WO2022126663A1

WO2022126663A1 - Tci state list updating method and apparatus, and device and storage medium

Info

Publication number: WO2022126663A1
Application number: PCT/CN2020/137793
Authority: WO
Inventors: 胡荣贻
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2022-06-23
Also published as: CN116325605A

Abstract

Provided are a TCI state list updating method and apparatus, and a device and a storage medium. A network device sends first indication information to a terminal device, wherein the first indication information is used for updating a TCI state list; and the terminal device can determine a first TCI state list according to the first indication information, wherein the first TCI state list comprises a first active TCI state, the first active TCI state comprises reference signal configuration information, and the reference signal configuration information is used for configuring a short-cycle reference signal, and a switching adjustment time of a TCI state can thus be determined according to the first TCI state list. In the technical solution, since reference signal configuration information is used for configuring a short-cycle reference signal, the interruption of data transmission to the current serving cell during TCI state switching is shortened, the efficiency of switching is improved, and the throughput loss is reduced.

Description

TCI state list update method, apparatus, device and storage medium

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method, apparatus, device, and storage medium for updating a TCI state list of transmission configuration indications.

Background technique

In a new radio (NR) system, the characteristics of the transmission environment corresponding to data transmission are represented by quasi co-location information (QCL Info), and the network side transmits downlink control channels or data. When the channel is connected, the corresponding QCL state information will be indicated to the terminal through the transmission configuration indicator (TCI) state, so that the terminal can improve the receiving algorithm accordingly, thereby improving the receiving performance.

In the prior art, the network can configure the update of the TCI state. Specifically, the network sends an activation instruction to the terminal, and the activation instruction is used to activate the switching of the TCI state and the configuration of a new reference signal. Correspondingly, after receiving the activation instruction, the terminal will The reference signal to adjust the corresponding new beam information, and when it is determined that the first reference signal is received and processed, the updated TCI state is used to receive the downlink control signal. The preset time interval is the same as the period of the new reference signal and time offset.

However, in the above manner, the terminal needs to receive and process the first reference signal within the preset time interval before using the updated TCI state to receive the downlink control signal. If the period of the new reference signal is longer, the terminal needs to Data cannot be received and sent for a long period of time, resulting in a waste of time and a large loss of terminal throughput.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method, apparatus, device, and storage medium for updating a TCI state list, which are used to solve the problems of time waste and large loss of terminal throughput when updating the existing TCI state list.

In a first aspect, an embodiment of the present application provides a method for updating a TCI state list, including:

A first TCI state list is determined, where the first TCI state list includes: a first activated TCI state, where the first activated TCI state includes reference signal configuration information, where the reference signal configuration information is used to configure a short-period reference signal.

In a second aspect, an embodiment of the present application provides a method for updating a TCI state list, including:

receiving first indication information from the network device, where the first indication information is used to update the TCI state list;

According to the first indication information, a first TCI state list is determined, where the first TCI state list includes: a first activated TCI state, and the first activated TCI state includes reference signal configuration information, and the reference signal configuration information uses for configuring short-period reference signals;

According to the first TCI state list, the switching adjustment time of the TCI state is determined.

In a third aspect, an embodiment of the present application provides an apparatus for updating a TCI state list, including:

A processing module that determines a first TCI state list, where the first TCI state list includes: a first activated TCI state, where the first activated TCI state includes reference signal configuration information, where the reference signal configuration information is used to configure short-period reference Signal.

In a fourth aspect, an embodiment of the present application provides an apparatus for updating a TCI state list, including:

a receiving module, configured to receive first indication information from the network device, where the first indication information is used to update the TCI state list;

a processing module, configured to determine a first TCI state list according to the first indication information, where the first TCI state list includes: a first activated TCI state, the first activated TCI state includes reference signal configuration information, the The reference signal configuration information is used to configure the short-period reference signal;

The processing module is further configured to determine the switching adjustment time of the TCI state according to the first TCI state list.

In a fifth aspect, an embodiment of the present application provides a network device, including:

Interface for communication between processor, memory, transceiver and terminal equipment;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method provided in the first aspect.

Optionally, the above-mentioned processor may be a chip.

In a sixth aspect, an embodiment of the present application provides a terminal device, including:

Interfaces for processors, memories, transceivers to communicate with network equipment;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method provided in the second aspect.

Optionally, the above-mentioned processor may be a chip.

In a seventh aspect, embodiments of the present application may provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the provision of the first aspect Methods.

In an eighth aspect, embodiments of the present application may provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the provision of the second aspect Methods.

In a ninth aspect, an embodiment of the present application provides a program for executing the method provided in the first aspect when the program is executed by a processor.

In a tenth aspect, an embodiment of the present application provides a program for executing the method provided in the second aspect when the program is executed by a processor.

In an eleventh aspect, an embodiment of the present application provides a computer program product, including program instructions, where the program instructions are used to implement the method provided in the first aspect.

In a twelfth aspect, embodiments of the present application provide a computer program product, including program instructions, where the program instructions are used to implement the method provided in the second aspect.

In a thirteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the method provided in the first aspect.

Further, the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the above-mentioned first. methods provided.

In a fourteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the method provided in the second aspect.

Further, the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the second aspect provided method.

In the method, device, device, and storage medium for updating the TCI state list provided by the embodiments of the present application, the network device sends first indication information to the terminal device, and the first indication information is used to update the TCI state list, and the terminal device can update the TCI state list according to the first indication information, determine a first TCI state list, the first TCI state list includes: a first activated TCI state, the first activated TCI state includes reference signal configuration information, and the reference signal configuration information is used to configure a short-period reference signal, and then The switching adjustment time of the TCI state may be determined according to the first TCI state list. In this technical solution, since the reference signal configuration information is used to configure a short-period reference signal, that is, the reference signal corresponding to the first activated TCI state included in the first TCI state list is configured with a short period, which shortens the time required for the current serving cell in the TCI state switching. The data transmission is interrupted, the efficiency of handover is improved, and the loss of throughput is reduced.

Description of drawings

FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

Fig. 2 is a schematic diagram of a TCI state configuration flow diagram of PDSCH;

3 is a schematic diagram of the distribution of the handover adjustment time when the UE performs TCI state handover;

4 is an interactive schematic diagram of Embodiment 1 of a method for updating a TCI state list provided by the present application;

5 is a schematic flowchart of Embodiment 2 of a method for updating a TCI state list provided by the present application;

6A is a schematic diagram of determining a TCI state switching adjustment time by using one CSI-RS in an embodiment of the present application;

6B is a schematic diagram of determining a TCI state switching adjustment time by using multiple CSI-RSs in an embodiment of the present application;

7 is a schematic flowchart of Embodiment 3 of a method for updating a TCI state list provided by the present application;

8 is a schematic diagram of determining a TCI state switching adjustment time by using a reference signal of a target period in an embodiment of the present application;

9 is a schematic flowchart of Embodiment 4 of a method for updating a TCI state list provided by the present application;

10 is a schematic diagram of determining the TCI state switching adjustment time by using one or more TRSs in an embodiment of the present application;

11 is a schematic diagram of determining the switching adjustment time of the TCI state by adopting a fixed delay interval in an embodiment of the present application;

12 is a schematic structural diagram of Embodiment 1 of an apparatus for updating a TCI state list provided by the present application;

13 is a schematic structural diagram of Embodiment 2 of an apparatus for updating a TCI state list provided by the present application;

14 is a schematic structural diagram of an embodiment of a network device provided by this application;

FIG. 15 is a schematic structural diagram of an embodiment of a terminal device provided by this application.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

The terms "first", "second" and the like in the description, claims and the above-mentioned drawings of the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

The methods for updating the TCI state list provided by the following embodiments of the present application can be applied to a communication system. FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application. As shown in FIG. 1 , the communication system may include a network device 110 and a plurality of terminal devices 120 located within the coverage of the network device 110 . FIG. 1 exemplarily shows one network device 110 and two terminal devices 120 .

Optionally, the communication system may include a plurality of network devices 110, and the coverage of each network device may include other numbers of terminal devices 120. In this embodiment of the present application, the network devices 110 and terminal devices included in the communication system may be The number of 120 is not limited.

As shown in FIG. 1 , the terminal device 120 is connected to the network device 110 in a wireless manner. For example, wireless communication between the network device 110 and the plurality of terminal devices 120 may be performed using an unlicensed spectrum.

Optionally, direct terminal (device to device, D2D) communication may be performed between the terminal devices 120 .

It can be understood that FIG. 1 is only a schematic diagram, and the communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices, or may include other networks such as network controllers and mobility management entities. entity, the embodiments of the present application are not limited to this.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE Time division duplex (TDD) systems, advanced long term evolution (LTE-A) systems, new radio (NR) systems, evolution systems of NR systems, LTE on unlicensed bands (LTE-based access to unlicensed spectrum, LTE-U) system, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed frequency bands, universal mobile telecommunication system (UMTS), global Worldwide interoperability for microwave access (WiMAX) communication systems, wireless local area networks (WLAN), wireless fidelity (WiFi), next-generation communication systems or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, device to device (device to device, D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), and vehicle to vehicle (V2V) communication, etc., the embodiments of the present application can also be applied to these communications system.

The system architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. The evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The network equipment involved in the embodiments of this application may be a common base station (such as a NodeB or eNB or gNB), a new radio controller (NR controller), a centralized network element (centralized unit), a new radio base station, Remote radio module, micro base station, relay, distributed unit (distributed unit), transmission reception point (TRP), transmission point (TP) or any other device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For the convenience of description, in all the embodiments of this application, the above-mentioned apparatuses for providing wireless communication functions for terminal equipment are collectively referred to as network equipment.

In this embodiment of the present application, the terminal device may be any terminal, for example, the terminal device may be user equipment of machine type communication. That is to say, the terminal device may also be called user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal), terminal (terminal), etc. A radio access network (RAN) communicates with one or more core networks, for example, the terminal device may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., for example, the terminal device may also Are portable, pocket-sized, hand-held, computer built-in or vehicle-mounted mobile devices that exchange language and/or data with a wireless access network. There is no specific limitation in the embodiments of the present application.

Optionally, network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

Optionally, communication between the network device and the terminal device and between the terminal device and the terminal device can be performed through licensed spectrum (licensed spectrum), or through unlicensed spectrum (unlicensed spectrum), or both through licensed spectrum and Unlicensed spectrum for communications. Communication between network equipment and terminal equipment and between terminal equipment and terminal equipment can be performed through the spectrum below 7 gigahertz (gigahertz, GHz), or through the frequency spectrum above 7 GHz, and can also use the frequency spectrum below 7 GHz and The spectrum above 7GHz is used for communication. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

In the embodiments of the present application, "a plurality of" refers to two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects are an "or" relationship.

The following first introduces some related technologies involved in the embodiments of the present application:

Quasi-collocation (QCL)

Quasi-co-location means that for signals with the same channel characteristics between different channels, it can be assumed that these signals come from the same transmission source. The QCL configuration can include many different signal types, such as channel state information-reference signaling (CSI-RS) or synchronous signal block (SSB) or sounding reference signal (sounding reference signal) , SRS). The network-side device can configure its corresponding QCL configuration for different beams. The network-side device can change the beam in which the terminal device works by changing the QCL configuration of the terminal device.

Transmission Configuration Indication (TCI) state (state)

In a communication system, terminal equipment and network equipment can transmit information. Specifically, when a terminal device receives a signal, it can use the transmission environment characteristic corresponding to the data transmission to improve the receiving algorithm, thereby improving the receiving performance. For example, the terminal device can utilize the statistical properties of the channel to optimize the design and parameters of the channel estimator.

In the NR system, the characteristics of the transmission environment corresponding to the data transmission can be represented by the QCL information of the downlink transmission.

In practical applications, if the downlink transmission comes from different beams, panels or TRPs, the characteristics of the transmission environment corresponding to data transmission may change. Therefore, in the NR system, the network side transmits downlink When the control channel or data channel is used, the corresponding QCL information will be indicated to the terminal device through the TCI state, so that the terminal device can determine the transmission environment characteristics corresponding to the downlink transmission.

In one embodiment, a TCI state may contain the following configuration information:

ID of the TCI state;

QCL info 1;

QCL information 2 (optional).

The ID of the TCI state is used to identify the TCI state.

A QCL message also includes the following information:

QCL type configuration;

QCL reference signal configuration.

The QCL type configuration may be one of QCL type A (QCL type A), QCL type B (QCL type B), QCL type C (QCL type C), and QCL type D (QCL type D); QCL reference signal The configuration may include an ID of a cell where the reference signal is located, an identifier of a bandwidth part (Bandwidth Part, BWP), and an identifier of the reference signal.

Optionally, the identifier of the reference signal may be the ID of the CSI-RS resource or the index of the synchronization signal block SSB.

In one embodiment, if a TCI state is configured with both QCL information 1 and QCL information 2, the QCL type of one of the QCL information must be one of QCL type A, QCL type B, and QCL type C, and the other QCL type must be one of QCL type A, QCL type B, and QCL type C. The QCL type of the message must be QCL type D.

Optionally, the definitions of different QCL types are as follows:

'QCL-Type A': {Doppler shift, Doppler spread, average delay, delay spread}, that is, the configuration information of QCL type A includes: Doppler shift, Doppler spread, average delay, and delay spread;

'QCL-Type B': {Doppler shift, Doppler spread}, that is, the configuration information of QCL type B includes: Doppler shift, Doppler spread;

'QCL-Type C': {Doppler shift, average delay}, that is, the configuration information of QCL type C includes: Doppler frequency shift, average delay;

'QCL-Type D': {Spatial Rx parameter}, that is, the configuration information of QCL type D includes: spatial reception parameters.

In the NR system, the network side can configure the TCI state for downlink signals or downlink channels.

In a possible design, if the network side configures the target downlink channel or the QCL reference signal of the target downlink signal as the reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as type A, type B or type C, then The terminal device may assume that the target downlink signal and the reference SSB or reference CSI-RS resource have the same large-scale parameters, and the large-scale parameters may be determined through the configuration of the QCL type.

In another possible design, if the network side configures the target downlink channel or the QCL reference signal of the downlink signal as the reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as type D, the terminal device can use and receive The target downlink signal is received by referring to the SSB or the receiving beam with the same reference CSI-RS resource (ie Spatial Rx parameter).

Generally, when the target downlink channel (or downlink signal) and its reference SSB or reference CSI-RS resource are on the network side, they are sent by the same TRP or the same panel or the same beam. If the transmission TRPs, transmission panels or transmission beams of the two downlink signals or downlink channels are different, different TCI states are usually configured.

For the physical downlink control channel (PDCCH), it can be indicated by means of radio resource control (RRC) signaling or RRC signaling + media access control (media access control, MAC) signaling Corresponds to the TCI status of the control resource set (CORESET).

For the physical downlink shared channel (PDSCH), that is, the downlink data channel, the available TCI state set is indicated by RRC signaling, and some of the TCI states are activated by MAC layer signaling, and finally the downlink control information ( The TCI state indication field in the downlink control information, DCI) indicates one or two TCI states from the activated TCI state for the PDSCH scheduled by the DCI. Among them, the case of two TCI states is mainly for the scenarios where multiple TRPs are similar.

Exemplarily, FIG. 2 is a schematic flowchart of a TCI state configuration process of a PDSCH. As shown in Figure 2, the network side first indicates N candidate TCI states through RRC signaling, then activates K among the N candidate TCI states through MAC signaling, and finally indicates 1 or 2 used TCI states through DCI TCI status. Optionally, N and K may be integers greater than or equal to 2, and N is greater than or equal to K.

Optionally, in practical applications, there are three TCI-state switching of activation configuration modes, which are respectively based on the TCI-state switching delay of the media access control-control element (MAC-CE). , RRC-based TCI-state switching delay and DCI-based TCI-state switching delay.

Exemplarily, the following takes TCI-state switching delay based on MAC-CE as an example to explain the switching of TCI-state.

In a possible design, if the target TCI state (target TCI state) is known, before receiving the PDSCH carrying the MAC-CE activation command in the nth time slot (slot n), the terminal device may adopt the currently occurring TCI state The target TCI state of the serving cell of the handover (TCI state switch), in

The first time slot (slot) after that receives the PDCCH. exist

And before, the terminal equipment should be able to receive PDCCH with the old TCI state (the old TCI state).

Among them, T _HARQ is the time between downlink data transmission and acknowledgement as specified in TS 38.213, that is, T _HARQ is the timing between DL data transmission and acknowledgement as specified in TS 38.213;

T _first-SSB indicates the time when the SSB is transmitted for the first time after the UE decodes the MAC CE command, and the SSB is the reference resource of the QCL type A or QCL type C of the target TCI state, that is, T _first-SSB is time to first SSB transmission after MAC CE command is decoded by the UE; The SSB shall be the QCL-Type A or QCL-Type C to target TCI state.

T _SSB-proc represents the time (including the margin) for demodulating and processing the SSB, specifically, T _SSB-proc =2ms.

TO _k indicates whether the known target TCI state is in the active TCI state list of PDSCH, if the target TCI state is not in the active TCI state list of PDSCH, TO _k =1, otherwise TO _k =0. That is, TO _k =1 if target TCI state is not in the active TCI state list for PDSCH, 0 otherwise.

Indicates the length of the time slot, which is related to μ of the subframe, μ is the subcarrier spacing of PUSCH, and μ is 0, 1, 2, and 3, indicating that the subcarrier spacing is 15kHz, 30kHz, 60kHz, and 120kHz, respectively. specific,

In another possible design, if the target TCI state is unknown, before receiving the PDSCH carrying the MAC-CE activation command in the nth time slot (slot n), the terminal device can use the current The target TCI state of the serving cell where the TCI state switch occurs, in

The first time slot (slot) after that receives the PDCCH. exist

Wherein, in the first frequency band (frequency range 1, FR1) or in the second frequency range (frequency range 2, FR2), when the TCI state switching does not involve QCL-Type D, T _L1-RSRP =0; or,

T _L1-RSRP is the time of the receive beam refinement in FR2, which is defined in two ways:

First, T _L1-RSRP is defined in the protocol as T _{L1-RSRP_Measurement_Period_SSB} specifying the SSB, where T _{L1-RSRP_Measurement_Period_SSB} represents the measurement time of L1-RSRP for measuring the SSB period, and L1-RSRP is the L1 layer (physical layer) Reference signal receiving power (RSRP).

Second, T _L1-RSRP is defined in the protocol as T _{L1-RSRP_Measurement_Period_CSI-RS specifying CSI-RS} , where T _{L1-RSRP_Measurement_Period_CSI-RS} represents the measurement time of L1-RSRP for measuring the CSI-RS period, L1-RSRP is the reference signal receiving power (RSRP) of the L1 layer (physical layer).

The conditions include: the configured high-level parameter repetition set is turned on and periodic CSI-RS.

Aperiodic CSI-RS is used if the number of resources in the resource is at least equal to the maximum number of receive beams (MaxNumberRxBeam).

Specifically, in the protocol, T _L1-RSRP is explained as follows:

-T _L1-RSRP =0 in FR1 or when the TCI state switching not involving QCL-Type D in FR2.Otherwise,

-T _L1-RSRP is the time for Rx beam refinement in FR2, defined as

-T _{L1-RSRP_Measurement_Period_SSB} for SSB as specified in clause 9.5.4.1;

-T _{L1-RSRP_Measurement_Period_CSI-RS} for CSI-RS as specified in clause 9.5.4.2;

-configured with higher layer parameter repetition set to ON;

-with the assumption of M=1for periodic CSI-RS;

-for aperiodic CSI-RS if number of resources in resource set at least equal to MaxNumberRxBeam.

TO _uk indicates whether the unknown target TCI state is in the active TCI state list of PDSCH;

Wherein, for CSI-RS based L1-RSRP measurement, TO _uk =1; that is, TO _uk =1 for CSI-RS based L1-RSRP measurement;

_{TO uk} ₌ 0 for SSB based L1-RSRP measurement when TCI state switching involves QCL-Type D;

TO _{uk =1 when TCI state switching involves other QCL types only; that is, TO uk} ₌ 1 when TCI state switching involves other QCL types only.

If the target TCI state is not in the active TCI state list of PDSCH, then TO _k =1, otherwise TO _k =0. That is, TO _k =1 if target TCI state is not in the active TCI state list for PDSCH, 0 otherwise.

For T _first-SSB :

When TCI state switching involves QCL-Type D, T _first _-SSB is time to first SSB transmission after L1-RSRP measurement when TCI state switching involves QCL-TypeD;

For other QCL types, T _first _-SSB is time to first SSB transmission after MAC CE command is decoded by the UE for other QCL types;

Among them, the target TCI state of the SSB is QCL-Type A or QCL-Type C; that is, The SSB should be the QCL-Type A or QCL-Type C to target TCI state.

Active TCI list update

If the target TCI state is known, once the UE receives the PDSCH carrying the update of the MAC-CE activated TCI state list in time slot n, it will be able to receive the PDCCH in the first time slot, and then use it to schedule the PDSCH with the new target TCI state , the first time slot is

The first slot after that. Among them, T _HARQ , T _first-SSB , T _SSB-proc and TO _k are all defined in clause 8.10.3 of the protocol.

Specifically, the English explanation is as follows: If the target TCI state is known, upon receiving PDSCH carrying MAC-CE active TCI state list update at slot n, UE shall be able to receive PDCCH to schedule PDSCH with the new target TCI state at the first slot that is after

Where T _HARQ , T _first-SSB , T _SSB-proc and TO _k are defined in clause 8.10.3.

In the prior art, the process of configuring TCI state switching or TCI state list update by MAC-CE activation signaling is basically the same. details as follows:

1. The network side indicates the corresponding TCI status for the downlink signal or downlink channel;

2. When the network configures the TCI state switch activated by MAC-CE, the configuration of a new reference signal (for example, RS1, the existing RS1 is SSB) is activated at the same time, and the RS1 is used for the UE to perform fast handover adjustment (a short segment time adjustment, one short timing adjustment). For example, it may include: the TCI state of the specific UE through the MAC CE indicates the MAC CE of the PDCCH for the specific UE, that is, the TCI State Indication for UE-specific PDCCH MAC CE.

3. The UE is receiving the activation signaling

Then, after a gap, when the first reference signal (TO _k *(T _first-SSB + T _SSB-proc )) is received and processed, the UE can use the new TCI state to receive the PDCCH.

4. When the UE completes the handover process in the above step 3, it needs to meet the specified time delay requirement, and the UE is not required to receive or send data within the interval gap.

Among them, 4-1: (based on requirement 8.10.3 in the existing protocol) For the known target TCI state, if the current target TCI state is in the active TCI state list of PDSCH, the delay requirement for TCI state switching is T _first-RS1 +T _RS1-proc .

4-2: (Based on the requirement 8.10.3 of the existing protocol) For the unknown target TCI state, if the current target TCI state is in the active TCI state list of PDSCH, the delay requirement for TCI state switching is T _L1-RSRP + TO _uk *(T _first-RS1 +T _RS1-proc ). Among them, for the meaning of T _L1-RSRP and TO _uk , please refer to the existing protocol TS 38133.

It can be seen from the above analysis that for the TCI state switch activated by MAC CE activation signaling or RRC activation signaling, the UE can use the old TCI state to receive the PDCCH until

After the UE receives and processes the activation signaling, it still needs to wait for a period of time (the above-mentioned gap), that is:

The first time slot (slot) after that can start to receive the PDCCH or PDSCH with the new TCI state.

In particular, FIG. 3 is a schematic diagram of the distribution of handover adjustment time when the UE performs TCI state handover. As shown in Figure 3, if the UE is in

At this time, the activation signaling is processed, and a reference signal is just missed. For example, the reference signal is SSB, and the period of SSB is 160ms, then the UE has to wait for a gap of 160ms to receive and send data, which will cause a lot of damage. latency and throughput loss. in,

It can be understood that the reason for this time slot gap is mainly because the UE needs to receive a reference signal (for example, SSB) to adjust the corresponding new beam, which may be to adjust the power and/or direction and/or timing of the new beam. Etc., the protocol does not explicitly require it, but leaves room for the UE to implement. Among them, the length of Gap depends on the period and time offset of the reference signal.

In view of the above problems, when the UE uses the MAC-CE carried by the PUSCH to update the activated TCI state list, it also exists, that is, the UE cannot receive and send data for a long time, and there is a waste of time and a large loss of terminal throughput. question.

In view of the above problems, the embodiments of the present application provide a method for updating a TCI state list, which is used to reduce the interruption time caused by the update of the TCI state list and reduce the throughput loss. Specifically, this application mainly includes the following implementation solutions:

In an embodiment, the network preconfigures or demarcates a TCI state subset in the active TCI state list, and the RS corresponding to each TCI state in the TCI state subset is preconfigured as a reference signal with a short period (eg 10ms) (eg SSB or CSI-RS) or select the reference signal with the shortest period from the reference signals corresponding to the configured TCI states. Once the UE supports or reports the ability to have fast TCI state switching or the ability to support fast updating of the TCI state list, the network can dynamically or semi-statically configure the TCI state switching based on the UE's request.

In another embodiment, a new TCI state list is introduced into the network. If the original TCI state list is called TCI state list 1, the new TCI state list may be called TCI state list 2. If there is a target TCI state in the TCI state list 2, the configured RS of the target TCI state must be a short period (such as 10ms) RS (such as CSI-RS or tracking reference signal (tracking reference signal, TRS), etc.). Optionally, the network may also configure the period of the RS at the same time. The UE can start to receive the PDCCH using the new TCI state after receiving and detecting one or more RSs in the processing process.

Alternatively, configure the RS of the target TCI state in a way predefined by the protocol, and the terminal device completes the TCI state switching adjustment according to the requirement of a fixed short delay interval (such as gap2=10ms) or no longer than 1 TRS period, and then Start receiving PDCCH with the new TCI state.

The above technical solution can improve the efficiency of updating the TCI state list, reduce the interruption gap caused by the TCI state switching, and reduce the throughput loss.

Hereinafter, the technical solutions of the present application will be described in detail through specific embodiments. It should be noted that the technical solution of the present application may include part or all of the following contents, the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. .

FIG. 4 is a schematic interaction diagram of Embodiment 1 of the method for updating a TCI state list provided by the present application. The method is described by the information exchange between the terminal device and the network device. Referring to Figure 4, in this embodiment, the method may include the following steps:

S401. Determine a first TCI state list, where the first TCI state list includes: a first activated TCI state, where the first activated TCI state includes reference signal configuration information, where the reference signal configuration information is used to configure a short-period reference signal.

In the embodiment of the present application, the first TCI state list may be a TCI state list formed by some TCI states in the original activated TCI state list, or may be a TCI state list redefined by the network device, which is not limited here.

Optionally, the short period in the short-period reference signal refers to the longer period of the reference signal in the prior art that activates the TCI state. For example, the period of the existing reference signal is 160 ms, and the first The period of a reference signal that activates the TCI state can be preconfigured to be 10ms.

In this step, the period of the short-period reference signal is less than the duration threshold. The duration threshold can be implemented with different definitions, as follows:

As an example, the duration threshold is a protocol-preconfigured and/or protocol-predefined threshold.

Optionally, when the duration threshold is preconfigured and/or predefined by the protocol, different terminal capabilities (eg, in the first frequency band FR1 or the second frequency band FR2, the cell is known or the cell is unknown, etc.) may correspond to different duration thresholds.

As another example, the duration threshold is a threshold configured by the network device.

Optionally, the duration threshold may be a threshold configured by the network device through RRC signaling, or may be a threshold determined by the network device according to the TCI state switching capability reported by the terminal device, which is not described in detail in this embodiment.

As another example, the duration threshold is a threshold reported by the terminal device based on the supported TCI state switching capability.

Specifically, the duration threshold may also be a threshold determined by the terminal device based on the TCI state switching capability supported by itself and reported to the network device.

In a possible design of the present application, before determining the first TCI state list, the network device may first determine the TCI state switching capability supported by the terminal device. Exemplarily, for a terminal device that supports and wishes to switch the TCI state quickly, it can send the supported TCI state switching capability to the network device, so that the network device can determine the first TCI state based on the TCI state switching capability supported by the terminal device. list.

Wherein, the TCI state switching capability includes: the capability of supporting fast switching of the TCI state or the capability of supporting the updating of the TCI state list.

Optionally, the ability to quickly switch the TCI state is a capability that the terminal device has during the process of executing the TCI state, which is relative to the TCI state switching capability of a common terminal. A terminal with the ability to quickly switch the TCI state can quickly perform the adjustment of the new beam information according to the short-period reference signal, and the time required for the adjustment is relatively short.

In another possible design of the present application, before determining the first TCI state list, the network device may first receive a TCI state list update request sent by the terminal device, that is, when the terminal device supports and wishes to quickly switch the TCI state, it may send a request to The network device sends a TCI state list update request, so that the network device determines the first TCI state list according to the received TCI state list update request.

It can be seen from the above analysis that for a terminal device that supports and hopes to quickly switch the TCI state, it can request to activate the update of the TCI state list, for example, dynamically request according to the indication of DCI requirements or, through the capability indication of the terminal device in the RRC command or Update semi-static requests.

Optionally, when the terminal device sends an activation TCI state list update request to the network device, it can also give the network a suggested reference signal (which may include a reference signal period) or an adjustment time, so that the network device is based on the terminal device's TCI state list update request. Or dynamically or semi-statically configure corresponding TCI adjustment switching information based on the TCI state switching capability supported by the terminal device.

S402a: The network device sends first indication information to the terminal device, where the first indication information is used to instruct to update the TCI state list.

Optionally, in the embodiment of the present application, the process of updating the TCI state list includes: adding a new TCI state in the TCI state list or deleting a certain TCI state in the TCI state list, thus, adding a new TCI state in the TCI state list. When a new TCI state is used, the first indication information carries the new TCI state that needs to be added; when deleting a certain TCI state in the TCI state list, the first indication information carries the identifier of the TCI state that needs to be deleted, so that the terminal equipment Take the appropriate action.

Exemplarily, in this embodiment, when the network device determines the first TCI state list for the terminal device, it can send it to the terminal device, so that the terminal device can, after processing the activation instruction, The reference signal of the first activated TCI state in the list performs the switching adjustment work of the TCI state.

S402b, the terminal device determines the first TCI state list according to the received first indication information.

S403. The terminal device determines the switching adjustment time of the TCI state according to the first TCI state list.

Exemplarily, after receiving the first indication information sent by the network device, the terminal device may update the TCI state list according to the information carried in the first indication information to generate the first TCI state list, and then may further update the TCI state list according to the information carried in the first indication information. The nature of the list (obtained based on the original activated TCI state list, or a new activated TCI state list introduced) and the period of the reference signal of the first activated TCI state included in the first TCI state list, determine whether the terminal device executes the TCI state. Toggle adjustment time.

Optionally, in the embodiment of the present application, after determining the switching adjustment time of the TCI state according to the first TCI state list, the terminal device may further include performing the following operations:

S404. Perform the switching adjustment of the TCI state within the switching adjustment time.

Exemplarily, after determining the first activated TCI state and processing the activation instruction of the first activated TCI state, the terminal device can perform the switching and adjustment of the TCI state, for example, according to the reference signal of the first activated TCI state. Adjust the new beam for receiving downlink information, and receive and process the first reference signal used, etc.

Optionally, the terminal device can adjust the power and/or direction and/or timing of the new beam according to the reference signal of the first activated TCI state, which is not limited in practical applications and can be determined according to the needs of the terminal device.

S405. When the handover adjustment work is completed, start from the end time slot of the handover adjustment time, allowing the downlink information to be received by using the determined first activated TCI state.

Under normal circumstances, the terminal device can complete the switching adjustment of the TCI state within the switching adjustment time. Specifically, before the end time slot of the switching adjustment time, the processing work for the activation instruction is completed, and the first At this time, starting from the end time slot of the handover adjustment time, the terminal device is allowed to receive downlink information by using the determined first activated TCI state.

Optionally, when switching the end time slot of the adjustment time, the terminal device may use the new TCI state to receive the PDCCH, and then determine the DCI of the scheduled PDSCH based on the received PDCCH. Optionally, the DCI may include the location and MCS information of the corresponding PDSCH, and may also indicate whether the data is retransmission, and relevant information such as layers and precoding used for transmission. The specific implementation of the downlink information is not limited here.

In the method for updating the TCI state list provided by the embodiment of the present application, the network device sends first indication information to the terminal device, the first indication information is used to update the TCI state list, and the terminal device can determine the first TCI state according to the first indication information list, the first TCI state list includes: the first activated TCI state, the first activated TCI state includes reference signal configuration information, the reference signal configuration information is used to configure the short-period reference signal, and then can be based on the first TCI state list , to determine the switching adjustment time of the TCI state. In this technical solution, since the reference signal configuration information is used to configure a short-period reference signal, that is, the reference signal of the first activated TCI state included in the first TCI state list is configured with a short period, which shortens the time required for the current serving cell in the TCI state switching. Data transmission is interrupted, improving handover efficiency and reducing throughput loss.

In a possible design of an embodiment of the present application, FIG. 5 is a schematic flowchart of Embodiment 2 of the method for updating a TCI state list provided by the present application. As shown in Figure 5, the above S401 can be implemented by the following steps:

S501. The network device obtains a list of configured and activated TCI states.

In this embodiment of the present application, the network device may first determine the original configured activated TCI state list, where the configured activated TCI state list includes multiple activated TCI states, and then select all activated TCI states from the list of activated TCI states. Selecting at least one active TCI state from among them forms a first TCI state list.

S502. The network device determines the period of the reference signal of each activated TCI state in the configured activated TCI state list.

In practical applications, since the TCI state switching efficiency on the terminal device side is related to the duration of adjusting the new beam after processing the activation command, and the duration of adjusting the new beam is related to the period of the reference signal used by the terminal device, the network device is After the configured activated TCI state list is determined, the period of the reference signal of each activated TCI state in the configured activated TCI state list may be obtained first, thereby laying a foundation for subsequent updating of the activated TCI state list.

S503. The network device determines the list formed by the first activated TCI state in the configured activated TCI state list as the first TCI state list, and the reference signal of the first activated TCI state is the reference signal with the shortest period.

Exemplarily, in order to improve the TCI state switching efficiency on the terminal device side, the network device may select the first activated TCI state with the reference signal with the shortest period from the list of configured activated TCI states, and then use these first activated TCI states to form List of first TCI states.

Specifically, from the network side, the network device may preconfigure or demarcate a TCI state subset in the original activated TCI state list, and the reference signal corresponding to each TCI state in the TCI state subset is preconfigured to have A reference signal (eg, SSB or CSI-RS) with a short period (eg, 10 ms), or the period of the reference signal corresponding to each TCI state in the TCI state subset is the shortest period of the configured reference signal.

Normally, each reference signal can be configured with a cycle sequence, but each reference signal has only one shortest cycle. For example, the period of the SSB can be configured to be any one of 10ms, 20ms, 40ms, 60ms, etc., but the shortest period configured is 10ms. The period of the TRS can be configured to be any one of 20ms, 40ms, 60ms, 80ms, etc., but the shortest period configured is 20ms.

Exemplarily, if a certain operation needs to consume a time of 20ms, when using an SSB with a period of 10ms, two reference signals are required for processing, and when an SSB with a period of 20ms is used, one reference signal is required for processing; When a TRS with a period of 20ms is used, only one TRS is required for processing.

Optionally, in practical applications, the selection priority of the reference signal and the period corresponding to the reference signal and the priority of using different reference signals may be set. For example, if a certain operation takes 20ms, and the reference signals available to the terminal device include SSB and TRS, the priority of SSB is higher than that of TRS, the shortest period of SSB is 10ms, and the shortest period of TRS is 20ms.

As an example, if the selection priority of the reference signal is greater than the selection priority of the corresponding period of the reference signal, the terminal device may first select the SSB as the used reference signal, and then use two SSBs with a period of 10ms for processing.

As another example, if the selection priority of the corresponding period of the reference signal is greater than the selection priority of the reference signal, the terminal device may firstly use the reference signal with the shortest period of 20ms, then determine to use the TRS with the shortest period of 20ms, and finally use 1 A TRS with a period of 20ms is processed.

It can be understood that since the short period is less than the duration threshold, when the terminal device selects the SSB as the reference signal used, in order to process the operation with a time consumption of 20ms, both the SSB with a period of 10ms and the SSB with a period of 20ms meet the requirements, then In addition to using two SSBs with a period of 10ms for processing, the terminal device can also choose to use one SSB with a period of 20ms for processing. The reference signal actually selected by the terminal device and the period corresponding to the reference signal can be determined according to actual requirements, and details are not repeated here.

Correspondingly, the above S403 can be implemented by the following steps:

S504. The terminal device determines, from the first TCI state list, the first activated TCI state with the shortest period reference signal.

In this embodiment, when the terminal device receives the first TCI state list sent by the network device, it can analyze the cycle of the reference signals of each TCI state in the first TCI state list, and then select the cycle from all the reference signal cycles. has the shortest period, and then determines the first active TCI state of the reference signal with the shortest period.

It can be understood that the first activated TCI state is the target switching TCI state of the terminal device.

S505. The terminal device determines the switching adjustment time of the TCI state based on the shortest period of the reference signal of the first activated TCI state.

Optionally, if the terminal device supports the ability to quickly switch the TCI state, after determining the first activated TCI state with the shortest period of the reference signal in the first TCI state list, it can The shortest period of the signal determines the switching adjustment time of the TCI state.

Exemplarily, the following description takes the existing TCI state configuration of the SSB or CSI-RS as an example for explanation. If it is agreed that once the terminal device supports the ability to quickly switch the TCI state or reports the ability to quickly switch the TCI state, the configured first TCI state period can be the configured SSB period and CSI on the current serving cell (serving cell). - The shortest period in the RS period.

For example, FIG. 6A is a schematic diagram of determining the TCI state switching adjustment time by using one CSI-RS in an embodiment of the present application. FIG. 6B is a schematic diagram of determining a TCI state switching adjustment time by using multiple CSI-RSs in an embodiment of the present application. As shown in FIG. 6A and FIG. 6B , the terminal device receives the activation command at time slot n, and completes the processing of the activation command at the time slot corresponding to (n+T _HARQ +3ms), assuming that the terminal device has just missed a reference at this time Signal. In the scenario diagram of this embodiment, since the shortest period of the SSB is smaller than the shortest period of the CSI-RS, the terminal device uses the CSI-RS as the reference signal of the first activated TCI state, and uses the shortest period of the CSI-RS to determine the TCI State switching adjustment time.

As an example, in the schematic diagram shown in FIG. 6A , the shortest period of one CSI-RS is used to determine the switching adjustment time of the TCI state. As another example, in the schematic diagram shown in FIG. 6B , the switching adjustment time of the TCI state is determined by using the shortest period of x CSI-RSs, where x is a positive integer greater than 1. Specifically, the terminal device needs to use multiple reference signals to perform operations such as time synchronization adjustment, and therefore, it needs to consume the adjustment time of multiple reference signal cycles.

In the method for updating the TCI state list provided by the embodiment of the present application, the network device determines the period of the reference signal of each active TCI state in the configured active TCI state list according to the configured active TCI state list, and then updates the configured active TCI state list with The list formed by the first TCI state of the reference signal with the shortest period is determined as the first TCI state list. Correspondingly, the terminal device can determine the first activated TCI state of the reference signal with the shortest period from the first TCI state list , and then determine the switching adjustment time of the TCI state based on the period of the reference signal with the shortest period. In this technical solution, the period of the reference signal with the shortest period is used to determine the switching adjustment time of the TCI state. For example, the configured SSB period of the current cell is 80ms, and the shortest period of the CSI-RS used is 10ms, which is significantly shortened. The data transmission interruption to the current serving cell in the TCI state handover is avoided, the handover efficiency is improved, and the throughput loss, especially the loss of the PDCCH transmission rate, is reduced.

In another possible design of the embodiment of the present application, FIG. 7 is a schematic flowchart of Embodiment 3 of the method for updating a TCI state list provided by the present application. As shown in Figure 7, the above S401 can be implemented by the following steps:

S701. The network device obtains a list of configured and activated TCI states.

The specific implementation of this step is the same as the specific implementation of S501 in the above-mentioned embodiment shown in FIG. 5 , and details are not repeated here.

S702. The network device determines the first activated TCI state from the list of configured activated TCI states.

In this embodiment, the network device may determine an activated TCI state from all TCI states included in the configured activated TCI state list, and use it as the first activated TCI state, that is, the terminal device may use the first activated TCI state in the future Status to receive downstream information.

S703. The network device is in the first activated TCI state, and preconfigures a reference signal with a target period.

Wherein, the target period is less than the duration threshold.

Optionally, the network device may use a reference signal with a fixed period, therefore, a reference signal with a target period may be pre-configured for the first activated TCI state, and the target period is a fixed duration and is less than the duration threshold, thereby shortening the execution of TCI by the terminal device. The duration of the state transition.

S704. The network device determines the activated TCI state list having the first activated TCI state as the first TCI state list.

Exemplarily, after processing the period of the reference signal of the first activated TCI state in the configured activated TCI state list, the network device updates the foregoing configured activated TCI state list, thereby forming the first TCI state list.

Correspondingly, the above S403 can be implemented by the following steps:

S705. The terminal device determines, from the first TCI state list, the first activated TCI state of the reference signal with the target period.

Exemplarily, after receiving the first TCI state list, the terminal device may determine the first activated TCI state from the first TCI state list, and the reference signal of the first activated TCI state is a reference signal with a target period.

S706, the terminal device determines the switching adjustment time of the TCI state based on the target period.

In this step, the terminal device may use the reference signal of the first activated TCI state to perform the adjustment of the new beam, that is, first determine the switching adjustment time of the TCI state according to the target period of the reference signal.

Optionally, in this embodiment, as shown in FIG. 7 , the method may further include the following steps:

S707. The terminal device modifies the configuration period of the reference signal on the serving cell where the terminal device is located according to the target period of the reference signal in the first activated TCI state.

As an example, when the terminal device determines that the reference signal of the first activated TCI state has a fixed target period, for example, when the reference signal of the first activated TCI state is the SSB of the fixed 20ms, the terminal device may sample the SSB of the fixed 20ms The adjustment switching time of the TCI state is determined, and the configuration period of the SSB on the serving cell is modified in association at the same time. It should be noted that this modification may be temporary, for example, only lasts for a fixed period of time such as 1s, or may be continuous, which is not limited here.

Optionally, the fixed target period that the reference signal of the first activation TCI state has can be indicated by the network device through the DCI instruction, or it can be configured through the MAC CE instruction. Specifically, through the DCI instruction or the MAC CE instruction. It is indicated by carrying the RS with the target period. The specific manner of configuring the target period is not limited here.

Exemplarily, FIG. 8 is a schematic diagram of determining a TCI state switching adjustment time by using a reference signal of a target period in an embodiment of the present application. As shown in FIG. 8 , the terminal device receives the activation command at time slot n, and completes the processing of the activation command at the time slot corresponding to (n+T _HARQ +3ms), assuming that the terminal device just missed a reference signal at this time. In the scenario diagram of this embodiment, the reference signal for the first activated TCI state is an SSB with a fixed 20ms, and at this time, the terminal device uses the SSB with a fixed 20ms to determine the switching adjustment time of the TCI state.

In the method for updating the TCI state list provided by the embodiment of the present application, the network device obtains the configured activated TCI state list, determines the first activated TCI state from the configured activated TCI state list, and preconfigures the first activated TCI state with The reference signal of the target period, and finally the activated TCI state list with the first activated TCI state is determined as the first TCI state list. Correspondingly, the terminal device can determine the reference signal with the target period from the first TCI state list The first activates the TCI state of the signal, and then determines the switching adjustment time of the TCI state based on the target period. In this technical solution, the terminal device uses a reference signal with a target period to determine the switching adjustment time of the TCI state, and the target period is less than the duration threshold, which is significantly shorter than the cycle duration of the existing reference signal, thus significantly shortening the TCI state switching The data transmission to the current serving cell is interrupted in the middle, which improves the handover efficiency and reduces the throughput loss.

In yet another possible design of the embodiment of the present application, FIG. 9 is a schematic flowchart of Embodiment 4 of the method for updating a TCI state list provided by the present application. As shown in Figure 9, the above S401 can be implemented by the following steps:

S901. The network device configures a first activated TCI state for the terminal device.

In this embodiment, the network device configures the first activated TCI state for the terminal device on the basis of the original activated TCI state list.

In a possible design of this embodiment, the reference signal of the first activated TCI state should be a reference signal configured with a short period. For example, the reference signal of the first activated TCI state is any one of the following: CSI-RS, TRS. Therefore, the reference signal of the first activated TCI state is a reference signal (eg, CSI-RS or TRS, etc.) configured with a short period (eg, 10 ms), so that the switching adjustment time of TCI state switching can be shortened.

In another possible design of this embodiment, the first activated TCI state is used to indicate that the time for switching the TCI state list is a fixed delay interval. The fixed delay interval is less than the duration threshold, or the fixed delay interval is less than one cycle duration of the reference signal of the target TCI state.

Exemplarily, if the reference signal of the first activated TCI state is a TRS that only supports the configuration of fast switching, the first activated TCI state may be used to indicate that the time for switching the TCI state list is a fixed delay interval, specifically a fixed time delay interval. The short delay interval (for example, the switching adjustment time is equal to 10ms) or not longer than 1 TRS period.

S902. The network device generates a first TCI state list according to the first activated TCI state.

Optionally, after configuring the first activated TCI state for the terminal device, the network device may generate a first TCI state list according to the first activated TCI state, where the first TCI state list is different from the existing activated TCI state list. The first TCI state list may be a newly introduced TCI state list.

Exemplarily, when the reference signal of the first activated TCI state is a reference signal configured with a short period, after the network device configures the first activated TCI state for the terminal device, the first TCI state is generated according to the first activated TCI state. Before listing, a cycle duration may also be configured for the reference signal of the first activated TCI state, so that the terminal device can determine the TCI state switching adjustment time based on the cycle duration of the reference signal.

Correspondingly, the above S403 can be implemented by the following steps:

S903. When determining that the first TCI state list is a newly configured activated TCI state list, the terminal device determines the first activated TCI state in the first TCI state list.

Exemplarily, when the terminal device determines that the received first TCI state list is a newly configured active TCI state list, it can determine that the first active TCI state exists in the first TCI state list, so that it can be based on the network device and the terminal device. According to the agreement, the first activated TCI state in the first TCI state list is determined.

S904. The terminal device determines the switching adjustment time of the TCI state according to the first activated TCI state.

When the terminal device acquires the first activated TCI state, it can determine the method for adjusting the time for switching the TCI state according to the information of the reference signal or the agreement information of the first activated TCI state.

As an example, when the reference signal of the first activated TCI state is a reference signal configured with a short period, the specific implementation scheme of S904 is: the terminal device first determines the period of the reference signal of the first activated TCI state, and then According to the period of the reference signal of the first activated TCI state, the switching adjustment time of the TCI state is determined.

In this example, the reference signal in the first activated TCI state is a short-period reference signal, and the terminal device may start receiving in a new TCI state (the first activated TCI state) after receiving detection of one or more reference signals Downlink information (eg, PDCCH).

FIG. 10 is a schematic diagram of determining a TCI state switching adjustment time by using one or more TRSs in an embodiment of the present application. Similar to the schematic diagrams shown in FIG. 6A, FIG. 6B, and FIG. 8 above, as shown in FIG. 10, the terminal device receives the activation instruction at time slot n, and completes the activation at the time slot corresponding to (n+T _HARQ +3ms). In the processing of the command, it is assumed that the terminal device has just missed a reference signal at this time. In the scenario diagram of this embodiment, the reference signal for activating the first TCI state is a TRS configured with a short period. At this time, the terminal device uses 1 or x TRS to determine the switching adjustment time of the TCI state, wherein the x is a positive integer greater than 1.

In this example, the cycle of the reference signal of the first activated TCI state in the newly configured activated TCI state list is shorter than the cycle of the reference signal of the TCI state in the original activated TCI state list, for example, the reference signal of the first activated TCI state The period of the signal TRS is shorter than that of the existing SSB, which can significantly shorten the interruption of data transmission in the current serving cell caused by the TCI state switching, improve the switching efficiency, and reduce the throughput loss.

As another example, when the time when the first activated TCI state is used to indicate the switching of the TCI state list is a fixed time delay interval, the specific implementation scheme of S904 is: according to the first activated TCI state, determine the TCI state for the TCI state. A fixed delay interval for list switching, and according to the fixed delay interval, the adjustment time for switching the TCI state is determined. Wherein, the fixed delay interval is less than the duration threshold, or the fixed delay interval is less than one cycle duration of the reference signal of the target TCI state.

In this example, if the reference signal of the first activated TCI state is a TRS that only supports the configuration of fast switching, once the terminal device determines that the network device indicates the target TCI state through the newly configured activated TCI state list, it can follow the fixed The short delay interval (such as gap2=10ms) or not longer than 1 TRS period, determine the switching adjustment time of the TCI state, and complete the switching adjustment of the TCI state as required within the switching adjustment time. At the beginning of the end slot, PDCCH reception with the first active TCI state is enabled.

FIG. 11 is a schematic diagram of determining the switching adjustment time of the TCI state by using a fixed delay interval in an embodiment of the present application. As shown in FIG. 11 , the terminal device also receives the activation command at time slot n, and completes the processing of the activation command at the time slot corresponding to (n+T _HARQ +3ms), assuming that the terminal device just missed a reference signal at this time. At this time, the terminal device adopts a fixed short delay interval or no longer than one TRS period to perform the switching adjustment of the TCI state.

In this example, the network does not restrict the implementation of the terminal device, that is, it does not configure or specify a certain reference signal for the first activated TCI state, but for a terminal that supports the ability to quickly switch the TCI state or support the ability to update the TCI state list, you can follow the A fixed short delay interval or no longer than one TRS period is used to complete the handover adjustment, which improves the efficiency of TCI state handover and reduces throughput loss, especially the loss of PDCCH transmission rate.

The above describes the specific implementation of the method for updating the TCI state list mentioned in the embodiments of the present application, and the following is an embodiment of the apparatus of the present application, which may be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

FIG. 12 is a schematic structural diagram of Embodiment 1 of an apparatus for updating a TCI state list provided by the present application. The device can be integrated in a network device or implemented through a network device. As shown in Figure 12, the TCI state list update device may include:

The processing module 1201: Determine a first TCI state list, where the first TCI state list includes: a first activated TCI state, where the first activated TCI state includes reference signal configuration information, where the reference signal configuration information is used to configure the short cycle reference signal;

The sending module 1202 is configured to send first indication information to the terminal device, where the first indication information is used to instruct to update the TCI state list.

Optionally, the period of the short-period reference signal is less than a duration threshold;

The duration threshold is a protocol preconfigured and/or protocol predefined threshold; or

The duration threshold is a threshold configured by the network device; or

The duration threshold is a threshold reported by the terminal device based on the supported TCI state switching capability.

In a possible design of this embodiment, the processing module 1201 is specifically used for:

According to the configured activated TCI state list, determine the period of the reference signal of each activated TCI state in the configured activated TCI state list;

A list formed by a first activated TCI state in the configured activated TCI state list is determined as the first TCI state list, and the reference signal of the first activated TCI state is a reference signal with the shortest period.

In another possible design of this embodiment, the processing module 120 is specifically configured to:

From the list of configured activated TCI states, determine the first activated TCI state;

for the first activated TCI state, preconfiguring a reference signal with a target period, the target period being less than the duration threshold;

An activated TCI state list having the first activated TCI state is determined as the first TCI state list.

In yet another possible design of this embodiment, the processing module 1201 is specifically configured to:

configuring a first activated TCI state for the terminal device;

The first TCI state list is generated according to the first activated TCI state.

Optionally, the processing module 1201 is further configured to configure a period duration for the reference signal of the first activated TCI state.

In this example, the reference signal of the first activated TCI state includes any one of the following:

Channel state information reference signal CSI-RS, tracking reference signal TRS.

As another example, the time when the first activated TCI state is used to indicate that the TCI state list is switched is a fixed delay interval;

The fixed delay interval is less than the duration threshold, or the fixed delay interval is less than one cycle duration of the reference signal of the target TCI state.

In another possible design of this embodiment, the processing module 1201 is further configured to determine the TCI state switching capability supported by the terminal device before determining the first TCI state list;

The processing module 1201 is used to determine the first TCI state list, specifically:

The processing module 1201 is specifically configured to determine the first TCI state list according to the TCI state switching capability supported by the terminal device.

In another possible design of this embodiment, the apparatus further includes: a receiving module 1203;

The receiving module 1203 is configured to, before the processing module 1201 determines the first TCI state list, receive a TCI state list update request sent by the terminal device;

The processing module 1201 is specifically configured to determine the first TCI state list according to the TCI state list update request.

The apparatus for updating the TCI state list provided in this embodiment is configured to execute the technical solutions on the network device side in the foregoing method embodiments, and the implementation principles and technical effects thereof are similar, which will not be repeated here.

FIG. 13 is a schematic structural diagram of Embodiment 2 of an apparatus for updating a TCI state list provided by the present application. The device can be integrated in the terminal equipment, and can also be realized through the terminal equipment. As shown in Figure 13, the TCI state list update device may include:

A receiving module 1301, configured to receive first indication information from a network device, where the first indication information is used to update the TCI state list;

The processing module 1302 is configured to determine, according to the first indication information, a first TCI state list, where the first TCI state list includes: a first activated TCI state, the first activated TCI state includes reference signal configuration information, and The reference signal configuration information is used to configure the short-period reference signal;

The processing module 1302 is further configured to determine the switching adjustment time of the TCI state according to the first TCI state list.

Wherein, the period of the short-period reference signal is less than the duration threshold;

The duration threshold is a threshold configured by the network device; or

In a possible design of this embodiment, the processing module 1302 is specifically configured to:

From the first TCI state list, determine the first activated TCI state with the reference signal of the shortest period;

Based on the shortest period of the reference signal of the first activated TCI state, the switching adjustment time of the TCI state is determined.

In another possible design of this embodiment, the processing module 1302 is specifically configured to:

From the first TCI state list, determine a first activated TCI state of a reference signal with a target period, where the target period is less than the duration threshold;

Based on the target period of the reference signal of the first activated TCI state, the switching adjustment time of the TCI state is determined.

Optionally, the processing module 1302 is further configured to modify the configuration period of the reference signal on the serving cell where the terminal device is located according to the target period of the reference signal in the first activated TCI state.

In yet another possible design of this embodiment, the processing module 1302 is specifically configured to:

When determining that the first TCI state list is a newly configured activated TCI state list, determining the first activated TCI state in the first TCI state list;

According to the first activated TCI state, the switching adjustment time of the TCI state is determined.

As an example, the processing module 1302 is configured to determine the switching adjustment time of the TCI state according to the first activated TCI state, specifically:

The processing module 1302 is specifically used for:

determining the period of the reference signal of the first activated TCI state;

The switching adjustment time of the TCI state is determined according to the period of the reference signal of the first activated TCI state.

As another example, the processing module 1302 is used to determine the switching adjustment time of the TCI state according to the first activated TCI state, specifically:

The processing module 1302 is specifically used for:

According to the first activated TCI state, a fixed delay interval for switching the TCI state list is determined, and the fixed delay interval is smaller than the duration threshold, or the fixed delay interval is smaller than the reference signal of the target TCI state the duration of a cycle;

According to the fixed delay interval, the switching adjustment time of the TCI state is determined.

In another possible design of this embodiment, it further includes: a sending module 1303;

The sending module 1303 is configured to send the supported TCI state switching capability to the network device;

or

The sending module 1303 is configured to send a TCI state list update request to the network device.

In another possible design of this embodiment, the processing module 1302 is further configured to perform the switching adjustment work of the TCI state within the switching adjustment time, and when the switching adjustment work is completed, from the switching adjustment The end of the time slot begins, allowing downstream information to be received with the determined first active TCI state.

The apparatus for updating the TCI state list provided in this embodiment is configured to execute the technical solutions on the terminal device side in the foregoing method embodiments, and the implementation principles and technical effects thereof are similar, and are not repeated here.

FIG. 14 is a schematic structural diagram of an embodiment of a network device provided by this application. As shown in FIG. 14, the network device may include: a processor 1401, a memory 1402, a transceiver 1403, and an interface 1404 for communicating with the terminal device.

Wherein, the memory 1402 stores computer-executed instructions;

The processor 1401 executes the computer-executed instructions stored in the memory, so that the processor 1401 executes the technical solutions on the network device side as in the foregoing method embodiments.

FIG. 15 is a schematic structural diagram of an embodiment of a terminal device provided by this application. As shown in FIG. 15 , the terminal device may include: a processor 1501, a memory 1502, a transceiver 1503, and an interface 1504 for communicating with a network device.

Wherein, the memory 1502 stores computer-executed instructions;

The processor 1501 executes the computer-executed instructions stored in the memory, so that the processor 1501 executes the technical solutions on the terminal device side as in the foregoing method embodiments.

Further, an embodiment of the present application may further provide a communication system, and the communication system may include: a terminal device and a network device.

Wherein, the terminal device may include the TCI status list updating apparatus described in FIG. 13 or the terminal device described in FIG. 15 , and the network device may include the TCI status list updating apparatus described in FIG. 12 or the network described in FIG. 14 . equipment.

It can be understood that the communication system may further include other devices, which may be determined according to actual scenarios, and details are not described herein again.

The present application further provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the technical solutions on the terminal device side in the foregoing method embodiments.

The present application further provides a computer-readable storage medium, where computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, are used to implement the technical solutions on the network device side in the foregoing method embodiments.

The embodiments of the present application further provide a program, which is used to execute the technical solutions on the terminal device side in the foregoing method embodiments when the program is executed by the processor.

The embodiments of the present application further provide a program, which, when the program is executed by the processor, is used to execute the technical solutions on the network device side in the foregoing method embodiments.

Embodiments of the present application further provide a computer program product, including program instructions, where the program instructions are used to implement the technical solutions on the terminal device side in the foregoing method embodiments.

Embodiments of the present application further provide a computer program product, including program instructions, where the program instructions are used to implement the technical solutions on the network device side in the foregoing method embodiments.

Embodiments of the present application further provide a chip, including: a processing module and a communication interface, where the processing module can execute the technical solutions on the terminal device side in the foregoing method embodiments.

Further, the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the above method implementation. The technical solution on the terminal device side in the example.

Embodiments of the present application further provide a chip, including: a processing module and a communication interface, where the processing module can execute the technical solutions on the network device side in the foregoing method embodiments.

Further, the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the aforementioned method implementation. The technical solution on the network device side in the example.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the device embodiments described above are only illustrative. For example, the division of 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 integrated. to another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

In the specific implementation of the above network equipment and terminal equipment, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, referred to as: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, referred to as: DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, referred to as: ASIC) and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps in combination with the method disclosed in the present application can be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

All or part of the steps for implementing the above method embodiments may be completed by program instructions related to hardware. The aforementioned program can be stored in a readable memory. When the program is executed, the steps including the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviated as: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

Claims

A method for updating a transmission configuration indication TCI state list, comprising:

A first TCI state list is determined, where the first TCI state list includes: a first activated TCI state, where the first activated TCI state includes reference signal configuration information, where the reference signal configuration information is used to configure a short-period reference signal.
The method according to claim 1, wherein the period of the short-period reference signal is less than a duration threshold;

The duration threshold is a protocol preconfigured and/or protocol predefined threshold; or

The duration threshold is a threshold configured by the network device; or

The duration threshold is a threshold reported by the terminal device based on the supported TCI state switching capability.
The method according to claim 1 or 2, wherein the determining the first TCI state list comprises:

According to the configured activated TCI state list, determine the period of the reference signal of each activated TCI state in the configured activated TCI state list;

A list formed by a first activated TCI state in the configured activated TCI state list is determined as the first TCI state list, and the reference signal of the first activated TCI state is a reference signal with the shortest period.
The method according to claim 1 or 2, wherein the determining the first TCI state list comprises:

From the list of configured activated TCI states, determine the first activated TCI state;

for the first activated TCI state, preconfiguring a reference signal with a target period, the target period being less than the duration threshold;

An activated TCI state list having the first activated TCI state is determined as the first TCI state list.
The method according to claim 1 or 2, wherein the determining the first TCI state list comprises:

configuring a first activated TCI state for the terminal device;

The first TCI state list is generated according to the first activated TCI state.
The method according to claim 5, wherein the method further comprises:

A period duration is configured for the reference signal of the first activated TCI state.
The method according to claim 5 or 6, wherein the reference signal of the first activated TCI state comprises any one of the following:

Channel state information reference signal CSI-RS, tracking reference signal TRS.
The method according to claim 5, wherein the time when the first activated TCI state is used to indicate the switching of the TCI state list is a fixed delay interval;

The fixed delay interval is less than a duration threshold, or the fixed delay interval is less than one cycle of the reference signal of the first activated TCI state.
The method according to any one of claims 1-8, wherein the method further comprises:

determining the TCI state switching capability supported by the terminal device;

The determining of the first TCI state list includes:

The first TCI state list is determined according to the TCI state switching capability supported by the terminal device.
The method according to claim 9, wherein the TCI state switching capability comprises: a capability of supporting fast switching of TCI states or a capability of supporting updating a TCI state list.
The method according to any one of claims 1-8, wherein the method further comprises:

receiving a TCI status list update request sent by the terminal device;

The determining of the first TCI state list includes:

Determine the first TCI state list according to the TCI state list update request.
The method according to any one of claims 1-11, wherein the method further comprises:

Send first indication information to the terminal device, where the first indication information is used to instruct to update the TCI state list.
A method for updating a transmission configuration indication TCI state list, comprising:

receiving first indication information from the network device, where the first indication information is used to update the TCI state list;

According to the first indication information, a first TCI state list is determined, where the first TCI state list includes: a first activated TCI state, and the first activated TCI state includes reference signal configuration information, and the reference signal configuration information uses for configuring short-period reference signals;

According to the first TCI state list, the switching adjustment time of the TCI state is determined.
The method according to claim 13, wherein the period of the short-period reference signal is less than a duration threshold;

The duration threshold is a protocol preconfigured and/or protocol predefined threshold; or

The duration threshold is a threshold configured by the network device; or

The duration threshold is a threshold reported by the terminal device based on the supported TCI state switching capability.
The method according to claim 13 or 14, wherein the determining the switching adjustment time of the TCI state according to the first TCI state list comprises:

From the first TCI state list, determine the first activated TCI state with the shortest period reference signal;

Based on the shortest period of the reference signal of the first activated TCI state, the switching adjustment time of the TCI state is determined.
The method according to claim 13 or 14, wherein the determining the switching adjustment time of the TCI state according to the first TCI state list comprises:

From the first TCI state list, determine a first activated TCI state with a target period reference signal, and the target period is less than the duration threshold;

Based on the target period of the reference signal of the first activated TCI state, the switching adjustment time of the TCI state is determined.
The method of claim 16, wherein the method further comprises:

According to the target period of the reference signal in the first activated TCI state, the configuration period of the reference signal on the serving cell where the terminal device is located is modified.
The method according to claim 13 or 14, wherein the determining the switching adjustment time of the TCI state according to the first TCI state list comprises:

When determining that the first TCI state list is a newly configured activated TCI state list, determining the first activated TCI state in the first TCI state list;

According to the first activated TCI state, the switching adjustment time of the TCI state is determined.
The method according to claim 18, wherein the determining the switching adjustment time of the TCI state according to the first activated TCI state comprises:

determining the period of the reference signal of the first activated TCI state;

The switching adjustment time of the TCI state is determined according to the period of the reference signal of the first activated TCI state.
The method according to claim 18, wherein the determining the switching adjustment time of the TCI state according to the first activated TCI state comprises:

A fixed delay interval for TCI state list switching is determined according to the first activated TCI state, where the fixed delay interval is smaller than a duration threshold, or the fixed delay interval is smaller than the first activated TCI state One cycle duration of the reference signal;

According to the fixed delay interval, the switching adjustment time of the TCI state is determined.
The method according to any one of claims 13-20, wherein the method further comprises:

sending the supported TCI state switching capability to the network device;

or

Send a TCI status list update request to the network device.
The method according to claim 21, wherein the TCI state switching capability comprises: a capability of supporting fast switching of TCI states or a capability of supporting updating a TCI state list.
The method according to any one of claims 13-22, wherein the method further comprises:

Perform the switching adjustment work of the TCI state within the switching adjustment time;

When the handover adjustment work is completed, starting from the end time slot of the handover adjustment time, it is allowed to use the determined first activated TCI state to receive downlink information.
A transmission configuration indication TCI state list update device, characterized in that it includes:

A processing module that determines a first TCI state list, where the first TCI state list includes: a first activated TCI state, where the first activated TCI state includes reference signal configuration information, where the reference signal configuration information is used to configure short-period reference Signal.
The apparatus according to claim 24, wherein a period of the short-period reference signal is less than a duration threshold;

The duration threshold is a protocol preconfigured and/or protocol predefined threshold; or

The duration threshold is a threshold configured by the network device; or

The duration threshold is a threshold reported by the terminal device based on the supported TCI state switching capability.
The method according to claim 24 or 25, wherein the processing module is specifically used for:

According to the configured activated TCI state list, determine the period of the reference signal of each activated TCI state in the configured activated TCI state list;

A list formed by a first activated TCI state in the configured activated TCI state list is determined as the first TCI state list, and the reference signal of the first activated TCI state is a reference signal with the shortest period.
The device according to claim 24 or 25, wherein the processing module is specifically used for:

From the list of configured activated TCI states, determine the first activated TCI state;

for the first activated TCI state, preconfiguring a reference signal with a target period, the target period being less than the duration threshold;

An activated TCI state list having the first activated TCI state is determined as the first TCI state list.
The device according to claim 24 or 25, wherein the processing module is specifically used for:

configuring a first activated TCI state for the terminal device;

The first TCI state list is generated according to the first activated TCI state.
The apparatus according to claim 28, wherein the processing module is further configured to configure a period duration for the reference signal of the first activated TCI state.
The apparatus according to claim 28 or 29, wherein the reference signal of the first activated TCI state comprises any one of the following:

Channel state information reference signal CSI-RS, tracking reference signal TRS.
The device according to claim 28, wherein the time when the first activated TCI state is used to indicate the switching of the TCI state list is a fixed delay interval;

The fixed delay interval is less than a duration threshold, or the fixed delay interval is less than one cycle duration of the reference signal of the first activated TCI state.
The apparatus according to any one of claims 24-31, wherein the processing module is further configured to determine the TCI state switching capability supported by the terminal device;

The processing module is used to determine the first TCI state list, specifically:

The processing module is specifically configured to determine the first TCI state list according to the TCI state switching capability supported by the terminal device.
The apparatus according to claim 32, wherein the TCI state switching capability comprises: a capability of supporting fast switching of TCI states or a capability of supporting updating a TCI state list.
The device according to any one of claims 24-31, further comprising: a receiving module;

The receiving module is configured to receive a TCI state list update request sent by the terminal device;

The processing module is specifically configured to determine the first TCI state list according to the TCI state list update request.
The device according to any one of claims 24-34, further comprising:

The sending module is configured to send first indication information to the terminal device, where the first indication information is used to instruct to update the TCI state list.
A transmission configuration indication TCI state list update device, characterized in that it includes:

a receiving module, configured to receive first indication information from the network device, where the first indication information is used to update the TCI state list;

a processing module, configured to determine a first TCI state list according to the first indication information, where the first TCI state list includes: a first activated TCI state, the first activated TCI state includes reference signal configuration information, the The reference signal configuration information is used to configure the short-period reference signal;

The processing module is further configured to determine the switching adjustment time of the TCI state according to the first TCI state list.
The apparatus according to claim 36, wherein a period of the short-period reference signal is less than a duration threshold;

The duration threshold is a protocol preconfigured and/or protocol predefined threshold; or

The duration threshold is a threshold configured by the network device; or

The duration threshold is a threshold reported by the terminal device based on the supported TCI state switching capability.
The device according to claim 36 or 37, wherein the processing module is specifically used for:

From the first TCI state list, determine the first activated TCI state with the reference signal of the shortest period;

Based on the shortest period of the reference signal of the first activated TCI state, the switching adjustment time of the TCI state is determined.
The device according to claim 36 or 37, wherein the processing module is specifically used for:

From the first TCI state list, determine a first activated TCI state of a reference signal with a target period, where the target period is less than the duration threshold;

Based on the target period of the reference signal of the first activated TCI state, the switching adjustment time of the TCI state is determined.
The apparatus according to claim 39, wherein the processing module is further configured to modify the reference signal on the serving cell where the terminal equipment is located according to the target period of the reference signal in the first activated TCI state. Configuration period.
The device according to claim 36 or 37, wherein the processing module is specifically used for:

When determining that the first TCI state list is a newly configured activated TCI state list, determining the first activated TCI state in the first TCI state list;

According to the first activated TCI state, the switching adjustment time of the TCI state is determined.
The device according to claim 41, wherein the processing module is configured to determine the switching adjustment time of the TCI state according to the first activated TCI state, specifically:

The processing module is specifically used for:

determining the period of the reference signal of the first activated TCI state;

The switching adjustment time of the TCI state is determined according to the period of the reference signal of the first activated TCI state.
The device according to claim 41, wherein the processing module is configured to determine the switching adjustment time of the TCI state according to the first activated TCI state, specifically:

The processing module is specifically used for:

According to the first activated TCI state, a fixed delay interval for switching the TCI state list is determined, and the fixed delay interval is smaller than the duration threshold, or the fixed delay interval is smaller than the first activated TCI state One cycle duration of the reference signal;

According to the fixed delay interval, the switching adjustment time of the TCI state is determined.
The device according to any one of claims 36-43, further comprising:

a sending module, configured to send the supported TCI state switching capability to the network device;

or

A sending module, configured to send a TCI state list update request to the network device.
The apparatus according to claim 44, wherein the TCI state switching capability comprises: a capability of supporting fast switching of TCI states or a capability of supporting updating a TCI state list.
The device according to any one of claims 36-45, wherein the processing module is further configured to perform the switching adjustment of the TCI state within the switching adjustment time, and when the switching adjustment is completed, Starting from the end time slot of the handover adjustment time, it is allowed to receive downlink information using the determined first activated TCI state.
A network device, characterized in that it includes:

Interface for communication between processor, memory, transceiver and terminal equipment;

the memory stores computer-executable instructions;

The processor executes computer-implemented instructions stored in the memory, causing the processor to perform the method of any of claims 1-12.
A terminal device, characterized in that it includes:

Interfaces for processors, memories, transceivers to communicate with network equipment;

the memory stores computer-executable instructions;

The processor executes computer-implemented instructions stored in the memory, causing the processor to perform the method of any of claims 13-23.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, is used to implement the method described in any one of claims 1-12. method described.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, is used to implement any one of the above claims 13-23 the method described.
A computer program product, comprising: program instructions, characterized in that, the program instructions are used to implement the method according to any one of the preceding claims 1-12.
A computer program product, comprising: program instructions, wherein the program instructions are used to implement the method according to any one of the above claims 13-23.