CN116325616A

CN116325616A - Method and communication device for indicating TCI state switching by transmission configuration

Info

Publication number: CN116325616A
Application number: CN202080106666.9A
Authority: CN
Inventors: 赵泽涵; 李翔; 戴喜增; 李可
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2023-06-23
Also published as: WO2022141420A1

Abstract

The embodiment of the application provides a method for indicating TCI state switching by transmission configuration and a communication device, wherein in the method, terminal equipment receives first indication information for indicating a first time length set corresponding to the TCI state, wherein the first time length set comprises one or more switching time lengths, and the first time length set is obtained according to a second time length set; the second time duration set comprises one or more switching time durations, and the second time duration set is reported to the network device by the terminal device. And the terminal equipment completes the switching of the TCI state according to the first switching duration in the first duration set. Therefore, when the terminal equipment moves between different network equipment and needs to perform TCI state switching, the time delay of TCI state switching can be reduced.

Description

Method and communication device for indicating TCI state switching by transmission configuration

Technical Field

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

Background

In some communication systems, when communicating between a terminal device and a network device, the network device may indicate to the terminal device a transmission configuration indication (Transmission Configuration Indicator, TCI) status in order to correctly receive signals transmitted by the network device. By measuring the reference signal associated with the TCI state, the terminal device can obtain some of the necessary features required to properly receive the network device transmit signal.

When the terminal device moves between different network devices, the network devices 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 a problem of larger delay.

Therefore, it is desirable to provide a method for reducing the TCI state switching delay.

Disclosure of Invention

The application provides a method and a communication device for transmitting configuration indication TCI state switching, which can reduce the time delay of TCI state switching when terminal equipment moves between different network equipment and needs TCI state switching.

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

Specifically, the method comprises the following steps: the method comprises the steps that a terminal device receives first indication information, wherein the first indication information is used for indicating a first time length set corresponding to the TCI state, the first time length set comprises one or more switching time lengths, the first time length set is obtained according to a second time length set, the second time length set comprises one or more switching time lengths, and the second time length set is reported to a network device by the terminal device; and switching the TCI state according to a first switching time length in the first time length set.

Therefore, by the method, when the terminal equipment moves between different network equipment and needs to switch the TCI state, the terminal equipment switches the TCI state according to the first switching duration by receiving the first switching duration in the first time duration set indicated by the first indication information sent by the network equipment, so that the time delay of switching the TCI state can be reduced.

With reference to the first aspect, in some possible implementations, the first time length set includes one switching time length, where the one switching time length is the first switching time length. That is, only one switching duration is included in the first duration set, 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 time length set, without receiving an additional indication of the network device, so that signaling overhead can be saved.

With reference to the first aspect, in some possible implementations, the first set of time durations includes a plurality of switching time durations, and the first switching time duration is one of the first set of time durations. That is, the terminal device needs to determine one for switching the TCI state from among a plurality of switching durations.

It can be seen that different services of the terminal device (such as ultra-low-latency communication (URLLC) service or enhanced mobile broadband (enhanced Mobile Broadband, eMBB) service, etc.) corresponding to the terminal device receive multiple switching durations in the first time duration set, so that the TCI state switching duration can be flexibly determined.

With reference to the first aspect, in some possible implementations, the first set of time durations is obtained according to a second set of time durations, including: the first time length set is obtained according to a second switching time length in the second time length set, and the first switching time length in the first time length set is not smaller than the second switching time length.

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, so as to ensure that the first switching duration of the terminal device for receiving the indication of the network device is 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: carrier frequency range, subcarrier spacing, or quasi co-sited QCL relationship corresponding to the TCI state.

As can be seen, the terminal device may uniquely determine the second switching duration according to the carrier frequency range indicated by the network device, the subcarrier interval, or the quasi co-sited QCL relationship corresponding to the TCI state.

With reference to the first aspect, in some possible implementations, before the receiving the first indication information, the method further includes: and reporting second indication information to the network equipment, wherein the second indication information is used for indicating the second duration set.

It can be seen that different terminal devices can report second indication information to the network according to their own TCI state switching capability, and the second time duration sets are different correspondingly, so that the network devices can schedule.

With reference to the first aspect, in some possible implementations, the switching the TCI state according to a first switching duration in the first time length set includes: receiving third indication information, wherein the third indication information is used for indicating the first switching duration; determining a target switching duration according to the first switching duration and a first preset duration; and switching the TCI state according to the target switching duration.

It can be seen that different services (such as URLLC service or eMBB service) of the terminal device, corresponding to the terminal device receiving multiple switching durations in the first time duration set, the terminal device can flexibly determine the TCI state switching duration by receiving further indications of the network device.

With reference to the first aspect, in some possible implementations, the determining, according to the first switching duration and the first preset duration, a target switching duration includes: determining that the first switching duration is the target switching duration under the condition that the first switching duration is smaller than the first preset duration; and under the condition that the first switching time length is greater than or equal to the first preset time length, determining that the first preset time length is the target switching time length.

Therefore, when the terminal equipment moves between different network equipment and needs to perform TCI state switching, the time delay of TCI state switching is reduced on the basis of the first preset time length.

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

Specifically, the method comprises the following steps: the network equipment determines a first time length set according to a second time length set corresponding to the TCI state, wherein the first time length set comprises one or more switching time lengths, the second time length set comprises one or more switching time lengths, and the second time length set is reported to the network equipment by the terminal equipment; and sending first indication information, wherein the first indication information is used for indicating the first time length set, and a first switching time length in the first time length set is used for switching the TCI state.

Therefore, by the method, when the terminal equipment moves between different network equipment and needs to switch the TCI state, the network equipment indicates the first switching duration to the terminal equipment, and the terminal equipment switches the TCI state according to the first switching duration, so that the time delay of switching the TCI state can be reduced.

The network device indicates the first switching duration to the terminal device, so that the terminal device switches the TCI state according to the first switching duration, which is beneficial to reducing the time delay of TCI state switching.

With reference to the second aspect, in some possible implementations, the first time length set includes one switching time length, where the one switching time length is the first switching time length.

It can be seen that, when the terminal device is in some fixed service scenarios, the network device indicates a first switching duration in the first time duration set to the terminal device, and the network device does not need to send an additional indication to the terminal device, so that signaling overhead can be saved.

With reference to the second aspect, in some possible implementations, the first time length set includes a plurality of switching time lengths, and the first switching time length is one of the first time length set.

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

With reference to the second aspect, in some possible implementations, a first switching duration in the first time period set is not less than the second switching duration. By means of the method, the first switching duration indicated by the network equipment to the terminal equipment can be ensured to be within the capability range of the terminal equipment.

With reference to the second aspect, in some possible implementations, the determining the first time length set according to the second time length set corresponding to the TCI state includes: determining a second switching duration for determining the first set of time durations according to the second set of time durations and at least one of: a carrier frequency range, a subcarrier spacing, or a quasi co-sited QCL relationship corresponding to the TCI state; and determining the first time length set according to the second switching time length.

As can be seen, the network device may uniquely determine the second switching duration according to the carrier frequency range indicated by the network device, the subcarrier interval, or the quasi co-sited QCL relationship corresponding to the TCI state.

With reference to the second aspect, in some possible implementations, before the sending the first indication information, the method further includes: and receiving second indication information reported by the terminal equipment, wherein the second indication information is used for indicating the second duration set.

The network device receives the second indication information reported by the terminal device, and 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 implementations, after sending the first indication information, the method further includes: and sending third indication information, wherein the third indication information is used for indicating one switching duration in the first duration set.

It can be seen that different services (such as URLLC service or eMBB service) of the terminal device correspond to a plurality of switching durations in the first time duration set indicated by the network device to the terminal device, and the network device sends further indication to the terminal device, so that the TCI state switching duration can be flexibly determined.

In a third aspect, the present application also provides a communication device. The communication means may be a terminal or a network device or a component in a terminal or a network device. The communication device may comprise various modules or units for performing the method of the first aspect and any possible implementation of the first aspect; alternatively, the communication device may comprise individual modules or units for performing the method of the second aspect and any of the possible embodiments of the second aspect. The functions of the modules or units may be implemented by hardware, or may be implemented by hardware executing corresponding software.

In one possible design, the communication device may include a processing unit in a structure configured to support the communication device to perform the corresponding functions of the above-described method. The communication device may further include a communication unit configured to support communication between the communication device and other devices. The communication device may further comprise a memory unit for coupling with the processing unit and the communication unit, which holds the necessary program instructions and data of the communication device.

In an implementation manner, the communication apparatus performs the related operations of the terminal device in the first aspect, where the communication apparatus may include:

a communication unit for receiving the first indication information; the first indication information is used for indicating a first time length set corresponding to the TCI state, the first time length set comprises one or more switching time lengths, the first time length set is obtained according to a second time length set, the second time length set comprises one or more switching time lengths, and the second time length set is reported to the network equipment by the terminal equipment;

and the processing unit is used for switching the TCI state according to a first switching duration in the first duration set.

In addition, in this aspect, other optional embodiments of the communication device may be referred to in the relevant content of the first aspect, which is not described in detail herein.

In another embodiment, a communication apparatus performs the operations related to the network device in the second aspect, and the communication apparatus may include:

the processing unit is used for determining a first time length set according to a second time length set corresponding to the TCI state, wherein the first time length set comprises one or more switching time lengths, the second time length set comprises one or more switching time lengths, and the second time length set is reported to the network equipment by the terminal equipment;

the communication unit is used for sending first indication information, and the first indication information is used for indicating the first time length set.

In addition, in this aspect, other optional embodiments of the communication device may be referred to in the related content of the second aspect, which is not described in detail herein.

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 one implementation, the communication device 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-on-chip. The processing unit may also be embodied as a processing circuit or 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 system of chips.

the transceiver is used for receiving first indication information, the first indication information is used for indicating a first time length set corresponding to the TCI state, the first time length set comprises one or more switching time lengths, the first time length set is obtained according to a second time length set, the second time length set comprises one or more switching time lengths, and the second time length set is reported to the network equipment by the terminal equipment;

and the processor is used for switching the TCI state according to a 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 N antennas of the terminal equipment; and N is an integer greater than or equal to 3, and M is an integer greater than or equal to 2.

the processor is used for determining a first time length set according to a second time length set corresponding to the TCI state, wherein the first time length set comprises one or more switching time lengths, the second time length set comprises one or more switching time lengths, and the second time length set is reported to the network equipment by the terminal equipment;

and the transceiver is used for sending first indication information, wherein the first indication information is used for indicating the first time length set.

In an implementation, a processor may be used to perform, for example but not limited to, baseband related processing, and a transceiver may be used to perform, for example but not limited to, radio frequency transceiving. The above devices may be provided on separate chips, or may be provided at least partially or entirely on the same chip. For example, the processor may be further divided into an analog baseband processor and a digital baseband processor. Wherein the analog baseband processor may be integrated on the same chip as the transceiver and the digital baseband processor may be provided 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, the digital baseband processor may be integrated on the same chip as a variety of application processors (e.g., without limitation, graphics processors, multimedia processors, etc.). Such chips may be referred to as System on chips (System on chips). Whether the individual devices are independently disposed on different chips or integrally disposed on one or more chips is often dependent on the needs of the product design. The implementation form of the device is not limited in the embodiment of the application.

In a fourth aspect, the present application further provides a processor configured to perform the method of the first or second aspect. In performing the method according to the first or second aspect, the process of transmitting the information and receiving the information in the method may be understood as a process of outputting the information by a processor and a process of receiving the input information by the processor. When outputting the information, the processor outputs the information to the transceiver for transmission by the transceiver. This information, after being output by the processor, may also require additional processing before reaching the transceiver. Similarly, when the processor receives the input of the information, the transceiver receives the information and inputs it to the processor. Further, after the transceiver receives the information, the information may need to be further processed before being input to the processor.

With respect to operations such as transmitting, sending, and receiving, etc., that are referred to by a processor, unless otherwise specified, or if not contradicted by actual or inherent logic in the relevant description, the operations such as outputting and receiving, inputting, etc., by the processor are more generally understood as being operations such as transmitting, sending, and receiving, rather than directly by radio frequency circuitry and antennas.

In implementation, the processor may be a processor dedicated to performing the methods, or may be a processor that executes computer instructions in a memory to perform the methods, e.g., a general purpose processor. The Memory may be a non-transitory (non-transitory) Memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately provided on different chips, and the type of the Memory and the manner of providing the Memory and the processor are not limited in this embodiment of the present application.

In a fifth aspect, the present application provides a computer readable storage medium storing computer software instructions which, when executed by a communications device, implement the method of the first or second aspect.

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

A seventh aspect provides a chip system for use in a communication device, the chip system comprising at least one processor, wherein program instructions, when executed in said at least one processor, cause the method of any one of the first or second aspects and optional implementations of the first or second aspect to be implemented on any one of the following devices: terminal equipment and network equipment.

In an eighth aspect, a communication system includes: the communication device. For example, the communication system includes: a terminal device performing the method described in the above first aspect and optional implementation manners of the first aspect, and a network device performing the method described in the above second aspect and optional implementation manners of the second aspect.

Drawings

Fig. 1 shows a schematic diagram of a communication system suitable for use in the TCI state switching method and the communication device according to an embodiment of the present application;

FIG. 2 illustrates a schematic diagram of yet another communication system suitable for use in the TCI state switching method and communication device of embodiments of the present application;

fig. 3 is a schematic diagram of a TCI state switching method according to an embodiment of the present application;

fig. 4 is a flow chart of a TCI state switching method provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a chip according to an embodiment of the present application;

Detailed Description

in order to better understand the TCI state switching method provided in the embodiments of the present application, a description is first given of a communication system applicable to the embodiments of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), fifth generation (5th generation,5G) mobile telecommunications system, or New Radio (NR), etc. The 5G mobile communication system may include a non-independent Networking (NSA) and/or an independent networking (SA), among others.

The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system. The communication system may also be a public land mobile network (public land mobile network, PLMN), a device-to-device (D2D) network, a machine-to-machine (machine to machine, M2M) network, an internet of things (internet of things, ioT) network, or other network. The IoT network may include, for example, an internet of vehicles. The communication modes in the internet of vehicles system are collectively called V2X (X represents anything), for example, the V2X communication includes: vehicle-to-vehicle (vehicle to vehicle, V2V), vehicle-to-roadside infrastructure (vehicle to infrastructure, V2I), vehicle-to-pedestrian communication (vehicle to pedestrian, V2P), or vehicle-to-network (vehicle to network, V2N), etc.

The terminal device in the embodiment of the present application may also be referred to as: a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a terminal device, a wireless communication device, a user agent, a user equipment, or the like.

The terminal device may be a device providing voice/data connectivity to a user, e.g., a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals are: a mobile phone, tablet, laptop, palmtop, mobile internet device (mobile internet device, MID), wearable device, virtual Reality (VR) device, augmented reality (augmented reality, AR) device, wireless terminal in industrial control (industrial control), wireless terminal in unmanned (self driving), wireless terminal in teleoperation (remote medical surgery), wireless terminal in smart grid (smart grid), wireless terminal in transportation security (transportation safety), wireless terminal in smart city (smart city), wireless terminal in smart home (smart home), cellular phone, cordless phone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, public computing device or other processing device connected to wireless modem, vehicle-mounted device, wearable device, terminal device in 5G network or evolving land mobile terminal (public land mobile network), and the like, without limiting the examples of this.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiment of the application, the terminal device may also be a terminal device in an IoT system, where IoT is an important component of future information technology development, and the main technical feature is to connect the article with a network through a communication technology, so as to implement man-machine interconnection and an intelligent network for interconnecting the articles. In the embodiment of the application, the IoT technology can achieve mass connection, deep coverage and terminal power saving through, for example, narrowband (NB) technology.

In addition, in the embodiment of the application, the terminal device may further include sensors such as an intelligent printer, a train detector, and a gas station, and the main functions include collecting data (part of the terminal device), receiving control information and downlink data of the network device, and transmitting electromagnetic waves to the network device to transmit uplink data.

In addition, the network device in the embodiment of the present application may be a device for communicating with a terminal device, the network device may be an evolved NodeB (eNB or eNodeB) in an LTE system, or may be a wireless controller in a cloud wireless access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an access point, a vehicle device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, or the like, which is not limited in the embodiment of the present application.

The network device in the embodiments of the present application may be a device in a wireless network, such as a radio access network (radio access network, RAN) node that accesses a terminal to the wireless network. Currently, some examples of RAN nodes are: a next generation base station gcb, a transmission and reception point (transmission reception point, TRP), an evolved Node B (eNB), a home base station, a baseband unit (BBU), an Access Point (AP) in a Wi-Fi system, or the like.

In one network architecture, the network devices may include Centralized Unit (CU) nodes, or Distributed Unit (DU) nodes, or RAN devices including CU nodes and DU nodes, or RAN devices including control plane CU nodes (CU-CP nodes) and user plane CU nodes (CU-UP nodes) and DU nodes.

In the embodiment of the application, the terminal device or the network device includes a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer includes hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (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 comprises applications such as a browser, an address book, word processing software, instant messaging software and the like. Further, the embodiment of the present application is not particularly limited to the specific configuration of the execution body of the method provided in the embodiment of the present application, as long as communication can be performed by the method provided in the embodiment of the present application by running a program in which the code of the method provided in the embodiment of the present application is recorded. For example, the execution body of the method provided in the embodiment of the present application may be a terminal device or a network device, or may be a functional module in the terminal device or the network device that can call a program and execute the program.

Furthermore, 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 herein encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include, but are not limited to, magnetic storage devices (e.g., hard disk, floppy disk, or magnetic strips, etc.), optical disks (e.g., compact disk, CD, digital versatile disk, digital versatile disc, DVD, etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory, EPROM), cards, sticks, 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" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

To facilitate an understanding of the embodiments of the present application, a communication system suitable for use in the embodiments of the present application will be described in detail with reference to fig. 1 and 2.

Fig. 1 is a schematic diagram of a wireless communication system 100 suitable for use in embodiments 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 further include at least one terminal device, such as the terminal device 121 shown in fig. 1, and the terminal device 123. The network device and the terminal device may each be configured with multiple antennas, and the network device and the terminal device may communicate using multiple antenna technology.

When the network device and the terminal device communicate, the network device can manage one or more cells, and an integral number of terminal devices can be arranged in one cell. Alternatively, the network device 111 and the terminal device 121 constitute a single-cell communication system to the terminal device 123, and the single cell may be denoted as cell #1. Network device 111 may be a network device in cell #1, or network device 111 may serve a terminal device (e.g., terminal device 121) in cell #1.

A cell is understood to be an area within the coverage of a radio signal of a network device.

Fig. 2 is another schematic diagram of a wireless communication system 200 suitable for use in embodiments of the present application. As shown in fig. 2, the wireless communication system 200 may include at least one terminal device 203, a plurality of network devices, such as network device 201 and network device 202. The wireless communication system can be a scene under a high-speed railway, network equipment is deployed on two sides of the railway, and at the moment, terminal equipment needs to frequently switch TCI states.

It should be understood that fig. 1 and 2 described above are merely exemplary illustrations, and the present application is not limited thereto. For example, the embodiments of the present application may be applied to any communication system, as long as at least two devices exist in the communication system.

To facilitate an understanding of the embodiments of the present application, a brief description of several terms referred to in this application will first be provided.

1. Transmission configuration indication (transmission configuration indicator, TCI) status: the TCI state is used to indicate a quasi co-location (QCL) relationship of a channel macro-scale parameter and one or two downlink reference signals in a data transmission process. Therefore, the terminal can acquire the indication information of the channel large-scale parameter relation of the received signal based on the TCI state, and further demodulate the data carried by the signal based on channel estimation. Each TCI state may include an index (servicellindex) of a serving cell, a bandwidth part (BWP) Identification (ID), and a reference signal resource identification (reference signal resource identification).

2. Quasi co-located (QCL): quasi co-sited QCL relationships are used to denote the presence of one or more identical or similar communication characteristics between multiple resources. For example, if two antenna ports have a quasi-co-located QCL relationship, the channel large scale characteristics of one port transmitting one signal can be inferred from the channel large scale characteristics of the other port transmitting one signal. The antenna ports having a quasi-co-located QCL relationship may have the same parameters in the corresponding signals, or the parameters of one antenna port may be used to determine the parameters of another antenna port having a quasi-co-located QCL relationship with that antenna port, or the two antenna ports may have the same parameters, or the difference in parameters between the two antenna ports may be less than a threshold. Wherein the parameters may include one or more of the following channel macro scale parameters: delay spread (delay spread), doppler spread (Doppler spread), doppler shift (Doppler shift), average delay (average delay), average gain, spatial reception parameters (spatial Rx parameters). The spatial reception parameters may include one or more of an emission Angle (AOA), a main emission Angle (domino AOA), an Average Angle of arrival (Average AOA), an Angle of arrival (Angle of departure, AOD), a channel correlation matrix, a power Angle spread spectrum of an Angle of arrival, an Average firing Angle (Average AOD), a power Angle spread spectrum of an Angle of departure, a transmit channel correlation, a receive channel correlation, a transmit beam forming, a receive beam forming, a spatial channel correlation, a spatial filter, or a spatial filtering parameter, or a spatial reception parameter, among others.

3. Duration of time: for example, but not limited to, a symbol, a frame, a subframe, a field, a system frame, a slot, a mini-slot, a radio frame, or a transmission time interval (Transmission time interval, TTI), etc., embodiments of the present application are not limited. In addition, the duration may have other names, such as time, period, time delay, etc.

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

Illustratively, as shown in fig. 3, the network device configures a plurality of TCI states for the terminal device, only TCI #0 is active and TCI #1 is known but inactive before sending the medium access control element (Media access control element, MAC-CE) command. The network sends a MAC-CE TCI state switch command at some point (n), activating TCI #1. The terminal device may continue to transceive data based on the original TCI state (TCI # 0) for 3ms after receiving the command and sending the hybrid automatic repeat request (hybrid automatic repeat request, HARQ) feedback. After a period of time, the terminal equipment can be in n+T _HARQ +3ms+T _first-SSB +T _SSB-proc The moment starts to transceive data based on the new TCI state (TCI # 1).

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

3ms is the MAC-CE processing time;

T _first-SSB set up for the terminalAfter completion of MAC-CE decoding, the above T _HARQ After +3ms, it is necessary to continue waiting until the first SSB arrives;

T _SSB-proc time for SSB post-processing to be received.

In the embodiment of the present application, if a first switching duration corresponding to the TCI state is less than a first preset duration, the terminal device switches the TCI state according to the first switching duration; if the first switching time length corresponding to the TCI state is longer than the first preset time length, the terminal equipment switches the TCI state according to the first preset time length. Referring to fig. 3, the first preset duration may be T _first-SSB+ T _SSB-proc 。

Further, in order to facilitate understanding of the embodiments of the present application, the following description is made.

First, the first, second and various numerical numbers in the embodiments shown below are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application. For example, different switching durations, different sets of durations, etc.

Second, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, and c may 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 the embodiments 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 (configuration information described below) is called to-be-indicated information, and in a specific implementation process, there are various ways to indicate to-be-indicated information, for example, but not limited to, the to-be-indicated information may be directly indicated, such as the to-be-indicated information itself or an index of the to-be-indicated information, etc. The information to be indicated can also be indicated indirectly by indicating other information, wherein the other information and the information to be indicated have an association relation. 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 the specific information may also be achieved by means of a pre-agreed (e.g., protocol-specified) arrangement sequence of the respective information, thereby reducing the indication overhead to some extent.

Fourth, in the embodiments shown below, a part of the scenario is described by taking a scenario of an NR network in a wireless communication network as an example, and it should be noted that the solutions in the embodiments disclosed in the present application may also be applied to other wireless communication networks, and the corresponding names may also be replaced by names of corresponding functions in other wireless communication networks.

Fifth, embodiments disclosed herein will present various aspects, embodiments, or features of the present application around a system comprising a plurality of devices, components, modules, etc. 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. Furthermore, combinations of these schemes may also be used.

Sixth, in the embodiments disclosed herein, "of", "corresponding" and "corrushing" may be sometimes used in combination, and it should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.

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

Currently, in order to correctly receive a signal sent by a network device when a terminal device communicates with the network device, the network device may indicate a TCI status to the terminal. By measuring the reference signal associated with the TCI state, the terminal device can obtain some of the necessary features required to properly receive the network device transmit signal. When the terminal device moves between different network devices, the network devices 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 a problem of larger delay. Therefore, it is desirable to provide a method for reducing the TCI state switching delay.

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

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

terminal devices

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

Referring to fig. 4, fig. 4 is a flow chart illustrating a method 400 for TCI state switching provided by an embodiment of the present application from a device interaction perspective. As shown in fig. 4, the method 400 shown in fig. 4 may include steps 410 through 450. Wherein steps 410 and 450 are optional steps. The steps in method 400 are described in detail below with reference to the figures.

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 for indicating a second duration set corresponding to the TCI state.

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

It should be understood that RRC messages, MAC-CEs and DCIs are only examples for ease of understanding and should not constitute any limitation to this application. The present application does not exclude the possibility that the second indication information is other signaling, nor that other names are defined for the signaling. In addition, the second indication information may be carried in one or more of physical layer signaling and higher layer signaling. The present application is not limited in this regard.

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

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

It is understood that step 410 is an optional step. In a possible implementation manner, the terminal reports the second indication information every time the terminal accesses the network device. In another possible implementation manner, when the network device needs to acquire the TCI state switching time, the terminal device may actively report the second indication information, or may send a request message to the terminal device through the network device, where the terminal device reports the second indication information after receiving the request message.

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

Optionally, the network device determines the first time length set according to the second time length set corresponding to the TCI state, including: determining a second switching duration for determining the first set of durations according to the second set of durations and at least one of: quasi co-location QCL relations corresponding to carrier frequency ranges, subcarrier spacing or TCI states; and determining a first time length set according to the second switching time length.

That is, the second switching duration is obtained according to at least one of a carrier frequency range, a subcarrier spacing, or a quasi co-sited QCL relationship corresponding to the TCI state. The terminal equipment reports second indication information to the network equipment, and indicates the index of the second time length set through the second indication information, and the network equipment determines the second switching time length according to the self requirement.

It can be understood that in the current NR protocol, the carrier Frequency range (Frequency range) is divided into two different types, namely FR1 and FR2, where FR1 corresponds to a Frequency range of 410MHz to 7125MHz and FR2 corresponds to a Frequency range of 24250MHz to 52600MHz. The embodiments of the present application are only illustrated by FR1 and FR2 in the current NR standard, and in 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 will be appreciated that the subcarrier spacing is determined for the network device or is agreed upon in advance by a predefined means.

In one possible embodiment, the second switching duration is obtained from a carrier frequency range. As shown in table 1, the indexes of the second duration sets are capability1, capability2, and capability3. The second duration set corresponding to the capability1 is {1,2}, the second duration set corresponding to the capability2 is {2,4}, and the second duration set corresponding to the capability3 is {3,8}.

TABLE 1

Units: slot	capability1	capability2	capability3
FR1	1	2	3
FR2	2	4	8

Optionally, if the network device determines that the used carrier frequency range is FR1 according to the self requirement under the condition that the second duration set corresponding to capability1 is {1,2}, the second switching duration is 1 slot; if the network device determines that the used carrier frequency range is FR2 according to the self requirement, the second switching duration is 2 slots.

Optionally, if the network device determines that the used carrier frequency range is FR1 according to the self requirement under the condition that the second duration set corresponding to capability2 is {2,4}, the second switching duration is 2 slots; if the network device determines that the used carrier frequency range is FR2 according to the self requirement, the second switching duration is 4 slots.

Optionally, if the network device determines that the used carrier frequency range is FR1 according to the self requirement under the condition that the second duration set corresponding to capability3 is {3,8}, the second switching duration is 3 slots; if the network device determines that the used carrier frequency range is FR2 according to the self requirement, the second switching duration is 8 slots.

It can be appreciated that the second switching durations included in the second duration set may have different values in different scenarios, and table 1 is merely an exemplary illustration for facilitating understanding of the embodiments of the present application, which are not limited in this application.

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

TABLE 2

Units: slot	capability1	capability2	capability3
QCL type A	1	2	3
QCL type A+D	2	4	8

Optionally, if the network device determines that the quasi co-located QCL relationship corresponding to the TCI state is QCL type a according to its own requirement under the condition that the second duration set corresponding to capability1 is {1,2}, the second switching duration is 1 slot; if the network device determines that the quasi co-located QCL relationship corresponding to the TCI state is QCL type a+d according to the self requirement, the second switching duration is 2 slots.

Optionally, if the network device determines that the quasi co-located QCL relationship corresponding to the TCI state is QCL type a according to its own requirement under the condition that the second duration set corresponding to capability2 is {2,4}, the second switching duration is 2 slots; if the network device determines that the quasi co-located QCL relationship corresponding to the TCI state is QCL type a+d according to the self requirement, the second switching duration is 4 slots.

Optionally, if the network device determines that the quasi co-located QCL relationship corresponding to the TCI state is QCL type a according to its own requirement under the condition that the second duration set corresponding to capability3 is {3,8}, the second switching duration is 3 slots; if the network device determines that the quasi co-located QCL relationship corresponding to the TCI state is QCL type a+d according to the self requirement, the second switching duration is 8 slots.

It will be appreciated that QCL type a, QCL type a+d in table 2 are merely examples, and QCL type a may also be replaced with QCL type B, QCL type C, QCL type a+b, QCL type a+c, QCL type b+c, QCL type a+d may also be replaced with QCL type D, QCL type b+d, QCL type c+d. Other quasi-co-sited QCL relationships are also possible, such as QCL type E, QCL type E may be combined with any one or more of the above-mentioned quasi-co-sited QCL relationships to implement the solution, which is not limited in the embodiments of the present application.

In another possible embodiment, the second switching duration is obtained from a subcarrier spacing. As shown in table 3, the subcarrier spacing includes: 15kHz, 30kHz, 60kHz and 120kHz, and the indexes of the second duration set are capability1, capability2 and capability3. 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 Table 3

Optionally, if the SCS determined by the network device according to the self requirement is 15kHz, the second switching duration is 1 slot under the condition that the second duration set corresponding to capability1 is {1,2,4,8 }; if the SCS determined by the network equipment according to the self requirement is 30kHz, the second switching time length is 2 slots, and if the SCS determined by the network equipment according to the self requirement is 60kHz, the second switching time length is 4 slots; if the SCS determined by the network equipment according to the self requirement is 120kHz, 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 are the same as the second duration set {1,2,4,8} corresponding to capability1, and will not be described herein.

It is understood that the subcarrier spacings 15kHz, 30kHz, 60kHz and 120kHz are merely examples, and 240kHz, 480kHz, and other possible forms are also possible, and the embodiments of the present application are not limited thereto.

In another possible embodiment, the second switching duration is obtained from a carrier frequency range and a subcarrier spacing. As shown in table 4, the subcarrier spacing includes: 15kHz, 30kHz, 60kHz and 120kHz, and the indexes of the second duration set are capability1, capability2 and capability3. 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 Table 4

Optionally, if the carrier frequency range used by the network device is determined to be FR1 according to the requirement of the network device and the SCS determined in FR1 is 15kHz under the condition that the second duration set corresponding to capability1 is {1,1,2,9,16}, the second switching duration is 1 slot; the SCS determined in FR1 is 30kHz, and the second switching duration is 1 slot; the SCS determined in FR1 is 60kHz, and the second switching duration is 2 slots; if the carrier frequency range used by the network equipment is determined to be FR2 according to the self requirement, and SCS determined in the FR2 is 60kHz, the second switching time length is 9 slots; the SCS determined in FR2 is 120kHz, the second switching duration is 16 slots.

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 are the same as the second duration set {1,1,2,9,16} corresponding to capability1, and will not be described herein.

In another possible implementation manner, the second switching duration is obtained according to the quasi co-sited QCL relationship and the subcarrier spacing corresponding to the TCI state. As shown in table 5, the subcarrier spacing includes: 15kHz, 30kHz, 60kHz and 120kHz, and the indexes of the second duration set are capability1, capability2 and capability3. 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, if the quasi co-located QCL relationship determined by the network device according to its own requirement is QCL type a and SCS determined in QCL type a is 15kHz under the condition that the second duration set corresponding to capability1 is {1,1,2,9,16}, the second switching duration is 1 slot; the SCS determined in the QCL type A is 30kHz, and the second switching duration is 1 slot; the SCS determined in the QCL type A is 60kHz, and the second switching duration is 2 slots; if the quasi-co-location QCL relation determined by the network equipment according to the self requirement is QCL type A+D, and SCS determined in the QCL type A+D is 60kHz, the second switching duration is 9 slots; the SCS determined in QCL type a+d is 120kHz, and the second switching duration is 16 slots.

It will be appreciated that QCL type a, QCL type a+d in table 5 are merely examples, and QCL type a may also be replaced with QCL type B, QCL type C, QCL type a+b, QCL type a+c, QCL type b+c, QCL type a+d may also be replaced with QCL type D, QCL type b+d, QCL type c+d. In a subsequent standard variation, there may be other quasi-co-sited QCL relationships, for example, QCL type E may be combined with any one or more of the above-mentioned quasi-co-sited QCL relationships to implement the technical solution, which is not limited in the embodiment of the present application.

In 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 for indicating a first time length set corresponding to the TCI state. The first time length set is obtained according to the second time length set, and one or more switching time lengths are included in the first time length set.

Alternatively, the first indication information may be an existing signaling or an added signaling, and the description of the second indication information in step 410 may be referred to, which is not described herein.

Optionally, the first time duration set is obtained according to the second time duration set, including: the first time length set is obtained according to the second switching time length in the second time length set, and the first switching time length in the first time length set is not smaller than the second switching time length. The second switching duration is obtained according to at least one of the carrier frequency range, the subcarrier spacing, or the quasi co-sited QCL relationship corresponding to the TCI state, which is described in step 420 and will not be repeated here.

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

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

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

Optionally, determining the target switching duration according to the first switching duration and the first preset duration includes: under the condition that the first switching time length is smaller than a first preset time length, determining the first switching time length as a target switching time length; and under the condition that the first switching time length is greater than or equal to the first preset time length, determining the first preset time length as the target switching time length. And switching the TCI state according to the target switching time length.

The method provided in the embodiment of the present application is described in detail above with reference to fig. 4. The following describes in detail the communication device provided in the embodiment of the present application with reference to fig. 5 to 7.

Referring to fig. 5, fig. 5 is a schematic block diagram of a communication device 500 according to an embodiment of the present application. The communication apparatus 500 corresponds to the terminal device or the network device in the uplink transmission method. Alternatively, the communication device 500 may include, but is not limited to: a communication unit 501, a processing unit 502.

In one possible design, the communication device 500 may perform the operations related to the terminal device, and the communication device may include:

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

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

Other optional implementations of the communication device may be found in the method 400 of the above-described method embodiment, and will not be described in detail herein.

In another possible design, the communication apparatus 500 may perform the related operations of the network device, and the communication apparatus may include:

a processing unit 502, configured to determine a first time duration set according to a second time duration set corresponding to the TCI state; the first time length set comprises one or more switching time lengths, the second time length set comprises one or more switching time lengths, and the second time length set is reported to the network equipment by the terminal equipment;

A communication unit 501, configured to send first indication information, where the first indication information is used to indicate the first time length set.

Other optional implementations of the communication device may be found in the method 400 described in the method embodiments above, and will not be described in detail herein.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device 600 may be a network device, a terminal device, a chip system, a processor or the like for supporting the network device to implement the method, or a chip, a chip system, a processor or the like for supporting the terminal device to implement the method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The communication device 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, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute software programs, and process data of the software programs.

Optionally, the communication device 600 may include one or more memories 602, on which instructions 604 may be stored, which may be executed on the processor 601, to cause the communication device 600 to perform the methods described in the method embodiments above. Optionally, the memory 602 may also store data. The processor 601 and the memory 602 may be provided separately or may be integrated.

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

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

the processor 601 is configured to determine a first set of time durations according to a second set of time durations;

the transceiver 605 is configured to transmit first indication information, where the first indication information is used to indicate a first set of time durations corresponding to the TCI state.

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

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

the transceiver 605 is configured to report second indication information, where the second indication information is used to indicate a second set of durations corresponding to the TCI state.

Optionally, the communication device 600 may also perform the relevant operations in the above-described method embodiments, which are not described in detail herein.

In one possible design, a transceiver may be included in processor 601 to implement the receive and transmit functions. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In yet another possible design, the processor 601 may optionally have instructions 603 stored thereon, where the instructions 603 run on the processor 601, which may cause the communication device 600 to perform the method described in the above method embodiments. Instructions 603 may be solidified in processor 601, in which case processor 601 may be implemented in hardware.

In yet another possible design, communication device 600 may include circuitry that may implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in embodiments of the present application may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronics, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal 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 apparatus described in the above embodiment may be a network device or a terminal device, but the scope of the communication apparatus described in the embodiment of the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 6. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, instructions;

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

(4) Modules that may be embedded within other devices;

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

(6) Others, and so on.

For the case where 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. Chip 700 shown in fig. 7 includes a processor 701 and an interface 702. Wherein the number of processors 701 may be one or more, and the number of interfaces 702 may be a plurality.

In one possible design, for the case where the chip is used to implement the functions of the network device in the embodiments of the present application:

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

the interface 702 is used to perform the relevant operations of S430 or S450 in the execution method 400.

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

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

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

Optionally, the chip further comprises a memory 703, the memory 703 being used for storing program instructions and data necessary for the terminal device or the network device.

Optionally, the chip may also perform the relevant operations in the method embodiments described above, which are not described in detail herein.

Those of skill would further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments herein may be implemented as electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present application.

The present application also provides a computer readable medium having stored thereon a computer program which, when executed by a computer, performs the functions of any of the method embodiments described above.

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

While the invention has been described with reference to the preferred embodiments, it will be apparent to those skilled in the art that various changes and substitutions can be made herein without departing from the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for indicating TCI state switching by transmission configuration, comprising:

receiving first indication information, wherein the first indication information is used for indicating a first time length set corresponding to the TCI state, the first time length set comprises one or more switching time lengths, the first time length set is obtained according to a second time length set, the second time length set comprises one or more switching time lengths, and the second time length set is reported to network equipment by terminal equipment;

and switching the TCI state according to a first switching time length in the first time length set.
The method of claim 1, wherein the first set of time durations comprises one switching time duration, the one switching time duration being the first switching time duration.
The method of claim 1, wherein the first set of time durations comprises a plurality of switching time durations, the first switching time duration being one of the first set of time durations.
A method according to any one of claims 1-3, wherein the first set of time durations is obtained from a second set of time durations, comprising:

the first time length set is obtained according to a second switching time length in the second time length set, and the first switching time length in the first time length set is not smaller than the second switching time length.
The method of claim 4, wherein the second switching duration is obtained from at least one of:

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

and reporting second indication information to the network equipment, wherein the second indication information is used for indicating the second duration set.
The method according to any one of claims 1-6, wherein the switching the TCI state according to a first switching duration in the first set of time durations comprises:

receiving third indication information, wherein the third indication information is used for indicating the first switching duration;

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

And switching the TCI state according to the target switching duration.
The method of claim 7, wherein the determining a target switching duration from the first switching duration and the first preset duration comprises:

determining that the first switching duration is the target switching duration under the condition that the first switching duration is smaller than the first preset duration;

and under the condition that the first switching time length is greater than or equal to the first preset time length, determining that the first preset time length is the target switching time length.
A method for indicating TCI state switching by transmission configuration, comprising:

determining a first time length set according to a second time length set corresponding to the TCI state, wherein the first time length set comprises one or more switching time lengths, the second time length set comprises one or more switching time lengths, and the second time length set is reported to network equipment by terminal equipment;

and sending first indication information, wherein the first indication information is used for indicating the first time length set, and a first switching time length in the first time length set is used for switching the TCI state.
The method of claim 9, wherein the first set of time durations comprises one switching time duration, the one switching time duration being the first switching time duration.
The method of claim 9, wherein the first set of time durations includes a plurality of switching time durations, the first switching time duration being one of the first set of time durations.
The method according to any of claims 9-11, wherein a first switching duration in the first set of time durations is not less than the second switching duration.
The method according to any one of claims 9-12, wherein determining the first set of time durations from the second set of time durations corresponding to the TCI state comprises:

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

and determining the first time length set according to the second switching time length.
The method according to any one of claims 9-13, wherein prior to the sending the first indication information, the method further comprises:

and receiving second indication information reported by the terminal equipment, wherein the second indication information is used for indicating 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:

And sending third indication information, wherein the third indication information is used for indicating the first switching duration in the first duration set.
An apparatus for indicating TCI state switching by transmission configuration, comprising:

the communication unit is used for receiving first indication information, wherein the first indication information is used for indicating a first time length set corresponding to the TCI state, the first time length set comprises one or more switching time lengths, the first time length set is obtained according to a second time length set, the second time length set comprises one or more switching time lengths, and the second time length set is reported to the network equipment by the terminal equipment;

and the processing unit is used for switching the TCI state according to a first switching duration in the first duration set.
The apparatus of claim 16, wherein the first set of time durations comprises one switching time duration, the one switching time duration being the first switching time duration.
The apparatus of claim 16, wherein the first set of time durations comprises a plurality of switch time durations, the first switch time duration being one of the first set of time durations.
The device according to any one of claims 16 to 18, wherein,

The first time length set is obtained according to a second switching time length in the second time length set, and the first switching time length in the first time length set is not smaller than the second switching time length.
The apparatus of claim 19, wherein the second handoff duration is obtained from at least one of:

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

and before receiving the first indication information, reporting second indication information to the network equipment, wherein the second indication information is used for indicating the second duration set.
The apparatus according to any one of claims 16-21, wherein the processing unit is configured to:

receiving third indication information, wherein the third indication information is used for indicating the first switching duration;

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

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

Determining that the first switching duration is the target switching duration under the condition that the first switching duration is smaller than the first preset duration;

and under the condition that the first switching time length is greater than or equal to the first preset time length, determining that the first preset time length is the target switching time length.
An apparatus for indicating TCI state switching by transmission configuration, comprising:

the processing unit is used for determining a first time length set according to a second time length set corresponding to the TCI state, wherein the first time length set comprises one or more switching time lengths, the second time length set comprises one or more switching time lengths, and the second time length set is reported to the network equipment by the terminal equipment;

the communication unit is used for sending first indication information, the first indication information is used for indicating the first time length set, and a first switching time length in the first time length set is used for switching the TCI state.
The apparatus of claim 24, wherein the first set of time durations comprises one switching time duration, the one switching time duration being the first switching time duration.
The apparatus of claim 24, wherein the first set of time durations comprises a plurality of switch time durations, the first switch time duration being one of the first set of time durations.
The apparatus of any of claims 24-26, wherein a first switching duration in the first set of time durations is not less than the second switching duration.
The apparatus according to any one of claims 24-27, wherein the processing unit is configured to:

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

and determining the first time length set according to the second switching time length.
The apparatus according to any one of claims 24-28, wherein the communication unit is further configured to:

and before the first indication information is sent, receiving second indication information reported by the terminal equipment, wherein the second indication information is used for indicating the second duration set.
The apparatus according to any one of claims 24-29, wherein the communication unit is further configured to:

and after the first indication information is sent, sending third indication information, wherein the third indication information is used for indicating the first switching duration in the first duration set.
A communication device comprising a processor and an interface for inputting and/or outputting information; the processor is configured to run a program to cause the communication device to implement the method of any one of claims 1 to 8 or to perform 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 system-on-chip.
A computer readable storage medium storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 8 or to perform the method of any one of claims 9 to 15.
A communication system comprising the apparatus of any one of claims 16 to 23, and the apparatus of any one of claims 24 to 30.
A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 8 or to perform the method of any one of claims 9 to 15.