WO2023157252A1

WO2023157252A1 - Terminal, wireless communication method, and base station

Info

Publication number: WO2023157252A1
Application number: PCT/JP2022/006719
Authority: WO
Inventors: 春陽越後; 浩樹原田; 祐輝松村; 尚哉芝池; チーピンピ
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2023-08-24

Abstract

A terminal according to one aspect of the present disclosure comprises: a reception unit that receives configuration information including configuration relating to a transmission configuration indication (TCI) state to be applied to multiple types of channels, and a first indication relating to the TCI state and/or a second indication relating to the TCI state; and a control unit that, on the basis of information relating to the application start timing of the TCI state included in the setting information and the first indication and/or the second indication, determines the application of a first TCI state based on the first indication and the application of a second TCI state based on the second indication. According to the one aspect of the present disclosure, the TCI state can be appropriately recognized.

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)) will receive information (QCL assumption/Transmission Configuration Indication ( It has been considered to control transmission and reception processes based on TCI (state/space relationship).

A unified TCI state is being considered that applies the set/activated/indicated TCI state to multiple types of channels/reference signals (RS). However, there are cases where it is not clear how to apply the unified TCI state. If such a relationship is not clear, there is a risk of deterioration in communication quality and throughput.

Therefore, one object of the present disclosure is to provide a terminal, a wireless communication method, and a base station that appropriately determine the TCI state.

A terminal according to an aspect of the present disclosure provides configuration information including settings related to transmission configuration indication (TCI) states applied to multiple types of channels, a first instruction related to the TCI state, and a second instruction related to the TCI state. based on at least one of a receiving unit that receives at least one of an instruction, information about a TCI state application start timing included in the setting information, the first instruction, and the second instruction , a control unit that determines application of a first TCI state based on the first instruction and application of a second TCI state based on the second instruction.

According to one aspect of the present disclosure, the TCI state can be properly recognized.

1A and 1B are diagrams showing an example of a common beam. FIG. 2 is a diagram of Rel. 16 is a diagram showing an example of MAC CE defined in V.16. FIG. 3 is a diagram of Rel. 16 is a diagram showing another example of MAC CE defined in X.16. FIG. 4 shows Rel. 16 is a diagram showing another example of MAC CE defined in X.16. 5A and 5B are diagrams illustrating an example of joint/separate TCI state indications. FIG. 6 is a diagram illustrating an example of timing until application of the indicated TCI state. FIG. 7 is a diagram illustrating an example of criteria for starting BAT according to the first embodiment. 8A and 8B are diagrams showing an example of application of the TCI state according to option 1-1-1. 9A and 9B are diagrams showing an example of application of the TCI state according to option 1-1-3. FIG. 10 is a diagram showing an example of application of the TCI state according to Option 1-1-4. FIG. 11 is a diagram showing an example of application of the TCI state according to Modification 1 of Option 1-1-4. FIG. 12 is a diagram showing an example of application of the TCI state according to Modification 2 of Option 1-1-4. FIG. 13 is a diagram showing an example of the MAC CE configuration according to Option 1-1-5-1. FIG. 14 is a diagram showing an example of the MAC CE configuration according to Option 1-1-5-2. 15A and 15B are diagrams showing an example of application of the TCI state according to option 1-2-1. FIG. 16 is a diagram showing an example of application of the TCI state according to option 1-2-2. FIG. 17A is a diagram showing an example of association of BAT values according to option 1-3-1. FIG. 17B is a diagram showing an example of association of BAT values according to Option 1-3-2. 18A and 18B are diagrams illustrating an example of application of TCI states according to the second embodiment. FIG. 19 is a diagram showing another example of application of the TCI state according to the second embodiment. FIG. 20 is a diagram showing an example of TCI state parameters according to Option 2-1-1. FIG. 21A is a diagram showing an example of application of the TCI state according to variation 2-1-1-1. FIG. 21B is a diagram showing an example of application of the TCI state according to variation 2-1-1-2. FIG. 22A is a diagram showing an example of application of the TCI state according to variation 2-1-1-3. FIG. 22B is a diagram showing an example of application of the TCI state according to variation 2-1-1-4. FIG. 23 is a diagram showing an example of TCI state parameters according to option 2-1-2. FIG. 24 is a diagram showing an example of the MAC CE configuration according to Option 2-1-3-1. FIG. 25 is a diagram showing an example of the MAC CE configuration according to Option 2-1-3-2. 26A and 26B are diagrams showing an example of application of the TCI state according to option 2-2-1. 27A and 27B are diagrams showing an example of application of the TCI state according to option 2-2-2. FIG. 28 is a diagram illustrating an example of application of the TCI state according to example 5-1. FIG. 29 is a diagram showing another example of application of the TCI state according to example 5-1. FIG. 30 is a diagram showing an example of application of the TCI state according to aspect 5-3. FIG. 31 is a diagram showing an example of application of the TCI state according to Option 5-5-1. FIG. 32 is a diagram showing an example of application of the TCI state according to Option 5-5-2. FIG. 33 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment; FIG. 34 is a diagram illustrating an example of the configuration of a base station according to one embodiment. FIG. 35 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment; FIG. 36 is a diagram illustrating an example of hardware configurations of a base station and a user terminal according to an embodiment. FIG. 37 is a diagram illustrating an example of a vehicle according to one embodiment;

(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-co-location (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 referred to as 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 assumes different 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). You may

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) ULs and DLs 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. 1, the 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 is 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.

The DCI format that indicates the TCI status may be a specific DCI format. For example, the particular DCI format may be DCI format 1_1/1_2 (defined in Rel. 15/16/17).

The DCI format (DCI format 1_1/1_2) indicating the TCI state may be a DCI format without DL assignment. In this disclosure, a DCI format without a DL assignment, a DCI format that does not schedule PDSCH (DCI format 1_1/1_2), a DCI format that does not contain one or more specific fields (DCI format 1_1/1_2), one or more A DCI format in which a specific field is set to a fixed value (DCI format 1_1/1_2) may be read interchangeably.

For a DCI format without DL assignment (a DCI format that does not contain one or more specific fields), the specific fields are: TCI field, DCI format identifier field, carrier indicator field, bandwidth part (BWP) indicator field , Time Domain Resource Assignment (TDRA) field, Downlink Assignment Index (DAI) field (if set), Transmission Power Control (for scheduled PUCCH) (TPC)) command field, PUCCH resource indicator field, and PDSCH-to-HARQ feedback timing indicator field (if present), fields other than . The particular field may be set as a reserved field or may be ignored.

For DCI formats without DL assignment (DCI formats in which one or more specific fields are set to fixed values), the specific fields are Redundancy Version (RV) field, Modulation and Coding Scheme (MCS) field, New Data Indicator field, and Frequency Domain Resource Assignment (FDRA) field.

All RV fields may be set to 1. The MCS field may be set to all ones. The NDI field may be set to 0. Type 0 FDRA fields may be set to all zeros. The Type 1 FDRA field may be set to all ones. The FDRA field for dynamic switching (higher layer parameter dynamicSwitch) may be set to all zeros.

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

(MAC CE)
Rel. At 16, MAC CE (TCI States Activation/Deactivation for UE-specific PDSCH MAC CE) is used for UE-specific PDSCH TCI state activation/deactivation (see FIG. 2).

The relevant MAC CE is identified by a MAC subheader with a Logical Channel ID (LCID).

The MAC CE may be used in an environment that uses a single TRP or multi-TRP based on multi-DCI.

The MAC CE includes a Serving Cell ID field, a BWP ID field, a field (Ti) for indicating activation/deactivation of the TCI state, and a CORESET pool ID (CORESET Pool ID) field. may be

The serving cell ID field may be a field for indicating the serving cell to which the MAC CE is applied. The BWP ID field may be a field for indicating the DL BWP to which the MAC CE is applied. In the CORESET pool ID field, the correspondence (mapping) between the activated TCI state and the TCI field code point indicated by the DCI set in the field Ti (DCI TCI code point) is set by the CORESET pool ID. It may be a field indicating that it is unique to the specified ControlResourceSetId.

Also, Rel. In 16, MAC CE (Enhanced TCI States Activation/Deactivation for UE-specific PDSCH MAC CE) is used for UE-specific PDSCH TCI state activation/deactivation (see FIG. 3).

The relevant MAC CE is identified by a MAC PDU subheader with an eLCID.

This MAC CE may be used in an environment that uses multiple TRPs based on a single DCI.

The MAC CE contains a Serving Cell ID field, a BWP ID field, a field for indicating the TCI state identified by the TCI-State ID (TCI state IDi,j (i is an integer from 0 to N, j is 1 or 2)), a field (Ci) indicating whether TCI state IDi,2 is present in the corresponding octet, and a reserved bit field (R, set to 0).

"i" may correspond to the codepoint index of the TCI field indicated by the DCI. "TCI state IDi,j" may indicate the j-th TCI state of the i-th TCI field codepoint.

Also, Rel. In 16, MAC CE (TCI State Indication for UE-specific PDCCH MAC CE) is used for UE-specific PDCCH/CORESET TCI state activation/deactivation (see FIG. 4).

The relevant MAC CE is identified by a MAC subheader with LCID.

The MAC CE contains a Serving Cell ID field, a field indicating the CORESET (CORESET ID) indicating the TCI state, and a field for indicating the TCI state applicable to the CORESET identified by the CORESET ID. (TCI state ID) may be included.

(beam application time (BAT))
Rel. In the DCI-based beam indication in 17,

Considerations

1 and 2 below are considered regarding the application time of the beam/unified TCI state indication.

[Study 1]
It is considered that the first slot to apply the indicated TCI is at least Y symbols after the last symbol of the acknowledgment (ACK) for joint or separate DL/UL beam indication. It is considered that the first slot to apply the indicated TCI is at least Y symbols after the last symbol of the ACK/negative acknowledgment (NACK) for joint or separate DL/UL beam indications. The Y symbol may be set by the base station based on the UE capabilities reported by the UE. The UE capabilities may be reported on a symbol-by-symbol basis.

The ACK may be an ACK for the PDSCH scheduled by the beam pointing DCI. PDSCH may not be scheduled by beam pointing DCI. The ACK in this case may be an ACK for the beam pointing DCI.

　Rel. It is considered that at least one Y symbol per BWP/CC is configured in the UE for 17 DCI-based beam indications.

When the SCS is different between multiple CCs, the Y symbol values are also different, so there is a possibility that the application time will be different between multiple CCs.

[Consideration 2]
For the CA case, the application time of the beam pointing may follow any of options 1 to 3 below.
[Option 1] Both the first slot and the Y symbol are determined on the carrier with the lowest SCS among the one or more carriers to which the beam pointing applies.
[Option 2] Both the first slot and the Y symbol are determined on the carrier with the lowest SCS among the one or more carriers applying the beam pointing and the UL carrier carrying the ACK.
[Option 3] Both the first slot and the Y symbol are determined on the UL carrier carrying the ACK.

　Rel. As a 17 CC simultaneous beam update function, sharing a beam between a plurality of CCs in CA is under consideration. According to Study 2, the application time is common among multiple CCs.

The beam instruction application time (Y symbols) for CA may be determined on the carrier with the minimum SCS among the carriers to which the beam instruction is applied. Rel. 17 MAC CE-based beam indications (if only a single TCI codepoint is activated), the MAC CE activation Rel. 16 application timeline.

Based on these considerations, the following operations are being considered for specification.
[motion]
If the UE transmits the last symbol of PUCCH with HARQ-ACK information corresponding to the DCI carrying the TCI status indication, Rel. The indicated TCI states with 17 TCI states may start to apply from the first slot that is at least Y symbols after the last symbol of that PUCCH. Y may be a higher layer parameter (eg, BeamAppTime_r17[symbol]). Both the first slot and the Y symbols may be determined on the carrier with the lowest SCS among the carriers to which beam pointing applies. The UE may, at a given moment, assume one indicated TCI state with Rel17 TCI states for DL and UL, or one indicated TCI (apart from DL) with Rel17 TCI state for UL. state can be assumed.

X [ms] may be used instead of Y [symbol].

Regarding application time, it is considered that the UE reports at least one of the following

UE capabilities

1 and 2.
[UE Capability 1]
Minimum application time per SCS (minimum value of Y symbols between the last symbol of PUCCH carrying an ACK and the first slot in which the beam is applied).
[UE Capability 2]
Minimum time gap between the last symbol of the beam directed PDCCH (DCI) and the first slot where the beam applies. The gap between the last symbol of the beam pointing PDCCH (DCI) and the first slot where the beam applies may satisfy the UE capability (minimum time gap).

　UE capability 2 may be an existing UE capability (eg, timeDurationForQCL).

The relationship between the beam designation and the channel/RS to which the beam applies may satisfy at least one of

UE capabilities

1 and 2.

(Application of artificial intelligence (AI) technology to wireless communication)
As for future wireless communication technology, utilization of AI technology such as machine learning (ML) for control and management of networks/devices is under consideration.

For example, regarding future wireless communication technology, it is being considered to utilize beam quality predicted using AI/ML for future beam instructions. AI/ML can enable prediction of beam quality.

　BAT from HARQ-ACK related to beam pointing is Rel. It is considered to be at least one value to be set/(pre-)defined for the TCI states defined since 17 onwards.

　Rel. 17, it is considered that beam pattern indication (a sequence of TCI states) is not supported.

(analysis)
As noted above, Rel. 17 and later, for the UE, the TCI state field (TCI field, up to 3 bit) to indicate one or more TCI states (common TCI state).

FIG. 5A is a diagram showing an example of joint TCI state indication. As shown in FIG. 5A, in the joint TCI state indication, one joint TCI state (DL/UL joint TCI state) may correspond to one code point of one TCI field. The UE may determine the TCI state to apply to the DL channel/signal and the UL channel/signal (DL/UL joint TCI state) based on the codepoints of the indicated TCI field.

FIG. 5B is a diagram showing an example of a separate TCI state indication. As shown in FIG. 5B, in the separate TCI state indication, one or two TCI states correspond to codepoints in one TCI field. Each of the two TCI states may be a DL (separate) TCI state and a UL (separate) TCI state. The UE determines the TCI state to apply to DL channels/signals and the TCI state to apply to UL channels/signals based on the codepoints of the indicated TCI field. If the UE is informed of a TCI field codepoint corresponding to only one TCI state (e.g., codepoint "000" in FIG. 10B), the UE may be notified of an unindicated TCI state (e.g., codepoint "000" in FIG. 5B). 000” case, the UL TCI state) may continue/indicate the UL TCI state that applies until the notification.

Also, Rel. 17 et seq., a timeline is considered for indication of TCI conditions (which may be referred to as "beam indication") to application of the indicated TCI conditions. The timing from reception of the beam indication to application of the TCI state (which may be referred to as beam application timing (BAT)) is the transmission of HARQ-ACK for the PDSCH scheduled with the DCI indicating the TCI state. It may be the timing (see FIG. 6) after a certain time (for example, after K symbols). The timing may be at least the first slot after a certain amount of time (eg, K symbols). In the present disclosure, BAT, beam application start timing, K symbols, Y symbols, X [ms], time offset, and timing offset may be read interchangeably.

The K may be determined based on higher layer signaling (RRC parameters) based on capability information reported by the UE (UE Capability Information, for example, "timeDurationForQCL-rel18"). Note that the BAT for a specific subcarrier interval may be set for multiple (for example, all) CCs/BWPs in which a common TCI state ID of a common TCI state in carrier aggregation (CA) is set.

By the way, there are cases where the application of the unified TCI status has not been sufficiently considered. For example, not enough consideration has been given to the dynamic indication of the timeline from beam (TCI state) indication to application (eg, BAT above). Also, for example, the indication of the beam pattern for unified TCI conditions is not well considered. Insufficient consideration like this may lead to deterioration in communication quality, throughput, and the like.

Therefore, the inventors came up with a method for appropriately setting/indicating/applying the TCI state. Note that each embodiment of the present disclosure may be applied when AI/prediction is not utilized.

In one embodiment of the present disclosure, a terminal (user equipment (UE))/base station (base station (BS)) trains an ML model in a training mode, and a test mode , testing mode, etc.). In the test mode, validation of the accuracy of the ML model trained in the training mode may be performed.

In the present disclosure, the UE/BS inputs channel state information, reference signal measurements, etc. to the ML model to obtain highly accurate channel state information/measurements/beam selection/position, future channel state information / Radio link quality etc. may be output.

It should be noted that in the present disclosure, AI may be read as an object (also called object, object, data, function, program, etc.) having (implementing) at least one of the following characteristics:
Estimates based on observed or collected information;
- Choices based on information observed or collected;
• Predictions based on observed or collected information.

In the present disclosure, the object may be, for example, a terminal, a device such as a base station, or a device. Also, the object may correspond to a program included in the device.

Also, in this disclosure, an ML model may be read as an object that has (enforces) at least one of the following characteristics:
Generating an estimate by feeding,
Informed to predict estimates;
・Discover characteristics by giving information,
• Selecting actions by giving information.

Also, in the present disclosure, the ML model may be read as at least one of a model, an AI model, predictive analytics, a predictive analysis model, and the like. Also, the ML model may be derived using at least one of regression analysis (e.g., linear regression analysis, multiple regression analysis, logistic regression analysis), support vector machines, random forests, neural networks, deep learning, and the like. In this disclosure, model may be translated as at least one of encoder, decoder, tool, and the like.

　The ML model outputs at least one information such as estimated value, predicted value, selected action, classification, etc., based on the input information.

The ML model may include supervised learning, unsupervised learning, reinforcement learning, etc. Supervised learning may be used to learn general rules that map inputs to outputs. Unsupervised learning may be used to learn features of data. Reinforcement learning may be used to learn actions to maximize a goal.

Each embodiment described later will be mainly described assuming that supervised learning is used in the ML model, but it is not limited to this.

In the present disclosure, implementation, operation, operation, execution, etc. may be read interchangeably. Also, in this disclosure, testing, after-training, production use, actual use, etc. may be read interchangeably. A signal may be interchanged with signal/channel.

In the present disclosure, the training mode may correspond to the mode in which the UE/BS transmits/receives signals for the ML model (in other words, the mode of operation during training). In the present disclosure, the test mode corresponds to the mode in which the UE/BS implements the ML model (e.g., implements the trained ML model to predict the output) (in other words, the operating mode during the test). good.

In the present disclosure, training mode may refer to a mode in which a specific signal transmitted in test mode has a large overhead (eg, a large amount of resources) is transmitted.

In the present disclosure, training mode may refer to a mode that refers to a first configuration (eg, first DMRS configuration, first CSI-RS configuration). In the present disclosure, test mode may refer to a mode that refers to a second configuration (eg, second DMRS configuration, second CSI-RS configuration) different from the first configuration. At least one of time resources, frequency resources, code resources, and ports (antenna ports) related to measurement may be set more in the first setting than in the second setting.

In the present disclosure, estimation, prediction, and inference may be read interchangeably. Also, in the present disclosure, estimate, predict, and infer may be read interchangeably.

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/C" and "at least one of A, B and C" may be read interchangeably. In the present disclosure, cell, serving cell, CC, carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, band may be read interchangeably. In the present disclosure, indices, IDs, indicators, and resource IDs may be read interchangeably. In the present disclosure, sequences, lists, sets, groups, groups, clusters, subsets, etc. may be read interchangeably. In the present disclosure, supporting, controlling, controllable, operating, and capable of operating may be read interchangeably.

In the present disclosure, configure, activate, update, indicate, enable, specify, and select 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 this disclosure, RRC, RRC signaling, RRC parameters, higher layers, higher layer parameters, RRC information elements (IEs), RRC messages, and configuration may be read interchangeably.

For MAC signaling, for example, MAC Control Element (MAC CE), MAC Protocol Data Unit (PDU), etc. may be used. In the present disclosure, MAC CE, update command, and activation/deactivation command may be read interchangeably.

Broadcast information is, for example, Master Information Block (MIB), System Information Block (SIB), Remaining Minimum System Information (RMSI), SIB1), other system It may be information (Other System Information (OSI)) or the like.

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 the present disclosure, panels, UE panels, panel groups, beams, beam groups, precoders, Uplink (UL) transmitting entities, Transmission/Reception Points (TRPs), base stations, 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)), base station, antenna port of a certain signal (for example, demodulation reference signal (DeModulation Reference Signal (DMRS)) port), DMRS, of a certain signal Antenna port group (e.g. DMRS port group), group for multiplexing (e.g. 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 (e.g., reference signal resource set), CORESET pool, CORESET subset, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink Link TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL), QCL assumption, redundancy version version (RV)) and layers (multi-input multi-output (MIMO) layer, transmission layer, spatial layer) may be read interchangeably. Also, panel identifier (ID) and panel may be read interchangeably. In the present disclosure, TRP ID and TRP may be read interchangeably.

Also, the panel identifier (ID) and the panel may be read interchangeably. In other words, TRP ID and TRP, CORESET group ID and CORESET group, etc. may be read interchangeably.

In the present disclosure, TRP, transmission point, panel, DMRS port group, CORESET pool, one of two TCI states associated with one codepoint of the TCI field may be read interchangeably.

Each embodiment of the present disclosure is used for at least one of transmission/reception using single DCI-based single TRP, transmission/reception using single DCI-based multi-TRP, and transmission/reception using multi-DCI-based multi-TRP. good too.

In the present disclosure, single PDCCH (DCI) may be assumed to be supported when multiple TRPs utilize the ideal backhaul. Multi-PDCCH (DCI) may be assumed to be supported when inter-multi-TRP utilizes non-ideal backhaul.

Note that the ideal backhaul may also be called DMRS port group type 1, reference signal related group type 1, antenna port group type 1, CORESET pool type 1, and so on. Non-ideal backhaul may be referred to as DMRS port group type 2, reference signal associated group type 2, antenna port group type 2, CORESET pool type 2, and so on. Names are not limited to these.

In the present disclosure, single (single) TRP, single TRP system, single TRP transmission, and single PDSCH may be read interchangeably. In this disclosure, multi (multiple) TRPs, multi-TRP systems, multi-TRP transmissions, and multi-PDSCHs may be interchanged. In this disclosure, a single DCI, a single PDCCH, multiple TRPs based on a single DCI, and activating two TCI states on at least one TCI codepoint may be read interchangeably.

In the present disclosure, single TRP, channels with single TRP, channels with one TCI state/spatial relationship, multi-TRP not enabled by RRC/DCI, multiple TCI states/spatial relations enabled by RRC/DCI may be interchanged with that no CORESET is set to a CORESETPoolIndex value of 1 for any CORESET, and that no codepoint in the TCI field maps to two TCI states. .

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, TRP #1 (first TRP) may correspond to CORESET pool index=0, or corresponds to the first TCI state of the two TCI states corresponding to one codepoint of the TCI field. You may TRP#2 (Secondary TRP) TRP#1 (First TRP) may correspond to CORESET pool index=1, or the second TCI of the two TCI states corresponding to one codepoint of the TCI field. It may correspond to the state.

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.

The QCL of the present disclosure may be read interchangeably with QCL Type D.

"TCI state A is the same QCL type D as TCI state B", "TCI state A is the same as TCI state B", "TCI state A is TCI state B and QCL type D" in the present disclosure There is" etc. may be read interchangeably.

In the present disclosure, the code point of the DCI field 'Transmission Configuration Indication', the TCI code point, the DCI code point, and the code point of the TCI field may be read interchangeably.

In the present disclosure, single TRP and single frequency network (SFN) may be read interchangeably. In the present disclosure, high speed train (HST), HST scheme, high-speed travel scheme, scheme 1, scheme 2, NW pre-compensation scheme, HST scheme 1, HST scheme 2, HST NW pre-compensation scheme are read interchangeably. may

In the present disclosure, PDSCH/PDCCH using single TRP may be read as PDSCH/PDCCH based on single TRP and single TRP PDSCH/PDCCH. Also, in the present disclosure, PDSCH/PDCCH using SFN may be read as PDSCH/PDCCH using SFN in multi, PDSCH/PDCCH based on SFN, and SFN PDSCH/PDCCH.

In the present disclosure, receiving DL signals (PDSCH/PDCCH) using SFN may be performed using the same time/frequency resources and/or transmitting the same data (PDSCH)/control information (PDCCH) to multiple It may mean receiving from a send/receive point. Also, receiving a DL signal using an SFN may utilize multiple TCI states/spatial domain filters/beams/QCLs using the same time/frequency resources and/or the same data/control information. may mean to receive

In the present disclosure, the HST-SFN scheme, Rel. 17 and later SFN schemes, new SFN schemes, new HST-SFN schemes, Rel. 17 and later HST-SFN scenarios, HST-SFN schemes for HST-SFN scenarios, SFN schemes for HST-SFN scenarios, scheme 1, HST-SFN schemes A/B, HST-SFN types A/B, Doppler The precompensation schemes, scheme 1 (HST scheme 1) and at least one of the Doppler precompensation schemes, may be read interchangeably.

In the present disclosure, Doppler pre-compensation scheme, base station pre-compensation scheme, TRP pre-compensation scheme, pre-Doppler compensation scheme, Doppler pre-compensation scheme, NW pre-compensation scheme, HST NW pre-compensation scheme, TRP pre-compensation scheme , TRP-based pre-compensation scheme, HST-SFN scheme A/B, and HST-SFN type A/B may be read interchangeably. In this disclosure, precompensation scheme, reduction scheme, improvement scheme, and correction scheme may be read interchangeably.

In the present disclosure, PDCCH/search space (SS)/CORESET with linkage, linked PDCCH/SS/CORESET, and PDCCH/SS/CORESET pair may be read interchangeably. In this disclosure, PDCCH/SS/CORESET without linkage, PDCCH/SS/CORESET not linked, and PDCCH/SS/CORESET alone may be read interchangeably.

In the present disclosure, two linked CORESETs for PDCCH repetition and two CORESETs respectively associated with two linked SS sets may be read interchangeably.

In this disclosure, SFN-PDCCH repetitions, PDCCH repetitions, two linked PDCCHs, and one DCI being received across the two linked search spaces (SS)/CORESET are interchangeable. good.

In the present disclosure, PDCCH repetition, SFN-PDCCH repetition, PDCCH repetition for higher reliability, PDCCH for higher reliability, PDCCH for reliability, two linked PDCCH, are interchanged. good too.

In the present disclosure, the PDCCH reception method, PDCCH repetition, SFN-PDCCH repetition, HST-SFN, and HST-SFN scheme may be read interchangeably.

In the present disclosure, the PDSCH reception method, single DCI-based multi-TRP, and HST-SFN scheme may be read interchangeably.

In the present disclosure, single DCI-based multi-TRP repetition may be NCJT for enhanced mobile broadband (eMBB) service (low priority, priority 0), or URL LLC service for ultra-reliable and low latency communications service (high Priority, priority 1) may be repeated.

In each embodiment of the present disclosure, PDSCH for multiple TRPs based on a single DCI may be interchanged with PDSCH to which TDM/FDM/SDM for multiple TRPs (defined in Rel. 16) is applied.

In each embodiment of the present disclosure, PDSCH for multiple TRPs may be interchanged with PDSCH to which TDM/FDM/SDM for multiple TRPs based on a single DCI (defined in Rel.16) is applied.

In each embodiment of the present disclosure, PUSCH/PUCCH/PDCCH for multiple TRPs based on a single DCI is repeated transmission (repetition) of PUSCH/PUCCH/PDCCH for multiple TRPs (defined after Rel.17). It may be reread.

In each embodiment of the present disclosure, SFN PDSCH/PDCCH is Rel. 17 or later may be read interchangeably as SFN PDSCH/PDCCH.

In each embodiment of the present disclosure, setting the use of multiple TRPs based on multiple DCIs may mean setting CORESET pool index=1. Also, configuring the use of multiple TRPs based on multiple DCIs may mean that two different values (eg, 0 and 1) of the CORESET pool index are configured.

In each embodiment of the present disclosure, UL transmission with multiple panels may refer to a UL transmission scheme with multiple panels of the UE with DCI enhancement.

In each embodiment of the present disclosure, if the joint TCI state/separate TCI state in the unified TCI state framework is not applicable to each channel/signal, determine the TCI state/QCL/spatial relationship for each channel. To do so, the default TCI state/QCL/spatial relationships described above may be used.

Each embodiment of the present disclosure below is described in the above-mentioned Rel. It may be applied to the transmission and reception of any channel/signal covered by the unified TCI state framework defined in 17 et seq.

In the present disclosure, applying TCI conditions to each channel/signal/resource may mean applying TCI conditions to transmission and reception of each channel/signal/resource.

In the present disclosure, "small", "less", "short", and "low" may be read interchangeably. Also, in the present disclosure, ignore, drop, etc. may be read interchangeably.

In the present disclosure, "highest (maximum)" and "lowest (minimum)" may be read interchangeably. In addition, in the present disclosure, "maximum" may be read as "the nth (n is an arbitrary natural number)" larger, higher, higher, or the like. Also, in the present disclosure, "minimum" may be read as "nth (n is any natural number) smaller", smaller, lower, and the like.

In the present disclosure, repetition, repeated transmission, and repeated reception may be read interchangeably.

In the present disclosure, channels, signals, and channels/signals may be read interchangeably. In this disclosure, DL channel, DL signal, DL signal/channel, transmission/reception of DL signal/channel, DL reception, and DL transmission may be read interchangeably. In this disclosure, UL channel, UL signal, UL signal/channel, transmission/reception of UL signal/channel, UL reception, and UL transmission may be read interchangeably.

In the present disclosure, a first TCI state may correspond to a first TRP. In this disclosure, a second TCI state may correspond to a second TRP. In the present disclosure, the nth TCI state may correspond to the nth TRP.

In the present disclosure, a first CORESET pool index value (eg, 0), a first TRP index value (eg, 1), and a first TCI state (first DL/UL (joint/separate) TCI states) may correspond to each other. In the present disclosure, a second CORESET pool index value (eg, 1), a second TRP index value (eg, 2), and a second TCI state (second DL/UL (joint/separate) TCI states) may correspond to each other.

In the present disclosure, timing, time, time, time instance, slot, subslot, symbol, subframe, etc. may be read interchangeably.

(Wireless communication method)
Each embodiment/aspect/option/option/variation of the present disclosure may be used under at least one of the following conditions:
• (explicitly) setting the corresponding higher layer parameters.
• (implicitly) setting of relevant higher layer parameters.
• An indication of (the fields contained in) the MAC CE/DCI.
• (reported) UE Capability.
・Stipulated within the specifications.
• Specific conditions defined in the specification.
• Configuration/indication by higher layer parameters, MAC CE, DCI and/or (reported) UE capabilities.

Each embodiment/aspect/option/option/modification/variation of the present disclosure may be used alone or in combination.

<First embodiment>
The first embodiment relates to BAT indication.

A UE refers to an RS with a TCI state indicated ("if applicable") as an RS configured with a particular QCL type (e.g., QCL type D) for a particular signal. may The UE may apply the TCI state to transmission/reception of one or more channels/signals.

The specific signal may be, for example, at least one of PDSCH DMRS, PDCCH DMRS, and CSI-RS.

The UE determines to apply the TCI state indicated using a beam indication (DCI) from a particular time resource (e.g., a particular symbol/slot) in the first symbol/slot after the BAT has elapsed. may

The specific time resource may be at least one of options 1-0-1 to 1-0-3 below.

The specific time resource is the first/last symbol of PUCCH with HARQ-ACK scheduled by DCI (beam directed DCI) containing an indication of the TCI state, and the slot of the PUCCH (e.g., the first/last slot ) (option 1-0-1).

In the present disclosure, HARQ-ACKs scheduled by a certain DCI may be interchanged with HARQ-ACKs associated with a certain DCI. Also, in the present disclosure, the DCI for beam indication may be a DCI format with DL assignment or a DCI format without DL assignment.

The specific time resource may be at least one of the first/last symbol of the PDCCH of the DCI (beam directed DCI) containing the indication of the TCI state, and the slot of the PDCCH (eg, the first/last slot). Good (option 1-0-2).

The specific time resource may be the indicated symbol/slot/subframe (option 1-0-3). The symbol/slot/subframe may be represented by at least one of a symbol (index) within a slot, a slot index within a subframe, and a subframe index.

The time resources in at least one of the above options 1-0-1 to 1-0-3 may be specified in advance, and higher layer signaling (RRC/MAC CE)/DCI (beam indication DCI/DCI other than beam directing DCI), or may be determined based on UE capability information reported by the UE.

FIG. 7 is a diagram showing an example of criteria for starting BAT according to the first embodiment. In the example shown in FIG. 7, the UE receives beam pointing DCI. According to option 1-0-1 above, the BAT is a certain period of time from the transmission of the HARQ-ACK associated with that DCI. According to option 1-0-2 above, a specific period from the reception of the DCI becomes BAT.

According to options 1-0-1 to 1-0-3 above, it is possible to appropriately determine the time resource that will be the start of the BAT period.

BAT will be explained below.

The UE may determine to apply beam indication (by TCI state) after a specific period of time from the time resources described in at least one of options 1-0-1 to 1-0-3 above.

The specific period may be represented by a specific (eg, X (X is an arbitrary integer)) symbol/slot/subframe, or may be represented by Y [ms] (Y is an arbitrary number). good.

The specific period may be determined according to at least one of options 1-1-1 to 1-1-7 below.

《Option 1-1-1》
The specified time period may be a value predefined in the specification.

This value may be determined, for example, based on the reported UE Capability information and the set higher layer parameters (RRC parameters/MAC CE fields).

For example, the RRC parameter may be an RRC parameter indicating enabled/disabled of beam indications of a plurality of beam application times (BAT).

The value may be determined for each specific number (eg, N (N is an integer greater than 0)) of TCI code points in the TCI field included in the DCI.

The N may be defined in advance in the specification, or may be set/indicated to the UE using higher layer signaling (RRC/MAC CE)/DCI (beam directing DCI/DCI other than beam directing DCI). Alternatively, it may be determined based on UE capability information reported by the UE.

The value may be determined for each TCI state/source RS within a specific QCL (QCL information). The particular QCL may be the QCL corresponding to a particular number (eg, N) of TCI codepoints in the TCI field included in the DCI.

　Figs. 8A and 8B are diagrams showing an example of application of the TCI state according to option 1-1-1. As shown in FIG. 8A, a UE is configured with an association between TCI codepoints and (TCI states (joint DL/UL TCI states in the example of FIG. 8A)) and BAT.

The association between TCI codepoints and TCI states described in each embodiment of the present disclosure is merely an example, and the number of bits of codepoints and the indicated TCI state are not limited to the examples shown. Also, the TCI states described in the association will be mainly described using the joint DL/UL TCI state as an example, but the TCI states included in the association may be separate DL/UL TCI states.

In the example shown in FIG. 8B, when the TCI codepoint "000" is indicated to the UE using the beam directing DCI, the UE determines that the BAT is BAT#1. Also, when the TCI codepoint "100" is indicated to the UE using the beam indication DCI, the UE determines that the BAT is BAT#2.

《Option 1-1-2》
The specific time period may be determined/configured based on specific RRC parameters.

The specific RRC parameter may be a (independent) RRC parameter unrelated to a codepoint in DCI (eg, TCI codepoint).

The specific RRC parameter may be an RRC parameter relating to the application time of the beam (TCI state) (eg, "BeamAppTime").

《Option 1-1-3》
The specific time period may be determined/configured based on specific RRC parameters.

For example, the specific RRC parameter is an RRC parameter that sets the specific period for every specific number (eg, N (N is an integer greater than 0)) of TCI code points in the TCI field included in the DCI, good too.

　Figures 9A and 9B are diagrams showing an example of application of the TCI state according to Option 1-1-3. As shown in FIG. 9A, for a UE, an association between TCI codepoints and (TCI states (joint DL/UL TCI states in the example of FIG. 9A)) and BAT is set.

In the example shown in FIG. 9A, BAT is set for every two (N=2) TCI codepoints. That is, 4 BATs are configured by the RRC parameters for the UE. Such configuration may be done in the configuration of specific RRC parameters. In the example shown in FIG. 9B, the PDSCH configuration (PDSCH-Config) includes a parameter (beamApptimeperTCIlist) regarding the beam application time for each TCI state (TCI list). The beam application time parameter (beamApptimeperTCIlist) includes the beam application time ID (beamApptimeId) of the maximum number of codepoints (maxNrofcodepointsinTCI-StateField) in the corresponding TCI field. The ID of the beam application time (beamApptimeId) may be a parameter for identifying an RRC parameter (eg, “beamApptime”) regarding the application time of the beam (TCI state).

In the present disclosure, the BAT instruction may be indicated by the BAT index (number) or by an index related to the BAT. The association between the BAT-related index and the BAT value may be set by higher layer signaling (RRC/MAC CE), or may be defined in advance in the specifications.

The maximum number of codepoints in the TCI field (maxNrofcodepointsinTCI-StateField) may be a specific number. For example, if N is 1, the maximum number of codepoints in the corresponding TCI field (maxNrofcodepointsinTCI-StateField) may be a first value (eg, 8). For example, if N is 2, the maximum number of codepoints in the corresponding TCI field (maxNrofcodepointsinTCI-StateField) may be a second value (eg, 4).

《Option 1-1-4》
The specific time period may be determined/configured based on specific RRC parameters.

For example, the specific RRC parameter may be a TCI state configuration parameter ("TCI-State"). The setting parameter (“TCI-State”) of the TCI state may include an RRC parameter (eg, “beamApptime”) regarding the application time of the beam (TCI state).

FIG. 10 is a diagram showing an example of applying the TCI state according to Option 1-1-4. In the example shown in FIG. 10, the TCI state setting parameter (“TCI-State”) includes an RRC parameter (eg, “beamApptime”) regarding the beam (TCI state) application time. The RRC parameter (e.g., "beamApptime") relating to beam (TCI state) application time may indicate one of multiple values (n1, n2, n4, n8 or n16 in the example of FIG. 10). good. It should be noted that the multiple values shown in the drawing are merely examples, and the present invention is not limited to this.

[Modification 1 of Option 1-1-4]
For example, the specific RRC parameter may be a QCL information parameter (“QCL-Info”) included in a TCI state configuration parameter (“TCI-State”). The parameter of the QCL information (“QCL-Info”) may include an RRC parameter (eg, “beamApptime”) regarding the beam (TCI state) application time.

The parameter of the QCL information (“QCL-Info”) is indicated in at least one of the parameter indicating the first QCL type (“qcl-Type1”) and the parameter indicating the second QCL type (“qcl-Type2”). may be

FIG. 11 is a diagram showing an example of application of the TCI state according to Modification 1 of Option 1-1-4. In the example shown in FIG. 11 , the TCI state setting parameter (“TCI-State”) includes the QCL information parameter (“QCL-Info”), and the QCL information parameter (“QCL-Info”) includes beam An RRC parameter (eg, "beamApptime") for application time of (TCI state) is included. The RRC parameter (e.g., "beamApptime") for beam (TCI state) application time indicates one of multiple values (n1, n2, n4, n8 or n16 in the example of FIG. 11). good too. It should be noted that the multiple values shown in the drawing are merely examples, and the present invention is not limited to this.

According to this modification, it is possible to set independent (different) BATs depending on different QCL types (e.g., QCL types A/B/C/D), and to flexibly set BATs. can be done.

[Modification 2 of Option 1-1-4]
In at least one of Option 1-1-4 and Modification 1 above, the UE may be configured/notified with information on the correspondence relationship (mapping) between the TCI state ID and the BAT ID.

The BAT ID may be a parameter for specifying the BAT value. The correspondence relationship between the BAT ID and the BAT value may be defined in advance in the specifications, may be set/instructed to the UE using higher layer signaling (RRC/MAC CE)/DCI, or may be reported. It may be determined based on UE capability information.

The information about the correspondence (mapping) between the TCI state ID and the BAT ID may be information that associates the TCI state ID and the BAT ID. The information may be notified to the UE using higher layer signaling (RRC/MAC CE).

FIG. 12 is a diagram showing an example of application of the TCI state according to Modification 2 of Option 1-1-4. In the example shown in FIG. 12, associations for N TCI state IDs and associations for M BATs are described. Information about each association and the correspondence (mapping) between the TCI state ID and the BAT ID is configured for the UE. The UE then determines the BAT for applying the TCI state based on these correspondences and the indicated TCI state (ID).

According to this modification, there is no need to indicate the BAT associated with the TCI state each time, and the candidate values for the BAT value in each TCI state ID can be limited, so overhead can be reduced.

《Option 1-1-5》
The specific time period may be determined/set/indicated based on parameters/fields indicated in the MAC CE.

The MAC CE may be, for example, MAC CE of at least one of options 1-1-5-1 and 1-1-5-2 below.

[Option 1-1-5-1]
The MAC CE may be a new MAC CE (defined after Rel.17).

A new Logical Channel ID (LCID) may be included in the MAC CE subheader.

The MAC CE may include a field indicating activation of the TCI state.

FIG. 13 is a diagram showing an example of a MAC CE configuration according to Option 1-1-5-1. In the MAC CE shown in FIG. 13, a field indicating a CORESET pool ID, a field indicating a serving cell ID, a field indicating a BWP ID, and a field indicating activation/deactivation of TCI state i (denoted as T _i ) are included.

The MAC CE shown in FIG. 13 further includes a field indicating the BAT corresponding to each activated TCI codepoint. The UE determines the BAT corresponding to the indicated TCI state based on the BAT indication field.

[Option 1-1-5-2]
The MAC CE may be an existing MAC CE (for example, defined by Rel.15/16).

For this MAC CE, the reserved bit included in the existing (for example, defined by Rel. 15/16) MAC CE has a field for activating a list of TCI states with BAT (time offset) It may be used as a field indicating whether to interpret as

This MAC CE may be a MAC CE in which new fields/octets are added to the existing (for example, defined by Rel. 15/16) MAC CE.

The existing (for example, defined by Rel. 15/16) MAC CE, for example, MAC CE (Enhanced TCI States Activation /Deactivation for UE-specific PDSCH MAC CE).

FIG. 14 is a diagram showing an example of a MAC CE configuration according to option 1-1-5-2. In the MAC CE shown in FIG. 14, a serving cell ID (Serving Cell ID) field, a BWP ID field, a field for indicating the TCI state identified by TCI-StateID (TCI state IDi,j (i is an integer from 0 to N, j is 1 or 2)), a field (C _i ) indicating whether or not TCI state IDi,2 exists in the corresponding octet, and a reserved bit field (R, set to 0). good too.

The MAC CE shown in FIG. 14 further includes a field (D _i ) and a field indicating the presence of an octet in the BAT corresponding to the second TCI state field corresponding to the i-th TCI state ID (i.e., TCI state IDi,2) (labeled _Ei ). included.

When the D _i field indicates a first value (eg, 0 (or 1)), the UE may determine that a field indicating BAT corresponding to TCI state IDi,1 is included. When the D _i field indicates a second value (eg, 1 (or 0)), the UE may determine that the field indicating BAT corresponding to TCI state IDi,1 is not included.

When the E _i field indicates a first value (eg, 0 (or 1)), the UE may determine that a field indicating BAT corresponding to TCI state IDi,2 is included. When the E _i field indicates a second value (eg, 1 (or 0)), the UE may determine that the field indicating BAT corresponding to TCI state IDi,2 is not included.

In the example shown in FIG. 14, the UE determines the BAT corresponding to the indicated TCI state based on the field indicating the BAT.

《Option 1-1-6》
The specific time period may be determined/indicated based on specific fields included in the DCI.

For the DCI, at least one of options 1-1-6-1 to 1-1-6-4 described below may be followed.

[Option 1-1-6-1]
The DCI may be an existing DCI (format A_B (A and B are arbitrary positive numbers)).

For the DCI, the cyclic redundancy check (CRC) of the DCI may be scrambled with an existing radio network temporary identifier (RNTI).

A new DCI field may be included for this DCI. The new DCI field may be a field that indicates BAT.

Also, with regard to the DCI, under certain conditions, existing fields may be used/interpreted as fields for indicating BAT.

The specific condition is, for example, that a specific field (for example, at least one of the FDRA field, the TDRA field, the MCS field, the RV field, and the NDI field) is (all) a specific value (for example, 0 (or 1) ) may be set.

[Option 1-1-6-2]
The DCI may be an existing DCI (format A_B (A and B are arbitrary positive numbers)).

For the DCI, the CRC of the DCI is Rel. It may be scrambled by the new RNTI defined in V.17 and later.

[Option 1-1-6-3]
The DCI is Rel. 17 or later (format A_B (A and B are arbitrary positive numbers)).

For that DCI, the CRC attached to that DCI may be scrambled with an existing RNTI.

[Option 1-1-6-4]
The DCI is Rel. 17 or later (format A_B (A and B are arbitrary positive numbers)).

For the DCI, the CRC attached to the DCI is Rel. It may be scrambled by the new RNTI defined in V.17 and later.

《Option 1-1-7》
The UE may apply at least two of the above options 1-1-1 to 1-1-6 in combination.

For example, if the codepoints of the TCI field are not mapped with BAT as shown in options 1-1-3/1-1-4 above, options 1-1-1/1-1-2 above may be used. .

According to options 1-1-1 to 1-1-7 above, the length (period) of BAT can be determined appropriately.

Also, for example, for the UE, a BAT common to multiple (eg, all) TCI codepoints and a differential BAT for some codepoints of the multiple TCI codepoints are provided. May be set/indicated. The UE may determine the BAT based on the differential BAT. For this example, at least one of options 1-2-1 and 1-2-2 below may be followed.

《Option 1-2-1》
The UE calculates/derives/determines the BAT based on a specific number (eg, N (N is an integer equal to or greater than 1)) associated difference value (differential BAT) for each TCI codepoint and the common BAT. You may

A common BAT may be set by specific higher layer signaling (RRC parameters), may be predefined in specifications, or may be indicated using MAC CE/DCI. The particular RRC parameter may, for example, be an RRC parameter relating to beam (TCI state) application time (eg, “BeamAppTime”).

《Option 1-2-2》
The UE calculates the BAT based on the difference values associated with every specific number (e.g., N, where N is an integer greater than or equal to 1) of TCI codepoints and the BAT associated with the specific TCI codepoints. / derived / determined.

For example, the UE may calculate/derive/determine the BAT based on the BAT value associated with a specific TCI codepoint and the difference value associated with other TCI codepoints.

For example, the BAT corresponding to each TCI codepoint is calculated/derived/determined from the sum of the BAT value associated with the particular TCI codepoint and the BAT associated with each TCI codepoint (common BAT). good too.

The particular TCI codepoint is, for example, the TCI codepoint corresponding to the highest (or lowest) codepoint index among the lower (or higher) codepoint indices associated with different values, and good too.

Note that the value of the difference BAT may be determined based on at least one method (optional) described in the first embodiment. Also, positive and negative values may be supported for the value of the difference BAT.

According to option 1-2-2, it is sufficient to set a difference value with a smaller bit width compared to option 1-2-1, so the overhead required for setting BAT can be reduced.

　Figs. 15A and 15B are diagrams showing an example of application of the TCI state according to Option 1-2-1. In the example shown in Figures 15A and 15B, the UE receives the beam indication DCI and applies the TCI state indicated in the DCI.

In the example shown in FIG. 15A, for the UE, a TCI codepoint, a TCI state (a joint DL/UL TCI state is shown in the example of FIG. 15A, but may be a separate TCI state), and a BAT (differential BAT ) is set. Also, a common BAT is set/defined for the UE.

In the example shown in FIG. 15B, when 000/001/010 is indicated to the UE as the TCI codepoint, the UE determines that the common BAT is BAT. Also, when 011/100 is indicated as the TCI codepoint to the UE, the UE determines that the value obtained by adding (the value corresponding to) BAT#1 to the common BAT is the BAT. Also, when 101/110/111 is indicated to the UE as the TCI codepoint, the UE determines that the value obtained by adding (the value corresponding to) BAT#2 to the common BAT is the BAT.

FIG. 16 is a diagram showing an example of application of the TCI state according to Option 1-2-2. In the example shown in FIG. 16, the UE receives the beam indication DCI and applies the TCI state indicated in the DCI. Note that the example shown in FIG. 16 shows an example in which option 1-2-1 is also applied in addition to option 1-2-2.

In the example shown in FIG. 16, a common BAT is set/defined for the UE. Also, the correspondence between TCI codepoints, TCI states, and BATs is set for the UE.

In the example shown in FIG. 16, when the maximum BAT (TCI codepoint corresponding to) of the BATs in the corresponding relationship is indicated to the UE, the maximum BAT (in the example of FIG. 16 , BAT#1) and the common BAT is determined to be the BAT. Also, when a BAT other than the maximum BAT (the corresponding TCI codepoint) is indicated to the UE, the UE uses the maximum BAT value (BAT # 1) and the maximum BAT is determined to be the sum of BAT other than BAT (BAT#2 in the example of FIG. 16).

According to Options 1-2-1 and 1-2-2 above, it is possible to set/instruct BAT with reduced overhead.

Below, the quantization of fields related to BAT will be explained.

The UE may determine the value of the time offset (BAT) based on the BAT (bit field) with quantized bits. For this example, at least one of options 1-3-1 and 1-3-2 below may be followed.

《Option 1-3-1》
The association between the BAT bitfield/BAT ID and the BAT value may be configured in the UE using higher layer signaling (RRC signaling).

For example, a UE may be configured with multiple BAT values (associations including) using RRC signaling. The UE may then determine one (or more than one) BAT value from among the multiple BAT values.

If the UE is configured with an association containing only one BAT value using RRC signaling, the UE may not receive the quantized bits indicating the BAT value (bit field indicating BAT). .

FIG. 17A is a diagram showing an example of BAT value association according to option 1-3-1. The UE is associated with the bit field (or ID of BAT) and the BAT value as shown in FIG. good too.

Note that the values and field names in the correspondence shown in FIG. 17A are merely examples, and are not limited to these.

《Option 1-3-2》
Based on certain rules, the association between BAT bitfields/BAT IDs and BAT values may be determined/defined.

Such specific rules/associations may be defined in advance in specifications, for example.

The UE may receive quantized bits (bit field indicating BAT) that indicate the BAT value based on that particular rule.

FIG. 17B is a diagram showing an example of BAT value association according to Option 1-3-2. The association between bit fields (or BAT IDs) and BAT values as shown in FIG. 17B is defined/determined in advance. The UE may determine the BAT based on the association and the indicated quantized bits (bit field indicating BAT).

Note that the values and field names in the correspondence shown in FIG. 17B are merely examples, and are not limited to these.

According to Options 1-3-1 and 1-3-2 above, it is possible to appropriately notify BAT.

<<Modified example of the first embodiment>>
For example, at least one option of this embodiment may be applied in cases where no BAT is associated with the codepoints of at least one TCI field. This modified example is also applicable to the second embodiment described below.

For example, the UE applies at least one option of the present embodiment (eg, option 1-2-1/1-2-2) even when performing operations that utilize multi-panel / multi-TRP / multi-cell, BAT may be determined.

For example, a common BAT may be set for the UE. Common BAT may be set by specific higher layer signaling (RRC parameters), may be predefined in specifications, or may be indicated using MAC CE/DCI. The particular RRC parameter may, for example, be an RRC parameter relating to beam (TCI state) application time (eg, “BeamAppTime”).

Also, a differential BAT according to information related to specific information may be set/instructed to the UE.

The specific information may be, for example, at least one of physical cell ID (PCI), information about the panel to be used, information about whether to use a single panel or multi-panel, and information about TRP. The information on the TRP is, for example, information on the CORESET pool index (RRC parameter "coresetPoolIndex"), information on which TCI state to refer to when multiple (two) TCI states are indicated for the CORESET, and information regarding which spatial relationship to refer to when multiple (two) spatial relationships are configured for each PUCCH resource. By setting / instructing the difference BAT according to the specific information, the UE uses the common BAT and the difference BAT to apply / set the specific information. good too.

According to the first embodiment, BAT can be determined/set/instructed appropriately.

<Second embodiment>
A second embodiment relates to mapping between BAT and TCI states.

The UE may refer to a plurality of RSs indicated by the codepoints of the TCI field of the beam indication DCI in the first symbol/slot after a specific time resource and a specific time period after receiving the beam indication DCI. good.

The UE shall apply one or more TCI states indicated by the codepoints of the TCI field of the beam indication in the first symbol/slot after a particular time resource and a particular time period after receiving the beam indication DCI. You may

This embodiment may be applied in combination with at least one method described in the first embodiment.

The specific time resource may follow at least one of options 1-0-1 to 1-0-3 above.

The specific period may be the BAT/time offset in the first embodiment.

One TCI state (common TCI state/joint (DL/UL) TCI state/separate (DL/UL) TCI state) may be mapped with one BAT. That is, if one TCI codepoint indicates multiple TCI states, a BAT may be mapped to each of the TCI states.

With this configuration, one DCI (TCI codepoint) can be used to indicate the pattern and BAT of beams (TCI states) over multiple time domains.

In addition, in the present disclosure, the TCI state will mainly be described as an application method for two TCI states, a first TCI state and a second TCI state, but the number of TCI states is not limited to two, and may be three or more. may be

Also, in the present disclosure, the beam pattern, the TCI state pattern, the series of TCI states, the correspondence regarding a plurality of TCI states, and the correspondence regarding a plurality of TCI states and BAT may be read interchangeably. Also, in this disclosure, a beam pattern may refer to a correspondence for indicating multiple TCI states over multiple time domains using one TCI codepoint.

　FIGS. 18A and 18B are diagrams showing an example of application of the TCI state according to the second embodiment. In the example shown in FIG. 18A, for the UE, a TCI codepoint, a TCI state (a first joint DL/UL TCI state and a second joint DL/UL TCI state), and a BAT corresponding to the TCI state. Correspondence is set/defined.

In the example shown in FIG. 18B, the UE receives a TCI field with a codepoint of 000 using beam pointing DCI. Based on the TCI field, the UE applies a first TCI state (TCI#0) based on BAT#1 and a second TCI state (TCI#1) based on BAT#2.

FIG. 19 is a diagram showing another example of application of the TCI state according to the second embodiment. As shown in the example of FIG. 19, the correspondence between TCI codepoints, TCI states, and BATs corresponding to the TCI states set in the UE is the joint DL/UL TCI state and the separate DL/UL TCI state. At least one of the states may be included. Of the separate DL/UL TCI states, the DL TCI state and the UL TCI state may indicate the same TCI state or different TCI states. Even in such an example, at least one method of the first embodiment may be applied.

The setting of the correspondence between BAT and TCI status will be described below.

UE, according to at least one of the options 2-1-1 to 2-1-3 described below, the application of multiple TCI states indicated using one TCI codepoint (reference of multiple RSs) you can go

《Option 2-1-1》
For a UE, a TCI state parameter (“TCI-State”) containing multiple QCL information (“QCL-info”) of the same type may be configured using RRC.

FIG. 20 is a diagram showing an example of TCI state parameters according to option 2-1-1. In the example shown in FIG. 20, the RRC parameter (“TCI-State”) includes a TCI state ID, a plurality of type 1 QCL information (first type 1 QCL information “qcl-Type1”, second type 1 QCL information “Secondqcl-Type1” and third type 1 QCL information “Thirdqcl-Type1”) and type 2 QCL information (first type 2 QCL information “qcl-Type2”, second type 2 QCL information "Secondqcl-Type2" and third type 2 QCL information "Thirdqcl-Type2") and parameters for setting the beam application time corresponding to the QCL information ("beamApptime", "SecondbeamApptime" and "ThirdbeamApptime") included. "beamApptime" corresponds to "qcl-Type1" and "qcl-Type2", "SecondbeamApptime" corresponds to "Secondqcl-Type1" and "Secondqcl-Type2", and "ThirdbeamApptime" corresponds to "Thirdqcl-Type1". and "Thirdqcl-Type2".

Although FIG. 20 shows an example in which the number of pieces of QCL information is three, the number is not limited to this example, and may be three or more. Also, the name of each parameter is merely an example, and is not limited to this example.

In the example shown in FIG. 20, the UE supports the first type 1/type 2 QCL information for application of the first TCI state among the plurality of TCI states indicated using one TCI codepoint. The application timing of the indicated TCI state may be determined based on a parameter (“beamApptime”) that sets the beam application time to be applied.

In addition, the UE sets the beam application time corresponding to the second type 1/type 2 QCL information for application of the second TCI state among the plurality of TCI states indicated using one TCI codepoint. The application timing of the instructed TCI state may be determined based on the set parameter (“SecondbeamApptime”).

In addition, the UE sets the beam application time corresponding to the third type 1/type 2 QCL information for application of the third TCI state among the plurality of TCI states indicated using one TCI codepoint. The application timing of the instructed TCI state may be determined based on the set parameter (“ThirdbeamApptime”).

The determination of BAT based on the parameters that set these multiple beam application times may follow at least one of variations 2-1-1-1 to 2-1-1-4 described below.

[Variation 2-1-1-1]
The UE may determine that the BAT set in the parameter (“beamApptime”) setting the beam application time corresponding to the first type 1/type 2 QCL information is the common BAT. The UE may apply the first TCI state corresponding to the first Type 1/Type 2 QCL information at the timing based on the common BAT.

The UE is the n-th (n is an integer of 2 or more) BAT set with parameters for setting the beam application time corresponding to the type 1 / type 2 QCL information, and the common BAT, at the timing based on the n-th A first TCI state application corresponding to type 1/type 2 QCL information may be performed.

FIG. 21A is a diagram showing an example of application of the TCI state according to variation 2-1-1-1. In the example shown in FIG. 21A, the UE determines that the BAT set by the parameter (“beamApptime”) for setting the beam application time corresponding to the first type 1/type 2 QCL information is the common BAT, Apply the first TCI state.

In addition, in the example shown in FIG. 21A, the UE uses a parameter (“SecondbeamApptime”) for setting the beam application time corresponding to the second type 1/type 2 QCL information. 1) and the common BAT at the combined timing of the second TCI state.

[Variation 2-1-1-2]
In the UE, the BAT set with the parameter for setting the beam application time corresponding to the mth (m is a positive integer) type 1/type 2 QCL information is the BAT for applying the mth TCI state. You can judge that there is.

FIG. 21B is a diagram showing an example of application of the TCI state according to variation 2-1-1-2. In the example shown in FIG. 21B, the UE determines that the BAT set by the parameter (“beamApptime”) for setting the beam application time corresponding to the first type 1/type 2 QCL information is BAT#1 (common BAT). may) and apply the first TCI state.

Also, in the example shown in FIG. 21B, the UE determines that the BAT set by the parameter (“SecondbeamApptime”) for setting the beam application time corresponding to the second type 1/type 2 QCL information is BAT#2. decision and apply the second TCI state.

[Variation 2-1-1-3]
The UE may determine that the BAT set in the parameter (“beamApptime”) setting the beam application time corresponding to the first type 1/type 2 QCL information is the common BAT. The UE may apply the first TCI state corresponding to the first Type 1/Type 2 QCL information at the timing based on the common BAT.

UE is set with a parameter for setting the beam application time corresponding to the n-th (n is an integer of 2 or more) type 1 / type 2 QCL information, and the n-1 type 1 / type 2 of The first TCI state corresponding to the n-th type 1/type 2 QCL information may be applied at the timing based on the BAT set by the parameter for setting the beam application time corresponding to the QCL information. .

At this time, the period from the application timing of the (n−1)th TCI state to the application timing of the nth TCI state uses a parameter for setting the beam application time corresponding to the nth type 1/type 2 QCL information. may be set as

Alternatively, parameters for setting the beam application time corresponding to the n-th type 1/type 2 QCL information (for example, the above "SecondbeamApptime" and "ThirdbeamApptime") in the RRC parameter of the TCI state ("TCI-State") is not included, and instead a parameter indicating a switching gap (switching gap) may be included.

The parameter indicating the switching gap may be a parameter indicating the period/gap from the application timing of the n-1th TCI state to the application timing of the nth TCI state.

FIG. 22A is a diagram showing an example of application of the TCI state according to variation 2-1-1-3. In the example shown in FIG. 22A , the UE determines that the common BAT is set by the parameter (“beamApptime”) for setting the beam application time corresponding to the first type 1/type 2 QCL information, and the first apply the TCI conditions of

Also, in the example shown in FIG. 22A, a parameter indicating a switching gap is set for the UE. The UE determines the application timing of the second TCI state and the third TCI state based on the timing (BAT#1 in FIG. 22A) indicated by the parameter of the switching gap.

[Variation 2-1-1-4]
In the UE, the BAT set by the parameter (for example, "beamApptime") for setting the beam application time corresponding to the first type 1/type 2 QCL information is the first from the application timing of the m-1th TCI state. It may be determined to be a parameter indicating the switching gap until the application timing of the TCI state of m.

In variation 2-1-1-4, a parameter for setting the beam application time corresponding to the m-th type 1/type 2 QCL information (for example, the above "beamApptime", "SecondbeamApptime", "ThirdbeamApptime") may not be included and instead a parameter indicating the switching gap may be included.

FIG. 22B is a diagram showing an example of application of the TCI state according to variation 2-1-1-4. In the example shown in FIG. 22B, the UE determines the application timing of the first/second/third TCI state based on the BAT (BAT#1 in FIG. 22B) set by the parameter indicating the switching gap.

According to option 2-1-1-4, it is possible to reduce overhead by narrowing down the BAT for applying multiple TCI states to one.

《Option 2-1-2》
For a UE, QCL information ("QCL-info") containing information about multiple source RSs may be configured using RRC.

In option 2-1-2, information about multiple source RSs may be included in the QCL information in the parameters of one TCI state. Therefore, the UE receives an indication of one TCI codepoint (TCI state ID) and determines the BAT to apply to multiple TCI states based on information about multiple source RSs contained in the indicated TCI state. may

The information about the multiple source RSs may be, for example, an RRC parameter indicating a first reference signal (eg, "referenceSignal"), an RRC parameter indicating a second reference signal (eg, "SecondreferenceSignal"), a third reference signal. An RRC parameter (eg, "ThirdreferenceSignal") to indicate.

The parameter indicating each reference signal may indicate the index of the reference signal (eg, CSI-RS/SSB) of the reference destination.

Note that the number of pieces of information about the source RS is not limited to three, and may be any number. Also, the name of each parameter is merely an example, and is not limited to this example.

FIG. 23 is a diagram showing an example of TCI state parameters according to option 2-1-2. In the example shown in FIG. 23 , type 1 QCL information (“qcl-Type1”), type 2 QCL information (“qcl-Type2”), and beam application time are included in the RRC parameter (“TCI-State”). and a parameter ("beamApptime") that sets the

Further, in the example shown in FIG. 23, the parameter (“QCL-Info”) of the QCL information referred to by the type 1 QCL information (“qcl-Type1”) and the type 2 QCL information (“qcl-Type2”) includes an RRC parameter (“referenceSignal”) indicating the first reference signal and an RRC parameter (“SecondreferenceSignal”) indicating the second reference signal.

Although FIG. 23 shows an example in which the number of parameters related to reference signals in the QCL information is two, the number is not limited to this example, and may be three or more.

In the example shown in FIG. 23 , the UE determines the TCI state based on the information about the first source RS for application of the first TCI state among the multiple TCI states indicated using one TCI codepoint. determine applicability. Also, the UE determines application of a second TCI state among a plurality of TCI states indicated using one TCI codepoint based on information on the second source RS.

At this time, the application timings of the first and second TCI states may be determined based on a parameter ("beamApptime") for setting the beam application time included in the parameters of the TCI state.

In the example shown in FIG. 23, the parameter for setting the beam application time (“beamApptime”) is included in the TCI state parameters, but the parameter for setting the beam application time (“beamApptime”) is May be included in the information parameter ("QCL-Info").

When the parameter for setting the beam application time is included in the QCL information parameter ("QCL-Info"), there may be a plurality of parameters for setting the beam application time. At this time, each of the parameters related to the plurality of source RSs included in the QCL information parameter (“QCL-Info”) may correspond to each of the parameters for setting the beam application time. The UE may apply the BAT corresponding to the parameters for the source RS to apply the TCI state to which the parameters for the source RS correspond.

At least one of the above variations 2-1-1-1 to 2-1-1-4 may be appropriately applied to the determination of BAT based on the parameter for setting the beam application time in option 2-1-2.

《Option 2-1-3》
The UE may receive a MAC CE (activation/deactivation command MAC CE) containing fields for multiple TCI states for multiple (different) BATs.

The plurality of BATs may be BATs corresponding to each application of a plurality of TCI states associated with one TCI codepoint.

The MAC CE may be the MAC CE described in at least one of options 2-1-3-1 and 2-1-3-2 below.

[Option 2-1-3-1]
The MAC CE may be a new MAC CE (defined after Rel.17).

A new Logical Channel ID (LCID) may be included in the MAC CE subheader.

The MAC CE may include a field indicating activation of the TCI state.

The number of fields/octets included in the MAC CE may be set using RRC signaling, or may be determined based on reported UE capability information. The UE capability information may for example be defined by the maximum number of BATs associated with one codepoint.

FIG. 24 is a diagram showing an example of the configuration of MAC CE according to Option 2-1-3-1. The MAC CE shown in FIG. 24 includes a field indicating the CORESET pool ID, a field indicating the ID of the serving cell, a field indicating the BWP ID, and a field indicating activation of the TCI state (described as _TN ).

In the MAC CE shown in FIG. 24, the field indicating activation of the TCI state may correspond to BAT. For example, in the MAC CE, the field that activates the first TCI state among multiple TCI states corresponding to one TCI state corresponds to the first BAT (eg, BAT#1). Also, in the MAC CE, the field for activating the second TCI state among the multiple TCI states corresponding to one TCI state corresponds to the second BAT (eg, BAT#2). In other words, the UE may refer to the first TCI state related field in the first BAT application and the second TCI state related field in the second BAT application.

The MAC CE shown in FIG. 24 further includes a field indicating BAT#1 and a field indicating BAT#2 corresponding to each TCI state. The UE determines the BAT corresponding to the indicated TCI state based on the BAT indication field.

In the example shown in FIG. 24, the field indicating BAT may be added/deleted according to the LCID, for example.

[Option 2-1-3-2]
The MAC CE may be an existing MAC CE (for example, defined by Rel.15/16).

FIG. 25 is a diagram showing an example of a MAC CE configuration according to Option 2-1-3-2. In the MAC CE shown in FIG. 25, a serving cell ID (Serving Cell ID) field, a BWP ID field, a field (TCI state IDi,j (i is an integer from 0 to N, j is 1 or 2), a field indicating whether or not TCI state IDi,2 exists in the corresponding octet (C _i ), and a reserved bit field (R, set to 0) may be included. Note that the field for indicating the TCI state corresponding to each BAT may mean a field for indicating the TCI state to be referenced after each BAT has passed.

The MAC CE shown in FIG. 25 further includes an octet corresponding to the first TCI state field (that is, TCI state IDi,1) of the i-th TCI state ID corresponding to BAT#Y (Y is an arbitrary integer). and a field indicating the presence of an octet corresponding to the second TCI state field (i.e., TCI state IDi,2) of the i-th TCI state ID corresponding to BAT# _Y . (denoted as _EiY ) and are included.

When the _DiY field indicates a first value (eg, 0 (or 1)), the UE includes a field for indicating the TCI state corresponding to TCI state IDi,1 corresponding to BAT#Y. You may judge that When the _DiY field indicates a second value (eg, 1 (or 0)), the UE includes a field for indicating the TCI state corresponding to TCI state IDi,1 corresponding to BAT#Y. You may decide not to.

When the E _iY field indicates a first value (eg, 0 (or 1)), the UE determines that a field indicating BAT corresponding to TCI state IDi,2 corresponding to BAT#Y is included. You may When the E _iY field indicates a second value (eg, 1 (or 0)), the UE indicates that the field indicating the BAT corresponding to the TCI state IDi,2 corresponding to BAT#Y is not included. You can judge.

In the example shown in FIG. 25, the UE determines the BAT corresponding to the indicated TCI state based on the field indicating the BAT.

Although the example shown in FIG. 25 shows a case where the number of BATs is two, the number may be three or more. Also, in the MAC CE in option 2-1-3-2, each BAT corresponding to the TCI state ID as described in option 1-1-5-2 of the first embodiment (for example, FIG. 25 example, a field indicating BAT#1/#2) may be included.

According to options 2-1-1 to 2-1-3 above, even if multiple TCI states are associated with one TCI codepoint, the TCI state/BAT can be set appropriately.

The following describes the start timing (symbol/slot) of TCI state application/RS reference by the UE when one TCI codepoint is mapped to multiple TCI states/source RSs with multiple BATs. .

If one TCI codepoint is mapped to multiple TCI states/source RSs with multiple BATs, the UE may set the start timing (symbol/slot) referring to the RS for the indicated TCI state in a specific manner. may be determined based on

The specific method may follow at least one of options 2-2-1 and 2-2-2 below.

《Option 2-2-1》
The UE starts referencing the RS for the indicated TCI state based on the configured/indicated BAT after a specific time resource determined based on at least one method described in the first embodiment above. good too.

In other words, the UE starts applying the indicated TCI state based on the configured/indicated BAT after a certain time resource determined based on at least one method described in the first embodiment above. may

The set/indicated BAT may indicate a duration from the specific time resource.

FIGS. 26A and 26B are diagrams showing an example of application of the TCI state according to option 2-2-1. As in the example shown in FIG. 26A , the UE is configured with associations between TCI codepoints, multiple TCI states (first TCI state/second TCI state), and BAT corresponding to each TCI state. be.

In the example shown in FIG. 26B, the UE receives a beam pointing DCI that indicates the TCI codepoint "000". The UE then determines the start of application of the first TCI state (TCI#0) to be timing BAT#1 after the transmission of the HARQ-ACK associated with the beam directing DCI. The UE also determines the start of application of the second TCI state (TCI#1) to be timing BAT#2 after the transmission of the HARQ-ACK associated with the beam directed DCI.

《Option 2-2-2》
The UE starts referencing the RS for the indicated TCI state based on the configured/indicated BAT after a specific time resource determined based on at least one method described in the first embodiment above. good too.

The set/instructed BAT may indicate at least one of the period from the specific time resource and the period to be added (that is, differential BAT).

For example, for the first TCI state among a plurality of TCI states and a plurality of BATs corresponding to one TCI codepoint, the UE performs BAT corresponding to the first TCI state after the specific time resource. It may be determined to start the application after (first BAT) has elapsed. At this time, the UE applies the second TCI state after the specific time resource, after the first BAT, and after the BAT corresponding to the second TCI state (second BAT). You may decide to start Thus, the initiation of application of the nth TCI state may be determined/determined based on the initiation timing of application of the n-1th TCI state and the indicated BAT.

FIGS. 27A and 27B are diagrams showing an example of application of the TCI state according to option 2-2-2. As in the example shown in FIG. 27A , the UE is configured with associations between TCI codepoints, multiple TCI states (first TCI state/second TCI state), and BAT corresponding to each TCI state. be.

In the example shown in FIG. 27B, the UE receives a beam pointing DCI that indicates the TCI codepoint "000". The UE then determines the start of application of the first TCI state (TCI#0) to be timing BAT#1 after the transmission of the HARQ-ACK associated with the beam directing DCI. In addition, the UE starts applying the second TCI state (TCI # 1) at the application start timing of the first TCI state (after BAT # 1 has elapsed from the transmission of HARQ-ACK related to the beam instruction DCI timing), it is determined that the timing is after BAT#2 has elapsed.

Note that in this embodiment, the UE may assume that application of the first TCI state starts before application of the second TCI state. In this embodiment, the UE may assume that the application of the nth TCI state starts before the application of the n+1th TCI state.

Also, in this embodiment, the UE may assume that the first BAT and the second BAT are the same value. In this case, information indicating one BAT value may be notified to the UE. According to this method, the overhead of BAT notification to the UE can be reduced.

According to the second embodiment described above, even if a plurality of TCI states correspond to one TCI codepoint, it is possible to appropriately apply the TCI states and determine the application timing.

<Third Embodiment>
A third embodiment relates to the number of TCI states to activate for the UE.

<<Mode 3-1>>
The UE may receive activation commands (MAC CE) corresponding to a certain number (eg, up to X) of TCI state combinations/pairs.

For example, the MAC CE may activate up to eight TCI state combinations/pairs.

In the present disclosure, one TCI state combination may correspond to a TCI state (pair of TCI states) indicated by one TCI codepoint.

<<Mode 3-2>>
The UE may receive an activation command (MAC CE) corresponding to a combination of TCI states, consisting of a certain number (eg, up to X) of total TCI states (TCI state pairs).

For example, the MAC CE may activate up to eight TCI states (TCI state pairs) in total. By limiting the maximum TCI state in this manner, the number of active TCI states can be limited.

<<Mode 3-3>>
The UE may receive an activation command (MAC CE) corresponding to a combination/pair of TCI states, consisting of a certain number (eg, up to X) of source RSs of QCL information in total.

For example, the MAC CE may activate TCI states (pairs of TCI states) including up to eight source RSs in total.

The X may be determined/set for each QCL type.

The X may be determined/set for each specific QCL type (eg, QCL type D).

The X may represent the maximum number relative to the total number of source RSs of a particular QCL type (eg, QCL type A/B/C).

In at least one of aspects 3-1 to 3-3 above, X may be a value defined in the specifications in advance, or determined based on higher layer signaling (RRC/MAC CE)/DCI. may be determined based on reported UE capability information.

Although the above example shows an example where X is 8, a number greater than 8 may be supported.

According to the third embodiment, the number of TCI states to activate for the UE can be determined appropriately.

<Fourth Embodiment>
A fourth embodiment relates to the maximum/minimum value of BAT.

The maximum/minimum value of BAT that is set/instructed for the UE may be a value defined in the specifications in advance, or may be determined based on higher layer signaling (RRC/MAC CE)/DCI. Alternatively, it may be determined based on reported UE capability information.

<<Aspect 4-1>>
The UE may not expect/expect to receive an indication/activation/configuration that includes a BAT with a value greater than the specified/determined maximum BAT.

The UE may assume/expect not to receive an indication/activation/configuration containing a BAT with a value greater than the specified/determined maximum BAT.

If the UE is notified of an indication/activation/configuration that includes a BAT value greater than the specified/determined maximum BAT value, the UE determines to use the specified/determined maximum BAT value. may

<<Aspect 4-2>>
The UE may not expect/expect to receive an indication/activation/configuration that includes a BAT with a value less than the specified/determined minimum BAT.

The UE may assume/expect not to receive an indication/activation/configuration containing a BAT with a value less than the specified/determined minimum BAT.

If the UE is notified of an indication/activation/configuration that includes a BAT with a value smaller than the specified/determined minimum BAT, the UE determines to use the specified/determined minimum BAT. may

According to the fourth embodiment, it is possible to appropriately determine the maximum/minimum value of BAT and perform the UE operation related to the maximum/minimum value.

<Fifth Embodiment>
The fifth embodiment relates to the operation when the UE receives multiple beam indication DCI.

<<Mode 5-1>>
The UE may not expect/expect to receive a specific DCI/MAC CE after receiving a DCI/MAC CE indicating the TCI status.

The specific DCI/MAC CE may be a DCI/MAC CE that instructs BAT at a timing before the last BAT (beam application timing) instructed using the received DCI/MAC CE.

FIG. 28 is a diagram showing an example of application of the TCI state according to aspect 5-1. In the example shown in FIG. 28 , the UE receives beam indication DCI#1 instructing to refer to RS#0 after BAT#0 and to refer to RS#1 after BAT#1. do.

It should be noted that, in the present disclosure, the referred RS (referred RS) may be read interchangeably with the source RS (reference RS) of the TCI state used at a certain time.

FIG. 28 describes beam instruction DCI#2 that instructs to refer to RS#2 after BAT#2 has passed. Beam directing DCI#2 exists after receiving beam directing DCI#1, and BAT#2 indicates the timing prior to BAT#1 (ie, the last BAT pointed to by beam directing DCI#1).

In such cases, the UE does not expect/expect to receive beam indication DCI#2.

FIG. 29 is a diagram showing another example of application of the TCI state according to aspect 5-1. In the example shown in FIG. 29, the UE receives beam indication DCI#1 instructing to refer to RS#0 after BAT#0 and to refer to RS#1 after BAT#1. do.

FIG. 29 describes beam instruction DCI#2 that instructs to refer to RS#2 after BAT#2 has elapsed. Beam directing DCI#2 exists after receiving beam directing DCI#1, and BAT#2 indicates the timing after BAT#1 (ie, the last BAT pointed to by beam directing DCI#1).

In such a case, the UE determines to refer to RS#2 according to the beam instruction DCI#2.

<<Aspect 5-2>>
After receiving a DCI/MAC CE indicating the TCI state, the UE may ignore some/all of the indications from a particular DCI/MAC CE.

The UE ignores part/all of the instruction by the beam instruction DCI#2 as shown in FIG.

<<Mode 5-3>>
The UE may not expect/expect to receive a specific DCI/MAC CE after receiving a DCI/MAC CE indicating the TCI status.

The specific DCI/MAC CE indicates a TCI state/RS that is different from the TCI state/RS indicated at the timing before the last BAT (beam application timing) indicated using the received DCI/MAC CE It may be a DCI/MAC CE that

FIG. 30 is a diagram showing an example of application of the TCI state according to aspect 5-3. In the example shown in FIG. 30, the UE receives beam indication DCI#1 instructing to refer to RS#0 after BAT#0 and to refer to RS#1 after BAT#1. do.

FIG. 30 shows reference to RS#0 in a specific period from after BAT#0 to before BAT#1, and specific period from after BAT#1 to after BAT#2. Beam indication DCI#2 is described to instruct that reference to RS#1 is made in BAT#2 and that reference to RS#2 is made after BAT#2 has passed. The instructions for RS#0 and RS#1 by beam instruction DCI#2 include the same instructions as those of beam instruction DCI#1.

In such a case, the UE determines to refer to RS#2 (and RS#0/#1) according to the beam instruction DCI#2.

On the other hand, regarding beam directing DCI #2 as shown in FIG. 28 above, the UE does not assume/expect to receive the beam directing DCI.

<<Aspect 5-4>>
After receiving a DCI/MAC CE indicating the TCI state, the UE may ignore some/all of the indications from a particular DCI/MAC CE.

Some information that the UE ignores may be specified in advance, may be determined based on higher layer signaling (RRC/MAC CE)/DCI, or may be based on reported UE capability information. may be determined by

<<Mode 5-5>>
Aspect 5-5 describes the operation when the UE receives a specific DCI/MAC CE after receiving the DCI/MAC CE indicating the TCI state.

The specific DCI/MAC CE is a TCI state/different from the instruction for the TCI state/RS at the timing before the last BAT (beam application (start) timing) indicated using the received DCI/MAC CE It may be a DCI/MAC CE that indicates an RS.

If the UE receives the particular DCI/MAC CE after receiving the DCI/MAC CE indicating the TCI state, the UE shall apply (or change) may be made. At this time, the UE may not refer to the TCI state/source RS applied after a certain timing for previously received DCI/MAC CE indications.

The specific timing may be at least one of options 5-5-1 and 5-5-2 below.

[Option 5-5-1]
The specific timing may be timing after a specific period (eg, X symbols/slots/subframes/Y [ms]) after reception of the DCI/MAC CE (received later).

Also, the specific timing may be the transmission timing of the HARQ-ACK associated with the (later received) DCI/MAC CE.

FIG. 31 is a diagram showing an example of application of the TCI state according to option 5-5-1. In the example shown in FIG. 31, the UE refers to RS#0 after BAT#0, refers to RS#1 after BAT#1, and refers to RS#2 after BAT#2. receive the beam directing DCI#1 instructing that.

Also, in the example shown in FIG. 31, the UE receives beam instruction DCI#2 instructing to refer to RS#3 after BAT#3 has elapsed. The BAT#3 exists between BAT#1 and BAT#2.

In the example shown in FIG. 31, the UE refers to the RS by beam directing DCI#1 (applying the TCI state) after a specific timing (eg, after transmission of HARQ-ACK related to beam directing DCI#2). disobey. That is, the UE determines to refer to RS#0 (does not determine to refer to RS#1) from after transmission of HARQ-ACK related to beam instruction DCI#2 to BAT#3. The UE determines to refer to RS#3 after BAT#3 has elapsed.

[Option 5-5-2]
The specific timing may be the time resource (symbol) for the first TCI state/RS application/reference as indicated by the (later received) DCI/MAC CE.

FIG. 32 is a diagram showing an example of application of the TCI state according to Option 5-5-2. In the example shown in FIG. 32, the UE refers to RS#0 after BAT#0, refers to RS#1 after BAT#1, and refers to RS#2 after BAT#2. receive the beam directing DCI#1 instructing that.

Also, in the example shown in FIG. 32, the UE receives beam instruction DCI#2 instructing to refer to RS#3 after BAT#3 has elapsed. The BAT#3 exists between BAT#1 and BAT#2.

In the example shown in FIG. 32, the UE, after a specific timing (e.g., the first TCI state/RS application/reference symbol (ie, BAT #3) indicated by the beam indication DCI) Do not follow RS referencing (TCI state application) by DCI#1. That is, before BAT#3, the UE determines to refer to RS#0/#1 based on the beam instruction DCI#1, and determines to refer to RS#3 after BAT#3.

The "timing before the last BAT" in aspects 5-1 to 5-5 above may be read as "timing before the elapse of a specific period after the last BAT".

The specific period may be specified in advance, may be determined based on a specific rule, may be determined based on higher layer signaling (RRC/MAC CE)/DCI, It may be determined based on reported UE capability information (eg, capability information for application time of QCL (“timedurationForQCL”)). The specific time period may be expressed in X symbols/slot/subframe/Y[ms].

According to the fifth embodiment described above, even when a plurality of beam instructions are received, it is possible to appropriately control the application of the TCI state and the operation of referencing the source RS.

<Other embodiments>
At least one of the embodiments described above may only be applied to UEs that have reported or support a particular UE capability.

The specific UE capabilities may indicate at least one of the following (may be defined in at least one of the following):
• Ability to operate/information on each embodiment/aspect.
• Ability to act/information on each option/combination of options.
• Ability to act/information about each option/option combination.
• The maximum number of TCI states associated with one TCI codepoint (supported).
• The maximum number of source RSs with the same QCL type associated with one TCI codepoint (supported).
• Maximum number of activated TCI states (supported).
• Maximum/minimum value of BAT (supported).

The UE capabilities are, for example, determining BAT (for AI-assisted beam prediction), setting/indicating BAT, setting/activating/indicating beam pattern (multiple TCI states), TCI state included in MAC CE (of combination/pair), maximum/minimum value of BAT, operation on receipt of multiple beam indications.

Also, the UE capability may be defined by the maximum supported N/M/n/m/X/Y values (described in each embodiment).

The UE capabilities may be reported per frequency, or may be reported per frequency range (eg, Frequency Range 1 (FR1), Frequency Range 2 (FR2), FR2-1, FR2-2) , may be reported for each cell, or may be reported for each subcarrier spacing (SCS).

The above UE capabilities may be reported commonly for Time Division Duplex (TDD) and Frequency Division Duplex (FDD), or may be reported independently.

Also, at least one of the above embodiments may be applied if the UE is configured with specific information related to the above embodiments by higher layer signaling.

According to the above and other embodiments, the UE can implement the above functions while maintaining compatibility with existing specifications.

(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. 33 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. 34 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 path interface 140 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 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 (for example, 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.

The transmitting unit and receiving unit of the base station 10 in the present disclosure may be configured by at least one of the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission line interface 140.

The transmitting/receiving unit 120 may transmit configuration information including settings related to transmission configuration indication (TCI) states applied to multiple types of channels, and an indication of the TCI states applied to the multiple types of channels. The control unit 110 may instruct the application start timing of the TCI state using the information about the application start timing of the TCI state included in the setting information and the instruction (first embodiment).

The transmitting/receiving unit 120 may transmit setting information including settings related to transmission configuration indication (TCI) states applied to multiple types of channels, and an indication of the TCI states. A codepoint of a TCI field included in said indication may be associated with multiple said TCI states. The control unit 110 may instruct the application start timing of the TCI state using the information about the application start timing of the TCI state included in the setting information and the instruction (second embodiment).

Transmitting/receiving section 120 receives at least configuration information including settings regarding transmission configuration indication (TCI) states applied to multiple types of channels, a first instruction regarding the TCI states, and a second instruction regarding the TCI states. You can send one. Control unit 110 uses at least one of the information about the application start timing of the TCI state included in the setting information, the first instruction, and the second instruction to perform the first step based on the first instruction. application of one TCI state and application of a second TCI state based on the second instruction may be instructed (fifth embodiment).

(user terminal)
FIG. 35 is a diagram illustrating an example of the configuration of a user terminal according to an 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 measuring 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 transmitting/receiving unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (eg, RLC retransmission control), MAC layer processing (eg, , HARQ retransmission control) and the like may be performed to generate a bit string to be transmitted.

The transmission/reception 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 .

The transmitting/receiving unit 220 may receive configuration information including settings regarding transmission configuration indication (TCI) states applied to multiple types of channels, and indications of the TCI states applied to the multiple types of channels. The control unit 210 may determine the application start timing of the TCI state based on the information about the application start timing of the TCI state included in the setting information and the instruction (first embodiment).

The setting information may be Radio Resource Control (RRC) parameters. The information about the application start timing of the TCI state may be included in at least one of physical downlink shared channel configuration parameters, TCI state configuration parameters, and pseudo collocation configuration parameters (first embodiment ).

The setting information may be a Medium Access Control control element (MAC Control Element (CE)). The information on the TCI state application start timing may be a specific field included in the MAC CE (first embodiment).

The setting information includes information about a first application start timing corresponding to a first TCI state among the TCI states and information about a second application start timing corresponding to a second TCI state among the TCI states. may include information; When applying the first TCI state, the control unit 210 may determine the application start timing of the first TCI state based on the information on the first application start timing. When applying the second TCI state, the control unit 210 determines the application start timing of the second TCI state based on the information on the first application start timing and the information on the second application start timing. You can judge.

The transmitting/receiving unit 220 may receive configuration information including settings related to transmission configuration indication (TCI) states applied to multiple types of channels, and the indication of the TCI states. A codepoint of a TCI field included in said indication may be associated with multiple said TCI states. The control unit 210 may determine the application start timing of the TCI state based on the information about the application start timing of the TCI state included in the setting information and the instruction (second embodiment).

The setting information includes information about a first application start timing corresponding to a first TCI state among the plurality of TCI states, and a second TCI state corresponding to a second TCI state among the plurality of TCI states. 2, and information on the application start timing. When applying the first TCI state, the control unit 210 may determine the application start timing of the first TCI state based on the information on the first application start timing. When applying the second TCI state, the control unit 210 determines the application start timing of the second TCI state based on the information on the first application start timing and the information on the second application start timing. You may judge (2nd Embodiment).

The setting information may be a Medium Access Control control element (MAC Control Element (CE)). The MAC CE may activate TCI states included in at most a specified number of TCI state pairs or combinations (third embodiment).

The control unit 210 may not assume reception of at least one of an instruction regarding an application start timing that is greater than the maximum value regarding the application start timing and an instruction regarding an application start timing that is less than the minimum value regarding the application start timing. (Fourth embodiment).

The transmitting/receiving unit 220 receives at least configuration information including settings regarding transmission configuration indication (TCI) states applied to a plurality of types of channels, a first instruction regarding the TCI states, and a second instruction regarding the TCI states. You may receive one. Based on at least one of the information about the application start timing of the TCI state included in the setting information, the first instruction, and the second instruction, control unit 210 performs the first instruction based on the first instruction. A decision may be made between applying one TCI state and applying a second TCI state based on the second indication (fifth embodiment).

The control unit 210 may not assume that the second instruction instructing the application start timing of the second TCI state earlier than the specific timing regarding the application start timing of the first TCI state is received. Further, at least part of the second instruction instructing the application start timing of the second TCI state earlier than the specific timing may be ignored (fifth embodiment).

Control unit 210 receives the second instruction instructing to apply a TCI state other than the first TCI state during the period of applying the first TCI state based on the first instruction. It may not be assumed, and at least a part of the second instruction instructing application of a TCI state other than the first TCI state during the period may be ignored (fifth implementation form).

Control unit 210 changes the application of the first TCI state based on the first instruction after a specific period of time has passed since the reception of the second instruction, and changes the application of the first TCI state based on the second instruction. may be determined to apply the TCI state of (fifth embodiment).

(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 implemented by any combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be implemented using one device physically or logically coupled, or directly or indirectly using two or more physically or logically separated devices (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. 36 is a diagram illustrating an example of hardware configurations of a base station and a user terminal according to an 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 the present 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. according to an applied 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 a fixed time length (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)), upper layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or 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. 37 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 a millimeter wave radar, Light Detection and Ranging (LiDAR), a camera, a positioning locator (e.g., Global Navigation Satellite System (GNSS), etc.), map information (e.g., 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".

"Maximum transmit power" described in this disclosure may mean the maximum value of transmit power, may mean the nominal maximum transmit power (the nominal UE maximum transmit power), or may mean the rated maximum transmit power (the rated UE maximum transmit power).

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, when articles are added by translation, such as a, an, and the in English, the disclosure may include that 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

receive at least one of: configuration information including settings for transmission configuration indication (TCI) states to apply to multiple types of channels; a first indication for the TCI states; and a second indication for the TCI states. a receiver;
Based on at least one of the information about the application start timing of the TCI state included in the configuration information, the first instruction, and the second instruction, the first TCI state based on the first instruction and a control unit that determines to apply a second TCI state based on the second indication.
The control unit is not assumed to receive the second instruction instructing the application start timing of the second TCI state earlier than a specific timing regarding the application start timing of the first TCI state, or The terminal according to claim 1, disregarding at least a part of the second instruction instructing start timing of application of the second TCI state earlier than a specific timing.
The control unit receives the second instruction instructing application of a TCI state other than the first TCI state during a period of applying the first TCI state based on the first instruction. 2. The terminal of claim 1, disregarding at least a portion of the second indication indicating not to assume or apply a TCI state other than the first TCI state during the period.
The control unit changes application of the first TCI state based on the first instruction after a specific period of time has elapsed since receiving the second instruction, and changes the application of the first TCI state based on the second instruction. 2. The terminal of claim 1, wherein the terminal determines to apply the TCI conditions of .
receive at least one of: configuration information including settings for transmission configuration indication (TCI) states to apply to multiple types of channels; a first indication for the TCI states; and a second indication for the TCI states. a step;
Based on at least one of the information about the application start timing of the TCI state included in the configuration information, the first instruction, and the second instruction, the first TCI state based on the first instruction and determining to apply a second TCI state based on said second indication.
transmitting at least one of: configuration information including settings for a transmission configuration indication (TCI) state that applies to multiple types of channels; a first indication for the TCI state; and a second indication for the TCI state. a transmitter;
Using at least one of the information about the application start timing of the TCI state included in the configuration information, the first instruction, and the second instruction, determining the first TCI state based on the first instruction and a controller that instructs to apply a second TCI state based on the second instruction.