WO2022133692A1

WO2022133692A1 - Method for state switching, terminal device, and network device

Info

Publication number: WO2022133692A1
Application number: PCT/CN2020/138145
Authority: WO
Inventors: 胡荣贻
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2022-06-30
Also published as: CN116250328A

Abstract

The present application relates to a method for state switching, a terminal device, and a network device. The method for state switching comprises: a terminal device receives configuration information used for activating transmission configuration indicator (TCI) state switching, the configuration information used for activating TCI state switching being further used to instruct the terminal device to perform rapid adjustment on the basis of a first reference signal; and the terminal device performs TCI state switching on the basis of the configuration information used for activating TCI state switching. In the embodiments of the present application, by means of the configuration information used for activating TCI state switching, the terminal device is instructed to perform rapid adjustment on the basis of the first reference signal, so that latency can be reduced and throughput can be improved.

Description

State switching method, terminal device and network device

technical field

The present application relates to the field of communications, and more particularly, to a state switching method, terminal device and network device.

Background technique

During the state switching process of Transmission Configuration Indicator (TCI), if the activation signaling of TCI state switching is completed, it is necessary to receive reference signals such as Synchronization Signal/Physical Broadcast Channel Block (SS) /PBCH Block, SSB) to adjust the corresponding QCL information. If a user equipment (User Equipment, UE) may miss the reference signal closest to the activation signaling, the UE needs to wait for a long time gap and cannot receive and send data, resulting in great time waste (latency) and throughput loss.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a state switching method, a terminal device, and a network device, which can reduce time waste.

An embodiment of the present application provides a method for state switching, including:

The terminal device receives configuration information for activating the transmission configuration to indicate TCI state switching, and 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 network device sends configuration information for activating the transmission configuration to indicate TCI state switching, and 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.

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

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

A processing unit, configured to perform the TCI state switch based on the configuration information for activating the TCI state switch.

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

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

An embodiment of the present application provides a terminal device, including 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 that the terminal device executes the above-mentioned state switching method.

An embodiment of the present application provides a network device including 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 that the network device executes the above-mentioned state switching method.

An embodiment of the present application provides a chip for implementing the above method for state switching.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device on which the chip is installed executes the above-mentioned state switching method.

An embodiment of the present application provides a computer-readable storage medium for storing a computer program, when the computer program is run by a device, the device enables the device to perform the above method for state switching.

An embodiment of the present application provides a computer program product, including computer program instructions, and the computer program instructions cause a computer to execute the above method for state switching.

An embodiment of the present application provides a computer program, which, when running on a computer, enables the computer to execute the above method for state switching.

In this embodiment of the present application, the configuration information for activating TCI state switching instructs the terminal device to perform rapid adjustment based on the first reference signal, which can reduce time waste and improve throughput.

Description of 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 TCI state configuration of PDSCH.

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

FIG. 4 is a schematic flowchart of a method for state switching according to an embodiment of the present application.

FIG. 5 is a schematic flowchart of a method for state switching according to another embodiment of the present application.

FIG. 6 is a schematic diagram of a TCI status indication for a UE-specific PDCCH MAC CE.

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 according to 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 present application.

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

Detailed ways

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 solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (Advanced long term evolution, LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

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

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

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STAION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In this embodiment of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).

In this embodiment of the present application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.

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

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

As an example and not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellites may be low earth orbit (LEO) satellites, medium earth orbit (MEO) satellites, geostationary earth orbit (GEO) satellites, High Elliptical Orbit (HEO) satellites ) satellite etc. Optionally, the network device may also be a base station set in a location such as land or water.

In this embodiment of the present application, a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

FIG. 1 exemplarily shows a communication system 100 . The communication system includes one network device 110 and two terminal devices 120 . Optionally, the communication system 100 may include multiple network devices 110, and the coverage of each network device 110 may include other numbers of terminal devices 120, which are not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF) and other network entities, to which the embodiments of the present application Not limited.

Wherein, the network equipment may further include access network equipment and core network equipment. That is, the wireless communication system further includes a plurality of core networks for communicating with the access network equipment. The access network equipment may be a long-term evolution (long-term evolution, LTE) system, a next-generation (mobile communication system) (next radio, NR) system, or an authorized auxiliary access long-term evolution (authorized auxiliary access long-term evolution, LAA- The evolved base station (evolutional node B, may be referred to as eNB or e-NodeB for short) in the LTE) system is a macro base station, a micro base station (also called a "small base station"), a pico base station, an access point (AP), Transmission site (transmission point, TP) or new generation base station (new generation Node B, gNodeB), etc.

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system 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, and the network device and the terminal device may be specific devices in this embodiment of the application, which will not be repeated here; It may include other devices in the communication system, for example, other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

It should be understood that the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship. For example, if A indicates B, it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, which all belong to the embodiments of the present application. protected range.

1. TCI state (TCI-state): Quasi Co-Location (QCL) indication of downlink transmission

When the terminal is receiving signals, in order to improve the receiving performance, the characteristics of the transmission environment corresponding to the data transmission can be used to improve the receiving algorithm. For example, the channel estimator design and parameters can be optimized using the statistical properties of the channel. In the NR system, these characteristics corresponding to data transmission are represented by the quasi-co-located state (QCL-Info).

If the downlink transmission comes from different transmission and reception nodes (TRPs), panels (panels) or beams (beams), the characteristics of the transmission environment corresponding to the data transmission may also change. Therefore, in the NR system, when transmitting the downlink control channel or data channel, the network side can indicate the corresponding QCL state information to the terminal through the TCI state.

For example, a TCI state can contain the following configuration:

TCI state identifier (identifier, ID), used to identify a TCI state;

QCL info 1;

QCL information 2 (this information is optional).

Among them, a QCL information can contain the following information:

QCL type configuration, for example, can be one of QCL type A, QCL typeB, QCL typeC or QCL typeD;

QCL reference signal configuration, including the ID of the cell where the reference signal is located, the bandwidth part (Bandwidth Part, BWP) ID, and the identifier of the reference signal (for example, it can be Channel State Information-Reference Signal (Channel State Information-Reference Signal, CSI-RS) resource) ID or SSB index).

Among them, 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, and typeC, and the QCL type of the other QCL information (if configured) must be QCL type D.

Exemplarily, the meanings of different QCL type configurations are 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 shift, Doppler spread})

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

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

Exemplarily, the related configurations of the TCI state and the QCL quasi-co-located state are as follows:

In the NR system, the network side can indicate the corresponding TCI status for the downlink signal or downlink channel. If the network side configures the target downlink channel or the QCL reference signal of the target downlink signal as the reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as typeA, typeB or typeC, the terminal can assume the target downlink signal or target downlink channel. The large-scale parameters (such as SSB or CSI-RS resources) are the same, which can be determined by QCL type configuration.

Similarly, if the network side configures the target downlink channel or the QCL reference signal of the target downlink signal as the reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as typeD, the terminal can use and receive the reference SSB or reference CSI. - The receive beam with the same RS resource (ie Spatial Rx parameter) to receive the target downlink signal. Generally, the target downlink channel (or the target downlink signal) and its reference SSB or reference CSI-RS resource are transmitted by the same TRP or the same panel or the same beam on the network side. If the transmission TRPs, transmission panels or transmission beams of the two downlink signals or downlink channels are different, different TCI states are usually configured.

For downlink control channels such as the Physical Downlink Control Channel (PDCCH), the radio resource control (Radio Resource Control, RRC) signaling or RRC signaling + Medium Access Control (Media Access Control, MAC) signaling method to indicate the TCI status of the corresponding control resource set (Control ResourceSet, CORESET).

For downlink data channels such as Physical Downlink Shared Channel (PDSCH), the available TCI state set can be indicated through RRC signaling, and some TCI states in the set can be activated through MAC layer signaling, and finally through downlink control The TCI status indication field in the information (Downlink Control Information, DCI) indicates one or two TCI statuses from the activated TCI status for the PDSCH scheduled by the DCI. The case of 2 TCI states is mainly for the scenarios where multiple TRPs are similar. For example, referring to FIG. 2 , an available TCI state set is indicated through RRC signaling, which may include N candidate TCI states. K TCI states of the N candidate TCI states are activated through MAC signaling. 1 or 2 TCI states in use are indicated from the K active TCI states through the TCI state indication field in the DCI.

2. Description of TCI status: known and unknown

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

(1) At the end of the reference signal (Reference Signal, RS) resource used for the L1 (Layer 1)-RSRP (Reference Signal Receiving Power) measurement report for the target TCI state is transmitted to the active TCI The period during which state switching is completed, where the reference signal (RS) resource used for L1-RSRP measurement is the RS in the target TCI state or the RS in quasi-co-located to the target TCI state (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) During the last transmission of the RS resource for beam reporting or measurement, the TCI state switch command is received within 1280ms (TCI state switch command is received within 1280ms upon the last transmission of the RS resource for beam reporting or measurement.) .

(3) Before the TCI state switch command, the UE sends at least one L1-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 switching period, the TCI state remains detectable (The TCI state remains detectable during the TCI state switching period.).

(5) During TCI switching, the SSB associated with the TCI state remains detectable during the TCI switching period.

(6) SNR of the TCI state≥-3dB (SNR of the TCI state≥-3dB).

Otherwise, the TCI state is unknown. (Otherwise, the TCI state is unknown.).

3. Delay requirements:

For example, TCI-state switching of the following three active configuration modes is supported. corresponding to different requirements.

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

Delay of TCI state switching based on RRC;

DCI-based TCI state switching delay.

Take MAC-CE activation as an example:

(1) Activation/Deactivation of UE-specific PDSCH TCI state (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 activation/deactivation of the TCI state for the UE-specific PDSCH MAC CE. The TCI states configured for PDSCH are initially deactivated during configuration 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 shall: If the MAC entity receives the TCI state activation/deactivation for the UE-specific PDSCH MAC CE in the serving cell, indicate to lower layers the information related to the TCI state activation/deactivation for the UE-specific PDSCH MAC CE.

(The MAC entity shall:

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

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

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

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

The MAC entity shall: if the MAC entity receives the TCI status indication for the UE-specific PDCCH MAC CE in the serving cell, indicate to the lower layer information related to the TCI status indication for the UE-specific PDSCH MAC CE.

(The MAC entity shall:

1>if the MAC entity receivers 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.)

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

If the target TCI state is known until the PDSCH carrying the MAC-CE activation command is received at slot n (slot n), the UE shall be able to adopt the target TCI state of the serving cell where the TCI state switch is currently occurring.

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

Before, the UE was able to receive PDCCH in the old TCI state (the old TCI state).

in,

T _HARQ _is the timing between DL data transmission and acknowledgement as specified;

T _first-SSB is the time when the UE first transmits SSB after decoding the MAC CE command; SSB should be the time from QCL-TypeA or QCL-TypeC to the 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;

TOk=1 if the target TCI state is not in the active TCI state list for PDSCH, otherwise TOk=0 ( _TOk =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 the PDSCH carrying the MAC-CE activation command is received at slot n, the UE can adopt the target TCI state of the serving cell where the TCI state switch is currently occurring, and

The first slot after that receives the PDCCH. exist

in,

In FR1, or when the TCI state switching not involving 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 Rx beam refinement in FR2, defined as (Otherwise, T _L1-RSRP is the time for Rx beam refinement in FR2, 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);

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

Configured with higher layer parameter repetition set to ON (configured with higher layer parameter repetition set to ON);

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

For aperiodic CSI-RS, whether the number of resources in the resource set is at least equal to the maximum number of receive 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 CSI-RS based L1-RSRP measurement; and TO _uk =0 for SSB based L1-RSRP measurement (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 when TCI state switching involves other QCL types only);

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

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 shall be QCL Type A or QCL Type C (The SSB shall be the QCL-TypeA or QCL-TypeC to target TCI state.).

In the embodiments of this application, the frequency range of 5G NR can be divided into different FRs: FR1 and FR2. The frequency range FR1 can be the 5G Sub-6GHz (below 6GHz) frequency band, and the frequency range FR2 can be the 5G millimeter wave frequency band.

Referring to Figure 3, in one scenario, in the TCI handover request, there is a transition from "slot n+T _HARQ +(3ms)/NR slot length" to "slot n+T _HARQ +(3ms+TOk*(T _first-SSB " +T _{SSB proc} ))/NR slot length” time slot. Since the UE is not required to receive DL data during this time gap, if the first SSB arrives after 160ms, the throughput performance may be affected. Further, during the time interval of T _first-SSB , it needs to be discussed whether the UE behavior can be enhanced to receive DL data. In this example it is assumed that the SSB burst periodicity is equal to 160ms.

The working scope (Working Scope) involved in Figure 3 may include TCI handover enhancements [RAN4, RAN1]:

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

Work to maintain enhanced viability of UE reception and transmission during the period (or part of the period) of RRC-based TCI handover.

Currently, the MAC CE or RRC mode activates TCI state switching, and the UE uses the old TCI state to receive the PDCCH until

After the UE receives and processes the activation signaling, it still needs to wait for a period of time (represented by gap1), that is:

The first slot after that can start to receive the PDCCH or PDSCH with the new TCI state. Wherein, slot n represents the time slot in which the PDSCH carrying the MAC-CE or RRC activation command is received. T _HARQ represents the time between downlink (DL) data transmission and acknowledgment.

Indicates the slot length, which is related to the subcarrier spacing.

The reason for the generation of gap1 during this time gap is mainly because reference signals such as SSB need to be received to adjust the corresponding QCL information. For example, it is possible to adjust the power, beam direction or timing of the reference signal, etc., which can be specifically implemented by the UE. The length of the time gap gap1 depends on the period and time offset of the reference signal such as the SSB.

As shown in Figure 3, if the activation signaling process is just completed

If a reference signal SSB is missed, and the SSB period is 160ms, the UE needs to wait for a gap 1 of 160ms to be unable to receive and transmit data, thus causing a lot of time waste (latency) and throughput loss.

The embodiments of the present application can provide several efficiencies to improve the activation and use of TCI states, reduce interruption gaps (gap) caused by TCI state switching, and ensure that the UE quickly completes TCI state switching and starts transmission, thereby reducing time waste and throughput loss.

FIG. 4 is a schematic flowchart of a method 200 for state switching according to an embodiment of the present application. The method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following.

S210, the terminal device receives configuration information for activating the transmission configuration indication (TCI) state switching, and the configuration information for activating the TCI state switching is also used to instruct the terminal device to perform fast adjustment (fast adjustment) based on the first reference signal.

S220. The terminal device performs the TCI state switch based on the configuration information for activating the TCI state switch.

Exemplarily, the configuration information for activating TCI state switching may include information for activating the first reference signal.

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

Exemplarily, performing the quick adjustment based on the first reference signal may include performing one short timing adjustment (one short timing adjustment) based on the one first reference signal. In addition, performing fast adjustment based on the first reference signal may further include performing adjustment of QCL information such as beam direction and reference signal power based on one first reference signal. The configuration information may include an activation command for TCI state switching. After receiving and processing the activation command for TCI state switching, after a period of time gap (gap) in which data cannot be received and sent, the time gap may be based on a first reference signal. The period T _period and the processing delay T _Pro are determined, and the terminal device can complete the adjustment of the QCL information within the time gap. For example, adjust the power, beam direction or timing of the reference signal, etc.

Exemplarily, performing fast adjustment based on the first reference signal may also include performing at least one of timing adjustment, beam direction adjustment, and reference signal power adjustment based on multiple first reference signals. If the capability of the terminal device is insufficient to support fast adjustment, it may be necessary to wait for multiple cycles of the first reference signal to complete the adjustment. In this case, after the terminal device has processed the activation signaling, the elapsed time gap (gap) during which data cannot be received and sent may be determined based on multiple periods T _period of the first reference signal, processing delay T _Pro , and the like.

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

Exemplarily, a time threshold may be preset, such as 25 ms, and the period of the first reference signal may be configured to be a short period by using the time threshold.

Exemplarily, a set of rapid adjustment periods may be preset, and the set of rapid adjustment periods may include multiple periods. For example, short periods of 5ms, 10ms, 20ms, etc. The period of the first reference signal can also be configured as a short period by using the set of fast adjustment periods.

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

Illustratively, the SSB period may be 5ms, 10ms, 20ms, 40ms, 80ms or 160ms. If the time threshold is 50ms, the specified SSB period can be 5ms, 10ms, 20ms or 40ms. If the SSB period included in the fast adjustment period set includes 5ms, 10ms and 20ms, the designated SSB period may be 5ms, 10ms or 20ms.

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

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

Activate the second configuration information of TCI state switching by MAC CE;

The third configuration information of TCI state switching is activated through DCI.

Optionally, if the TCI state switching is activated through RRC, the first configuration information includes at least one of the following:

a first reference signal;

the resource identifier of the first reference signal;

Period of the first reference signal.

Exemplarily, the first configuration information may be carried through RRC signaling, and a reference signal for fast adjustment, that is, a first reference signal, is activated while the TCI state switching is activated through 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 may be a reference signal with a defined short period such as CSI-RS or SSB.

Optionally, the first reference signal is a tracking reference signal (TRS), and a resource identifier of the first reference signal is a TRS resource identifier. Exemplarily, the period of the TRS is generally short. If a new TRS is added while the activation command is sent, the period and processing delay of the TRS can be used to quickly adjust (eg, acquire timing, etc.) based on the first reference signal.

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

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

TCI state activation (Activation)/deactivation (Deactivation) for a terminal device-specific (specific) PDSCH MAC CE.

TCI status indication for terminal equipment-specific PDCCH MAC CEs.

Exemplarily, the second configuration information may be carried through MAC CE signaling, and at the same time that the TCI state switching is activated through MAC CE signaling, a reference signal for fast adjustment, that is, the first reference signal, is activated.

Optionally, TCI state switching can be activated through RRC and MAC CE.

Exemplarily, the reference signal used for fast adjustment, that is, the first reference signal, is marked in the TCI state activated by RRC signaling, and the fast TCI state switching based on the first reference signal is triggered by MAC CE signaling.

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

Exemplarily, an extension bit (bit) may be added after the TCI state identifier, the value of the extension bit may indicate the newly added TCI state identifier, and the newly added TCI state identifier may correspond to the first reference signal.

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

Exemplarily, the original TCI state identifier may also be modified, so that the original TCI state identifier may correspond to the first reference signal.

Optionally, if the TCI state switching is activated through DCI, the third configuration information includes at least one of the following:

a first reference signal;

Period of the first reference signal.

Exemplarily, the first configuration information may be carried through the DCI, and when the TCI state switching is activated through the DCI, a reference signal for fast adjustment, that is, the first reference signal, is activated.

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

determining the first time delay of the TCI state switching based on the first reference signal;

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

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

Exemplarily, after receiving the configuration information for activating TCI state switching, the terminal device may determine the first delay, that is, the time gap gap1, based on the first reference information for fast adjustment activated by the configuration information. If the original second reference signal used for TCI state switching is CSI-RS or SSB, an original second delay can be determined based on the period and processing delay of the CSI-RS or SSB, that is, the time gap gap2 . If gap1 is smaller than gap2, it means that the time during which the terminal device does not 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 the gap1 is not smaller than the gap2, the TCI state switching may be continued based on the period and processing delay of the second reference signal 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 switching based on the first reference signal includes: in the case that the target TCI state is known, the terminal device is based on the period and processing delay of the first reference signal, The first delay is determined.

Exemplarily, 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 measure the Layer 1 reference signal received power (L1-RSRP), 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 delay of the TCI state switching based on the first reference signal includes: when the target TCI state is unknown, the terminal device measures time based on L1-RSRP, the period of the first reference signal and the processing delay to determine the first delay.

If the target TCI state is unknown, the terminal device needs to measure the Layer 1 Reference Signal Received Power (L1-RSRP). time delay. For example, the period T _first-RS1 of the first reference signal RS1 and the processing delay sum T _RS1-proc , the total first delay is T _L1-RSRP +TO _uk *(T _first-RS1 +T _RS1-proc ). Wherein T _L1-RSRP is the L1-RSRP measurement time, and TO _uk is a value determined based on the QCL type and the reference signal type. For example, when the quasi-colocation type of TCI state switching is QCL-TypeD, TO _uk =1; otherwise, TO _uk =0.

Optionally, the method further includes:

After receiving and processing the activation signaling and then interval the first time delay, the terminal device adopts the target TCI state to receive the PDCCH.

Exemplarily, after receiving and processing the activation signaling of the MAC CE or the RRC activation signaling, the terminal device may use the switched target TCI state to receive the PDCCH after completing the quick adjustment of the QCL information after a first delay interval.

Optionally, the terminal device is not required to receive or send data within the first delay.

Optionally, the method further includes:

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

Exemplarily, some terminal devices can determine that they have the ability to support fast adjustment of TCI state switching. Such a terminal device may first report to the network device its ability to support rapid adjustment of TCI state switching and/or a request for rapid adjustment of TCI state switching, and after receiving the capability and/or request, the network device sends a message to the terminal device. Configuration information for activating TCI state switching.

Optionally, the method further includes:

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

Exemplarily, the network device may first instruct the terminal device to send the TCI state of the downlink signal or downlink channel, and then send the configuration information for activating the TCI state switching to the terminal device. That is, the terminal device may first receive the TCI state indicated by the network device as a downlink signal or a downlink channel, and then receive the configuration information used by the network device to activate TCI state switching.

FIG. 5 is a schematic flowchart of a method 300 for state switching according to an embodiment of the present application. The method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following.

S310: The network device sends configuration information for activating the transmission configuration to indicate TCI state switching, and the configuration information for activating TCI state switching is also used to instruct the terminal device to perform fast adjustment based on the first reference signal.

Optionally, 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.

Activate the second configuration information of TCI state switching by MAC CE;

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

a first reference signal;

the resource identifier of the first reference signal;

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

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

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

TCI status indication for terminal equipment-specific PDCCH MAC CEs.

Optionally, an extension bit is included in the dedicated PDSCH MAC CE of the terminal device, and the extension bit is used to indicate the first reference signal.

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

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

a first reference signal;

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 includes:

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

Optionally, the method further includes:

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

For a specific example of the method 300 performed by a network device in this embodiment, reference may be made to the relevant description on the network side or a network device such as a base station in the foregoing method 200, which is not repeated here for brevity.

In an exemplary scenario, the method for state switching in this embodiment of the present application is a new method for supporting fast TCI state switching, which mainly includes the following contents:

The design of MAC-CE activation signaling is enhanced to support rapid configuration of reference signals;

Enhanced RRC activation signaling design to support rapid configuration of reference signals;

The activation signaling design of hybrid DCI is enhanced to support rapid configuration of reference signals;

Design of a dedicated TCI state list (list) suitable for enhanced capability UEs.

Using the state switching method of the embodiment of the present application can improve the efficiency of TCI state activation and use, reduce the interruption gap (gap) caused by TCI state switching; ensure that the UE quickly completes the TCI state switching and starts transmission, and reduces throughput loss.

Here are a few specific examples:

Example 1: Enhanced design of MAC-CE activation signaling to support rapid configuration of reference signals

S11. The network side may indicate the corresponding TCI state for the downlink signal or downlink channel.

S12. When the network configures the TCI-state switching (TCI-state switching) activated by the MAC-CE, the configuration of a new reference signal RS1 can be activated at the same time for the quick adjustment of the UE (one short timing adjustment). For example, the configuration of the new reference signal RS1 may instruct the UE to perform fast adjustment based on the RS1. The TCI state switch activated by the MAC-CE can be configured in at least one of the following manners:

TCI state activation/deactivation for UE-specific PDSCH MAC CE (TCI States Activation/Deactivation for UE-specific PDSCH MAC CE;);

TCI state 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 state ID (TCI stateID) field in the above configuration manner. Wherein, the TCI state identification field may represent the TCI state identified by the TCI-StateId, which is applicable to the control resource set identified by the CORESET ID field. If the CORESET ID field is set to 0, this field represents the TCI-StateId of the first 64 TCI states configured by tix-States-ToAddModList and tix-States-ToReleaseList in the PDSCH configuration in the active BWP. If the field of CORESET ID is set to a value other than 0, this field represents the TCI state list (TCI-StateList) and TCI state PDCCH addition list configured by the TCI-StateId in the control resource set identified by the CORESET ID (TCI-StatesPDCCH-ToAddList) and TCI state PDCCH deletion list (TCI-StatesPDCCH-ToReleaseList). The length of the TCI state identification field is 7 bits (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 7bits.).

Exemplarily, referring to FIG. 6 , the TCI state indication for the UE-specific PDCCH MAC CE may include a serving cell ID (Serving Cell ID), a CORESET ID, a TCI state ID (TCI state ID), and the like. Specifically, the related configuration in the enhanced UE-specific PDCCH MAC CE can be improved. E.g,

Extension bit (bit): add a bit after the TCI state ID to indicate the configuration of RS1, or

Do not expand bit (bit): directly specify the dedicated TCI state ID (predefine a TCI state ID list bound for RS1).

In this embodiment of the present application, the period of RS1 may be a short period (eg 5ms, 10ms, 20ms)

S13, the UE receives and processes the activation signaling

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

S14. The UE needs to meet the specified time delay requirement to complete the handover process in the above step S13, and the UE is not required to receive or send data in the gap.

S14-1: For the target TCI state is known (known), if the current target TCI state is in the active TCI state list for PDSCH (active TCI state list for PDSCH), the TCI state switching delay requirement becomes more than the general requirement. short. For example, the time of gap1, compared with the situation shown in FIG. 3, changes from the previous T _first-SSB and T _SSB-proc to the new reference signal RS1 period T _first-RS1 and processing delay and T _RS1-proc respectively , the total gap1 is also shortened, namely (T _first-RS1 +T _RS1-proc ).

S14-2: For the target TCI state is unknown (unknown), if the current target TCI state is in the active TCI state list for PDSCH, the TCI-state switch delay requirement becomes shorter than the existing protocol requirement. For example, the time of gap1, compared with the situation shown in FIG. 3, changes from the previous T _first-SSB and T _SSB-proc to the new reference signal RS1 period T _first-RS1 and processing delay T _RS1-proc respectively , the total gap1 is also shortened, namely T _L1-RSRP +TO _uk *(T _first-RS1 +T _RS1-proc ). Where T _L1-RSRP and TO _uk can be as follows.

T L1-RSRP =0 in FR1 or when the TCI state switching not involving QCL-TypeD in FR2. 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 Rx beam refinement in FR2, defined as (T _L1-RSRP is the time for Rx beam refinement in FR2, 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), is configured with higher layer parameter repetition set to ON (configured with higher layer parameter repetition set to ON), assuming M=1 For periodic CSI-RS (with the assumption of M=1 for periodic 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 RS1), is configured with higher layer parameter repetition set to ON (configured with higher layer parameter repetition set to ON), assuming M=1 for periodic RS1 (

with the assumption of M=1 for periodic RS1). If the number of resources in the resource set is at least equal to the maximum number of received beams Max Number Rx Beam, it can be used for periodic RS1 (for aperiodic RS1 if number of resources in resource set at least equal to MaxNumber Rx Beam), and _Report = 0 (with T _Report = 0)

Optionally, T _L1-RSRP of CSI-RS may be used, or even a shorter T _L1-RSRP may be defined for TRS.

TO _uk =0 for RS1 based L1-RSRP measurement when TCI state switching involves QCL-TypeD, otherwise TO _uk =1 (TO _uk =0 for RS1 based L1-RSRP measurement when TCI state switching involves QCL-TypeD, Otherwise TO _uk = 1.).

T _first-RS1 _may be 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 MAC CE command is decoded by the UE for other QCL types when 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 RS1.). Generally constant, even shorter than 2ms.

Exemplarily, if SSB is used as the reference signal, and the SSB period is 80ms. If the period of the reference signal RS1 used is 10ms. Compared with using SSB, using RS1 can significantly shorten the interruption of data transmission to the current serving cell during TCI state handover, improve handover efficiency, and reduce throughput loss, especially PDCCH transmission rate loss.

Example 2: Activating RRC signaling design enhancement to support rapid configuration of reference signals

S21. The network side may indicate the corresponding TCI state for the downlink signal or downlink channel.

S22. When the network configures the TCI-state switching (TCI-state switching) activated by the RRC, the configuration of a new reference signal RS1 is activated at the same time for the UE to quickly adjust (one short timing adjustment).

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

For example, a referenceSignal (reference signal) field is added to indicate the configuration of RS1, such as TRS and TRS-ResourceID.

For another example, modify the referenceSignal: a segment of NZP-CSI-RS-ResourceId (non-zero-power CSI-RS resource identifier) designated for the CSI-RS configuration, which corresponds to a short-period RS1.

For example, the period of RS1 is short period (eg 5ms, 10ms, 20ms)

The following is an example of a configuration that improves the enhanced TCI state (TCI-State) and the quasi-co-located state (QCL-Info):

The UE receives and processes the activation signaling (for example, the elapsed time length is

), after a gap interval, after receiving and processing the first reference signal (for example, the elapsed time length is TO _k *(T _first-SSB + T _SSB-proc )), the UE can use the new TCI state to receive PDCCH.

When the UE completes the handover process in the above step S23, it needs to meet the specified time delay requirement, and the UE does not require to receive or send data in the gap.

S24-1: For the target TCI state is known (known), if the current target TCI state is in the active TCI state list for PDSCH (active TCI state list for PDSCH), the TCI state switching delay requirement becomes longer than the general requirement short. For example, the time of gap1, compared with the situation shown in FIG. 3, changes from the previous T _first-SSB and T _SSB-proc to the new reference signal RS1 period T _first-RS1 and processing delay T _RS1-proc respectively, The total gap1 is also shortened, ie (T _first-RS1 +T _RS1-proc ).

S24-2: For the target TCI state is unknown (unknown), if the current target TCI state is in the active TCI state list for PDSCH, the TCI-state switch delay requirement becomes shorter than the existing protocol requirement. For example, the time of gap1, compared with the situation shown in FIG. 3, changes from the previous T _first-SSB and T _SSB-proc to the new reference signal RS1 period T _first-RS1 and processing delay and T _{RS1- proc} , the total gap is also shortened, namely T _L1-RSRP +TO _uk *(T _first-RS1 +T _RS1-proc ). For T _L1-RSRP and TO _uk , please refer to the relevant description of Example 1.

The state switching method of this example can shorten the interruption of data transmission to the current serving cell during the TCI state switching, improve the switching efficiency, and reduce the throughput loss, especially the loss of the PDCCH transmission rate.

Example 3: TCI state activated by MAC-CE or RRC switches hybrid DCI to activate RS, supports quick configuration and quick adjustment of reference signals (one short timing adjustment), and shortens gap1.

S31. The network side may indicate the corresponding TCI state for the downlink signal or downlink channel.

S32. When the network configures the TCI-state switching activated by the MAC-CE or the RRS, the network configuration triggers a DCI to activate a configuration of a new reference signal RS1 for quick adjustment of the UE (one short timing adjustment). Generally, the period of RS1 is a short period (such as 5ms, 10ms, 20ms)

For S33, reference may be made to the related descriptions of S13 and S23 in the above example.

For S34, reference may be made to the related descriptions of S14 and S24 in the above example.

In this example, DCI can be used to flexibly configure the reference signal for TCI state switching, which can meet services with different delay requirements, especially to shorten existing interruptions and enhance the design of TCI state switching, which can improve switching efficiency and reduce throughput. The loss of volume is especially the loss of PDCCH transmission rate.

Example 4: DCI-activated TCI state switching Hybrid DCI-activated RS, supporting fast reference signal configuration and one shot ajustement, shortening gap1

S41. The network side may indicate the corresponding TCI state for the downlink signal or downlink channel

S42. When the network configures the DCI-activated TCI-state switching, at the same time, the network configuration triggers a DCI to activate a configuration of a new reference signal RS1, which is used for a quick adjustment of the UE (one short timing adjustment). For example, the period of RS1 can be short period (eg 5ms, 10ms, 20ms)

For S43, reference may be made to the related descriptions of S13 and S23 in the above example.

For S44, reference may be made to the related descriptions of S14 and S24 in the above example.

In this example, DCI can be used to flexibly configure the reference signal for TCI state switching, which can meet services with different delay requirements, especially shorten the existing interruption and enhance the design of TCI state switching, which can improve the switching efficiency and reduce the The throughput loss is especially the loss of the PDCCH transmission rate.

In any of the above examples, the UE may also first 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 the corresponding TCI status for the downlink signal or downlink channel.

Example 5: Active TCI state list update

For dedicated RSs that can support fast TCI state switching, a subset is preconfigured or demarcated in the active TCI state list. Once the UE supports or reports the capability of fast TCI state switching, the network can configure this group of TCI state list TCI state list1 when performing TCI state switching for the UE.

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

a receiving unit 410, configured to receive configuration information for activating the transmission configuration to indicate TCI state switching, and the configuration information for activating TCI state switching is also 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 the TCI state switch based on the configuration information for activating the TCI state switch.

Activate the second configuration information of TCI state switching by MAC CE;

a first reference signal;

the resource identifier of the first reference signal;

Period of the first reference signal.

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

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

TCI status indication for terminal equipment-specific PDCCH MAC CEs.

a first reference signal;

Period of the first reference signal.

Optionally, the processing unit 420 is also used for:

Optionally, the processing unit 420 is configured to determine the first delay of the TCI state switching based on the first reference signal, including: in the case that the target TCI state is known, the terminal device 400 based on the first reference signal The cycle and processing delay are determined to determine the first delay.

Optionally, the processing unit 420 is configured to determine the first time delay of the TCI state switching based on the first reference signal, including: when the target TCI state is unknown, the terminal device 400 measures time based on L1-RSRP, The period and processing delay of the first reference signal determine the first delay.

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

Optionally, the terminal device 400 is not required to receive or send data within the first delay.

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

The reporting unit 430 is configured to report the capability of supporting fast adjustment of TCI state switching and/or a request for fast adjustment of TCI state switching.

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

The terminal device 400 in this embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method embodiments. For the corresponding processes, functions, implementations, and beneficial effects of each module (submodule, unit, or component, etc.) in the terminal device 400, reference may be made to the corresponding descriptions in the foregoing method embodiments, which are not repeated here. It should be noted that the functions described by each module (submodule, unit, or component, etc.) in the terminal device 400 of the application embodiment may be implemented by different modules (submodule, unit, or component, etc.), or may be implemented by the same module Module (submodule, unit or component, etc.) implementation.

FIG. 9 is a schematic block diagram of a network device 500 according to an embodiment of the present application. The network device 500 may include:

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

Activate the second configuration information of TCI state switching by MAC CE;

a first reference signal;

the resource identifier of the first reference signal;

Period of the first reference signal.

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

TCI status indication for terminal equipment-specific PDCCH MAC CEs.

a first reference signal;

Period of the first reference signal.

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

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

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

The network device 500 in this embodiment of the present application can implement the corresponding functions of the network device in the foregoing method embodiments. For the corresponding processes, functions, implementations, and beneficial effects of each module (submodule, unit, or component, etc.) in the network device 500, reference may be made to the corresponding descriptions in the foregoing method embodiments, which will not be repeated here. It should be noted that the functions described by each module (submodule, unit, or component, etc.) in the network device 500 of the application embodiment may be implemented by different modules (submodule, unit, or component, etc.), or may be implemented by the same module Module (submodule, unit or component, etc.) implementation.

FIG. 11 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so that the communication device 600 implements the methods in the embodiments of the present application. For example, the processor 610 may be used to perform the relevant functions of the processing unit 420 of the above-mentioned embodiments.

Optionally, the communication device 600 may also include a memory 620 . The processor 610 may call and run a computer program from the memory 620, so that the communication device 600 implements the methods in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610 , or may be integrated in 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, specifically, 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 the reporting unit 430 in the above embodiments.

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 600 may be the network device of this embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.

Optionally, the communication device 600 may be a terminal device in this embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the terminal device in each method in the embodiment of the present application, which is not repeated here for brevity.

FIG. 12 is a schematic structural diagram of a chip 700 according to an embodiment of the present application. The chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiments of the present application.

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

The memory 720 may be a separate device independent of the processor 710 , or may be integrated in the processor 710 .

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

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

Optionally, the chip 700 can be applied to the network device in the embodiments of the present application, and the chip 700 can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application, which is not repeated here for brevity.

Optionally, the chip 700 can be applied to the terminal device in the embodiments of the present application, and the chip 700 can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application, and for the sake of brevity, details are not repeated here.

Chips applied to network equipment and terminal equipment can be the same chip or different chips.

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

The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (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 or the like.

The memory mentioned above may be either volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM).

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, 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) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

FIG. 13 is a schematic block diagram of a communication system 800 according to 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, and the configuration information for activating TCI state switching is also used to instruct the terminal device to perform fast adjustment based on the first reference signal, and the terminal device 810 The TCI state switching is performed based on the configuration information for activating the 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 used to instruct the terminal device to perform fast adjustment based on the first reference signal.

The terminal device 810 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 820 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored on or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted over a wire from a website site, computer, server or data center (eg coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) means to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc., that contains one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a Solid State Disk (SSD)), and the like.

It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

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

Claims

A method for state switching, comprising:

The terminal device receives configuration information for activating the transmission configuration to indicate TCI state switching, and 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 method of claim 1, wherein the fast adjustment 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.
The method of claim 1 or 2, wherein the period of the first reference signal is smaller than a time threshold and/or belongs to a period included in the set of fast adjustment periods.
The method according to claim 1 or 2, 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 fast adjustment period Periods included in the collection.
The method according to any one of claims 1 to 4, wherein the configuration information for activating TCI state switching is at least one of the following:

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

Activate the second configuration information of TCI state switching through the medium access control-control element MAC CE;

The third configuration information of TCI state switching is activated through downlink control information DCI.
The method according to claim 5, wherein the first configuration information includes at least one of the following:

a first reference signal;

the resource identifier of the first reference signal;

Period of the first reference signal.
The method according to claim 6, wherein the first reference signal is a tracking reference signal TRS, and a resource identifier of the first reference signal is a TRS resource identifier.
The method according to claim 6, wherein the first reference signal is 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 fast Adjust the cycles included in the cycle collection.
The method according to claim 5, wherein the second configuration information is at least one of the following:

TCI state activation/deactivation for the physical downlink shared channel PDSCH MAC CE dedicated to terminal equipment;

TCI status indication for the physical downlink control channel PDCCH MAC CE dedicated to the terminal equipment.
The method according to claim 9, wherein an extension bit is included in the terminal device-specific PDSCH MAC CE or the terminal device-specific PDCCH MAC CE, and the extension bit is used to indicate the first reference signal.
The method according to claim 9, wherein at least one TCI status identifier in the terminal equipment-specific PDSCH MAC CE or the terminal equipment-specific PDCCH MAC CE is used to indicate the first reference signal.
The method according to claim 5, wherein the third configuration information includes at least one of the following:

a first reference signal;

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

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

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

When the first delay is smaller than the second delay, the TCI state switching is performed based on the period of the first reference signal and the processing delay.
14. The method of claim 13, wherein the period of the first reference signal is smaller than the period of the second reference signal.
The method according to claim 13 or 14, wherein determining the first delay of the TCI state switching based on the first reference signal comprises:

In the case where 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.
The method according to claim 13 or 14, 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 L1-RSRP measurement time of the first layer reference signal received power, the period of the first reference signal, and the processing delay.
The method of claim 14 or 15, wherein the method further comprises:

After receiving and processing the activation signaling and the interval of the first delay, the terminal device adopts the target TCI state to receive the PDCCH.
17. The method of any one of claims 13 to 17, wherein the terminal device is not required to receive or transmit data within the first delay.
The method of any one of claims 1 to 18, wherein the method further comprises:

The terminal device reports the capability of supporting rapid adjustment of TCI state switching and/or a request for rapid adjustment of TCI state switching.
The method of any one of claims 1 to 19, wherein the method further comprises:

The terminal device receives the TCI state indicated by the network device for downlink transmission.
A method for state switching, comprising:

The network device sends configuration information for activating the transmission configuration to indicate TCI state switching, and 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 method of claim 21, wherein the fast adjustment 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.
The method of claim 21 or 22, wherein the period of the first reference signal is smaller than a time threshold and/or belongs to a period included in the set of fast adjustment periods.
The method according to claim 21 or 22, wherein the period of the first reference signal is a specified SSB period, which is smaller than a time threshold and/or belongs to a period included in the set of fast adjustment periods.
The method according to any one of claims 21 to 24, wherein the configuration information for activating TCI state switching is at least one of the following:

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

Activate the second configuration information of TCI state switching by MAC CE;

The third configuration information of TCI state switching is activated through DCI.
The method according to claim 25, wherein the first configuration information includes at least one of the following:

a first reference signal;

the resource identifier of the first reference signal;

Period of the first reference signal.
The method according to claim 26, wherein the first reference signal is a tracking reference signal TRS, and a resource identifier of the first reference signal is a TRS resource identifier.
The method according to claim 26, 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 set of fast adjustment periods included in cycle.
The method of claim 25, wherein the second configuration information is at least one of the following:

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

TCI status indication for terminal equipment-specific PDCCH MAC CEs.
The method according to claim 29, wherein an extension bit is included in the terminal device-specific PDSCH MAC CE or the terminal device-specific PDCCH MAC CE, and the extension bit is used to indicate the first reference signal.
The method according to claim 29, wherein at least one TCI status identifier in the terminal equipment-specific PDSCH MAC CE or the terminal equipment-specific PDCCH MAC CE is used to indicate the first reference signal.
The method according to claim 25, wherein the third configuration information includes at least one of the following:

a first reference signal;

Period of the first reference signal.
The method according to any one of claims 21 to 32, wherein a period of the first reference signal is smaller than a period of a second reference signal, and the second reference signal is CSI-RS or SSB.
The method of any one of claims 21 to 33, 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.
The method of any one of claims 21 to 34, wherein the method further comprises:

The network device sends the TCI status indicated for downlink transmission to the terminal device.
A terminal device including:

a receiving unit, configured to receive configuration information for activating the 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;

and a processing unit, configured to perform the TCI state switch based on the configuration information for activating the TCI state switch.
The terminal device of claim 36, wherein the fast adjustment 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.
The terminal device according to claim 36 or 37, wherein the period of the first reference signal is smaller than a time threshold and/or belongs to a period included in the set of fast adjustment periods.
The terminal device according to claim 36 or 37, 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 set of fast adjustment periods.
The terminal device according to any one of claims 36 to 39, wherein the configuration information for activating TCI state switching is at least one of the following:

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

Activate the second configuration information of TCI state switching by MAC CE;

The third configuration information of TCI state switching is activated through DCI.
The terminal device according to claim 40, wherein the first configuration information includes at least one of the following:

a first reference signal;

the resource identifier of the first reference signal;

Period of the first reference signal.
The terminal device according to claim 41, wherein the first reference signal is a tracking reference signal TRS, and a resource identifier of the first reference signal is a TRS resource identifier.
The terminal device according to claim 41, 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 set of fast adjustment periods including cycle.
The terminal device according to claim 40, wherein the second configuration information is at least one of the following:

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

TCI status indication for terminal equipment-specific PDCCH MAC CEs.
The terminal device according to claim 44, wherein an extension bit is included in the terminal device-specific PDSCH MAC CE or the terminal device-specific PDCCH MAC CE, and the extension bit is used to indicate the first reference signal.
The terminal device according to claim 44, wherein at least one TCI status 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.
The terminal device according to claim 40, wherein the third configuration information includes at least one of the following:

a first reference signal;

Period of the first reference signal.
The terminal device according to any one of claims 36 to 47, wherein the processing unit is further configured to:

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

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

When the first delay is smaller than the second delay, the TCI state switching is performed based on the period of the first reference signal and the processing delay.
The terminal device of claim 48, wherein a period of the first reference signal is smaller than a period of the second reference signal.
The terminal device according to claim 48 or 49, wherein the processing unit is configured to determine the first delay of the TCI state switching based on the first reference signal, comprising: when the target TCI state is known Next, the terminal device determines the first delay based on the period and processing delay of the first reference signal.
The terminal device according to claim 48 or 49, wherein the processing unit is configured to determine the first delay of the TCI state switching based on the first reference signal, comprising: in the case that 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.
The terminal device according to claim 49 or 50, wherein the receiving unit is further configured to use the target TCI state to receive the PDCCH after receiving and processing the activation signaling and then interval the first delay.
52. The terminal device of any one of claims 48 to 52, wherein the terminal device is not required to receive or transmit data within the first delay.
The terminal device according to any one of claims 36 to 53, wherein the terminal device further comprises:

A reporting unit, configured to report the capability of supporting rapid adjustment of TCI state switching and/or a request for rapid adjustment of TCI state switching.
The terminal device according to any one of claims 36 to 54, wherein the receiving unit is further configured to receive a TCI state indicated by the network device for downlink transmission.
A network device comprising:

A sending unit, configured to send configuration information for activating the 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.
The network device of claim 56, wherein the fast adjustment 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.
The network device of claim 56 or 57, wherein the period of the first reference signal is smaller than a time threshold and/or belongs to a period included in the set of fast adjustment periods.
The network device according to claim 56 or 57, 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 the set of fast adjustment periods.
The network device according to any one of claims 56 to 59, wherein the configuration information for activating TCI state switching is at least one of the following:

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

Activate the second configuration information of TCI state switching by MAC CE;

The third configuration information of TCI state switching is activated through DCI.
The network device according to claim 60, wherein the first configuration information includes at least one of the following:

a first reference signal;

the resource identifier of the first reference signal;

Period of the first reference signal.
The network device according to claim 61, wherein the first reference signal is a tracking reference signal TRS, and a resource identifier of the first reference signal is a TRS resource identifier.
The network device according to claim 61, wherein the first reference signal is CSI-RS or SSB, and the period corresponding to the resource identifier of the first reference signal is smaller than a time threshold and/or belongs to a set of fast adjustment periods including cycle.
The network device according to claim 60, wherein the second configuration information is at least one of the following:

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

TCI status indication for terminal equipment-specific PDCCH MAC CEs.
The network device according to claim 64, wherein an extension bit is included in the terminal device-specific PDSCH MAC CE or the terminal device-specific PDCCH MAC CE, and the extension bit is used to indicate the first reference signal.
The network device according to claim 64, wherein at least one TCI status 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.
The network device according to claim 60, wherein the third configuration information includes at least one of the following:

a first reference signal;

Period of the first reference signal.
The network device according to any one of claims 56 to 67, wherein a period of the first reference signal is smaller than a period of a second reference signal, and the second reference signal is CSI-RS or SSB.
The network device according to any one of claims 56 to 68, wherein the network device further comprises:

A receiving unit, configured to receive a 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.
The network device according to any one of claims 56 to 69, wherein the sending unit is further configured to send the TCI status indicated for downlink transmission to the terminal device.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the execution of claims 1 to 20 The method of any of the above.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the network device executes the performance as claimed in claims 21 to 35 The method of any of the above.
A chip, comprising: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed executes the method according to any one of claims 1 to 20.
A chip, comprising: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed executes the method as claimed in any one of claims 21 to 35.
A computer-readable storage medium for storing a computer program which, when executed by a device, causes the device to perform the method of any one of claims 1 to 20.
A computer-readable storage medium for storing a computer program which, when executed by a device, causes the device to perform the method of any one of claims 21 to 35.
A computer program product comprising computer program instructions that cause a computer to perform the method of any of claims 1 to 20.
A computer program product comprising computer program instructions that cause a computer to perform the method of any one of claims 21 to 35.
A computer program that causes a computer to perform the method of any one of claims 1 to 20.
A computer program that causes a computer to perform the method of any one of claims 21 to 35.