WO2022141420A1

WO2022141420A1 - Method for switching transmission configuration indicator (tci) state and communication apparatus

Info

Publication number: WO2022141420A1
Application number: PCT/CN2020/142206
Authority: WO
Inventors: 赵泽涵; 李翔; 戴喜增; 李可
Original assignee: 华为技术有限公司
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-07-07
Also published as: CN116325616A

Abstract

Embodiments of the present application provide a method for switching a transmission configuration indicator (TCI) state and a communication apparatus. In this method, a terminal device receives first indication information for indicating a first duration set corresponding to the TCI state, wherein the first duration set comprises one or more switching durations, and the first duration set is obtained according to a second duration set; the second duration set comprises one or more switching durations, and the second duration set is reported to a network device by the terminal device; the terminal device completes the switching of the TCI state according to a first switching duration in the first duration set. Hence, when movement of the terminal device between different network devices needs to perform TCI state switching, a delay of the TCI state switching can be reduced.

Description

A method and communication device for transmission configuration indication TCI state switching

technical field

The present application relates to the field of wireless communication, and more particularly, to a method and a communication device for transmitting configuration indication TCI state switching.

Background technique

In some communication systems, in order to correctly receive the signal sent by the network device during the communication between the terminal device and the network device, the network device may indicate the transmission configuration indicator (TCI) status to the terminal device. By measuring the reference signal associated with the TCI state, the terminal device can obtain some necessary characteristics required to correctly receive the signal sent by the network device.

When the terminal device moves between different network devices, the network device may instruct the terminal device to switch the TCI state, and send and receive data according to the new TCI state. However, the current TCI state switching has the problem of a large delay.

Therefore, there is an urgent need to propose a method for reducing the TCI state switching delay.

SUMMARY OF THE INVENTION

The present application provides a method and a communication device for indicating TCI state switching by transmission configuration, which can reduce the delay of TCI state switching when a terminal device moves between different network devices and needs to perform TCI state switching.

In a first aspect, the present application provides a method for transmitting configuration indication TCI state switching. The method may be executed by a terminal device, or may also be executed by a chip configured in the terminal device, which is not limited in this application.

Specifically, the method includes: the terminal device receives first indication information, where the first indication information is used to indicate a first duration set corresponding to the TCI state, the first duration set includes one or more handover durations, and the The first duration set is obtained according to the second duration set, the second duration set includes one or more handover durations, and the second duration set is reported by the terminal device to the network device; according to the first duration set in the first duration set. For a switching duration, the TCI state is switched.

It can be seen that, through the above method, when the terminal device needs to perform TCI state switching when moving between different network devices, the terminal device receives the first switching duration in the first duration set indicated by the first indication information sent by the network device, and then the terminal device according to the The first switching duration switches the TCI state, which can reduce the delay of the TCI state switching.

With reference to the first aspect, in some possible implementation manners, the first duration set includes one switching duration, and the one switching duration is the first switching duration. That is to say, the first duration set includes only one switching duration, and the terminal device switches the TCI state according to the one switching duration.

It can be seen that when the terminal device is in some fixed service scenarios, the terminal device switches the TCI state according to a first switching duration in the first duration set, and does not need to receive additional instructions from the network device, which can save signaling overhead.

With reference to the first aspect, in some possible implementation manners, the first duration set includes multiple switching durations, and the first switching duration is one of the first duration sets. That is, the terminal device needs to determine one for switching the TCI state from multiple switching durations.

It can be seen that for different services of terminal equipment (such as ultra-reliable low-latency communication (URLLC) services or enhanced Mobile Broadband (eMBB) services, etc.), the corresponding terminal equipment receives the first There are multiple switching durations in a duration set, and the TCI state switching duration can be flexibly determined.

With reference to the first aspect, in some possible implementations, the first duration set is obtained according to the second duration set, including: the first duration set is obtained according to the second switching duration in the second duration set, The first switching duration in the first duration set is not less than the second switching duration.

It can be seen that different terminal devices can indicate different second duration sets to the network according to their own TCI state switching capabilities to ensure that the terminal device receives the first switching duration indicated by the network device within the capability range of the terminal device.

With reference to the first aspect, in some possible implementations, the second switching duration is obtained according to at least one of the following: a carrier frequency range, a subcarrier spacing, or a quasi-co-located QCL relationship corresponding to the TCI state.

It can be seen that the terminal device can uniquely determine the second handover duration according to information such as the carrier frequency range, the subcarrier interval, or the quasi-co-located QCL relationship corresponding to the TCI state indicated by the network device.

With reference to the first aspect, in some possible implementation manners, before the receiving the first indication information, the method further includes: reporting second indication information to the network device, where the second indication information is used to indicate the The second duration set is described.

It can be seen that different terminal devices can report the second indication information to the network according to their own TCI state switching capabilities, corresponding to different second duration sets for scheduling by the network device.

With reference to the first aspect, in some possible implementation manners, the switching the TCI state according to the first switching duration in the first duration set includes: receiving third indication information, where the third indication information It is used to indicate the first switching duration; determine the target switching duration according to the first switching duration and the first preset duration; and switch the TCI state according to the target switching duration.

It can be seen that, for different services of the terminal device (such as URLLC services or eMBB services, etc.), the corresponding terminal device receives multiple switching durations in the first duration set, and the terminal device can flexibly determine the TCI state switching duration by receiving further instructions from the network device.

With reference to the first aspect, in some possible implementations, the determining the target switching duration according to the first switching duration and the first preset duration includes: when the first switching duration is less than the first switching duration In the case of a preset duration, determine that the first switching duration is the target switching duration; in the case that the first switching duration is greater than or equal to the first preset duration, determine the first preset duration The duration is the target switching duration.

It can be seen that when the terminal device moves between different network devices and needs to perform TCI state switching, on the basis of the first preset duration, it is beneficial to reduce the delay of TCI state switching.

In a second aspect, the present application provides a method for transmitting configuration indication TCI state switching. The method may be executed by a network device, or may also be executed by a chip configured in the network device, which is not limited in this application.

Specifically, the method includes: the network device determines a first duration set according to a second duration set corresponding to the TCI state, where the first duration set includes one or more handover durations, and the second duration set includes one or more handover durations. multiple handover durations, the second duration set is reported by the terminal device to the network device; first indication information is sent, where the first indication information is used to indicate the first duration set, the first duration set in the first duration set A switching duration is used to switch the TCI state.

It can be seen that, through the above method, when the terminal device moves between different network devices and needs to perform TCI state switching, the network device indicates the first switching duration to the terminal device, and then the terminal device switches the TCI state according to the first switching duration, which can reduce the TCI state. handover delay.

It can be seen that the network device indicates the first switching duration to the terminal device, and then the terminal device switches the TCI state according to the first switching duration, which is beneficial to reduce the delay of TCI state switching.

With reference to the second aspect, in some possible implementation manners, the first duration set includes one switching duration, and the one switching duration is the first switching duration.

It can be seen that when the terminal device is in some fixed service scenarios, the network device indicates to the terminal device a first handover duration in the first duration set, and the network device does not need to send additional instructions to the terminal device, which can save signaling overhead.

With reference to the second aspect, in some possible implementation manners, the first duration set includes multiple switching durations, and the first switching duration is one of the first duration sets.

It can be seen that the network device can flexibly determine the TCI state switching duration according to different services of the terminal device (eg, URLLC service or eMBB service, etc.) and its own scheduling needs.

With reference to the second aspect, in some possible implementation manners, the first switching duration in the first duration set is not less than the second switching duration. Through this method, it can be ensured that the first switching duration indicated by the network device to the terminal device is within the capability range of the terminal device.

With reference to the second aspect, in some possible implementation manners, the determining the first duration set according to the second duration set corresponding to the TCI state includes: determining the first duration set according to the second duration set and at least one of the following In determining the second switching duration of the first duration set: carrier frequency range, subcarrier spacing or quasi-co-located QCL relationship corresponding to the TCI state; determining the first duration set according to the second switching duration.

It can be seen that the network device can uniquely determine the second handover duration according to information such as the carrier frequency range, the subcarrier interval, or the quasi-co-located QCL relationship corresponding to the TCI state indicated by the network device.

With reference to the second aspect, in some possible implementation manners, before the sending of the first indication information, the method further includes: receiving second indication information reported by the terminal device, where the second indication information is used to indicate the second duration set.

It can be seen that the network device receives the second indication information reported by the terminal device, which corresponds to the TCI state switching capability of the terminal device. The network device may flexibly determine the first indication information according to the TCI state switching capability.

With reference to the second aspect, in some possible implementation manners, after sending the first indication information, the method further includes: sending third indication information, where the third indication information is used to indicate the first duration A toggle duration in the collection.

It can be seen that different services of the terminal device (such as URLLC service or eMBB service, etc.) correspond to multiple switching durations in the first duration set indicated by the network device to the terminal device. The network device sends further instructions to the terminal device, which can flexibly determine the TCI The duration of the state transition.

In a third aspect, the present application further provides a communication device. The communication device may be a terminal or a network device, or a component in a terminal or a network device. The communication apparatus may include various modules or units for performing the method in the first aspect and any possible implementation manner of the first aspect; or, the communication apparatus may include the second aspect and any one of the second aspect. Each module or unit of the method in a possible implementation. The functions of the modules or units may be implemented by hardware, or by executing corresponding software by hardware.

In a possible design, the structure of the communication device may include a processing unit, and the processing unit is configured to support the communication device to perform the corresponding functions in the above method. The structure of the communication device may further include a communication unit, and the communication unit is used for supporting communication between the communication device and other devices. The communication device may also include a storage unit for coupling with the processing unit and the communication unit, which stores program instructions and data necessary for the communication device.

In an implementation manner, the communication apparatus performs the relevant operations of the terminal equipment in the first aspect, and the communication apparatus may include:

a communication unit, configured to receive first indication information; the first indication information is used to indicate a first duration set corresponding to the TCI state, the first duration set includes one or more handover durations, and the first duration The set is obtained according to a second set of durations, the second set of durations includes one or more handover durations, and the second set of durations is reported by the terminal device to the network device;

A processing unit, configured to switch the TCI state according to the first switching duration in the first duration set.

In addition, in this aspect, for other optional implementations of the communication apparatus, reference may be made to the relevant content of the above-mentioned first aspect, which will not be described in detail here.

In another implementation manner, the communication apparatus performs the relevant operations of the network device in the second aspect, and the communication apparatus may include:

a processing unit, configured to determine a first duration set according to a second duration set corresponding to the TCI state, where the first duration set includes one or more switching durations, and the second duration set includes one or more switching durations , the second duration set is reported by the terminal device to the network device;

A communication unit, configured to send first indication information, where the first indication information is used to indicate the first duration set.

In addition, in this aspect, for other optional implementations of the communication device, reference may be made to the relevant content of the second aspect above, which will not be described in detail here.

As an example, the communication unit may be a transceiver or an interface, the storage unit may be a memory, and the processing unit may be a processor.

In an implementation manner, the communication apparatus is a terminal or a network device. When the communication device is a terminal or a network device, the processing unit may be a processor; the communication unit may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip or a system of chips. The processing unit may also be embodied as a processing circuit or a logic circuit; the communication unit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit, etc. on the chip or chip system.

a transceiver, configured to receive first indication information, where the first indication information is used to indicate a first duration set corresponding to the TCI state, the first duration set includes one or more handover durations, the first duration The set is obtained according to a second set of durations, the second set of durations includes one or more handover durations, and the second set of durations is reported by the terminal device to the network device;

The processor is configured to switch the TCI state according to the first switching duration in the first duration set. The precoding matrix is a precoding matrix for M antenna groups; the M antenna groups are antenna groups corresponding to the N antennas of the terminal device; the N is an integer greater than or equal to 3, and the M is an integer greater than or equal to 2.

a processor, configured to determine a first duration set according to a second duration set corresponding to the TCI state, where the first duration set includes one or more switching durations, and the second duration set includes one or more switching durations , the second duration set is reported by the terminal device to the network device;

A transceiver, configured to send first indication information, where the first indication information is used to indicate the first duration set.

During implementation, the processor may be used to perform, for example, but not limited to, baseband related processing, and the transceiver may be used to perform, for example, but not limited to, radio frequency transceiving. The above-mentioned devices may be respectively arranged on chips that are independent of each other, or at least part or all of them may be arranged on the same chip. For example, processors can be further divided into analog baseband processors and digital baseband processors. Among them, the analog baseband processor can be integrated with the transceiver on the same chip, and the digital baseband processor can be set on a separate chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be integrated with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) on the same chip. Such a chip may be called a System on Chip. Whether each device is independently arranged on different chips or integrated on one or more chips often depends on the needs of product design. The embodiments of the present application do not limit the implementation form of the foregoing device.

In a fourth aspect, the present application further provides a processor for executing the method described in the first aspect or the second aspect. In the process of executing the method described in the first aspect or the second aspect, the process of sending the above information and receiving the above information in the above method can be understood as the process of the processor outputting the above information, and the process of the processor receiving the input. process of the above information. When outputting the above-mentioned information, the processor outputs the above-mentioned information to the transceiver for transmission by the transceiver. After the above-mentioned information is output by the processor, other processing may be required before reaching the transceiver. Similarly, when the processor receives the above-mentioned information input, the transceiver receives the above-mentioned information and inputs it into the processor. Furthermore, after the transceiver receives the above-mentioned information, the above-mentioned information may need to perform other processing before being input to the processor.

For the operations of transmitting, sending and receiving involved in the processor, if there is no special description, or if it does not contradict its actual function or internal logic in the relevant description, it can be more generally understood as the processor output and Receive, input, etc. operations, rather than transmit, transmit, and receive operations directly performed by radio frequency circuits and antennas.

In the implementation process, the above-mentioned processor may be a processor specially used to execute these methods, or may be a processor that executes computer instructions in a memory to execute these methods, such as a general-purpose processor. The above-mentioned memory can be a non-transitory (non-transitory) memory, such as a read-only memory (Read Only Memory, ROM), which can be integrated with the processor on the same chip, or can be set on different chips respectively. The embodiment does not limit the type of the memory and the setting manner of the memory and the processor.

In a fifth aspect, the present application provides a computer-readable storage medium for storing computer software instructions, and when the instructions are executed by a communication device, the method described in the first aspect or the second aspect is implemented.

In a sixth aspect, the present application further provides a computer program product comprising instructions which, when executed on a communication device, cause the communication device to perform the method described in the first or second aspect above.

A seventh aspect provides a chip system, which is applied in a communication device, characterized in that the chip system includes at least one processor, and when the program instructions are executed in the at least one processor, the above-mentioned first aspect or The second aspect and the method described in any one of the optional implementation manners of the first aspect or the second aspect can be implemented on any of the following devices: a terminal device and a network device.

In an eighth aspect, a communication system includes: the above-mentioned communication device. For example, the communication system includes: a terminal device and a network device, the terminal device executes the method described in the first aspect and the optional implementation manner of the first aspect, and the network device executes the optional implementation of the second aspect and the second aspect. method described in selected embodiments.

Description of drawings

FIG. 1 shows a schematic diagram of a communication system applicable to the TCI state switching method and the communication device according to the embodiment of the present application;

FIG. 2 shows a schematic diagram of another communication system applicable to the TCI state switching method and the communication device according to the embodiment of the present application;

3 is a schematic diagram of a TCI state switching method provided by an embodiment of the present application;

4 is a schematic flowchart of a TCI state switching method provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

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

7 is a schematic structural diagram of a chip provided by an embodiment of the present application;

Detailed ways

In order to better understand the TCI state switching method provided by the embodiment of the present application, a communication system to which the embodiment of the present application is applicable is described first.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex) , TDD), universal mobile telecommunication system (UMTS), fifth generation (5th generation, 5G) mobile communication system or new radio (NR), etc. The 5G mobile communication system may include a non-standalone (NSA, NSA) and/or an independent network (standalone, SA).

The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system. The communication system may also be a public land mobile network (PLMN), a device-to-device (D2D) network, a machine-to-machine (M2M) network, an internet of things (internet of things) , IoT) network or other networks. The IoT network may include, for example, the Internet of Vehicles. Among them, the communication methods in the Internet of Vehicles system are collectively referred to as V2X (X stands for anything). For example, the V2X communication includes: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication ) communication, vehicle-to-pedestrian (V2P) or vehicle-to-network (V2N) communication, etc.

The terminal equipment in the embodiments of the present application may also be referred to as: user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), access terminal, subscriber unit, subscriber station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, terminal device, wireless communication device, user agent or user equipment, etc.

The terminal device may be a device that provides voice/data connectivity to the user, such as a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, some examples of terminals are: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol , SIP) telephones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, automotive A device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc., are not limited in this embodiment of the present application.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiment of the present application, the terminal device may also be a terminal device in the IoT system. IoT is an important part of the future development of information technology. Interconnection, the intelligent network of the interconnection of things and things. In the embodiment of the present application, the IoT technology can achieve massive connections, deep coverage, and power saving of the terminal through, for example, a narrowband (narrow band) NB technology.

In addition, in the embodiment of the present application, the terminal device may also include sensors such as smart printers, train detectors, and gas stations, and the main functions include collecting data (part of terminal devices), receiving control information and downlink data of network devices, and sending electromagnetic waves. , to transmit uplink data to the network device.

In addition, the network device in this embodiment of the present application may be a device for communicating with terminal devices, and the network device may be an evolved NodeB (evolved NodeB, eNB or eNodeB) in an LTE system, or a cloud wireless access network A wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network in a future evolved PLMN network Devices, etc., are not limited in the embodiments of the present application.

The network device in this embodiment of the present application may be a device in a wireless network, for example, a radio access network (radio access network, RAN) node that accesses a terminal to the wireless network. At present, some examples of RAN nodes are: next-generation base station gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), home base station, baseband unit (baseband unit, BBU), or An access point (access point, AP) in a Wi-Fi system, etc.

In a network structure, a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node (CU). - RAN equipment for CP nodes) and user plane CU nodes (CU-UP nodes) and DU nodes.

In this embodiment of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. This hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU), and memory (also called main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiments of the present application do not specifically limit the specific structure of the execution body of the methods provided by the embodiments of the present application, as long as the program that records the codes of the methods provided by the embodiments of the present application can be executed to provide the methods provided by the embodiments of the present application. method to communicate. For example, the execution body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call a program and execute the program.

Additionally, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer readable device, carrier or media. For example, computer readable media may include, but are not limited to: magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, compact discs (CDs), digital versatile discs (DVDs) etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), card, stick or key drives, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

To facilitate understanding of the embodiments of the present application, a communication system applicable to the embodiments of the present application is first described in detail with reference to FIG. 1 and FIG. 2 .

FIG. 1 is a schematic diagram of a wireless communication system 100 suitable for an embodiment of the present application. As shown in FIG. 1 , the wireless communication system 100 may include at least one network device, such as the network device 111 shown in FIG. 1 , and the wireless communication system 100 may also include at least one terminal device, such as the terminal device 121 shown in FIG. 1 . to the terminal device 123. Both the network device and the terminal device can be configured with multiple antennas, and the network device and the terminal device can communicate using the multi-antenna technology.

Wherein, when the network device communicates with the terminal device, the network device can manage one or more cells, and there can be an integer number of terminal devices in one cell. Optionally, the network device 111 and the terminal device 121 to the terminal device 123 form a single-cell communication system, and the single cell may be recorded as cell #1. The network device 111 may be a network device in cell #1, or in other words, the network device 111 may serve a terminal device (eg, terminal device 121) in cell #1.

It should be noted that a cell can be understood as an area within the coverage range of a wireless signal of a network device.

FIG. 2 is another schematic diagram of a wireless communication system 200 suitable for an embodiment of the present application. As shown in FIG. 2 , the wireless communication system 200 may include at least one terminal device 203 and a plurality of network devices, such as a network device 201 and a network device 202 . The wireless communication system can be a scenario under a high-speed railway, where network devices are deployed on both sides of the railway. At this time, the terminal device needs to frequently switch the TCI state.

It should be understood that the above-mentioned FIG. 1 and FIG. 2 are only exemplary descriptions, and the present application is not limited thereto. For example, the embodiments of the present application can be applied to any communication system as long as there are at least two devices in the communication system.

In order to facilitate the understanding of the embodiments of the present application, firstly, several terms involved in the present application are briefly described.

1. Transmission configuration indicator (TCI) state: The TCI state is used to indicate the quasi co-location (QCL) relationship between the large-scale channel parameters of the data transmission process and one or two downlink reference signals. Therefore, based on the TCI state, the terminal can obtain the indication information of the channel large-scale parameter relationship of the received signal, and then demodulate the data carried by the signal based on the channel estimation. Each TCI state may include a serving cell index (ServeCellIndex), a bandwidth part (bandwidth part, BWP) identifier (identifier, ID), and a reference signal resource identifier.

2. Quasi co-located (QCL): A quasi co-located QCL relationship is used to indicate that multiple resources have one or more identical or similar communication characteristics. For example, if two antenna ports have a quasi-co-located QCL relationship, then the large-scale characteristics of the channel carrying a signal at one port can be inferred from the large-scale characteristics of the channel carrying a signal at the other port. Signals corresponding to antenna ports with a quasi-co-located QCL relationship have the same parameters, or the parameters of one antenna port can be used to determine the parameters of another antenna port with a quasi-co-located QCL relationship with that antenna port, or, two The antenna ports have the same parameters, or the parameter difference between the two antenna ports is smaller than a certain threshold. The parameters may include one or more of the following large-scale channel parameters: delay spread, Doppler spread, Doppler shift, average delay delay), average gain, spatial Rx parameters. Among them, the spatial receiving parameters may include the angle of arrival (Angle of arrival, AOA), the main angle of arrival (Dominant AoA), the average angle of arrival (Average AoA), the angle of arrival (Angle of departure, AOD), the channel correlation matrix, the angle of arrival Power Angle Spread Spectrum, Average AoD, Power Angle Spread Spectrum at Departure Angle, Transmit Channel Correlation, Receive Channel Correlation, Transmit Beamforming, Receive Beamforming, Spatial Channel Correlation, Spatial Filter, or, One or more of spatial filtering parameters, or, spatial receiving parameters, etc.

3. Duration: For example, but not limited to, it can be a symbol, frame, subframe, half frame, system frame, time slot, mini-slot, radio frame or transmission time interval (Transmission time interval, TTI), etc., this application implements Examples are not limited. In addition, the duration may also have other names, such as time, time, period, delay, and the like.

4. The first preset duration: the switching time of the maximum TCI state calculated and obtained by the network device according to certain parameters of the network device and the terminal device.

Exemplarily, as shown in FIG. 3 , the network device configures multiple TCI states for the terminal device, and before sending a media access control element (Media access control element, MAC-CE) command, only TCI#0 is activated, and the TCI #1 is known but not activated. The network sends a MAC-CE TCI state switching command at a certain time (n) to activate TCI#1. The terminal device can continue to send and receive data based on the original TCI state (TCI#0) within 3ms after receiving the command and sending a hybrid automatic repeat request (HARQ) feedback. After a period of time, the terminal device can start sending and receiving data based on the new TCI state (TCI#1) at the moment of n+T _HARQ +3ms+T _first-SSB +T _SSB-proc .

Wherein, T _HARQ is the time from sending the TCI state switching command to sending the HARQ feedback. For the physical downlink shared channel (PDSCH), the terminal device needs to feed back the data of each slot, indicating whether the data is received correctly;

3ms is the MAC-CE processing time;

After T _first-SSB completes MAC-CE decoding for the terminal device, after the above-mentioned T _HARQ +3ms, it needs to continue to wait until the arrival of the first SSB;

T _SSB-proc is the processing time after receiving the SSB.

In this embodiment of the present application, if the first switching duration corresponding to the TCI state is less than the first preset duration, the terminal device switches the TCI state according to the first switching duration; if the first switching duration corresponding to the TCI state is greater than the first preset duration , the terminal device switches the TCI state according to the first preset duration. With reference to FIG. 3 , the first preset duration may be T _first-SSB+ T _SSB-proc .

In addition, in order to facilitate understanding of the embodiments of the present application, the following points are described.

First, in the embodiments shown below, the first, the second, and various numbers are only used to distinguish for convenience of description, and are not used to limit the scope of the embodiments of the present application. For example, different switching durations, different duration sets, etc. are distinguished.

Second, "at least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (a) of a, b and c can represent: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a , b and c.

Third, in this embodiment of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain information (such as the configuration information described below) is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, but not limited to, it is possible to directly indicate the information to be indicated. information, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated may also be indicated indirectly by indicating other information, wherein there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be implemented by means of a pre-agreed (for example, a protocol stipulated) arrangement order of various information, so as to reduce the indication overhead to a certain extent.

Fourth, in the embodiments shown below, some scenarios are described by taking the scenario of an NR network in a wireless communication network as an example. It should be noted that the solutions in the embodiments disclosed in this application can also be applied to other wireless communication networks. , the corresponding names can also be replaced by the names of corresponding functions in other wireless communication networks.

Fifth, the embodiments disclosed herein will present various aspects, embodiments or features of the present application around a system including a plurality of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc., and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, combinations of these schemes can also be used.

Sixth, in the embodiments disclosed in this application, "of", "relevant" and "corresponding" may sometimes be used interchangeably. The meaning to be expressed is the same.

Hereinafter, the method for switching the TCI state provided by the embodiment of the present application is described in detail by taking the interaction process between the terminal device and the network device as an example.

At present, during communication between a terminal device and a network device, in order to correctly receive a signal sent by the network device, the network device may indicate the TCI status to the terminal. By measuring the reference signal associated with the TCI state, the terminal device can obtain some necessary characteristics required to correctly receive the signal sent by the network device. When the terminal device moves between different network devices, the network device may instruct the terminal device to switch the TCI state, and send and receive data according to the new TCI state. However, the current TCI state switching has the problem of a large delay. Therefore, there is an urgent need to propose a method for reducing the TCI state switching delay.

In view of this, the present application provides a TCI state switching method, by which the TCI state switching delay can be reduced.

The following describes the TCI state switching method provided by the embodiment of the present application with reference to FIG. 4 . It should be noted that the TCI state switching method provided by the present application can be applied to a wireless communication system, for example, the communication system 100 shown in FIG. 1 . Communication devices in the communication system may have a wireless communication connection relationship. For example, the

terminal devices

121 and 122 shown in FIG. 1 may respectively have a wireless communication connection relationship with the network device 111, which is not limited in this embodiment of the present application.

Please refer to FIG. 4 , which is a schematic flowchart of a method 400 for TCI state switching provided by an embodiment of the present application, shown from the perspective of device interaction. As shown in FIG. 4 , the method 400 shown in FIG. 4 may include steps 410 to 450 . Among them, step 410 and step 450 are optional steps. The steps in the method 400 will be described in detail below with reference to the accompanying drawings.

Step 410, the terminal device reports the second indication information. Correspondingly, the network device receives the second indication information.

The second indication information is used to indicate the second duration set corresponding to the TCI state.

Optionally, the second indication information may be existing signaling. For example, but not limited to, the second indication information may be a radio resource control (radio resource control, RRC) message, a media access control element (Media access control element, MAC-CE) and downlink control signaling (Downlink control information, DCI) ) one or more of . Optionally, the second indication information may also be a certain field in the existing signaling, for example, a field in the RRC signaling, and the second duration set is indicated by a certain field in the RRC signaling.

It should be understood that the RRC message, the MAC-CE and the DCI are only examples for ease of understanding, and should not constitute any limitation to the present application. The present application does not exclude the possibility that the second indication information is other signaling, nor does it exclude the possibility of defining other names for the above signaling. Besides, the second indication information may be carried in one or more of physical layer signaling and high layer signaling. This application does not limit this.

Optionally, the second indication information may be newly added signaling, and the second duration set is indicated by the newly added signaling.

Optionally, the second duration set includes one or more handover durations, and the second duration set is reported by the terminal device to the network device.

It can be understood that step 410 is an optional step. In a possible implementation manner, the terminal reports the second indication information every time it accesses the network device. In another possible implementation manner, when the network device needs to obtain the TCI state switching time, the terminal device can actively report the second indication information, or the network device can send a request message to the terminal device, and the terminal device receives the request message. Then report the second indication information.

Step 420, the network device determines the first duration set according to the second duration set corresponding to the TCI state.

Optionally, the network device determines the first duration set according to the second duration set corresponding to the TCI state, including: determining the second handover duration used to determine the first duration set according to the second duration set and at least one of the following: carrier frequency The quasi-co-located QCL relationship corresponding to the range, the subcarrier spacing or the TCI state; the first duration set is determined according to the second handover duration.

That is to say, the second switching duration is obtained according to at least one of a carrier frequency range, a subcarrier interval, or a quasi-co-located QCL relationship corresponding to a TCI state. The terminal device reports the second indication information to the network device, and indicates the index of the second duration set through the second indication information, and the network device determines the second switching duration according to its own needs.

It can be understood that in the current NR protocol, the carrier frequency range is divided into two different types: FR1 and FR2. The frequency range corresponding to FR1 is 410MHz to 7125MHz, and the frequency range corresponding to FR2 is 24250MHz to 52600MHz. The embodiments of the present application only use FR1 and FR2 in the current NR standard for exemplary description. During the continuous evolution of the standard, the carrier frequency range may have different variations, which are not limited in the embodiments of the present application.

It can be understood that the subcarrier interval is determined by the network device, or pre-agreed in a predefined manner.

In a possible implementation manner, the second switching duration is obtained according to the carrier frequency range. As shown in Table 1, the indexes of the second duration set are capability1, capability2, and capability3. The second duration set corresponding to capability1 is {1,2}, the second duration set corresponding to capability2 is {2,4}, and the second duration set corresponding to capability3 is {3,8}.

Table 1

单位：slotUnit: slot	capability1capability1	capability2capability2	capability3capability3
FR1FR1	11	22	33
FR2FR2	22	44	88

Optionally, when the second duration set corresponding to capability1 is {1,2}, if the network device determines that the carrier frequency range used is FR1 according to its own needs, the second switching duration is 1 slot; The carrier frequency range to be used is determined to be FR2 according to its own needs, and the second switching duration is 2 slots.

Optionally, in the case where the second duration set corresponding to capability2 is {2,4}, if the network device determines that the carrier frequency range used is FR1 according to its own needs, the second switching duration is 2 slots; The carrier frequency range to be used is determined to be FR2 according to its own needs, and the second switching duration is 4 slots.

Optionally, when the second duration set corresponding to capability3 is {3,8}, if the network device determines that the carrier frequency range used is FR1 according to its own needs, the second switching duration is 3 slots; The carrier frequency range to be used is determined to be FR2 according to its own needs, and the second switching duration is 8 slots.

It is understandable that the second switching duration included in the second duration set may have different values in different scenarios. Table 1 is only an exemplary description for facilitating understanding of the embodiments of the present application, and the embodiments of the present application do not make any description of this. limited.

In another possible implementation manner, the second switching duration is obtained according to the quasi-co-located QCL relationship corresponding to the TCI state. As shown in Table 2, the indices of the second duration set are capability1, capability2, and capability3. The second duration set corresponding to capability1 is {1,2}, the second duration set corresponding to capability2 is {2,4}, and the second duration set corresponding to capability3 is {3,8}.

Table 2

单位：slotUnit: slot	capability1capability1	capability2capability2	capability3capability3
QCL type AQCL type A	11	22	33
QCL type A+DQCL type A+D	22	44	88

Optionally, when the second duration set corresponding to capability1 is {1,2}, if the network device determines according to its own needs that the quasi-co-located QCL relationship corresponding to the TCI state is QCL type A, the second switching duration is 1. If the network device determines that the quasi-co-located QCL relationship corresponding to the TCI state is QCL type A+D according to its own needs, the second switching duration is 2 slots.

Optionally, when the second duration set corresponding to capability2 is {2,4}, if the network device determines according to its own needs that the quasi-co-located QCL relationship corresponding to the TCI state is QCL type A, the second switching duration is 2. If the network device determines that the quasi-co-located QCL relationship corresponding to the TCI state is QCL type A+D according to its own needs, the second switching duration is 4 slots.

Optionally, when the second duration set corresponding to capability3 is {3,8}, if the network device determines according to its own needs that the quasi-co-located QCL relationship corresponding to the TCI state is QCL type A, the second switching duration is 3. If the network device determines according to its own needs that the quasi-co-located QCL relationship corresponding to the TCI state is QCL type A+D, the second switching duration is 8 slots.

It can be understood that QCL type A and QCL type A+D in Table 2 are only examples, and QCL type A can also be replaced by QCL type B, QCL type C, QCL type A+B, QCL type A+C, QCL type B+C, QCL type A+D can also be replaced with QCL type D, QCL type B+D, QCL type C+D. There may also be other quasi-co-located QCL relationships, such as QCL type E, and QCL type E can be combined with any one or more of the above-mentioned quasi-co-located QCL relationships to implement the technical solution, which is not limited in the embodiments of the present application.

In another possible implementation manner, the second switching duration is obtained according to the subcarrier spacing. As shown in Table 3, the subcarrier spacing includes: 15 kHz, 30 kHz, 60 kHz, and 120 kHz, and the indices of the second duration set are capability1, capability2, and capability3. Among them, the second duration set corresponding to capability1 is {1,2,4,8}, the second duration set corresponding to capability2 is {2,4,8,16}, and the second duration set corresponding to capability3 is {3,6 , 12, 24}.

table 3

Optionally, when the second duration set corresponding to capability1 is {1, 2, 4, 8}, if the SCS determined by the network device according to its own needs is 15 kHz, the second switching duration is 1 slot; If the SCS determined by the device according to its own needs is 30 kHz, the second switching duration is 2 slots. If the SCS determined by the network device according to its own needs is 60 kHz, the second switching duration is 4 slots; The SCS is 120kHz, and the second switching duration is 8 slots.

It can be understood that the second duration set {2,4,8,16} corresponding to capability2 and the second duration set {3,6,12,24} corresponding to capability3 and the second duration set corresponding to capability1 are {1,2 ,4,8} are the same and will not be repeated here.

It can be understood that the above-mentioned subcarrier spacings of 15 kHz, 30 kHz, 60 kHz and 120 kHz are only examples, and may also be 240 kHz, 480 kHz, and other possible forms, which are not limited in this embodiment of the present application.

In another possible implementation manner, the second switching duration is obtained according to the carrier frequency range and the subcarrier spacing. As shown in Table 4, the subcarrier spacing includes: 15 kHz, 30 kHz, 60 kHz, and 120 kHz, and the indices of the second duration set are capability1, capability2, and capability3. Among them, the second duration set corresponding to capability1 is {1,1,2,9,16}, the second duration set corresponding to capability2 is {2,2,4,18,32}, and the second duration set corresponding to capability3 is {3,3,4,32,32}.

Table 4

Optionally, when the second duration set corresponding to capability1 is {1,1,2,9,16}, if the network device determines the carrier frequency range to be used according to its own needs as FR1, the SCS determined in FR1 is 15kHz, then the second switching duration is 1 slot; if the SCS determined in FR1 is 30kHz, then the second switching duration is 1 slot; if the SCS determined in FR1 is 60kHz, then the second switching duration is 2 slots; If the carrier frequency range determined by the network device according to its own needs is FR2, and the SCS determined in FR2 is 60 kHz, the second handover duration is 9 slots; the SCS determined in FR2 is 120 kHz, then the second handover duration is 16 slots a slot.

It can be understood that the second duration set {2, 2, 4, 18, 32} corresponding to capability2 and the second duration set {3, 3, 4, 32, 32} corresponding to capability3 and the second duration set corresponding to capability1 are: {1,1,2,9,16} are the same and will not be repeated here.

In another possible implementation manner, the second switching duration is obtained according to the quasi-co-located QCL relationship and the subcarrier spacing corresponding to the TCI state. As shown in Table 5, the subcarrier spacing includes: 15 kHz, 30 kHz, 60 kHz, and 120 kHz, and the indices of the second duration set are capability1, capability2, and capability3. Among them, the second duration set corresponding to capability1 is {1,1,2,9,16}, the second duration set corresponding to capability2 is {2,2,4,18,32}, and the second duration set corresponding to capability3 is {3,3,4,32,32}.

table 5

Optionally, when the second duration set corresponding to capability1 is {1,1,2,9,16}, if the quasi-co-located QCL relationship determined by the network device according to its own needs is QCL type A, in QCL type A If the SCS determined in QCL type A is 15kHz, then the second switching duration is 1 slot; if the SCS determined in QCL type A is 30kHz, then the second switching duration is 1 slot; if the SCS determined in QCL type A is 60kHz, then The second switching duration is 2 slots; if the quasi-co-located QCL relationship determined by the network device according to its own needs is QCL type A+D, and the SCS determined in QCL type A+D is 60kHz, then the second switching duration is 9 slots slot; the SCS determined in QCL type A+D is 120kHz, and the second switching duration is 16 slots.

It can be understood that QCL type A and QCL type A+D in Table 5 are only examples, and QCL type A can also be replaced by QCL type B, QCL type C, QCL type A+B, QCL type A+C, QCL type B+C, QCL type A+D can also be replaced with QCL type D, QCL type B+D, QCL type C+D. In subsequent standard changes, there may be other quasi-co-located QCL relationships, such as QCL type E. QCL type E can be combined with any one or more of the above-mentioned quasi-co-located QCL relationships to realize the technical solution. The embodiment does not limit this.

Step 430, the terminal device receives the first indication information. Correspondingly, the network device sends the first indication information.

The first indication information is used to indicate the first duration set corresponding to the TCI state. The first duration set is obtained according to the second duration set, and the first duration set includes one or more switching durations.

Optionally, the first indication information may be existing signaling or newly added signaling, and reference may be made to the description of the second indication information in step 410, which will not be repeated here.

Optionally, the first duration set is obtained according to the second duration set, including: the first duration set is obtained according to the second switching duration in the second duration set, and the first switching duration in the first duration set is not less than the second switching duration. duration. Wherein, the second switching duration is obtained according to at least one of the quasi-co-located QCL relationship corresponding to the carrier frequency range, the subcarrier interval or the TCI state, and reference may be made to the relevant description in step 420, and details are not repeated here.

Step 440, the terminal device switches the TCI state according to the first switching duration in the first duration set.

Optionally, the first duration set includes a switching duration, and the one duration is the first switching duration. At this time, the terminal device switches the TCI state according to a switching duration indicated by the first indication information.

Optionally, the first duration set includes multiple switching durations, and the first switching duration is one of the first duration sets. At this time, the terminal device receives the third indication information, that is, executes step 450, indicates the first handover duration from the plurality of handover durations through the third indication information, and determines the target handover duration according to the first handover duration and the first preset duration , according to the target switching duration, switch the TCI state.

Optionally, determining the target switching duration according to the first switching duration and the first preset duration includes: when the first switching duration is less than the first preset duration, determining the first switching duration as the target switching duration; When the switching duration is greater than or equal to the first preset duration, the first preset duration is determined as the target switching duration. And switch the TCI state according to the target switching duration.

In the above, the method provided by the embodiment of the present application is described in detail with reference to FIG. 4 . Hereinafter, the communication apparatus provided by the embodiments of the present application will be described in detail with reference to FIG. 5 to FIG. 7 .

Please refer to FIG. 5 , which is a schematic block diagram of a communication apparatus 500 provided by an embodiment of the present application. The communication apparatus 500 corresponds to the terminal equipment or the network equipment in the above-mentioned uplink transmission method. Optionally, the communication apparatus 500 may include, but is not limited to, a communication unit 501 and a processing unit 502 .

In a possible design, the communication apparatus 500 may perform the relevant operations of the above-mentioned terminal equipment, and the communication apparatus may include:

The communication unit 501 is configured to receive first indication information, wherein the first indication information is used to indicate a first duration set corresponding to the TCI state, the first duration set includes one or more switching durations, the The first duration set is obtained according to the second duration set, the second duration set includes one or more handover durations, and the second duration set is reported by the terminal device to the network device;

The processing unit 502 is configured to switch the TCI state according to the first switching duration in the first duration set.

For other optional implementations of the communication device, reference may be made to the relevant content in the method 400 in the above method embodiment, which will not be described in detail here.

In another possible design, the communication apparatus 500 may perform the above-mentioned related operations of the network equipment, and the communication apparatus may include:

The processing unit 502 is configured to determine a first duration set according to a second duration set corresponding to the TCI state; wherein the first duration set includes one or more handover durations, and the second duration set includes one or more a handover duration, the second duration set is reported by the terminal device to the network device;

The communication unit 501 is configured to send first indication information, where the first indication information is used to indicate the first duration set.

For other optional implementations of the communication device, reference may be made to the related content described in the method 400 in the above method embodiment, which will not be described in detail here.

Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication apparatus 600 may be a network device, a terminal device, a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip or a chip system that supports the terminal device to implement the above method. , or processor, etc. The apparatus can be used to implement the methods described in the foregoing method embodiments, and for details, reference may be made to the descriptions in the foregoing method embodiments.

The communication apparatus may include one or more processors 601 . The processor 601 may be a general-purpose processor or a special-purpose processor, or the like. For example, it may be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, process software program data.

Optionally, the communication apparatus 600 may include one or more memories 602, and instructions 604 may be stored thereon, and the instructions may be executed on the processor 601, so that the communication apparatus 600 executes the above method methods described in the examples. Optionally, the memory 602 may also store data. The processor 601 and the memory 602 can be provided separately or integrated together.

Optionally, the communication apparatus 600 may further include a transceiver 605 and an antenna 606 . The transceiver 605 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 605 may include a receiver and a transmitter, the receiver may be called a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be called a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

In a possible design, the communication device 600 is a network device, or a device, circuit, etc. in the network device:

The processor 601 is configured to determine the first duration set according to the second duration set;

The transceiver 605 is configured to send first indication information, where the first indication information is used to indicate the first duration set corresponding to the TCI state.

In another possible design, the communication apparatus 600 is a terminal device, or a device, circuit, etc. in the terminal device.

The processor 601 is configured to switch the TCI state according to the first switching duration in the first duration set;

The transceiver 605 is configured to report second indication information, where the second indication information is used to indicate the second duration set corresponding to the TCI state.

Optionally, the communication apparatus 600 may also perform related operations in the foregoing method embodiments, which will not be described in detail here.

In a possible design, the processor 601 may include a transceiver for implementing the functions of receiving and transmitting. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. Transceiver circuits, interfaces or interface circuits used to implement receiving and transmitting functions may be separate or integrated. The above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transmission.

In another possible design, optionally, the processor 601 may store an instruction 603, and the instruction 603 runs on the processor 601, so that the communication apparatus 600 can execute the method described in the foregoing method embodiment. The instructions 603 may be hardened in the processor 601, in which case the processor 601 may be implemented by hardware.

In another possible design, the communication apparatus 600 may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in the embodiments of the present application may be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuits board (printed circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be fabricated using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in the embodiments of the present application is not limited thereto, and the structure of the communication device may not be limited by FIG. 6 . The communication apparatus may be a stand-alone device or may be part of a larger device. For example, the communication means may be:

(1) Independent integrated circuit IC, or chip, or, chip system or subsystem;

(2) A set with one or more ICs, optionally, the IC set may also include a storage component for storing data and instructions;

(3) ASIC, such as modem (MSM);

(4) Modules that can be embedded in other equipment;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handsets, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6) Others, etc.

For the case that the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in FIG. 7 . The chip 700 shown in FIG. 7 includes a processor 701 and an interface 702 . The number of processors 701 may be one or more, and the number of interfaces 702 may be multiple.

In a possible design, for the case where the chip is used to implement the function of the network device in the embodiment of the present application:

The processor 701 is configured to perform the relevant operations of S420 in the method 400;

The interface 702 is used for performing the relevant operations of S430 or S450 in the method 400 .

In a possible design, for the case where the chip is used to implement the functions of the terminal device in the embodiment of the present application:

The processor 701 is configured to perform the relevant operations of S440 in the method 400;

The interface 702 is used to perform the related operations of S410 in the method 400 .

Optionally, the chip further includes a memory 703, and the memory 703 is used to store necessary program instructions and data of the terminal device or the network device.

Optionally, the chip may also perform related operations in the foregoing method embodiments, which will not be described in detail here.

Those skilled in the art can also understand that various illustrative logical blocks (illustrative logical blocks) and steps (steps) listed in the embodiments of the present application may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be construed as exceeding the protection scope of the embodiments of the present application.

The present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, implements the functions of any of the foregoing method embodiments.

The present application also provides a computer program product, which implements the functions of any of the above method embodiments when the computer program product is executed by a computer.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks, SSD)) etc.

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

Claims

A method for transmitting configuration indication TCI state switching, comprising:

Receive first indication information, where the first indication information is used to indicate a first duration set corresponding to the TCI state, the first duration set includes one or more handover durations, and the first duration set is based on the second duration Obtaining a set, the second duration set includes one or more handover durations, and the second duration set is reported by the terminal device to the network device;

The TCI state is switched according to the first switching duration in the first duration set.
The method according to claim 1, wherein the first duration set includes one switching duration, and the one switching duration is the first switching duration.
The method according to claim 1, wherein the first duration set includes a plurality of switching durations, and the first switching duration is one of the first duration sets.
The method according to any one of claims 1-3, wherein the first duration set is obtained according to the second duration set, comprising:

The first duration set is obtained according to the second switching duration in the second duration set, and the first switching duration in the first duration set is not less than the second switching duration.
The method according to claim 4, wherein the second switching duration is obtained according to at least one of the following:

The carrier frequency range, the subcarrier spacing, or the quasi-co-located QCL relationship corresponding to the TCI state.
The method according to any one of claims 1-5, wherein before the receiving the first indication information, the method further comprises:

Reporting second indication information to the network device, where the second indication information is used to indicate the second duration set.
The method according to any one of claims 1-6, wherein the switching the TCI state according to the first switching duration in the first duration set comprises:

receiving third indication information, where the third indication information is used to indicate the first switching duration;

determining the target switching duration according to the first switching duration and the first preset duration;

The TCI state is switched according to the target switching duration.
The method according to claim 7, wherein the determining the target switching duration according to the first switching duration and the first preset duration comprises:

In the case that the first switching duration is less than the first preset duration, determining that the first switching duration is the target switching duration;

In the case that the first switching duration is greater than or equal to the first preset duration, it is determined that the first preset duration is the target switching duration.
A method for transmitting configuration indication TCI state switching, comprising:

Determine a first duration set according to a second duration set corresponding to the TCI state, where the first duration set includes one or more switching durations, the second duration set includes one or more switching durations, and the second duration set includes one or more switching durations. The duration set is reported by the terminal device to the network device;

Send first indication information, where the first indication information is used to indicate the first duration set, and the first switching duration in the first duration set is used to switch the TCI state.
The method according to claim 9, wherein the first duration set includes one switching duration, and the one switching duration is the first switching duration.
The method according to claim 9, wherein the first set of durations comprises a plurality of switching durations, and the first switching duration is one of the first set of durations.
The method according to any one of claims 9-11, wherein the first switching duration in the first duration set is not less than the second switching duration.
The method according to any one of claims 9-12, wherein the determining the first set of durations according to the second set of durations corresponding to the TCI states comprises:

determining the second handover duration for determining the first duration set according to the second duration set and at least one of the following: a carrier frequency range, a subcarrier spacing, or a quasi-co-located QCL relationship corresponding to the TCI state;

According to the second switching duration, the first duration set is determined.
The method according to any one of claims 9-13, wherein before the sending the first indication information, the method further comprises:

Receive second indication information reported by the terminal device, where the second indication information is used to indicate the second duration set.
The method according to any one of claims 10-14, wherein after sending the first indication information, the method further comprises:

Send third indication information, where the third indication information is used to indicate the first switching duration in the first duration set.
A device for indicating TCI state switching by transmission configuration, comprising:

a communication unit, configured to receive first indication information, where the first indication information is used to indicate a first duration set corresponding to the TCI state, the first duration set includes one or more handover durations, the first duration The set is obtained according to a second set of durations, the second set of durations includes one or more handover durations, and the second set of durations is reported by the terminal device to the network device;

A processing unit, configured to switch the TCI state according to the first switching duration in the first duration set.
The apparatus according to claim 16, wherein the first duration set includes one switching duration, and the one switching duration is the first switching duration.
The apparatus according to claim 16, wherein the first set of durations includes a plurality of switching durations, and the first switching duration is one of the first set of durations.
The device according to any one of claims 16-18, characterized in that,

The first duration set is obtained according to the second switching duration in the second duration set, and the first switching duration in the first duration set is not less than the second switching duration.
The device according to claim 19, wherein the second switching duration is obtained according to at least one of the following:

The carrier frequency range, the subcarrier spacing, or the quasi-co-located QCL relationship corresponding to the TCI state.
The device according to any one of claims 16-20, wherein the communication unit is further configured to:

Before receiving the first indication information, report second indication information to the network device, where the second indication information is used to indicate the second duration set.
The device according to any one of claims 16-21, wherein the processing unit is configured to:

receiving third indication information, where the third indication information is used to indicate the first switching duration;

determining the target switching duration according to the first switching duration and the first preset duration;

The TCI state is switched according to the target switching duration.
The apparatus according to claim 22, wherein the processing unit is configured to:

In the case that the first switching duration is less than the first preset duration, determining that the first switching duration is the target switching duration;

In the case that the first switching duration is greater than or equal to the first preset duration, it is determined that the first preset duration is the target switching duration.
A device for indicating TCI state switching by transmission configuration, comprising:

a processing unit, configured to determine a first duration set according to a second duration set corresponding to the TCI state, where the first duration set includes one or more switching durations, and the second duration set includes one or more switching durations , the second duration set is reported by the terminal device to the network device;

A communication unit, configured to send first indication information, where the first indication information is used to indicate the first duration set, and the first switching duration in the first duration set is used to switch the TCI state.
The apparatus according to claim 24, wherein the first set of durations comprises one switching duration, and the one switching duration is the first switching duration.
The apparatus according to claim 24, wherein the first duration set includes a plurality of switching durations, and the first switching duration is one of the first duration sets.
The apparatus according to any one of claims 24-26, wherein the first switching duration in the first duration set is not less than the second switching duration.
The device according to any one of claims 24-27, wherein the processing unit is configured to:

determining the second handover duration for determining the first duration set according to the second duration set and at least one of the following: a carrier frequency range, a subcarrier spacing, or a quasi-co-located QCL relationship corresponding to the TCI state;

According to the second switching duration, the first duration set is determined.
The device according to any one of claims 24-28, wherein the communication unit is further configured to:

Before sending the first indication information, receive second indication information reported by the terminal device, where the second indication information is used to indicate the second duration set.
The device according to any one of claims 24-29, wherein the communication unit is further configured to:

After the first indication information is sent, third indication information is sent, where the third indication information is used to indicate the first switching duration in the first duration set.
A communication device, characterized in that it includes a processor and an interface, the interface is used for inputting and/or outputting information; the processor is used for running a program, so that the communication device realizes any one of claims 1 to 8 The method of claim 9, or, performing the method of any one of claims 9 to 15.
The communication device of claim 31, wherein the communication device is a chip or a chip system.
A computer-readable storage medium, characterized in that it is used to store a computer program that, when the computer program runs on a computer, causes the computer to execute the method according to any one of claims 1 to 8, or , performing the method as claimed in any one of claims 9 to 15.
A communication system, characterized by comprising the device described in any one of claims 16 to 23 and the device described in any one of claims 24 to 30.
A computer program product, characterized in that it comprises instructions that, when run on a computer, cause the computer to perform the method of any one of claims 1 to 8, or to perform any one of claims 9 to 15 method described in item.