j UL beams). It may update to the new p (second number) UL active TCI states.

"PHR", "PH", "PH field", and "PH value" may be read interchangeably. MPE, MPR, and P-MPR may be read interchangeably. The UE may update the TCI state corresponding to the beam with the highest PH value to the active TCI state. The UE may update the TCI state corresponding to the beam satisfying the MPE requirements to the active TCI state.

The UE may, for example, transmit UL L1 beam reports using the CSI reporting framework, or may transmit using MAC CE together with PHR/MPE.

Based on the beam measurement settings, the UE may report (transmit) MAC CE, etc. information indicating beams that satisfy the MPE requirements (MPE safe beams). The UE may then select a beam to use from beams that satisfy the MPE requirements. MPE-safe beams may be referred to as MPE-compatible beams. Measurements/reports on MPE safe beams may be referred to as MPE safe beam measurements/reports, novel beam measurements/reports.

The UE determines beams that do not work for MPE (has MPE problems, does not meet MPE requirements), and the selected beam (e.g., the beam indicated by the instructions from the base station) is determined not to meet MPE requirements. If so, the beam to use may be re-selected (re-determined) based on values based on the MPE requirements.

　The UL beam reporting setting and the DL beam reporting setting may be separated. For example, the UE may receive a first information element containing the UL beam report configuration and a second CSI information element containing the DL beam report configuration and different from the first information element via higher layer signaling. . Information elements are, for example, CSI reporting settings.

Alternatively, the UE may receive DL beam reporting configuration (joint beam measurement/reporting configuration for UL and DL) along with UL beam reporting configuration. For example, the UE may receive one information element containing both UL beam reporting configuration and DL beam reporting configuration via higher layer signaling. UL beam reporting may be supported in addition to DL beam reporting (eg L1-RSRP or L1-SINR). That is, UL beam reporting may be configured only if DL beam reporting is configured.

Assuming Assumption 2, the second embodiment may be reused for the update method from i TCI states to p TCI states based on j UL beams.

According to this embodiment, an appropriate TCI state can be activated by considering L1 beam reports (CSI reports), PHR, and MPE reports.

<Eighth Embodiment>
The UE replaces the i (first number) active UL TCI states with the new p (second number) active UL TCI states based on the new report of the UL recommended TCI states (eg, j). status may be updated.

The UE may make the new report via the RRC IE/MAC CE/UCI. When MAC CE is used, the configuration of MAC CE may be similar to the configuration of existing MAC CE regarding activation/deactivation of the TCI state of PDSCH.

The new report may be a P/SP/AP-CSI report (eg L1 beam) or an event-triggered beam report. In the present disclosure, event-based beam reporting, event-occurrence-based beam reporting, event-triggered beam reporting, and event-triggered beam reporting may be read interchangeably.

The UE may transmit (report) the new report separately from the existing (other) reports, or transmit (report) it together with the existing (other) reports.

The processing of this embodiment may reuse the processing of the third embodiment on the premise of Assumption 2 above. According to this embodiment, the UE can properly update the active TCI states regardless of the number of active TCI states.

<Ninth Embodiment>
UE updates i1 active DL TCI states to new p1 based on DL L1 beam report (corresponding to j1 beams) and UL L1 beam report (corresponding to j2 beams) sent as one report active DL TCI states (see FIG. 6A), and the i2 active UL TCI states may be updated to the new p2 active UL TCI states (see FIG. 6B). i1 may be the same as p1 (p1=i1) or different (eg p1=j1). i2 may be the same as p2 (p2=i2) or different (eg p2=j2).

For the processing of this embodiment, the second embodiment may be reused on the premise of Assumption 2 above. In this case, the TCI state of the second embodiment may be read as at least one of the DL TCI state and the UL TCI state.

According to this embodiment, the UE can appropriately update the active TCI states regardless of the number of active TCI states.

<Tenth Embodiment>
Based on the DL TCI status report (corresponding to j1 TCI states) and the UL TCI status report (corresponding to j2 TCI states) sent by the UE as one RRC IE/MAC CE/UCI report, Even if i1 active DL TCI states are updated to new p1 active DL TCI states (see FIG. 7A) and i2 active UL TCI states are updated to new p2 active UL TCI states. Good (see Figure 7B). i1 may be the same as p1 (p1=i1) or different (eg p1=j1). i2 may be the same as p2 (p2=i2) or different (eg p2=j2). The reported DL TCI status, UL TCI status may be the recommended DL TCI status, recommended UL TCI status.

The processing of this embodiment may reuse the processing of the third embodiment on the premise of Assumption 2 above. In this case, the TCI state of the third embodiment may be read as at least one of the DL TCI state and the UL TCI state.

For j1 DL TCI states and j2 UL TCI states, the UE may report a TCI state corresponding to both DL and UL, a TCI state corresponding to DL only, and a TCI state corresponding to UL only, respectively. good.

According to this embodiment, the UE can appropriately update the active TCI states regardless of the number of active TCI states.

<Eleventh Embodiment>
If separate DL/UL TCI state reporting and activation are applied, the fourth embodiment may be applied to DL TCI state and UL TCI state respectively. If DL/UL beam/TCI status is reported in one report, the fourth embodiment may be applied to DL beam/TCI status and UL beam/TCI status simultaneously.

According to this embodiment, the updated active TCI state can be applied at appropriate timing.

<Twelfth Embodiment>
An example in which the separate TCI state is applied and M=N=other than 1 (for example, M=1 and N=2, M=2 and N=1, M=2 and N=2) will be described.

[Regarding PDSCH/PUSCH from single DCI-based multi-TRP]
If M=2, the i1 active DL TCI states before update are the i1 sets of DL TCI states activated by the MAC CE, each set corresponding to one or two TCI states. You may have

For N=2, the i2 active UL TCI states before update are the i2 sets of active UL TCI states by the MAC CE, each set corresponding to one or two TCI states. may

[Regarding PDSCH/PUSCH from multi-DCI-based multi-TRP]
For multi-DCI-based, multi-TRP, i1 active DL TCI states or i2 active UL TCI states corresponding to PDSCH/PUSCH are updated/configured per CORESET pool index. For example, up to 2i1 active DL TCI states or up to 2i2 active UL TCI states are updated/set in all TRPs.

Assuming Assumption 2, the fifth embodiment may be reused. In that case, the TCI state of the fifth embodiment may be at least one of the UL TCI state and the DL TCI state.

According to this embodiment, the active TCI state can be indicated appropriately even when multi-TRP is applied.

<UE capability>
The UE may send (report) UE capability information to the network (base station) indicating whether it supports at least one of the examples in this disclosure. At least one of the examples in this disclosure may only apply to UEs that have sent specific UE capability information or support the specific UE capability. Also, the UE may receive information via higher layer/physical layer signaling indicating at least one of the examples in this disclosure. The information may correspond to UE capability information sent by the UE. The UE capability information may be, for example, at least one of (1) to (5) below.

(1) UE-initiated DL/UL TCI when applying at least one of joint/separate DL/UL TCI states, various M, N values, single DCI/multi-DCI multi-TRP cases Whether to support state activation.
(2) Whether to support configuration by the base station (eg, gNB) in the present disclosure (eg, configuration by RRC/MAC CE/DCI).
(3) whether to support at least one of reporting/indication by the UE in this disclosure;
(4) Whether to report the UE recommended DL/UL TCI status by RRC/MAC CE/UCI. Whether the report is a P/SP/AP CSI report or an event-triggered beam report. For separate DL/UL TCI, one report for DL/UL or separate reports?
(5) Restrictions on i, p, j (for joint DL/UL TCI), i1, p1, j1, i2, p2, j2 (for separate DL/UL TCI). For example, P≦8, P≦M, P≦N, N≦4 or 8, and the like.

(wireless communication system)
A configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this radio communication system, communication is performed using any one of the radio communication methods according to the above embodiments of the present disclosure or a combination thereof.

FIG. 8 is a diagram showing an example of a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc. specified by the Third Generation Partnership Project (3GPP). .

The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC is dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)), etc. may be included.

In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

The wireless communication system 1 has dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC) in which both MN and SN are NR base stations (gNB) )) may be supported.

A wireless communication system 1 includes a base station 11 forming a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) arranged in the macrocell C1 and forming a small cell C2 narrower than the macrocell C1. You may prepare. A user terminal 20 may be located within at least one cell. The arrangement, number, etc. of each cell and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, the base stations 11 and 12 are collectively referred to as the base station 10 when not distinguished.

The user terminal 20 may connect to at least one of the multiple base stations 10 . The user terminal 20 may utilize at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

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

Also, the user terminal 20 may communicate using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

A plurality of base stations 10 may be connected by wire (for example, an optical fiber conforming to Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station is an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) is an IAB Also called a node.

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

The user terminal 20 may be a terminal compatible with at least one of communication schemes such as LTE, LTE-A, and 5G.

In the radio communication system 1, a radio access scheme based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of Downlink (DL) and 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.

A radio access method may be called a waveform. Note that in the radio communication system 1, other radio access schemes (for example, other single-carrier transmission schemes and other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

In the radio communication system 1, as downlink channels, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)) or the like may be used.

In the radio communication system 1, as uplink channels, an uplink shared channel (PUSCH) shared by each user terminal 20, an uplink control channel (PUCCH), a random access channel (Physical Random Access Channel (PRACH)) or the like may be used.

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

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 for at least one of PDSCH and PUSCH.

The DCI that schedules PDSCH may be called DL assignment, DL DCI, etc., and the DCI that schedules PUSCH may be called UL grant, UL DCI, etc. PDSCH may be replaced with DL data, and PUSCH may be replaced with UL data.

A control resource set (CControl Resource SET (CORESET)) and a search space (search space) may be used for PDCCH detection. CORESET corresponds to a resource searching for DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET may be associated with one or more search spaces. The UE may monitor CORESETs associated with certain search spaces based on the search space settings.

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 "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting", etc. in the present disclosure may be read interchangeably.

By PUCCH, channel state information (CSI), acknowledgment information (for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK/NACK, etc.) and scheduling request (Scheduling Request ( SR)) may be transmitted. A random access preamble for connection establishment with a cell may be transmitted by the PRACH.

In addition, in the present disclosure, downlink, uplink, etc. may be expressed without adding "link". Also, various channels may be expressed without adding "Physical" to the head.

In the wireless communication system 1, synchronization signals (SS), downlink reference signals (DL-RS), etc. may be transmitted. In the radio communication system 1, the DL-RS includes a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DeModulation Reference Signal (DMRS)), Positioning Reference Signal (PRS)), Phase Tracking Reference Signal (PTRS)), etc. may be transmitted.

The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called SS/PBCH block, SS Block (SSB), and so on. Note that SS, SSB, etc. may also be referred to as reference signals.

Also, in the radio communication system 1, even if measurement reference signals (SRS), demodulation reference signals (DMRS), etc. are transmitted as uplink reference signals (UL-RS), good. Note that DMRS may also be called a user terminal-specific reference signal (UE-specific reference signal).

(base station)
FIG. 9 is a diagram illustrating an example of the configuration of a base station according to one embodiment. The base station 10 comprises a control section 110 , a transmission/reception section 120 , a transmission/reception antenna 130 and a transmission line interface 140 . One or more of each of the control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission line interface 140 may be provided.

It should be noted that this example mainly shows the functional blocks that characterize the present embodiment, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 110 controls the base station 10 as a whole. The control unit 110 can be configured from a controller, a control circuit, and the like, which are explained based on common recognition in the technical field according to the present disclosure.

The control unit 110 may control signal generation, scheduling (eg, resource allocation, mapping), and the like. The control unit 110 may control transmission/reception, measurement, etc. using the transmission/reception unit 120 , the transmission/reception antenna 130 and the transmission line interface 140 . The control unit 110 may generate data to be transmitted as a signal, control information, a sequence, etc., and transfer them to the transmission/reception unit 120 . The control unit 110 may perform call processing (setup, release, etc.) of communication channels, state management of the base station 10, management of radio resources, and the like.

The transmitting/receiving section 120 may include a baseband section 121 , a radio frequency (RF) section 122 and a measuring section 123 . The baseband section 121 may include a transmission processing section 1211 and a reception processing section 1212 . The transmitting/receiving unit 120 is configured from a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting/receiving circuit, etc., which are explained based on common recognition in the technical field according to the present disclosure. be able to.

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

The transmitting/receiving antenna 130 can be configured from an antenna described based on common recognition in the technical field related to the present disclosure, such as an array antenna.

The transmitting/receiving unit 120 may transmit the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transmitting/receiving unit 120 may receive the above-described uplink channel, uplink reference signal, and the like.

The transmitting/receiving unit 120 may form at least one of the transmission beam and the reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.

The transmission/reception unit 120 (transmission processing unit 1211) performs Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. may be performed to generate a bit string to be transmitted.

The transmission/reception unit 120 (transmission processing unit 1211) performs channel coding (which may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (DFT) on the bit string to be transmitted. Processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, transmission processing such as digital-to-analog conversion may be performed, and the baseband signal may be output.

The transmitting/receiving unit 120 (RF unit 122) may perform modulation to a radio frequency band, filter processing, amplification, and the like on the baseband signal, and may transmit the radio frequency band signal via the transmitting/receiving antenna 130. .

On the other hand, the transmitting/receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 130.

The transmission/reception unit 120 (reception processing unit 1212) performs analog-to-digital conversion, Fast Fourier transform (FFT) processing, and Inverse Discrete Fourier transform (IDFT) processing on the acquired baseband signal. )) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing. User data and the like may be acquired.

The transmitting/receiving unit 120 (measuring unit 123) may measure the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, etc. based on the received signal. The measurement unit 123 measures received power (for example, Reference Signal Received Power (RSRP)), reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)) , signal strength (for example, Received Signal Strength Indicator (RSSI)), channel information (for example, CSI), and the like may be measured. The measurement result may be output to control section 110 .

The transmission path interface 140 transmits and receives signals (backhaul signaling) to and from devices included in the core network 30, other base stations 10, etc., and user data (user plane data) for the user terminal 20, control plane data, and the like. Data and the like may be obtained, transmitted, and the like.

Note that the transmitter and receiver of the base station 10 in the present disclosure may be configured by at least one of the transmitter/receiver 120, the transmitter/receiver antenna 130, and the transmission line interface 140.

Note that the transmitter/receiver 120 enables activation of the TCI state to be initiated by the UE when the same Transmission Configuration Indication (TCI) state is applied for the downlink (DL) and uplink (UL). Or you may send specific settings to disable. The control unit 110 may control transmission and reception based on the TCI state activated by the terminal. Transceiver 120 may receive a specific report indicating whether to enable or disable UE-initiated activation of the TCI state.

Transmitter/receiver 120 activates at least one of the UL and DL TCI states when different Transmission Configuration Indication (TCI) states apply to each of the downlink (DL) and uplink (UL). A specific setting may be sent to enable or disable UE-initiated activation. The control unit 110 may control transmission and reception based on the TCI state activated by the terminal.

(user terminal)
FIG. 10 is a diagram illustrating an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control section 210 , a transmission/reception section 220 and a transmission/reception antenna 230 . One or more of each of the control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving antenna 230 may be provided.

It should be noted that this example mainly shows the functional blocks of the features of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 210 controls the user terminal 20 as a whole. The control unit 210 can be configured from a controller, a control circuit, and the like, which are explained based on common recognition in the technical field according to the present disclosure.

The control unit 210 may control signal generation, mapping, and the like. 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 .

The transmitting/receiving section 220 may include a baseband section 221 , an RF section 222 and a measurement section 223 . The baseband section 221 may include a transmission processing section 2211 and a reception processing section 2212 . The transmitting/receiving unit 220 can be configured from a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting/receiving circuit, etc., which are explained based on common recognition in the technical field according to the present disclosure.

The transmission/reception unit 220 may be configured as an integrated transmission/reception unit, or may be configured from a transmission unit and a reception unit. The transmission section may be composed of a transmission processing section 2211 and an RF section 222 . The receiving section may include a reception processing section 2212 , an RF section 222 and a measurement section 223 .

The transmitting/receiving antenna 230 can be configured from an antenna described based on common recognition in the technical field related to the present disclosure, such as an array antenna.

The transmitting/receiving unit 220 may receive the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transmitting/receiving unit 220 may transmit the above-described uplink channel, uplink reference signal, and the like.

The transmitter/receiver 220 may form at least one of the transmission beam and the reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.

The transmission/reception unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, for data and control information acquired from the control unit 210, for example , HARQ retransmission control), etc., to generate a bit string to be transmitted.

The transmitting/receiving unit 220 (transmission processing unit 2211) performs channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), and IFFT processing on a bit string to be transmitted. , precoding, digital-analog conversion, and other transmission processing may be performed, and the baseband signal may be output.

Whether or not to apply DFT processing may be based on transform precoding settings. Transmitting/receiving unit 220 (transmission processing unit 2211), for a certain channel (for example, PUSCH), if transform precoding is enabled, the above to transmit the channel using the DFT-s-OFDM waveform The DFT process may be performed as the transmission process, or otherwise the DFT process may not be performed as the transmission process.

The transmitting/receiving unit 220 (RF unit 222) may perform modulation to a radio frequency band, filter processing, amplification, and the like on the baseband signal, and may transmit the radio frequency band signal via the transmitting/receiving antenna 230. .

On the other hand, the transmitting/receiving section 220 (RF section 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 230.

The transmission/reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (error correction) on the acquired baseband signal. decoding), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.

The transmitting/receiving section 220 (measuring section 223) may measure the received signal. For example, the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal. The measuring unit 223 may measure received power (eg, RSRP), received quality (eg, RSRQ, SINR, SNR), signal strength (eg, RSSI), channel information (eg, CSI), and the like. The measurement result may be output to control section 210 .

Note that the transmitter and receiver of the user terminal 20 in the present disclosure may be configured by at least one of the transmitter/receiver 220 and the transmitter/receiver antenna 230 .

Note that if the same Transmission Configuration Indication (TCI) state is applied for the downlink (DL) and uplink (UL), the transceiver 220 enables activation of the TCI state to be initiated by the UE. Or it may receive specific settings to override. Controller 210 may initiate activation of the TCI state. Transceiver 220 may transmit a specific report indicating whether to enable or disable UE-initiated activation of the TCI state.

The controller 210 may update the first number of active TCI states to the new second number of active TCI states based on the channel state information (CSI) report.

The control unit 210 may update the first number of active TCI states to a new second number of active TCI states based on the TCI state report.

Transmitter/receiver 220 activates at least one of the TCI states of UL and DL when different Transmission Configuration Indication (TCI) states apply to each of downlink (DL) and uplink (UL). A specific setting may be received that enables or disables UE-initiated activation. Controller 210 may initiate activation of the TCI state. The transceiver 220 may transmit a specific report indicating whether to enable or disable UE initiated activation of at least one of the UL and DL TCI states.

The control unit 210 determines the first number of active UL TCI states based on at least one of a UL channel state information (CSI) report, a Power Headroom Report (PHR), and a Maximum Permitted Exposure (MPE) report, It may update to a second number of new active UL TCI states.

The control unit 210 may update the first number of active UL TCI states to a new second number of active UL TCI states based on the reporting of the UL TCI states.

(Hardware configuration)
It should be noted that the block diagrams used in the description of the above embodiments show blocks in units of functions. These functional blocks (components) are realized by any combination of at least one of hardware and software. Also, the method of implementing each functional block is not particularly limited. That is, each functional block may be implemented using one device that is physically or logically coupled, or directly or indirectly using two or more devices that are physically or logically separated (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices. A functional block may be implemented by combining software in the one device or the plurality of devices.

where function includes judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, deem , broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. Not limited. For example, a functional block (component) that performs transmission may be called a transmitting unit, a transmitter, or the like. In either case, as described above, the implementation method is not particularly limited.

For example, a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 11 is a diagram illustrating an example of hardware configurations of a base station and a user terminal according to one embodiment. The base station 10 and user terminal 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. .

In the present disclosure, terms such as apparatus, circuit, device, section, and unit can be read interchangeably. The hardware configuration 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 some devices.

For example, although only one processor 1001 is illustrated, there may be multiple processors. Also, processing may be performed by one processor, or processing may be performed by two or more processors concurrently, serially, or otherwise. Note that processor 1001 may be implemented by one or more chips.

Each function in the base station 10 and the user terminal 20, for example, by loading predetermined software (program) on hardware such as a processor 1001 and a memory 1002, the processor 1001 performs calculations, communication via the communication device 1004 and at least one of reading and writing data in the memory 1002 and the storage 1003 .

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

Also, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them. As the program, a program that causes a computer to execute at least part of the operations described in the above embodiments is used. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and other functional blocks may be similarly implemented.

The memory 1002 is a computer-readable recording medium, such as Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or at least any other suitable storage medium. may be configured by one. The memory 1002 may also be called a register, cache, main memory (main storage device), or the like. The memory 1002 can store executable programs (program code), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

The storage 1003 is a computer-readable recording medium, for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, Blu-ray disc), removable disc, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium may be configured by Storage 1003 may also be called an auxiliary storage device.

The communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like. The communication device 1004 includes a high-frequency switch, duplexer, filter, frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD), for example. may be configured to include For example, the transmitting/receiving unit 120 (220), the transmitting/receiving antenna 130 (230), and the like described above may be realized by the communication device 1004. FIG. The transmitter/receiver 120 (220) may be physically or logically separated into a transmitter 120a (220a) and a receiver 120b (220b).

The input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

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 between devices.

In addition, the base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc. It may be configured including hardware, and a part or all of each functional block may be realized using the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

(Modification)
The terms explained in this disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, channel, symbol and signal (signal or signaling) may be interchanged. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, a pilot signal, etc., depending on the applicable standard. A component carrier (CC) may also be called a cell, a frequency carrier, a carrier frequency, or the like.

A radio frame may consist of one or more periods (frames) in the time domain. Each of the one or more periods (frames) that make up a radio frame may be called a subframe. Furthermore, a subframe may consist of one or more slots in the time domain. A subframe may be of a fixed length of time (eg, 1 ms) independent of numerology.

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

A slot may consist of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain. A slot may also be a unit of time based on numerology.

A slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in time units larger than a minislot may be referred to as PDSCH (PUSCH) Mapping Type A. PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (PUSCH) mapping type B.

Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations. Note that time units such as frames, subframes, slots, minislots, and symbols in the present disclosure may be read interchangeably.

For example, one subframe may be called a TTI, a plurality of consecutive subframes may be called a TTI, and one slot or one minislot may be called a TTI. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms may be Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.

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

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

When one slot or one minislot is called a TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum scheduling time unit. Also, the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.

A TTI having a time length of 1 ms may be called a normal TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like. A TTI that is shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.

Note that the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms, and the short TTI (e.g., shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms A TTI having the above TTI length may be read instead.

A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the RB may be the same regardless of the neumerology, eg twelve. The number of subcarriers included in an RB may be determined based on neumerology.

Also, an RB may contain one or more symbols in the time domain and may be 1 slot, 1 minislot, 1 subframe or 1 TTI long. One TTI, one subframe, etc. may each be configured with one or more resource blocks.

One or more RBs are Physical Resource Block (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB pair, RB Also called a pair.

Also, a resource block may be composed of one or more resource elements (Resource Element (RE)). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

A Bandwidth Part (BWP) (which may also be called a bandwidth part) represents a subset of contiguous common resource blocks (RBs) for a numerology on a carrier. good too. Here, the common RB may be identified by an RB index based on the common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL). One or multiple BWPs may be configured for a UE within one carrier.

At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be read as "BWP".

It should be noted that the structures of radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples. For example, the number of subframes contained in a radio frame, the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers and the number of symbols in a TTI, symbol length, cyclic prefix (CP) length, etc. can be varied.

In addition, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information. may be represented. For example, radio resources may be indicated by a predetermined index.

The names used for parameters and the like in this disclosure are not restrictive names in any respect. Further, the formulas and the like using these parameters may differ from those expressly disclosed in this disclosure. Since the various channels (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. .

The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of

Also, information, signals, etc. can be output from a higher layer to a lower layer and/or from a lower layer to a higher layer. Information, signals, etc. may be input and output through multiple network nodes.

Input/output information, signals, etc. may be stored in a specific location (for example, memory), or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated or appended. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to other devices.

Notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure includes physical layer signaling (e.g., Downlink Control Information (DCI)), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or combinations thereof may be performed by

The physical layer signaling may also be called Layer 1/Layer 2 (L1/L2) control information (L1/L2 control signal), L1 control information (L1 control signal), and the like. RRC signaling may also be called an RRC message, and may be, for example, an RRC connection setup message, an RRC connection reconfiguration message, or the like. Also, MAC signaling may be notified using, for example, a MAC Control Element (CE).

In addition, notification of predetermined information (for example, notification of “being X”) is not limited to explicit notification, but implicit notification (for example, by not notifying the predetermined information or by providing another information by notice of

The determination may be made by a value (0 or 1) represented by 1 bit, or by a boolean value represented by true or false. , may be performed by numerical comparison (eg, comparison with a predetermined value).

Software, whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.

In addition, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) , a server, or other remote source, these wired and/or wireless technologies are included within the definition of transmission media.

The terms "system" and "network" used in this disclosure may be used interchangeably. A “network” may refer to devices (eg, base stations) included in a network.

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

In the present disclosure, "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. A base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.

A base station can accommodate one or more (eg, three) cells. When a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is assigned to a base station subsystem (e.g., a small indoor base station (Remote Radio)). Head (RRH))) may also provide communication services. The terms "cell" or "sector" refer to part or all of the coverage area of at least one of the base stations and base station subsystems that serve communication within such coverage.

In this disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" are used interchangeably. can be

Mobile stations include subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals. , a handset, a user agent, a mobile client, a client, or some other suitable term.

At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, or the like. At least one of the base station and the mobile station may be a device mounted on a moving object, the mobile itself, or the like.

The moving body refers to a movable object, the speed of movement is arbitrary, and it naturally includes cases where the moving body is stationary. Examples of such moving bodies include vehicles, transportation vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, and ships (ships and other watercraft). , airplanes, rockets, satellites, drones, multi-copters, quad-copters, balloons and objects mounted on them. Further, the mobile body may be a mobile body that autonomously travels based on an operation command.

The mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ). Note that at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations. For example, at least one of the base station and mobile station may be an Internet of Things (IoT) device such as a sensor.

FIG. 12 is a diagram showing an example of a vehicle according to one embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (current sensor 50, revolution sensor 51, air pressure sensor 52, vehicle speed sensor 53, acceleration sensor 54, accelerator pedal sensor 55, brake pedal sensor 56, shift lever sensor 57, and object detection sensor 58), information service unit 59 and communication module 60. Prepare.

The driving unit 41 is composed of, for example, at least one of an engine, a motor, and a hybrid of an engine and a motor. The steering unit 42 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

The electronic control unit 49 is composed of a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (eg, input/output (IO) port) 63. Signals from various sensors 50 to 58 provided in the vehicle are input to the electronic control unit 49 . The electronic control unit 49 may be called an Electronic Control Unit (ECU).

The signals from the various sensors 50 to 58 include a current signal from the current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46/rear wheels 47 obtained by the rotation speed sensor 51, and an air pressure sensor 52. air pressure signal of front wheels 46/rear wheels 47, vehicle speed signal obtained by vehicle speed sensor 53, acceleration signal obtained by acceleration sensor 54, depression amount signal of accelerator pedal 43 obtained by accelerator pedal sensor 55, brake pedal sensor The brake pedal 44 depression amount signal obtained by 56, the operation signal of the shift lever 45 obtained by the shift lever sensor 57, and the detection for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 58. There are signals.

The information service unit 59 includes various devices such as car navigation systems, audio systems, speakers, displays, televisions, and radios for providing (outputting) various information such as driving information, traffic information, and entertainment information, and these devices. and one or more ECUs that control The information service unit 59 provides various information/services (for example, multimedia information/multimedia services) to the occupants of the vehicle 40 using information acquired from an external device via the communication module 60 or the like.

The information service unit 59 may include an input device (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) that receives input from the outside, and an output device that outputs to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

The driving support system unit 64 includes millimeter wave radar, Light Detection and Ranging (LiDAR), camera, positioning locator (eg, Global Navigation Satellite System (GNSS), etc.), map information (eg, High Definition (HD)) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., inertial measurement units (IMU), inertial navigation systems (INS), etc.), artificial intelligence ( Artificial intelligence (AI) chips, AI processors, and other devices that provide functions to prevent accidents and reduce the driver's driving load, and one or more devices that control these devices ECU. In addition, the driving support system unit 64 transmits and receives various information via the communication module 60, and realizes a driving support function or an automatic driving function.

The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63 . For example, the communication module 60 communicates with the vehicle 40 through a communication port 63 such as a driving unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, Data (information) is transmitted and received between the axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58.

The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from an external device via wireless communication. Communication module 60 may be internal or external to electronic control 49 . The external device may be, for example, the above-described base station 10, user terminal 20, or the like. Also, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (and may function as at least one of the base station 10 and the user terminal 20).

The communication module 60 receives signals from the various sensors 50 to 58 described above input to the electronic control unit 49, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 59. may be transmitted to the external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be called an input unit that receives input. For example, the PUSCH transmitted by communication module 60 may include information based on the above inputs.

The communication module 60 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 59 provided in the vehicle. The information service unit 59 is an output unit that outputs information (for example, outputs information to devices such as displays and speakers based on the PDSCH received by the communication module 60 (or data/information decoded from the PDSCH)). may be called

Also, the communication module 60 stores various information received from an external device in a memory 62 that can be used by the microprocessor 61 . Based on the information stored in the memory 62, the microprocessor 61 controls the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, and the left and right rear wheels provided in the vehicle 40. 47, axle 48, and various sensors 50-58 may be controlled.

Also, the base station in the present disclosure may be read as a user terminal. For example, communication between a base station and a user terminal is replaced with communication between multiple user terminals (for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.) Regarding the configuration, each aspect/embodiment of the present disclosure may be applied. In this case, the user terminal 20 may have the functions of the base station 10 described above. In addition, words such as "uplink" and "downlink" may be replaced with words corresponding to communication between terminals (for example, "sidelink"). For example, uplink channels, downlink channels, etc. may be read as sidelink channels.

Similarly, user terminals in the present disclosure may be read as base stations. In this case, the base station 10 may have the functions of the user terminal 20 described above.

In the present disclosure, operations that are assumed to be performed by the base station may be performed by its upper node in some cases. In a network that includes one or more network nodes with a base station, various operations performed for communication with a terminal may involve the base station, one or more network nodes other than the base station (e.g., Clearly, this can be done by a Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. (but not limited to these) or a combination thereof.

Each aspect/embodiment described in the present disclosure may be used alone, may be used in combination, or may be used by switching along with 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, the methods described in this disclosure present elements of the various steps using a sample order, and are not limited to the specific order presented.

Each aspect/embodiment described in this disclosure includes 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 number)), 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®), IEEE 802.16 (WiMAX®), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth®, or any other suitable wireless communication method. It may be applied to a system to be used, a next-generation system extended, modified, created or defined based on these. Also, multiple systems may be applied in combination (for example, a combination of LTE or LTE-A and 5G).

The term "based on" as used in this disclosure does not mean "based only on" unless otherwise specified. In other words, the phrase "based on" means both "based only on" and "based at least on."

Any reference to elements using the "first," "second," etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, references to first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.

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

Also, "determining (deciding)" includes receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access ( accessing (e.g., accessing data in memory), etc.

Also, "determining" is considered to be "determining" resolving, selecting, choosing, establishing, comparing, etc. good too. That is, "determining (determining)" may be regarded as "determining (determining)" some action.

Also, "judgment (decision)" may be read as "assuming", "expecting", or "considering".

The terms “connected”, “coupled”, or any variation thereof, as used in this disclosure, refer to any connection or coupling, direct or indirect, 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. Couplings or connections between elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access".

In this disclosure, when two elements are connected, using one or more wires, cables, printed electrical connections, etc., and as some non-limiting and non-exhaustive examples, radio frequency domain, microwave They can be considered to be “connected” or “coupled” together using the domain, electromagnetic energy having wavelengths in the optical (both visible and invisible) domain, and the like.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean that "A and B are different from C". Terms such as "separate," "coupled," etc. may also be interpreted in the same manner as "different."

Where "include," "including," and variations thereof are used in this disclosure, these terms are inclusive, as is the term "comprising." is intended. Furthermore, the term "or" as used in this disclosure is not intended to be an exclusive OR.

In this disclosure, if articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are plural.

Although the invention according to the present disclosure has been described in detail above, 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 changes without departing from the spirit and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for illustrative purposes and does not impose any limitation on the invention according to the present disclosure.

Claims (6)

1. If the same Transmission Configuration Indication (TCI) state is applied for downlink (DL) and uplink (UL), a specific setting to enable or disable UE-initiated activation of said TCI state. a receiver for receiving
   a controller that initiates activation of the TCI state;
   terminal with
2. 2. The terminal of claim 1, further comprising a transmitter for transmitting a specific report indicating whether to enable or disable UE-initiated activation of the TCI state.
3. 3. The controller of claim 1 or claim 2, wherein the controller updates the first number of active TCI states to a new second number of active TCI states based on channel state information (CSI) reports. terminal.
4. The terminal according to claim 1 or 2, wherein the control unit updates a first number of active TCI states to a new second number of active TCI states based on the report of the TCI states.
5. If the same Transmission Configuration Indication (TCI) state is applied for downlink (DL) and uplink (UL), a specific setting to enable or disable UE-initiated activation of said TCI state. a step of receiving
   initiating activation of the TCI state;
   A wireless communication method for a terminal having
6. If the same Transmission Configuration Indication (TCI) state is applied for downlink (DL) and uplink (UL), a specific setting to enable or disable UE-initiated activation of said TCI state. a transmitter that transmits
   a control unit that controls transmission and reception based on the TCI state whose activation is initiated by the terminal;
   A base station with

Images