CN116250328B

CN116250328B - State switching method, terminal device and network device

Info

Publication number: CN116250328B
Application number: CN202080105874.7A
Authority: CN
Inventors: 胡荣贻
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2025-03-25
Anticipated expiration: 2040-12-21
Also published as: CN116250328A8; WO2022133692A1; CN116250328A

Abstract

The present application relates to a state switching method, a terminal device and a network device. The state switching method includes: the terminal device receives configuration information for activating a transmission configuration indicating a TCI state switch, and the configuration information for activating the TCI state switch is also used to instruct the terminal device to perform a rapid adjustment based on a first reference signal; the terminal device performs the TCI state switch based on the configuration information for activating the TCI state switch. In an embodiment of the present application, by instructing the terminal device to perform a rapid adjustment based on the first reference signal through the configuration information for activating the TCI state switch, time waste can be reduced and throughput can be improved.

Description

State switching method, terminal equipment and network equipment

Technical Field

The present application relates to the field of communications, and in particular, to a method for switching states, a terminal device, and a network device.

Background

During the transmission configuration indication (Transmission Configuration Indicator, TCI) state switching, if the activation signaling process of TCI state switching is completed, a reference signal such as a synchronization channel/physical broadcast channel Block (Synchronization Signal/Physical Broadcast Channel Block, SS/PBCH Block, SSB) needs to be received to adjust the corresponding QCL information. If a User Equipment (UE) may miss a reference signal nearest to an activation signaling, the UE needs to wait for a long time slot to be unable to receive and transmit data, resulting in a great time waste (latency) and throughput loss.

Disclosure of Invention

The embodiment of the application provides a state switching method, terminal equipment and network equipment, which can reduce time waste.

The embodiment of the application provides a method for switching states, which comprises the following steps:

the method comprises the steps that a terminal device receives configuration information for activating transmission configuration indication TCI state switching, and the configuration information for activating TCI state switching is also used for indicating the terminal device to carry out quick adjustment based on a first reference signal;

The terminal device performs the TCI state switching based on the configuration information for activating the TCI state switching.

the network device sends configuration information for activating the transmission configuration to indicate the TCI state switching, and the configuration information for activating the TCI state switching is also used for indicating the terminal device to perform quick adjustment based on the first reference signal.

The embodiment of the application provides a terminal device, which comprises:

A receiving unit, configured to receive configuration information for activating transmission configuration to indicate TCI state switching, where the configuration information for activating TCI state switching is further configured to instruct the terminal device to perform fast adjustment based on a first reference signal;

And the processing unit is used for carrying out TCI state switching based on the configuration information for activating TCI state switching.

An embodiment of the present application provides a network device, including:

and the sending unit is used for sending configuration information for activating the transmission configuration to indicate the TCI state switching, and the configuration information for activating the TCI state switching is also used for indicating the terminal equipment to carry out quick adjustment based on the first reference signal.

The embodiment of the application provides terminal equipment, which comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory so as to enable the terminal equipment to execute the state switching method.

The embodiment of the application provides a network device which comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory so as to enable the network equipment to execute the state switching method.

The embodiment of the application provides a chip for realizing the method for switching the states.

The chip comprises a processor for calling and running a computer program from a memory, so that a device provided with the chip executes the method for switching the state.

An embodiment of the present application provides a computer-readable storage medium storing a computer program which, when executed by a device, causes the device to perform the above-described method of state switching.

An embodiment of the present application provides a computer program product including computer program instructions for causing a computer to perform the above-described method for switching states.

The embodiment of the application provides a computer program which, when run on a computer, causes the computer to execute the method for switching states.

According to the embodiment of the application, the terminal equipment is instructed to carry out rapid adjustment based on the first reference signal through the configuration information for activating TCI state switching, so that the time waste can be reduced, and the throughput can be improved.

Drawings

Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

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

Fig. 3 is a schematic diagram of a scenario of TCI state switching.

Fig. 4 is a schematic flow chart of a method of state switching according to an embodiment of the application.

Fig. 5 is a schematic flow chart diagram of a method of state switching in accordance with another embodiment of the application.

Fig. 6 is a schematic diagram of TCI status indication for UE-specific PDCCHMACCE.

Fig. 7 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of a terminal device according to another embodiment of the present application.

Fig. 9 is a schematic block diagram of a network device in accordance with an embodiment of the present application.

Fig. 10 is a schematic block diagram of a network device according to another embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a chip according to an embodiment of the application.

Fig. 13 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed Description

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

The technical scheme of the embodiment of the application can be applied to various communication systems, such as a global system for mobile communication (Global System of Mobile communication, GSM) system, a code division multiple access (Code Division Multiple Access, CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, a general packet Radio Service (GENERAL PACKET Radio Service, GPRS), a long term evolution (Long Term Evolution, LTE) system, a long term evolution (Advanced long term evolution, LTE-A) system, a New Radio (NR) system, an evolution system of the NR system, an LTE (LTE-based access to unlicensed spectrum, LTE-U) system on an unlicensed spectrum, an NR (NR-based access to unlicensed spectrum, NR-U) system on an unlicensed spectrum, a Non-terrestrial communication network (Non-TERRESTRIAL NETWORKS, NTN) system, a universal mobile communication system (Universal Mobile Telecommunication System, UMTS), a wireless local area network (Wireless Local Area Networks, WLAN), a wireless fidelity (WIRELESS FIDELITY, WIFI), a fifth Generation communication (5 th-Generation, 5G) system or other communication systems.

Generally, the number of connections supported by the conventional Communication system is limited and easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, device-to-Device (D2D) Communication, machine-to-machine (Machine to Machine, M2M) Communication, machine type Communication (MACHINE TYPE Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) Communication, or internet of vehicles (Vehicle to everything, V2X) Communication, etc., and the embodiments of the present application can also be applied to these Communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or an independent (Standalone, SA) networking scenario.

Alternatively, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may be considered as a shared spectrum, or the communication system in the embodiment of the present application may be applied to a licensed spectrum, where the licensed spectrum may be considered as an unshared spectrum.

Embodiments of the present application are described in connection with a network device and a terminal device, where the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User Equipment, or the like.

The terminal device may be a Station (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA) device, a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted, on water surface (such as a ship and the like), and in air (such as an airplane, a balloon, a satellite and the like).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial eontrol), a wireless terminal device in unmanned (SELF DRIVING), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (SMART GRID), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (SMART CITY), or a wireless terminal device in smart home (smart home), or the like.

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 comprises full functions, large size and complete or partial functions which can be realized independently of a smart phone, such as a smart watch, a smart glasses and the like, and is only focused on certain application functions, and needs to be matched with other devices such as the smart phone for use, such as various smart bracelets, smart jewelry and the like for physical sign monitoring.

In the embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in a WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device (gNB) in an NR network, a network device in a PLMN network for future evolution, or a network device in an NTN network, etc.

By way of example, and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth Orbit (medium earth Orbit, MEO) satellite, a geosynchronous Orbit (geostationary earth Orbit, GEO) satellite, a high elliptical Orbit (HIGH ELLIPTICAL Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In the embodiment of the application, the network device can provide service for a cell, the terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, the cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell (SMALL CELL), wherein the small cell can comprise a urban cell (Metro cell), a Micro cell (Micro cell), a Pico cell (Pico cell), a Femto cell (Femto cell) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission service.

Fig. 1 schematically illustrates a communication system 100. The communication system comprises one network device 110 and two terminal devices 120. Alternatively, the communication system 100 may include a plurality of network devices 110, and the coverage area of each network device 110 may include other numbers of terminal devices 120, which are not limited by the embodiments of the present application.

Optionally, the communication system 100 may further include other network entities such as Mobility management entity (Mobility MANAGEMENT ENTITY, MME), access and Mobility management function (ACCESS AND Mobility Management Function, AMF), which is not limited in this embodiment of the present application.

The network device may further include an access network device and a core network device. I.e. the wireless communication system further comprises a plurality of core networks for communicating with the access network devices. The access network device may be a long-term evolution (LTE) system, a next-generation (NR) system, or an evolved base station (evolutional node B, which may be simply an eNB or e-NodeB) macro base station, a micro base station (also referred to as a "small base station"), a pico base station, an Access Point (AP), a transmission point (transmission point, TP), a new generation base station (new generation Node B, gNodeB), or the like in an licensed assisted access long-term evolution (LAA-LTE) system.

It should be understood that a device having a communication function in a network/system according to an embodiment of the present application may be referred to as a communication device. Taking the communication system shown in fig. 1 as an example, the communication device may include a network device and a terminal device with a communication function, where the network device and the terminal device may be specific devices in the embodiments of the present application, which are not described herein, and the communication device may further include other devices in the communication system, for example, a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean that a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication having an association relationship. For example, the indication B may indicate that a directly indicates B, for example, B may be obtained by a, or may indicate that a indirectly indicates B, for example, a indicates C, B may be obtained by C, or may indicate that a and B have an association relationship.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, etc.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description describes related technologies of the embodiments of the present application, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as alternatives, which all belong to the protection scope of the embodiments of the present application.

1. TCI state (TCI-state) Quasi Co-Location (QCL) indication of downstream transmissions

In order to improve the reception performance when the terminal receives a signal, the terminal may improve the reception algorithm by using the characteristics of the transmission environment corresponding to the data transmission. The statistical properties of the channel may be used, for example, to optimize the design and parameters of the channel estimator. In an NR system, these characteristics corresponding to data transmission are represented by quasi co-located state (QCL-Info).

The characteristics of the transmission environment to which the data transmission corresponds may also vary if the downlink transmission is from a different transmission receiving node (TRP), panel (panel), or beam (beam). Therefore, in the NR system, when the network side transmits the downlink control channel or the data channel, the corresponding QCL state information may be indicated to the terminal through the TCI state.

For example, one TCI state may contain the following configuration:

a TCI state Identifier (ID) for identifying a TCI state;

QCL information 1;

QCL information 2 (this information is optional).

Wherein, one QCL information may further include the following information:

The QCL type configuration may be, for example, one of QCL type a, QCL typeB, QCL type c, or QCL typeD;

The QCL reference signal configuration includes a cell ID where the reference signal is located, a Bandwidth Part (BWP) ID, and an identification of the reference signal (for example, may be a channel state Information-reference signal (CHANNEL STATE Information-REFERENCE SIGNAL, CSI-RS) resource ID or SSB index).

Wherein, if both QCL information 1 and QCL information 2 are configured, the QCL type of at least one QCL information must be one of typeA, typeB, typeC, and the QCL type of the other QCL information (if configured) must be QCL type D.

Illustratively, the meaning of the different QCL type configurations is as follows:

'QCL-TypeA': { Doppler shift, doppler spread, AVERAGE DELAY, DELAY SPREAD } ({ Doppler shift, doppler spread, average delay, delay spread })

'QCL-TypeB': doppler shift, doppler spread } ({ Doppler frequency shift, doppler spread })

'QCL-TypeC': { Doppler shift, AVERAGE DELAY } ({ Doppler shift, average delay })

'QCL-TypeD': { Spatial Rx parameter } ({ space Rx parameter })

Illustratively, the relevant configurations of the TCI state and the QCL quasi-co-sited state are as follows:

in an NR system, the network side may indicate a corresponding TCI state for a downlink signal or a downlink channel. If the network side configures the QCL reference signal of the target downlink channel or the target downlink signal to be the reference SSB or the reference CSI-RS resource through the TCI state and the QCL type is configured to be typeA, typeB or typeC, the terminal may assume that the large-scale parameters of the target downlink signal or the target downlink channel (e.g., SSB or CSI-RS resource) are the same, and the large-scale parameters may be determined through QCL type configuration.

Similarly, if the network side configures the QCL reference signal of the target downlink channel or the target downlink signal to be the reference SSB or the reference CSI-RS resource through the TCI state and the QCL type is configured to be typeD, the terminal may receive the target downlink signal using the same receiving beam (i.e. Spatial Rx parameter) as that used for receiving the reference SSB or the reference CSI-RS resource. In general, the target downlink channel (or target downlink signal) and its reference SSB or reference CSI-RS resources are transmitted by the same TRP or the same panel or the same beam on the network side. If the transmission TRP or transmission panel or transmission beam of the two downlink signals or downlink channels are different, different TCI states are typically configured.

For a downlink Control channel, such as a physical downlink Control channel (Physical Downlink Control CHANNEL PDCCH), the TCI state of the corresponding Control resource set (Control ResourceSet, CORESET) may be indicated by means of radio resource Control (Radio Resource Control, RRC) signaling or RRC signaling + medium access Control (MEDIA ACCESS Control, MAC) signaling.

For downlink data channels, such as physical downlink shared channels (Physical Downlink SHARED CHANNEL, PDSCH), the set of available TCI states may be indicated by RRC signaling, and part of the TCI states in the set may be activated by MAC layer signaling, finally one or two TCI states may be indicated from the activated TCI states by a TCI state indication field in the downlink control information (Downlink Control Information, DCI) for PDSCH for the DCI schedule. The case of 2 TCI states is mainly for multiple TRP-like scenarios. For example, referring to fig. 2, the available set of TCI states is indicated by RRC signaling, which may include N candidate TCI states. K of the N candidate TCI states are activated by MAC signaling. The TCI state indication field in the DCI indicates 1 or 2 used TCI states from among K activated TCI states.

2. Description of TCI State known and unknown (unknown)

The TCI state is known if the following conditions are met (THE TCI STATE IS known if the following conditions are met:)

(1) During completion of a handoff from a last transmission of a reference signal (REFERENCE SIGNAL, RS) resource for an L1 (first layer) -RSRP (REFERENCE SIGNAL RECEIVING Power, reference Signal received Power) measurement report for a target TCI state to an active TCI state, wherein the Reference Signal (RS) resource for L1-RSRP measurement is an RS or quasi co-located in the target TCI state to the target TCI state RS(During the period from the last transmission of the RS resource used for the L1-RSRP measurement reporting for the target TCI state to the completion of active TCI state switch,where the RS resource for L1-RSRP measurement is the RS in target TCI state or QCLed to the target TCI state.).

(2) When the last RS resource transmission is used for beam reporting or measurement, the TCI state switching instruction is received within 1280 milliseconds (TCI state switch command is received within 1280 ms upon the 1ast transmission of the RS resource for beam reporting or measurement.).

(3) Before the TCI state switch instruction, the UE sends at least 1L 1-RSRP report of the target TCI state (The UE has sent at least 1 L1-RSRP report for the target TCI state before the TCI state switch command.).

(4) During the TCI state switch, the TCI state remains in a detectable state (THE TCI STATE REMAINS detectableduring THE TCI STATE SWITCHING period.).

(5) During TCI switching, SSBs associated with the TCI state are still detectable (The SSB associated WITHTHE TCI STATE REMAIN detectable during THE TCI SWITEHING period.).

(6) The SNR of the TCI state is not less than-3 dB (SNR of THE TCI STATE not less than-3 dB).

Otherwise, the TCI state is unknown (Otherwise, THE TCI STATE IS unknown).

3. Shi Ting requirements:

For example, TCI-state switching is supported in the following three active configurations. Corresponding to different requirements.

TCI state switching delay (delay) based on MAC-CE;

TCI state switching time delay based on RRC;

TCI state switching delay based on DCI.

Taking MAC-CE activation as an example:

(1) Activation/deactivation of PDSCHTCI states specific to the UE (Activation/Deactivation of UE-SPECIFIC PDSCH TCI STATE)

The network may activate and deactivate the configured TCI state for the PDSCH of the serving cell by sending an activation/deactivation of the TCI state for UE-specific PDSCH MAC CE. The TCI state configured for PDSCH is initially deactivated at configuration time and after handover (The network may activate and deactivate the configured TCI states for PDSCH of a Serving Cell by sending the TCI States Activation/Deactivation for UE-specific PDSCH MAC CE The configured TCI states for PDSCH are initially deactivated upon configuration and after a handover.).

The MAC entity should indicate to the lower layer information related to TCI state activation/deactivation for UE-specific PDSCH MAC CE if the MAC entity receives TCI state activation/deactivation for UE-specific PDSCH MAC CE at the serving cell.

(The MAC entity shall:

1>if the MAC entity receives an TCI States Actiyation/Deactivation for UE-specific PDSCH MAC CE on a Serving Cell：

2>indicate to lower 1ayers the information regarding the TCI States Activation/Deactivation for UE-specific PDSCH MAC CE.)

(2) Indication of TCI status for UE-specific PDCCH (Indication of TCI state for UE-SPECIFIC PDCCH)

The network may indicate the TCI status for PDCCH reception of CORESET of the serving cell by sending a TCI status indication for UE-specific PDCCH MAC CE (The network may indicate a TCI state for PDCCH reception for a CORESET of a Serving Cell by sending the TCI State Indication for UE-specific PDCCH MAC CE.).

The MAC entity should indicate to the lower layer information related to the TCI status indication for UE-specific PDSCH MAC CE if the MAC entity receives the TCI status indication for UE-specific PDCCHMAC CE at the serving cell.

(The MAC entity shall:

1>if the MAC entity receives a TCI State Indication for UE-specific PDCCH MAC CE on a Serving Cell:

2>indicate to lower layers the information regarding the TCI State Indication for UE-specific PDCCH MAC CE.)

Taking the TCI state switching delay based on MAC-CE as an example:

If the target TCI state is known, the UE should be able to adopt the target TCI state (TARGET TCI STATE) of the serving cell where the TCI state switch currently occurs until the PDSCH carrying the MAC-CE activation command is received in slot n (slot n), where The first slot (slot) after that receives the PDCCH. At the position of And, previously, the UE can receive the PDCCH with an old TCI state (the old TCI state).

Wherein,

T _HARQ is the time between Downlink (DL) data transmission and acknowledgement (T _HARQ IS THE TIMING between DL data transmission and acknowledgement AS SPECIFIED;);

T _first-SSB is the time for the first transmission of SSB after decoding the MAC CE command by the UE, which should be the time of QCL-TypeA or QCL-TypeC to Target (TCI) state (T_first-SSB is time to first SSB transmission after MAC CE command is decoded by the UE;The SSB shall be the QCL-TypeA or QCL-TypeC to target TCI state;);

T_SSB-proc=2ms;

If the target TCI state is not in the active TCI state list for PDSCH TOk =1, otherwise TOk＝0(TO_k＝1 if target TCI state is not in the active TCI state list for PDSCH,0 otherwise.).

If the target TCI state is unknown until PDSCH carrying MAC-CE activation command is received at slotn, the UE can employ the target TCI state of the serving cell where TCI state handoff is currently occurring, at The first slot after that receives the PDCCH. At the position ofAnd, previously, the UE can receive the PDCCH with an old TCI state (the old TCI state).

Wherein,

In FR1, or when the TCI state switch does not involve QCL-TypeD in FR2 ,T_L1-RSRP＝0(-T_L1-RSRP＝0 in FR1 or when the TCI state switching not involving QCL-TypeD in FR2.).

Otherwise, T _L1-RSRP is the time for refinement of the receive beam (Rxbeam) in FR2, in particular (Otherwise, T _L1-RSRP IS THE TIME for Rx beam REFINEMENT IN FR, DEFINED AS):

T _{Li-RSPR_Measurement_Period_SSB}(T_{Li-RSPR_Measurement_Period_SSB} for SSB) for SSB, assuming m=1 and T _Report＝0(with the assumption of M＝1,with T_Report =0):

for CSI-RS T _{L1-RSRP_Measurement_Period_CSI-RS}(T_{L1-RSRP_Measurement_Period_CSI-RS} for CSI-RS):

Is configured such that the higher layer parameter is repeatedly set to ON (configured WITH HIGHER LAYER PARAMETER repetition set to ON);

assume m=1 for periodic CSI-RS (with the assumpuon of M =1 for periodic CSI-RS);

For aperiodic CSI-RS, whether the number of resources in the set of resources is at least equal to the maximum number of received beams (for aperiodic CSI-RS if number of resources in resource SET AT LEAST equal to MaxNumberRxBeam);

T_Report＝0(with T_Report=0)。

When TCI state switching involves QCL-TypeD, TO _uk =1 for Ll-RSRP measurements based on CSI-RS, and L1-RSRP measurements based on SSB ,TO_uk＝0(TO_uk＝1 for CSI-RS based L1-RSRP measurement,and 0 for SSB based L1-RSRP measurement when TCI state switching involves QCL-TypeD);

TO _uk＝1(TO_uk =1 when TCI state switching involves other QCL types only when TCI state switching involves only other QCL types);

T _first-SSB is the time to first SSB transmission after L1-RSRP measurement when TCI state switching involves QCL-TypeD (T_first-SSB istime to first SSB transmission after L1-RSRP measurement when TCI state switching involves QCL-TypeD;);

Tfirst-SSB is the time to first SSB transmission after the UE decodes the MAC CE command for other QCL types (T_first-SSB is time to first SSB transmission after MAC CE command is decoded by the UE for other QCL types;);

In the target TCI state, the SSB should be QCL type a or QCL type C (The SSB shall be the QCL-TypeA or QCL-TypeC to TARGET TCI state.).

In the embodiment of the present application, the frequency range of 5GNR can be divided into different FR: FR1 and FR2. The frequency range FR1 may be a frequency band of 5GSub-6GHz (below 6 GHz), and the frequency range FR2 may be a 5G millimeter wave frequency band.

Referring to fig. 3, in one scenario, in a TCI handover request, there is a time slot from "slotn+t _HARQ + (3 ms)/NR slot length" to "slotn+t _HARQ+(3ms+TOk*(T_first-SSB+T_{SSB proc}))/NR slot length". Since the UE does not request to receive DL data during this time slot (UE is not require DL data during THIS TIME GAP), throughput performance may be affected if the first SSB arrives after 160ms. Further, during the time interval of T _first-SSB, it needs to be discussed whether UE behavior can be enhanced to receive DL data. In this example it is assumed that SSB burst period (burst periodicity) is equal to 160ms.

The Working Scope (Working Scope) to which this fig. 3 relates may include TCI handover enhancements [ RAN4, RAN1]:

Enhanced feasibility of UE reception and transmission is maintained during the period (or partial period) of the MAC CE-based TCI handover.

The operation of enhanced feasibility of UE reception and transmission is maintained during the period (or part of the period) of RRC-based TCI handover.

The current MAC CE or RRC mode activates TCI state switching (STATE SWITCHING), and the UE receives PDCCH with old TCI state (old TCI state) untilA period of time (denoted by gap 1) is still required after the UE receives and processes the activation signaling, namely: The first slot thereafter can begin to receive PDCCH or PDSCH with a new TCI state. Where slot n represents the slot in which PDSCH carrying MAC-CE or RRC activation command is received. T _HARQ denotes the time between Downlink (DL) data transmission and acknowledgement. The slot length is expressed and is related to the subcarrier spacing.

This time gap1 is generated mainly because of the need to receive a reference signal such as SSB to adjust the corresponding QCL information. For example, it is possible to adjust the power, beam direction or timing (timing) of the reference signal, which may be implemented by the UE. The length of the time gap1 depends on the period and time offset (time offset) of the reference signal such as SSB, and the like.

As shown in fig. 3, if just when the activation signaling process is completedOne reference signal SSB is missed and SSB period is 160ms, and then UE needs to wait 160ms gap1 to receive and transmit data, thus causing a great time waste (1 atency) and throughput loss.

The embodiment of the application can provide several methods for improving the efficiency of activating and using the TCI state, reducing the interruption gap (gap) caused by the TCI state switching, ensuring that the UE rapidly completes the TCI state switching and starts transmission, thereby reducing time waste and throughput loss.

Fig. 4 is a schematic flow chart of a method 200 of state switching according to an embodiment of the application. The method may alternatively be applied to the system shown in fig. 1, but is not limited thereto. The method includes at least some of the following.

S210, the terminal equipment receives configuration information for activating Transmission Configuration Indication (TCI) state switching, wherein the configuration information for activating the TCI state switching is also used for indicating the terminal equipment to perform fast adjustment (fast adjustment) based on a first reference signal.

S220, the terminal equipment performs TCI state switching based on the configuration information for activating TCI state switching.

For example, information for activating the first reference signal may be included in the configuration information for activating the TCI state switching.

Optionally, the fast adjusting based on the first reference signal comprises at least one of timing adjustment, beam direction adjustment, and reference signal power adjustment based on at least one first reference signal.

Illustratively, making the fast adjustment based on the first reference signal may include making the timing adjustment based on a first reference signal (one short timing adjustment, a short timing adjustment). In addition, the fast adjustment based on the first reference signal may further include adjusting QCL information such as a beam direction, a reference signal power, and the like based on one first reference signal. The configuration information may include an activation command of TCI state switching, after receiving and processing the activation command of TCI state switching, a time gap (gap) is passed, where data cannot be received and transmitted, and the time gap may be determined based on a period T _period of the first reference signal, a processing delay T _Pro, and the like, and the terminal device may complete adjustment of QCL information in the time gap. For example, adjusting the power, beam direction, or timing of the reference signal, etc.

For example, the fast adjustment based on the first reference signal may also include at least one of a timing adjustment, a beam direction adjustment, and a reference signal power adjustment based on the plurality of first reference signals. If the terminal device's capability is insufficient to support fast adjustment, it may be necessary to wait for multiple periods of the first reference signal to complete the adjustment. In this case, the elapsed time gap (gap) in which the terminal device cannot receive and transmit data after processing the activation signaling may be determined based on the plurality of periods T _period of the first reference signal, the processing delay T _Pro, and the like.

Optionally, the period of the first reference signal is smaller than the time threshold and/or belongs to a period comprised in the set of fast adjustment periods.

By way of example, a time threshold value, for example 25ms, may be preset, with which the period of the first reference signal may be configured as a short period.

For example, a fast adjustment period set may be preset, and the fast adjustment period set may include a plurality of periods. For example, a short period of 5ms,10ms,20ms, etc. The period of the first reference signal may also be configured as a short period with the fast adjustment period set.

Optionally, the period of the first reference signal is a specified SSB period, which is smaller than the time threshold and/or belongs to a period comprised in the set of fast adjustment periods.

The SSB period may be 5ms, 10ms, 20ms, 40ms, 80ms, or 160ms, for example. If the time threshold is 50ms, the specified SSB period may be 5ms, 10ms, 20ms, or 40ms. If the SSB periods included in the fast adjustment period set include 5ms, 10ms, and 20ms, the specified SSB period may be 5ms, 10ms, or20 ms.

Optionally, the configuration information for activating TCI state switching is at least one of:

activating the first configuration information of the TCI state switching through RRC;

Activating second configuration information of TCI state switching through the MAC CE;

And activating third configuration information of TCI state switching through DCI.

Optionally, if TCI state switching is activated by RRC, at least one of the following is included in the first configuration information:

a first reference signal;

A resource identification of the first reference signal;

A period of the first reference signal.

For example, the first configuration information may be carried by RRC signaling, and one reference signal for fast adjustment, i.e., the first reference signal, may be activated at the same time as the TCI state switching is activated by RRC signaling. The reference signal for fast adjustment may be a newly added reference signal such as a tracking reference signal (TRACKING REFERENCE SIGNAL, TRS) or a reference signal such as CSI _- RS or SSB defining a short period.

Optionally, the first reference signal is a Tracking Reference Signal (TRS), and the resource identifier of the first reference signal is a TRS resource identifier. Illustratively, the period of the TRS is generally short, and if the TRS is newly added while the activation command is sent, the period and processing delay of the TRS may be utilized to make a fast adjustment (e.g., acquisition timing, etc.) based on the first reference signal.

Optionally, the first reference signal is a CSI-RS or SSB, and the period corresponding to the resource identifier of the first reference signal is smaller than the time threshold and/or belongs to a period included in the fast adjustment period set. For example, the period of the CSI-RS or SSB may be defined by using a time threshold and/or a fast adjustment period set, so that the period of the CSI-RS or SSB is shorter, which satisfies the characteristic of the fast adjustment period. For example, the periods of the CSI-RS or SSB are 5ms, 10ms, and 20ms.

Optionally, if TCI state switching is activated by the MAC CE, the second configuration information is at least one of:

TCI status Activation (Activation)/Deactivation (Deactivation) for terminal device specific (specific) PDSCH MAC CE.

TCI status indication for terminal device specific PDCCH MAC CE.

For example, the second configuration information may be carried by MAC CE signaling, and one reference signal for fast adjustment, i.e. the first reference signal, is activated at the same time as the TCI state switch is activated by MAC CE signaling.

Alternatively, TCI state switching may be activated through RRC and MAC CE.

For example, the reference signal for the fast adjustment, i.e. the first reference signal, is marked in the RRC signaling activated TCI state and a fast TCI state switch based on the first reference signal is triggered by MAC CE signaling.

Optionally, the terminal device specific PDSCH MAC CE or the terminal device specific PDCCH MAC CE includes an extension bit, where the extension bit is used to indicate the first reference signal.

For example, an extended bit (bit) may be added after the TCI state identification, and a value of the extended bit may indicate the added TCI state identification, which may correspond to the first reference signal.

Optionally, at least one TCI status identifier in the terminal device specific PDSCH MAC CE or terminal device specific PDCCH MAC CE is used to indicate the first reference signal.

For example, the original TCI state identifier may also be modified such that the original TCI state identifier may correspond to the first reference signal.

Optionally, if the TCI state switch is activated by DCI, at least one of the following is included in the third configuration information:

a first reference signal;

A period of the first reference signal.

For example, the first configuration information may be carried by DCI, and one reference signal for fast adjustment, i.e. the first reference signal, is activated at the same time as the TCI state switch is activated by DCI.

Optionally, the terminal device performs TCI state switching based on the configuration information for activating TCI state switching, including:

determining a first delay of the TCI state switch based on the first reference signal;

determining a second time delay of the TCI state switching based on a second reference signal, wherein the second reference signal is CSI-RS or SSB;

and under the condition that the first time delay is smaller than the second time delay, performing the TCI state switching based on the period and the processing time delay of the first reference signal.

Illustratively, after receiving the configuration information for activating TCI state switching, the terminal device may determine a first delay, i.e. the time gap1, based on the first reference information for fast adjustment activated by the configuration information. If the original second reference signal for performing TCI state switching is CSI-RS or SSB, an original second delay, i.e. the time gap2, may be determined based on the period and the processing delay of the CSI-RS or SSB. If gap1 is smaller than gap2, it means that the time for the terminal device not to receive or transmit data can be shortened, and TCI state switching can be performed based on the period and processing delay of the first reference signal. If gap1 is not smaller than gap2, TCI state switching based on the period and processing delay of the second reference signal can be continued without changing the reference information.

Optionally, the period of the first reference signal is smaller than the period of the second reference signal.

Optionally, determining the first delay of the TCI state switch based on the first reference signal includes, in the event that the target TCI state is known, the terminal device determining the first delay based on the period and processing delay of the first reference signal.

For example, the TCI state before the switch may be referred to as an old (old) TCI state, and the TCI state after the switch may be referred to as a new TCI state or a target TCI state. If the target TCI state is known, the terminal device does not need to make a first layer reference signal received power (L1-RSRP) measurement and can directly determine the first delay based on the period and processing delay of the first reference signal. For example, the period of the first reference signal RS1 is T _first-RS1, the processing delay is T _RS1-proc, and the total first delay is (T _first-RS1+T_RS1-proc).

Optionally, determining the first timing of the TCI state switch based on the first reference signal includes the terminal device determining the first delay based on the L1-RSRP measurement time, the period of the first reference signal and the processing delay in case the target TCI state is unknown.

If the target TCI state is unknown, the terminal device needs to make a first layer reference signal received power (L1-RSRP) measurement, and therefore needs to directly determine the first delay based on the L1-RSRP measurement time, the period of the first reference signal, and the processing delay. For example, the period T _first-RS1 and the processing delay sum T _RS1-proc of the first reference signal RS1, the total first delay is T _L1-_RSRP+TO_uk*(T_first-RS1+T_RS1-proc). Where T _L1-RSRP is the L1-RSRP measurement time and TO _uk is a value determined based on the QCL type and the type of reference signal. For example, TO _uk =1 when the quasi-co-located type of TCI state switching is QCL-TypeD, and TO _uk =0 otherwise.

Optionally, the method further comprises:

after the first delay is further separated after the activation signaling is received and processed, the terminal device receives the PDCCH in the target TCI state.

For example, after the terminal device receives and processes the activation signaling or RRC activation signaling of the MAC CE, the terminal device may receive the PDCCH in the target TCI state after the rapid adjustment of the QCL information is completed with a first delay.

Optionally, the terminal device does not require receiving or transmitting data during the first time delay.

Optionally, the method further comprises:

the terminal device reports the capability of supporting the fast adjustment of the TCI state switching and/or the request for performing the fast adjustment of the TCI state switching.

Illustratively, some terminal devices are able to determine themselves to have the capability to support fast adjustment of TCI state switching. The terminal equipment can report the capability of supporting the quick adjustment of the TCI state switching and/or the request for carrying out the quick adjustment of the TCI state switching to the network equipment, and the network equipment sends configuration information for activating the TCI state switching to the terminal equipment after receiving the capability and/or the request.

Optionally, the method further comprises:

the terminal device receives a TCI state indicated by the network device for downlink transmission.

For example, the network device may indicate to the terminal device the TCI status of the downlink signal or the downlink channel, and then send to the terminal device configuration information for activating the TCI status switch. That is, the terminal device may first receive the TCI state indicated by the network device as the downlink signal or the downlink channel, and then receive the configuration information for activating the TCI state switching by the network device.

Fig. 5 is a schematic flow chart diagram of a method 300 of state switching in accordance with one embodiment of the application. The method may alternatively be applied to the system shown in fig. 1, but is not limited thereto. The method includes at least some of the following.

S310, the network equipment sends configuration information for activating transmission configuration to indicate TCI state switching, and the configuration information for activating TCI state switching is also used for indicating the terminal equipment to carry out quick adjustment based on the first reference signal.

Optionally, the fast adjusting based on the first reference signal includes at least one of timing adjustment, beam direction adjustment, and reference signal power adjustment based on at least one first reference signal.

Optionally, the first configuration information includes at least one of the following:

a first reference signal;

A resource identification of the first reference signal;

A period of the first reference signal.

Optionally, the first reference signal is a tracking reference signal TRS, and the resource identifier of the first reference signal is a TRS resource identifier.

Optionally, the first reference signal is a CSI-RS or SSB, and the period corresponding to the resource identifier of the first reference signal is smaller than the time threshold and/or belongs to a period included in the fast adjustment period set.

Optionally, the second configuration information is at least one of:

TCI state activation/deactivation for terminal device specific PDSCH MAC CE.

TCI status indication for terminal device specific PDCCH MAC CE.

Optionally, the terminal device-specific PDSCH MAC CE includes an extension bit, where the extension bit is used to indicate the first reference signal.

Optionally, at least one TCI status identifier in the terminal device specific PDSCH MAC CE is used to indicate the first reference signal.

Optionally, the third configuration information includes at least one of the following:

a first reference signal;

A period of the first reference signal.

Optionally, the period of the first reference signal is smaller than the period of the second reference signal, and the second reference signal is CSI-RS or SSB.

Optionally, the method further comprises:

The network device receives the capability of supporting the quick adjustment of the TCI state switching and/or the request of quick adjustment of the TCI state switching, which are reported by the terminal device.

Optionally, the method further comprises:

The network device sends a TCI status indicating for downlink transmission to the terminal device.

Specific examples of the method 300 performed by the network device in this embodiment may be referred to the description about the network side or the network device, such as the base station, in the method 200, and for brevity, will not be described herein.

In an exemplary scenario, the method for switching states according to the embodiment of the present application is a new method for supporting fast TCI state switching, and mainly includes the following contents:

the MAC-CE activation signaling design is enhanced, and the rapid configuration of the reference signal is supported;

the RRC activation signaling design is enhanced, and the rapid configuration of the reference signal is supported;

The design of the activation signaling of the mixed DCI is enhanced, and the rapid configuration of the reference signal is supported;

the design of a special TCI state list (list) suitable for enhanced capability UE.

By adopting the method for switching the state, the efficiency of activating and using the TCI state can be improved, the interruption gap (gap) caused by switching the TCI state is reduced, the UE is ensured to rapidly complete switching the TCI state and start transmission, and the throughput loss is reduced.

The following are several specific examples:

Example one MAC-CE activation signaling design enhancement, support for fast configuration of reference signals

S11, the network side may indicate a corresponding TCI status for the downlink signal or the downlink channel.

S12, when the network configures the TCI state switching (TCI-STATE SWITEHING) activated by the MAC-CE, the configuration of a new reference signal RS1 can be activated simultaneously for the UE to quickly adjust (one short timing adjustment). For example, the configuration of the new reference signal RS1 may instruct the UE to make a fast adjustment based on the RS 1. Wherein the MAC-CE activated TCI state switching may be configured in at least one of the following ways:

TCI state Activation/deactivation for UE-specific PDSCH MAC CE (TCI STATES Activation/Deactivation for UE-SPECIFIC PDSCH MAC CE;):

TCI status indication for UE specific PDCCH MAC CE (TCI State Indication for UE-SPECIFIC PDCCH MAC ce.).

For example, the configuration of activating a new reference signal RS1 is indicated by the TCI status identifier (TCI STATEID) field of the above configuration. Wherein the TCI state identification field may represent the TCI state identified by TCI-StateId, applicable to the control resource set identified by CORESET ID field. If CORESET ID field is set to 0, this field represents TCI-StateId for the first 64 TCI States of the tix-States-ToAddModList and tix-States-ToReleaseList configurations in PDSCH configurations in active BWP. If the field CORESET ID is set to other values higher than 0, this field represents a TCI status list (TCI-StateList) and a TCI status PDCCH add list (TCI-STATESPDCCH-ToAddList) and a TCI status PDCCH delete list (TCI-STATESPDCCH-ToReleaseList) configured by TCI-StateId in the control resource set identified by indication CORESET ID. The TCI state identification field is 7 bits in length (TCI State ID：This field indicates the TCI state identified by TCI-StateId applicable to the Control Resource Set identified by CORESET ID field.If the field of CORESET ID is set to 0,this field indicates a TCI-StateId for a TCI state of the first 64 TCI-states configured by tci-States-ToAddModList and tci-States-ToReleaseList in the PDSCH-Config in the active BWP.If the field of CORESET ID is set to the other value than 0,this field indicates a TCI-StateId configured by tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList in the controlResourceSet identified by the indicated CORESET ID.The length of the field is 7 bits.).

Illustratively, referring to fig. 6, in the TCI status indication for UE-specific PDCCH MAC CE, a serving cell identity (SERVING CELL ID), CORESET ID, TCI status identity (TCI STATE ID), etc. may be included. In particular, the relevant configuration in the enhanced UE-specific PDCCH MAC CE may be improved. For example, the number of the cells to be processed,

Extension bit (bit) bit is added after TCI STATE ID to indicate the configuration of RS1, or

The unexpanded bit (bit) directly specifies the special TCI STATE ID (predefined a section of binding is dedicated to TCI STATE ID LIST of RS 1).

In the embodiment of the present application, the period of the RS1 may be a short period (e.g., 5ms,10ms,20 ms)

S13, the UE receives and processes the activation signalingAfter a period of interval gap, the UE may receive the PDCCH with a new TCI-state after receiving and processing the first reference signal (TO _k*(T_first-SSB+T_SSB-proc).

S14, the UE needs to meet the specified delay requirement after completing the handover procedure in step S13, and the UE does not need to receive or transmit data in the gap.

S14-1 is known (known) for the target TCI state, if the current target TCI state is in the active TCI state list of PDSCH (ACTIVE TCI STATE ist for PDSCH), the TCI state switching latency requirement becomes shorter than usual. For example, the time of gap1, the period T _first-RS1 and the processing delay sum T _RS1-proc, respectively, of the new reference signal RSl are changed from the previous T _first-SSB and T _SSB-proc, respectively, and the total gap 1is also shortened, that is, (T _first-RS1+T_RS1-proc).

S14-2-unknown to the target TCI state (unkuown), if the current target TCI state is in ACTIVE TCI STATE LIST for PDSCH, the TCI-STATE SWITCH latency requirements become shorter than the existing protocol requirements. For example, the period T _first-RS1 and the processing delay T _RS1-proc of the new reference signal RS1 are changed from the previous T _first-SSB and T _SSB-proc, respectively, in comparison with the case shown in fig. 3, and the total gap1 is also shortened, i.e., T _L1-RSRP+TO_uk*(T_first-RS1+T_RS1-proc). Wherein T _L1-RSRP and TO _uk may be as follows.

When TCI state switching of QCL-TypeD is not involved in FR1 or FR2, T _L1-RSRP＝0(T_L1-RSRP = 0 in FR1 or when the TCI state Switching not involving QCL-TYPED IN FR.

Otherwise:

T _L1-RSRP is the time of receive beam refinement in FR2, specifically (T _L1-RSRP is the timefor Rxbeam REFINEMENT IN FR, DEFINED AS)

T _{L1-RSPR_Measurement_Period_SSB} for SSB (T _{L1-RSPR_Measurement_Period_SSB} for SSB), assuming m=1 and T _Report＝0(with the assumption of M＝1;with T_Report =0):

T _{L1-RSRP_Measurement_Period_CSI-RS} for CSI-RS (T _{L1-RSRP_Measurement_Period_CSI-RS} for CSI-RS), configured with the higher layer parameters repeatedly set ON (configured WITH HIGHER LAYER PARAMETER repetition set to ON), assuming that m=1 is used for periodic CSI-RS (with the assumption of M =1 for periodic CSI-RS). If the number of resources in the set of resources is at least equal to the maximum number of received beams, then for periodicity CSI-RS(for aperiodic CSI-RS if number of resources in resource set at least equal to MaxNumberRxBeam), and T _Report＝0(with T_Report = 0).

T _{L1-RSRP_Measurement_Period_RS1} for RS1 (T _{L1-RSRP_Measurement_Period_RS1} for RS 1), configured with the higher layer parameters repeatedly set ON (configured WITH HIGHER LAYER PARAMETER repetition set to ON), assuming that m=1 is used for periodic RS1 #

With the assumption of M = 1for periodic RS1). If the number of resources in the set of resources is at least equal to the maximum number Max Number Rx Beam of received beams, it is available for periodic RS1 (for aperiodic RS1 if number of resources in resource SET AT LEAST equal to MaxNumberRxBeam), and _Report＝0(with T_Report =0

Alternatively, a shorter T _L1-RSRP may be defined along with T _L1-RSRP of the CSI-RS, even for TRS.

When TCI state switching involves QCL-TypeD, TO _uk =0 for RS 1-based L1-RSRP measurements, otherwise TO_uk＝1(TO_uk＝0 for RS1 based L1-RSRP measurement when TCI state Switching involves QCL-TypeD, TO _uk =1.

T _first-RS1 may be the time to first RS1 transmission after L1-RSRP measurement when TCI state switching involves QCL-TypeD (T_first-RS1 is time to first RS1 transmission after L1-RSRP measurement when TCI state Switching involves QCL-TypeD;);

When T _first-RS1 can be other QCL type, the time after decoding the MAC CE command by the UE to the first transmission of RS1 (T_first-RS1 is time to first RS1 transmission after MAC CE command is decoded by the UE for other QCL types;);

T _RS1-proc is the time to process RS1 (T _RS1-proc time to process RS. 1.). Is typically constant and even shorter than 2 ms.

Illustratively, if SSB is employed as the reference signal, and the SSB period is 80ms. If the period of the reference signal RS1 is used is 10ms. Compared with the adoption of the SSB, the method has the advantages that the interruption of data transmission of the current service cell in TCI state switching can be obviously shortened, the switching efficiency is improved, and the throughput loss, particularly the loss of the PDCCH transmission rate, is reduced.

Example two activating RRC signaling design enhancements supporting fast configuration of reference signals

S21, the network side may indicate a corresponding TCI status for the downlink signal or the downlink channel.

S22, when the network configures RRC activated TCI state switching (TCI-STATE SWITCHING), simultaneously activating the configuration of a new reference signal RS1 for the UE to quickly adjust (one short timing adjustment).

Specifically, the configuration of enhanced TCI State (TCI-State) and quasi co-sited State (QCL-Info) is improved.

For example, REFERENCESIGNAL (reference signal) fields are added to indicate the configuration of RS1, such as TRS and TRS-ResourceID.

For another example, REFERENCESIGNAL a specified length of NZP-CSI-RS-ResourceId (non-zero power CSI-RS resource identification) is modified for CSI-RS configuration, specifically corresponding to short period RS1.

For example, the period of RS1 is a short period (e.g., 5ms,10ms,20 ms)

The following are examples of configurations to improve enhanced TCI State (TCI-State) and quasi co-sited State (QCL-Info):

the UE receives and processes the activation signaling (e.g., for an elapsed length of time ) After receiving and processing the first reference signal (e.g., the elapsed time length TO _k*(T_fiist-SSB+T_ssB-proc) after a gap interval, the UE may receive the PDCCH with the new TCI state.

The UE needs to meet the specified delay requirement to complete the handover procedure in step S23, and the UE does not need to receive or transmit data in the gap.

S24-1 is known (known) for the target TCI state, if the current target TCI state is in the active TCI state list of PDSCH (ACTIVE TCI STATE LIST for PDSCH), the TCI state switching latency requirement becomes shorter than usual. For example, the time of gap1 is changed from the previous period T _first-_RS1 and processing delay T _RS1-proc of the reference signal RS1 by T _first-SSB and T _SSB-proc, respectively, as compared with the case shown in fig. 3, and the total gap1 is also shortened, that is, (T _first-RS1+T_RS1-proc).

S24-2-unknown to the target TCI state (unknown), if the current target TCI state is in ACTIVE TCI STATE LIST for PDSCH, the TCI-STATE SWITCH latency requirements become shorter than the existing protocol requirements. For example, the time of gap1 is changed from the previous period T _first-RS1 and processing delay sum T _RS1-proc of the new reference signal RS1 by T _first-SSB and T _ssB-proc, respectively, and the total gap is also shortened, i.e., T _L1-RSRP+TO_uk*(T_first-RS1+T_RS1-proc, as compared with the case shown in fig. 3. Wherein T _L1-RSRP and TO _uk can be found in the relevant description of example one.

The method for switching the state of the embodiment can shorten the interruption of data transmission of the current service cell in TCI state switching, improve the switching efficiency and reduce the throughput loss, particularly the loss of the PDCCH transmission rate.

Example three, MAC-CE or RRC activated TCI state switch hybrid DCI activated RS, supporting fast configuration and fast adjustment of reference signals (one short timing adjustment), shortening gap1.

S31, the network side may indicate a corresponding TCI status for the downlink signal or the downlink channel.

S32, when the network configures the TCI-STATE SWITCHING activated by the MAC-CE or RRS, the network configuration triggers a DCI to activate the configuration of a new reference signal RS1 for the rapid adjustment of the UE (one shorttuming adjustment). Wherein the period of RS1 is generally short (e.g., 5ms,10ms,20 ms)

S33 may be referred to the relevant description of S13 and S23 in the above example.

S34 may be referred to the relevant description of S14 and S24 in the above example.

In this example, the reference signal for TCI state switching may be flexibly configured by using DCI, so that services with different latency requirements may be satisfied, in particular, existing interruption may be shortened, TCI state switching design may be enhanced, switching efficiency may be improved, and throughput loss, in particular, PDCCH transmission rate loss may be reduced.

Example IV TCI State switching for DCI activation Mixed DCI activation RS, support fast configuration and one shot ajustement of reference Signal, shorten gap1

S41, the network side can indicate the corresponding TCI state for the downlink signal or the downlink channel

S42, when the network configures the DCI activated TCI-STATE SWITCHING, the network configuration triggers a DCI to activate a new configuration of the reference signal RS1 for the UE to quickly adjust (one short timing adjustment). For example, the period of RS1 may be a short period (e.g., 5ms,10ms,20 ms)

S43 can be seen from the relevant description of S13 and S23 in the above example.

S44 may be referred to the relevant description of S14 and S24 in the above example.

In any of the above examples, the UE may also report to the network device whether it has the capability of fast TCI state switching or send a request for fast TCI state switching. After receiving the capability reported by the UE, the network device indicates a corresponding TCI state for the downlink signal or the downlink channel.

Example five active TCI State List update (ACTIVE TCI STATE ist update)

For a dedicated RS that can support fast TCI state switching, a subset is preconfigured or calibrated in the active TCI state list. Once the UE supports or reports the capability of fast TCI state switching, the network may configure the set of TCI state lists TCI STATE LISTL when TCI state switching is done for the UE.

Fig. 7 is a schematic block diagram of a terminal device 400 according to an embodiment of the application. The terminal device 400 may include:

A receiving unit 410, configured to receive configuration information for activating transmission configuration to indicate TCI state switching, where the configuration information for activating TCI state switching is further used to instruct the terminal device 400 to perform fast adjustment based on the first reference signal;

The processing unit 420 is configured to perform TCI state switching based on the configuration information for activating TCI state switching.

a first reference signal;

A resource identification of the first reference signal;

A period of the first reference signal.

Optionally, the first reference signal is a Tracking Reference Signal (TRS), and the resource identifier of the first reference signal is a TRS resource identifier.

Optionally, the second configuration information is at least one of:

TCI state activation/deactivation for terminal device specific PDSCH MAC CE.

TCI status indication for terminal device specific PDCCH MAC CE.

a first reference signal;

A period of the first reference signal.

Optionally, the processing unit 420 is further configured to:

Optionally, the processing unit 420 is configured to determine a first delay for the TCI state switch based on the first reference signal, including determining the first delay by the terminal device 400 based on a period and a processing delay of the first reference signal if a target TCI state is known.

Optionally, the processing unit 420 is configured to determine a first delay of the TCI state switching based on the first reference signal, including determining the first delay by the terminal device 400 based on the L1-RSRP measurement time, the period of the first reference signal, and the processing delay in case the target TCI state is unknown.

Optionally, the receiving unit 410 is further configured to receive the PDCCH in the target TCI state after receiving and processing the activation signaling and further after the first delay.

Optionally, the terminal device 400 does not require receiving or transmitting data during the first time delay.

As shown in fig. 8, the terminal device 400 further includes:

a reporting unit 430, configured to report the capability of supporting the fast adjustment of the TCI state switch and/or the request for performing the fast adjustment of the TCI state switch.

Optionally, the receiving unit 410 is further configured to receive a TCI state indicated by the network device for downlink transmission.

The terminal device 400 according to the embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method embodiment. The flow, function, implementation and beneficial effects corresponding to each module (sub-module, unit or assembly, etc.) in the terminal device 400 can be referred to the corresponding description in the above method embodiments, and will not be repeated here. It should be noted that, the functions described in the respective modules (sub-modules, units, or components, etc.) in the terminal device 400 of the application embodiment may be implemented by different modules (sub-modules, units, or components, etc.), or may be implemented by the same module (sub-module, unit, component, etc.).

Fig. 9 is a schematic block diagram of a network device 500 in accordance with an embodiment of the present application. The network device 500 may include:

A sending unit 510, configured to send configuration information for activating transmission configuration to indicate TCI state switching, where the configuration information for activating TCI state switching is further used to instruct the terminal device to perform fast adjustment based on the first reference signal.

a first reference signal;

A resource identification of the first reference signal;

A period of the first reference signal.

Optionally, the second configuration information is at least one of:

TCI state activation/deactivation for terminal device specific PDSCH MAC CE.

TCI status indication for terminal device specific PDCCH MAC CE.

a first reference signal;

A period of the first reference signal.

As shown in fig. 10, the network device 500 further includes:

And the receiving unit 520 is configured to receive the capability of supporting the fast adjustment of the TCI state switching and/or the request for performing the fast adjustment of the TCI state switching, which are reported by the terminal device.

Optionally, the sending unit 510 is further configured to send a TCI state indicated for downlink transmission to the terminal device.

The network device 500 of the embodiment of the present application can implement the corresponding functions of the network device in the foregoing method embodiment. The flow, function, implementation and beneficial effects corresponding to each module (sub-module, unit or component, etc.) in the network device 500 can be referred to the corresponding description in the above method embodiments, which are not repeated here. It should be noted that, the functions described in the respective modules (sub-modules, units, or components, etc.) in the network device 500 of the application embodiment may be implemented by different modules (sub-modules, units, or components, etc.), or may be implemented by the same module (sub-module, unit, component, etc.).

Fig. 11 is a schematic structural diagram of a communication apparatus 600 according to an embodiment of the present application. The communication device 600 comprises a processor 610, which processor 610 may call and run a computer program from a memory to cause the communication device 600 to implement the method in an embodiment of the application. For example, the processor 610 may be configured to perform the relevant functions of the processing unit 420 of the above-described embodiments.

Optionally, the communication device 600 may further comprise a memory 620. Wherein the processor 610 may invoke and run a computer program from the memory 620 to cause the communication device 600 to implement the method in embodiments of the present application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

Optionally, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices. For example, the transceiver 630 may be used to perform the relevant functions of the receiving unit 410 and reporting unit 430 in the above embodiments.

The transceiver 630 may include a transmitter and a receiver, among others. Transceiver 630 may further include antennas, the number of which may be one or more.

Optionally, the communication device 600 may be a network device according to the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the network device in each method according to the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 600 may be a terminal device according to the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the terminal device in each method according to the embodiment of the present application, which is not described herein for brevity.

Fig. 12 is a schematic block diagram of a chip 700 according to an embodiment of the present application. The chip 700 includes a processor 710, and the processor 710 may call and run a computer program from memory to implement the methods of embodiments of the present application.

Optionally, chip 700 may also include memory 720. The processor 710 may call and execute a computer program from the memory 720 to implement the method performed by the terminal device or the network device in the embodiment of the present application.

Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

Optionally, the chip 700 may also include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip 700 may be applied to a network device in the embodiment of the present application, and the chip 700 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip 700 may be applied to a terminal device in the embodiment of the present application, and the chip 700 may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

The chips applied to the network device and the terminal device may be the same chip or different chips.

It should be appreciated that the chip 700 referred to in embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

The processors mentioned above may be general purpose processors, digital Signal Processors (DSP), off-the-shelf programmable gate arrays (field programmable GATE ARRAY, FPGA), application SPECIFIC INTEGRATED Circuits (ASIC) or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor.

The memory mentioned above may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (erasable PROM), an electrically erasable programmable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM).

It should be appreciated that the above memory is exemplary and not limiting, and for example, the memory in the embodiments of the present application may be static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous connection dynamic random access memory (SYNCH LINK DRAM, SLDRAM), direct Rambus RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 13 is a schematic block diagram of a communication system 800 in accordance with an embodiment of the present application. The communication system 800 includes a terminal device 810 and a network device 820.

The terminal device 810 is configured to receive configuration information for activating TCI state switching, where the configuration information for activating TCI state switching is further configured to instruct the terminal device to perform fast adjustment based on the first reference signal, and the terminal device 810 performs TCI state switching based on the configuration information for activating TCI state switching.

The network device 820 is configured to send configuration information for TCI state switching, where the configuration information for activating TCI state switching is further configured to instruct the terminal device to make a fast adjustment based on the first reference signal.

Wherein the terminal device 810 may be used to implement the corresponding functions implemented by the terminal device in the above-described method, and the network device 820 may be used to implement the corresponding functions implemented by the network device in the above-described method. For brevity, the description is omitted here.

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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the application, 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., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (Solid STATE DISK, SSD)), etc.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily appreciate variations or alternatives within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A state switching method, comprising:

The terminal device receives configuration information for activating TCI state switching, where the configuration information for activating TCI state switching is further used to instruct the terminal device to perform fast adjustment based on the first reference signal;

The terminal device performs the TCI state switching based on the configuration information for activating the TCI state switching;

The fast adjustment based on the first reference signal includes at least one of timing adjustment, beam direction adjustment and reference signal power adjustment based on at least one first reference signal.

2 . The method according to claim 1 , wherein a period of the first reference signal is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

3. The method according to claim 1, wherein the period of the first reference signal is a specified synchronization channel/physical broadcast channel block SSB period, and the specified SSB period is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

4. The method according to claim 1, wherein the configuration information for activating TCI state switching is at least one of the following:

First configuration information for activating TCI state switching through radio resource control RRC;

Second configuration information for activating TCI state switching through a medium access control-control element MAC CE;

The third configuration information for activating TCI state switching through downlink control information DCI.

5. The method according to claim 4, wherein the first configuration information includes at least one of the following:

a first reference signal;

A resource identifier of the first reference signal;

The period of the first reference signal.

6 . The method according to claim 5 , wherein the first reference signal is a tracking reference signal (TRS), and the resource identifier of the first reference signal is a TRS resource identifier.

7. The method according to claim 5, wherein the first reference signal is a channel state information-reference signal CSI-RS or SSB, and the period corresponding to the resource identifier of the first reference signal is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

8. The method according to claim 4, wherein the second configuration information is at least one of the following:

Activate/deactivate the TCI state of the physical downlink shared channel PDSCH MAC CE dedicated to the terminal device;

TCI status indication for the physical downlink control channel PDCCH MAC CE dedicated to the terminal device.

9. The method according to claim 8, wherein the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device includes an extension bit, and the extension bit is used to indicate the first reference signal.

10. The method according to claim 8, wherein at least one TCI state identifier in the terminal device-specific PDSCH MAC CE or the terminal device-specific PDCCH MAC CE is used to indicate the first reference signal.

11. The method according to claim 4, wherein the third configuration information includes at least one of the following:

a first reference signal;

The period of the first reference signal.

12. The method according to any one of claims 1 to 11, wherein the terminal device performs the TCI state switching based on the configuration information for activating the TCI state switching, comprising:

Determine a first delay of the TCI state switching based on the first reference signal;

Determine a second delay of the TCI state switching based on a second reference signal, where the second reference signal is a CSI-RS or an SSB;

When the first delay is less than the second delay, the TCI state switching is performed based on the period and processing delay of the first reference signal.

The method according to claim 12 , wherein a period of the first reference signal is smaller than a period of the second reference signal.

14. The method according to claim 12, wherein determining the first delay of the TCI state switching based on the first reference signal comprises:

When the target TCI state is known, the terminal device determines the first delay based on the period and processing delay of the first reference signal.

15. The method according to claim 12, wherein determining the first delay of the TCI state switching based on the first reference signal comprises:

When the target TCI state is unknown, the terminal device determines the first delay based on the first layer reference signal received power L1-RSRP measurement time, the period of the first reference signal and the processing delay.

16. The method according to claim 13, wherein the method further comprises:

After receiving and processing the activation signaling and then the first delay, the terminal device receives the PDCCH in the target TCI state.

17. The method of claim 12, wherein the terminal device does not require receiving or sending data within the first delay.

18. The method according to any one of claims 1 to 11, wherein the method further comprises:

The terminal device reports the capability of supporting rapid adjustment of TCI state switching and/or makes a request for rapid adjustment of TCI state switching.

19. The method according to any one of claims 1 to 11, wherein the method further comprises:

The terminal device receives the TCI status indicated by the network device for downlink transmission.

20. A state switching method, comprising:

The network device sends configuration information for activating TCI state switching, where the configuration information for activating TCI state switching is also used to instruct the terminal device to perform rapid adjustment based on the first reference signal;

21 . The method according to claim 20 , wherein a period of the first reference signal is smaller than a time threshold and/or belongs to a period included in a fast adjustment period set.

22. The method according to claim 20, wherein the period of the first reference signal is a specified SSB period, and the specified SSB period is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

23. The method according to claim 20, wherein the configuration information for activating TCI state switching is at least one of the following:

First configuration information for activating TCI state switching through RRC;

Activate second configuration information of TCI state switching through MAC CE;

The third configuration information for activating TCI state switching through DCI.

24. The method according to claim 23, wherein the first configuration information includes at least one of the following:

a first reference signal;

A resource identifier of the first reference signal;

The period of the first reference signal.

25 . The method according to claim 24 , wherein the first reference signal is a tracking reference signal (TRS), and the resource identifier of the first reference signal is a TRS resource identifier.

26. The method according to claim 24, wherein the first reference signal is CSI-RS or SSB, and the period corresponding to the resource identifier of the first reference signal is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

27. The method according to claim 23, wherein the second configuration information is at least one of the following:

Activate/deactivate TCI state for PDSCH MAC CE dedicated to terminal equipment;

TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

28. The method according to claim 27, wherein the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device includes an extension bit, and the extension bit is used to indicate the first reference signal.

29. The method according to claim 27, wherein at least one TCI state identifier in the terminal device-specific PDSCH MAC CE or the terminal device-specific PDCCH MAC CE is used to indicate the first reference signal.

30. The method according to claim 23, wherein the third configuration information includes at least one of the following:

a first reference signal;

The period of the first reference signal.

31. The method according to any one of claims 20 to 30, wherein a period of the first reference signal is smaller than a period of a second reference signal, and the second reference signal is a CSI-RS or an SSB.

32. The method according to any one of claims 20 to 30, wherein the method further comprises:

The network device receives the capability of supporting rapid adjustment of TCI state switching and/or the request for rapid adjustment of TCI state switching reported by the terminal device.

33. The method according to any one of claims 20 to 30, wherein the method further comprises:

The network device sends a TCI status indicating downlink transmission to the terminal device.

34. A terminal device, comprising:

A receiving unit, configured to receive configuration information for activating TCI state switching, wherein the configuration information for activating TCI state switching is further used to instruct the terminal device to perform a fast adjustment based on the first reference signal;

a processing unit, configured to perform the TCI state switching based on the configuration information for activating the TCI state switching;

35. The terminal device according to claim 34, wherein a period of the first reference signal is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

36. The terminal device according to claim 34, wherein the period of the first reference signal is a specified SSB period, and the specified SSB period is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

37. The terminal device according to claim 34, wherein the configuration information for activating TCI state switching is at least one of the following:

First configuration information for activating TCI state switching through RRC;

38. The terminal device according to claim 37, wherein the first configuration information includes at least one of the following:

a first reference signal;

A resource identifier of the first reference signal;

The period of the first reference signal.

39. The terminal device according to claim 38, wherein the first reference signal is a tracking reference signal TRS, and the resource identifier of the first reference signal is a TRS resource identifier.

40. The terminal device according to claim 38, wherein the first reference signal is CSI-RS or SSB, and the period corresponding to the resource identifier of the first reference signal is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

41. The terminal device according to claim 37, wherein the second configuration information is at least one of the following:

Activate/deactivate TCI state for PDSCH MAC CE dedicated to terminal equipment;

TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

42. The terminal device according to claim 41, wherein the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device includes an extension bit, and the extension bit is used to indicate the first reference signal.

43. The terminal device according to claim 41, wherein at least one TCI state identifier in the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device is used to indicate the first reference signal.

44. The terminal device according to claim 37, wherein the third configuration information includes at least one of the following:

a first reference signal;

The period of the first reference signal.

45. The terminal device according to any one of claims 34 to 44, wherein the processing unit is further configured to:

46. The terminal device according to claim 45, wherein a period of the first reference signal is smaller than a period of the second reference signal.

47. A terminal device according to claim 45, wherein the processing unit is used to determine the first delay of the TCI state switching based on the first reference signal, including: when the target TCI state is known, the terminal device determines the first delay based on the period and processing delay of the first reference signal.

48. The terminal device according to claim 45, wherein the processing unit is used to determine the first delay of the TCI state switching based on the first reference signal, including: when the target TCI state is unknown, the terminal device determines the first delay based on the L1-RSRP measurement time, the period of the first reference signal and the processing delay.

49. The terminal device according to claim 46, wherein the receiving unit is also used to receive the PDCCH using the target TCI state after receiving and processing the activation signaling and then the first time delay.

50. The terminal device of claim 45, wherein the terminal device is not required to receive or send data during the first delay.

51. The terminal device according to any one of claims 34 to 44, wherein the terminal device further comprises:

A reporting unit, used to report the capability of supporting rapid adjustment of TCI state switching and/or a request for rapid adjustment of TCI state switching.

52. A terminal device according to any one of claims 34 to 44, wherein the receiving unit is also used to receive the TCI status indicated by the network device for downlink transmission.

53. A network device comprising:

A sending unit, configured to send configuration information for activating TCI state switching, wherein the configuration information for activating TCI state switching is further used to instruct the terminal device to perform fast adjustment based on the first reference signal;

54. The network device according to claim 53, wherein a period of the first reference signal is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

55. The network device according to claim 53, wherein the period of the first reference signal is a specified SSB period, and the specified SSB period is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

56. The network device according to claim 53, wherein the configuration information for activating TCI state switching is at least one of the following:

First configuration information for activating TCI state switching through RRC;

57. The network device according to claim 56, wherein the first configuration information includes at least one of the following:

a first reference signal;

A resource identifier of the first reference signal;

The period of the first reference signal.

58. The network device according to claim 57, wherein the first reference signal is a tracking reference signal (TRS), and the resource identifier of the first reference signal is a TRS resource identifier.

59. The network device according to claim 57, wherein the first reference signal is CSI-RS or SSB, and the period corresponding to the resource identifier of the first reference signal is less than a time threshold and/or belongs to a period included in a fast adjustment period set.

60. The network device according to claim 56, wherein the second configuration information is at least one of the following:

Activate/deactivate TCI state for PDSCH MAC CE dedicated to terminal equipment;

TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

61. The network device according to claim 60, wherein the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device includes an extension bit, and the extension bit is used to indicate the first reference signal.

62. The network device according to claim 60, wherein at least one TCI state identifier in the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device is used to indicate the first reference signal.

63. The network device according to claim 56, wherein the third configuration information includes at least one of the following:

a first reference signal;

The period of the first reference signal.

64. The network device according to any one of claims 53 to 63, wherein a period of the first reference signal is smaller than a period of a second reference signal, and the second reference signal is a CSI-RS or an SSB.

65. The network device according to any one of claims 53 to 63, wherein the network device further comprises:

A receiving unit is used to receive the capability of supporting rapid adjustment of TCI state switching and/or a request for rapid adjustment of TCI state switching reported by the terminal device.

66. A network device according to any one of claims 53 to 63, wherein the sending unit is also used to send a TCI status indicating a downlink transmission to the terminal device.

67. A terminal device, comprising: a processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the terminal device executes the method as described in any one of claims 1 to 19.

68. A network device, comprising: a processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, so that the network device executes the method as claimed in any one of claims 20 to 33.

69. A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 19.

70. A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 20 to 33.

71. A computer-readable storage medium for storing a computer program, which, when executed by a device, causes the device to perform the method as claimed in any one of claims 1 to 19.

72. A computer-readable storage medium for storing a computer program, which, when executed by a device, causes the device to perform the method as claimed in any one of claims 20 to 33.

73. A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method as claimed in any one of claims 1 to 19.

74. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 20 to 33.