WO2024017193A1

WO2024017193A1 - Tci state determining method and apparatus, terminal and network side device

Info

Publication number: WO2024017193A1
Application number: PCT/CN2023/107708
Authority: WO
Inventors: 杨宇; 宋扬
Original assignee: 维沃移动通信有限公司
Priority date: 2022-07-18
Filing date: 2023-07-17
Publication date: 2024-01-25
Also published as: CN117479321A

Abstract

The present application relates to the technical field of communications, and provides a TCI state determining method and apparatus, a terminal and a network side device. The TCI state determining method in embodiments of the present application comprises: a terminal acquires common beam information indicated by a network side device, wherein the common beam information comprises M first TCI states, M being a positive integer; and the terminal determines, from the M first TCI states, a target TCI state of a target channel and/or a target signal, wherein the target channel comprises at least one of a physical uplink control channel (PUCCH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH); or the target signal comprises at least one of a sounding reference signal (SRS) and a channel state information reference signal (CSI-RS).

Description

TCI status determination method, device, terminal and network side equipment

Cross-references to related applications

This application claims priority to Chinese Patent Application No. 202210845953.2 filed in China on July 18, 2022, the entire content of which is incorporated herein by reference.

Technical field

This application belongs to the field of communication technology, and specifically relates to a TCI status determination method, device, terminal and network side equipment.

Background technique

In a Multi Transmission Reception Point (mTRP) scenario, the network side device needs to use the beam indication scheme corresponding to the channel for each channel to indicate its Transmission Configuration Indicator (TCI) state. The terminal uses the TCI status indicated by the network side device to determine which beam to use for transmission, so the beam indication process for each channel is relatively complicated.

Contents of the invention

Embodiments of the present application provide a TCI status determination method, device, terminal and network side equipment, which can simplify the channel and/or signal beam indication process.

In the first aspect, a method for determining TCI status is provided, which method includes:

The terminal obtains the common beam information indicated by the network side device, where the common beam information includes M first TCI states, and M is a positive integer;

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states;

Wherein, the target channel includes: at least one of the physical uplink control channel PUCCH, physical downlink control channel PDCCH, physical downlink shared channel PDSCH and physical uplink shared channel PUSCH; or the target signal includes: sounding reference signal SRS and at least one of channel state information reference signals CSI-RS.

In the second aspect, a TCI status determination device is provided, applied to a terminal, and the device includes:

The acquisition module is used to acquire the common beam information indicated by the network side device, wherein the common beam information includes M first TCI states, and M is a positive integer;

A first determination module, configured to determine the target TCI state of the target channel and/or the target signal from the M first TCI states;

In the third aspect, a method for determining TCI status is provided, which method includes:

The network side device indicates common beam information to the terminal, where the common beam information includes M first TCI states, M is a positive integer;

The network side device determines the target TCI state of the target channel and/or the target signal from the M first TCI states;

In the fourth aspect, a TCI status determination device is provided, which is applied to network side equipment. The device includes:

A first sending module, configured to indicate common beam information to the terminal, where the common beam information includes M first TCI states, where M is a positive integer;

a second determination module, configured to determine the target TCI state of the target channel and/or the target signal from the M first TCI states;

Wherein, the target channel includes: at least one of the physical uplink control channel PUCCH, the physical downlink control channel PDCCH, the physical downlink shared channel PDSCH and the physical uplink shared channel PUSCH; or the target signal includes: the sounding reference signal SRS and at least one of channel state information reference signals CSI-RS.

In a fifth aspect, a terminal is provided. The terminal includes a processor and a memory, and the memory Programs or instructions executable on the processor are stored, and when executed by the processor, the steps of the method as described in the first aspect are implemented.

In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to obtain common beam information indicated by a network side device, wherein the common beam information includes M first TCI states, M is a positive integer; the processor is configured to determine the target channel and/or the target TCI state of the target signal from the M first TCI states; wherein the target channel includes: physical uplink control channel PUCCH, physical downlink At least one of the control channel PDCCH, the physical downlink shared channel PDSCH and the physical uplink shared channel PUSCH; or, the target signal includes: at least one of the sounding reference signal SRS and the channel state information reference signal CSI-RS.

In a seventh aspect, a network side device is provided. The network side device includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. The program or instructions are executed by the processor. When implementing the steps of the method described in the third aspect.

In an eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to indicate common beam information to a terminal, wherein the common beam information includes M first TCI states, M is a positive integer; the processor is configured to determine the target channel and/or the target TCI state of the target signal from the M first TCI states; wherein the target channel includes: physical uplink control channel PUCCH, physical downlink control channel PDCCH, physical downlink shared channel PDSCH and physical uplink shared channel PUSCH; or, the target signal includes: at least one of sounding reference signal SRS and channel state information reference signal CSI-RS.

A ninth aspect provides a wireless communication system, including: a terminal and a network side device. The terminal can be used to perform the steps of the TCI status determination method as described in the first aspect. The network side device can be used to perform the steps of the TCI status determination method as described in the first aspect. The steps of the TCI status determination method described in the three aspects.

In a tenth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented as described in the first aspect. The steps of the method described in the third aspect.

In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the method described in the first aspect. method, or implement a method as described in the third aspect.

In a twelfth aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement as described in the first aspect The steps of the TCI status determination method, or to implement the steps of the TCI status determination method described in the third aspect.

In this embodiment of the present application, the terminal obtains the common beam information indicated by the network side device, wherein the common beam information includes M first TCI states, M is a positive integer; the terminal obtains the M first TCI states from the Determine the target channel and/or the target TCI state of the target signal; wherein, the target channel includes: at least one of the physical uplink control channel PUCCH, the physical downlink control channel PDCCH, the physical downlink shared channel PDSCH and the physical uplink shared channel PUSCH. item; or, the target signal includes: at least one of a sounding reference signal SRS and a channel state information reference signal CSI-RS. In this way, PUCCH, PDCCH, PDSCH, PUSCH, SRS and CSI-RS can share the M first TCI states indicated by the network side equipment. By indicating the shared TCI states for different channels and/or signals, the complexity of beam indication is reduced. degree.

Description of drawings

Figure 1 is a schematic structural diagram of a wireless communication system to which embodiments of the present application can be applied;

Figure 2 is a flow chart of a TCI status determination method provided by an embodiment of the present application;

Figure 3 is a flow chart of another TCI status determination method provided by an embodiment of the present application;

Figure 4 is a schematic structural diagram of a TCI status determination device provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of another TCI state determination device provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 7 is a schematic diagram of the hardware structure of a terminal provided by an embodiment of the present application;

Figure 8 is a schematic structural diagram of a network side device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and "second" are distinguished objects It is usually one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th ^generation Generation, 6G) communication system.

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer. (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device) , Vehicle User Equipment (VUE), Pedestrian User Equipment (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (personal computer, PC), teller machine or self-service machine and other terminal side Equipment, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, Smart clothing, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side device 12 may include an access network device or a core network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a wireless access network unit. The access network device 12 may include a base station, a Wireless Local Area Network (Wireless Local Area Network, WLAN) access point or a Wireless Fidelity (Wireless Fidelity, WiFi) node, etc. The base station may be called a Node B, an Evolved Node B (Evolved Node B). , eNB), access point, Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home evolved B node, transmitting receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms, and needs to be explained However, in the embodiment of this application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

In wireless communications, after beam measurement and beam reporting, the network side equipment can perform beam instructions on the downlink and uplink channels or reference signals for network side equipment and user equipment (User Equipment, UE) (such as terminals) ), establish beam links between them to realize the transmission of channels or reference signals.

It should be noted that the beam information in the embodiment of this application may include at least one of the following:

Beam identification information, spatial relation information, spatial domain transmission filter information, spatial domain reception filter information, spatial filter information, transmission configuration indication status (TCI status) information, Quasi-colocation (QCL) information, QCL parameters. Among them, the downlink beam information can usually be represented by TCI status information or QCL information. Uplink beam information can usually be represented using TCI status information or spatial relation information.

In related technologies, each channel or reference signal has its own beam indication mechanism:

1) For the beam indication of the Physical Downlink Control Channel (PDCCH): the network side device uses Radio Resource Control (RRC) Signaling configures K TCI states for each control resource set (Control resource set, CORESET). When K>1, it is indicated or activated by the Media Access Control (Medium Access Control, MAC) control unit (Control Element, CE) 1 TCI state, when K=1, no additional MAC CE signaling is required. When the UE monitors the PDCCH, it uses the same QCL, that is, the same TCI state, for all search spaces (SS) in the CORESET to monitor the PDCCH. The reference signal (reference signal) in the TCI state, such as: periodic channel state information reference signal (Channel State Information Reference Signal, CSI-RS) resource (resource), semi-persistent CSI-RS resource, synchronization signal block (Synchronization Signal Block) , SSB), etc.) and the UE-specific (UE-specific) PDCCH Demodulation Reference Signal (DMRS) port is spatial QCL. The UE can learn which receiving beam is used to receive the PDCCH according to the TCI status.

2) For the beam indication of the Physical Downlink Shared Channel (PDSCH): the network side device configures M TCI states through RRC signaling, and then uses MAC CE signaling to activate TCI corresponding to up to 8 code points (codepoints) status, and then notify the TCI status through the 3-bit TCI field (field) of the Downlink Control Information (DCI). The referenceSignal in the TCI status and the DMRS port of the PDSCH to be scheduled are QCL. The UE can learn which receiving beam is used to receive the PDSCH according to the TCI status.

3) For CSI-RS beam indication: When the CSI-RS type is periodic CSI-RS, the network side device configures QCL information for the CSI-RS resource through RRC signaling. When the CSI-RS type is semi-persistent CSI-RS, the network side device indicates its QCL information when activating a CSI-RS resource from the CSI-RS resource set configured in RRC through MAC CE signaling. When the CSI-RS type is aperiodic CSI-RS, the network side device configures QCL for the CSI-RS resource through RRC signaling and uses DCI to trigger CSI-RS.

4) For the beam indication of the Physical Uplink Control Channel (PUCCH): the network side device uses RRC signaling to configure spatial relationship information (spatial) for each PUCCH resource through the parameter "PUCCH spatial relationship information (PUCCH-SpatialRelationInfo)" relation information), when the spatial relation information configured for the PUCCH resource contains multiple spatial relation information, use MAC CE to indicate or activate one of the spatial relation information. When the spatial relation information configured for the PUCCH resource only contains 1 At this time, no additional MAC CE signaling is required.

5) For the beam indication of the Physical Uplink Shared Channel (PUSCH): the spatial relation information of PUSCH is the sounding reference signal (Sounding Reference Signal, SRS) resource indication in the DCI when the DCI carried by the PDCCH schedules the PUSCH ( Each SRI codepoint of the SRS resource indicator (SRI) field indicates an SRI, which is used to indicate the spatial relation information of PUSCH.

6) For SRS beam indication: When the SRS type is periodic SRS, the network side device configures spatial relation information for the SRS resource through RRC signaling. When the SRS type is semi-persistent SRS, the network side device activates spatial relation information through MAC CE signaling. When the SRS type is aperiodic SRS, the network side device configures spatial relation information for the SRS resource through RRC signaling, and can update it through MAC CE signaling.

It can be seen from the above that in related technologies, different types of channels or reference signals need to be used to indicate the target TCI state through a beam indication process corresponding to the channel or reference signal. It can be seen that the beam indication process is relatively complicated.

In order to simplify the beam indication process, a new TCI framework was introduced in the public version (Release) 17 of the 3rd Generation Partnership Project (3GPP) of 5G NR, which can be called unified TCI Framework (unified TCI framework), that is, the same beam (beam) indicated by the network side device using MAC CE and/or DCI can be used for the transmission of multiple channels. This beam can also be called a common beam (common beam).

The beam indication process of the unified TCI framework is as follows:

The network side device configures a TCI state pool through RRC signaling, and uses MAC CE signaling to activate one or more TCI states in the TCI state pool. When MAC CE activates the TCI state corresponding to 1 codepoint, the activated TCI state is directly applied to the target signal. When the MAC CE activates the TCI status corresponding to multiple codepoints, the network side device then uses the TCI field in the DCI to indicate a codepoint, and the TCI status corresponding to the codepoint is applied to the target signal.

Among them, the TCI state in the unified TCI framework can include two modes: joint TCI state and independent TCI state. This mode is configured by RRC signaling of the network side device. Among them, for joint TCI status, each codepoint corresponds to 1 TCI status; For the separate TCI state, each codepoint can correspond to a downlink (Down Link, DL) TCI state and an uplink (Up Link, UL) TCI state, or 1 DL TCI state, or 1 UL TCI status.

For the source RS of TCI status, it can be divided into the following two situations:

1) DL: CSI-RS for beam management, CSI-RS for tracking;

2) UL: SSB, CSI-RS for beam management, CSI-RS for tracking, SRS for beam management (SRS for beam management).

For the target signal in the TCI state, it can be divided into the following two situations:

1) DL: UE-dedicated reception on PDSCH, UE-dedicated reception on all or subset of CORESETs, aperiodic CSI for CSI -RS resources (Aperiodic CSI-RS resources for CSI), aperiodic CSI-RS resources for BM (Beam Management, BM), associated with non-UE dedicated reception on CORESET DMRS(s) associated with non-UE-dedicated reception on CORESET(s) and the associated PDSCH(associated with the serving cell PCI));

2) UL: dynamic-grant/configured-grant based PUSCH (dynamic-grant/configured-grant based PUSCH), all of dedicated PUCCH resources (all of dedicated PUCCH resources), BM’s aperiodic SRS resources or resource set (Aperiodic SRS resources or resource sets for BM), SRS for antenna switching (SRS for antenna switching), SRS for codebook (SRS for codebook), SRS for non-codebook (SRS for non-codebook).

In the implementation, when the network side device uses DCI for beam indication, DCI formats 1_1/1_2 with DL allocation and DCI format 1_1/1_2 without DL allocation are supported.

Beam indication (Beam indication) The effective time (beam application time) of the TCI state indicated by DCI is defined as: the first time slot in which the indicated TCI state is applied is at least the last of the acknowledgment information of the joint or independent DL/UL beam indication The first slot to apply the indicated TCI is at least Y symbols after the last symbol of the first slot after the acknowledgment of the joint or separate DL/UL beam indication).

The path loss (pathloss RS, PLRS) in the power control parameters is configured in the TCI state by the network side device or is associated with the TCI state.

Other parameters in the power control parameters (such as P0, alpha, close loop index and other parameter configurations) are related to the TCI status by the network side device configuration. For PUCCH, PUSCH, and SRS, there will be respective parameter configurations (settings) associated with the TCI status, or included in the configuration information of each channel.

For a Carrier Aggregation (CA) scenario, the network indicates common QCL information (common QCL information) and/or a common UL TX spatial filter (common UL TX spatial filter(s) across a set of configured CC).

It should be noted that although the unified TCI framework was proposed in 3GPP R17 above, it is only applicable to single-TRP (single-TRP, sTRP) scenarios, and for multi-TRP (multi-TRP, mTRP) transmission introduced in 3GPP R16 does not apply. In other words, there is currently no solution to apply the unified TCI framework to each channel in the mTRP scenario, especially when the coherent joint transmission (CJT) transmission mode is used in the mTRP scenario, the unified TCI status indicated by the network side device The number of (state) (that is, the TCI state corresponding to the public beam in the unified TCI framework, and the unified TCI state is also called the public TCI state in the embodiment of this application) can reach 4. The relevant technology does not propose how to obtain the information from the network side device. The scheme for determining beam information for each channel or reference signal in the indicated unified TCI state.

The embodiment of this application proposes how to determine each channel from the unified TCI state (i.e. the first TCI state) indicated by the network side device when applying the unified TCI framework to the channel and/or reference signal in the mTRP scenario. Or the scheme of beam information of reference signal.

The TCI status determination method, TCI status determination device, terminal and network side device provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios.

Please refer to Figure 2. The embodiment of the present application provides a method for determining TCI status. The execution subject may be a terminal. The terminal may be various terminals 11 listed in Figure 1 or other types of terminals, which are not specifically limited here. . As shown in Figure 2, the TCI status determination method may include the following steps:

Step 201: The terminal obtains the common beam information indicated by the network side device, where the common beam information includes M first TCI states, where M is a positive integer.

Among them, the above-mentioned first TCI state can be understood as an activated or indicated TCI state that can be shared by each channel and reference signal in the mTRP scenario. For example, the network side device configures the TCI state pool through RRC signaling and uses MAC CE signaling. Let the TCI state corresponding to one or at least two codepoints be activated. When the number of codepoints corresponding to the activated TCI state is greater than 1, the network side device then uses the TCI field in the DCI to indicate at least part of the activated TCI state as the first TCI state. .

The multi-TRP scenario can be understood as one network side device may have at least two TRPs, and different TRPs may include the same and/or different beams. During the transmission process, the network side device may communicate with the terminal via one or more of the at least two TRPs.

Multi-TRP transmission can be divided into two situations: single DCI scheduling (sDCI) and multiple DCI (mDCI) scheduling based on control signaling:

1. Multi-DCI (multi-DCI, mDCI) scheduling: Each TRP sends its own PDCCH, and each PDCCH schedules its own PDSCH. At this time, multiple CORESETs configured for the UE are associated with different RRC parameter control resource set pool indexes ( CORESETPoolIndex) to use CORESETPoolIndex to correspond to different TRPs. At this time, the PDSCHs scheduled by the two TRPs can completely overlap, partially overlap, or not overlap, and the PUSCHs scheduled by the two TRPs cannot overlap.

2. Single DCI (single DCI, sDCI) scheduling: A TRP sends a PDCCH to schedule a PDSCH. At this time, multiple CORESET configured for the UE cannot be associated with different CORESETPoolIndex. In this case, MAC CE activates up to 8 code points, of which at least one code point corresponds to two TCI states. When the codepoint indicated by the TCI field in a DCI corresponds to two TCI states and indicates that one TCI state contains "QCL-TypeD", it means that the PDSCH is scheduled from two TRPs. The PDSCH includes multiple transmission schemes, such as: different PDSCH The data of the layer corresponds to two TCI states (Scheme 1a, Space Division Multiplexing (SDM)); or the data on different frequency domain subcarriers corresponds to two TCI states (Scheme 2a/2b, Frequency Division Multiplexing (SDM)) Frequency Division Multiplex (FDM)); or each time domain repetition comes from a different TRP (Scheme 3/4, Time Division Multiplexing (TDM)).

3GPP R17 in the related technology supports the PDCCH repetition (repetition) transmission scheme in the mTRP scenario, and this scheme can only be applied in sDCI scheduling.

Specifically, the two search space sets (SS sets) where the PDCCH is located are explicitly configured to be related to each other through RRC signaling. Among them, the two SS sets are not limited to being associated with the same or different CORESET. There is no restriction on whether the TCI state of CORESET associated with two SS sets is the same or different. The UE does not expect the third monitored SS set to be associated with any of the above two interrelated SS sets. Two interrelated SS sets have the same period, starting position (offset), duration (duration), number of monitoring occasions, aggregation level (Aggregation Level, AL), etc. The nth monitoring occasion of one SS set is associated with the nth monitoring occasion of another SS set, and the two candidate PDCCHs have the same candidate index (candidate index). Inter-slot PDCCH repetition is not supported. The above SS set can only be the terminal-specific search space (UE-specific Search Space, USS) and Type3 common search space (Common Search Space, CSS). The SS set configured by the RRC parameter recovery search space Id (recoverySearchSpaceId) is not associated with other SS sets.

In related technology, 3GPP R17 supports a DCI dynamically scheduled TDM PUSCH repetition transmission scheme in the mTRP scenario.

Specifically, each PUSCH repetition is sent using multiple transmit beams (spatial relations) corresponding to different TRPs to improve the reliability of PUSCH transmission. For Type A (slot-level) PUSCH repetition, one PUSCH repetition refers to one PUSCH transmission opportunity in each time slot; for Type B PUSCH repetition, one PUSCH repetition is a nominal repetition. DCI can indicate two sets of beams (spatial relation), precoding matrix (Transmitted Precoding Matrix Indicator, TPMI), power control parameters, etc., and a 2-bit new indication field is added to DCI to support single TRP (single TRP, sTRP ) and mTRP, and flexibly exchange the order of PUSCH repeated transmission beams. The mapping relationship between each PUSCH repetition and the beam can be configured by RRC parameters as cyclic mapping and sequential mapping.

In related technology, 3GPP R17 supports the PUCCH repetition transmission scheme in multiple TRP scenarios.

Specifically, if the network activates the spatial relationship between the two beams for PUCCH resources or PUCCH group, then the PUCCH will be transmitted using two beams each time.

The mapping relationship between each PUCCH repetition and the beam can be configured by RRC parameters as mapping in turn. (cyclic mapping) and continuous mapping (sequential mapping).

3GPP R17 in related technologies supports the PDCCH Single Frequency Network (SFN) transmission scheme and the PDSCH SFN transmission scheme.

Specifically, RRC signaling configures the SFN transmission scheme of PDCCH or PDSCH. Among them, PDCCH can only be monitored on USS or Type3CSS.

The MAC CE command can activate 2 TCI states for PDCCH to use 2 beams for SFN transmission.

The SFN transmission scheme includes scheme 1 (UE advanced receiver) and pre-compensation. Among them, SFN PDCCH (scheme 1) can schedule sTRP PDSCH (UE capability (capability)), SFN PDCCH (scheme 1, pre-compensation) can schedule SFN PDSCH (scheme 1 or pre-compensation, the two modes are scheduled in one-to-one correspondence), sTRP PDCCH (only associated with USS or type3CSS (only associated with UE-specific Search Space (USS) or type3Common Search Space (type3CSS))) can schedule sTRP PDSCH (legacy) or SFN PDSCH (scheme1+precompensation), sTRP PDCCH associated with CSS or CSS+USS can schedule sTRP PDSCH. However, SFN PDCCH cannot schedule the PDSCH transmission scheme in 3GPP R16.

In the embodiment of this application, the unified TCI framework can be applied to the TCI determination scheme of PDCCH, PDSCH, PUSCH, SRS and CSI-RS in the above mTPR scenario.

In implementation, the M first TCI states include at least one of the following: M1 joint TCI states, M2 separate DL TCI states, and M3 separate UL TCI states, where M1, M2, and M3 are respectively greater than or equal to 0. An integer, and at least one of M1, M2, and M3 is greater than 0.

In implementation, the above-mentioned M can usually be equal to 2. Of course, in the CJT transmission mode, M can also be greater than 2 (for example: M=4), or M can also be equal to 1. For the convenience of explanation, in the following embodiments, usually Taking M=2 in the non-CJT transmission mode and M=4 in the CJT transmission mode as a typical example for explanation, the number of the first TCI states is not specifically limited here.

Step 202: The terminal determines the target channel and/or the target TCI state of the target signal from the M first TCI states; wherein the target channel includes: physical uplink control channel PUCCH, physical downlink control channel PDCCH, Physical downlink shared channel PDSCH and physical uplink shared channel At least one of PUSCH; the target signal includes: at least one of sounding reference signal SRS and channel state information reference signal CSI-RS.

Among them, the terminal can determine the target TCI state used by each target channel and/or target signal according to instructions from the network side device, pre-agreed rules in the protocol, etc. In order to enable the channels and/or signals in the mTRP scenario (including: PUCCH, PUSCH, UL RS, PDCCH, PDSCH, CSI-RS, etc.), the unified TCI state can be applied.

In one implementation, the above-mentioned method of determining the target TCI status used by each target channel and/or target signal according to instructions from the network side device may be that the network side device indicates the identification of the TCI status used by each channel or signal, Or the network side device may indicate the correspondence between the first identifier of each channel or signal and the TCI status, etc., so that the TCI status used by each channel or signal can be determined according to the instructions of the network side device.

In another implementation, the above-mentioned method of determining the target TCI status used by each target channel and/or target signal is based on a pre-agreed rule in the protocol. The relevant information of each channel or signal can be agreed in the protocol (such as: The corresponding relationship between the channel or signal type, the number of required TCI states, corresponding identifiers, etc.) and the TCI state, the conditions for each channel or signal to adopt a certain TCI state, the selection range of the TCI state of each channel or signal, etc., thus The TCI status used by each channel or signal can be determined based on pre-agreed rules in the negotiation.

As an optional implementation manner, the terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states, including:

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to target information, wherein the target information includes at least one of the following:

1) The number of the first TCI states. In an implementation, the quantitative relationship between the number of TCIs applicable to the target channel and/or the target signal and the number of TCI states required by the target channel and/or the target signal may be determined based on the number of first TCI states, thereby taking the The strategy that matches the quantitative relationship between the two is used to determine the target TCI state of each target channel and/or target signal. For example: if the number of the first TCI state is greater than or equal to the number of TCI states required by the target channel and/or target signal, Then all TCI states of the target channel and/or the target signal can be updated according to the M first TCI states. If the number of first TCI states is less than the number of TCI states required by the target channel and/or the target signal, then it can be updated according to The M first TCI states are used to update the target channel and/or target Part of the TCI status of the target signal, or adjust the target channel and/or the transmission mode of the target signal;

2) Correspondence between the first TCI state and first identification information, where the first identification information is used to identify the target channel and/or the target signal. In an implementation, the first TCI state corresponding to each target channel and/or the target signal may be determined according to the corresponding relationship between the first TCI state and the first identification information, so that the target channel and/or the target signal Use its corresponding first TCI state.

Optionally, the corresponding relationship between the first TCI state and the first identification information includes at least one of the following:

The corresponding relationship between the arrangement positions of the M first TCI states and the arrangement positions of the first identification information;

Correspondence between the first TCI status indicated by the network side device and the first identification information.

In one implementation, each target channel and/or signal may be determined according to the corresponding relationship between the arrangement positions of the M first TCI states indicated by the network side or agreed upon by the protocol and the arrangement positions of the first identification information. The arrangement position of the first identification information is used to determine the corresponding first TCI state;

In another implementation, the target channel corresponding to each first identification information and/or the TCI state used by the signal is indicated according to the corresponding relationship between the first TCI state indicated by the network side and the first identification information. .

3) The number of first identification information corresponding to the target channel and/or target signal. In implementation, the number of first TCI states required by the target channel and/or the target signal can be determined based on the number of first identification information corresponding to the target channel and/or the target signal, for example: each SRS resource set (SRS resource The SRS resource in the set uses the same first TCI state corresponding to the SRS resource set;

4) The value of the first identification information corresponding to the target channel and/or target signal. In an implementation, the first TCI state corresponding to the value of the first identification information may be determined according to the value of the first identification information corresponding to the target channel and/or the target signal as the TCI state used by the target channel and/or the target signal. ;

5) The arrangement order or position of the M first TCI states. In the implementation, the arrangement order or position of the M first TCI states may be used as the first TCI state and the target channel and/or target signal. The basis for the correspondence between them, for example: the first TCI state ranked first corresponds to the target channel and/or target signal of the first identification information with the smallest value, the first TCI state ranked second and Corresponding to the target channel and/or target signal of the smallest piece of first identification information whose value is greater than the smallest first identification information;

6) The arrangement order of the first identification information corresponding to the target channel and/or target signal. In implementation, the arrangement order of each first identification information can be used as the basis for the corresponding relationship between the first TCI state and the target channel and/or the target signal. For example: the first TCI state arranged first and the first TCI state arranged first The first identification information in the first position corresponds to the target channel and/or the target signal, and the first TCI state arranged in the second position corresponds to the target channel and/or target signal of the first identification information arranged in the second position;

7) The type of target channel and/or target signal. In implementation, the types and numbers of TCI states used by different types of target channels and/or target signals may be different, and the TCI states used by them can be determined from the M first TCI states according to different corresponding rules;

8) The target channel and/or the transmission mode of the target signal. The transmission mode of the target channel and/or target signal may include: repetition transmission mode, multi-beam simultaneous transmission (for example: Single Frequency Network (SFN) transmission, frequency division multiplexing (Frequency Division Multiplex, FDM) ), Space Division Multiplex (SDM) and other transmission modes, preset transmission mode (i.e. single beam transmission mode without repetition) or the preset transmission mode, the repeated transmission mode and the multi-beam simultaneous The transmission mode is a transmission mode that is dynamically switched. It should be noted that in the following embodiments, for the convenience of explanation, the mode of simultaneous multi-beam transmission is collectively called the SFN transmission mode, which does not constitute a specific limitation here. In the implementation, different The target channel of the transmission mode and/or the number of TCI states used by the target signal may be different, and the TCI state under the corresponding model can be determined from the M first TCI states according to different corresponding rules;

9) The time domain behavior of the target channel and/or target signal. Among them, the time domain behavior may include periodic, semi-persistent, aperiodic, target channels and/or target signals with different time domain behaviors, and their triggering or scheduling or configuration processes may be different. In this case, the target channels and/or target signals may be triggered, scheduled, or configured differently. The time domain behavior of the signal matches the rules to determine the TCI state under the corresponding model. For example: for aperiodic signals, the indication domain in the DCI that triggers the aperiodic signal can be reused to indicate the TCI state used;

10) First information or second information, the first information represents the first downlink control information DCI modulation If PUSCH or PDSCH is scheduled, the second information indicates that PUSCH or PDSCH is not scheduled by the first DCI, and the first DCI is used to trigger the target signal or schedule the target channel. In an implementation, if the first DCI that triggers the target signal or schedules the target channel also schedules PUSCH or PDSCH, the TCI status of the target signal or target channel can be determined, and the respective TCI status of PUSCH or PDSCH can be Same or different or corresponding to each other;

11) The target indication field of the first DCI, the target indication field is used to indicate at least one of the M first TCI states. In an implementation, the first TCI state used by at least one of the target signal or the target channel and the PUSCH or the PDSCH may be indicated through the target indication field of the first DCI.

It should be noted that, in order to facilitate the distinction between the field used to indicate the TCI status used for CSI-RS resource and the field used to indicate the TCI status used by the scheduled PDSCH in this application, the target indication field in the first DCI is distinguished as The first field, the second field and the third field, where the first field is used to indicate the TCI status of the triggered SRS resource; the second field is used to indicate the TCI status of the triggered CSI-RS resource; the third field is used to indicate TCI status of scheduled PDSCH or PUSCH.

12) N preset TCI states, the common beam information includes the N preset TCI states, and N is a positive integer less than or equal to M.

Optionally, the TCI status determination method further includes:

The terminal determines the N preset TCI states from the M first TCI states according to third information, wherein the third information is indicated by the network side device or agreed by the protocol;

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The terminal determines the target TCI state of the target channel and/or the target signal from the N preset TCI states according to the target information.

In this embodiment, the N preset TCI states may be N TCI states selected from the M first TCI states as indicated by the network side device or agreed in the protocol. In this way, the target channel and/or target channel are subsequently determined. When selecting the target TCI of a signal, you can select from the N preset TCI states, thus narrowing the selection range of TCI states.

13) The correspondence between the N preset TCI states and the first identification information. The N The corresponding relationship between the preset TCI states and the first identification information is similar to the corresponding relationship between the M first TCI states and the first identification information, and will not be described again here.

In the implementation, depending on the type, transmission mode, etc. of the target channel and/or target signal, the number, type, etc. of TCI states required by the target channel and/or target signal will also change. In this way, there will be a network The number of first TCI states indicated by the side device is greater than, less than, or equal to the number of TCI states required by the target channel and/or the target signal.

Optionally, when the target signal includes SRS, the above-mentioned first identification information includes at least one of the following:

SRS resource set identification information. In implementation, one SRS resource set may include at least one SRS resource. In this case, the target signal includes the SRS of all SRS resources in the SRS resource set identified by the SRS resource set identification information;

SRS resource identification information. At this time, the target signal includes the SRS of the SRS resource identified by the SRS resource identification information.

Optionally, when the target signal includes CSI-RS, the above-mentioned first identification information includes at least one of the following:

Channel state information reference signal CSI-RS resource set identification information. In implementation, a CSI-RS resource set may include at least one CSI-RS resource group, and each The CSI-RS resource group may include at least one CSI-RS resource (CSI-RS resource). At this time, the target signal includes all CSI-RS resource groups in the CSI-RS resource set identified by the CSI-RS resource set identification information. CSI-RS on all CSI-RS resources;

CSI-RS resource group identification information. At this time, the target signal includes CSI-RS on all CSI-RS resources in the CSI-RS resource group identified by the CSI-RS resource group identification information;

CSI-RS resource identification information. At this time, the target signal includes CSI-RS on the CSI-RS resource identified by the CSI-RS resource identification information.

Optionally, when the target channel includes PDCCH, the above-mentioned first identification information includes at least one of the following:

Control resource set CORESET group identification information, where a CORESET group can include at least one CORESET. At this time, the target channel can include PDCCH on all CORESETs in the CORESET group identified by the CORESET group identification information;

CORESET identification information. At this time, the target channel may include the PDCCH on CORESET identified by the CORESET identification information;

Search space set identification information. At this time, the target channel may include PDCCH on the search space set identified by the search space set identification information.

Optionally, when the target channel includes PDSCH or PUSCH, the above-mentioned first identification information includes at least one of the following:

Demodulation Reference Signal (DMRS) group identification information of the target channel;

DMRS port identification information of the target channel;

The frequency domain resource identification information of the target channel;

The layer identification information of the target channel.

Based on the above DMRS group identification information, DMRS port identification information, frequency domain resource identification information, and layer identification information, the DMRS group (group), DMRS port (port), frequency domain resource, and layer (layer) of PDSCH or PUSCH can be identified, so that , which can indicate the TCI status used by each DMRS group, DMRS port, frequency domain resource or layer of PDSCH or PUSCH.

Of course, when the target channel includes PUCCH, the above-mentioned first identification information includes identification information of PUCCH resources or PUCCH resource groups, such as: PUCCH resource ID or PUCCH resource group ID, which is not exhaustive here.

In this embodiment, the target channel or target signal can be identified through the above-mentioned first identification information, so that the TCI state used by the target channel or target signal corresponding to each identification can be determined based on the corresponding relationship between the identification and the TCI state. .

The method for determining the TCI status provided by the embodiments of this application will be described in detail below in conjunction with specific application scenarios:

Scenario 1: Determine the target TCI state of the SRS based on the indicated unified TCI state.

The network side device can be configured with one or more SRS resource sets. The usage of the SRS resource set can be configured by the network as codebook, non-codebook, antenna switching, Beam management (beam management), etc.

In the implementation, the network side device can be configured to enable or disable the SRS resource set to use the unified TCI state. For example, the parameters can be unified in the configuration information of the SRS resource set. The value of TCI state (followUnifiedTCIstate) is set to enabled (enabled) to enable the SRS resource set to use unified TCI state.

Furthermore, the SRS may be periodic SRS or aperiodic SRS or semi-continuous SRS. Two methods are provided below to determine the target TCI status of SRS:

Method 1: For aperiodic SRS, use a different method from SRS with other time domain behaviors to determine the target TCI state:

For aperiodic SRS, it can be triggered by the first DCI. At this time, the target TCI state of the aperiodic SRS can be determined according to at least one of the following:

As an optional implementation manner, when the first DCI is used to schedule PUSCH, the target indication field indicates the TCI status of the PUSCH scheduled by the first DCI, and the M first TCI statuses include The TCI status of the PUSCH scheduled by the first DCI;

The terminal determines that the target TCI state of the target signal includes the TCI state indicated by the target indication field, and the target signal includes at least one of the following:

SRS in the SRS resource set that the terminal needs to send, wherein the SRS resource set that the terminal needs to send is based on the correspondence between the SRS resource set identification information triggered by the first DCI and the first TCI state, and The TCI status indicated by the target indication field is determined;

SRS among the SRS resources that the terminal needs to send, wherein the SRS resources that the terminal needs to send are based on the corresponding relationship between the SRS resource identification information triggered by the first DCI and the first TCI state, and the The TCI status indicated by the target indication field of the first DCI is determined;

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.

Wherein, the corresponding relationship between the SRS resource set identification information and the first TCI state may be the corresponding relationship between the SRS resource set identification information and the M first TCI states, or the corresponding relationship between the SRS resource set identification information and the M first TCI states. The corresponding relationship between the N preset TCI states is not specifically limited here.

In this embodiment, when the first DCI that triggers SRS also schedules PUSCH, the TCI status indicated by the target indication field in the first DCI can be used preferentially for the scheduled PUSCH, and the TCI status triggered by the first DCI All or part of the SRS may use the TCI status.

As a possible implementation method, the number of SRS resource sets triggered by the first DCI, or the number of SRS resources in the SRS resource set triggered by the first DCI, and the TCI indicated by the first field of the first DCI When the number of states is equal, or the TCI state of the SRS resource in the SRS resource set corresponds to the TCI state indicated by the first field, the terminal can determine that the target signal includes the entire SRS resource set triggered by the first DCI or the TCI state in the SRS resource. SRS, and determine the corresponding relationship between each SRS and the TCI state indicated by the first field, thereby determining the TCI state used by each SRS.

For example: the network side device instructs PUSCH through the first field to use 1 TCI state among M1 jointTCI states and M3 separate UL TCI states. If the first DCI indication triggers an SRS resource set, then the SRS in the SRS resource set The resource also uses the TCI state indicated by the first field.

As a possible implementation manner, when the target signal includes SRS in the SRS resource set that the terminal needs to send, the terminal determines the SRS resource set identification information triggered by the first DCI and the first TCI state. The corresponding relationship between them, and the TCI status indicated by the target indication field determines the SRS resource set that needs to be sent, and the first TCI status corresponding to each SRS resource set. That is to say, the terminal only needs to send the SRS in the SRS resource set corresponding to the TCI state indicated by the first field. For SRS triggered by DCI and not corresponding to the SRS resource set corresponding to the TCI state indicated by the first field, it can Do not send.

For example: the network side device instructs PUSCH to use 1 TCI state among the M1/M3 TCI states through the first field, and the network side device is pre-configured or the protocol pre-agrees the correspondence between the SRS resource set and the M1/M3 TCI states. relationship, then only the SRS in the triggered SRS resource set corresponding to the TCI state indicated by the first field will be sent.

Another example: the network side device instructs PUSCH to use K > 1 TCI state among M1/M3 TCI states through the first field, and the first DCI triggers K SRS resource sets, then the K TCI states indicated by the first field They are respectively used as the TCI state of the SRS resource in the K SRS resource set, where the K SRS resource set corresponds to the K TCI state one-to-one.

As a possible implementation manner, when the target signal includes SRS in the SRS resources that the terminal needs to send, the terminal triggers the SRS resource identification information according to the first DCI. The corresponding relationship between the information and the first TCI status, and the TCI status indicated by the target indication field determines the SRS resources that need to be sent, and the first TCI status corresponding to each SRS resource. That is to say, the terminal only needs to send the SRS in the SRS resource corresponding to the TCI state indicated by the first field. For SRS triggered by DCI and not corresponding to the TCI state indicated by the first field, the SRS can be Do not send.

For example: the network side device instructs PUSCH to use L (L ≥ 1) TCI states among M1/M3 TCI states through the first field, and the first DCI triggers 1 SRS resource set, and the SRS resource set contains L SRS resource, then the L TCI states indicated by the first field are used as the TCI states of the L SRS resources in the triggered SRS resource set.

As an optional implementation manner, when the first DCI is used to schedule PDSCH, the target indication field indicates the TCI status of the PDSCH scheduled by the first DCI, and the M first TCI statuses include A TCI state corresponding to the same code point as the third TCI state and the third TCI state, where the third TCI state includes the TCI state of the PDSCH scheduled by the first DCI;

The terminal determines that the target TCI state of the target signal includes a TCI state corresponding to the same code point as the third TCI state or the third TCI state, and the target signal includes at least one of the following:

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.

In this embodiment and the previous optional embodiment, when the first DCI schedules PUSCH, the terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states based on the target information. The process is similar, except that when the first DCI schedules PUSCH, the TCI state indicated by the first field in the first DCI is the joint TCI state and/or UL TCI state; when the first DCI schedules PDSCH, The TCI indicated by the first field in the first DCI The status is joint TCI status and/or DL TCI status. SRS needs to use the UL TCI state. In this embodiment, if the TCI state indicated by the first field is the DL TCI state, the TCI state used for the SRS is determined from the UL TCI state corresponding to the same code point as the DL TCI state. , For the corresponding relationship between each SRS resource set/resource and the TCI status, reference can be made to the previous optional implementation manner, which will not be described again here.

It is worth mentioning that in the above embodiments, the SRS resource set/SRS resources that need to be sent can be determined in the following manner:

1a) Determine the SRS resource set that needs to be sent through the SRS trigger state indicated by the SRS request field in the first DCI (it should be noted that in the related technology, SRS trigger state supports up to 4 trigger state, in the embodiment of this application, M can be greater than 2, for example: M=4, in which case the bit size of the SRS request field needs to be expanded (bit size).

For example: Assume the first SRS resource set: where ID=2, usage is codebook, trigger state (trigger state) is 1 and 2, corresponding to UL TCI state1; the second SRS resource set: where ID=4, usage is codebook , trigger state is 2 and 3, corresponding to UL TCI state2. In this way, when the SRS trigger state=1 indicated by the SRS request field in DCI, the SRS resource in the first SRS resource set is sent; when the SRS trigger state=2 indicated by the SRS request field in DCI, the first SRS resource is sent. The SRS resource in the SRS resource set and the SRS resource in the second SRS resource set; when the SRS trigger state=3 indicated by the SRS request field in the DCI, the SRS resource in the second SRS resource set is sent.

2a) The SRS trigger state indicated by the SRS request field in the first DCI corresponds to -When the SRS resource set of the codebook corresponds to the same trigger state), the SRS resource set indicator field (SRS resource set indicator field) in the first DCI indicates that the trigger corresponds to the same trigger state. X = one or 2 of the 2 SRS resource sets , and indicates the order of the two SRS resource sets.

For example: Suppose the first SRS resource set: ID=2, usage is codebook, trigger state is 2, corresponding to UL TCI state1; the second SRS resource set: ID=4, usage is codebook, trigger state is 2, Corresponds to UL TCI state2. In this way, when the SRS trigger state indicated by the SRS request field in DCI=2, if the SRS resource set indicator in DCI field indicates 0, send the SRS resource in the first SRS resource set; if the SRS resource set indicator field in the DCI indicates 1, send the SRS resource in the second SRS resource set; if the SRS resource set indicator field in the DCI indicates 2 or 3, send the SRS resource in the first SRS resource set and the SRS resource in the second SRS resource set.

Of course, the above-mentioned first DCI triggering the SRS may not schedule PUSCH or PDSCH. In this case, the TCI state used by the SRS triggered by the first DCI can be determined in the following manner.

As an optional implementation manner, when the target signal includes SRS and the periodic behavior of the SRS is aperiodic, the terminal determines the target from the M first TCI states based on the target information. Target TCI status of the channel and/or target signal, including:

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then the terminal The corresponding relationship between the K SRS resource sets and the K first TCI states determines the TCI state of each SRS resource set in the K SRS resource sets, wherein the target TCI state includes the Kth A TCI state, K is a positive integer; and/or,

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then the terminal The corresponding relationship between the SRS resource sets and the X first TCI states determines the TCI state of each SRS resource in the K SRS resource sets, wherein the target channel and/or target signal includes the There are K SRS resource sets, and the target TCI state includes the X first TCI states, where X represents the total number of SRS resources included in the K SRS resource sets, and X is a positive integer.

In this implementation, SRS resources in the same SRS resource set can use the same TCI state, and SRS resources in different SRS resource sets can use different TCI states, or different SRS resources in the same SRS resource set can also use Different TCI status.

For example: Assume that the M first TCI states include M1=4 joint TCI states and M3=4 UL TCI states, and the first field in the first DCI indicates the field for each of the M1/M3 TCI states. The target TCI state of the SRS resource can be determined by distinguishing the following situations to determine the TCI state used by each SRS resource:

Case 1: When the first DCI only triggers K=1 SRS resource set, the first field indicates A TCI state (can be to use the first field to indicate one of the TCI states from the M first TCI states indicated by the network side device, or to first determine N presets from the M first TCI states indicated by the network side device) TCI state, and then use the first field to indicate one TCI state among N preset TCI states) that is the TCI state of all SRS resources in the SRS resource set (such as indicating 1 of 4 TCI states);

Case 2: When the first DCI only triggers K = 1 SRS resource set (including L SRS resources), the first field indicates L TCI states (can be used for the M first TCI states indicated by the network side device) The first field indicates L TCI states among them, or N preset TCI states are first determined from the M first TCI states indicated by the network side device, and then the first field is used to indicate L of the N preset TCI states. TCI state), respectively used as the TCI state of L SRS resources in the SRS resource set. For example: the first TCI state is used as the TCI state of the first SRS resource, the second TCI state is used as the TCI state of the second SRS resource, and so on.

Optionally, the corresponding relationship between the above L TCI states and L SRS resources can be indicated by signaling of the network side device, such as indicating that the first SRS resource corresponds to the first TCI state or the first TCI among the L. state, and so on, or the corresponding relationship between the above L TCI states and L SRS resources does not require signaling instructions from the network side device, but is based on the ordering of SRS resource ID and TCI state (the ordering of TCI state can be Corresponding to the sorting of all TCI state IDs corresponding to a codepoint (codepoint), or the sorting between codepoints (codepoints) corresponding to each TCI state), such as: the smallest SRS resource ID corresponds to the first of L TCI states TCI state;

Case 3: When the first DCI triggers K>1 SRS resource set, the first field indicates K TCI states (the first field can be used to indicate K of the M first TCI states indicated by the network side device) TCI state, or first determine N preset TCI states from the M first TCI states indicated by the network side device, and then use the first field to indicate K TCI states among the N preset TCI states), which are used for each The TCI state of the SRS resource in the SRS resource set, for example: the first TCI state is used as the TCI state of the SRS resource in the first SRS resource set, and the second TCI state is used as the TCI state of the SRS resource in the second SRS resource set. , and so on.

Optionally, it is similar to the above-mentioned corresponding relationship between L TCI states and L SRS resources. , the corresponding relationship between the above K SRS resource sets and K TCI states can also be indicated through signaling by the network side device, such as indicating that the first set corresponds to the first TCI state or the first TCI state among the K. , and so on; or the corresponding relationship does not require signaling instructions from the network side device, but corresponds to the order of SRS resource set ID and TCI state. For example, the smallest SRS resource set ID corresponds to the first TCI state among K.

In the above embodiments, it is provided that how to determine the TCI status used by each aperiodic SRS (that is, the SRS triggered by the first DCI) according to the instruction of the first DCI and distinguish whether the first DCI schedules PUSCH or PDSCH. solution.

Method 2: The following embodiment also proposes an implementation method that can use the same method to determine the TCI state used by each SRS for SRS with any time domain behavior (such as periodic, semi-persistent, aperiodic):

1b) The network uses first signaling (such as RRC signaling or MAC CE command or DCI signaling) to indicate one or more TCI states used by each SRS resource set/resource. For example, N preset TCI states are determined from M first TCI states using network instructions or protocol agreements, or M first TCI states are used, and N preset TCI states are determined based on the first signaling or The TCI state for each SRS resource set/resource among the M first TCI states.

2b) Determine the TCI state of the SRS according to the corresponding relationship between the M first TCI states indicated by the network and the SRS resource set/resource.

For example: According to the order in which the M first TCI states indicated by the network are arranged in their corresponding codepoints (or the order in which the codepoints corresponding to each first TCI state are arranged) and the SRS resource set IDs are sorted from small to large, proceed one by one. Correspondingly, either one first TCI state corresponds to multiple SRS resource sets, or multiple first TCI states correspond to one SRS resource set.

Among them, if an SRS resource set corresponds to multiple TCI states, the SRS resources in the SRS resource set also have a corresponding relationship with the multiple TCI states, which can be the SRS resource ID from small to large and the multiple TCI states (or multiple TCI states). The order corresponding to the codepoint corresponding to the state).

3b) According to network instructions or protocol agreements, determine N preset TCI states from the M first TCI states indicated by the network, and then use a method similar to the above method 2a) to determine the N preset TCI states and SRS resource set according to the network instructions. The corresponding relationship, and/or, according to N preset TCI states and SRS resources The corresponding relationship determines the target TCI state of SRS.

As an optional implementation, m is the number of first TCI states suitable for the target channel and/or target signal included in the M first TCI states or the N preset TCI states, K is the number of first identification information corresponding to the target channel and/or target signal;

When m is equal to K, the terminal determines that the target TCI state of the target channel and/or target signal includes the m first TCI states; and/or,

In the case where m is greater than K, the terminal determines the K TCI states among the m first TCI states that are located at preset positions or indicated by the first indication information from the network side device as the target TCI status of the target channel and/or target signal; and/or,

When m is less than K, the terminal determines the m first TCI states as the TCI states of the target channels and/or target signals corresponding to the m first identification information. m pieces of first identification information among the K pieces of first identification information and arranged in a preset position or indicated by the second indication information from the network side device; and/or,

The terminal determines that the target TCI state includes the m first TCI states and the original (K-m) TCI states of the target channel and/or target signal.

When m is greater than K, the above-mentioned first indication information can be used to indicate part of the first TCI states. For example, based on the first indication information, N preset TCI states are first indicated from M first TCI states. At this time, The K TCI states can be all or part of the N preset TCI states. Of course, the above K TCI states can also be K ones arranged at preset positions among the M first TCI states/N preset TCI states. , such as: the top K ones, or the above-mentioned first indication information can be used to indicate the first TCI state corresponding to the K target channels and/or the target signal.

When m is less than K, the above-mentioned second indication information may be used to indicate the target channel and/or target signal that the terminal needs to send, or to indicate the target channel and/or target signal corresponding to the m first TCI states.

For example: Assume that the network side device is configured with K SRS resource sets or SRS resources whose usage is codebook or noncodebook. If the network side device indicates M1 ≥ 1 joint TCI state or M3 ≥ 1 UL TCI state (that is, m equals M1 or M3), then the K SRS resources The corresponding relationship between set or SRS resource and UL unified TCI, including one of the following:

1c) K=m, then according to the order of m UL unified TCI state and the order of K SRS resource set/SRS resource, or according to the corresponding relationship between m UL unified TCI state and K SRS resource set/SRS resource , one-to-one correspondence between m and K SRS resource set/SRS resource;

2c) K>m, the first m of K SRS resource set/SRS resource correspond to m UL unified TCI states one-to-one, other SRS resource set/SRS resource are not transmitted, among which, K SRS resource set/SRS resource The first m of them may be the SRS resource set/SRS resource that the terminal needs to send as determined in the above embodiment, or the SRS resource set/SRS resource using m UL unified TCI states as indicated by the network side device; at this time, for The remaining (K-m) SRS resource set/SRS resource does not need to be sent.

3c) K＜m, K SRS resource set/SRS resource corresponds to K UL unified TCI state one-to-one, among which, K UL unified TCI state can be the top K among M1/M3 UL unified TCI states. , or the network side equipment indicates or the N preset TCI states agreed in the protocol include K UL unified TCI states, or the network side equipment configuration indicates the UL unified TCI states used by K SRS resource set/SRS resource respectively; at this time , the remaining (K-m) UL unified TCI states can be used for other channels or signals.

As an optional implementation manner, when M is equal to 1, the terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states, including:

The terminal updates the first preset TCI state among the original TCI states of the target channel and/or target signal according to the first TCI state, and obtains the target TCI state of the target channel and/or target signal. , the first preset TCI state is one of the original TCI states of the target channel and/or the target signal; or,

The terminal determines that the target channel or target signal performs single beam or single TRP transmission based on the 1 first TCI state; or,

The terminal determines that the target channel and/or the target signal share the first TCI state.

Wherein, the terminal determines that the target channel and/or the target signal is transmitted in a single beam or a single TRP based on the 1 first TCI state, including:

The terminal determines that the target channel and/or target signal that needs to be transmitted includes the first The target channel and/or target signal associated with the TCI status; or,

The target channel and/or target signal that the terminal determines needs to be transmitted include the target channel and/or target signal associated with the target resource corresponding to the one first TCI state;

Wherein, the target resources include at least one of the following:

Cell identity, physical cell identity, bandwidth part (BWP) identity, sending and receiving point TRP identity, public TCI status pool identity, public TCI status type value, CORESET group identity, CORESET identity, channel group identity, CORESET pool identity, Search space set identifier, search space ID, synchronization signal block SSB ID, SSB group ID.

For example: when the network indicates M1/M2/M3=1 (i.e. M=1) unified TCI states, the target channel/target signal and its target TCI state can be determined according to the following method:

1d) Update the preset TCI state in the TCI state currently used by the target channel/target signal. The preset TCI state can be one of the TCI states indicated by the network and currently used by the target channel/target signal, or by The protocol agreement or default method fixes the preset TCI state to a certain TCI state among the TCI states currently used by the target channel/target signal (such as the first TCI state), and the unupdated TCI state remains unchanged, where, The target channel/target signal corresponds to the above-mentioned preset TCI state (such as the network side device indicates the corresponding relationship, or the protocol stipulates the corresponding relationship);

2d) Will switch to single beam or single TRP transmission mode:

2d-1) Determine the SRS resource set/SRS resource to be transmitted based on the TCI state. The SRS resource set/SRS resource associated with the TCI state or the TRP corresponding to the TCI state uses the TCI state. The remaining SRS resource set/SRS resource stops sending. Or the network side device only instructs the terminal to send the SRS resource set/SRS resource associated with the TCI state or the TRP corresponding to the TCI state. At this time, the target channel/target signal includes the SRS resource set/SRS resource corresponding to the TCI state, or the target channel/target signal includes the SRS resource set/SRS resource associated with the TRP corresponding to the TCI state.

2d-2) All SRS resource set/SRS resource use this TCI state, that is, the target channel/target signal includes all SRS resource set/SRS resource.

In this implementation, the same method can be used to determine the target TCI state for SRS with any time domain behavior (such as periodic, semi-persistent, aperiodic).

Scenario 2: Determine the TCI state information of the CSI-RS according to the indicated unified TCI state.

Among them, the uses of CSI-RS can be beam management, TRS, CSI acquisition, etc. One or more CSI-RS resource groups can be configured in a CSI-RS resource set, and each CSI-RS resource group can include one or more CSI-RS resources.

In this way, when the network side device configures CSI-RS to use unified TCI state, it can configure each CSI-RS resource set, or each CSI-RS resource group, or each CSI-RS resource. For example, the correspondence between the first TCI state and the first identification information may be the correspondence between the CSI-RS resource set ID or the CSI-RS resource group ID or the CSI-RS resource ID and the first TCI state.

Among them, if the correspondence between the first TCI state and the first identification information is the correspondence between the CSI-RS resource set ID and the first TCI state, then all CSI-RS resources in a CSI-RS resource set The same TCI status can be used; if the correspondence between the first TCI status and the first identification information is the correspondence between the CSI-RS resource group ID and the first TCI status, then within a CSI-RS resource group All CSI-RS resources can use the same TCI status; if the correspondence between the first TCI status and the first identification information is the correspondence between the CSI-RS resource ID and the first TCI status, then each CSI-RS resources can use different TCI states.

Furthermore, the CSI-RS may be periodic CSI-RS or aperiodic CSI-RS or semi-persistent CSI-RS. Two methods are provided below to determine the target TCI status of CSI-RS:

Method 1: For aperiodic CSI-RS, use a different method from CSI-RS with other time domain behaviors to determine the target TCI state:

For aperiodic CSI-RS, it can be triggered by the first DCI. At this time, the target TCI state of the aperiodic CSI-RS can be determined according to at least one of the following:

As an optional implementation manner, when the first DCI is used to schedule PUSCH, the target indication field indicates the TCI status of the PUSCH scheduled by the first DCI, and the M first TCI statuses include A TCI state corresponding to the same code point as the second TCI state and the second TCI state, where the second TCI state includes the TCI state of the PUSCH scheduled by the first DCI;

Determining the target TCI state of the target signal by the terminal includes corresponding to the second TCI state. The TCI state of the same code point or the second TCI state, wherein the target signal includes at least one of the following:

The CSI-RS resource set that the terminal needs to send is based on the CSI-RS resource set identification information triggered by the first DCI and the first TCI. Correspondence between states, and determination of the TCI state indicated by the target indication field;

CSI-RS in the CSI-RS resource group that the terminal needs to send, wherein the CSI-RS resource group that the terminal needs to send is based on the CSI-RS resource group identification information triggered by the first DCI and the first Correspondence between TCI states, and determination of the TCI state indicated by the target indication field of the first DCI;

CSI-RS in the CSI-RS resources that the terminal needs to send, wherein the CSI-RS resources that the terminal needs to send are based on the combination of the CSI-RS resource identification information triggered by the first DCI and the first TCI state. The corresponding relationship between, and the determination of the TCI status indicated by the target indication field of the first DCI;

All CSI-RS resource sets or CSI-RS resource groups or CSI-RS in CSI-RS resources triggered by the first DCI.

Among them, the second TCI state can include joint TCI state and/or UL TCI state. Since CSI-RS needs to use DL TCI state, the above-mentioned TCI state corresponding to the same code point as the second TCI state can include Joint TCI state or separate UL state. TCI corresponds to separate DL TCI state of the same code point.

For example: Assume that the second field in the first DCI indicates the TCI state used for PUSCH among the M1 joint TCI states, and the indicated TCI state is also used to determine the target TCI state of the CSI-RS; or,

Assume that the second field in the first DCI indicates the UL TCI state for PUSCH among the M3 separate UL TCI states. At this time, since CSI-RS needs to use DL TCI state, after the second field indicates the UL TCI state of PUSCH, the TCI state of PUSCH can be determined. Then, use the DL TCI state corresponding to the same codepoint as the UL TCI state to determine the target TCI state of the CSI-RS; or,

First determine N preset TCIs from the M first TCI states according to instructions from the network side device. state, and then determine the target TCI state of the CSI-RS from N preset TCI states.

It should be noted that the above-described process of determining the target TCI state of the CSI-RS triggered by the first DCI of the scheduled PUSCH is similar to the above-described process of determining the target TCI state of the SRS triggered by the first DCI of the scheduled PDSCH. The difference is that , the identification information of CSI-RS may include CSI-RS resource group identification information, that is, a CSI-RS resource set may include at least one CSI-RS resource group, and a CSI-RS resource group may include at least one CSI-RS resource, The determination process of the target TCI state of the CSI-RS may refer to the determination process of the target TCI state of the SRS in the above embodiment, which will not be described again here.

As an optional implementation manner, when the first DCI is used to schedule PDSCH, the target indication field indicates the TCI status of the PDSCH scheduled by the first DCI, and the M first TCI statuses include The TCI status of the PDSCH scheduled by the first DCI;

For example: the second field in the first DCI indicates the TCI state for PDSCH among the M1/M2 TCI states (it can be one or more), then the TCI state indicated by the second field is also used to determine the Used for at least one of the following:

1e) Determine the CSI-RS to be sent based on the corresponding relationship between CSI-RS resource set/resource group/resource and M1/M2 TCI states or N preset TCI states among them, and based on the TCI state indicated by the second field CSI-RS in resource set/resource group/resource.

2e) Determine the target TCI state of the CSI-RS in all triggered CSI-RS resource sets, and send these CSI-RS. The determination method can be based on the corresponding relationship between the CSI-RS resource set or the CSI-RS resource group/resource in the CSI-RS resource set and the M1/M2 TCI states, or the CSI-RS resource set or the CSI in the CSI-RS resource set. -The corresponding relationship between RS resource group/resource and N preset TCI states.

3e) The number of triggered CSI-RS resource sets, or the number of CSI-RS resource groups in the triggered CSI-RS resource set, or the number of CSI-RS resources in the triggered CSI-RS resource set, or the triggered CSI -The sum of the number of CSI-RS resource groups in the RS resource set and the number of CSI-RS resources that do not belong to any CSI-RS resource group is equal to the TCI state indicated by the second field. At this time, the number indicated by the second field TCI state corresponds one-to-one with CSI-RS resource set or CSI-RS resource group or CSI-RS resource, or the TCI state indicated by the second field corresponds to the CSI-RS resource of the CSI-RS resource group and does not belong to any CSI-RS The CSI-RS resources of the resource group correspond one to one, so that each CSI-RS uses the corresponding TCI state indicated by the second field.

4e) The TCI state of the CSI-RS resource in the CSI-RS resource set corresponds to the TCI state indicated by the second field.

For example: the second field instructs PDSCH to use 1 TCI state among M1/M2 TCI states. The CSI-RS resource in the triggered CSI-RS resource set also uses this TCI state. Typically, the network is only configured with 1 TCI state at this time. CSI-RS resource set.

Another example: the network instructs PDSCH to use 1 TCI state out of M1/M2 TCI states, and the network is pre-configured or the protocol agrees that CSI-RS resource set/resource group/resource has a corresponding relationship with M1/M2 TCI states, then only send The CSI-RS resource set/resource in the triggered CSI-RS resource set corresponding to the TCI state indicated by the second field CSI-RS in group/resource.

Another example: the second field instructs PDSCH to use K TCI states among M1/M2 TCI states, triggering 1 CSI-RS resource set. The CSI-RS resource set includes K1 CSI-RS resource groups, or includes K2 CSI-RS resources, or including K1 CSI-RS resource groups and K3 CSI-RS resources that do not belong to any K1 CSI-RS resource groups, then when K ≥ K1, K TCI states are used as CSI-RS resources respectively. The TCI states of K1 CSI-RS resource groups in the RS resource set; when K≥K2, the K TCI states are used as the TCI states of K2 CSI-RS resources respectively; when K≥K1+K3, the K TCI states are respectively Used as the TCI state of the CSI-RS resource in the K1 CSI-RS resource group and the K3 CSI-RS resource.

Another example: the second field instructs PDSCH to use K>1 TCI state among M1/M2 TCI states, triggering K CSI-RS resource sets, and K TCI states are used as CSI-RS in each CSI-RS resource set. TCI state of RS resource.

It should be noted that the above-mentioned determination process of the target TCI state of the CSI-RS triggered by the first DCI of the scheduled PDSCH can be similar to the above-mentioned determination process of the target TCI state of the SRS triggered by the first DCI of the scheduled PUSCH, and will not be used here. Again.

As an optional implementation manner, in the case where the target signal includes CSI-RS and the periodic behavior of the CSI-RS is aperiodic, the terminal determines from the M first TCIs according to the target information The target TCI status of the target channel and/or target signal is determined in the status, including:

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then the terminal The corresponding relationship between the K CSI-RS resource sets and the K first TCI states determines the TCI state of each CSI-RS resource set in the K CSI-RS resource sets, wherein the target The TCI state includes the K first TCI states, K is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then the terminal The corresponding relationship between the K CSI-RS resource sets and the X first TCI states determines the TCI state of each CSI-RS resource group in the K CSI-RS resource sets, wherein the target The TCI state includes the X first TCI states, where X represents the K CSI-RS The total number of CSI-RS resource groups included in the resource set, X is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates H first TCI states, then the terminal The corresponding relationship between the K CSI-RS resource sets and the H first TCI states determines the TCI state of each CSI-RS resource in the K CSI-RS resource sets, wherein the target TCI The status includes the H first TCI status, where H represents the total number of CSI-RS resources in the CSI-RS resource group included in the K CSI-RS resource set, and H is a positive integer.

For example: the first DCI triggers aperiodic CSI-RS, but does not schedule PUSCH or PDSCH. Assume that the M first TCI states include M1 = 4 joint TCI states, or the M first TCI states include M2 = 4 DLs. TCI state, the target TCI state for each CSI-RS resource can be determined among the M1/M2 TCI states according to the instructions of the second field of the first DCI:

Only K=1 CSI-RS resource set is triggered (there are K1 CSI-RS resource groups including a total of K2 CSI-RS resources, and there are also K3 CSI-RS resources that do not belong to any CSI-RS resource group, K1 >=0, K3>=0), the second field indicates the TCI state (indicated from M1/M2, or from the N preset TCI states in M1/M2), which are used as K CSI- TCI state of RS resource set (the CSI-RS resource in each CSI-RS resource set corresponds to a TCI state), or used as the TCI state of K1 CSI-RS resource groups respectively (that is, in each CSI-RS resource group The CSI-RS resource corresponds to a TCI state), or used as the TCI state of K3 CSI-RS resources, or used as the CSI-RS resource and K3 CSI-RS resources in the K1 CSI-RS resource group. TCI state.

Among them, the correspondence between K1 CSI-RS resource group and/or K3 CSI-RS resource and TCI state can be indicated through network signaling; or the correspondence does not require network signaling instructions, but is based on CSI-RS resource group ID and/or CSI-RS resource ID correspond to the ordering of TCI states. For example, the minimum CSI-RS resource group ID/resource ID corresponds to the top TCI state, where the ordering of TCI states refers to the order of DL TCI states. .

It should be noted that the above-mentioned first DCI does not schedule PUSCH/PDSCH, and the determination process of the target TCI state of the CSI-RS triggered by the first DCI is different from the target TCI state of the SRS triggered by the above-mentioned first DCI that does not schedule PUSCH/PDSCH. The determination process is similar, except that CSI-RS The identification information may include CSI-RS resource group identification information, that is, a CSI-RS resource set may include at least one CSI-RS resource group, and a CSI-RS resource group may include at least one CSI-RS resource. At this time, a All CSI-RS resources in a CSI-RS resource set can use the same TCI state, or CSI-RS resources in different CSI-RS resource groups in a CSI-RS resource set can use different TCI states, or, Each different CSI-RS resource can use different TCI states, which will not be described again here.

Method 2: The following embodiment also proposes an implementation method that can use the same method to determine the TCI state used by each CSI-RS for CSI-RS with any time domain behavior (such as periodic, semi-persistent, and aperiodic). :

1f) The network uses second signaling (such as RRC signaling or MAC CE command or DCI signaling) to instruct each CSI-RS resource set/resource group/resource to use one or more TCI states of N preset TCI states. Among them, N preset TCI states are determined from M1/M2/M3 unified TCI states according to network instructions or protocol agreements.

2f) Determine the target TCI state of CSI-RS based on the corresponding relationship between the unified TCI state (joint or DL TCI state) indicated by the network and the CSI-RS resource set/resource group/resource

For example: According to the order of unified TCI state (joint or DL TCI state) indicated by the network in its corresponding codepoint (or the order of codepoints corresponding to each unified TCI state) and CSI-RS resource set/resource group/resource The IDs are sorted from small to large, performing one-to-one correspondence, one-to-many correspondence, and many-to-one correspondence. Among them, if a CSI-RS resource set corresponds to multiple TCI states, the CSI-RS resource group/resource in the CSI-RS resource set also has a corresponding relationship with the multiple TCI states, which can be CSI-RS resource group ID/ The resource ID is arranged in ascending order from small to large and the multiple TCI states (or codepoints corresponding to multiple TCI states).

For example: when a CSI-RS resource set includes K CSI-RS resource groups or CSI-RS resources, if m (m=M1/M2, and m≥1) DL unified TCI states are indicated, then the K The correspondence between CSI-RS resource group or CSI-RS resource and DL unified TCI state includes one of the following:

K=m, one-to-one correspondence or configuration correspondence in sequence;

K>m, the first m of K CSI-RS resource groups or CSI-RS resources correspond to m DL unified TCI states one-to-one, or the network configuration indicates m CSI-RS resources m DL unified TCI to be used by group or CSI-RS resource. Other CSI-RS resource groups or CSI-RS resources are not transmitted.

K<m, K CSI-RS resource groups or CSI-RS resources correspond to K DL TCI states one-to-one. These K DL TCI states are determined according to the instructions of the network side device or protocol agreement, or the default is m The top K DL TCI states.

It should be noted that in scenario one, when M is equal to 1, the terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states. The implementation is also applicable to CSI-RS.

For example: when the network indicates M1/M2/M3=1 (i.e. M=1) unified TCI states, the CSI-RS and its target TCI state can be determined according to the following method:

1g) Update the default TCI state in the TCI state currently used by the CSI-RS. The default TCI state can be a certain TCI state among the TCI states currently used by the CSI-RS as indicated by the network, or by agreement or default The preset TCI state is fixed to a certain TCI state among the TCI states currently used by CSI-RS (such as the first TCI state), and the unupdated TCI state remains unchanged. Among them, CSI-RS is the same as the above preset TCI state. Assume that TCI state corresponds (such as the network side device indicates the corresponding relationship, or the protocol stipulates the corresponding relationship);

2g) Will switch to single beam or single TRP transmission mode:

2g-1) Determine the CSI-RS resource set/resource group/resource to be transmitted based on the TCI state. The CSI-RS resource set/resource group/resource associated with the TCI state or the TRP corresponding to the TCI state uses the TCI state. The remaining CSI-RS resource set/resource group/resource stops sending. Or the network side device only indicates the CSI-RS resource set/resource group/resource associated with the TCI state or the TRP corresponding to the TCI state sent to the terminal. At this time, the target channel/target signal includes the CSI-RS resource set/resource group/resource corresponding to the TCI state, or the target channel/target signal includes the CSI-RS resource set/resource associated with the TRP corresponding to the TCI state. group/resource.

2g-2) All CSI-RS resource set/resource group/resource use this TCI state, that is, the target channel/target signal includes all CSI-RS resource set/resource group/resource.

In this implementation, for CSI-RS with any time domain behavior (such as periodic, semi-persistent, aperiodic), the target TCI state can be determined in the same manner as SRS.

Scenario 3: Determine the target TCI state of the PDCCH according to the indicated unified TCI state.

As an optional implementation manner, when the target channel includes a PDCCH, the terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states based on the target information, include:

The terminal determines a target TCI state of a preset CORESET or a preset CORESET group or a preset search space set corresponding to the PDCCH from the M first TCI states according to the target information;

The original TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the second identifier, and the target TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the third Three identifiers. When the second identifier and the third identifier are used to identify the target resource, the method further includes:

The terminal switches the preset CORESET or the preset CORESET group or the preset search space set to be associated with the third identification; or,

The terminal switches the preset CORESET or the preset CORESET group or the preset search space set to the target resource transmission associated with the third identification; or,

The terminal switches from the target resource associated with the second identification to the target resource associated with the third identification.

Optionally, the target resource includes at least one of the following:

Cell identity, physical cell identity (Physical Cell Identifier, PCI), bandwidth part (Bandwidth Part, BWP) identity, sending and receiving point TRP identity, public TCI status pool identity, public TCI status type value, CORESET group identity, CORESET identity, channel Group ID, CORESET pool ID, search space set ID, search space ID, synchronization signal block SSB ID, SSB group ID.

In a possible implementation, N preset TCI states can be selected from M1/M2 TCI states according to network instructions or protocol agreements, and then CORESET or CORESET or CORESET can be determined from N preset TCI states according to network instructions or protocol agreements. The target TCI state of the CORESET group or search space set. In this way, according to the corresponding relationship between CORESET/CORESET group/search space set and TCI state, the TCI state used by the PDCCH of each CORESET or each CORESET group or each preset search space set can be determined.

For example: In the CJT scenario, the network indicates 4 unified TCI states (joint unified TCI state or DL unified TCI state), and determines the first 2 as the default TCI state. At this time, the network side device can indicate these 2 One or two of the TCI states serve as the TCI state of CORESET; or indicate that the two TCI states correspond to two CORESET groups respectively.

In another possible implementation, for CORESET or CORESET group or search space set configured in multi-beam simultaneous transmission mode (such as SFN) (a total of P TCI states are required, P is a positive integer), when M1/M2 is greater than When P, always use P preset TCI states (such as the previous P ones) as the target TCI state.

In another possible implementation, when the third identifier associated with the target TCI state of the preset CORESET or CORESET group or search space set is the third identifier associated with the original TCI state of the preset CORESET or CORESET group or search space set. When the two identifiers are different, the following adjustments can be made:

1h) Switch the default CORESET or CORESET group or search space set to be associated with the third identifier;

2h) Switch the default CORESET or CORESET group or search space set to the cell or TRP transmission associated with the third identifier;

3h) Perform cell or TRP switching. For example, if the beam corresponding to the second identifier is located in the first PCI and the beam corresponding to the third identifier is located in the second PCI, then the current cell (or serving cell) is switched to the second PCI.

For example: Suppose a CORESET originally had TCI state1, and the network instructed it to be updated to TCI state2, and TCI state1 is associated with PCI1, and TCI state2 is associated with PCI2, then you can: update the CORESET from the current configuration on PCI1 to the configuration on PCI2, or , switch the PDCCH on CORESET from PCI1 to PCI2 or switch the PDCCH on CORESET from TRP1 corresponding to PCI1 to TRP2 corresponding to PCI2 for transmission, or perform cell handover from PCI1 to PCI2.

Scenario 4: Determine the target TCI state of PDSCH according to the indicated unified TCI state.

In the case where the target channel includes the PDSCH scheduled by the first DCI, the target indication field (such as the third field) of the first DCI indicates the first TCI status for the PDSCH and/or, The target indication field of the first DCI indicates the corresponding relationship between at least two pieces of identification information of the PDSCH and at least two first TCI states.

Wherein, the first TCI state indicated by the target indication field (ie, the third field) of the first DCI may be any TCI state among the M first TCI states. For example: for PDSCH, the third field in the first DCI can indicate the TCI state used for PDSCH among the M1/M2 TCI states. For example, the network indicates a total of 4 first TCI states, and the third field indicates that the first TCI state is used for PDSCH, or the network indicates a total of 4 first TCI states, and the third field indicates the first TCI state. One and third first TCI states are used for PDSCH.

Of course, in implementation, N preset TCI states can also be determined first from M first TCI states, and then the target indication field of the first DCI is used to indicate any TCI state among the N preset TCI states. For example: Select N preset TCI states from M1/M2 TCI states according to network instructions or protocol agreements, and then use the third field in the first DCI to indicate the PDSCH among the N preset TCI states. Target TCI state.

In addition, while indicating at least two first TCI states for the PDSCH, the third field may also indicate a correspondence between at least two identification information of the PDSCH and the at least two first TCI states to clarify each of the PDSCH. Correspondence between identification information and the first TCI state.

For example: the third field in the first DCI can also indicate the order of TCI state used for PDSCH. Among them, this sequence can be used to determine multiple DMRS groups, DMRS ports, frequency domain resources, and TCI states of multiple layers of PDSCH.

As an optional implementation manner, the corresponding relationship between at least two pieces of identification information of the PDSCH and at least two first TCI states includes at least one of the following:

The corresponding relationship between the first TCI status and the fourth information of the PDSCH, where the fourth information includes: at least one of DMRS group, DMRS port, frequency domain resource and layer;

The corresponding relationship between the arrangement order of the first TCI state and the first arrangement order, the first arrangement order includes at least one of the following:

The arrangement order of the DMRS groups of the PDSCH;

The parity order of the DMRS groups of the PDSCH;

The arrangement order of the DMRS ports of the PDSCH;

The parity sequence of the DMRS ports of the PDSCH;

The arrangement order of the frequency domain resources of the PDSCH;

The parity order of the frequency domain resources of the PDSCH;

The arrangement order of the PDSCH layers;

The parity order of the PDSCH layers.

Among them, the corresponding relationship between the order of the above TCI state and the multiple DMRS groups, DMRS ports, frequency domain resources, and multiple layers of the PDSCH may be indicated by the network side device, or may be pre-agreed in the protocol.

In this implementation, the arrangement order of TCI state corresponds to the order of the fourth information of PDSCH, and the order of arrangement of TCI state corresponds to the order of the fourth information of PDSCH (such as DMRS group ID or frequency domain resources from low to high, DMRS group ID or frequency domain resource (PRB) or layer order from odd to even, layer order from low to high, etc.) corresponds, for example: the TCI state ranked first corresponds to the DMRS group ID with the smallest value.

Scenario 5: Determine the target TCI state of PUSCH based on the indicated unified TCI state.

In the case where the target channel includes the PUSCH scheduled by the first DCI, the target indication field of the first DCI indicates the first TCI status for the PUSCH and/or the target indication of the first DCI The field indicates the corresponding relationship between at least two pieces of identification information of the PUSCH and at least two first TCI states.

Optionally, the corresponding relationship between at least two pieces of identification information of the PUSCH and at least two first TCI states includes at least one of the following:

The corresponding relationship between the first TCI status and the fourth information of the PUSCH, the fourth information including: at least one of DMRS group, DMRS port, frequency domain resource and layer;

The arrangement order of the DMRS groups of the PUSCH;

The parity order of the DMRS groups of the PUSCH;

The arrangement order of the DMRS ports of the PUSCH;

The parity sequence of the DMRS ports of the PUSCH;

The arrangement order of the frequency domain resources of the PUSCH;

The parity order of the frequency domain resources of the PUSCH;

The arrangement order of the PUSCH layers;

The parity order of the PUSCH layers.

The specific process of determining the target TCI state of PUSCH based on the indicated unified TCI state can be referred to Scenario 4. The specific process of determining the target TCI state of PDSCH based on the indicated unified TCI state will not be described again here.

In addition, when the downlink transmission mode of CJT is configured, and M1 (M1>2) joint TCI states or M2 (M2>2) separate DL TCI states are indicated, the uplink transmission (can also include SRS resource set, PUCCH resource , PUSCH) using 1 or 2 TCI states among the M1 joint TCI states, or using 1 or 2 UL TCI states among the separate UL TCI states corresponding to the M2 separate DL TCI states. For example: you can use 1 or 2 TCI states indicated by the network configuration, or use the first 1 or 2 of the M1 joint TCI states, or use the first 1 of the separate UL TCI states corresponding to the M2 separate DL TCI states. or 2. For details, please refer to the determination process of the TCI state used by the PDCCH in Scenario 3, which will not be described again here.

Please refer to Figure 3. Another TCI status determination method provided by an embodiment of the present application. The biggest difference between this method and the method embodiment shown in Figure 2 is that the execution subject of the method embodiment shown in Figure 2 is a terminal, and The execution subject of the method embodiment shown in Figure 3 is a network-side device, and the various steps performed by the network-side device are the same or corresponding to the various steps performed by the terminal in the method embodiment shown in Figure 2. Therefore, as shown in Figure 3 For various explanations and descriptions in the method embodiment shown, please refer to the corresponding explanations in the method embodiment shown in Figure 2, and will not be repeated here.

As shown in Figure 3, the TCI status determination method that can be applied to network-side devices may include the following steps:

Step 301: The network side device indicates common beam information to the terminal, where the common beam information includes M first TCI states, and M is a positive integer.

Step 302: The network side device determines the target channel and/or the target TCI state of the target signal from the M first TCI states; wherein the target channel includes: physical uplink control channel PUCCH, physical downlink control channel At least one of PDCCH, physical downlink shared channel PDSCH and physical uplink shared channel PUSCH; or, the target signal includes: at least one of sounding reference signal SRS and channel state information reference signal CSI-RS.

As an optional implementation manner, the network side device determines the target TCI state of the target channel or target signal from the M first TCI states, including:

The network side device determines the target channel and/or the target TCI state of the target signal from the M first TCI states according to target information, wherein the target information includes at least one of the following:

The number of the first TCI states;

Correspondence between the first TCI state and first identification information, the first identification information being used to identify at least one of the target channel and/or the target signal;

The number of first identification information corresponding to the target channel and/or target signal;

The value of the first identification information corresponding to the target channel and/or target signal;

The arrangement order or position of the M first TCI states;

The arrangement order of the first identification information corresponding to the target channel and/or target signal;

The type of target channel and/or target signal;

The target channel and/or the transmission mode of the target signal;

The time domain behavior of the target channel and/or target signal;

First information or second information, the first information indicates that the first downlink control information DCI schedules PUSCH or PDSCH, the second information indicates that the first DCI does not schedule PUSCH or PDSCH, and the first DCI is used to trigger The target signal or scheduling the target channel;

The target indication field of the first DCI, the target indication field is used to indicate at least one of the M first TCI states;

N preset TCI states, the common beam information includes the N preset TCI states, N is a positive integer less than or equal to M;

Correspondence between the N preset TCI states and the first identification information.

As an optional implementation, the first identification information includes at least one of the following:

SRS resource set identification information;

SRS resource identification information;

Channel state information reference signal CSI-RS resource set identification information;

CSI-RS resource group identification information;

CSI-RS resource identification information;

Control resource set CORESET group identification information;

CORESET identification information;

Search space set identification information;

Demodulation reference signal DMRS group identification information of the target channel;

DMRS port identification information of the target channel;

The frequency domain resource identification information of the target channel;

The layer identification information of the target channel.

As an optional implementation manner, the corresponding relationship between the first TCI state and the first identification information includes at least one of the following:

As an optional implementation manner, when the transmission mode of the target channel and/or the target signal is the coherent joint transmission CJT mode, M is an integer greater than 2.

As an optional implementation, the TCI determination method further includes:

The network side device determines the N preset TCI states from the M first TCI states according to third information, wherein the third information is indicated by the network side device or agreed by the protocol;

The network side device determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The network side device determines the target TCI state of the target channel and/or the target signal from the N preset TCI states according to the target information.

The network side device determines that the target TCI state of the target signal includes the TCI state indicated by the target indication field, and the target signal includes at least one of the following:

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.

The network side device determines that the target TCI state of the target signal includes a TCI state corresponding to the same code point as the second TCI state or the second TCI state, and the target signal includes at least one of the following:

CSI-RS in the CSI-RS resource group that the terminal needs to send, wherein the CSI-RS resource group that the terminal needs to send is based on the CSI-RS resource group identification information triggered by the first DCI and the first The corresponding relationship between the TCI status and the target indication field of the first DCI indicates TCI status determined;

The CSI-RS in the CSI-RS resources that the terminal needs to send is based on the CSI-RS resource identification information triggered by the first DCI and the first TCI state. The corresponding relationship between, and the determination of the TCI status indicated by the target indication field of the first DCI;

As an optional implementation manner, when the first DCI is used to schedule PDSCH, The target indication field indicates the TCI state of the PDSCH scheduled by the first DCI. The M first TCI states include a TCI state corresponding to the same code point as the third TCI state and the third TCI state. The third TCI state The three TCI states include the TCI state of the PDSCH scheduled by the first DCI;

The network side device determines that the target TCI state of the target signal includes a TCI state corresponding to the same code point as the third TCI state or the third TCI state, and the target signal includes at least one of the following:

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.

When m is equal to K, the network side device determines that the target TCI state of the target channel and/or target signal includes the m first TCI states; and/or,

In the case where m is greater than K, the network side device determines the K that is in the m first TCI states and is located at a preset position or indicated by the first indication information sent by the network side device to the terminal. TCI state, determined as the target TCI state of the target channel and/or target signal; and/or,

When m is less than K, the network side device determines the m first TCI states as the TCI states of the target channels and/or target signals corresponding to the m first identification information, and the m first The identification information is the m pieces of first identification information among the K pieces of first identification information and is arranged in a preset position or indicated by the second indication information sent by the network side device to the terminal; and/ or,

The network side device determines that the target TCI state includes the m first TCI states and the original (K-m) TCI states of the target channel and/or target signal.

As an optional implementation manner, when the target signal includes SRS, and the periodic behavior of the SRS is aperiodic, the network side device selects from the M first TCI states according to the target information. Determine the target TCI status of the target channel and/or target signal, including:

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then the network side device The corresponding relationship between the K SRS resource sets and the K first TCI states determines the TCI state of each SRS resource set in the K SRS resource sets, wherein the target TCI state includes the K The first TCI state, K is a positive integer; and/or,

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then the network side device The corresponding relationship between the K SRS resource sets and the X first TCI states determines the TCI state of each SRS resource in the K SRS resource sets, wherein the target channel and/or target signal includes For the K SRS resource sets, the target TCI state includes the X first TCI states, where X represents the total number of SRS resources included in the K SRS resource sets, and X is a positive integer.

As an optional implementation manner, when the target signal includes CSI-RS and the periodic behavior of the CSI-RS is aperiodic, the network side device selects the M-th signal from the target signal based on the target information. Determine the target TCI state of the target channel and/or target signal in a TCI state, including:

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then the network side device According to the corresponding relationship between the K CSI-RS resource sets and the K first TCI states, the TCI state of each CSI-RS resource set in the K CSI-RS resource sets is determined, wherein, The target TCI state includes the K first TCI states, K is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then the network side device According to the relationship between the K CSI-RS resource sets and the X first TCI states Correspondingly, determine the TCI status of each CSI-RS resource group in the K CSI-RS resource set, wherein the target TCI status includes the X first TCI status, where X represents the K The total number of CSI-RS resource groups included in the CSI-RS resource set, X is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates H first TCI states, then the network side device According to the corresponding relationship between the K CSI-RS resource sets and the H first TCI states, the TCI state of each CSI-RS resource in the K CSI-RS resource sets is determined, wherein, The target TCI state includes the H first TCI states, where H represents the total number of CSI-RS resources in the CSI-RS resource group included in the K CSI-RS resource sets, and H is a positive integer.

As an optional implementation manner, when the target channel includes a PDCCH, the network side device determines the target TCI of the target channel and/or the target signal from the M first TCI states according to the target information. status, including:

The network side device determines the target TCI state of the preset CORESET or the preset CORESET group or the preset search space set corresponding to the PDCCH from the M first TCI states according to the target information;

The network side device switches the preset CORESET or the preset CORESET group or the preset search space set to be associated with the third identification; or,

The network side device switches the preset CORESET or the preset CORESET group or the preset search space set to the target resource transmission associated with the third identifier; or,

The network side device determines that the terminal switches from the target resource associated with the second identity to the target resource associated with the third identity.

As an optional implementation, the target resource includes at least one of the following:

Cell identification, physical cell identification, bandwidth part BWP identification, sending and receiving point TRP identification, public TCI status pool identification, public TCI status type value, CORESET group identification, CORESET Identification, channel group identification, CORESET pool identification, search space set identification, search space ID, synchronization signal block SSB ID, SSB group ID.

As an optional implementation manner, when the target channel includes the PDSCH or PUSCH scheduled by the first DCI, the target indication field of the first DCI indicates the first TCI used for the PDSCH or PUSCH. status and/or, the target indication field of the first DCI indicates the corresponding relationship between at least two pieces of identification information of the PDSCH or PUSCH and at least two first TCI statuses.

As an optional implementation manner, the corresponding relationship between at least two pieces of identification information of the PDSCH or PUSCH and at least two first TCI states includes at least one of the following:

The corresponding relationship between the first TCI state and the fourth information of the PDSCH or PUSCH, where the fourth information includes: at least one of DMRS group, DMRS port, frequency domain resource and layer;

The arrangement order of the DMRS groups of the PDSCH or PUSCH;

The parity order of the DMRS groups of the PDSCH or PUSCH;

The arrangement order of the DMRS ports of the PDSCH or PUSCH;

The parity sequence of the DMRS ports of the PDSCH or PUSCH;

The arrangement order of the frequency domain resources of the PDSCH or PUSCH;

The parity order of the frequency domain resources of the PDSCH or PUSCH;

The arrangement order of the PDSCH or PUSCH layers;

The parity order of the PDSCH or PUSCH layers.

As an optional implementation manner, when M is equal to 1, the network side device determines the target TCI state of the target channel and/or the target signal from the M first TCI states, including:

The network side device updates the first preset TCI state among the original TCI states of the target channel and/or target signal according to the first TCI state, and obtains the target of the target channel and/or target signal. TCI state, the first preset TCI state is one of the original TCI states of the target channel and/or the target signal; or,

The network side device determines that the target channel and/or the target signal performs single beam or single TRP transmission based on the 1 first TCI state; or,

The network side device determines that the target channel and/or the target signal share the one first TCI state.

As an optional implementation manner, the network side device determines that the target channel and/or target signal is transmitted in a single beam or a single TRP based on the 1 first TCI state, including:

The network side device determines that the target channel and/or target signal that the terminal needs to transmit includes the target channel and/or target signal associated with the first TCI state; or,

The network side device determines that the target channel and/or target signal that the terminal needs to transmit includes the target channel and/or target signal associated with the target resource corresponding to the first TCI state;

Wherein, the target resources include at least one of the following:

Cell identity, physical cell identity, bandwidth part BWP identity, sending and receiving point TRP identity, public TCI status pool identity, public TCI state type value, CORESET group identity, CORESET identity, channel group identity, CORESET pool identity, search space set identity, Search space ID, synchronization signal block SSB ID, SSB group ID.

As an optional implementation manner, the M first TCI states include at least one of the following: M1 joint TCI states, M2 independent downlink DL TCI states, and M3 independent uplink UL TCI states.

In the embodiment of this application, a unified TCI framework solution that can be applied in mTRP scenarios is proposed, which can determine the target channel or target in various transmission modes according to the unified TCI state (i.e., the first TCI state) indicated by the network side device. The beam information of the signal ensures a consistent understanding of the beam used between the network side device and the terminal.

For the TCI status determination method provided by the embodiment of the present application, the execution subject may be a TCI status determination device. In the embodiment of the present application, the TCI state determination method performed by the TCI state determination apparatus is used as an example to illustrate the TCI state determination apparatus provided by the embodiment of the present application.

In one implementation, if the TCI status determination device is applied to a terminal, as shown in Figure 4, the TCI status determination device 400 may include the following modules:

The acquisition module 401 is used to acquire the common beam information indicated by the network side device, where the common beam information includes M first TCI states, and M is a positive integer;

The first determination module 402 is configured to determine the target TCI state of the target channel and/or the target signal from the M first TCI states;

Optionally, the first determination module 402 is specifically used for:

According to the target information, the target TCI state of the target channel and/or the target signal is determined from the M first TCI states, wherein the target information includes at least one of the following:

The number of the first TCI states;

The arrangement order or position of the M first TCI states;

The type of target channel and/or target signal;

The target channel and/or the transmission mode of the target signal;

The time domain behavior of the target channel and/or target signal;

Optionally, the first identification information includes at least one of the following:

SRS resource set identification information;

SRS resource identification information;

CSI-RS resource group identification information;

CSI-RS resource identification information;

Control resource set CORESET group identification information;

CORESET identification information;

Search space set identification information;

DMRS port identification information of the target channel;

The frequency domain resource identification information of the target channel;

The layer identification information of the target channel.

Optionally, when the transmission mode of the target channel and/or the target signal is the coherent joint transmission CJT mode, M is an integer greater than 2.

Optionally, the TCI status determination device 400 also includes:

A third determination module, configured to determine the N preset TCI states from the M first TCI states according to third information, where the third information is indicated by the network side device or agreed by the protocol;

The first determination module 402 is specifically used for:

According to the target information, the target TCI state of the target channel and/or the target signal is determined from the N preset TCI states.

Optionally, when the first DCI is used to schedule PUSCH, the target indication field indicates the TCI status of the PUSCH scheduled by the first DCI, and the M first TCI statuses include the first DCI TCI status of scheduled PUSCH;

The first determination module 402 is specifically used for:

Determining the target TCI state of the target signal includes the TCI state indicated by the target indication field, The target signal includes at least one of the following:

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.

Optionally, when the first DCI is used to schedule PUSCH, the target indication field indicates the TCI status of the PUSCH scheduled by the first DCI, and the M first TCI statuses include the same as the second TCI status. Corresponding to the TCI state of the same code point and the second TCI state, the second TCI state includes the TCI state of the PUSCH scheduled by the first DCI;

The first determination module 402 is specifically used to:

Determining the target TCI state of the target signal includes a TCI state corresponding to the same code point as the second TCI state or the second TCI state, wherein the target target signal includes at least one of the following:

Optionally, when the first DCI is used to schedule PDSCH, the target indication field indicates the TCI status of the PDSCH scheduled by the first DCI, and the M first TCI statuses include the first DCI TCI status of scheduled PDSCH;

The first determination module 402 is specifically used to:

Determining the target TCI state of the target signal includes the TCI state indicated by the target indication field, and the target signal includes at least one of the following:

Optionally, when the first DCI is used to schedule PDSCH, the target indication field indicates the TCI state of the PDSCH scheduled by the first DCI, and the M first TCI states include the same as the third TCI state. Corresponding to the TCI state of the same code point and the third TCI state, the third TCI state includes the TCI state of the PDSCH scheduled by the first DCI;

The first determination module 402 is specifically used to:

Determining the target TCI state of the target signal includes a TCI state corresponding to the same code point as the third TCI state or the third TCI state, and the target signal includes at least one of the following:

The SRS resource set that the terminal needs to send is based on the SRS resource set identification information triggered by the first DCI and the first TCI. Correspondence between states, and determination of the TCI state indicated by the target indication field;

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.

Optionally, m is the number of first TCI states suitable for the target channel and/or target signal included in the M first TCI states or the N preset TCI states, and K is the target channel. and/or the number of first identification information corresponding to the target signal;

The first determination module 402 is specifically used to:

In the case where m is equal to K, it is determined that the target TCI state of the target channel and/or target signal includes the m first TCI states; and/or,

In the case where m is greater than K, the K TCI states among the m first TCI states and located at preset positions or indicated by the first indication information from the network side device are determined as the target channel and /or the target TCI status of the target signal; and/or,

When m is less than K, the m first TCI states are determined as the TCI states of the target channels and/or target signals corresponding to the m pieces of first identification information, and the m first identification information is the m pieces of first identification information among the K pieces of first identification information and arranged in a preset position or indicated by the second indication information from the network side device; and/or,

Determining the target TCI state includes the m first TCI states and the original (K-m) TCI states of the target channel and/or target signal.

Optionally, when the target signal includes SRS and the periodic behavior of the SRS is aperiodic, the first determination module 402 is specifically configured to:

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then according to the K SRS resources The corresponding relationship between the set and the K first TCI states is to determine the TCI state of each SRS resource set in the K SRS resource sets, wherein the target TCI state includes the K first TCI states. , K is a positive integer; and/or,

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then according to the The corresponding relationship between the K SRS resource sets and the X first TCI states determines the TCI state of each SRS resource in the K SRS resource sets, wherein the target channel and/or target signal includes For the K SRS resource sets, the target TCI state includes the X first TCI states, where X represents the total number of SRS resources included in the K SRS resource sets, and X is a positive integer.

Optionally, when the target signal includes CSI-RS and the periodic behavior of the CSI-RS is aperiodic, the first determination module 402 is specifically configured to:

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then according to the K The corresponding relationship between the CSI-RS resource set and the K first TCI states determines the TCI state of each CSI-RS resource set in the K CSI-RS resource set, wherein the target TCI state includes The K first TCI states, K is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then according to the K The corresponding relationship between the CSI-RS resource set and the X first TCI states determines the TCI state of each CSI-RS resource group in the K CSI-RS resource set, where the target TCI state includes The X first TCI states, where X represents the total number of CSI-RS resource groups included in the K CSI-RS resource sets, and X is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates H first TCI states, then according to the K The corresponding relationship between the CSI-RS resource set and the H first TCI states determines the TCI state of each CSI-RS resource in the K CSI-RS resource set, wherein the target TCI state includes all The H first TCI states, where H represents the total number of CSI-RS resources in the CSI-RS resource group included in the K CSI-RS resource sets, and H is a positive integer.

Optionally, when the target channel includes PDCCH, the first determination module 402 is specifically configured to:

According to the target information, determine the target TCI state of the preset CORESET or the preset CORESET group or the preset search space set corresponding to the PDCCH from the M first TCI states;

The original TCI in the default CORESET or default CORESET group or default search space set The state is associated with a second identifier, and the target TCI state of the preset CORESET or the preset CORESET group or the preset search space set is associated with a third identifier, and the second identifier and the third identifier are used to identify the situation of the target resource. Next, the TCI status determining device 400 also includes:

A first association module, configured to switch the preset CORESET or preset CORESET group or preset search space set to be associated with the third identification; or,

A first switching module configured to switch the preset CORESET or preset CORESET group or preset search space set to target resource transmission associated with the third identification; or,

A second switching module, configured to switch from the target resource associated with the second identification to the target resource associated with the third identification.

Optionally, the target resource includes at least one of the following:

Optionally, in the case where the target channel includes the PDSCH or PUSCH scheduled by the first DCI, the target indication field of the first DCI indicates the first TCI status for the PDSCH or PUSCH and/or, The target indication field of the first DCI indicates a correspondence between at least two pieces of identification information of the PDSCH or PUSCH and at least two first TCI states.

Optionally, the corresponding relationship between at least two pieces of identification information of the PDSCH or PUSCH and at least two first TCI states includes at least one of the following:

The corresponding relationship between the first TCI state and the fourth information of the PDSCH or PUSCH, the fourth information includes: at least one of DMRS group, DMRS port, frequency domain resource and layer;

The arrangement order of the DMRS groups of the PDSCH or PUSCH;

The parity order of the DMRS groups of the PDSCH or PUSCH;

The arrangement order of the DMRS ports of the PDSCH or PUSCH;

The parity sequence of the DMRS ports of the PDSCH or PUSCH;

The arrangement order of the frequency domain resources of the PDSCH or PUSCH;

The parity order of the frequency domain resources of the PDSCH or PUSCH;

The arrangement order of the PDSCH or PUSCH layers;

The parity order of the PDSCH or PUSCH layers.

Optionally, when M is equal to 1, the first determination module 402 is specifically used to:

Update the first preset TCI state among the original TCI states of the target channel and/or target signal according to the first TCI state to obtain the target TCI state of the target channel and/or target signal, The first preset TCI state is one of the original TCI states of the target channel and/or the target signal; or,

Determine that the target channel or target signal performs single beam or single TRP transmission based on the 1 first TCI state; or,

It is determined that the target channel and/or the target signal share the 1 first TCI state.

Optionally, the first determination module 402 includes:

A first determination unit configured to determine that the target channel and/or target signal that needs to be transmitted includes the target channel and/or target signal associated with the first TCI state; or,

a second determination unit, configured to determine that the target channel and/or target signal that needs to be transmitted includes the target channel and/or target signal associated with the target resource corresponding to the first TCI state;

Wherein, the target resources include at least one of the following:

Optionally, the M first TCI states include at least one of the following: M1 joint TCI states, M2 independent downlink DL TCI states, and M3 independent uplink UL TCI states.

The TCI status determining device 400 in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal. For example, terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

The TCI status determination device 400 provided in this embodiment can implement each process in the method embodiment shown in Figure 2 and can achieve the same beneficial effects. To avoid duplication, the details will not be described again.

In another implementation, if the TCI status determination device is applied to network side equipment, as shown in Figure 5, the TCI status determination device 500 may include the following modules:

The first sending module 501 is used to indicate common beam information to the terminal, where the common beam information includes M first TCI states, where M is a positive integer;

The second determination module 502 is configured to determine the target TCI state of the target channel and/or the target signal from the M first TCI states;

Optionally, the second determination module 502 is specifically used to:

The number of the first TCI states;

The arrangement order or position of the M first TCI states;

The type of target channel and/or target signal;

The target channel and/or the transmission mode of the target signal;

The time domain behavior of the target channel and/or target signal;

The target indication field of the first DCI, the target indication field is used to indicate the M first At least one of the TCI states;

SRS resource set identification information;

SRS resource identification information;

CSI-RS resource group identification information;

CSI-RS resource identification information;

Control resource set CORESET group identification information;

CORESET identification information;

Search space set identification information;

DMRS port identification information of the target channel;

The frequency domain resource identification information of the target channel;

The layer identification information of the target channel.

Optionally, the TCI status determination device 500 also includes:

A fourth determination module, configured to determine the N preset TCI states from the M first TCI states according to third information, wherein the third information is indicated by the network side device or agreed by the protocol;

The second determination module 502 is specifically used to:

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.

The second determination module 502 is specifically used to:

Determining the target TCI state of the target signal includes a TCI state corresponding to the same code point as the second TCI state or the second TCI state, and the target signal includes at least one of the following:

The CSI-RS resource group that the terminal needs to send is based on the CSI-RS resource group identification information triggered by the first DCI and the CSI-RS resource group that the terminal needs to send. The corresponding relationship between the first TCI states and the determination of the TCI state indicated by the target indication field of the first DCI;

The second determination module 502 is specifically used to:

Optionally, when the first DCI is used to schedule PDSCH, the target indication field Indicates the TCI status of the PDSCH scheduled by the first DCI. The M first TCI status includes the TCI status corresponding to the same code point as the third TCI status and the third TCI status. The third TCI status includes the The TCI status of the PDSCH scheduled by the first DCI;

The second determination module 502 is specifically used to:

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.

The second determination module 502 is specifically used to:

In the case where m is greater than K, determine the K TCI states among the m first TCI states that are located at preset positions or indicated by the first indication information sent by the network side device to the terminal. is the target TCI state of the target channel and/or target signal; and/or,

When m is less than K, the m first TCI states are determined as the TCI states of the target channels and/or target signals corresponding to the m pieces of first identification information, and the m first identification information is the Among the K pieces of first identification information, m pieces of first identification information are arranged in a preset position or indicated by the second indication information sent by the network side device to the terminal; and/or,

Optionally, the target signal includes SRS, and the periodic behavior of the SRS is aperiodic In the case of , the second determination module 502 is specifically used to:

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then according to the K SRS resources The corresponding relationship between the set and the K first TCI states is determined to determine the TCI state of each SRS resource set in the K SRS resource sets, wherein the target TCI state includes the K first TCI states. , K is a positive integer; and/or,

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then according to the K SRS resources The corresponding relationship between the set and the X first TCI states is to determine the TCI state of each SRS resource in the K SRS resource set, wherein the target channel and/or target signal includes the K SRS Resource set, the target TCI state includes the X first TCI states, where X represents the total number of SRS resources included in the K SRS resource set, and X is a positive integer.

Optionally, when the target signal includes CSI-RS and the periodic behavior of the CSI-RS is aperiodic, the second determination module 502 is specifically configured to:

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then the K CSI -The corresponding relationship between the RS resource set and the X first TCI states, determining the TCI state of each CSI-RS resource group in the K CSI-RS resource set, wherein the target TCI state includes all The X first TCI states, where X represents the total number of CSI-RS resource groups included in the K CSI-RS resource sets, and X is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates H first TCI states, then according to the K The corresponding relationship between the CSI-RS resource set and the H first TCI states determines the The TCI state of each CSI-RS resource in the K CSI-RS resource set, wherein the target TCI state includes the H first TCI states, where H represents the K CSI-RS resource set. The total number of CSI-RS resources in the included CSI-RS resource group, H is a positive integer.

Optionally, when the target channel includes PDCCH, the second determination module 502 is specifically configured to:

The original TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the second identifier, and the target TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the third Three identifiers. When the second identifier and the third identifier are used to identify the target resource, the TCI status determining device 500 further includes:

The second association module is used to switch the preset CORESET or the preset CORESET group or the preset search space set to be associated with the third identification; or,

A third switching module configured to switch the preset CORESET or preset CORESET group or preset search space set to target resource transmission associated with the third identifier; or,

The fourth switching module is used to determine that the terminal switches from the target resource associated with the second identity to the target resource associated with the third identity.

Optionally, the target resource includes at least one of the following:

The arrangement order of the DMRS groups of the PDSCH or PUSCH;

The parity order of the DMRS groups of the PDSCH or PUSCH;

The arrangement order of the DMRS ports of the PDSCH or PUSCH;

The parity sequence of the DMRS ports of the PDSCH or PUSCH;

The arrangement order of the frequency domain resources of the PDSCH or PUSCH;

The parity order of the frequency domain resources of the PDSCH or PUSCH;

The arrangement order of the PDSCH or PUSCH layers;

The parity order of the PDSCH or PUSCH layers.

Optionally, when M is equal to 1, the second determination module 502 is specifically used to:

Determine that the target channel and/or the target signal perform single beam or single TRP transmission based on the 1 first TCI state; or,

Optionally, the second determination module 502 includes:

A third determination unit configured to determine that the target channel and/or target signal that the terminal needs to transmit includes the target channel and/or target signal associated with the first TCI state; or,

A fourth determination unit, configured to determine that the target channel and/or target signal that the terminal needs to transmit includes the target channel and/or target signal associated with the target resource corresponding to the first TCI state;

Wherein, the target resources include at least one of the following:

The TCI status determination device 500 in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be a network-side device, or may be other devices besides the network-side device. For example, network side devices may include but are not limited to the types of network side devices 12 listed above. Other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

The TCI status determination device 500 provided in this embodiment can implement each process in the method embodiment shown in Figure 3, and can achieve the same beneficial effects. To avoid duplication, the details will not be described again.

Optionally, as shown in Figure 6, this embodiment of the present application also provides a communication device 600, which includes a processor 601 and a memory 602. The memory 602 stores programs or instructions that can be run on the processor 601, such as , when the communication device 600 is a terminal, when the program or instruction is executed by the processor 601, each step of the TCI state determination method embodiment shown in Figure 2 or Figure 3 is implemented, and the same technical effect can be achieved. When the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement the steps of the method embodiment shown in Figure 2; when the communication device 600 is a network-side device, the program or instruction is executed by the processor 601 Each step of the method embodiment shown in Figure 3 can be implemented simultaneously, and the same technical effect can be achieved. To avoid repetition, the details will not be described here.

An embodiment of the present application also provides a terminal, including a processor and a communication interface. The communication interface is used to obtain the common beam information indicated by the network side device, wherein the common beam information includes M first TCI states, M is A positive integer; the processor is configured to determine the target channel and/or the target TCI state of the target signal from the M first TCI states; wherein the target channel includes: physical uplink control channel PUCCH, physical downlink control channel At least one of PDCCH, physical downlink shared channel PDSCH and physical uplink shared channel PUSCH; or, the target signal includes: at least one of sounding reference signal SRS and channel state information reference signal CSI-RS.

This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 7 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

The terminal 700 includes but is not limited to: radio frequency unit 701, network module 702, audio output unit 703, at least some components of the input unit 704, the sensor 705, the display unit 706, the user input unit 707, the interface unit 708, the memory 709, the processor 710, and the like.

Those skilled in the art can understand that the terminal 700 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 710 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 7 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.

It should be understood that in the embodiment of the present application, the input unit 704 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and a microphone 7042. The graphics processor 7041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras). The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072 . Touch panel 7071, also called touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 701 can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.

Memory 709 may be used to store software programs or instructions as well as various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 709 may include volatile memory or non-volatile memory, or memory 709 may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access memory) Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory Access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). Memory 709 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above-mentioned modem processor may not be integrated into the processor 710.

The radio frequency unit 701 is used to obtain the common beam information indicated by the network side device, where the common beam information includes M first TCI states, and M is a positive integer;

Processor 710, configured to determine the target TCI state of the target channel and/or the target signal from the M first TCI states;

Wherein, the target channel includes: at least one of the physical uplink control channel PUCCH, physical downlink control channel PDCCH, physical downlink shared channel PDSCH and physical uplink shared channel PUSCH; the target signal includes: sounding reference signal SRS and channel The status information refers to at least one item in the CSI-RS.

Optionally, the determination of the target TCI state of the target channel and/or the target signal from the M first TCI states performed by the processor 710 includes:

The number of the first TCI states;

The arrangement order or position of the M first TCI states;

The type of target channel and/or target signal;

The target channel and/or the transmission mode of the target signal;

The time domain behavior of the target channel and/or target signal;

SRS resource set identification information;

SRS resource identification information;

CSI-RS resource group identification information;

CSI-RS resource identification information;

Control resource set CORESET group identification information;

CORESET identification information;

Search space set identification information;

DMRS port identification information of the target channel;

The frequency domain resource identification information of the target channel;

The layer identification information of the target channel.

Optionally, the processor 710 is further configured to determine the N preset TCI states from the M first TCI states according to third information, wherein the third information is indicated by the network side device or by agreement;

The step performed by the processor 710 to determine the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information includes:

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.

The processor 710 determines from the M first TCI states according to the target information. The target TCI status of the target channel and/or target signal, including:

Optionally, in the case where the target signal includes an SRS and the periodic behavior of the SRS is aperiodic, the processor 710 determines the target channel from the M first TCI states according to the target information. and/or the target TCI status of the target signal, including:

Optionally, in the case where the target signal includes CSI-RS, and the periodic behavior of the CSI-RS is aperiodic, the processor 710 performs the step of selecting from the M first signals according to the target information. The target TCI status of the target channel and/or target signal is determined in the TCI status, including:

Optionally, in the case where the target channel includes a PDCCH, the processor 710 determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including: :

The original TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the second identifier, and the target TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the third Three identifiers. When the second identifier and the third identifier are used to identify the target resource, the processor 710 is also used to:

Switch the preset CORESET or preset CORESET group or preset search space set to be associated with the third identification; or,

Switch the preset CORESET or preset CORESET group or preset search space set to the target resource transmission associated with the third identifier; or,

The target resource associated with the second identification is switched to the target resource associated with the third identification.

Optionally, the target resource includes at least one of the following:

The arrangement order of the DMRS groups of the PDSCH or PUSCH;

The parity order of the DMRS groups of the PDSCH or PUSCH;

The arrangement order of the DMRS ports of the PDSCH or PUSCH;

The parity sequence of the DMRS ports of the PDSCH or PUSCH;

The arrangement order of the frequency domain resources of the PDSCH or PUSCH;

The parity order of the frequency domain resources of the PDSCH or PUSCH;

The arrangement order of the PDSCH or PUSCH layers;

The parity order of the PDSCH or PUSCH layers.

Optionally, when M is equal to 1, the determination of the target TCI state of the target channel and/or the target signal from the M first TCI states performed by the processor 710 includes:

Update the original TCI of the target channel and/or target signal according to the first TCI status The first preset TCI state in the state is the target TCI state of the target channel and/or target signal, and the first preset TCI state is the original TCI state of the target channel and/or target signal. one; or,

Optionally, the determination performed by the processor 710 to perform single beam or single TRP transmission on the target channel and/or the target signal based on the 1 first TCI state includes:

It is determined that the target channel and/or target signal that needs to be transmitted include the target channel and/or target signal associated with the first TCI state; or,

It is determined that the target channel and/or target signal that needs to be transmitted includes the target channel and/or target signal associated with the target resource corresponding to the first TCI state;

Wherein, the target resources include at least one of the following:

The above-mentioned terminal 700 can implement the process of implementing each model in the TCI determination device 400 as shown in Figure 4, and can achieve the same technical effect. To avoid duplication, the details will not be described again.

An embodiment of the present application also provides a network side device including a processor and a communication interface. The communication interface is used to indicate common beam information to the terminal, wherein the common beam information includes M first TCI states, and M is a positive integer. ; The processor is configured to determine the target channel and/or the target TCI state of the target signal from the M first TCI states; wherein the target channel includes: physical uplink control channel PUCCH, physical downlink control channel PDCCH, At least one of the physical downlink shared channel PDSCH and the physical uplink shared channel PUSCH; or, the target signal includes: at least one of the sounding reference signal SRS and the channel state information reference signal CSI-RS.

This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and the above-mentioned method implements Each implementation process and implementation method of the example can be applied to the network side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in FIG. 8 , the network side device 800 includes: an antenna 801 , a radio frequency device 802 , a baseband device 803 , a processor 804 and a memory 805 . Antenna 801 is connected to radio frequency device 802. In the uplink direction, the radio frequency device 802 receives information through the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be sent and sends it to the radio frequency device 802. The radio frequency device 802 processes the received information and then sends it out through the antenna 801.

The method performed by the network side device in the above embodiment can be implemented in the baseband device 803, which includes a baseband processor.

The baseband device 803 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.

The network side device may also include a network interface 806, which is, for example, a common public radio interface (CPRI).

Specifically, the network side device 800 in this embodiment of the present invention also includes: instructions or programs stored in the memory 805 and executable on the processor 804. The processor 804 calls the instructions or programs in the memory 805 to execute each of the steps shown in Figure 5. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.

Embodiments of the present application also provide a readable storage medium on which a program or instructions are stored. When the program or instructions are executed by a processor, the embodiment of the TCI state determination method is implemented as shown in Figure 2 or Figure 3. Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions. The implementation is as shown in the figure 2 or the various processes of the TCI status determination method embodiment shown in Figure 3, and can achieve the same technical effect, so to avoid repetition, they will not be described again here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement Figure 2 or Figure 3 Each process of the TCI status determination method embodiment shown can achieve the same technical effect. To avoid duplication, it will not be described again here.

Embodiments of the present application also provide a wireless communication system, including: a terminal and a network side device. The terminal can be used to perform the steps of the TCI status determination method as shown in Figure 2. The network side device can be used to perform the steps of the TCI status determination method as shown in Figure 3. Shown are the steps of the TCI status determination method.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims

A transmission configuration indication TCI status determination method includes:

The terminal obtains the common beam information indicated by the network side device, where the common beam information includes M first TCI states, and M is a positive integer;

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states;

Wherein, the target channel includes: at least one of the physical uplink control channel PUCCH, physical downlink control channel PDCCH, physical downlink shared channel PDSCH and physical uplink shared channel PUSCH; the target signal includes: sounding reference signal SRS and channel The status information refers to at least one item in the CSI-RS.
The method according to claim 1, wherein the terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states, including:

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to target information, wherein the target information includes at least one of the following:

The number of the first TCI states;

The corresponding relationship between the first TCI state and first identification information, the first identification information being used to identify at least one of the target channel and/or the target signal;

The number of first identification information corresponding to the target channel and/or target signal;

The value of the first identification information corresponding to the target channel and/or target signal;

The arrangement order or position of the M first TCI states;

The arrangement order of the first identification information corresponding to the target channel and/or target signal;

The type of target channel and/or target signal;

The target channel and/or the transmission mode of the target signal;

The time domain behavior of the target channel and/or target signal;

First information or second information, the first information indicates that the first downlink control information DCI schedules PUSCH or PDSCH, the second information indicates that the first DCI does not schedule PUSCH or PDSCH, and the first DCI is used to trigger The target signal or scheduling the target channel;

The target indication field of the first DCI, the target indication field is used to indicate the M first At least one of the TCI states;

N preset TCI states, the common beam information includes the N preset TCI states, N is a positive integer less than or equal to M;

Correspondence between the N preset TCI states and the first identification information.
The method according to claim 2, wherein the first identification information includes at least one of the following:

SRS resource set identification information;

SRS resource identification information;

Channel state information reference signal CSI-RS resource set identification information;

CSI-RS resource group identification information;

CSI-RS resource identification information;

Control resource set CORESET group identification information;

CORESET identification information;

Search space set identification information;

Demodulation reference signal DMRS group identification information of the target channel;

DMRS port identification information of the target channel;

The frequency domain resource identification information of the target channel;

The layer identification information of the target channel.
The method according to claim 2, wherein the corresponding relationship between the first TCI state and the first identification information includes at least one of the following:

The corresponding relationship between the arrangement positions of the M first TCI states and the arrangement positions of the first identification information;

Correspondence between the first TCI status indicated by the network side device and the first identification information.
The method according to claim 2, wherein M is an integer greater than 2 when the transmission mode of the target channel and/or the target signal is a coherent joint transmission (CJT) mode.
The method according to claim 2 or 5, further comprising:

The terminal determines the N preset TCI states from the M first TCI states according to third information, wherein the third information is indicated by the network side device or agreed by the protocol;

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The terminal determines the target TCI state of the target channel and/or the target signal from the N preset TCI states according to the target information.
The method according to claim 2, wherein when the first DCI is used to schedule PUSCH, the target indication field indicates the TCI status of the PUSCH scheduled by the first DCI, and the M first TCI The status includes the TCI status of the PUSCH scheduled by the first DCI;

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The terminal determines that the target TCI state of the target signal includes the TCI state indicated by the target indication field, and the target signal includes at least one of the following:

SRS in the SRS resource set that the terminal needs to send, wherein the SRS resource set that the terminal needs to send is based on the correspondence between the SRS resource set identification information triggered by the first DCI and the first TCI state, and The TCI status indicated by the target indication field is determined;

SRS among the SRS resources that the terminal needs to send, wherein the SRS resources that the terminal needs to send are based on the corresponding relationship between the SRS resource identification information triggered by the first DCI and the first TCI state, and the The TCI status indicated by the target indication field of the first DCI is determined;

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.
The method according to claim 2, wherein when the first DCI is used to schedule PUSCH, the target indication field indicates the TCI status of the PUSCH scheduled by the first DCI, and the M first TCI The state includes a TCI state corresponding to the same code point as the second TCI state and the second TCI state, where the second TCI state includes the TCI state of the PUSCH scheduled by the first DCI;

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The terminal determines that the target TCI state of the target signal includes a TCI state corresponding to the same code point as the second TCI state or the second TCI state, wherein the target target signal includes at least one of the following:

The CSI-RS in the CSI-RS resource set that the terminal needs to send, where the terminal needs The sent CSI-RS resource set is determined based on the correspondence between the CSI-RS resource set identification information triggered by the first DCI and the first TCI state, and the TCI state indicated by the target indication field;

CSI-RS in the CSI-RS resource group that the terminal needs to send, wherein the CSI-RS resource group that the terminal needs to send is based on the CSI-RS resource group identification information triggered by the first DCI and the first Correspondence between TCI states, and determination of the TCI state indicated by the target indication field of the first DCI;

CSI-RS in the CSI-RS resources that the terminal needs to send, wherein the CSI-RS resources that the terminal needs to send are based on the combination of the CSI-RS resource identification information triggered by the first DCI and the first TCI state. The corresponding relationship between, and the determination of the TCI status indicated by the target indication field of the first DCI;

All CSI-RS resource sets or CSI-RS resource groups or CSI-RS in CSI-RS resources triggered by the first DCI.
The method according to claim 2, wherein when the first DCI is used to schedule PDSCH, the target indication field indicates the TCI status of the PDSCH scheduled by the first DCI, and the M first TCI The status includes the TCI status of the PDSCH scheduled by the first DCI;

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The terminal determines that the target TCI state of the target signal includes the TCI state indicated by the target indication field, and the target signal includes at least one of the following:

The CSI-RS resource set that the terminal needs to send is based on the CSI-RS resource set identification information triggered by the first DCI and the first TCI. Correspondence between states, and determination of the TCI state indicated by the target indication field;

CSI-RS in the CSI-RS resource group that the terminal needs to send, wherein the CSI-RS resource group that the terminal needs to send is based on the CSI-RS resource group identification information triggered by the first DCI and the first Correspondence between TCI states, and determination of the TCI state indicated by the target indication field of the first DCI;

The CSI-RS in the CSI-RS resources that the terminal needs to send, where the terminal needs to send The sent CSI-RS resources are determined based on the correspondence between the CSI-RS resource identification information triggered by the first DCI and the first TCI state, and the TCI state indicated by the target indication field of the first DCI;

All CSI-RS resource sets or CSI-RS resource groups or CSI-RS in CSI-RS resources triggered by the first DCI.
The method according to claim 2, wherein when the first DCI is used to schedule PDSCH, the target indication field indicates the TCI status of the PDSCH scheduled by the first DCI, and the M first TCI The state includes a TCI state corresponding to the same code point as the third TCI state and the third TCI state, where the third TCI state includes the TCI state of the PDSCH scheduled by the first DCI;

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The terminal determines that the target TCI state of the target signal includes a TCI state corresponding to the same code point as the third TCI state or the third TCI state, and the target signal includes at least one of the following:

SRS in the SRS resource set that the terminal needs to send, wherein the SRS resource set that the terminal needs to send is based on the correspondence between the SRS resource set identification information triggered by the first DCI and the first TCI state, and The TCI status indicated by the target indication field is determined;

SRS among the SRS resources that the terminal needs to send, wherein the SRS resources that the terminal needs to send are based on the corresponding relationship between the SRS resource identification information triggered by the first DCI and the first TCI state, and the The TCI status indicated by the target indication field of the first DCI is determined;

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.
The method according to claim 2, wherein m is the number of first TCI states included in the M first TCI states or the N preset TCI states that are suitable for the target channel and/or target signal. , K is the number of first identification information corresponding to the target channel and/or target signal;

The terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

In the case where m is equal to K, the terminal determines that the target TCI state of the target channel and/or target signal includes the m first TCI states; and/or,

In the case where m is greater than K, the terminal sets the bits in the m first TCI states and The K TCI states indicated at the preset position or by the first indication information from the network side device are determined to be the target TCI states of the target channel and/or the target signal; and/or,

When m is less than K, the terminal determines the m first TCI states as the TCI states of the target channels and/or target signals corresponding to the m first identification information. m pieces of first identification information among the K pieces of first identification information and arranged in a preset position or indicated by the second indication information from the network side device; and/or,

The terminal determines that the target TCI state includes the m first TCI states and the K-m original TCI states of the target channel and/or target signal.
The method according to any one of claims 2 to 11, wherein when the target signal includes SRS and the periodic behavior of the SRS is aperiodic, the terminal obtains the information from the M according to the target information. The target TCI state of the target channel and/or target signal is determined in the first TCI state, including:

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then the terminal The corresponding relationship between the K SRS resource sets and the K first TCI states determines the TCI state of each SRS resource set in the K SRS resource sets, wherein the target TCI state includes the Kth A TCI state, K is a positive integer; and/or,

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then the terminal The corresponding relationship between the SRS resource sets and the X first TCI states determines the TCI state of each SRS resource in the K SRS resource sets, wherein the target channel and/or target signal includes the There are K SRS resource sets, and the target TCI state includes the X first TCI states, where X represents the total number of SRS resources included in the K SRS resource sets, and X is a positive integer.
The method according to any one of claims 2 to 9, wherein when the target signal includes CSI-RS and the periodic behavior of the CSI-RS is aperiodic, the terminal, according to the target information, Determining the target TCI state of the target channel and/or the target signal from the M first TCI states includes:

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then the terminal based on the correspondence between the K CSI-RS resource sets and the K first TCI states, Determine the TCI state of each CSI-RS resource set in the K CSI-RS resource sets, wherein the target TCI state includes the K first TCI states, and K is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then the terminal The corresponding relationship between the K CSI-RS resource sets and the X first TCI states determines the TCI state of each CSI-RS resource group in the K CSI-RS resource sets, wherein the target The TCI state includes the X first TCI states, where X represents the total number of CSI-RS resource groups included in the K CSI-RS resource sets, and X is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates H first TCI states, then the terminal The corresponding relationship between the K CSI-RS resource sets and the H first TCI states determines the TCI state of each CSI-RS resource in the K CSI-RS resource sets, wherein the target TCI The status includes the H first TCI status, where H represents the total number of CSI-RS resources in the CSI-RS resource group included in the K CSI-RS resource set, and H is a positive integer.
The method according to claim 2, wherein, when the target channel includes a PDCCH, the terminal determines the target TCI of the target channel and/or the target signal from the M first TCI states according to the target information. status, including:

The terminal determines a target TCI state of a preset CORESET or a preset CORESET group or a preset search space set corresponding to the PDCCH from the M first TCI states according to the target information;

The original TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the second identifier, and the target TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the third Three identifiers. When the second identifier and the third identifier are used to identify the target resource, the method further includes:

The terminal switches the preset CORESET or the preset CORESET group or the preset search space set to be associated with the third identification; or,

The terminal sets the preset CORESET or the preset CORESET group or the preset search space set. Switch to target resource transmission associated with the third identifier; or,

The terminal switches from the target resource associated with the second identification to the target resource associated with the third identification.
The method of claim 14, wherein the target resource includes at least one of the following:

Cell identity, physical cell identity, bandwidth part BWP identity, sending and receiving point TRP identity, public TCI status pool identity, public TCI state type value, CORESET group identity, CORESET identity, channel group identity, CORESET pool identity, search space set identity, Search space ID, synchronization signal block SSB ID, SSB group ID.
The method according to claim 2 or 5, wherein, in the case where the target channel includes the PDSCH or PUSCH scheduled by the first DCI, the target indication field of the first DCI indicates that the target channel is used for the PDSCH or PUSCH. The first TCI state and/or the target indication field of the first DCI indicates the corresponding relationship between at least two pieces of identification information of the PDSCH or PUSCH and at least two first TCI states.
The method according to claim 16, wherein the corresponding relationship between at least two pieces of identification information of the PDSCH or PUSCH and at least two first TCI states includes at least one of the following:

The corresponding relationship between the first TCI state and the fourth information of the PDSCH or PUSCH, the fourth information includes: at least one of DMRS group, DMRS port, frequency domain resource and layer;

The corresponding relationship between the arrangement order of the first TCI state and the first arrangement order, the first arrangement order includes at least one of the following:

The arrangement order of the DMRS groups of the PDSCH or PUSCH;

The parity order of the DMRS groups of the PDSCH or PUSCH;

The arrangement order of the DMRS ports of the PDSCH or PUSCH;

The parity sequence of the DMRS ports of the PDSCH or PUSCH;

The arrangement order of the frequency domain resources of the PDSCH or PUSCH;

The parity order of the frequency domain resources of the PDSCH or PUSCH;

The arrangement order of the PDSCH or PUSCH layers;

The parity order of the PDSCH or PUSCH layers.
The method according to any one of claims 1 to 9, wherein when M equals 1 Next, the terminal determines the target TCI state of the target channel and/or the target signal from the M first TCI states, including:

The terminal updates the first preset TCI state among the original TCI states of the target channel and/or target signal according to the first TCI state, and obtains the target TCI state of the target channel and/or target signal. , the first preset TCI state is one of the original TCI states of the target channel and/or the target signal; or,

The terminal determines that the target channel or target signal performs single beam or single TRP transmission based on the 1 first TCI state; or,

The terminal determines that the target channel and/or the target signal share the first TCI state.
The method according to claim 18, wherein the terminal determines that the target channel and/or the target signal performs single beam or single TRP transmission based on the 1 first TCI state, including:

The terminal determines that the target channel and/or target signal that needs to be transmitted include the target channel and/or target signal associated with the first TCI state; or,

The target channel and/or target signal that the terminal determines needs to be transmitted include the target channel and/or target signal associated with the target resource corresponding to the one first TCI state;

Wherein, the target resources include at least one of the following:

Cell identity, physical cell identity, bandwidth part BWP identity, sending and receiving point TRP identity, public TCI status pool identity, public TCI state type value, CORESET group identity, CORESET identity, channel group identity, CORESET pool identity, search space set identity, Search space ID, synchronization signal block SSB ID, SSB group ID.
The method according to any one of claims 1 to 9, wherein the M first TCI states include at least one of the following: M1 joint TCI states, M2 independent downlink DL TCI states, and M3 independent Uplink UL TCI status.
A transmission configuration indication TCI status determination method includes:

The network side device indicates common beam information to the terminal, where the common beam information includes M first TCI states, M is a positive integer;

The network side device determines the target TCI state of the target channel and/or the target signal from the M first TCI states;

Wherein, the target channel includes: physical uplink control channel PUCCH, physical downlink control channel channel PDCCH, physical downlink shared channel PDSCH and physical uplink shared channel PUSCH; or, the target signal includes: at least one of sounding reference signal SRS and channel state information reference signal CSI-RS.
The method according to claim 21, wherein the network side device determines the target TCI state of the target channel or target signal from the M first TCI states, including:

The network side device determines the target channel and/or the target TCI state of the target signal from the M first TCI states according to target information, wherein the target information includes at least one of the following:

The number of the first TCI states;

Correspondence between the first TCI state and first identification information, the first identification information being used to identify at least one of the target channel and/or the target signal;

The number of first identification information corresponding to the target channel and/or target signal;

The value of the first identification information corresponding to the target channel and/or target signal;

The arrangement order or position of the M first TCI states;

The arrangement order of the first identification information corresponding to the target channel and/or target signal;

The type of target channel and/or target signal;

The target channel and/or the transmission mode of the target signal;

The time domain behavior of the target channel and/or target signal;

First information or second information, the first information indicates that the first downlink control information DCI schedules PUSCH or PDSCH, the second information indicates that the first DCI does not schedule PUSCH or PDSCH, and the first DCI is used to trigger The target signal or scheduling the target channel;

The target indication field of the first DCI, the target indication field is used to indicate at least one of the M first TCI states;

N preset TCI states, the common beam information includes the N preset TCI states, N is a positive integer less than or equal to M;

Correspondence between the N preset TCI states and the first identification information.
The method of claim 22, wherein the first identification information includes at least one of the following:

SRS resource set identification information;

SRS resource identification information;

Channel state information reference signal CSI-RS resource set identification information;

CSI-RS resource group identification information;

CSI-RS resource identification information;

Control resource set CORESET group identification information;

CORESET identification information;

Search space set identification information;

Demodulation reference signal DMRS group identification information of the target channel;

DMRS port identification information of the target channel;

The frequency domain resource identification information of the target channel;

The layer identification information of the target channel.
The method according to claim 22, wherein the correspondence between the first TCI state and the first identification information includes at least one of the following:

The corresponding relationship between the arrangement positions of the M first TCI states and the arrangement positions of the first identification information;

Correspondence between the first TCI status indicated by the network side device and the first identification information.
The method according to claim 22, wherein M is an integer greater than 2 when the transmission mode of the target channel and/or the target signal is a coherent joint transmission (CJT) mode.
The method according to claim 22 or 25, further comprising:

The network side device determines the N preset TCI states from the M first TCI states according to third information, wherein the third information is indicated by the network side device or agreed by the protocol;

The network side device determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The network side device determines the target TCI state of the target channel and/or the target signal from the N preset TCI states according to the target information.
The method according to claim 22, wherein when the first DCI is used to schedule PUSCH, the target indication field indicates the TCI status of the PUSCH scheduled by the first DCI, and the M first TCI The status includes the TCI status of the PUSCH scheduled by the first DCI;

The network side device determines the target information from the M first TCI states according to the target information. Target TCI status of the channel and/or target signal, including:

The network side device determines that the target TCI state of the target signal includes the TCI state indicated by the target indication field, and the target signal includes at least one of the following:

SRS in the SRS resource set that the terminal needs to send, wherein the SRS resource set that the terminal needs to send is based on the correspondence between the SRS resource set identification information triggered by the first DCI and the first TCI state, and The TCI status indicated by the target indication field is determined;

SRS among the SRS resources that the terminal needs to send, wherein the SRS resources that the terminal needs to send are based on the corresponding relationship between the SRS resource identification information triggered by the first DCI and the first TCI state, and the The TCI status indicated by the target indication field of the first DCI is determined;

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.
The method according to claim 22, wherein when the first DCI is used to schedule PUSCH, the target indication field indicates the TCI status of the PUSCH scheduled by the first DCI, and the M first TCI The state includes a TCI state corresponding to the same code point as the second TCI state and the second TCI state, where the second TCI state includes the TCI state of the PUSCH scheduled by the first DCI;

The network side device determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The network side device determines that the target TCI state of the target signal includes a TCI state corresponding to the same code point as the second TCI state or the second TCI state, and the target signal includes at least one of the following:

The CSI-RS resource set that the terminal needs to send is based on the CSI-RS resource set identification information triggered by the first DCI and the first TCI. Correspondence between states, and determination of the TCI state indicated by the target indication field;

CSI-RS in the CSI-RS resource group that the terminal needs to send, wherein the CSI-RS resource group that the terminal needs to send is based on the CSI-RS resource group identification information triggered by the first DCI and the first Correspondence between TCI states, and determination of the TCI state indicated by the target indication field of the first DCI;

The CSI-RS in the CSI-RS resources that the terminal needs to send, where the terminal needs to send The sent CSI-RS resources are determined based on the correspondence between the CSI-RS resource identification information triggered by the first DCI and the first TCI state, and the TCI state indicated by the target indication field of the first DCI;

All CSI-RS resource sets or CSI-RS resource groups or CSI-RS in CSI-RS resources triggered by the first DCI.
The method of claim 22, wherein when the first DCI is used to schedule PDSCH, the target indication field indicates a TCI status of the PDSCH scheduled by the first DCI, and the M first TCI The status includes the TCI status of the PDSCH scheduled by the first DCI;

The network side device determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The network side device determines that the target TCI state of the target signal includes the TCI state indicated by the target indication field, and the target signal includes at least one of the following:

The CSI-RS resource set that the terminal needs to send is based on the CSI-RS resource set identification information triggered by the first DCI and the first TCI. Correspondence between states, and determination of the TCI state indicated by the target indication field;

CSI-RS in the CSI-RS resource group that the terminal needs to send, wherein the CSI-RS resource group that the terminal needs to send is based on the CSI-RS resource group identification information triggered by the first DCI and the first Correspondence between TCI states, and determination of the TCI state indicated by the target indication field of the first DCI;

CSI-RS in the CSI-RS resources that the terminal needs to send, wherein the CSI-RS resources that the terminal needs to send are based on the combination of the CSI-RS resource identification information triggered by the first DCI and the first TCI state. The corresponding relationship between, and the determination of the TCI status indicated by the target indication field of the first DCI;

All CSI-RS resource sets or CSI-RS resource groups or CSI-RS in CSI-RS resources triggered by the first DCI.
The method of claim 22, wherein when the first DCI is used to schedule PDSCH, the target indication field indicates a TCI status of the PDSCH scheduled by the first DCI, and the M first TCI The status includes the TCI status corresponding to the same code point as the third TCI status and all The third TCI state includes the TCI state of the PDSCH scheduled by the first DCI;

The network side device determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

The network side device determines that the target TCI state of the target signal includes a TCI state corresponding to the same code point as the third TCI state or the third TCI state, and the target signal includes at least one of the following:

SRS in the SRS resource set that the terminal needs to send, wherein the SRS resource set that the terminal needs to send is based on the correspondence between the SRS resource set identification information triggered by the first DCI and the first TCI state, and The TCI status indicated by the target indication field is determined;

SRS among the SRS resources that the terminal needs to send, wherein the SRS resources that the terminal needs to send are based on the corresponding relationship between the SRS resource identification information triggered by the first DCI and the first TCI state, and the The TCI status indicated by the target indication field of the first DCI is determined;

All SRS resource sets triggered by the first DCI or SRS in the SRS resources.
The method of claim 22, wherein m is the number of first TCI states included in the M first TCI states or the N preset TCI states that are suitable for the target channel and/or target signal. , K is the number of first identification information corresponding to the target channel and/or target signal;

The network side device determines the target TCI state of the target channel and/or the target signal from the M first TCI states according to the target information, including:

When m is equal to K, the network side device determines that the target TCI state of the target channel and/or target signal includes the m first TCI states; and/or,

In the case where m is greater than K, the network side device determines the K that is in the m first TCI states and is located at a preset position or indicated by the first indication information sent by the network side device to the terminal. TCI state, determined as the target TCI state of the target channel and/or target signal; and/or,

When m is less than K, the network side device determines the m first TCI states as the TCI states of the target channels and/or target signals corresponding to the m first identification information, and the m first The identification information is the m pieces of first identification information among the K pieces of first identification information and is arranged in a preset position or indicated by the second indication information sent by the network side device to the terminal; and/ or,

The network side device determines that the target TCI state includes the m first TCI states and the K-m original TCI states of the target channel and/or target signal.
The method according to any one of claims 22 to 31, wherein when the target signal includes an SRS and the periodic behavior of the SRS is aperiodic, the network side device obtains the information from the target signal based on the target information. The target TCI state of the target channel and/or target signal is determined among the M first TCI states, including:

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then the network side device The corresponding relationship between the K SRS resource sets and the K first TCI states determines the TCI state of each SRS resource set in the K SRS resource sets, wherein the target TCI state includes the K The first TCI state, K is a positive integer; and/or,

If the first DCI is used to trigger K SRS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then the network side device The corresponding relationship between the K SRS resource sets and the X first TCI states determines the TCI state of each SRS resource in the K SRS resource sets, wherein the target channel and/or target signal includes For the K SRS resource sets, the target TCI state includes the X first TCI states, where X represents the total number of SRS resources included in the K SRS resource sets, and X is a positive integer.
The method according to any one of claims 22 to 31, wherein when the target signal includes CSI-RS and the periodic behavior of the CSI-RS is aperiodic, the network side device Information to determine the target TCI state of the target channel and/or the target signal from the M first TCI states, including:

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates K first TCI states, then the network side device According to the corresponding relationship between the K CSI-RS resource sets and the K first TCI states, the TCI state of each CSI-RS resource set in the K CSI-RS resource sets is determined, wherein, The target TCI state includes the K first TCI states, K is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates X first TCI states, then the network side device will relationship, determining the TCI status of each CSI-RS resource group in the K CSI-RS resource set, wherein the target TCI status includes the X first TCI status, where X represents the K CSI -The total number of CSI-RS resource groups included in the RS resource set, X is a positive integer; and/or,

If the first DCI is used to trigger K CSI-RS resource sets, the first DCI does not schedule PDSCH or PUSCH, and the target indication field of the first DCI indicates H first TCI states, then the network side device According to the corresponding relationship between the K CSI-RS resource sets and the H first TCI states, the TCI state of each CSI-RS resource in the K CSI-RS resource sets is determined, wherein, The target TCI state includes the H first TCI states, where H represents the total number of CSI-RS resources in the CSI-RS resource group included in the K CSI-RS resource sets, and H is a positive integer.
The method according to claim 22, wherein, when the target channel includes a PDCCH, the network side device determines the target channel and/or the target signal from the M first TCI states according to the target information. Target TCI status, including:

The network side device determines the target TCI state of the preset CORESET or the preset CORESET group or the preset search space set corresponding to the PDCCH from the M first TCI states according to the target information;

The original TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the second identifier, and the target TCI state of the preset CORESET, the preset CORESET group, or the preset search space set is associated with the third Three identifiers. When the second identifier and the third identifier are used to identify the target resource, the method further includes:

The network side device switches the preset CORESET or the preset CORESET group or the preset search space set to be associated with the third identification; or,

The network side device switches the preset CORESET or the preset CORESET group or the preset search space set to the target resource transmission associated with the third identifier; or,

The network side device determines that the terminal switches from the target resource associated with the second identity to the target resource associated with the third identity.
The method of claim 34, wherein the target resource includes at least one of the following item:

Cell identity, physical cell identity, bandwidth part BWP identity, sending and receiving point TRP identity, public TCI status pool identity, public TCI state type value, CORESET group identity, CORESET identity, channel group identity, CORESET pool identity, search space set identity, Search space ID, synchronization signal block SSB ID, SSB group ID.
The method according to claim 22 or 25, wherein, in the case where the target channel includes a PDSCH or PUSCH scheduled by the first DCI, the target indication field of the first DCI indicates that the target channel is used for the PDSCH or PUSCH. The first TCI state and/or the target indication field of the first DCI indicates the corresponding relationship between at least two pieces of identification information of the PDSCH or PUSCH and at least two first TCI states.
The method according to claim 36, wherein the corresponding relationship between at least two pieces of identification information of the PDSCH or PUSCH and at least two first TCI states includes at least one of the following:

The corresponding relationship between the first TCI state and the fourth information of the PDSCH or PUSCH, where the fourth information includes: at least one of DMRS group, DMRS port, frequency domain resource and layer;

The corresponding relationship between the arrangement order of the first TCI state and the first arrangement order, the first arrangement order includes at least one of the following:

The arrangement order of the DMRS groups of the PDSCH or PUSCH;

The parity order of the DMRS groups of the PDSCH or PUSCH;

The arrangement order of the DMRS ports of the PDSCH or PUSCH;

The parity sequence of the DMRS ports of the PDSCH or PUSCH;

The arrangement order of the frequency domain resources of the PDSCH or PUSCH;

The parity order of the frequency domain resources of the PDSCH or PUSCH;

The arrangement order of the PDSCH or PUSCH layers;

The parity order of the PDSCH or PUSCH layers.
The method according to any one of claims 21 to 29, wherein, when M is equal to 1, the network side device determines the target channel and/or the target signal from the M first TCI states. TCI status, including:

The network side device updates the first preset TCI state among the original TCI states of the target channel and/or target signal according to the first TCI state to obtain the target channel and/or target signal. The target TCI state of the signal, the first preset TCI state is one of the original TCI states of the target channel and/or the target signal; or,

The network side device determines that the target channel and/or the target signal performs single beam or single TRP transmission based on the 1 first TCI state; or,

The network side device determines that the target channel and/or the target signal share the one first TCI state.
The method according to claim 38, wherein the network side device determines that the target channel and/or the target signal is transmitted in a single beam or a single TRP based on the 1 first TCI state, including:

The network side device determines that the target channel and/or target signal that the terminal needs to transmit includes the target channel and/or target signal associated with the first TCI state; or,

The network side device determines that the target channel and/or target signal that the terminal needs to transmit includes the target channel and/or target signal associated with the target resource corresponding to the first TCI state;

Wherein, the target resources include at least one of the following:

Cell identity, physical cell identity, bandwidth part BWP identity, sending and receiving point TRP identity, public TCI status pool identity, public TCI state type value, CORESET group identity, CORESET identity, channel group identity, CORESET pool identity, search space set identity, Search space ID, synchronization signal block SSB ID, SSB group ID.
The method according to any one of claims 21 to 29, wherein the M first TCI states include at least one of the following: M1 joint TCI states, M2 independent downlink DL TCI states, and M3 independent Uplink UL TCI status.
A TCI status determination device, applied to a terminal, the device includes:;

The acquisition module is used to acquire the common beam information indicated by the network side device, wherein the common beam information includes M first TCI states, and M is a positive integer;

A first determination module, configured to determine the target TCI state of the target channel and/or the target signal from the M first TCI states;

Wherein, the target channel includes: at least one of the physical uplink control channel PUCCH, physical downlink control channel PDCCH, physical downlink shared channel PDSCH and physical uplink shared channel PUSCH; or the target signal includes: sounding reference signal SRS and channel status information parameters At least one of the test signals CSI-RS.
A device for determining TCI status, applied to network side equipment, the device includes:

A first sending module, configured to indicate common beam information to the terminal, where the common beam information includes M first TCI states, where M is a positive integer;

a second determination module, configured to determine the target TCI state of the target channel and/or the target signal from the M first TCI states;

Wherein, the target channel includes: at least one of the physical uplink control channel PUCCH, physical downlink control channel PDCCH, physical downlink shared channel PDSCH and physical uplink shared channel PUSCH; or the target signal includes: sounding reference signal SRS and at least one of channel state information reference signals CSI-RS.
A terminal, including a processor and a memory, the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, any one of claims 1 to 20 is implemented. The steps of the TCI status determination method.
A network-side device includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, any one of claims 21 to 40 is implemented. The steps of the TCI status determination method described in one item.
A readable storage medium on which programs or instructions are stored. When the programs or instructions are executed by a processor, the TCI status determination method as described in any one of claims 1 to 20 is implemented, or the method is implemented The steps of the TCI status determination method according to any one of claims 21 to 40.