TCI status list updating method, device, equipment and storage medium

Abstract

The embodiment of the present application provides a TCI state list update method, apparatus, device and storage medium, the network device sends a first indication information to the terminal device, the first indication information is used to update the TCI state list, the terminal device can determine the first TCI state list according to the first indication information, the first TCI state list includes: a first activated TCI state, the first activated TCI state includes reference signal configuration information, the reference signal configuration information is used to configure a short-period reference signal, and then the switching adjustment time of the TCI state can be determined according to the first TCI state list. In this technical solution, since the reference signal configuration information is used to configure the short-period reference signal, the data transmission interruption of the current service cell during the TCI state switching is shortened, the switching efficiency is improved, and the throughput loss is reduced.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communication technology, and in particular, to a method, apparatus, device and storage medium for updating a transmission configuration indication (TCI) status list. Background Art

[0002] In the new radio (NR) system, the characteristics of the transmission environment corresponding to data transmission are represented by quasi co-location information (QCL Info). Moreover, when the network side transmits the downlink control channel or data channel, it will indicate the corresponding QCL status information to the terminal through the transmission configuration indicator (TCI) status, so that the terminal can improve the receiving algorithm accordingly, thereby improving the receiving performance.

[0003] In the prior art, the network can configure the update of the TCI state. Specifically, the network sends an activation instruction to the terminal, which 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 adjust the corresponding new beam information according to the new reference signal within a preset time interval, and when it is determined that the first reference signal has been received and processed, it will use the updated TCI state to receive the downlink control signal. The preset time interval is related to the period and time offset of the new reference signal.

[0004] However, in the above method, the terminal needs to receive and process the first reference signal within a 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 will not be able to receive and send data for a long time, resulting in a waste of time and a large loss of terminal throughput. Summary of the invention

[0005] The embodiments of the present application provide a TCI status list updating method, apparatus, device and storage medium, which are used to solve the problems of time waste and large terminal throughput loss in the existing TCI status list updating.

[0006] In a first aspect, an embodiment of the present application provides a TCI status list updating method, including:

[0007] 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-cycle reference signal.

[0008] In a second aspect, an embodiment of the present application provides a TCI status list updating method, including:

[0009] receiving first indication information from a network device, where the first indication information is used to update a TCI state list;

[0010] Determine, according to the first indication information, 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;

[0011] According to the first TCI state list, the switching adjustment time of the TCI state is determined.

[0012] In a third aspect, an embodiment of the present application provides a TCI status list updating device, including:

[0013] The processing module 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, and the reference signal configuration information is used to configure a short-cycle reference signal.

[0014] In a fourth aspect, an embodiment of the present application provides a TCI status list updating device, including:

[0015] A receiving module, configured to receive first indication information from a network device, wherein the first indication information is used to update a TCI status list;

[0016] 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, 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;

[0017] The processing module is also used to determine the switching adjustment time of the TCI state according to the first TCI state list.

[0018] In a fifth aspect, an embodiment of the present application provides a network device, including:

[0019] Interfaces for communication between processor, memory, transceiver and terminal equipment;

[0020] The memory stores computer-executable instructions;

[0021] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method provided in the first aspect above.

[0022] Optionally, the processor may be a chip.

[0023] In a sixth aspect, an embodiment of the present application provides a terminal device, including:

[0024] Interfaces for processors, memories, transceivers, and network devices to communicate;

[0025] The memory stores computer-executable instructions;

[0026] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method provided in the second aspect above.

[0027] Optionally, the processor may be a chip.

[0028] In a seventh aspect, an embodiment of the present application may provide a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, which are used to implement the method provided in the first aspect when the computer-executable instructions are executed by a processor.

[0029] In an eighth aspect, an embodiment of the present application may provide a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method provided in the second aspect.

[0030] In a ninth aspect, an embodiment of the present application provides a program, which, when executed by a processor, is used to execute the method provided in the first aspect.

[0031] In a tenth aspect, an embodiment of the present application provides a program, which, when executed by a processor, is used to execute the method provided in the second aspect.

[0032] In an eleventh aspect, an embodiment of the present application provides a computer program product, comprising program instructions, wherein the program instructions are used to implement the method provided in the first aspect.

[0033] In a twelfth aspect, an embodiment of the present application provides a computer program product, comprising program instructions, wherein the program instructions are used to implement the method provided in the second aspect.

[0034] In a thirteenth aspect, an embodiment of the present application provides a chip, comprising: a processing module and a communication interface, and the processing module can execute the method provided in the first aspect above.

[0035] Furthermore, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module enables the processing module to execute the method provided in the first aspect above.

[0036] In the fourteenth aspect, an embodiment of the present application provides a chip, comprising: a processing module and a communication interface, and the processing module can execute the method provided in the second aspect.

[0037] Furthermore, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module enables the processing module to execute the method provided by the second aspect.

[0038] The TCI state list updating method, apparatus, device and storage medium provided in the embodiment of the present application, the network device sends the first indication information to the terminal device, the first indication information is used to update the TCI state list, the terminal device can determine the first TCI state list according to the first indication information, the first TCI state list includes: a first activated TCI state, the first activated TCI state includes reference signal configuration information, the reference signal configuration information is used to configure a short-period reference signal, and then the switching adjustment time of the TCI state can be determined according to the first TCI state list. In this technical solution, since the reference signal configuration information is used to configure the 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, the data transmission interruption of the current service cell during the TCI state switching is shortened, the switching efficiency is improved, and the throughput loss is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the structure of a communication system provided in an embodiment of the present application;

[0040] Figure 2 Schematic diagram of the TCI state configuration process for PDSCH;

[0041] Figure 3 A schematic diagram showing the distribution of the switching adjustment time when the UE performs TCI state switching;

[0042] Figure 4 It is an interactive schematic diagram of the first embodiment of the TCI status list updating method provided by the present application;

[0043] Figure 5 A flowchart of the second embodiment of the TCI status list updating method provided by this application;

[0044] Fig. 6A This is a schematic diagram of using 1 CSI-RS to determine the TCI state switching adjustment time in an embodiment of the present application;

[0045] Figure 6B A schematic diagram of using multiple CSI-RSs to determine TCI state switching adjustment time in an embodiment of the present application;

[0046] Figure 7 A flowchart of the third embodiment of the TCI status list updating method provided in this application;

[0047] Figure 8 A schematic diagram of using a reference signal of a target period to determine a TCI state switching adjustment time in an embodiment of the present application;

[0048] Fig. 9 A flowchart of a fourth embodiment of the TCI status list updating method provided in this application;

[0049] Fig.10 A schematic diagram of using one or more TRSs to determine the TCI state switching adjustment time in an embodiment of the present application;

[0050] Fig.11 A schematic diagram of using a fixed delay interval to determine the switching adjustment time of the TCI state in an embodiment of the present application;

[0051] Fig.12 A schematic diagram of the structure of the first embodiment of the TCI status list updating device provided by the present application;

[0052] Fig.13 A schematic diagram of the structure of the second embodiment of the TCI status list updating device provided by the present application;

[0053] Fig.14 A schematic diagram of the structure of a network device embodiment provided by the present application;

[0054] Fig.15 A schematic diagram of the structure of a terminal device embodiment provided in this application. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] The terms "first", "second", etc. in the specification, 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 order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0057] The TCI status list updating method provided in the following embodiments of the present application can be applied to the communication system. Figure 1 This is a schematic diagram of the structure of a communication system provided in an embodiment of the present application. Figure 1 As shown, the communication system may include a network device 110 and a plurality of terminal devices 120 located within the coverage area of ​​the network device 110 . Figure 1 One network device 110 and two terminal devices 120 are shown by way of example.

[0058] Optionally, the communication system may include multiple network devices 110, and each network device may include another number of terminal devices 120 within its coverage area. The embodiment of the present application does not limit the number of network devices 110 and terminal devices 120 included in the communication system.

[0059] like Figure 1 As shown, the terminal device 120 is connected to the network device 110 in a wireless manner. For example, the network device 110 and the plurality of terminal devices 120 may perform wireless communication using unlicensed spectrum.

[0060] Optionally, terminal devices 120 may perform device-to-device (D2D) communication.

[0061] Understandably, Figure 1 This is only a schematic diagram. 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 network entities such as network controllers and mobile management entities, but the embodiments of the present application are not limited thereto.

[0062] 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 (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, advanced long term evolution (LTE-A) system, new radio (NR) system, NR system evolution system, LTE on unlicensed band (LTE-based access to unlicensed spectrum, LTE-U) system, NR on unlicensed band (NR-based access to unlicensed spectrum, NR-U) system, universal mobile telecommunication system (UMTS), global interoperability for microwave access (worldwide interoperability for microwave access, WiMAX) communication system, wireless local area networks (WLAN), wireless fidelity (WiFi), next generation communication system or other communication systems, etc.

[0063] 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 communications, but will also support, for example, 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 communication systems.

[0064] The system architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of network 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.

[0065] The network equipment involved in the embodiments of the present application may be an ordinary base station (such as NodeB or eNB or gNB), a new radio controller (new radio controller, NR controller), a centralized unit, a new wireless base station, a radio frequency remote module, a micro base station, a relay, a distributed unit, a transmission reception point (transmission reception point, TRP), a transmission point (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 equipment. For the convenience of description, in all embodiments of the present application, the above-mentioned devices that provide wireless communication functions for terminal devices are collectively referred to as network devices.

[0066] In the embodiments of the present application, the terminal device may be any terminal, for example, the terminal device may be a user device for machine type communication. That is to say, the terminal device may also be referred to as user equipment (UE), mobile station (MS), mobile terminal, terminal, etc. The terminal device may communicate with one or more core networks via a radio access network (RAN). For example, the terminal device may be a mobile phone (or a "cellular" phone), a computer with a mobile terminal, etc. For example, the terminal device may also be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges language and / or data with a radio access network. This is not specifically limited in the embodiments of the present application.

[0067] Optionally, the network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; 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.

[0068] Optionally, the network device and the terminal device, and the terminal device and the terminal device can communicate through a licensed spectrum, or can communicate through an unlicensed spectrum, or can communicate through both a licensed spectrum and an unlicensed spectrum. The network device and the terminal device, and the terminal device and the terminal device can communicate through a spectrum below 7 gigahertz (GHz), or can communicate through a spectrum above 7 GHz, or can use a spectrum below 7 GHz and a spectrum above 7 GHz at the same time. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

[0069] In the embodiments of the present application, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0070] The following first introduces some related technologies involved in the embodiments of this application:

[0071] Quasi-collocation (QCL)

[0072] 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 transmitting source. The QCL configuration can include a variety of different signal types, such as channel state information-reference signaling (CSI-RS) or synchronization signal block (SSB) or sounding reference signal (SRS). The network side device can configure the corresponding QCL configuration for different beams. The network side device can change the working beam of the terminal device by changing the QCL configuration of the terminal device.

[0073] Transmission Configuration Indication (TCI) state

[0074] In a communication system, terminal devices and network devices can transmit information. Specifically, when receiving a signal, the terminal device can use the characteristics of the transmission environment corresponding to the data transmission to improve the receiving algorithm, thereby improving the receiving performance. For example, the terminal device can use the statistical characteristics of the channel to optimize the design and parameters of the channel estimator.

[0075] In the NR system, the transmission environment characteristics corresponding to data transmission can be represented by the QCL information of the downlink transmission.

[0076] In actual applications, if the downlink transmission comes from different beams, panels or TRPs, the characteristics of the transmission environment corresponding to the data transmission may change. Therefore, in the NR system, when the network side transmits the downlink control channel or data channel, it will indicate the corresponding QCL information to the terminal device through the TCI state, so that the terminal device can determine the characteristics of the transmission environment corresponding to the downlink transmission.

[0077] In one embodiment, a TCI state may include the following configuration information:

[0078] ID of the TCI status;

[0079] QCL information 1;

[0080] QCL information 2 (optional).

[0081] The ID of the TCI state is used to identify the TCI state.

[0082] A QCL message contains the following information:

[0083] QCL type configuration;

[0084] QCL reference signal configuration.

[0085] Among them, the QCL type configuration can be one of QCL type A (QCL type A), QCL type B (QCL type B), QCL type C (QCL type C), QCL type D (QCL type D); the QCL reference signal configuration can include the cell ID where the reference signal is located, the identifier of the partial bandwidth (Bandwidth Part, BWP) and the identifier of the reference signal.

[0086] Optionally, the identifier of the reference signal may be an ID of a CSI-RS resource or an index of a synchronization signal block SSB.

[0087] 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 QCL type of the other QCL information must be QCL type D.

[0088] Optionally, the definitions of different QCL types are as follows:

[0089] 'QCL-Type A':{Doppler shift, Doppler spread, average delay, delayspread}, i.e., the configuration information of QCL type A includes: Doppler shift, Doppler spread, average delay, delay spread;

[0090] 'QCL-Type B':{Doppler shift,Doppler spread}, i.e., the configuration information of QCL type B includes: Doppler shift, Doppler spread;

[0091] 'QCL-Type C':{Doppler shift,average delay}, that is, the configuration information of QCL type C includes: Doppler shift, average delay;

[0092] 'QCL-Type D':{Spatial Rx parameter}, that is, the configuration information of QCL type D includes: spatial reception parameters.

[0093] In the NR system, the network side can configure the TCI status for the downlink signal or downlink channel.

[0094] In one possible design, if the network side configures the QCL reference signal of the target downlink channel or the target downlink signal as a reference SSB or a reference CSI-RS resource through the TCI state, and the QCL type is configured as type A, type B or type C, the terminal device can assume that the large-scale parameters of the target downlink signal and the reference SSB or reference CSI-RS resource are the same, and the large-scale parameters can be determined by the configuration of the QCL type.

[0095] In another possible design, if the network side configures the QCL reference signal of the target downlink channel or downlink signal as a 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 the same receiving beam (ie, Spatial Rx parameter) as that for receiving the reference SSB or reference CSI-RS resource to receive the target downlink signal.

[0096] Usually, the target downlink channel (or downlink signal) and its reference SSB or reference CSI-RS resource are transmitted by the same TRP or the same panel or the same beam on the network side. If the transmission TRP or transmission panel or transmission beam of two downlink signals or downlink channels is different, different TCI states are usually configured.

[0097] For the physical downlink control channel (PDCCH), the TCI status of the corresponding control resource set (CORESET) can be indicated by radio resource control (RRC) signaling or RRC signaling + media access control (MAC) signaling.

[0098] For the physical downlink shared channel (PDSCH), i.e. 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 one or two TCI states are indicated from the activated TCI states for the PDSCH scheduled by the DCI through the TCI state indication field in the downlink control information (DCI). Among them, the situation of two TCI states is mainly for scenarios similar to multiple TRPs.

[0099] For example, Figure 2 The following is a schematic diagram of the TCI state configuration process for PDSCH. Figure 2 As shown, the network side first indicates N candidate TCI states through RRC signaling, then activates K activated TCI states among the N candidate TCI states through MAC signaling, and finally indicates 1 or 2 used TCI states through DCI. Optionally, N and K can be integers greater than or equal to 2, and N is greater than or equal to K.

[0100] Optionally, in actual applications, there are three activation configuration modes of TCI-state switching, namely, TCI-state switching delay based on media access control-control element (MAC-CE), TCI-state switching delay based on RRC, and TCI-state switching delay based on DCI.

[0101] Exemplarily, the following takes the TCI-state switching delay based on MAC-CE as an example to explain the switching of TCI-state.

[0102] In one possible design, if the target TCI state is known, before receiving the PDSCH carrying the MAC-CE activation command in the nth time slot, the terminal device can adopt the target TCI state of the serving cell where the TCI state switch is currently occurring. The first time slot after receiving PDCCH. Before and after, the terminal device should be able to receive PDCCH using the old TCI state.

[0103] Among them, T HARQ It is the time between downlink data transmission and confirmation specified in TS 38.213, that is, T HARQ is the timing between DL data transmission and acknowledgment as specified in TS38.213;

[0104] T first-SSB Indicates the time of the first transmission of SSB after the UE decodes the MAC CE command, and SSB is the reference resource of QCL type A or QCL type C of the target TCI state, that is, T first-SSB is time to first SSBtransmission 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.

[0105] T SSB-proc Indicates the time for demodulation processing SSB (including margin), specifically, T SSB-proc =2ms.

[0106] TO k Indicates whether the known target TCI state is in the activated TCI state list of PDSCH. If the target TCI state is not in the activated TCI state list of PDSCH, TO k =1, otherwise TO k =0. That is, TO k =1if target TCIstate is not in the active TCI state list for PDSCH, 0otherwise.

[0107] Indicates the time slot length, which is related to the μ of the subframe. μ is the subcarrier spacing of PUSCH. μ of 0, 1, 2, and 3 respectively indicates that the subcarrier spacing is 15kHz, 30kHz, 60kHz, and 120kHz. Specifically,

[0108] 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, the terminal device can adopt the target TCI state of the serving cell where the TCI state switch currently occurs. The first time slot after receiving PDCCH. Before and after this, the terminal device should be able to receive PDCCH using the old TCI state.

[0109] When the TCI state switching does not involve QCL-Type D in the first frequency range (frequency range 1, FR1) or the second frequency range (frequency range 2, FR2), T L1-RSRP = 0; or,

[0110] T L1-RSRP is the receive beam refinement time in FR2 and can be defined in two ways:

[0111] First, T L1-RSRP Defined in the protocol as T to specify SSB L1-RSRP_Measurement_Period_SSB , where T L1-RSRP_Measurement_Period_SSB Indicates the measurement time of L1-RSRP of the SSB period. L1-RSRP is the reference signal receiving power (RSRP) of the L1 layer (physical layer).

[0112] Second, T L1-RSRP It is defined in the protocol as T for specifying CSI-RS. L1-RSRP_Measurement_Period_CSI-RS , where T L1-RSRP_Measurement_Period_CSI-RS Indicates the measurement time of L1-RSRP in the CSI-RS period. L1-RSRP is the reference signal receiving power (RSRP) of the L1 layer (physical layer).

[0113] The conditions include: configured high-level parameter repetition set on and periodic CSI-RS.

[0114] If the number of resources in the resource is at least equal to the maximum number of receive beams (MaxNumberRxBeam), aperiodic CSI-RS is used.

[0115] Specifically, in the protocol, T L1-RSRP The explanation is as follows:

[0116] -T L1-RSRP =0in FR1 or when the TCI state switching not involving QCL-Type D in FR2.Otherwise,

[0117] -T L1-RSRP is the time for Rx beam refinement in FR2, defined as

[0118] -T L1-RSRP_Measurement_Period_SSB for SSB as specified in clause 9.5.4.1;

[0119] -T L1-RSRP_Measurement_Period_CSI-RS for CSI-RS as specified in clause 9.5.4.2;

[0120] -configured with higher layer parameter repetition set to ON;

[0121] -with the assumption of M=1for periodic CSI-RS;

[0122] -for aperiodic CSI-RS if number of resources in resource set at least equal to MaxNumberRxBeam.

[0123] TO uk Indicates whether the unknown target TCI state is in the activated TCI state list of PDSCH;

[0124] Among them, for L1-RSRP measurement based on CSI-RS, TO uk =1; that is, TO uk=1for CSI-RS basedL1-RSRP measurement;

[0125] When TCI state switching involves QCL-Type D, for SSB-based L1-RSRP measurement, TO uk =0; that is, TO uk =0for SSB based L1-RSRP measurement when TCI state switching involves QCL-Type D;

[0126] When TCI state switching involves only other QCL types, TO uk =1; that is, TO uk =1when TCI stateswitching involves other QCL types only.

[0127] The target TCI state is not in the activated TCI state list of PDSCH, then TO k =1, otherwise TO k =0. That is, TO k =1if target TCI state is not in the active TCI state list for PDSCH, 0otherwise.

[0128] For T first-SSB :

[0129] When TCI state switching involves QCL-Type D, T first-SSB is the time from the L1-RSRP measurement to the first transmission of SSB; that is, T first-SSB is time to first SSB transmission after L1-RSRP measurement when TCI state switching involves QCL-TypeD;

[0130] For other QCL types, T first-SSB It is the time from when the UE decodes the MAC CE command to when the first SSB is transmitted; that is, T first-SSB is time to first SSB transmission after MAC CE command is decoded by the UE for other QCL types;

[0131] Among them, the target TCI state of the SSB is QCL-Type A or QCL-Type C; that is, The SSB shall be theQCL-Type A or QCL-Type C to target TCI state.

[0132] Active TCI List Update

[0133] If the target TCI state is known, once the UE receives the PDSCH carrying the MAC-CE activated TCI state list update in time slot n, it will be able to receive the PDCCH in the first time slot to schedule the PDSCH with the new target TCI state. The first time slot is The first time slot after that. HARQ 、T first-SSB 、T SSB-proc andTO k Both are defined in Section 8.10.3 of the Agreement.

[0134] 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 isafter Where T HARQ ,T first-SSB ,T SSB-proc and TO k are defined in clause 8.10.3.

[0135] In the prior art, the process of MAC-CE activation signaling configuration TCI state switching or TCI state list update is basically the same. The details are as follows:

[0136] 1. The network side indicates the corresponding TCI status for the downlink signal or downlink channel;

[0137] 2. When the network configures the TCI state switching activated by MAC-CE, a new reference signal (e.g., RS1, the existing RS1 is SSB) is simultaneously activated, and the RS1 is used for the UE to perform a fast switching adjustment (oneshort timing adjustment). For example, it may include: the TCI state indication for a specific UE through MAC CE is used for the MAC CE of the PDCCH of the specific UE, that is, TCI State Indication for UE-specific PDCCH MAC CE.

[0138] 3. UE receives activation signaling After a gap, the first reference signal (TO k *(T first-SSB +T SSB-proc )), the UE can use the new TCI state to receive PDCCH.

[0139] 4. The UE needs to meet the specified delay requirement to complete the switching process in step 3 above, and the UE is not required to receive or send data within the interval gap.

[0140] Among them, 4-1: (Based on requirement 8.10.3 in the existing protocol) For a known target TCI state, if the current target TCI state is in the activated TCI state list of PDSCH, the delay requirement for TCI state switching is T first-RS1 +T RS1-proc .

[0141] 4-2: (Based on requirement 8.10.3 of the existing protocol) For an unknown target TCI state, if the current target TCI state is in the activated 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, T L1-RSRP ,TO uk For the meaning of , refer to the existing protocol TS 38133.

[0142] From the above analysis, it can be seen that for TCI state switching activated by MAC CE activation signaling or RRC activation signaling, the UE can use the old TCI state to receive 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 thereafter can start receiving PDCCH or PDSCH using the new TCI state.

[0143] In particular, Figure 3 FIG. 4 is a schematic diagram showing the distribution of the switching adjustment time when the UE performs TCI state switching. Figure 3 As shown in When the activation signaling is processed, a reference signal is 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 and cannot receive and send data, which will cause a lot of time waste (latency) and throughput loss.

[0144] It is understandable that the reason for this time gap is that the UE needs to receive a reference signal (e.g., SSB) to adjust the corresponding new beam, which may be to adjust the power and / or direction and / or timing of the new beam. The protocol does not explicitly require this, but leaves room for the UE to implement. The length of the gap depends on the period and time offset of the reference signal.

[0145] In response to the above problem, when the UE uses the MAC-CE carried by the PUSCH to update the activated TCI status list, the same problem exists, that is, the UE cannot receive and send data for a long time, resulting in a waste of time and a large loss of terminal throughput.

[0146] In view of the above problems, the embodiment of the present application provides a TCI status list update method, which is used to reduce the interruption time caused by the TCI status list update and reduce the throughput loss. Specifically, the present application mainly includes the following implementation schemes:

[0147] In one embodiment, the network preconfigures or marks a TCI state subset in the activated TCI state list, and the RS corresponding to each TCI state in the TCI state subset is preconfigured as a reference signal (e.g., SSB or CSI-RS) with a short period (e.g., 10ms) or selects the reference signal with the shortest period from the reference signals corresponding to the configured TCI states. Once the UE supports or reports the capability of fast TCI state switching or the capability of supporting fast updating of the TCI state list, the network can dynamically or semi-statically configure the switching of the TCI state based on the request of the UE.

[0148] 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 can be called TCI state list 2. If the target TCI state exists in the TCI state list 2, the RS of the configured target TCI state must be an RS with a short period (such as 10ms) (such as CSI-RS or tracking reference signal (TRS), etc.). Optionally, the network can also configure the period of the RS at the same time. After receiving and detecting one or more RSs during the processing, the UE can start to receive the PDCCH using the new TCI state.

[0149] Alternatively, the RS of the target TCI state is configured in a manner predefined by the protocol, and the terminal device completes the switching adjustment of the TCI state according to a fixed short delay interval (such as gap2=10ms) or a requirement of no longer than 1 TRS cycle, and then starts to receive PDCCH with the new TCI state.

[0150] The above technical solution can improve the efficiency of TCI status list updating, reduce the interruption gap caused by TCI status switching, and reduce throughput loss.

[0151] The technical solution of the present application is described in detail below through specific embodiments. It should be noted that the technical solution of the present application may include part or all of the following contents, and 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.

[0152] Figure 4 1 is an interactive diagram of the first embodiment of the TCI status list updating method provided by the present application. The method is described by the information interaction between the terminal device and the network device. Figure 4 As shown, in this embodiment, the method may include the following steps:

[0153] 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.

[0154] In an 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.

[0155] Optionally, the short period in the short period reference signal refers to the longer period of the reference signal of the activated TCI state in the prior art. For example, the period of the existing reference signal is 160ms, and the period of the reference signal of the first activated TCI state in this embodiment can be preconfigured to 10ms.

[0156] In this step, the period of the short-period reference signal is less than the duration threshold. The duration threshold can be implemented using different definitions, as follows:

[0157] As an example, the duration threshold is a threshold preconfigured by the protocol and / or predefined by the protocol.

[0158] Optionally, when the duration threshold is preconfigured and / or predefined by a protocol, different terminal capabilities (eg, in the first frequency band FR1 or the second frequency band FR2, a known cell or an unknown cell, etc.) may correspond to different duration thresholds.

[0159] As another example, the duration threshold is a threshold configured by the network device.

[0160] Optionally, the duration threshold may be a threshold configured by the network device through RRC signaling, or a threshold determined by the network device based on the TCI state switching capability reported by the terminal device, which is not described in detail in this embodiment.

[0161] As another example, the duration threshold is a threshold reported by the terminal device based on the supported TCI state switching capability.

[0162] Specifically, the duration threshold may also be a threshold determined by the terminal device based on the TCI state switching capability supported by the terminal device and reported to the network device.

[0163] 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 hopes to quickly switch the TCI state, it may send the supported TCI state switching capability to the network device, so that the network device may determine the first TCI state list based on the TCI state switching capability supported by the terminal device.

[0164] Among them, the TCI state switching capability includes: the ability to support fast switching of TCI states or the ability to support updating the TCI state list.

[0165] Optionally, the ability to quickly switch TCI states is a capability that a terminal device has when executing a TCI state process, which is relative to the TCI state switching capability of an ordinary terminal. A terminal with the ability to quickly switch TCI states can quickly perform adjustments to new beam information based on a short-period reference signal, and the time required for the adjustment is relatively short.

[0166] 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 hopes to quickly switch the TCI state, it may send a TCI state list update request to the network device, so that the network device can determine the first TCI state list based on the received TCI state list update request.

[0167] From the above analysis, it can be seen that for terminal devices that support and hope to quickly switch TCI states, they can request to activate the update of the TCI state list, for example, dynamically request according to the instructions of the DCI requirements, or through the terminal device capability indication in the RRC command or update semi-static request.

[0168] Optionally, when the terminal device sends a request to activate the TCI status list update to the network device, it can also provide the network with a recommended reference signal (which may include a reference signal period) or adjustment time, so that the network device can dynamically or semi-statically configure the corresponding TCI adjustment switching information based on the terminal device's TCI status list update request or based on the TCI status switching capability supported by the terminal device.

[0169] S402a. The network device sends a first indication message to the terminal device, where the first indication message is used to indicate an update of the TCI status list.

[0170] Optionally, in an embodiment of the present application, the process of updating the TCI status list includes: adding a new TCI status to the TCI status list or deleting a TCI status in the TCI status list, therefore, when adding a new TCI status to the TCI status list, the first indication information carries the new TCI status to be added; when deleting a TCI status in the TCI status list, the first indication information carries the identifier of the TCI status to be deleted, so that the terminal device performs corresponding operations.

[0171] 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 perform TCI state switching adjustment work according to the reference signal of the first activated TCI state in the first TCI state list after processing the activation instruction.

[0172] S402b. The terminal device determines the first TCI status list based on the received first indication information.

[0173] S403. The terminal device determines the switching adjustment time of the TCI state according to the first TCI state list.

[0174] Exemplarily, after receiving the first indication information sent by the network device, the terminal device can update the TCI state list according to the information carried in the first indication information to generate a first TCI state list, and then determine the time for the terminal device to perform TCI state switching adjustment based on the nature of the first TCI state list (whether it is obtained based on the original activated TCI state list or a newly introduced activated TCI state list) and the period of the reference signal of the first activated TCI state included in the first TCI state list.

[0175] Optionally, in an embodiment of the present application, after the terminal device determines the switching adjustment time of the TCI state according to the first TCI state list, it may further include performing the following operations:

[0176] S404: Perform switching adjustment of the TCI state within the switching adjustment time.

[0177] Exemplarily, after the terminal device determines the first activated TCI state and processes the activation instruction of the first activated TCI state, it can perform TCI state switching adjustment work, for example, adjusting the new beam used to receive downlink information according to the reference signal of the first activated TCI state, and receiving and processing the first reference signal used, etc.

[0178] 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. This is not limited in actual applications and can be determined according to the needs of the terminal device.

[0179] S405: When the switching adjustment work is completed, starting from the end slot of the switching adjustment time, it is allowed to receive downlink information using the determined first activated TCI state.

[0180] Normally, the terminal device is able to complete the switching adjustment of the TCI state within the switching adjustment time. Specifically, before the end slot of the switching adjustment time, the processing for the activation instruction is completed, and the first reference signal is also processed. At this time, starting from the end slot of the switching adjustment time, the terminal device is allowed to use the determined first activated TCI state to receive downlink information.

[0181] Optionally, at the end slot of the switching adjustment time, the terminal device can receive the PDCCH with the new TCI state, and then determine the DCI of the scheduled PDSCH based on the received PDCCH. Optionally, the DCI can include the location and MCS information of the corresponding PDSCH, and can also indicate whether the data is a retransmission and the layer used for transmission, precoding and other related information. The specific implementation of the downlink information is not limited here.

[0182] In the TCI state list updating method provided in the embodiment of the present application, the network device sends the first indication information to the terminal device, the first indication information is used to update the TCI state list, the terminal device can determine the first TCI state list according to the first indication information, the first TCI state list includes: a first activated TCI state, the first activated TCI state includes reference signal configuration information, the reference signal configuration information is used to configure a short-period reference signal, and then the switching adjustment time of the TCI state can 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 of the first activated TCI state included in the first TCI state list is configured with a short period, the data transmission interruption of the current service cell during the TCI state switching is shortened, the switching efficiency is improved, and the throughput loss is reduced.

[0183] In a possible design of an embodiment of the present application, Figure 5 This is a flow chart of the second embodiment of the TCI status list updating method provided by this application. Figure 5 As shown, the above S401 can be implemented by the following steps:

[0184] S501. The network device obtains a configured activated TCI status list.

[0185] In an embodiment of the present application, the network device may first determine an existing configured activated TCI state list, which includes multiple activated TCI states, and then select at least one activated TCI state from all activated TCI states to form a first TCI state list.

[0186] S502: The network device determines the period of the reference signal of each activated TCI state in the configured activated TCI state list.

[0187] In actual 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 instruction, and the duration of adjusting the new beam is related to the period of the reference signal used by the terminal device, after the network device determines the configured activated TCI state list, it can first obtain the period of the reference signal of each activated TCI state in the configured activated TCI state list, thereby laying the foundation for subsequent updating of the activated TCI state list.

[0188] S503: The network device determines a list formed by the first activated TCI state in the configured activated TCI state list as a first TCI state list, where the reference signal of the first activated TCI state is a reference signal with the shortest period.

[0189] Exemplarily, in order to improve the TCI state switching efficiency on the terminal device side, the network device can select the first activated TCI state with the reference signal with the shortest period from the configured activated TCI state list, and then use these first activated TCI states to form a first TCI state list.

[0190] Specifically, from the network side, the network device can preconfigure or calibrate 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 as a reference signal (for example, SSB or CSI-RS) with a short period (such as 10ms), 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.

[0191] Generally, each reference signal can be configured with a periodic sequence, but each reference signal has only one minimum period. For example, the period of SSB can be configured to any of 10ms, 20ms, 40ms, 60ms, etc., but the minimum period configured is 10ms. The period of TRS can be configured to any of 20ms, 40ms, 60ms, 80ms, etc., but the minimum period configured is 20ms.

[0192] For example, if a certain operation takes 20ms, when using SSB with a period of 10ms, 2 reference signals are required for processing, and when using SSB with a period of 20ms, 1 reference signal is required for processing; when using TRS with a period of 20ms, only 1 TRS is required for processing.

[0193] Optionally, in actual applications, the selection priority of the reference signal and the corresponding period of the reference signal and the priority of using different reference signals can be set. For example, if a certain operation takes 20ms, and the reference signals that the terminal device can use include SSB and TRS, SSB has a higher priority than TRS, the shortest period of SSB is 10ms, and the shortest period of TRS is 20ms.

[0194] 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 can first select SSB as the reference signal to be used, and then use 2 SSBs with a period of 10ms for processing.

[0195] As another example, if the selection priority of the reference signal corresponding to the period is greater than the selection priority of the reference signal, the terminal device can first 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 TRS with a period of 20ms for processing.

[0196] It is understandable that, since the short period is less than the duration threshold, when the terminal device selects SSB as the reference signal to be 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. 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 needs, and will not be repeated here.

[0197] Accordingly, the above S403 can be implemented by the following steps:

[0198] S504: The terminal device determines, from the first TCI state list, a first activated TCI state having a reference signal with the shortest period.

[0199] In this embodiment, when the terminal device receives the first TCI state list sent by the network device, it can analyze the period of the reference signal of each TCI state in the first TCI state list, and then select the shortest period from the periods of all reference signals, and then determine the first activated TCI state of the reference signal with the shortest period.

[0200] It can be understood that the first activated TCI state is the target switching TCI state of the terminal device.

[0201] 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.

[0202] Optionally, if the terminal device supports the ability to quickly switch TCI states, after determining the first activated TCI state with the reference signal with the shortest period in the first TCI state list, it can determine the switching adjustment time of the TCI state based on the shortest period of the reference signal of the first activated TCI state.

[0203] Exemplarily, the following explanation is given by taking the existing SSB or CSI-RS TCI state configuration as an example. 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 period of the configured first activated TCI state can adopt the shortest period of the SSB period and CSI-RS period that have been configured on the current serving cell.

[0204] For example, Fig. 6A This is a schematic diagram of using 1 CSI-RS to determine the TCI state switching adjustment time in an embodiment of the present application. Figure 6B FIG. 1 is a schematic diagram of using multiple CSI-RS to determine the TCI state switching adjustment time in an embodiment of the present application. Fig. 6A and Figure 6B As shown, the terminal device receives the activation instruction in time slot n and HARQ +3ms) to complete the processing of the activation instruction, assuming that the terminal device has just missed a reference signal at this time. In the scenario diagram of this embodiment, since the shortest period of SSB is less than the shortest period of CSI-RS, the terminal device uses CSI-RS as the reference signal for the first activated TCI state, and uses the shortest period of CSI-RS to determine the switching adjustment time of the TCI state.

[0205] As an example, in Fig. 6A In the schematic diagram shown, the shortest period of 1 CSI-RS is used to determine the switching adjustment time of the TCI state. As another example, Figure 6B In the schematic diagram shown, the shortest period of x CSI-RS is used to determine the switching adjustment time of the TCI state, 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 thus, it needs to consume the adjustment time of multiple reference signal periods.

[0206] In the TCI state list updating method provided in the embodiment of the present application, the network device determines the period of the reference signal of each activated TCI state in the configured activated TCI state list according to the configured activated TCI state list, and then determines the list formed by the first TCI state with the reference signal with the shortest period in the configured activated TCI state list as the first TCI state list. Correspondingly, the terminal device can determine the first activated TCI state with 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 switching adjustment time of the TCI state is determined by the period of the reference signal with the shortest period. For example, the configured SSB period of the current cell is 80ms, and the shortest period of the adopted CSI-RS is 10ms, which significantly shortens the data transmission interruption of the current serving cell during the TCI state switching, improves the switching efficiency, and reduces the throughput loss, especially the loss of the PDCCH transmission rate.

[0207] In another possible design of the embodiment of the present application, Figure 7 This is a flow chart of the third embodiment of the TCI status list updating method provided by this application. Figure 7 As shown, the above S401 can be implemented by the following steps:

[0208] S701. The network device obtains a list of configured activated TCI states.

[0209] The specific implementation of this step is the same as above Figure 5 The specific implementation of S501 in the illustrated embodiment is the same and will not be repeated here.

[0210] S702: The network device determines a first activated TCI state from a configured activated TCI state list.

[0211] In this embodiment, the network device can 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 can subsequently use the first activated TCI state to receive downlink information.

[0212] S703: The network device is in the first activated TCI state and pre-configures a reference signal with a target period.

[0213] The target period is smaller than the duration threshold.

[0214] Optionally, the network device can use a reference signal with a fixed period, and thus can pre-configure a reference signal with a target period for the first activated TCI state, where the target period is a fixed duration and is less than a duration threshold, thereby shortening the duration for the terminal device to perform TCI state switching.

[0215] S704. The network device determines the activated TCI state list having the first activated TCI state as the first TCI state list.

[0216] 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 above-mentioned configured activated TCI state list to form a first TCI state list.

[0217] Accordingly, the above S403 can be implemented by the following steps:

[0218] S705. The terminal device determines a first activated TCI state of a reference signal having a target period from the first TCI state list.

[0219] Exemplarily, after receiving the first TCI state list, the terminal device can determine a 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.

[0220] S706: The terminal device determines the switching adjustment time of the TCI state based on the target period.

[0221] In this step, the terminal device can 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.

[0222] Optionally, in this embodiment, if Figure 7 As shown, the method may also include the following steps:

[0223] S707. The terminal device modifies the configuration period of the reference signal on the service cell where the terminal device is located according to the target period of the reference signal in the first activated TCI state.

[0224] 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 a fixed 20ms SSB, the terminal device can sample the fixed 20ms SSB to determine the adjustment switching time of the TCI state, and simultaneously modify the configuration period of the SSB on the serving cell in an associated manner. It is worth noting that this modification can be temporary, for example, only lasting for a fixed period of time such as 1s, or it can be continuous, which is not limited here.

[0225] Optionally, the fixed target period of the reference signal of the first activated TCI state may be indicated by the network device through a DCI instruction, or may be configured through a MAC CE instruction, specifically, by carrying an RS with the target period in a DCI instruction or a MAC CE instruction. The specific method for configuring the target period is not limited here.

[0226] For example, Figure 8 Schematic diagram of using a reference signal of a target period to determine the TCI state switching adjustment time in an embodiment of the present application. Figure 8 As shown, the terminal device receives the activation instruction in time slot n and HARQ +3ms) to complete the processing of the activation instruction, assuming that the terminal device has just missed a reference signal at this time. In the scenario diagram of this embodiment, the reference signal of the first activated TCI state is a SSB with a fixed 20ms. At this time, the terminal device uses a SSB with a fixed 20ms to determine the switching adjustment time of the TCI state.

[0227] The TCI state list updating method provided in the embodiment of the present application is that 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 reference signal with a target period for the first activated TCI state, and finally determines the activated TCI state list with the first activated TCI state as the first TCI state list. Correspondingly, the terminal device can determine the first activated TCI state with a reference signal with a target period from the first TCI state list, and then determine 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 period duration of the existing reference signal. Therefore, the data transmission interruption of the current service cell during the TCI state switching is significantly shortened, the switching efficiency is improved, and the throughput loss is reduced.

[0228] In another possible design of the embodiment of the present application, Fig. 9 This is a flow chart of the fourth embodiment of the TCI status list updating method provided by this application. Fig. 9 As shown, the above S401 can be implemented by the following steps:

[0229] S901. The network device configures a first activated TCI state for a terminal device.

[0230] In this embodiment, the network device configures the first activated TCI state for the terminal device based on the original activated TCI state list.

[0231] 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 (such as CSI-RS or TRS, etc.) configured with a short period (for example, 10ms), thereby shortening the switching adjustment time of the TCI state switching.

[0232] 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 a period duration of a reference signal of the target TCI state.

[0233] Exemplarily, if the reference signal of the first activated TCI state only supports TRS configured for fast switching, the first activated TCI state can be used to indicate that the time for switching the TCI state list is a fixed delay interval, specifically a fixed short delay interval (such as a switching adjustment time equal to 10ms) or not longer than 1 TRS cycle.

[0234] S902. The network device generates a first TCI state list according to the first activated TCI state.

[0235] Optionally, after the network device configures the first activated TCI state for the terminal device, it can generate a first TCI state list based on the first activated TCI state. The first TCI state list is different from the existing activated TCI state list, and the first TCI state list may be a newly introduced TCI state list.

[0236] 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, before generating a first TCI state list based on the first activated TCI state, it can also first configure the period length for the reference signal of the first activated TCI state, so that the terminal device can determine the switching adjustment time of the TCI state based on the period length of the reference signal.

[0237] Accordingly, the above S403 can be implemented by the following steps:

[0238] S903. When the terminal device determines 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.

[0239] Exemplarily, when the terminal device determines that the received first TCI state list is a newly configured activation TCI state list, it can determine that there is a first activation TCI state in the first TCI state list, and thus can determine the first activation TCI state in the first TCI state list based on the agreement between the network device and the terminal device.

[0240] S904. The terminal device determines a switching adjustment time of the TCI state according to the first activated TCI state.

[0241] When the terminal device obtains the first activated TCI state, it can determine the method for switching and adjusting the TCI state based on the reference signal information or agreed information of the first activated TCI state.

[0242] 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 determines the switching adjustment time of the TCI state according to the period of the reference signal of the first activated TCI state.

[0243] In this example, the reference signal of the first activated TCI state is a short-period reference signal. After receiving and detecting one or more reference signals, the terminal device can start receiving downlink information (e.g., PDCCH) using a new TCI state (first activated TCI state).

[0244] Fig.10 Schematic diagram of using one or more TRSs to determine the TCI state switching adjustment time in an embodiment of the present application. Fig. 6A , Figure 6B , Figure 8 The schematic diagram shown is similar to Fig.10 As shown, the terminal device receives the activation instruction in time slot n and HARQ +3ms) to complete the processing of the activation instruction, assuming that the terminal device has just missed a reference signal at this time. In the scenario diagram of this embodiment, the reference signal of the first activated TCI state is a TRS configured with a short period. At this time, the terminal device uses 1 or x TRSs to determine the switching adjustment time of the TCI state, where x is a positive integer greater than 1.

[0245] In this example, the period of the reference signal of the first activated TCI state in the newly configured activated TCI state list is shorter than the period of the reference signal of the TCI state in the original activated TCI state list. For example, the reference signal TRS of the first activated TCI state is shorter than the period of the existing SSB, which can significantly shorten the data transmission interruption caused by TCI state switching to the current service cell, improve the switching efficiency, and reduce throughput loss.

[0246] As another example, when the time for the first activated TCI state to indicate the switching of the TCI state list is a fixed delay interval, the specific implementation scheme of S904 is: according to the first activated TCI state, determine the fixed delay interval for the switching of the TCI state list, and according to the fixed delay interval, determine the switching adjustment time of the TCI state. 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.

[0247] In this example, if the reference signal of the first activated TCI state is a TRS that only supports configuration for 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 determine the switching adjustment time of the TCI state according to a fixed short delay interval (such as gap2=10ms) or not longer than 1 TRS cycle, and complete the switching adjustment of the TCI state as required within the switching adjustment time. Starting from the end time slot of the switching adjustment time, it allows the first activated TCI state to receive PDCCH.

[0248] Fig.11 FIG. 1 is a schematic diagram of using a fixed delay interval to determine the switching adjustment time of the TCI state in an embodiment of the present application. Fig.11 As shown, the terminal device also receives the activation instruction in time slot n and HARQ +3ms) to complete the processing of the activation instruction, assuming that the terminal device has just missed a reference signal. At this time, the terminal device uses a fixed short delay interval or no longer than 1 TRS cycle to perform the switching adjustment of the TCI state.

[0249] 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. However, for terminals that support the ability to quickly switch TCI states or support the ability to update the TCI state list, the switching adjustment work can be completed according to a fixed short delay interval or no longer than 1 TRS cycle, which improves the efficiency of TCI state switching and reduces throughput loss, especially the loss of PDCCH transmission rate.

[0250] The above describes the specific implementation of the TCI status list update method mentioned in the embodiment of the present application. The following is an embodiment of the device of the present application, which can be used to execute the method embodiment of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the method embodiment of the present application.

[0251] Fig.12 This is a schematic diagram of the structure of the first embodiment of the TCI status list updating device provided by the present application. The device can be integrated in a network device or implemented through a network device. Fig.12 As shown, the TCI status list updating device may include:

[0252] The processing module 1201 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 a short period reference signal;

[0253] The sending module 1202 is used to send a first indication message to the terminal device, where the first indication message is used to indicate updating the TCI status list.

[0254] Optionally, the period of the short-period reference signal is less than a duration threshold;

[0255] The duration threshold is a threshold pre-configured by the protocol and / or pre-defined by the protocol; or

[0256] The duration threshold is a threshold configured by the network device; or

[0257] The duration threshold is the threshold reported by the terminal device based on the supported TCI state switching capability.

[0258] In a possible design of this embodiment, the processing module 1201 is specifically used for:

[0259] Determine, according to the configured activated TCI state list, the period of the reference signal of each activated TCI state in the configured activated TCI state list;

[0260] A list formed by the 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.

[0261] In another possible design of this embodiment, the processing module 1201 is specifically configured to:

[0262] Determine a first activated TCI state from the configured activated TCI state list;

[0263] pre-configuring a reference signal having a target period for the first activated TCI state, wherein the target period is less than the duration threshold;

[0264] An activated TCI state list having the first activated TCI state is determined as the first TCI state list.

[0265] In another possible design of this embodiment, the processing module 1201 is specifically configured to:

[0266] Configuring a first activated TCI state for the terminal device;

[0267] The first TCI state list is generated according to the first activated TCI state.

[0268] Optionally, the processing module 1201 is further used to configure a period duration for the reference signal of the first activated TCI state.

[0269] In this example, the reference signal of the first activated TCI state includes any one of the following:

[0270] Channel state information reference signal CSI-RS, tracking reference signal TRS.

[0271] As another example, the first activated TCI state is used to indicate that the time for switching the TCI state list is a fixed delay interval;

[0272] The fixed delay interval is smaller than a duration threshold, or the fixed delay interval is smaller than a period duration of a reference signal of the target TCI state.

[0273] In another possible design of this embodiment, the processing module 1201 is further configured to determine a TCI state switching capability supported by the terminal device before determining the first TCI state list;

[0274] The processing module 1201 is used to determine the first TCI status list, specifically:

[0275] The processing module 1201 is specifically used to determine a first TCI state list according to the TCI state switching capability supported by the terminal device.

[0276] The TCI state switching capability includes: the capability of supporting fast switching of TCI states or the capability of supporting updating of the TCI state list.

[0277] In another possible design of this embodiment, the apparatus further includes: a receiving module 1203;

[0278] The receiving module 1203 is used to receive a TCI status list update request sent by the terminal device before the processing module 1201 determines the first TCI status list;

[0279] The processing module 1201 is specifically configured to determine a first TCI status list according to the TCI status list update request.

[0280] The TCI status list updating device provided in this embodiment is used to execute the technical solution on the network device side in the aforementioned method embodiment. Its implementation principle and technical effects are similar and will not be repeated here.

[0281] Fig.13 This is a schematic diagram of the structure of the second embodiment of the TCI status list updating device provided by this application. The device can be integrated in the terminal device or implemented by the terminal device. Fig.13 As shown, the TCI status list updating device may include:

[0282] The receiving module 1301 is configured to receive first indication information from a network device, where the first indication information is used to update a TCI status list;

[0283] The processing module 1302 is 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, 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;

[0284] The processing module 1302 is further used to determine the switching adjustment time of the TCI state according to the first TCI state list.

[0285] Wherein, the period of the short-period reference signal is less than the duration threshold;

[0286] The duration threshold is a threshold pre-configured by the protocol and / or pre-defined by the protocol; or

[0287] The duration threshold is a threshold configured by the network device; or

[0288] The duration threshold is the threshold reported by the terminal device based on the supported TCI state switching capability.

[0289] In a possible design of this embodiment, the processing module 1302 is specifically configured to:

[0290] Determining, from the first TCI state list, a first activated TCI state of a reference signal having a shortest period;

[0291] Based on the shortest period of the reference signal of the first activated TCI state, a switching adjustment time of the TCI state is determined.

[0292] In another possible design of this embodiment, the processing module 1302 is specifically configured to:

[0293] Determining, from the first TCI state list, a first activated TCI state of a reference signal having a target period, wherein the target period is less than the duration threshold;

[0294] Based on the target period of the reference signal of the first activated TCI state, a switching adjustment time of the TCI state is determined.

[0295] Optionally, the processing module 1302 is further used to modify the configuration period of the reference signal on the service cell where the terminal device is located according to the target period of the reference signal of the first activated TCI state.

[0296] In another possible design of this embodiment, the processing module 1302 is specifically configured to:

[0297] When it is determined that the first TCI state list is a newly configured activated TCI state list, determining a first activated TCI state in the first TCI state list;

[0298] According to the first activated TCI state, a switching adjustment time of the TCI state is determined.

[0299] As an 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:

[0300] The processing module 1302 is specifically used for:

[0301] Determining a period of a reference signal of the first activated TCI state;

[0302] The switching adjustment time of the TCI state is determined according to the period of the reference signal of the first activated TCI state.

[0303] As another 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:

[0304] The processing module 1302 is specifically used for:

[0305] Determine, according to the first activated TCI state, a fixed delay interval for TCI state list switching, wherein the fixed delay interval is less than a duration threshold, or the fixed delay interval is less than a period duration of a reference signal of the target TCI state;

[0306] According to the fixed delay interval, the switching adjustment time of the TCI state is determined.

[0307] In another possible design of this embodiment, it further includes: a sending module 1303;

[0308] The sending module 1303 is used to send the supported TCI state switching capability to the network device;

[0309] or

[0310] The sending module 1303 is used to send a TCI status list update request to the network device.

[0311] The TCI state switching capability includes: the capability of supporting fast switching of TCI states or the capability of supporting updating of the TCI state list.

[0312] In another possible design of this embodiment, the processing module 1302 is also used to perform switching adjustment of the TCI state within the switching adjustment time. When the switching adjustment work is completed, starting from the end slot of the switching adjustment time, it is allowed to receive downlink information using the determined first activated TCI state.

[0313] The TCI status list updating device provided in this embodiment is used to execute the technical solution on the terminal device side in the aforementioned method embodiment. Its implementation principle and technical effects are similar and will not be repeated here.

[0314] Fig.14 This is a schematic diagram of the structure of the network device embodiment provided by this application. Fig.14 As shown, the network device may include: a processor 1401, a memory 1402, a transceiver 1403, and an interface 1404 for communicating with a terminal device.

[0315] Among them, the memory 1402 stores computer-executable instructions;

[0316] The processor 1401 executes the computer execution instructions stored in the memory, so that the processor 1401 executes the technical solution on the network device side in the aforementioned method embodiment.

[0317] Fig.15 This is a schematic diagram of the structure of the terminal device embodiment provided by this application. Fig.15As shown, the terminal device may include: a processor 1501, a memory 1502, a transceiver 1503, and an interface 1504 for communicating with a network device.

[0318] Among them, the memory 1502 stores computer-executable instructions;

[0319] The processor 1501 executes the computer execution instructions stored in the memory, so that the processor 1501 executes the technical solution on the terminal device side in the aforementioned method embodiment.

[0320] Furthermore, an embodiment of the present application may also provide a communication system, which may include: a terminal device and a network device.

[0321] Among them, the terminal device may include the aforementioned Fig.13 The TCI status list updating device may be Fig.15 The terminal device and the network device may include the aforementioned Fig.12 The TCI status list updating device may be Fig.14 The network device.

[0322] It is understandable that the communication system may also include other devices, which may be determined according to actual scenarios and will not be described in detail here.

[0323] The present application also provides a computer-readable storage medium, in which computer execution instructions are stored. When the computer execution instructions are executed by a processor, they are used to implement the technical solution on the terminal device side in the aforementioned method embodiment.

[0324] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the technical solution on the network device side in the aforementioned method embodiment.

[0325] An embodiment of the present application also provides a program, which, when executed by a processor, is used to execute the technical solution on the terminal device side in the aforementioned method embodiment.

[0326] The embodiment of the present application also provides a program, which, when executed by a processor, is used to execute the technical solution on the network device side in the aforementioned method embodiment.

[0327] An embodiment of the present application also provides a computer program product, including program instructions, which are used to implement the technical solution on the terminal device side in the aforementioned method embodiment.

[0328] An embodiment of the present application also provides a computer program product, including program instructions, which are used to implement the technical solution on the network device side in the aforementioned method embodiment.

[0329] An embodiment of the present application also provides a chip, including: a processing module and a communication interface, wherein the processing module can execute the technical solution on the terminal device side in the aforementioned method embodiment.

[0330] Furthermore, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module enables the processing module to execute the technical solution on the terminal device side in the above method embodiment.

[0331] The embodiment of the present application also provides a chip, including: a processing module and a communication interface, wherein the processing module can execute the technical solution on the network device side in the aforementioned method embodiment.

[0332] Furthermore, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module enables the processing module to execute the technical solution on the network device side of the aforementioned method embodiment.

[0333] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0334] In the specific implementation of the above network equipment and terminal equipment, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor.

[0335] All or part of the steps of the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, the steps of the above-mentioned 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

1. A method for updating a transmission configuration indication (TCI) status list, characterized in that: include: 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-cycle reference signal.

2. The method according to claim 1, characterized in that The period of the short-period reference signal is less than a duration threshold; The duration threshold is a threshold pre-configured by the protocol and / or pre-defined by the protocol; or The duration threshold is a threshold configured by the network device; or The duration threshold is the threshold reported by the terminal device based on the supported TCI state switching capability.

3. The method according to claim 1, characterized in that The determining of the first TCI status list includes: Determine, according to the configured activated TCI state list, the period of the reference signal of each activated TCI state in the configured activated TCI state list; A list formed by the 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.

4. The method according to claim 2, characterized in that: The determining of the first TCI status list includes: Determine a first activated TCI state from the configured activated TCI state list; Preconfiguring, for the first activated TCI state, a reference signal having a target period, wherein the target period is less than the duration threshold; An activated TCI state list having the first activated TCI state is determined as the first TCI state list.

5. The method according to claim 1, characterized in that The determining of the first TCI status list includes: Configuring a first activated TCI state for the terminal device; The first TCI state list is generated according to the first activated TCI state.

6. The method according to claim 5, characterized in that The method further comprises: Configure a period duration for the reference signal of the first activated TCI state.

7. The method according to claim 5 or 6, characterized in that: 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.

8. The method according to claim 5, characterized in that 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 smaller than a duration threshold, or the fixed delay interval is smaller than a period of a reference signal of the first activated TCI state.

9. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: Determine the TCI state switching capabilities supported by the terminal device; The determining of the first TCI status list includes: Determine a first TCI state list according to the TCI state switching capability supported by the terminal device.

10. The method according to claim 9, characterized in that The TCI state switching capability includes: a capability of supporting fast switching of TCI states or a capability of supporting updating of a TCI state list.

11. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: Receive a TCI status list update request sent by a terminal device; The determining of the first TCI status list includes: A first TCI status list is determined according to the TCI status list update request.

12. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: A first indication message is sent to the terminal device, where the first indication message is used to indicate updating the TCI status list.

13. A method for updating a transmission configuration indication (TCI) status list, characterized in that: include: receiving first indication information from a network device, where the first indication information is used to update a TCI state list; Determine, according to the first indication information, 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; According to the first TCI state list, the switching adjustment time of the TCI state is determined.

14. The method according to claim 13, characterized in that The period of the short-period reference signal is less than a duration threshold; The duration threshold is a threshold pre-configured by the protocol and / or pre-defined by the protocol; or The duration threshold is a threshold configured by the network device; or The duration threshold is the threshold reported by the terminal device based on the supported TCI state switching capability.

15. The method according to claim 13, characterized in that The determining, according to the first TCI state list, a switching adjustment time of the TCI state includes: Determining, from the first TCI state list, a first activated TCI state having a shortest period reference signal; Based on the shortest period of the reference signal of the first activated TCI state, a switching adjustment time of the TCI state is determined.

16. The method according to claim 14, characterized in that The determining, according to the first TCI state list, a switching adjustment time of the TCI state includes: Determining, from the first TCI state list, a first activated TCI state having a target period reference signal, wherein the target period is less than the duration threshold; Based on the target period of the reference signal of the first activated TCI state, a switching adjustment time of the TCI state is determined.

17. The method according to claim 16, characterized in that The method further comprises: According to the target period of the reference signal of the first activated TCI state, modify the configuration period of the reference signal on the service cell where the terminal device is located.

18. The method according to claim 13, characterized in that The determining, according to the first TCI state list, a switching adjustment time of the TCI state includes: When it is determined that the first TCI state list is a newly configured activated TCI state list, determining a first activated TCI state in the first TCI state list; According to the first activated TCI state, a switching adjustment time of the TCI state is determined.

19. The method according to claim 18, characterized in that The determining, according to the first activated TCI state, a switching adjustment time of the TCI state includes: Determining a period of a 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.

20. The method according to claim 18, characterized in that The determining, according to the first activated TCI state, a switching adjustment time of the TCI state includes: Determine, according to the first activated TCI state, a fixed delay interval for TCI state list switching, wherein the fixed delay interval is less than a duration threshold, or the fixed delay interval is less than a period duration of a reference signal of the first activated TCI state; According to the fixed delay interval, the switching adjustment time of the TCI state is determined.

21. The method according to any one of claims 13 to 20, characterized in that: The method further comprises: Sending supported TCI state switching capabilities to the network device; or Send a TCI status list update request to the network device.

22. The method according to claim 21, characterized in that The TCI state switching capability includes: a capability of supporting fast switching of TCI states or a capability of supporting updating of a TCI state list.

23. The method according to any one of claims 13 to 20, characterized in that: The method further comprises: Performing a switching adjustment work of the TCI state within the switching adjustment time; When the handover adjustment work is completed, starting from the end slot of the handover adjustment time, it is allowed to receive downlink information using the determined first activated TCI state.

24. A transmission configuration indication TCI status list updating device, characterized in that: include: The processing module 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, and the reference signal configuration information is used to configure a short-cycle reference signal.

25. The device according to claim 24, characterized in that The period of the short-period reference signal is less than a duration threshold; The duration threshold is a threshold pre-configured by the protocol and / or pre-defined by the protocol; or The duration threshold is a threshold configured by the network device; or The duration threshold is the threshold reported by the terminal device based on the supported TCI state switching capability.

26. The device according to claim 24, characterized in that The processing module is specifically used for: Determine, according to the configured activated TCI state list, the period of the reference signal of each activated TCI state in the configured activated TCI state list; A list formed by the 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.

27. The device according to claim 25, characterized in that The processing module is specifically used for: Determine a first activated TCI state from the configured activated TCI state list; Preconfiguring, for the first activated TCI state, a reference signal having a target period, wherein the target period is less than the duration threshold; An activated TCI state list having the first activated TCI state is determined as the first TCI state list.

28. The device according to claim 24, characterized in that 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.

29. The device according to claim 28, characterized in that The processing module is further used to configure a period duration for the reference signal of the first activated TCI state.

30. The device according to claim 28 or 29, characterized in that 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.

31. The device according to claim 28, characterized in that 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 smaller than a duration threshold, or the fixed delay interval is smaller than a period duration of a reference signal of the first activated TCI state.

32. The device according to any one of claims 24 to 29, characterized in that The processing module is further used to determine the TCI state switching capability supported by the terminal device; The processing module is used to determine the first TCI status list, specifically: The processing module is specifically used to determine the first TCI state list according to the TCI state switching capability supported by the terminal device.

33. The device according to claim 32, characterized in that The TCI state switching capability includes: a capability of supporting fast switching of TCI states or a capability of supporting updating of a TCI state list.

34. The device according to any one of claims 24 to 29, characterized in that Also includes: Receiver module; The receiving module is used to receive a TCI status list update request sent by a terminal device; The processing module is specifically configured to determine a first TCI status list according to the TCI status list update request.

35. The device according to any one of claims 24 to 29, characterized in that Also includes: A sending module is used to send a first indication message to a terminal device, wherein the first indication message is used to indicate an update of a TCI status list.

36. A transmission configuration indication TCI status list updating device, characterized in that: include: A receiving module, configured to receive first indication information from a network device, wherein the first indication information is used to update a TCI status 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, 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 processing module is also used to determine the switching adjustment time of the TCI state according to the first TCI state list.

37. The device according to claim 36, characterized in that The period of the short-period reference signal is less than a duration threshold; The duration threshold is a threshold pre-configured by the protocol and / or pre-defined by the protocol; or The duration threshold is a threshold configured by the network device; or The duration threshold is the threshold reported by the terminal device based on the supported TCI state switching capability.

38. The device according to claim 36, characterized in that The processing module is specifically used for: Determining, from the first TCI state list, a first activated TCI state of a reference signal having a shortest period; Based on the shortest period of the reference signal of the first activated TCI state, a switching adjustment time of the TCI state is determined.

39. The device according to claim 37, characterized in that The processing module is specifically used for: Determining, from the first TCI state list, a first activated TCI state of a reference signal having a target period, wherein the target period is less than the duration threshold; Based on the target period of the reference signal of the first activated TCI state, a switching adjustment time of the TCI state is determined.

40. The device according to claim 39, characterized in that The processing module is also used to modify the configuration period of the reference signal on the service cell where the terminal device is located according to the target period of the reference signal of the first activated TCI state.

41. The device according to claim 36, characterized in that The processing module is specifically used for: When it is determined that the first TCI state list is a newly configured activated TCI state list, determining a first activated TCI state in the first TCI state list; According to the first activated TCI state, a switching adjustment time of the TCI state is determined.

42. The device according to claim 41, characterized in that The processing module is used 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 a period of a 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.

43. The device according to claim 41, characterized in that The processing module is used 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: Determine, according to the first activated TCI state, a fixed delay interval for TCI state list switching, wherein the fixed delay interval is less than a duration threshold, or the fixed delay interval is less than a period duration of a reference signal of the first activated TCI state; According to the fixed delay interval, the switching adjustment time of the TCI state is determined.

44. The device according to any one of claims 36 to 43, characterized in that Also includes: A sending module, used for sending the supported TCI state switching capability to the network device; or A sending module is used to send a TCI status list update request to the network device.

45. The device according to claim 44, characterized in that The TCI state switching capability includes: a capability of supporting fast switching of TCI states or a capability of supporting updating of a TCI state list.

46. ​​The device according to any one of claims 36 to 43, characterized in that The processing module is also used to perform the switching adjustment work of the TCI state within the switching adjustment time. When the switching adjustment work is completed, starting from the end time slot of the switching adjustment time, it is allowed to receive downlink information using the determined first activated TCI state.

47. A network device, characterized in that: include: Interfaces 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 performs the method according to any one of claims 1 to 12.

48. A terminal device, characterized in that: include: Interfaces for processors, memories, transceivers, and network devices to communicate; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 13 to 23.

49. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 12 when executed by a processor.

50. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method described in any one of claims 13 to 23.

51. A computer program product comprising: The program instruction is characterized in that when the program instruction is executed by a processor, it is used to implement the method as described in any one of claims 1 to 12 above.

52. A computer program product comprising: The program instruction is characterized in that when the program instruction is executed by a processor, it is used to implement the method as described in any one of claims 13 to 23.

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