WO2024007260A1

WO2024007260A1 - Communication method, terminal device and network device

Info

Publication number: WO2024007260A1
Application number: PCT/CN2022/104410
Authority: WO
Inventors: 方昀; 曹建飞; 史志华
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2024-01-11

Abstract

Provided are a communication method, a terminal device and a network device. The method comprises: a terminal device receiving a plurality of pieces of downlink control information (DCI), wherein some of or all the plurality of pieces of DCI indicate a transmission configuration indicator (TCI) state of a first signal or channel having an association relationship with a first control resource set (CORESET) configured with a first CORESET pool index, and when validation times of TCI states indicated in the plurality of pieces of DCI are the same, the TCI state of the first signal or channel is determined according to the plurality of pieces of DCI, the plurality of pieces of DCI all indicate the TCI states according to a unified TCI architecture, and the plurality of pieces of DCI are transmitted by means of a CORESET configured with the first CORESET pool index and/or a CORESET configured with a second CORESET pool index. In the present application, the TCI state of the first signal or channel can be determined according to the plurality of pieces of DCI, so that the first signal or channel can be accurately transmitted according to the determined TCI state, thereby avoiding abnormal data transmission.

Description

Communication method, terminal equipment and network equipment

Technical field

The present application relates to the field of communication technology, and more specifically, to a communication method, terminal equipment and network equipment.

Background technique

Some communication systems have proposed beam management mechanisms based on a unified transmission configuration indicator (TCI) architecture. A unified TCI architecture can be implemented based on the confirmation mechanism of TCI status indication to improve the accuracy and reliability of TCI status indication. Based on the confirmation mechanism of TCI status indication, after the terminal device correctly receives the downlink control information (DCI) used to indicate the TCI status, the terminal device can send confirmation information to the network device. A period of time after the information transmission is determined Only then can the TCI status indicated by DCI take effect.

In the case where multiple DCIs indicate the TCI status, the terminal device and the network device may not be able to determine which DCI indication is based on to determine the TCI status, resulting in abnormal data transmission.

Contents of the invention

This application provides a communication method, terminal equipment and network equipment. Each aspect involved in this application is introduced below.

In a first aspect, a communication method is provided. The method includes: a terminal device receives a plurality of downlink control information DCI, and part or all of the plurality of DCI indicates a first control resource set configured with a CORESET pool index. The transmission configuration of the first signal or channel associated with CORESET indicates the TCI status; wherein, in the case where the effective time of the TCI status indicated in the multiple DCIs is the same, the TCI status of the first signal or channel is determined according to the The plurality of DCIs are determined, and the plurality of DCIs all indicate TCI status according to a unified TCI architecture. The plurality of DCIs are composed of CORESET configured with the first CORESET pool index and/or CORESET configured with the second CORESET pool index. transmission.

In a second aspect, a communication method is provided. The method includes: a network device sends a plurality of downlink control information DCI, and part or all of the plurality of DCI indicates the first link configured with the first control resource set CORESET pool index. The transmission configuration of the first signal or channel associated with CORESET indicates the TCI status; wherein, in the case where the effective time of the TCI status indicated in the multiple DCIs is the same, the TCI status of the first signal or channel is determined according to the The plurality of DCIs are determined, and the plurality of DCIs all indicate TCI status according to a unified TCI architecture. The plurality of DCIs are composed of CORESET configured with the first CORESET pool index and/or CORESET configured with the second CORESET pool index. transmission.

In a third aspect, a terminal device is provided. The terminal device includes: a receiving unit configured to receive a plurality of downlink control information DCIs, some or all of the plurality of DCIs indicating and configured with a first control resource set CORESET pool. The transmission configuration of the first signal or channel associated with the first CORESET of the index indicates the TCI status; wherein, in the case that the effective time of the TCI status indicated in the multiple DCIs is the same, the first signal or channel The TCI status is determined according to the plurality of DCIs, which all indicate the TCI status according to a unified TCI architecture. The plurality of DCIs are configured by CORESET configured with the first CORESET pool index and/or configured with a second CORESET. CORESET transfer of pooled indexes.

In a fourth aspect, a network device is provided. The network device includes: a sending unit configured to send a plurality of downlink control information DCIs, some or all of the plurality of DCIs indicating and configured with a first control resource set CORESET pool. The transmission configuration of the first signal or channel associated with the first CORESET of the index indicates the TCI status; wherein, in the case that the effective time of the TCI status indicated in the multiple DCIs is the same, the first signal or channel The TCI status is determined according to the plurality of DCIs, which all indicate the TCI status according to a unified TCI architecture. The plurality of DCIs are configured by CORESET configured with the first CORESET pool index and/or configured with a second CORESET. CORESET transfer of pooled indexes.

In a fifth aspect, a terminal device is provided, including a processor, a memory, and a communication interface. The memory is used to store one or more computer programs. The processor is used to call the computer program in the memory so that the terminal The device performs some or all of the steps of the method of the first aspect.

A sixth aspect provides a network device, including a processor, a memory, and a communication interface. The memory is used to store one or more computer programs. The processor is used to call the computer program in the memory so that the network device Perform some or all of the steps of the method of the second aspect.

In a seventh aspect, embodiments of the present application provide a communication system, which includes the above-mentioned terminal device and/or network device. In another possible design, the system may also include other devices that interact with the terminal device or network device in the solution provided by the embodiments of the present application.

In an eighth aspect, embodiments of the present application provide a computer-readable storage medium that stores a computer program, and the computer program causes the terminal to perform some or all of the steps in the methods of the above aspects.

In a ninth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause the terminal to execute each of the above. Some or all of the steps in a method. In some implementations, the computer program product can be a software installation package.

In a tenth aspect, embodiments of the present application provide a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

This application can determine the TCI status of the first signal or channel based on multiple DCIs, so that the first signal or channel can be accurately transmitted based on the determined TCI status, thereby avoiding data transmission abnormalities.

Description of the drawings

Figure 1 is a wireless communication system 100 applied in the embodiment of the present application.

Figure 2 is an example diagram of a DCI indication process based on a unified TCI status architecture.

Figure 3 is an example diagram of a joint HARQ-ACK feedback.

Figure 4 is an example diagram of independent HARQ-ACK feedback.

Figure 5 is an example diagram in which the TCI status effective times of multiple DCI indications are the same in the case of joint HARQ-ACK feedback.

Figure 6 is an example diagram in which the TCI status effective times of multiple DCI indications are the same in the case of independent HARQ-ACK feedback.

Figure 7 is a schematic flow chart of a communication method provided by an embodiment of the present application.

Figure 8 is an example diagram of a scenario where the TCI status takes effect at the same time.

Figure 9 is an example diagram of a scenario where the TCI status takes effect at the same time.

Figure 10 is an example diagram of a scenario where the TCI status takes effect at the same time.

Figure 11 is an example diagram of a scenario where the TCI status takes effect at the same time.

Figure 12 is an example diagram of a scenario where the TCI status takes effect at the same time.

Figure 13 is an example diagram of a scenario where the TCI status takes effect at the same time.

Figure 14 is a schematic structural diagram of a terminal device 1400 provided by an embodiment of the present application.

Figure 15 is a schematic structural diagram of a network device 1500 provided by an embodiment of the present application.

Figure 16 is a schematic structural diagram of a communication device 1600 provided by an embodiment of the present application.

Detailed ways

The technical solutions in this application will be described below with reference to the accompanying drawings.

Communication Systems

Figure 1 is a wireless communication system 100 applied in the embodiment of the present application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120 . The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices 120 located within the coverage area.

Figure 1 exemplarily shows one network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.

Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5th generation, 5G) systems or new radio (NR), long term evolution (long term evolution, LTE) systems , LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solution provided by this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication systems, and so on.

The terminal equipment in the embodiment of this application may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT) ), remote station, remote terminal, mobile device, user terminal, terminal, wireless communications equipment, user agent or user device. The terminal device in the embodiment of the present application may be a device that provides voice and/or data connectivity to users, and may be used to connect people, things, and machines, such as handheld devices and vehicle-mounted devices with wireless connection functions. The terminal device in the embodiment of the present application can be a mobile phone (mobile phone), a tablet computer (Pad), a notebook computer, a handheld computer, a mobile internet device (mobile internet device, MID), a wearable device, a virtual reality (virtual reality, VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc. Optionally, the UE may be used to act as a base station. For example, a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, cell phones and cars use sidelink signals to communicate with each other. Cell phones and smart home devices communicate between each other without having to relay communication signals through base stations.

The network device in the embodiment of the present application may be a device used to communicate with a terminal device. The network device may also be called an access network device or a wireless access network device. For example, the network device may be a base station. The network device in the embodiment of this application may refer to a radio access network (radio access network, RAN) node (or device) that connects the terminal device to the wireless network. The base station can broadly cover various names as follows, or be replaced with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmitting point (TP), main station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (AP), transmission node, transceiver node, base band unit (BBU), radio remote unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc. The base station may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. A base station may also refer to a communication module, modem or chip used in the aforementioned equipment or devices. The base station can also be a mobile switching center and a device that undertakes base station functions in device-to-device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communications, and in 6G networks. Network side equipment, equipment that assumes base station functions in future communication systems, etc. Base stations can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment.

Base stations can be fixed or mobile. For example, a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move based on the mobile base station's location. In other examples, a helicopter or drone may be configured to serve as a device that communicates with another base station.

In some deployments, the network device in the embodiment of this application may refer to a CU or a DU, or the network device includes a CU and a DU. gNB can also include AAU.

Network equipment and terminal equipment can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the sky. In the embodiments of this application, the scenarios in which network devices and terminal devices are located are not limited.

It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

Unified TCI (unified TCI) architecture

In some communication protocols (such as the NG R15/16 protocol), the channel and reference signals can use separate beams. Specifically, each downlink or uplink channel and reference channel can provide beam indication and configuration through separate signaling. For example, the physical downlink control channel (PDCCH) can be individually indicated for each control resource set (CORESET) through medium access control control element (MAC CE) signaling. A TCI status. The physical downlink shared channel (PDSCH) can dynamically indicate the TCI status of the scheduled PDSCH through DCI. Alternatively, in uplink transmission, the beam of the physical uplink control channel (PUCCH) or sounding reference signal (SRS) can pass through the spatial relationship information (spatial relationship) of each PUCCH resource or each SRS resource. information, SRI) indication.

This technical solution provides the greatest flexibility and freedom for communication systems to implement beamforming in actual commercial applications. For example, network equipment is free to choose any beam for transmission for each channel and reference signal. However, this technical solution also has some problems. For example, beam switching may result in excessive signaling overhead and long delays. In addition, in some communication network deployments, the flexibility and freedom brought by this technical solution may not be needed. For example, in some communication systems, a common deployment method is that multiple downlink channels and uplink channels use the same beam, without separate instructions. In addition, the above technical solution uses two different mechanisms for beam management in uplink and downlink. Among them, downlink beam management is a mechanism based on TCI status, and uplink beam management is a mechanism based on spatial relationship information.

In order to solve the above problems and better support beam switching with low latency and low signaling overhead, beam management mechanisms based on a unified TCI architecture are proposed in some communication protocols (such as the NR R17 protocol). Under the unified TCI architecture, the TCI status indicated by DCI can be applied to multiple uplink and/or downlink channels and/or signals. Optionally, the plurality of uplink and/or downlink channels and/or signals may include the first signal or channel.

The beam management mechanism based on the unified TCI architecture mainly includes the following features. On the one hand, the beam indication of all uplink and downlink channels and reference signals can be implemented using the unified concept of TCI status. On the other hand, the transmission beams of the terminal equipment-specific PDCCH, PDSCH, physical uplink shared channel (PUSCH) and PUCCH channel can uniformly use the same TCI state. That is, transmission on these channels can always use the same beam. In this case, the communication system can use a single beam indication signaling to indicate the unified TCI state used by the above-mentioned channel.

Some communication systems have proposed a confirmation mechanism for TCI status indication to improve the accuracy and reliability of TCI status indication. Based on the acknowledgment mechanism of TCI status indication, after the terminal correctly receives the DCI used to indicate the TCI status, the terminal can send hybrid automatic repeat request-acknowledgement (HARQ-ACK) to the network device.

Wherein, for the TCI status indicated by DCI format 1_1 or DCI format 1_2 that schedules PDSCH, the acknowledgment information indicated by the TCI status may be HARQ-ACK feedback of the PDSCH scheduled by the DCI format. Alternatively, for the TCI status indicated by DCI format 1_1 or DCI format 1_2 that does not schedule PDSCH, if the terminal device correctly receives the DCI format, a HARQ-ACK feedback for this DCI format can be fed back.

Figure 2 is an example diagram of the DCI indication process based on the unified TCI status architecture.

As shown in Figure 2, in time slot n, the network device can send a DCI indicating the TCI status in the PDCCH. The DCI may be a DCI format 1_1 or DCI format 1_2 that schedules PDSCH. Alternatively, the DCI may be a DCI format 1_1 or a DCI format 1_2 that does not schedule PDSCH. Among them, n can be an integer greater than or equal to 0.

When the terminal device correctly receives the TCI status indication, the terminal device can send HARQ-ACK feedback of the TCI status indication to the network device in a PUCCH resource of time slot n+k1 according to the configuration information. Among them, k1 can be an integer greater than 0.

Terminal equipment and network equipment can use the latest indicated TCI status starting from time slot n+k2. Among them, k2 can be an integer greater than k1. Time slot n+k2 may be the first time slot not less than Y symbols after sending ACK feedback from the terminal. The value of Y can be configured by the network device. For example, the network device can configure Y to the terminal device through radio resource control (RRC) signaling.

Multi-TRP transmission based on multi-DCI (M-DCI)

In a multi-TRP transmission scenario, the backhaul capacity between multiple TRPs may be limited, which will result in a large delay in the interaction between TRPs. In addition, the channel conditions between different transmission points and terminals are relatively independent. Independent resource scheduling and link adaptation for each TRP through independent PDCCH can bring certain performance gains. Therefore, some communication protocols (such as the NR system R16 protocol) introduce a multi-DCI-based multi-TRP transmission scheme (or called a multi-DCI-based non-correlated transmission scheme).

It should be noted that although the non-coherent transmission scheme based on multi-DCI is mainly introduced for non-ideal backhaul, this transmission scheme can also be used in the case of ideal backhaul.

In the multi-TRP transmission scheme based on multi-DCI, PDSCHs from different TRPs can be scheduled through independent PDCCHs. Therefore, the terminal equipment needs to monitor the PDCCHs from different TRPs respectively. In some communication systems (such as NR systems), different TRPs can be distinguished by different CORESETs. For example, each CORESET may correspond to only one TRP, and different TRPs may use different CORESET groups to transmit PDCCH. Specifically, CORESETs in different CORESET groups can be distinguished by configuring different CORESET pool indexes (CORESETPoolIndex). Optionally, the CORESET pool index may also be called the CORESET group identifier. For CORESET without a CORESET pool index configured, the terminal device can assume that the value of the CORESET pool index is 0. Through the CORESET pool index parameter, the terminal device can assume that the data scheduled by the PDCCH in the CORESET with the same CORESET pool index comes from the same TRP. It can be understood that different TRPs are equivalent to different CORESET pool indexes.

For multi-TRP cooperative transmission based on multi-DCI, the terminal can use the following methods to perform ACK/NACK feedback on the downlink data transmitted by each TRP: independent HARQ-ACK feedback or joint HARQ-ACK feedback. If the terminal capabilities reported by the terminal device support these two feedback methods, the actual method used can be configured by the network device through RRC signaling. For example, the network device may configure independent HARQ-ACK feedback or joint HARQ-ACK feedback based on actual backhaul conditions between transmission points. In both feedback methods, the dynamic and semi-static codebook generation methods of ACK/NACK feedback need to be considered. For the independent feedback method, the resource division issue of the two PUCCHs also needs to be considered. The two feedback methods are described below.

Figure 3 is an example diagram of a joint HARQ-ACK feedback. The terminal device can use the same PUCCH resource to feed back ACK/NACK corresponding to data of different TRPs. As shown in Figure 3, the terminal device can transmit the ACK/NACK feedback of data respectively transmitted by two TRPs (including TRP1 and TRP2) through one of the TRPs. In an ideal backhaul scenario, the network device can be configured with a combined HARQ-ACK feedback method. In some implementations, similar to the provisions of some communication protocols (such as the NR system R15 protocol), if the HARQ-ACK resources of two TRPs are in the same time slot, the terminal device can use the HARQ-ACK resources of the PDSCH of the two TRPs. Bits are placed in a HARQ-ACK codebook and fed back through the same PUCCH resource. Correspondingly, if the HARQ-ACK resources of two TRPs are configured in different time slots, the terminal device can feed back the HARQ-ACK codebook of each TRP in an independent feedback manner.

Figure 4 is an example diagram of independent HARQ-ACK feedback. As shown in Figure 4, the terminal device can use independent PUCCH resources to feed back ACK/NACK corresponding to data of different TRPs. In some implementations, such as in the semi-static codebook specified by the R15 protocol, the size of the HARQ-ACK codebook is predefined or determined by parameters configured in RRC signaling. For example, it needs to be configured according to the high-layer downlink Determined by the collection of data reception times. In the semi-static codebook, the HARQ-ACK bits for each downlink transmission can be arranged in a predefined time domain and serving cell order. In some implementations, such as in the dynamic codebook specified by the R15 protocol, the size of the HARQ-ACK codebook changes dynamically with the actual PDSCH scheduling situation. Among them, the HARQ-ACK bits for each downlink transmission can be arranged according to the time domain sequence and the downlink assignment index (downlink assignment index, DAI) indication in the DCI. It can be understood that in multi-TRP transmission given multiple DCIs, if independent HARQ-ACK feedback is configured, the HARQ codebook of each TRP can still be independently generated according to the rules of related technologies (such as the provisions of NR system R15).

In a multi-TRP transmission scenario based on multi-DCI, a unified TCI architecture can also be supported. For example, in a multi-TRP transmission scenario based on multiple DCIs, the unified TCI status determination solution may include the following three optional technical solutions.

Option 1: Use existing TCI fields in DCI format 1_1/1_2 (with or without downstream allocation) associated with one of the CORESET pool index values to indicate a joint/ that is associated with the same CORESET pool index value. TCI status of downlink (DL)/uplink (UL).

It can be understood that, for option one, the DCI transmitted by a CORESET configured with a certain CORESET pool index may only indicate the TCI status associated with the same CORESET pool index. In other words, the DCI transmitted by a CORESET configured with a certain CORESET pool index may only indicate the TCI status of a signal or channel associated with the CORESET configured with the CORESET pool index. For example, the DCI of the CORESET transmission configured with the first CORESET pool index may only indicate the TCI status associated with the first CORESET pool index, and the DCI of the CORESET transmission configured with the second CORESET pool index may only indicate the TCI status associated with the second CORESET pool index. TCI status.

Option 2: Use the existing TCI field of any DCI format 1_1/1_2 (with or without downlink allocation) to indicate the TCI status of all joint/DL/UL.

It can be understood that, for option two, the DCI transmitted by CORESET configured with any CORESET pool index can indicate the TCI status of a signal or channel associated with CORESET of all CORESET pool indexes. For example, in the case of two CORESET pool indexes, the TCI field of each DCI can indicate the TCI status of the signal or channel that is associated with the CORESET of the two CORESET pool indexes. Or, for option two, the DCI transmitted by CORESET configured with any CORESET pool index can indicate the TCI status of a signal or channel associated with the CORESET of one or more CORESET pool indexes. In other words, the TCI field of a DCI can indicate the TCI status associated with one CORESET pool index, or can also indicate the TCI status associated with multiple CORESET pool indexes. For example, in the case of two CORESET pool indexes, the TCI field of the DCI may indicate the TCI status of a signal or channel associated with the CORESET of one or two CORESET pool indexes. Alternatively, the DCI associated with any CORESET pool index may only indicate the TCI status of the signal or channel associated with the CORESET of one of the CORESET pool indexes.

Option Three: Use an existing TCI field of DCI format 1_1/1_2 (with or without DL allocation) associated with one of the CORESET pool index values to indicate a federation/DL/UL associated with the same or a different CORESET pool index value TCI status.

It can be understood that for option three, the DCI transmitted by CORESET configured with one of the CORESET pool indexes can indicate the TCI status related to any CORESET pool index, but the DCI transmitted by CORESET configured with another CORESET pool index cannot be used. Indicates TCI status related to other CORESET pool indexes. Alternatively, for option three, the DCI of a CORESET transmission configured with one of the CORESET pool indexes can indicate the TCI status associated with the same or a different CORESET pool index. That is, the DCI transmitted by a CORESET configured with one of the CORESET pool indexes can indicate the TCI status associated with one CORESET pool index, or it can indicate the TCI status associated with multiple CORESET pool indexes configured with another CORESET pool index. The DCI transmitted by CORESET cannot be used to indicate the TCI status associated with different CORESET pool indexes. Or, for option three, a DCI configured with any CORESET pool index can indicate the TCI status associated with a CORESET pool index each time. It can indicate the TCI status associated with the same CORESET pool index, or it can indicate different CORESET pool indexes. Associated TCI status.

For the above three optional solutions, it can be understood that the TCI status of the signal or channel associated with the first CORESET configured with a CORESET pool index can be indicated by the DCI transmitted by the CORESET configured with the CORESET pool index. , can also be indicated by the DCI of a CORESET transmission configured with other CORESET pool indexes.

The applicant found that in the scenario of multiple TRP transmission based on multiple DCIs, the effective time of the TCI status indicated by different DCIs may be the same. The following is an example of the case where the TCI states indicated by multiple DCIs have the same effective time with reference to Figures 5 and 6.

As shown in Figure 5, both DCI0 and DCI1 can be used to indicate the TCI status of a signal or channel associated with CORESET configured with CORESET pool index 0 and/or CORESET pool index 1. DCI0 can be transmitted by CORESET configured with CORESET pool index 0 (also known as TRP transmission corresponding to CORESET pool index 0), DCI1 can be transmitted by CORESET configured with CORESET pool index 1 (also known as TRP transmission corresponding to CORESET pool index 1) corresponding TRP transmission). DCI0 and DCI1 can perform HARQ-ACK feedback through joint feedback. That is, the ACK feedback time of DCI0 and DCI is the same, so the effective time of the TCI status indicated by DCI0 and DCI1 can be the same.

As shown in Figure 6, both DCI0 and DCI1 can be used to indicate the TCI status of a signal or channel associated with CORESET configured with CORESET pool index 0 and/or CORESET pool index 1. DCI0 can be transmitted by a CORESET configured with CORESET pool index 0, and DCI1 can be transmitted by a CORESET configured with CORESET pool index 1. DCI0 and DCI1 can perform HARQ-ACK feedback through independent feedback. In this case, the feedback times of DCI0 and DCI1 can be the same or different. After independent feedback, the first time slot after more than or equal to Y time units is the same time slot. That is to say, the effective time of the TCI status indicated by DCI0 and DCI1 can be the same. Alternatively, Y time units can be 28 symbols or 2 time slots.

It should be noted that Figures 5 and 6 are only scene example diagrams provided by embodiments of the present application, and the method proposed by the present application can also be applied to other scenarios in which the effective time of the TCI status indicated by different DCIs is the same.

It can be understood that when the effective time of the TCI status indicated by different DCIs is the same, the terminal device and the network device will not be able to determine which DCI indication is based on to determine the TCI status, resulting in abnormal data transmission.

Figure 7 is a schematic flow chart of a communication method provided by an embodiment of the present application to solve the above problems. The method shown in Figure 7 can be executed by terminal devices and network devices. The method shown in Figure 7 may include step S710.

Step S710: The terminal device receives multiple DCIs. Accordingly, the network device can send multiple DCIs.

Multiple DCIs can be used to indicate TCI status. The situation in which multiple DCIs indicate TCI status can be based on the above-mentioned three optional technical solutions for indicating unified TCI status in the multi-TRP transmission scenario based on multiple DCIs.

Some or all of the plurality of DCIs may indicate the TCI status of the first signal or channel associated with the first CORESET configured with the first CORESET pool index. Wherein, the first signal or channel may be transmitted through the first CORESET. Alternatively, the first signal or channel may be scheduled by the signal or channel of the first CORESET transmission.

The first signal or channel may include at least one of PDCCH, PDSCH, PUSCH, SRS, PUCCH or CSI-RS. In some embodiments, the first signal or channel may be any signal or channel indicated by a unified TCI status. The PDCCH may be a PDCCH configured or associated with CORESET transmission of the first CORESET pool index. The PDSCH may be a DCI scheduled or activated PDSCH associated with the first CORESET pool index. The PUSCH may be a DCI scheduled or activated PUSCH associated with the first CORESET pool index. The PUCCH may be the PUCCH of the HARQ-ACK corresponding to the DCI associated with the first CORESET pool index. The CSI-RS may be a DCI-triggered aperiodic CSI-RS (AP CAI-RS) associated with the first CORESET pool index. The SRS may be a DCI-triggered aperiodic SRS (AP SRS) associated with the first CORESET pool index.

Some or all of the multiple DCIs (which may be the same as or different from the DCI indicating the first signal or channel) may indicate the TCI status of the signal or channel associated with the CORESET configured with the second CORESET pool index. For example, the plurality of DCIs may include a first DCI. In some implementations, the first DCI may indicate a TCI status of a signal or channel associated with the CORESET configured with the first CORESET pool index. In some implementations, the first DCI may indicate a TCI status of a signal or channel associated with the CORESET configured with the second CORESET pool index. In some implementations, the first DCI may simultaneously indicate the TCI status of the signal or channel associated with the CORESET configured with the first CORESET pool index and the signal or channel associated with the CORESET configured with the second CORESET pool index. TCI status.

Multiple DCIs may be transmitted by a CORESET configured with a first CORESET pool index and/or a CORESET configured with a second CORESET pool index. The first CORESET pool index can be different from the second CORESET pool index. That is to say, multiple DCIs can be used to implement the multiple TRP transmissions described above. For example, the plurality of DCIs may include a first DCI and a second DCI, and the first DCI and the second DCI may be transmitted by a CORESET configured with a first CORESET pool index and a CORESET configured with a second CORESET pool index, respectively. Alternatively, the first DCI and the second DCI may both be transmitted by a CORESET configured with a first CORESET pool index or a CORESET configured with a second CORESET pool index.

The plurality of DCIs may include the first DCI. The first DCI may be used to indicate the TCI status of a signal or channel transmitted by CORESET configured with a first CORESET pool index, and/or a signal or channel transmitted by CORESET with a CORESET pool index different from that configured with the first CORESET pool index. TCI status. That is to say, the first DCI may indicate the TCI status of a signal or channel associated with a CORESET configured with one CORESET pool index, or may indicate the TCI status of a signal or channel associated with a CORESET configured with a different CORESET pool index. state.

Some or all of the multiple DCIs may indicate TCI status according to a unified TCI architecture. For example, the plurality of DCIs may include a first DCI and a second DCI, and both the first DCI and the second DCI may indicate TCI status according to a unified TCI architecture.

This application does not limit the feedback methods of multiple DCIs. For example, multiple DCIs can feed back HARQ-ACK through joint feedback or independent feedback.

The TCI status of the first signal or channel may be determined based on the plurality of DCIs. Optionally, the effective time of the TCI status indicated by multiple DCIs may be the same. For example, the TCI status of the first signal or channel may be determined based on an indication of one DCI among the plurality of DCIs.

It can be seen from this that the present application can determine the TCI status of the first signal or channel based on multiple DCIs, so that the first signal or channel can be accurately transmitted according to the determined TCI status, thereby avoiding data transmission abnormalities. Optionally, the effective time of the TCI status indicated by multiple DCIs may be the same. That is to say, when the validity time of the TCI status indicated by multiple DCIs is the same, this application can determine the TCI status of the first signal or channel based on the multiple DCIs, thereby avoiding data transmission anomalies.

In some embodiments, the TCI status of the first signal or channel may be determined based on the first times of multiple DCIs. For example, the plurality of DCIs may include a first DCI. In the case where the first time of the first DCI is the latest of the first times of the plurality of DCIs, the TCI status of the first signal or channel may be determined based on the indication of the first DCI. Alternatively, in the case where the first time of the first DCI is the earliest of the first times of multiple DCIs, the TCI status of the first signal or channel may be determined based on the indication of the first DCI.

It can be understood that, if the first time of the first DCI is the latest among the first times of multiple DCIs, the first DCI may be the latest DCI among the multiple DCIs determined based on the first time. That is to say, the TCI status of the first channel or signal may be determined according to the latest DCI among the plurality of DCIs.

The first time may be a time related to the DCI corresponding to the first time. For example, the first time may be the listening time of PDCCH carrying DCI. Alternatively, the first time may be a start symbol or an end symbol in the time domain of the PDCCH carrying DCI. Alternatively, the first time may be the HARQ-ACK feedback time of DCI.

The first DCI may indicate the TCI status of the first signal or channel. For example, the first DCI may only indicate the TCI status of the signal or channel related to the CORESET configured with the first CORESET pool index. Alternatively, the first DCI may indicate the TCI status of a signal or channel associated with a CORESET configured with a first CORESET pool index and a signal or channel associated with a CORESET configured with a second CORESET pool index. In this case, the TCI state of the first signal or channel may be determined to be the state indicated by the first DCI. That is to say, the TCI status of the first signal or channel may be updated according to the TCI status indicated by the first DCI.

The first DCI may not indicate the TCI status of the first signal or channel. For example, the first DCI may only indicate the TCI status of the signal or channel that is associated with the CORESET configured with the second CORESET pool index. The signal or channel associated with the CORESET configured with the second CORESET pool index may not include the first signal or channel. In this case, it can be determined that the TCI state of the first signal or channel does not change. That is to say, the TCI status of the first signal or channel may not be updated according to the indication of the first DCI.

In some embodiments, where the first time of the first DCI is the latest of the first times of the plurality of DCIs, the first time of the first DCI and the first time of other DCIs of the plurality of DCIs may occur. Same situation, i.e. there is more than one DCI first time latest. For example, the first time of the first DCI may be the same as the first time of the second DCI, or the first time of the first DCI may be the same as the first time of the third DCI. The second DCI and the third DCI may be the same DCI. In this case, the TCI status of the first signal or channel may be further determined based on other information of the plurality of DCIs. Other information may include, for example, one or more of the second time and the first identification.

As an implementation manner, when the first time of the first DCI and the first time of the second DCI are the same, the TCI state of the first signal or channel may be determined based on the second times of the multiple DCIs. For example, the TCI status of the first signal or channel may be determined based on the latest DCI at the second time. In the case where the second time of the first DCI is the latest among the second times of the plurality of DCIs, the TCI status of the first signal or channel may be determined according to the indication of the first DCI. Alternatively, in the case where the second time of the second DCI is the latest among the second times of multiple DCIs, the TCI status of the first signal or channel may be determined according to the indication of the second DCI.

Optionally, when the first time is the listening moment of the PDCCH carrying DCI or the start symbol or end symbol in the time domain, the second time can be the Hybrid Automatic Repeat Request Confirmation HARQ-ACK feedback of DCI time; or, in the case where the first time is the HARQ-ACK feedback time of DCI, the second time may be the listening moment of the PDCCH carrying DCI or the start symbol or end symbol in the time domain.

If the second time of the first DCI and the second time of the second DCI are also the same, the TCI status of the first signal or channel may be determined according to the first identifiers associated with each of the plurality of DCIs. Wherein, the first identification can be determined according to the first rule. That is to say, the first rule may be related to the first identification associated with each of the plurality of DCIs.

This application does not limit the content of the first rule. For example, the first rule may include: in the case where the first identifier associated with the first DCI is the smallest among the first identifiers associated with each of the multiple DCI grids, the TCI status of the first signal or channel may be determined according to the indication of the first DCI. ; Or in the case where the first identifier associated with the first DCI is the largest among the first identifiers associated with each of multiple DCIs, the TCI status of the first signal or channel may be determined according to the indication of the first DCI.

The first rule may be configured in one or more of the following ways: preconfigured, configured through high-layer signaling, configured through physical layer signaling, or specified by a communication protocol. The content of the first rule can be configured in the above manner, and the first identifier related to the first rule can also be configured in the above manner.

The first identification may include one or more sub-identifications. For example, the first identifier may include one or more of the following identifiers: an identifier of CORESET, a CORESET pool index, an identifier of a carrier, and a search space identifier. The identifier of the CORESET may be the identifier of the CORESET that transmits the corresponding DCI. The CORESET pool index may be a CORESET pool index configured for transmitting CORESET corresponding to the DCI. The identifier of the carrier may be the identifier of the carrier that transmits the corresponding DCI. The search space identifier may be an identifier of the search space associated with the corresponding DCI.

When the first identifier includes multiple sub-identities, the minimum of the first identifier may be the smallest of any one of the first identifiers, and the maximum of the first identifier may be the largest of any of the multiple identifiers. For example, the plurality of identifications may include a first sub-identification and a second sub-identification. The first sub-identity associated with the first DCI is different from the first sub-identity associated with the fourth DCI, and/or the second sub-identity associated with the first DCI is different from the second sub-identity associated with the fourth DCI. When the first sub-identity associated with the first DCI is the smallest among the first sub-identities associated with each of the multiple DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI, If the second sub-identity associated with the first DCI is the smallest among the second sub-identities associated with multiple DCIs respectively, then the first identifier associated with the first DCI is the smallest among the first identifiers associated with multiple DCIs respectively, or if The second sub-identity associated with the fourth DCI is the smallest among the second sub-identities associated with each of the multiple DCIs, then the first identifier associated with the fourth DCI is the smallest among the first identifiers associated with each of the multiple DCIs. When the first sub-identity associated with the first DCI is the largest among the first sub-identities associated with each of the multiple DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI, If the second sub-identity associated with the first DCI is the largest among the second sub-identities associated with multiple DCIs respectively, then the first identifier associated with the first DCI is the largest among the first identifiers associated with multiple DCIs respectively, or if The second sub-identity associated with the fourth DCI is the largest among the second sub-identities associated with each of the multiple DCIs, then the first identifier associated with the fourth DCI is the largest among the first identifiers associated with each of the multiple DCIs.

It should be noted that the fourth DCI may be any DCI among multiple DCIs. The fourth DCI may be the same DCI as the second DCI or the third DCI.

In some embodiments, the TCI state of the first signal or channel may be determined directly according to the first rule, that is, the TCI state of the first signal or channel may not be determined according to the first time and the second time of the plurality of DCIs. The first identification may be determined according to the first rule described above.

In other embodiments, if the first time of the first DCI and the first time of the third DCI are the same, the TCI status of the first signal or channel may be further determined according to the first identifier. The first identification may be determined according to the first rule described above.

It should be noted that the plurality of DCIs may include a first DCI and a fifth DCI, and the first identifier associated with the first DCI and the first identifier associated with the fifth DCI may be different. In the case where the first identification includes multiple sub-identifications, one or more of the sub-identifications in the first identification associated with the first DCI and the first identification associated with the fifth DCI may be different. The fifth DCI may be the same DCI as the second DCI, third DCI or fourth DCI mentioned above.

According to the method described above, if the TCI state of the first signal or channel can be determined based on the TCI state indicated by the first DCI, multiple situations may be included. In some cases, the first DCI indicates the TCI state of the first signal or channel, then the TCI state of the first signal or channel may be the TCI state indicated by the first DCI. In some cases, the first DCI does not indicate the TCI status of the first signal or channel, then the TCI status of the first signal or channel may not be updated, that is, not changed. In some cases, the first DCI is a TCI status indicating the first signal or channel, then the TCI status of the first signal or channel may be determined according to one of the DCIs indicating the TCI status of the first signal or channel.

It can be understood that multiple DCIs may each be used to indicate the TCI status of the first signal or channel. That is, the TCI status of the first signal or channel may be selected from DCI indicating the TCI status of the first signal or channel. In this case, the TCI state of the first signal or channel may be one of the plurality of DCI indicated TCI states. The determination of the TCI status of the first signal or channel may be determined according to any method described above. For example, the TCI state of the first signal or channel may be a TCI state indicated by the latest DCI among the plurality of DCIs indicating the first signal or channel.

In some embodiments, multiple DCIs indicate the same TCI status for the same channel or signal. For example, the network device can control the TCI status of the TCI indicating the same channel or signal in the DCI that is effective at the same time to be the same. Accordingly, the terminal device may not expect different TCI states indicating the same channel or signal in DCI that are effective at the same time. That is to say, the network device and/or the terminal device can directly determine the TCI status of the first signal or channel according to the indication of any one of the multiple DCIs.

The communication method provided by this application will be further introduced below with reference to Embodiment 1 to Embodiment 9.

Embodiment 1

Figure 8 is an example diagram of a scenario where the TCI status takes effect at the same time. The method disclosed in Embodiment 1 can be applied to the scenario shown in Figure 8. The method disclosed in Embodiment 1 may include steps S810 to S840.

Step S810: The network device configures a unified TCI architecture with more than one joint/DL/UL TCI indication for the terminal, which is used to indicate multiple TRPs for sending and/or receiving signals or channels based on different TCI states.

Step S820: The network device performs TCI status indication through DCI sent by different TRPs. The instructions are shown in Figure 8. The terminal device performs independent HARQ-ACK feedback as shown in Figure 8 for the multiple DCIs (DCI0 and DCI1 in Figure 8) sent by the two TRPs.

Step S830: The terminal device determines the TCI state indicated by the use of time slot n based on the feedback time. Time slot n may be the effective time of the TCI state indicated by DCI0 and DCI1.

As shown in Figure 8, the effective time of the TCI status indicated by DCI0 and DCI1 is the same. In this case, the TCI status may be updated based on the DCI sent by the TRP corresponding to the latest feedback time. For example, in Figure 8, the HARQ-ACK feedback of TRP1 comes later, and the TCI state can be updated according to the TCI state indicated by DCI1 sent by TRP1.

Step S840: Starting from time slot n, the network device and/or the terminal device transmit and receive signals or channels based on the TCI status determined in step S830. Time slot n may be the first time slot that is greater than or equal to Y time units after the feedback time. Among them, Y time units can be 28 symbols or 2 time slots. The feedback time may be the time for ACK feedback of the TCI status indicated by TPR0 through DCI0. Alternatively, the feedback time may be the time for TPR1 to feedback the ACK of the TCI status indicated by DCI1. Alternatively, the feedback time may be the later of the time of ACK feedback of the TCI state indicated by TPR0 through DCI0 and the time of ACK feedback of the TCI state indicated by TPR1 through DCI1.

Embodiment 2

Figure 9 is an example diagram of a scenario where the TCI status takes effect at the same time. The method disclosed in Embodiment 2 can be applied to the scenario shown in Figure 9. The method disclosed in Embodiment 2 may include steps S910 to S940.

Step S910: The network device configures a unified TCI architecture with more than one joint/DL/UL TCI indication for the terminal, which is used to indicate multiple TRPs to send and/or receive signals or channels based on different TCI states.

Step S920: The network device performs TCI status indication through DCI sent by different TRPs. The instructions are shown in Figure 9. The terminal device performs independent HARQ-ACK feedback as shown in Figure 8 for the multiple DCIs (DCI0 and DCI1 in Figure 8) sent by the two TRPs. Alternatively, the terminal device may perform joint HARQ-ACK feedback on multiple DCIs.

Step S930: The terminal device determines the TCI state indicated by the use of time slot n based on the feedback time. Time slot n may be the effective time of the TCI state indicated by DCI0 and DCI1.

As shown in Figure 9, the effective time of the TCI status indicated by DCI0 and DCI1 is the same. In this case, the corresponding TCI status can be updated based on the latest DCI indication. For example, in Figure 9, the DCI0 indicated by TRP0 is the latest (that is, further back), then the TCI status can be updated according to the TCI status indicated by the DCI0 sent by TRP0.

Step S940: Starting from time slot n, the network device and/or the terminal device transmit and receive signals or channels based on the TCI status determined in step S930. Time slot n may be the first time slot that is greater than or equal to Y time units after the feedback time. Among them, Y time units can be 28 symbols or 2 time slots. The feedback time may be the time for ACK feedback of the TCI status indicated by TPR0 through DCI0. Alternatively, the feedback time may be the time for TPR1 to feedback the ACK of the TCI status indicated by DCI1. Alternatively, the feedback time may be the later of the time of ACK feedback of the TCI state indicated by TPR0 through DCI0 and the time of ACK feedback of the TCI state indicated by TPR1 through DCI1.

Embodiment 3

The method disclosed in Embodiment 3 can be applied to the scenario shown in Figure 8. The method disclosed in Embodiment 3 may include steps S1010 to S1040.

Step S1010: The network device configures a unified TCI architecture with more than one joint/DL/UL TCI indication for the terminal, which is used to indicate the transmission and/or reception of signals or channels based on different TCI states when multiple TRPs are used.

Step S1020: The network device performs TCI status indication through DCI sent by different TRPs. The instructions are shown in Figure 8. The terminal device performs independent HARQ-ACK feedback as shown in Figure 8 for the multiple DCIs (DCI0 and DCI1 in Figure 8) sent by the two TRPs.

Step S1030: The terminal device determines the TCI state indicated by the use of time slot n based on the feedback time. Time slot n may be the effective time of the TCI state indicated by DCI0 and DCI1.

As shown in Figure 8, the effective time of the TCI status indicated by DCI0 and DCI1 is the same. In this case, the corresponding TCI status may be updated based on the latest DCI indication. As shown in Figure 8, DCI0 and DCI1 are sent at the same time, so the TCI status can be determined according to the first rule. For example, the first rule may include one or more of the following: selecting a DCI corresponding to a smaller CORESET pool index, selecting a DCI corresponding to a smaller search space identifier, selecting a DCI corresponding to a smaller CORESET identifier, etc. The TCI status can be determined based on the selected DCI.

Step S1040: Starting from time slot n, the network device and/or the terminal device transmit and receive signals or channels based on the TCI status determined in step S1030. Time slot n may be the first time slot that is greater than or equal to Y time units after the feedback time. Among them, Y time units can be 28 symbols or 2 time slots. The feedback time may be the time for ACK feedback of the TCI status indicated by TPR0 through DCI0. Alternatively, the feedback time may be the time for TPR1 to feedback the ACK of the TCI status indicated by DCI1. Alternatively, the feedback time may be the later of the time of ACK feedback of the TCI state indicated by TPR0 through DCI0 and the time of ACK feedback of the TCI state indicated by TPR1 through DCI1.

Embodiment 4

Figure 10 is an example diagram of a scenario where the TCI status takes effect at the same time. The method disclosed in Embodiment 4 can be applied to the scenario shown in Figure 10. The method disclosed in Embodiment 4 may include steps S1110 to S1140.

Step S1110: The network device configures a unified TCI architecture with more than one joint/DL/UL TCI indication for the terminal, which is used to indicate multiple TRPs to send and/or receive signals or channels based on different TCI states.

Step S1120: The network device performs TCI status indication through DCI sent by different TRPs. The instructions are shown in Figure 10. The terminal device performs independent HARQ-ACK feedback as shown in Figure 10 for the multiple DCIs (DCI0~DCI3 in Figure 10) sent by the two TRPs.

Step S1130: The terminal device determines the TCI state indicated by the use of time slot n based on the feedback time. Time slot n may be the effective time of the TCI state indicated by DCI0 to DCI3.

As shown in Figure 10, the TCI states indicated by DCI0 to DCI3 have the same effective time. In this case, the corresponding TCI status can be updated based on the latest DCI indication. As shown in Figure 10, the DCI sent by TRP0 and the DCI sent by TRP1 are sent at the same time, so the TCI status can be determined according to the first rule. For example, the first rule may include one or more of the following: selecting a DCI corresponding to a smaller CORESET pool index, selecting a DCI corresponding to a smaller search space identifier, selecting a DCI corresponding to a smaller CORESET identifier, etc. The TCI status can be determined based on the selected DCI.

For example, in Embodiment 4, only the TCI status of TRP1 can be updated, because the TCI status of TRP1 is indicated by the latest DCI.

Step S1140: Starting from time slot n, the network device and/or the terminal device transmit and receive signals or channels based on the TCI status determined in step S1130. Time slot n may be the first time slot that is greater than or equal to Y time units after the feedback time. Among them, Y time units can be 28 symbols or 2 time slots. The feedback time may be the time for ACK feedback of the TCI status indicated by TPR0 through DCI0 and DCI1. Alternatively, the feedback time may be the time for TPR1 to feedback the ACK of the TCI status indicated by DCI2 and DCI3. Alternatively, the feedback time may be the later of the time of ACK feedback of the TCI state indicated by TPR0 through DCI0 and DCI1 and the time of ACK feedback of the TCI state indicated by TPR1 through DCI2 and DCI3.

Embodiment 5

The method disclosed in Embodiment 5 can be applied to the scenario shown in Figure 10. The method disclosed in Embodiment 5 may include steps S1210 to S1240.

Step S1210: The network device configures a unified TCI architecture with more than one joint/DL/UL TCI indication for the terminal, which is used to indicate the transmission and/or reception of signals or channels based on different TCI states when multiple TRPs are used.

Step S1220: The network device performs TCI status indication through DCI sent by different TRPs. The instructions are shown in Figure 10. The terminal device performs independent HARQ-ACK feedback as shown in Figure 10 for the multiple DCIs (DCI0~DCI3 in Figure 10) sent by the two TRPs.

Step S1230: The terminal device determines the TCI state indicated by the use of time slot n based on the feedback time. Time slot n may be the effective time of the TCI state indicated by DCI0 to DCI3.

As shown in Figure 10, the TCI states indicated by DCI0 to DCI3 have the same effective time. In this case, the TCI status may be updated based on the DCI sent by the TRP corresponding to the last fed back HARQ-ACK. As shown in Figure 10, the HARQ-ACK feedback for TRP1 is the latest and therefore can be updated based on the indication of the latest DCI of TRP1. For example, TRP1's TCI status can be updated only based on TRP1's latest DCI.

Step S1240: Starting from time slot n, the network device and/or the terminal device transmit and receive signals or channels based on the TCI status determined in step S1230. Time slot n may be the first time slot that is greater than or equal to Y time units after the feedback time. Among them, Y time units can be 28 symbols or 2 time slots. The feedback time may be the time for ACK feedback of the TCI status indicated by TPR0 through DCI0 and DCI1. Alternatively, the feedback time may be the time for TPR1 to feedback the ACK of the TCI status indicated by DCI2 and DCI3. Alternatively, the feedback time may be the later of the time of ACK feedback of the TCI state indicated by TPR0 through DCI0 and DCI1 and the time of ACK feedback of the TCI state indicated by TPR1 through DCI2 and DCI3.

Embodiment 6

Figure 11 is an example diagram of a scenario where the TCI status takes effect at the same time. The method disclosed in Embodiment 6 can be applied to the scenario shown in Figure 11. The method disclosed in Embodiment 6 may include steps S1310 to S1340.

Step S1310: The network device configures a unified TCI architecture with more than one joint/DL/UL TCI indication for the terminal, which is used to indicate the transmission and/or reception of signals or channels based on different TCI states when multiple TRPs are used.

Step S1320: The network device performs TCI status indication through DCI sent by different TRPs. The instructions are shown in Figure 11. The terminal device performs independent HARQ-ACK feedback as shown in Figure 11 for the multiple DCIs (DCI0~DCI3 in Figure 11) sent by the two TRPs.

Step S1330: The terminal device determines the TCI state indicated by the use of time slot n based on the feedback time. Time slot n may be the effective time of the TCI state indicated by DCI0 to DCI3.

As shown in Figure 11, the TCI states indicated by DCI0 to DCI3 have the same effective time. In this case, the TCI status may be updated based on the DCI sent by the TRP corresponding to the last fed back HARQ-ACK. As shown in Figure 11, the HARQ-ACK feedback for TRP1 is the latest and therefore can be updated based on the indication of the DCI of TRP1. As shown in Figure 11, HARQ-ACK feedback contains the schedule of multiple DCIs. These DCIs indicate the status of TRP0 and TRP1, and can be updated based on the DCI2 of TRP1 indicating the TCI status of TRP0 and the DCI3 of TRP1 indicating the TCI status of TRP1.

Step S1340: Starting from time slot n, the network device and/or transmits and receives signals or channels based on the TCI status determined in step S1330. Time slot n may be the first time slot that is greater than or equal to Y time units after the feedback time. Among them, Y time units can be 28 symbols or 2 time slots. The feedback time may be the time for ACK feedback of the TCI status indicated by TPR0 through DCI0 and DCI1. Alternatively, the feedback time may be the time for TPR1 to feedback the ACK of the TCI status indicated by DCI2 and DCI3. Alternatively, the feedback time may be the later of the time of ACK feedback of the TCI state indicated by TPR0 through DCI0 and DCI1 and the time of ACK feedback of the TCI state indicated by TPR1 through DCI2 and DCI3.

Embodiment 7

Figure 12 is an example diagram of a scenario where the TCI status takes effect at the same time. The method disclosed in Embodiment 7 can be applied to the scenario shown in Figure 12. The method disclosed in Embodiment 7 may include steps S1410 to S1440.

Step S1410: The network device configures a unified TCI architecture with more than one joint/DL/UL TCI indication for the terminal, which is used to indicate the transmission and/or reception of signals or channels based on different TCI states when multiple TRPs are used.

Step S1420: The network device performs TCI status indication through DCI sent by different TRPs. The instructions are shown in Figure 12. The terminal device performs independent HARQ-ACK feedback as shown in Figure 12 for the multiple DCIs (DCI0~DCI3 in Figure 12) sent by the two TRPs.

Step S1430: The terminal device determines the TCI state indicated by the use of time slot n based on the feedback time. Time slot n may be the effective time of the TCI state indicated by DCI0 to DCI3.

As shown in Figure 12, the TCI states indicated by DCI0 to DCI3 have the same effective time. In this case, the TCI status of TRP0 and TRP1 can be updated respectively based on the latest DCI indication. As shown in Figure 12, the TCI status can be updated based on DCI1 sent by TRP0 indicating the TCI status of TRP1 and DCI2 sent by TRP1 indicating the TCI status of TRP0.

Step S1440: Starting from time slot n, the network device and/or the terminal device transmit and receive signals or channels based on the TCI status determined in step S1430. Time slot n may be the first time slot that is greater than or equal to Y time units after the feedback time. Among them, Y time units can be 28 symbols or 2 time slots. The feedback time may be the time for ACK feedback of the TCI status indicated by TPR0 through DCI0 and DCI1. Alternatively, the feedback time may be the time for TPR1 to feedback the ACK of the TCI status indicated by DCI2 and DCI3. Alternatively, the feedback time may be the later of the time of ACK feedback of the TCI state indicated by TPR0 through DCI0 and DCI1 and the time of ACK feedback of the TCI state indicated by TPR1 through DCI2 and DCI3.

Embodiment 8

Figure 13 is an example diagram of a scenario where the TCI status takes effect at the same time. The method disclosed in Embodiment 8 can be applied to the scenario shown in Figure 13. The method disclosed in Embodiment 8 may include steps S1510 to S1540.

Step S1510: The network device configures a unified TCI architecture with more than one joint/DL/UL TCI indication for the terminal, which is used to indicate the transmission and/or reception of signals or channels based on different TCI states when multiple TRPs are used.

Step S1520: The network device performs TCI status indication through DCI sent by different TRPs. The instructions are shown in Figure 13. The terminal device performs independent HARQ-ACK feedback as shown in Figure 13 for the multiple DCIs sent by the two TRPs (DCI0 and DCI1 in Figure 12).

Step S1530: The terminal device determines the TCI state indicated by the use of time slot n based on the feedback time. Time slot n may be the effective time of the TCI state indicated by DCI0 and DCI1.

As shown in Figure 13, the effective time of the TCI status indicated by DCI0 and DCI1 is the same. In this case, the TCI status of TRP0 and TRP1 can be updated respectively based on the latest DCI indication. As shown in Figure 13, the TCI status of TRP0 may be indicated based on the DCI0 sent by TRP0. As shown in Figure 13, both TRP0 and TRP1 indicate the TCI status of TRP1 at the same time. In this case, the TCI status update of TRP1 can be implemented according to the first rule. For example, the first rule may include one or more of the following: selecting a DCI corresponding to a smaller CORESET pool index, selecting a DCI corresponding to a smaller search space identifier, selecting a DCI corresponding to a smaller CORESET identifier, etc. The TCI status can be determined based on the selected DCI.

Step S1540: Starting from time slot n, the network device and/or the terminal device transmit and receive signals or channels based on the TCI status determined in step S1530. Time slot n may be the first time slot that is greater than or equal to Y time units after the feedback time. Among them, Y time units can be 28 symbols or 2 time slots. The feedback time may be the time for ACK feedback of the TCI status indicated by TPR0 through DCI0. Alternatively, the feedback time may be the time for TPR1 to feedback the ACK of the TCI status indicated by DCI1. Alternatively, the feedback time may be the later of the time when TPR0 feeds back the ACK of the TCI status indicated by DCI0 and the time when TPR1 feeds back the ACK of the TCI status indicated by DCI1.

Embodiment 9

The method disclosed in Embodiment 9 can be applied to the scenario shown in Figure 13. The method disclosed in Embodiment 9 may include steps S1610 to S1640.

Step S1610: The network device configures a unified TCI architecture with more than one joint/DL/UL TCI indication for the terminal, which is used to indicate the transmission and/or reception of signals or channels based on different TCI states when multiple TRPs are used.

Step S1620: The network device performs TCI status indication through DCI sent by different TRPs. The instructions are shown in Figure 13. The terminal device performs independent HARQ-ACK feedback as shown in Figure 13 for the multiple DCIs (DCI0 and DCI1 in Figure 13) sent by the two TRPs.

Step S1630: The terminal device determines the TCI state indicated by the use of time slot n based on the feedback time. Time slot n may be the effective time of the TCI state indicated by DCI0 and DCI1.

As shown in Figure 13, the effective time of the TCI status indicated by DCI0 and DCI1 is the same. In this case, the TCI status of TRP0 and TRP1 can be updated respectively based on the latest DCI indication. As shown in Figure 13, the TCI status of TRP0 can be updated based on the DCI0 sent by TRP0. Both TRP0 and TRP1 indicate the TCI status of TRP1 at the same time. The terminal device may not expect that the TCI status of TRP1 indicated by TRP0 is different from the TCI status of TRP1 indicated by TRP1.

Step S1640: Starting from time slot n, the network device and/or the terminal device transmit and receive signals or channels based on the TCI status determined in step S1630. Time slot n may be the first time slot that is greater than or equal to Y time units after the feedback time. Among them, Y time units can be 28 symbols or 2 time slots. The feedback time may be the time for ACK feedback of the TCI status indicated by TPR0 through DCI0. Alternatively, the feedback time may be the time for TPR1 to feedback the ACK of the TCI status indicated by DCI1. Alternatively, the feedback time may be the later of the time of ACK feedback of the TCI state indicated by TPR0 through DCI0 and the time of ACK feedback of the TCI state indicated by TPR1 through DCI1.

The method embodiments of the present application are described in detail above with reference to FIGS. 1 to 13 , and the device embodiments of the present application are described in detail below with reference to FIGS. 14 to 16 . It should be understood that the description of the method embodiments corresponds to the description of the device embodiments. Therefore, the parts not described in detail can be referred to the previous method embodiments.

Figure 14 is a schematic structural diagram of a terminal device 1400 provided by an embodiment of the present application. The terminal device 1400 may include a receiving unit 1410.

The receiving unit 1410 is configured to receive a plurality of downlink control information DCI, part or all of the plurality of DCI indicating the transmission configuration of the first signal or channel associated with the first CORESET configured with the first control resource set CORESET pool index. Indicate TCI status; wherein, the TCI status of the first signal or channel is determined according to the plurality of DCIs, the plurality of DCIs all indicate the TCI status according to a unified TCI architecture, and the plurality of DCIs are configured with the third CORESET indexed by one CORESET pool and/or CORESET transport configured with a second CORESET pool index.

Optionally, the plurality of DCIs include a first DCI, and the determination of the TCI status of the first signal or channel based on the plurality of DCIs includes: at a first time of the first DCI, the TCI status of the plurality of DCIs is In the latest case of the first time, the TCI status of the first signal or channel is determined according to the indication of the first DCI.

Optionally, the first time includes: the listening moment of the physical downlink control channel PDCCH carrying DCI or the start symbol or end symbol in the time domain; or the hybrid automatic repeat request confirmation HARQ-ACK feedback time of DCI .

Optionally, the plurality of DCIs further include a second DCI, and determining the TCI status of the first signal or channel according to the plurality of DCIs further includes: at the first time of the first DCI and the second If the first times of the DCIs are the same, the TCI state of the first signal or channel is determined based on the second times of the multiple DCIs.

Optionally, determining the TCI status of the first signal or channel according to the second time of the plurality of DCIs includes: the second time of the first DCI is the latest among the second times of the plurality of DCIs. In the case of , the TCI status of the first signal or channel is determined according to the indication of the first DCI; or the second time of the second DCI is the latest among the second times of the plurality of DCIs. Under this condition, the TCI status of the first signal or channel is determined according to the indication of the second DCI.

Optionally, when the first time is the listening moment of the PDCCH carrying the DCI or the starting symbol or the end symbol in the time domain, the second time is the HARQ-ACK of the DCI Feedback time; or in the case where the first time is the HARQ-ACK feedback time of the DCI, the second time is the listening moment of the PDCCH carrying the DCI or the starting symbol in the time domain or end symbol.

Optionally, the plurality of DCIs further include a third DCI, and determining the TCI status of the first signal or channel according to the plurality of DCIs further includes: at the first time of the first DCI and the third When the first time of DCI is the same, the TCI status of the first signal or channel is determined according to the first identifier, and the first identifier is determined according to the first rule.

Optionally, determining the TCI status of the first signal or channel based on the plurality of DCIs further includes: when the second time of the first DCI and the second time of the second DCI are the same, the The TCI status of the first signal or channel is determined according to a first identifier, and the first identifier is determined according to a first rule.

Optionally, determining the TCI status of the first signal or channel based on the plurality of DCIs includes: determining the TCI status of the first signal or channel based on a first identification, and the first identification is determined based on a first rule. of.

Optionally, the first rule includes: when the first identifier associated with the first DCI is the smallest among the first identifiers associated with each of the multiple DCIs, the TCI status of the first signal or channel Determined according to the indication of the first DCI; or in the case that the first identifier associated with the first DCI is the largest among the first identifiers associated with each of the multiple DCIs, the TCI status of the first signal or channel Determined according to the indication of the first DCI.

Optionally, the plurality of DCIs also include a fourth DCI, the first identification includes a first sub-identification and a second sub-identification, and the first sub-identification associated with the first DCI is each of the plurality of DCIs. The smallest of the associated first sub-identifiers, and the first sub-identifier associated with the first DCI is the same as the first sub-identifier associated with the fourth DCI, if the second sub-identifier associated with the first DCI If the identifier is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identifier associated with the first DCI is the smallest among the first identifiers associated with each of the multiple DCIs; or in the third The first sub-identity associated with a DCI is the smallest among the first sub-identities associated with each of the plurality of DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI. In the case of , if the second sub-identity associated with the fourth DCI is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the fourth DCI is the smallest one among the plurality of DCIs. The smallest among the first identifiers respectively associated; or the first sub-identifier associated with the first DCI is the largest among the first sub-identifiers respectively associated with the plurality of DCIs, and the first sub-identifier associated with the first DCI In the case where the sub-identity is the same as the first sub-identity associated with the fourth DCI, if the second sub-identity associated with the first DCI is the largest among the second sub-identities associated with each of the plurality of DCIs, then the The first identifier associated with the first DCI is the largest among the first identifiers associated with each of the plurality of DCIs; or the first sub-identity associated with the first DCI is the first sub-identity associated with each of the multiple DCIs. The largest among the identifiers, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI, if the second sub-identity associated with the fourth DCI is the multiple If the second sub-identifier associated with each of the DCIs is the largest, then the first identifier associated with the fourth DCI is the largest of the first identifiers associated with the multiple DCIs.

Optionally, the first rule is configured in one or more of the following ways: preconfigured, configured through high-layer signaling, configured through physical layer signaling, or specified through a communication protocol.

Optionally, the TCI states of the same signal or channel indicated by the multiple DCIs are the same.

Optionally, determining the TCI status of the first signal or channel according to the indication of the first DCI includes:

In the case where the first DCI indicates the TCI state of the first signal or channel, the TCI state of the first signal or channel is the TCI state indicated by the first DCI.

Optionally, determining the TCI status of the first signal or channel based on the indication of the first DCI includes: in the case where the first DCI does not indicate the TCI status of the first signal or channel, the first The TCI status of a signal or channel does not change.

Optionally, in the case where the plurality of DCIs all indicate the TCI status of the first signal or channel, determining the TCI status of the first signal or channel according to the plurality of DCIs includes: the first The TCI state of the signal or channel is one of the TCI states indicated by the plurality of DCIs.

Optionally, the plurality of DCIs include a first DCI indicating a TCI status of a signal or channel associated with a CORESET configured with the first CORESET pool index; and/or, the The first DCI indicates the TCI status of a signal or channel associated with a COREST configured with a CORESET pool index different from the first CORESET pool index.

Optionally, the plurality of DCIs include a first DCI and a fifth DCI, and a first identifier associated with the first DCI and a first identifier associated with the fifth DCI are different.

Optionally, the first identifier includes one or more of the following identifiers: an identifier of CORESET; a CORESET pool index; an identifier of a carrier; and a search space identifier.

Optionally, the first signal or channel includes at least one of the following: PDCCH, physical downlink shared channel PDSCH, physical uplink shared channel PUSCH, physical uplink control channel PUCCH, channel state information measurement reference signal CSI-RS, sounding reference signal SRS.

Optionally, the effective time of the TCI status indicated in the multiple DCIs is the same.

Figure 15 is a schematic structural diagram of a network device 1500 provided by an embodiment of the present application. Network device 1500 may include a sending unit 1510.

The sending unit 1510 is configured to send a plurality of downlink control information DCI, part or all of the plurality of DCI indicating the transmission configuration of the first signal or channel associated with the first CORESET configured with the first control resource set CORESET pool index. Indicate TCI status; wherein, the TCI status of the first signal or channel is determined according to the plurality of DCIs, the plurality of DCIs all indicate the TCI status according to a unified TCI architecture, and the plurality of DCIs are configured with the third CORESET indexed by one CORESET pool and/or CORESET transport configured with a second CORESET pool index.

Optionally, determining the TCI status of the first signal or channel according to the indication of the first DCI includes: in the case that the first DCI indicates the TCI status of the first signal or channel, the first The TCI state of a signal or channel is the TCI state indicated by the first DCI.

Optionally, the plurality of DCIs include a first DCI indicating a TCI status of a signal or channel associated with a CORESET configured with the first CORESET pool index; and/or the third DCI. A DCI indicates the TCI status of a signal or channel associated with a COREST configured with a CORESET pool index different from the first CORESET pool index.

Figure 16 is a schematic structural diagram of a communication device according to an embodiment of the present application. The dashed line in Figure 16 indicates that the unit or module is optional. The device 1600 can be used to implement the method described in the above method embodiment. Device 1600 may be a chip, terminal device or network device.

Apparatus 1600 may include one or more processors 1610. The processor 1610 can support the device 1600 to implement the method described in the foregoing method embodiments. The processor 1610 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor can also be another general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or an off-the-shelf programmable gate array (FPGA) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

Apparatus 1600 may also include one or more memories 1620. The memory 1620 stores a program, which can be executed by the processor 1610, so that the processor 1610 executes the method described in the foregoing method embodiment. The memory 1620 may be independent of the processor 1610 or integrated in the processor 1610.

Apparatus 1600 may also include a transceiver 1630. Processor 1610 may communicate with other devices or chips through transceiver 1630. For example, the processor 1610 can transmit and receive data with other devices or chips through the transceiver 1630.

An embodiment of the present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied in the terminal or network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal or network device in various embodiments of the present application.

An embodiment of the present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied in the terminal or network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal or network device in various embodiments of the present application.

An embodiment of the present application also provides a computer program. The computer program can be applied to the terminal or network device provided by the embodiments of the present application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of the present application.

It should be understood that the terms "system" and "network" may be used interchangeably in this application. In addition, the terms used in this application are only used to explain specific embodiments of the application and are not intended to limit the application. The terms “first”, “second”, “third” and “fourth” in the description, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific sequence. . Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

In the embodiments of this application, the "instruction" mentioned may be a direct instruction, an indirect instruction, or an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.

In the embodiment of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B only based on A. B can also be determined based on A and/or other information.

In the embodiments of this application, the term "correspondence" can mean that there is a direct correspondence or indirect correspondence between the two, or it can also mean that there is an association between the two, or it can also mean indicating and being instructed, configuring and being configured, etc. relation.

In the embodiment of this application, "predefinition" or "preconfiguration" can be achieved by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol.

In the embodiment of this application, the "protocol" may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this.

The term "and/or" in the embodiment of this application is only an association relationship describing associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, and A and B exist simultaneously. , there are three situations of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

In the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be determined by the implementation process of the embodiments of the present application. constitute any limitation.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center integrated with one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVD)) or semiconductor media (e.g., solid state disks (SSD) )wait.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A communication method, characterized in that the method includes:

The terminal equipment receives a plurality of downlink control information DCI, and part or all of the plurality of DCI indicates the transmission configuration indication TCI status of the first signal or channel associated with the first CORESET configured with the first control resource set CORESET pool index. ;

Wherein, the TCI status of the first signal or channel is determined according to the plurality of DCIs, the plurality of DCIs all indicate the TCI status according to a unified TCI architecture, and the plurality of DCIs are configured with the first CORESET pool index. CORESET and/or configure the CORESET transfer with a second CORESET pool index.
The method of claim 1, wherein the plurality of DCIs include a first DCI, and determining the TCI status of the first signal or channel according to the plurality of DCIs includes:

In the case where the first time of the first DCI is the latest among the first times of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI.
The method of claim 2, wherein the first time includes:

The listening time of the physical downlink control channel PDCCH carrying DCI or the start symbol or end symbol in the time domain; or

DCI's Hybrid Automatic Repeat Request Acknowledgment HARQ-ACK feedback time.
The method according to claim 2 or 3, wherein the plurality of DCIs further includes a second DCI, and determining the TCI status of the first signal or channel based on the plurality of DCIs further includes:

In the case where the first time of the first DCI and the first time of the second DCI are the same, the TCI state of the first signal or channel is determined based on the second time of the plurality of DCIs.
The method of claim 4, wherein determining the TCI status of the first signal or channel based on the second time of the plurality of DCIs includes:

In the case where the second time of the first DCI is the latest of the second times of the plurality of DCIs, the TCI status of the first signal or channel is determined based on the indication of the first DCI; or

In the case where the second time of the second DCI is the latest among the second times of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the second DCI.
The method according to claim 4 or 5, characterized in that,

In the case where the first time is the listening moment of the PDCCH carrying the DCI or the start symbol or end symbol in the time domain, the second time is the HARQ-ACK feedback time of the DCI; or

When the first time is the HARQ-ACK feedback time of the DCI, the second time is the listening time of the PDCCH carrying the DCI or the start symbol or end symbol in the time domain.
The method according to claim 2 or 3, wherein the plurality of DCIs further include a third DCI, and determining the TCI status of the first signal or channel based on the plurality of DCIs further includes:

When the first time of the first DCI and the first time of the third DCI are the same, the TCI status of the first signal or channel is determined based on a first identifier, and the first identifier is determined based on the first The rules are determined.
The method according to any one of claims 4-6, characterized in that determining the TCI status of the first signal or channel based on the plurality of DCIs further includes:

When the second time of the first DCI and the second time of the second DCI are the same, the TCI status of the first signal or channel is determined based on a first identification, and the first identification is based on the first The rules are determined.
The method of claim 1, wherein determining the TCI status of the first signal or channel based on the plurality of DCIs includes:

The TCI status of the first signal or channel is determined according to a first identifier, and the first identifier is determined according to a first rule.
The method according to any one of claims 7-9, characterized in that the first rule includes:

In the case where the first identifier associated with the first DCI is the smallest of the first identifiers associated with each of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI; or

In the case where the first identifier associated with the first DCI is the largest among the first identifiers associated with each of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI.
The method of claim 10, wherein the plurality of DCIs further include a fourth DCI, and the first identification includes a first sub-identification and a second sub-identification,

The first sub-identifier associated with the first DCI is the smallest among the first sub-identifiers associated with each of the plurality of DCIs, and the first sub-identifier associated with the first DCI is the same as the first sub-identifier associated with the fourth DCI. In the case where the sub-identities are the same, if the second sub-identity associated with the first DCI is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identifier associated with the first DCI is the smallest one. The smallest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identifier associated with the first DCI is the smallest among the first sub-identifiers associated with each of the plurality of DCIs, and the first sub-identifier associated with the first DCI is the same as the first sub-identifier associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the fourth DCI is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the fourth DCI is the smallest one. The smallest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identity associated with the first DCI is the largest among the first sub-identities associated with each of the plurality of DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the first DCI is the largest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the first DCI is the largest one. The largest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identity associated with the first DCI is the largest among the first sub-identities associated with each of the plurality of DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the fourth DCI is the largest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the fourth DCI is the largest one. The largest of the first identifiers associated with each of the multiple DCIs.
The method according to claim 10 or 11, characterized in that the first rule is configured in one or more of the following ways:

Preconfigured, configured through high-level signaling, configured through physical layer signaling, and specified through communication protocols.
The method according to any one of claims 1 to 12, characterized in that the TCI states of the same signal or channel indicated by the plurality of DCIs are the same.
The method according to any one of claims 2-8 or 10-12, characterized in that determining the TCI status of the first signal or channel according to the indication of the first DCI includes:

In the case where the first DCI indicates the TCI state of the first signal or channel, the TCI state of the first signal or channel is the TCI state indicated by the first DCI.
The method according to any one of claims 2-8 or 10-12, characterized in that determining the TCI status of the first signal or channel according to the indication of the first DCI includes:

In the case where the first DCI does not indicate the TCI status of the first signal or channel, the TCI status of the first signal or channel does not change.
The method according to any one of claims 1-14, characterized in that, in the case where the plurality of DCIs all indicate the TCI status of the first signal or channel, the first signal or channel The TCI status is determined based on the multiple DCIs including:

The TCI state of the first signal or channel is one of the TCI states indicated by the plurality of DCIs.
The method according to any one of claims 1-16, characterized in that the plurality of DCIs include a first DCI,

The first DCI indicates the TCI status of a signal or channel associated with the CORESET configured with the first CORESET pool index; and/or

The first DCI indicates the TCI status of a signal or channel associated with a COREST configured with a CORESET pool index different from the first CORESET pool index.
The method according to any one of claims 1-17, wherein the plurality of DCIs include a first DCI and a fifth DCI, and the first identifier associated with the first DCI and the fifth DCI are associated with The first logo is different.
The method according to any one of claims 7-12 or 18, characterized in that the first identification includes one or more of the following identifications:

CORESET’s logo;

CORESET pool index;

The identification of the carrier;

Search space identifier.
The method according to any one of claims 1-19, characterized in that the first signal or channel includes at least one of the following:

PDCCH, physical downlink shared channel PDSCH, physical uplink shared channel PUSCH, physical uplink control channel PUCCH, channel state information measurement reference signal CSI-RS, and sounding reference signal SRS.
The method according to any one of claims 1 to 20, characterized in that the effective time of the TCI status indicated in the plurality of DCIs is the same.
A communication method, characterized in that the method includes:

The network device sends multiple downlink control information DCIs, and some or all of the multiple DCIs indicate the transmission configuration indication TCI status of the first signal or channel associated with the first CORESET configured with the first control resource set CORESET pool index. ;

Wherein, the TCI status of the first signal or channel is determined according to the plurality of DCIs, the plurality of DCIs all indicate the TCI status according to a unified TCI architecture, and the plurality of DCIs are configured with the first CORESET pool index. CORESET and/or configure the CORESET transfer with a second CORESET pool index.
The method of claim 22, wherein the plurality of DCIs include a first DCI, and determining the TCI status of the first signal or channel according to the plurality of DCIs includes:

In the case where the first time of the first DCI is the latest among the first times of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI.
The method of claim 23, wherein the first time includes:

The listening time of the physical downlink control channel PDCCH carrying DCI or the start symbol or end symbol in the time domain; or

DCI's Hybrid Automatic Repeat Request Acknowledgment HARQ-ACK feedback time.
The method according to claim 23 or 24, wherein the plurality of DCIs further includes a second DCI, and determining the TCI status of the first signal or channel based on the plurality of DCIs further includes:

In the case where the first time of the first DCI and the first time of the second DCI are the same, the TCI state of the first signal or channel is determined based on the second time of the plurality of DCIs.
The method of claim 25, wherein determining the TCI status of the first signal or channel based on the second time of the plurality of DCIs includes:

In the case where the second time of the first DCI is the latest of the second times of the plurality of DCIs, the TCI status of the first signal or channel is determined based on the indication of the first DCI; or

In the case where the second time of the second DCI is the latest among the second times of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the second DCI.
The method according to claim 25 or 26, characterized in that,

In the case where the first time is the listening moment of the PDCCH carrying the DCI or the start symbol or end symbol in the time domain, the second time is the HARQ-ACK feedback time of the DCI; or

When the first time is the HARQ-ACK feedback time of the DCI, the second time is the listening time of the PDCCH carrying the DCI or the start symbol or end symbol in the time domain.
The method according to claim 23 or 24, wherein the plurality of DCIs further includes a third DCI, and determining the TCI status of the first signal or channel based on the plurality of DCIs further includes:

When the first time of the first DCI and the first time of the third DCI are the same, the TCI status of the first signal or channel is determined based on a first identifier, and the first identifier is determined based on the first The rules are determined.
The method according to any one of claims 25-27, wherein determining the TCI status of the first signal or channel based on the plurality of DCIs further includes:

When the second time of the first DCI and the second time of the second DCI are the same, the TCI status of the first signal or channel is determined based on a first identification, and the first identification is based on the first The rules are determined.
The method of claim 22, wherein determining the TCI status of the first signal or channel based on the plurality of DCIs includes:

The TCI status of the first signal or channel is determined according to a first identifier, and the first identifier is determined according to a first rule.
The method according to any one of claims 28-30, characterized in that the first rule includes:

In the case where the first identifier associated with the first DCI is the smallest of the first identifiers associated with each of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI; or

In the case where the first identifier associated with the first DCI is the largest among the first identifiers associated with each of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI.
The method of claim 31, wherein the plurality of DCIs further include a fourth DCI, and the first identification includes a first sub-identification and a second sub-identification,

The first sub-identifier associated with the first DCI is the smallest among the first sub-identifiers associated with each of the plurality of DCIs, and the first sub-identifier associated with the first DCI is the same as the first sub-identifier associated with the fourth DCI. In the case where the sub-identities are the same, if the second sub-identity associated with the first DCI is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identifier associated with the first DCI is the smallest one. The smallest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identifier associated with the first DCI is the smallest among the first sub-identifiers associated with each of the plurality of DCIs, and the first sub-identifier associated with the first DCI is the same as the first sub-identifier associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the fourth DCI is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the fourth DCI is the smallest one. The smallest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identity associated with the first DCI is the largest among the first sub-identities associated with each of the plurality of DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the first DCI is the largest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the first DCI is the largest one. The largest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identity associated with the first DCI is the largest among the first sub-identities associated with each of the plurality of DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the fourth DCI is the largest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the fourth DCI is the largest one. The largest of the first identifiers associated with each of the multiple DCIs.
The method according to claim 31 or 32, characterized in that the first rule is configured in one or more of the following ways:

Preconfigured, configured through high-level signaling, configured through physical layer signaling, and specified through communication protocols.
The method according to any one of claims 22 to 33, characterized in that the TCI states of the same signal or channel indicated by the plurality of DCIs are the same.
The method according to any one of claims 23-29 or 31-33, characterized in that determining the TCI status of the first signal or channel according to the indication of the first DCI includes:

In the case where the first DCI indicates the TCI state of the first signal or channel, the TCI state of the first signal or channel is the TCI state indicated by the first DCI.
The method according to any one of claims 23-29 or 31-33, characterized in that determining the TCI status of the first signal or channel according to the indication of the first DCI includes:

In the case where the first DCI does not indicate the TCI status of the first signal or channel, the TCI status of the first signal or channel does not change.
The method according to any one of claims 22 to 35, characterized in that, in the case where the plurality of DCIs all indicate the TCI status of the first signal or channel, the first signal or channel The TCI status is determined based on the multiple DCIs including:

The TCI state of the first signal or channel is one of the TCI states indicated by the plurality of DCIs.
The method according to any one of claims 22-37, characterized in that the plurality of DCIs include a first DCI,

The first DCI indicates the TCI status of a signal or channel associated with the CORESET configured with the first CORESET pool index; and/or

The first DCI indicates the TCI status of a signal or channel associated with a COREST configured with a CORESET pool index different from the first CORESET pool index.
The method according to any one of claims 22 to 38, wherein the plurality of DCIs include a first DCI and a fifth DCI, and the first identifier associated with the first DCI and the fifth DCI are associated with The first logo is different.
The method according to any one of claims 28-33 or 39, characterized in that the first identification includes one or more of the following identifications:

CORESET’s logo;

CORESET pool index;

The identification of the carrier;

Search space identifier.
The method according to any one of claims 22-40, characterized in that the first signal or channel includes at least one of the following:

PDCCH, physical downlink shared channel PDSCH, physical uplink shared channel PUSCH, physical uplink control channel PUCCH, channel state information measurement reference signal CSI-RS, and sounding reference signal SRS.
The method according to any one of claims 22 to 41, characterized in that the effective time of the TCI status indicated in the plurality of DCIs is the same.
A terminal device, characterized in that the terminal device includes:

A receiving unit configured to receive a plurality of downlink control information DCIs, part or all of the plurality of DCIs indicating a transmission configuration of a first signal or channel associated with a first CORESET configured with a first control resource set CORESET pool index. Indicate TCI status;

Wherein, the TCI status of the first signal or channel is determined according to the plurality of DCIs, the plurality of DCIs all indicate the TCI status according to a unified TCI architecture, and the plurality of DCIs are configured with the first CORESET pool index. CORESET and/or configure the CORESET transfer with a second CORESET pool index.
The terminal device according to claim 43, characterized in that the plurality of DCIs include a first DCI, and the TCI status of the first signal or channel is determined according to the plurality of DCIs:

In the case where the first time of the first DCI is the latest among the first times of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI.
The terminal device according to claim 44, characterized in that the first time includes:

The listening time of the physical downlink control channel PDCCH carrying DCI or the start symbol or end symbol in the time domain; or

DCI's Hybrid Automatic Repeat Request Acknowledgment HARQ-ACK feedback time.
The terminal device according to claim 44 or 45, wherein the plurality of DCIs further include a second DCI, and the determination of the TCI status of the first signal or channel based on the plurality of DCIs further includes:

In the case where the first time of the first DCI and the first time of the second DCI are the same, the TCI state of the first signal or channel is determined based on the second time of the plurality of DCIs.
The terminal device according to claim 46, wherein the determination of the TCI status of the first signal or channel based on the second time of the plurality of DCIs includes:

In the case where the second time of the first DCI is the latest of the second times of the plurality of DCIs, the TCI status of the first signal or channel is determined based on the indication of the first DCI; or

In the case where the second time of the second DCI is the latest among the second times of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the second DCI.
The terminal device according to claim 46 or 47, characterized in that,

In the case where the first time is the listening moment of the PDCCH carrying the DCI or the start symbol or end symbol in the time domain, the second time is the HARQ-ACK feedback time of the DCI; or

When the first time is the HARQ-ACK feedback time of the DCI, the second time is the listening time of the PDCCH carrying the DCI or the start symbol or end symbol in the time domain.
The terminal device according to claim 44 or 45, wherein the plurality of DCIs further include a third DCI, and the determination of the TCI status of the first signal or channel based on the plurality of DCIs further includes:

When the first time of the first DCI and the first time of the third DCI are the same, the TCI status of the first signal or channel is determined based on a first identifier, and the first identifier is determined based on the first The rules are determined.
The terminal device according to any one of claims 46-48, wherein determining the TCI status of the first signal or channel based on the plurality of DCIs further includes:

When the second time of the first DCI and the second time of the second DCI are the same, the TCI status of the first signal or channel is determined based on a first identification, and the first identification is based on the first The rules are determined.
The terminal device according to claim 43, wherein the TCI status of the first signal or channel is determined based on the plurality of DCIs including:

The TCI status of the first signal or channel is determined according to a first identifier, and the first identifier is determined according to a first rule.
The terminal device according to any one of claims 49-51, characterized in that the first rule includes:

In the case where the first identifier associated with the first DCI is the smallest of the first identifiers associated with each of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI; or

In the case where the first identifier associated with the first DCI is the largest among the first identifiers associated with each of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI.
The terminal device according to claim 52, wherein the plurality of DCIs further include a fourth DCI, and the first identification includes a first sub-identification and a second sub-identification,

The first sub-identifier associated with the first DCI is the smallest among the first sub-identifiers associated with each of the plurality of DCIs, and the first sub-identifier associated with the first DCI is the same as the first sub-identifier associated with the fourth DCI. In the case where the sub-identities are the same, if the second sub-identity associated with the first DCI is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identifier associated with the first DCI is the smallest one. The smallest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identifier associated with the first DCI is the smallest among the first sub-identifiers associated with each of the plurality of DCIs, and the first sub-identifier associated with the first DCI is the same as the first sub-identifier associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the fourth DCI is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the fourth DCI is the smallest one. The smallest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identity associated with the first DCI is the largest among the first sub-identities associated with each of the plurality of DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the first DCI is the largest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the first DCI is the largest one. The largest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identity associated with the first DCI is the largest among the first sub-identities associated with each of the plurality of DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the fourth DCI is the largest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the fourth DCI is the largest one. The largest of the first identifiers associated with each of the multiple DCIs.
The terminal device according to claim 52 or 53, characterized in that the first rule is configured in one or more of the following ways:

Preconfigured, configured through high-level signaling, configured through physical layer signaling, and specified through communication protocols.
The terminal device according to any one of claims 43 to 54, characterized in that the TCI states of the same signal or channel indicated by the plurality of DCIs are the same.
The terminal device according to any one of claims 44-50 or 52-54, characterized in that determining the TCI status of the first signal or channel according to the indication of the first DCI includes:

In the case where the first DCI indicates the TCI state of the first signal or channel, the TCI state of the first signal or channel is the TCI state indicated by the first DCI.
The terminal device according to any one of claims 44-50 or 52-54, characterized in that determining the TCI status of the first signal or channel according to the indication of the first DCI includes:

In the case where the first DCI does not indicate the TCI status of the first signal or channel, the TCI status of the first signal or channel does not change.
The terminal device according to any one of claims 43-56, characterized in that, in the case where the plurality of DCIs all indicate the TCI status of the first signal or channel, the first signal or channel The TCI status determined based on the multiple DCIs includes:

The TCI state of the first signal or channel is one of the TCI states indicated by the plurality of DCIs.
The terminal device according to any one of claims 43-58, wherein the plurality of DCIs include a first DCI,

The first DCI indicates the TCI status of a signal or channel associated with the CORESET configured with the first CORESET pool index; and/or

The first DCI indicates the TCI status of a signal or channel associated with a COREST configured with a CORESET pool index different from the first CORESET pool index.
The terminal device according to any one of claims 43-59, characterized in that the plurality of DCIs include a first DCI and a fifth DCI, a first identifier associated with the first DCI and the fifth DCI The associated first identifier is different.
The terminal device according to any one of claims 49-54 or 60, characterized in that the first identification includes one or more of the following identifications:

CORESET’s logo;

CORESET pool index;

The identification of the carrier;

Search space identifier.
The terminal device according to any one of claims 43-61, characterized in that the first signal or channel includes at least one of the following:

PDCCH, physical downlink shared channel PDSCH, physical uplink shared channel PUSCH, physical uplink control channel PUCCH, channel state information measurement reference signal CSI-RS, and sounding reference signal SRS.
The terminal device according to any one of claims 43 to 62, characterized in that the effective time of the TCI status indicated in the plurality of DCIs is the same.
A communication network device, characterized in that the network device includes:

A sending unit configured to send a plurality of downlink control information DCIs, part or all of the plurality of DCIs indicating a transmission configuration of a first signal or channel associated with a first CORESET configured with a first control resource set CORESET pool index. Indicate TCI status;

Wherein, the TCI status of the first signal or channel is determined according to the plurality of DCIs, the plurality of DCIs all indicate the TCI status according to a unified TCI architecture, and the plurality of DCIs are configured with the first CORESET pool index. CORESET and/or configure the CORESET transfer with a second CORESET pool index.
The network device according to claim 64, wherein the plurality of DCIs include a first DCI, and the TCI status of the first signal or channel is determined according to the plurality of DCIs:

In the case where the first time of the first DCI is the latest among the first times of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI.
The network device according to claim 65, wherein the first time includes:

The listening time of the physical downlink control channel PDCCH carrying DCI or the start symbol or end symbol in the time domain; or

DCI's Hybrid Automatic Repeat Request Acknowledgment HARQ-ACK feedback time.
The network device according to claim 65 or 66, wherein the plurality of DCIs further include a second DCI, and the determination of the TCI status of the first signal or channel based on the plurality of DCIs further includes:

In the case where the first time of the first DCI and the first time of the second DCI are the same, the TCI state of the first signal or channel is determined based on the second time of the plurality of DCIs.
The network device according to claim 67, wherein the determination of the TCI status of the first signal or channel based on the second time of the plurality of DCIs includes:

In the case where the second time of the first DCI is the latest of the second times of the plurality of DCIs, the TCI status of the first signal or channel is determined based on the indication of the first DCI; or

In the case where the second time of the second DCI is the latest among the second times of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the second DCI.
The network device according to claim 67 or 68, characterized in that,

In the case where the first time is the listening moment of the PDCCH carrying the DCI or the start symbol or end symbol in the time domain, the second time is the HARQ-ACK feedback time of the DCI; or

When the first time is the HARQ-ACK feedback time of the DCI, the second time is the listening time of the PDCCH carrying the DCI or the start symbol or end symbol in the time domain.
The network device according to claim 65 or 66, wherein the plurality of DCIs further include a third DCI, and the determination of the TCI status of the first signal or channel based on the plurality of DCIs further includes:

When the first time of the first DCI and the first time of the third DCI are the same, the TCI status of the first signal or channel is determined based on a first identifier, and the first identifier is determined based on the first The rules are determined.
The network device according to any one of claims 67-69, wherein determining the TCI status of the first signal or channel based on the plurality of DCIs further includes:

When the second time of the first DCI and the second time of the second DCI are the same, the TCI status of the first signal or channel is determined based on a first identification, and the first identification is based on the first The rules are determined.
The network device according to claim 64, wherein the TCI status of the first signal or channel is determined based on the plurality of DCIs including:

The TCI status of the first signal or channel is determined according to a first identifier, and the first identifier is determined according to a first rule.
The network device according to any one of claims 70-72, characterized in that the first rule includes:

In the case where the first identifier associated with the first DCI is the smallest of the first identifiers associated with each of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI; or

In the case where the first identifier associated with the first DCI is the largest among the first identifiers associated with each of the plurality of DCIs, the TCI status of the first signal or channel is determined according to the indication of the first DCI.
The network device according to claim 73, wherein the plurality of DCIs further include a fourth DCI, and the first identification includes a first sub-identification and a second sub-identification,

The first sub-identifier associated with the first DCI is the smallest among the first sub-identifiers associated with each of the plurality of DCIs, and the first sub-identifier associated with the first DCI is the same as the first sub-identifier associated with the fourth DCI. In the case where the sub-identities are the same, if the second sub-identity associated with the first DCI is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identifier associated with the first DCI is the smallest one. The smallest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identifier associated with the first DCI is the smallest among the first sub-identifiers associated with each of the plurality of DCIs, and the first sub-identifier associated with the first DCI is the same as the first sub-identifier associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the fourth DCI is the smallest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the fourth DCI is the smallest one. The smallest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identity associated with the first DCI is the largest among the first sub-identities associated with each of the plurality of DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the first DCI is the largest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the first DCI is the largest one. The largest of the first identifiers associated with each of the plurality of DCIs; or

The first sub-identity associated with the first DCI is the largest among the first sub-identities associated with each of the plurality of DCIs, and the first sub-identity associated with the first DCI is the same as the first sub-identity associated with the fourth DCI. In the case of the same sub-identity, if the second sub-identity associated with the fourth DCI is the largest among the second sub-identities associated with each of the plurality of DCIs, then the first identification associated with the fourth DCI is the largest one. The largest of the first identifiers associated with each of the multiple DCIs.
The network device according to claim 73 or 74, characterized in that the first rule is configured in one or more of the following ways:

Preconfigured, configured through high-level signaling, configured through physical layer signaling, and specified through communication protocols.
The network device according to any one of claims 64 to 75, characterized in that the TCI states of the same signal or channel indicated by the plurality of DCIs are the same.
The network device according to any one of claims 65-71 or 73-75, characterized in that determining the TCI status of the first signal or channel according to the indication of the first DCI includes:

In the case where the first DCI indicates the TCI state of the first signal or channel, the TCI state of the first signal or channel is the TCI state indicated by the first DCI.
The network device according to any one of claims 65-71 or 73-75, characterized in that determining the TCI status of the first signal or channel according to the indication of the first DCI includes:

In the case where the first DCI does not indicate the TCI status of the first signal or channel, the TCI status of the first signal or channel does not change.
The network device according to any one of claims 64-77, characterized in that, in the case where the plurality of DCIs all indicate the TCI status of the first signal or channel, the first signal or channel The TCI status determined based on the multiple DCIs includes:

The TCI state of the first signal or channel is one of the TCI states indicated by the plurality of DCIs.
The network device according to any one of claims 64-79, wherein the plurality of DCIs include a first DCI,

The first DCI indicates the TCI status of a signal or channel associated with the CORESET configured with the first CORESET pool index; and/or

The first DCI indicates the TCI status of a signal or channel associated with a COREST configured with a CORESET pool index different from the first CORESET pool index.
The network device according to any one of claims 64 to 80, wherein the plurality of DCIs include a first DCI and a fifth DCI, a first identifier associated with the first DCI and the fifth DCI The associated first identifier is different.
The network device according to any one of claims 70-75 or 81, characterized in that the first identification includes one or more of the following identifications:

CORESET’s logo;

CORESET pool index;

The identification of the carrier;

Search space identifier.
The network device according to any one of claims 64-82, wherein the first signal or channel includes at least one of the following:

PDCCH, physical downlink shared channel PDSCH, physical uplink shared channel PUSCH, physical uplink control channel PUCCH, channel state information measurement reference signal CSI-RS, and sounding reference signal SRS.
The network device according to any one of claims 64 to 83, characterized in that the effective time of the TCI status indicated in the plurality of DCIs is the same.
A terminal device, characterized in that it includes a transceiver, a memory and a processor, the memory is used to store a program, the processor is used to call the program in the memory, so that the terminal executes the instructions of claim 1- The method described in any one of 21.
A network device, characterized in that it includes a transceiver, a memory and a processor, the memory is used to store a program, and the processor is used to call the program in the memory so that the network device executes the method of claim 22 The method described in any one of -42.
A device, characterized by comprising a processor for calling a program from a memory, so that the device executes the method according to any one of claims 1-21.
A device, characterized by comprising a processor for calling a program from a memory, so that the device executes the method according to any one of claims 22-42.
A chip, characterized in that it includes a processor for calling a program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-21.
A chip, characterized in that it includes a processor for calling a program from a memory, so that a device equipped with the chip executes the method according to any one of claims 22-42.
A computer-readable storage medium, characterized in that a program is stored thereon, and the program causes the computer to execute the method according to any one of claims 1-21.
A computer-readable storage medium, characterized in that a program is stored thereon, and the program causes the computer to execute the method according to any one of claims 22-42.
A computer program product, characterized by comprising a program that causes a computer to execute the method according to any one of claims 1-21.
A computer program product, characterized by comprising a program that causes a computer to execute the method according to any one of claims 22-42.
A computer program, characterized in that the computer program causes the computer to perform the method according to any one of claims 1-21.
A computer program, characterized in that the computer program causes the computer to perform the method according to any one of claims 22-42.