State switching method, terminal device and network device

Abstract

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

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a state switching method, a terminal device, and a network device. Background Art

[0002] During the TCI state switching process, if the activation signaling of the TCI state switching is processed, it is necessary to receive a reference signal such as a synchronization channel / physical broadcast channel block (SS / PBCH Block, SSB) to adjust the corresponding QCL information. If the 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 a large waste of time (latency) and throughput loss. Summary of the invention

[0003] The embodiments of the present application provide a state switching method, terminal device and network device, which can reduce time waste.

[0004] The present application provides a method for state switching, including:

[0005] The terminal device receives configuration information for activating a transmission configuration indication TCI state switching, where the configuration information for activating the TCI state switching is also used to instruct the terminal device to perform a fast adjustment based on the first reference signal;

[0006] The terminal device performs the TCI state switching based on the configuration information for activating the TCI state switching.

[0007] The present application provides a method for state switching, including:

[0008] The network device sends configuration information for activating a transmission configuration indication TCI state switch, and the configuration information for activating the TCI state switch is also used to instruct the terminal device to perform a rapid adjustment based on the first reference signal.

[0009] The present application provides a terminal device, including:

[0010] A receiving unit, configured to receive configuration information for activating a transmission configuration indication TCI state switching, where the configuration information for activating the TCI state switching is also used to instruct the terminal device to perform a fast adjustment based on the first reference signal;

[0011] A processing unit is used to perform the TCI state switching based on the configuration information for activating the TCI state switching.

[0012] The present application provides a network device, including:

[0013] A sending unit is used to send configuration information for activating a transmission configuration indication TCI state switch, where the configuration information for activating the TCI state switch is also used to instruct the terminal device to perform a rapid adjustment based on the first reference signal.

[0014] The embodiment of the present application provides a terminal device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the above-mentioned state switching method.

[0015] The embodiment of the present application provides a network device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device executes the above-mentioned state switching method.

[0016] An embodiment of the present application provides a chip for implementing the above-mentioned state switching method.

[0017] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned state switching method.

[0018] An embodiment of the present application provides a computer-readable storage medium for storing a computer program, which enables a device to perform the above-mentioned state switching method when the computer program is executed by the device.

[0019] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned state switching method.

[0020] An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned state switching method.

[0021] In an embodiment of the present application, configuration information for activating TCI state switching instructs the terminal device to make rapid adjustments based on the first reference signal, thereby reducing time waste and improving throughput. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of an application scenario according to an embodiment of the present application.

[0023] Figure 2 This is a schematic diagram of the TCI state configuration of PDSCH.

[0024] Figure 3 This is a schematic diagram of a TCI state switching scenario.

[0025] Figure 4 It is a schematic flowchart of a state switching method according to an embodiment of the present application.

[0026] Figure 5 is a schematic flowchart of a state switching method according to another embodiment of the present application.

[0027] Figure 6 It is a schematic diagram of the TCI status indication of the PDCCH MACCE dedicated to the UE.

[0028] Figure 7 It is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0029] Figure 8 It is a schematic block diagram of a terminal device according to another embodiment of the present application.

[0030] Fig. 9 is a schematic block diagram of a network device according to an embodiment of the present application.

[0031] Fig.10 is a schematic block diagram of a network device according to another embodiment of the present application.

[0032] Fig.11 It is a schematic block diagram of a communication device according to an embodiment of the present application.

[0033] Fig.12 is a schematic block diagram of a chip according to an embodiment of the present application.

[0034] Fig.13 It is a schematic block diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0036] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0037] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type 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.

[0038] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0039] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0040] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0041] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0042] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0043] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial eontrol), a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city (smart city) or a wireless terminal device in a smart home (smart home), etc.

[0044] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, 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 clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0045] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0046] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, 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 satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0047] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cell, micro cell, pico 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.

[0048] Figure 1 A communication system 100 is exemplarily shown. The communication system includes a network device 110 and two terminal devices 120. Optionally, the communication system 100 may include multiple network devices 110, and each network device 110 may include other number of terminal devices 120 within its coverage area, which is not limited in the present embodiment.

[0049] Optionally, the communication system 100 may also include other network entities such as a mobility management entity (Mobility Management Entity, MME), an access and mobility management function (Access and Mobility Management Function, AMF), etc., which is not limited in the embodiments of the present application.

[0050] Among them, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment may be an evolutionary base station (evolutional node B, referred to as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), micro-micro base station, access point (AP), transmission point (TP) or new generation base station (new generation Node B, gNodeB) in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0051] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system shown as an example, the communication equipment may include network equipment and terminal equipment with communication functions. The network equipment and terminal equipment may be specific equipment in the embodiments of the present application and will not be repeated here. The communication equipment may also include other equipment in the communication system, such as network controllers, mobile management entities and other network entities, which are not limited to the embodiments of the present application.

[0052] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0053] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0054] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0055] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant 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, and they all belong to the protection scope of the embodiments of the present application.

[0056] 1. TCI-state: Quasi Co-Location (QCL) indication for downlink transmission

[0057] When receiving signals, the terminal can improve the reception performance by using the characteristics of the transmission environment corresponding to the data transmission to improve the reception algorithm. For example, the statistical characteristics of the channel can be used to optimize the design and parameters of the channel estimator. In the NR system, these characteristics corresponding to the data transmission are represented by the quasi-co-location state (QCL-Info).

[0058] If the downlink transmission comes from different transmission receiving nodes (TRPs), panels or beams, the characteristics of the transmission environment corresponding to the data transmission may also change. Therefore, in the NR system, when the network side transmits the downlink control channel or data channel, the corresponding QCL status information can be indicated to the terminal through the TCI status.

[0059] For example, a TCI state may contain the following configuration:

[0060] TCI state identifier (identifier, ID), used to identify a TCI state;

[0061] QCL information 1;

[0062] QCL information 2 (this information is optional).

[0063] Among them, a QCL information can include the following information:

[0064] The QCL type configuration, for example, may be one of QCL typeA, QCL typeB, QCL typeC, or QCL typeD;

[0065] The QCL reference signal configuration includes the cell ID where the reference signal is located, the bandwidth part (Bandwidth Part, BWP) ID and the reference signal identifier (for example, it can be a channel state information-reference signal (Channel State Information-Reference Signal, CSI-RS) resource ID or SSB index).

[0066] Among them, if QCL information 1 and QCL information 2 are both 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.

[0067] Exemplarily, the meanings of different QCL type configurations are as follows:

[0068] 'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread}

[0069] 'QCL-TypeB': {Doppler shift, Doppler spread}

[0070] 'QCL-TypeC': {Doppler shift, average delay}

[0071] 'QCL-TypeD': {Spatial Rx parameter}

[0072] Exemplarily, the configurations of the TCI state and the QCL quasi co-location state are as follows:

[0073]

[0074] In the NR system, the network side can indicate the corresponding TCI state for the downlink signal or downlink channel. If the network side configures the QCL reference signal of the target downlink channel or the target downlink signal as a reference SSB or a reference CSI-RS resource through the TCI state, and the QCL type is configured as typeA, typeB or typeC, the terminal can assume that the large-scale parameters of the target downlink signal or the target downlink channel (such as SSB or CSI-RS resource) are the same, which can be determined by the QCL type configuration.

[0075] Similarly, if the network side configures the QCL reference signal of the target downlink channel or target downlink signal as a reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as typeD, the terminal can use the same receiving beam (ie, Spatial Rx parameter) as that for receiving the reference SSB or reference CSI-RS resource to receive the target downlink signal. Typically, the target downlink channel (or target downlink signal) and its reference SSB or reference CSI-RS resource are sent by the same TRP, the same panel, or the same beam on the network side. If the transmission TRP, transmission panel, or transmission beam of two downlink signals or downlink channels is different, different TCI states are usually configured.

[0076] For downlink control channels such as physical downlink control channels (PDCCH), the TCI status of the corresponding control resource set (CORESET) can be indicated by radio resource control (RRC) signaling or RRC signaling + media access control (MAC) signaling.

[0077] For downlink data channels such as the Physical Downlink Shared Channel (PDSCH), the available TCI state set can be indicated by RRC signaling, and some TCI states in the set can be activated by MAC layer signaling. Finally, the TCI state indication field in the downlink control information (DCI) indicates one or two TCI states from the activated TCI states for the PDSCH scheduled by the DCI. The case of two TCI states is mainly for scenarios similar to multiple TRPs. For example, see Figure 2 , indicating the available TCI state set through RRC signaling, which may include N candidate TCI states. Activating K TCI states among the N candidate TCI states through MAC signaling. Indicating 1 or 2 used TCI states from the K activated TCI states through the TCI state indication field in the DCI.

[0078] 2. Description of TCI status: known and unknown

[0079] The TCI state is known if the following conditions are met:

[0080] (1) During the period from the last transmission of the RS resource used for the L1-RSRP measurement reportingfor 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.

[0081] (2) A TCI state switch command is received within 1280 ms upon the last transmission of the RS resource for beam reporting or measurement.

[0082] (3) The UE has sent at least 1 L1-RSRP report for the target TCI state before the TCIstate switch command.

[0083] (4) The TCI state remains detectable during the TCI state switching period.

[0084] (5) The SSB associated with the TCI state remain detectable during the TCI switching period.

[0085] (6) SNR of the TCI state ≥ -3dB.

[0086] Otherwise, the TCI state is unknown.

[0087] 3. The court requires:

[0088] For example, the following three activation configuration modes are supported for TCI-state switching, corresponding to different requirements.

[0089] TCI state switching delay based on MAC-CE;

[0090] TCI state switching delay based on RRC;

[0091] TCI state switching latency based on DCI.

[0092] Take MAC-CE activation as an example:

[0093] (1) Activation / Deactivation of UE-specific PDSCH TCI state

[0094] The network may activate and deactivate the configuredTCI 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 PDSCHare initially deactivated upon configuration and after a handover.

[0095] The MAC entity should: If the MAC entity receives TCI state activation / deactivation for UE-specific PDSCH MAC CE in the serving cell, indicate to the lower layer the information related to TCI state activation / deactivation for UE-specific PDSCH MAC CE.

[0096] (The MAC entity shall:

[0097] 1>if the MAC entity receives an TCI States Actiyation / Deactivation for UE-specific PDSCH MAC CE on a Serving Cell:

[0098] 2>indicate to lower 1ayers the information regarding the TCI StatesActivation / Deactivation for UE-specific PDSCH MAC CE.)

[0099] (2) Indication of TCI state for UE-specific PDCCH

[0100] The network may indicate a TCI state for PDCCH reception for a CORESET of a Serving Cell by sending the TCI State Indicationfor UE-specific PDCCH MAC CE.

[0101] The MAC entity should: if the MAC entity receives a TCI status indication of a PDCCH MAC CE dedicated to the UE in the serving cell, indicate to the lower layer the information related to the TCI status indication of the PDSCH MAC CE dedicated to the UE.

[0102] (The MAC entity shall:

[0103] 1>if the MAC entity receives a TCI State Indication for UE-specificPDCCH MAC CE on a Serving Cell:

[0104] 2>indicate to lower layers the information regarding the TCI StateIndication for UE-specific PDCCH MAC CE.)

[0105] Take the TCI state switching delay based on MAC-CE as an example:

[0106] If the target TCI state is known, until a PDSCH carrying a MAC-CE activation command is received in slot n, the UE shall adopt the target TCI state of the serving cell where the TCI state switch occurs. The first time slot after receiving PDCCH. And before, the UE can receive PDCCH using the old TCI state.

[0107] in,

[0108] T HARQis the time between downlink (DL) data transmission and confirmation (T HARQ is the timing between DL data transmission and acknowledgment as specified;);

[0109] T first-SSB It is the time when the UE transmits the SSB for the first time after decoding the MAC CE command; the SSB should be the time from QCL-TypeA or QCL-TypeC to the target TCI state (T first-SSB is time to first SSBtransmission after MAC CE command is decoded by the UE; The SSB shall be theQCL-TypeA or QCL-TypeC to target TCI state;);

[0110] T SSB-proc =2ms;

[0111] If the target TCI state is not in the active TCI state list for PDSCH, TOk=1, otherwise TOk=0 (TOk k =1 if target TCI state is not in the active TCI state list for PDSCH, 0otherwise.).

[0112] If the target TCI state is unknown, until a PDSCH message carrying a MAC-CE activation command is received in slot n, the UE may adopt the target TCI state of the serving cell where the TCI state switch is currently occurring. The first slot after receiving PDCCH. Before and after, the UE can receive PDCCH using the old TCI state.

[0113] in,

[0114] In FR1, or when TCI state switching does not involve QCL-TypeD in FR2, T L1-RSRP =0(-T L1-RSRP=0in FR1 or when the TCI state switching not involving QCL-TypeD in FR2.).

[0115] Otherwise, T L1-RSRP is the time for receiving beam (Rxbeam) refinement in FR2, specifically (Otherwise, T L1-RSRP is the time for Rx beam refinement in FR2, defined as):

[0116] T for SSB Li-RSPR_Measurement_Period_SSB (T Li-RSPR_Measurement_Period_SSB for SSB), assuming M = 1 and T Report =0(with the assumption of M=1,with T Report =0):

[0117] For CSI-RS T L1-RSRP_Measurement_Period_CSI-RS (T L1-RSRP_Measurement_Period_CSI-RS for CSI-RS):

[0118] configured with higher layer parameter repetition set to ON;

[0119] With the assumpuon of M=1 for periodic CSI-RS;

[0120] For aperiodic CSI-RS, if number of resources in resource set at least equal toMaxNumberRxBeam;

[0121] T Report =0(with T Report =0).

[0122] When TCI state switching involves QCL-Type D, for L1-RSRP measurement based on CSI-RS, TO uk =1; and for SSB-based L1-RSRP measurement, TO uk =0(TO uk=1 for CSI-RS based L1-RSRP measurement, and 0 for SSB based L1-RSRP measurement when TCI state switching involvesQCL-TypeD);

[0123] When TCI state switching involves only other QCL types, TO uk =1(TO uk =1 when TCI stateswitching involves other QCL types only);

[0124] T first-SSB is the time from L1-RSRP measurement to the first SSB transmission when TCI state switching involves QCL-TypeD (T first-SSB istime to first SSB transmission after L1-RSRP measurementwhen TCI state switching involves QCL-TypeD;);

[0125] Tfirst-SSB is the time from when the UE decodes the MAC CE command to the first SSB transmission for other QCL types (T first-SSB is time to first SSB transmission after MAC CE command is decoded by the UE for other QCL types;);

[0126] In the target TCI state, the SSB shall be the QCL-TypeA or QCL-TypeC (The SSB shall be the QCL-TypeA or QCL-TypeC to target TCI state.).

[0127] In the embodiment of the present application, the frequency range of 5GNR can be divided into different FRs: FR1 and FR2. The frequency range FR1 can be the 5G Sub-6 GHz (below 6 GHz) frequency band, and the frequency range FR2 can be the 5G millimeter wave frequency band.

[0128] See also Figure 3 In one scenario, in the TCI switching request, there is a switch from "slotn+T HARQ+(3ms) / NR slotlength" to "slot n+T HARQ +(3ms+TOk*(T first-SSB +T SSB proc )) / NR slot length". Since the UE does not require DL data during this time gap, if the first SSB arrives after 160ms, it may affect the throughput performance. Furthermore, in T first-SSB During the time interval of , it is necessary to discuss 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.

[0129] Should Figure 3 The working scope may include TCI handover enhancement [RAN4, RAN1]:

[0130] Enhanced feasibility work is performed to maintain UE reception and transmission during the period (or partial period) of MAC CE based TCI switching.

[0131] Work to maintain enhanced feasibility of UE reception and transmission during a period (or partial period) of RRC-based TCI switching.

[0132] Currently, MAC CE or RRC activates TCI state switching, and the UE uses the old TCI state to receive PDCCH until After the UE receives and processes the activation signaling, it still needs to wait for a period of time (expressed by gap1), namely: The first slot after that can start to use the new TCI state to receive PDCCH or PDSCH. Slot n represents the time slot in which the PDSCH carrying the MAC-CE or RRC activation command is received. HARQ Indicates the time between downlink (DL) data transmission and confirmation. Indicates the slot length, which is related to the subcarrier spacing.

[0133] The reason for this time gap GAP1 is that it is necessary to receive a reference signal such as SSB to adjust the corresponding QCL information. For example, the power, beam direction or timing of the reference signal may be adjusted, which can be implemented by the UE. The length of the time gap GAP1 depends on the period and time offset of the reference signal such as SSB.

[0134] like Figure 3 As shown, if the activation signaling processing is completed If a reference signal SSB is missed and the SSB period is 160ms, the UE needs to wait for 160ms of gap1 and cannot receive and send data, thus causing a great waste of time (1atency) and throughput loss.

[0135] The embodiments of the present application can provide several methods to improve the efficiency of TCI state activation and use, reduce the interruption gap caused by TCI state switching, and ensure that the UE quickly completes the TCI state switching and starts transmission, thereby reducing time waste and throughput loss.

[0136] Figure 4 is a schematic flow chart of a method 200 for state switching according to an embodiment of the present application. The method may optionally be applied to Figure 1 The system shown in the figure is not limited thereto. The method includes at least part of the following contents.

[0137] S210. The terminal device receives configuration information for activating a transmission configuration indication (TCI) state switch, where the configuration information for activating the TCI state switch is also used to instruct the terminal device to perform a fast adjustment based on a first reference signal.

[0138] S220. The terminal device performs the TCI state switching based on the configuration information for activating the TCI state switching.

[0139] Exemplarily, the configuration information for activating TCI state switching may include information for activating the first reference signal.

[0140] Optionally, performing 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.

[0141] Exemplarily, the rapid adjustment based on the first reference signal may include a timing adjustment based on a first reference signal (one short timing adjustment). In addition, the rapid adjustment based on the first reference signal may also include an adjustment of QCL information such as a beam direction and a reference signal power based on a 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, a time gap (gap) in which data cannot be received and sent may pass. The time gap may be based on a period T of the first reference signal. period and processing delay T ProThe terminal device can complete the adjustment of the QCL information within the time interval, for example, adjusting the power, beam direction or timing of the reference signal.

[0142] Exemplarily, the fast adjustment based on the first reference signal may also include at least one of timing adjustment, beam direction adjustment, and reference signal power adjustment based on multiple first reference signals. If the terminal device is not capable of supporting 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 processes the activation signaling, the time gap during which it cannot receive and send data may be based on multiple cycles T of the first reference signal. period and processing delay T Pro Wait for confirmation.

[0143] Optionally, a period of the first reference signal is smaller than a time threshold and / or belongs to a period included in a fast adjustment period set.

[0144] Exemplarily, a time threshold may be preset, such as 25 ms, and the period of the first reference signal may be configured as a short period by using the time threshold.

[0145] Exemplarily, a fast adjustment period set may be preset, and the fast adjustment period set may include multiple periods, such as short periods of 5 ms, 10 ms, 20 ms, etc. The period of the first reference signal may also be configured as a short period using the fast adjustment period set.

[0146] Optionally, 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 a fast adjustment period set.

[0147] Exemplarily, the SSB period may be 5ms, 10ms, 20ms, 40ms, 80ms, or 160ms. If the time threshold is 50ms, the specified SSB period may be 5ms, 10ms, 20ms, or 40ms. If the SSB periods included in the fast adjustment period set include 5ms, 10ms, and 20ms, the specified SSB period may be 5ms, 10ms, or 20ms.

[0148] Optionally, the configuration information for activating TCI state switching is at least one of the following:

[0149] First configuration information for activating TCI state switching through RRC;

[0150] Activate second configuration information of TCI state switching through MAC CE;

[0151] The third configuration information for activating TCI state switching through DCI.

[0152] Optionally, if TCI state switching is activated by RRC, the first configuration information includes at least one of the following:

[0153] a first reference signal;

[0154] A resource identifier of the first reference signal;

[0155] The period of the first reference signal.

[0156] Exemplarily, the first configuration information can be carried by RRC signaling, and a reference signal for rapid adjustment, i.e., the first reference signal, can be activated while activating the TCI state switching by RRC signaling. The reference signal for rapid adjustment can be a newly added reference signal such as a tracking reference signal (TRS), or a reference signal with a limited short period such as CSI. - RS or SSB.

[0157] 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. Exemplarily, the period of TRS is generally short. If a new TRS is added while sending an activation command, the period and processing delay of TRS can be used to make rapid adjustments (such as obtaining timing, etc.) based on the first reference signal.

[0158] Optionally, the first reference signal is a CSI-RS or SSB, and the period corresponding to the resource identifier of the first reference signal is less than the time threshold and / or belongs to the period included in the fast adjustment period set. Exemplarily, the period of CSI-RS or SSB can be limited by the time threshold and / or the fast adjustment period set, so that the period of CSI-RS or SSB is shorter and meets the characteristics of the fast adjustment period. For example, the period of CSI-RS or SSB is 5ms, 10ms and 20ms.

[0159] Optionally, if TCI state switching is activated through MAC CE, the second configuration information is at least one of the following:

[0160] TCI state activation (Activation) / deactivation (Deactivation) of PDSCH MAC CE dedicated to the terminal device.

[0161] TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

[0162] Exemplarily, the second configuration information may be carried through MAC CE signaling, and while activating TCI state switching through MAC CE signaling, a reference signal for fast adjustment, namely, the first reference signal, is activated.

[0163] Optionally, TCI state switching can be activated through RRC and MAC CE.

[0164] Exemplarily, a reference signal for rapid adjustment, that is, a first reference signal, is marked in the TCI state activated by RRC signaling, and a rapid TCI state switching based on the first reference signal is triggered through MAC CE signaling.

[0165] Optionally, the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device includes an extension bit, and the extension bit is used to indicate the first reference signal.

[0166] Exemplarily, an extension bit may be added after the TCI state identifier, and 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.

[0167] Optionally, at least one TCI state identifier in the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device is used to indicate the first reference signal.

[0168] Exemplarily, the original TCI state identifier may also be modified so that the original TCI state identifier may correspond to the first reference signal.

[0169] Optionally, if TCI state switching is activated through DCI, the third configuration information includes at least one of the following:

[0170] a first reference signal;

[0171] The period of the first reference signal.

[0172] Exemplarily, the first configuration information may be carried through DCI, and while activating TCI state switching through DCI, a reference signal for rapid adjustment, namely, the first reference signal, is activated.

[0173] Optionally, the terminal device performs the TCI state switching based on the configuration information for activating the TCI state switching, including:

[0174] Determine a first delay of the TCI state switching based on the first reference signal;

[0175] Determine a second delay of the TCI state switching based on a second reference signal, where the second reference signal is a CSI-RS or an SSB;

[0176] When the first delay is less than the second delay, the TCI state switching is performed based on the period and processing delay of the first reference signal.

[0177] Exemplarily, after the terminal device receives the configuration information for activating the TCI state switching, the first delay, i.e., the time gap gap1, can be determined based on the first reference information for rapid 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, i.e., the time gap gap2, can be determined based on the period and processing delay of the CSI-RS or SSB. If gap1 is smaller than gap2, it means that the time during which the terminal device does not receive or send data can be shortened, and the TCI state switching can be performed based on the period and processing delay of the first reference signal. If gap1 is not smaller than gap2, the reference information does not need to be changed, and the TCI state switching can continue to be performed based on the period and processing delay of the second reference signal.

[0178] Optionally, a period of the first reference signal is smaller than a period of the second reference signal.

[0179] Optionally, determining the first delay of the TCI state switching based on the first reference signal includes: when the target TCI state is known, the terminal device determines the first delay based on the period and processing delay of the first reference signal.

[0180] Exemplarily, the TCI state before switching can be referred to as the old TCI state, and the TCI state after switching can be referred to as the new TCI state or the target TCI state. If the target TCI state is known, the terminal device does not need to perform the first layer reference signal received power (L1-RSRP) measurement, and can directly determine the first delay based on the period and processing delay of the first reference signal. For example, the period of the first reference signal RS1 is T first-RS1 , the processing delay is T RS1-proc , the total first delay is (T first-RS1 +T RS1-proc ).

[0181] 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 determines the first delay based on the L1-RSRP measurement time, the period of the first reference signal and the processing delay.

[0182] If the target TCI state is unknown, the terminal device needs to perform a layer 1 reference signal received power (L1-RSRP) measurement, and therefore needs to directly determine the first delay based on the L1-RSRP measurement time, the period of the first reference signal, and the processing delay. For example, the period T of the first reference signal RS1 is first-RS1 and processing delay and T RS1-proc , the total first delay is T L1 - RSRP +TO uk *(T first-RS1 +T RS1-proc ). Where T L1-RSRP is the L1-RSRP measurement time, TO uk The value is determined based on the QCL type and the reference signal type. For example, when the quasi-co-location type of TCI state switching is QCL-TypeD, TO uk =1; otherwise, TO uk =0.

[0183] Optionally, the method further comprises:

[0184] After receiving and processing the activation signaling and then interval the first delay, the terminal device adopts the target TCI state to receive the PDCCH.

[0185] Exemplarily, after the terminal device receives and processes the activation signaling of the MAC CE or the RRC activation signaling, after a first delay and completing the rapid adjustment of the QCL information, the PDCCH can be received using the switched target TCI state.

[0186] Optionally, the terminal device is not required to receive or send data during the first delay.

[0187] Optionally, the method further comprises:

[0188] The terminal device reports the capability of supporting rapid adjustment of TCI state switching and / or makes a request for rapid adjustment of TCI state switching.

[0189] For example, some terminal devices can determine that they have the ability to support rapid adjustment of TCI state switching. Such terminal devices can first report to the network device their ability to support rapid adjustment of TCI state switching and / or a request for rapid adjustment of TCI state switching. After receiving the ability and / or request, the network device sends configuration information for activating TCI state switching to the terminal device.

[0190] Optionally, the method further comprises:

[0191] The terminal device receives the TCI status indicated by the network device for downlink transmission.

[0192] Exemplarily, the network device may first indicate to the terminal device the TCI state of the downlink signal or downlink channel, and then send to the terminal device the configuration information for activating the TCI state switching. In other words, the terminal device may first receive the TCI state indicated by the network device for the downlink signal or downlink channel, and then receive the configuration information for activating the TCI state switching from the network device.

[0193] Figure 5 is a schematic flow chart of a method 300 for state switching according to an embodiment of the present application. The method may optionally be applied to Figure 1 The system shown in the figure is not limited thereto. The method includes at least part of the following contents.

[0194] S310. The network device sends configuration information for activating a transmission configuration indication TCI state switch, where the configuration information for activating the TCI state switch is also used to instruct the terminal device to perform a rapid adjustment based on a first reference signal.

[0195] 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.

[0196] Optionally, a period of the first reference signal is smaller than a time threshold and / or belongs to a period included in a fast adjustment period set.

[0197] Optionally, 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 a fast adjustment period set.

[0198] Optionally, the configuration information for activating TCI state switching is at least one of the following:

[0199] First configuration information for activating TCI state switching through RRC;

[0200] Activate second configuration information of TCI state switching through MAC CE;

[0201] The third configuration information for activating TCI state switching through DCI.

[0202] Optionally, the first configuration information includes at least one of the following:

[0203] a first reference signal;

[0204] A resource identifier of the first reference signal;

[0205] The period of the first reference signal.

[0206] 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.

[0207] Optionally, the first reference signal is a CSI-RS or an SSB, and a period corresponding to a resource identifier of the first reference signal is less than a time threshold and / or belongs to a period included in a fast adjustment period set.

[0208] Optionally, the second configuration information is at least one of the following:

[0209] Activate / deactivate TCI state for PDSCH MAC CE dedicated to terminal devices.

[0210] TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

[0211] Optionally, the PDSCH MAC CE dedicated to the terminal device includes an extension bit, and the extension bit is used to indicate the first reference signal.

[0212] 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.

[0213] Optionally, the third configuration information includes at least one of the following:

[0214] a first reference signal;

[0215] The period of the first reference signal.

[0216] Optionally, 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.

[0217] Optionally, the method further comprises:

[0218] 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.

[0219] Optionally, the method further comprises:

[0220] The network device sends a TCI status indicating downlink transmission to the terminal device.

[0221] For a specific example of the network device executing the method 300 of this embodiment, reference may be made to the related description about the network side or the network device such as the base station in the above method 200, which will not be described again for the sake of brevity.

[0222] In an exemplary scenario, the state switching method of the embodiment of the present application is a new method for supporting fast TCI state switching, which mainly includes the following contents:

[0223] The MAC-CE activation signaling design is enhanced to support fast configuration of reference signals;

[0224] The RRC activation signaling design is enhanced to support fast configuration of reference signals;

[0225] The activation signaling design of hybrid DCI is enhanced to support fast configuration of reference signals;

[0226] Design of a dedicated TCI status list for enhanced capability UEs.

[0227] 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 caused by TCI state switching; ensure that the UE quickly completes the TCI state switching and starts transmission, and reduce throughput loss.

[0228] Here are a few specific examples:

[0229] Example 1: Enhanced MAC-CE activation signaling design to support fast configuration of reference signals

[0230] S11. The network side may indicate a corresponding TCI state for a downlink signal or a downlink channel.

[0231] S12. When the network configures MAC-CE activated TCI state switching (TCI-state switehing), a new reference signal RS1 configuration may be activated at the same time for UE fast adjustment (one short timing adjustment). For example, the configuration of the new reference signal RS1 may instruct the UE to make a fast adjustment based on the RS1. The MAC-CE activated TCI state switching may be configured in at least one of the following ways:

[0232] TCI States Activation / Deactivation for UE-specific PDSCH MAC CE:

[0233] TCI State Indication for UE-specific PDCCH MAC CE.

[0234] For example, the configuration of activating a new reference signal RS1 is indicated by the TCI state identifier (TCI stateID) field of the above configuration method. Among them, the TCI state identifier field can represent the TCI state identified by 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 other values ​​higher than 0, this field represents the TCI state list (TCI-StateList) and TCI state PDCCH addition list (TCI-StatesPDCCH-ToAddList) and TCI state PDCCH deletion list (TCI-StatesPDCCH-ToReleaseList) configured by the TCI-StateId in the control resource set identified by the CORESET ID.The length of the TCI state identification field is 7 bits (TCI StateID: This field indicates the TCI state identified by TCI-StateId applicable to the Control Resource Set identified by CORESET ID field. If the field ofCORESET 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 CORESETID is set to the other value than 0, this field indicates a TCI-StateIdconfigured by tci-StatesPDCCH-ToAddList and tci-StatesPDCCH-ToReleaseList in the controlResourceSet identified by the indicated CORESET ID.The length of the field is 7 bits.).

[0235] For example, see Figure 6 In the TCI state indication of the UE-specific PDCCH MAC CE, a serving cell ID, a CORESET ID, a TCI state ID, etc. may be included. Specifically, the relevant configuration in the UE-specific PDCCH MAC CE may be improved and enhanced. For example,

[0236] Extension bit: Add a bit after the TCI state ID to indicate the RS1 configuration, or

[0237] Do not extend the bit: directly specify a dedicated TCI state ID (predefine a TCI state ID list bound specifically for RS1).

[0238] In the embodiment of the present application, the period of RS1 can be a short period (such as 5ms, 10ms, 20ms).

[0239] S13, UE receives and processes the activation signaling After a gap, the first reference signal (TO k *(T first-SSB +T SSB-proc ))After that, the UE can use the new TCI-state to receive PDCCH.

[0240] S14. The UE needs to meet the prescribed delay requirement when completing the handover process in the above step S13, and the UE is not required to receive or send data within the gap.

[0241] S14-1: For a target TCI state that is known, if the current target TCI state is in the active TCI state list for PDSCH, the TCI state switching delay requirement becomes shorter than the general requirement. For example, the time of gap1 is shorter than that of Figure 3 Compared with the situation shown in the previous T first-SSB and T SSB-proc becomes the period T of the new reference signal RS1 respectively. first-RS1 and processing delay and T RS1-proc , the total gap1 also becomes shorter, that is, (T first-RS1 +T RS1-proc ).

[0242] S14-2: For the target TCI state is unknown (unknown), if the current target TCI state is in the activeTCI state list for PDSCH, the TCI-state switch delay requirement becomes shorter than the existing protocol requirement. For example, the time of gap1 is shorter than Figure 3 Compared with the situation shown in the previous T first-SSB and T SSB-proc becomes the period T of the new reference signal RS1 first-RS1 and processing delay T RS1-proc , the total gap1 also becomes shorter, that is, T L1-RSRP +TO uk *(T first-RS1 +T RS1-proc ). Where T L1-RSRP andTO uk You can follow the instructions below.

[0243] When the TCI state switching of QCL-TypeD is not involved in FR1 or FR2, TL1-RSRP =0(T L1-RSRP =0 inFR1 or when the TCI state Switching not involving QCL-TypeD in FR2.).

[0244] otherwise:

[0245] T L1-RSRP is the receive beam refinement time in FR2, specifically (T L1-RSRP is the time for Rxbeamrefinement in FR2, defined as)

[0246] 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):

[0247] T L1-RSRP_Measurement_Period_CSI-RS , used for CSI-RS(T L1-RSRP_Measurement_Period_CSI-RS for CSI-RS, configured with higher layer parameter repetition set to ON, with the assumption of M=1for periodic CSI-RS. for aperiodic CSI-RS if number of resources in resource set atleast equal to MaxNumberRxBeam, and T Report =0(with T Report =0).

[0248] T L1-RSRP_Measurement_Period_RS1 , for RS1(T L1-RSRP_Measurement_Period_RS1 for RS1), configured with higher layer parameter repetition set to ON, assuming M = 1 for periodic RS1 (

[0249] with the assumption of M=1for periodic RS1). It can be used for periodic RS1 if number of resources in resource set at least equal to MaxNumberRxBeam, and Report =0(with T Report =0)

[0250] Optionally, the T of CSI-RS can be used L1-RSRP , even shorter T is defined for TRS L1-RSRP .

[0251] When TCI state switching involves QCL-TypeD, for RS1-based L1-RSRP measurement, TO uk =0, otherwise TO uk =1(TO uk =0 for RS1 based L1-RSRP measurement when TCI state Switchinginvolves QCL-TypeD, otherwise TO uk =1.).

[0252] T first-RS1 It can be the time from L1-RSRP measurement to the first RS1 transmission when TCI state switching involves QCL-TypeD (T first-RS1 is time to first RS1 transmission after L1-RSRPmeasurement when TCI state Switching involves QCL-TypeD;);

[0253] T first-RS1 When other QCL types are used, the time from when the UE decodes the MAC CE command to when the RS1 is first transmitted (T first-RS1 is time to first RS1 transmission after MAC CE command is decoded by the UE for other QCL types;);

[0254] T RS1-proc is the time to process RS1 (T RS1-proctime to process RS1.). Usually constant, or even shorter than 2ms.

[0255] For example, 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 SSB, the use of RS1 can significantly shorten the data transmission interruption of the current serving cell during TCI state switching, improve the switching efficiency, and reduce the throughput loss, especially the loss of PDCCH transmission rate.

[0256] Example 2: Activate RRC signaling design enhancement to support fast configuration of reference signals

[0257] S21. The network side may indicate a corresponding TCI state for a downlink signal or a downlink channel.

[0258] S22. When the network configures RRC-activated TCI-state switching, a new reference signal RS1 configuration is activated simultaneously for one short timing adjustment of the UE.

[0259] Specifically, the configuration of the enhanced TCI state (TCI-State) and the quasi co-location state (QCL-Info) is improved.

[0260] For example, a referenceSignal field is added to indicate the configuration of RS1, such as TRS and TRS-ResourceID.

[0261] For another example, modify referenceSignal: a segment of NZP-CSI-RS-ResourceId (non-zero power CSI-RS resource identifier) ​​specified for CSI-RS configuration, specifically corresponding to RS1 with a short period.

[0262] For example, the period of RS1 is a short period (such as 5ms, 10ms, 20ms)

[0263] The following is an example of configuration for improving the enhanced TCI state (TCI-State) and quasi co-location state (QCL-Info):

[0264]

[0265] After the UE receives and processes the activation signaling (for example, the time length after ), after a gap, the first reference signal is received and processed (for example, the time length after which is TO k *(T fiist-SSB +TssB-proc ))After that, the UE can receive PDCCH with the new TCI state.

[0266] The UE needs to meet the prescribed delay requirement to complete the handover process in the above step S23, and the UE is not required to receive or send data within the gap.

[0267] S24-1: For a target TCI state that is known, if the current target TCI state is in the active TCI state list for PDSCH, the TCI state switching delay requirement becomes shorter than the general requirement. For example, the time of gap1 is shorter than that of Figure 3 Compared with the situation shown in the previous T first-SSB and T SSB-proc becomes the period T of the new reference signal RS1 first - RS1 and processing delay T RS1-proc , the total gap1 also becomes shorter, that is, (T first-RS1 +T RS1-proc ).

[0268] S24-2: For the target TCI state is unknown (unknown), if the current target TCI state is in the activeTCI state list for PDSCH, the TCI-state switch delay requirement becomes shorter than the existing protocol requirement. For example, the time of gap1 is shorter than that of Figure 3 Compared with the situation shown in the previous T first-SSB and T ssB-proc becomes the period T of the new reference signal RS1 first-RS1 and processing delay and T RS1-proc , the total gap also becomes shorter, that is, T L1-RSRP +TO uk *(T first-RS1 +T RS1-proc ). Where T L1-RSRP andTO uk Please refer to the relevant description of Example 1.

[0269] The state switching method of this example can shorten the data transmission interruption of the current serving cell during TCI state switching, improve the switching efficiency, and reduce the throughput loss, especially the loss of PDCCH transmission rate.

[0270] Example 3: MAC-CE or RRC activated TCI state switching hybrid DCI activated RS, supporting fast configuration and fast adjustment of reference signals (one short timing adjustment), shortening gap1.

[0271] S31. The network side may indicate a corresponding TCI state for a downlink signal or a downlink channel.

[0272] S32, when the network configures MAC-CE or RRS activated TCI-state switching, the network configuration triggers a DCI to activate a new reference signal RS1 configuration for UE fast adjustment (one shorttumingadjustment). Generally, the period of RS1 is a short period (such as 5ms, 10ms, 20ms)

[0273] For S33, reference may be made to the related descriptions of S13 and S23 in the above examples.

[0274] For S34, reference may be made to the related descriptions of S14 and S24 in the above examples.

[0275] In this example, DCI can be used to flexibly configure the reference signal for TCI state switching, which can meet the needs of services with different latency requirements, especially shortening existing interruptions and enhancing the TCI state switching design, which can improve the efficiency of switching and reduce throughput loss, especially the loss of PDCCH transmission rate.

[0276] Example 4: DCI activated TCI state switching hybrid DCI activated RS, supporting fast configuration and oneshot adjustment of reference signals, shortening gap1

[0277] S41. The network side can indicate the corresponding TCI state for the downlink signal or downlink channel

[0278] S42, when the network configures the TCI-state switching activated by DCI, the network also configures a DCI to activate a new reference signal RS1 for UE to adjust quickly (one short timing adjustment). For example, the period of RS1 can be a short period (such as 5ms, 10ms, 20ms)

[0279] For S43, reference may be made to the related descriptions of S13 and S23 in the above examples.

[0280] For S44, reference may be made to the related descriptions of S14 and S24 in the above examples.

[0281] In this example, DCI can be used to flexibly configure the reference signal for TCI state switching, which can meet the needs of services with different latency requirements, especially shortening existing interruptions and enhancing the TCI state switching design, which can improve the efficiency of switching and reduce throughput loss, especially the loss of PDCCH transmission rate.

[0282] 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 state for the downlink signal or downlink channel.

[0283] Example 5: Active TCI state list update

[0284] For dedicated RSs that support fast TCI state switching, a subset is preconfigured or marked in the active TCI state list. Once the UE supports or reports the capability of fast TCI state switching, the network can configure this set of TCI state list TCI state list1 for the UE when performing TCI state switching.

[0285] Figure 7 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. The terminal device 400 may include:

[0286] A receiving unit 410, configured to receive configuration information for activating a transmission configuration indication TCI state switching, where the configuration information for activating the TCI state switching is also used to instruct the terminal device 400 to perform a fast adjustment based on the first reference signal;

[0287] The processing unit 420 is used to perform the TCI state switching based on the configuration information for activating the TCI state switching.

[0288] Optionally, performing 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.

[0289] Optionally, a period of the first reference signal is smaller than a time threshold and / or belongs to a period included in a fast adjustment period set.

[0290] Optionally, 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 a fast adjustment period set.

[0291] Optionally, the configuration information for activating TCI state switching is at least one of the following:

[0292] First configuration information for activating TCI state switching through RRC;

[0293] Activate second configuration information of TCI state switching through MAC CE;

[0294] The third configuration information for activating TCI state switching through DCI.

[0295] Optionally, the first configuration information includes at least one of the following:

[0296] a first reference signal;

[0297] A resource identifier of the first reference signal;

[0298] The period of the first reference signal.

[0299] 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.

[0300] Optionally, the first reference signal is a CSI-RS or an SSB, and a period corresponding to a resource identifier of the first reference signal is less than a time threshold and / or belongs to a period included in a fast adjustment period set.

[0301] Optionally, the second configuration information is at least one of the following:

[0302] Activate / deactivate TCI state for PDSCH MAC CE dedicated to terminal devices.

[0303] TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

[0304] Optionally, the PDSCH MAC CE dedicated to the terminal device includes an extension bit, and the extension bit is used to indicate the first reference signal.

[0305] 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.

[0306] Optionally, the third configuration information includes at least one of the following:

[0307] a first reference signal;

[0308] The period of the first reference signal.

[0309] Optionally, the processing unit 420 is further configured to:

[0310] Determine a first delay of the TCI state switching based on the first reference signal;

[0311] Determine a second delay of the TCI state switching based on a second reference signal, where the second reference signal is a CSI-RS or an SSB;

[0312] When the first delay is less than the second delay, the TCI state switching is performed based on the period and processing delay of the first reference signal.

[0313] Optionally, a period of the first reference signal is smaller than a period of the second reference signal.

[0314] Optionally, the processing unit 420 is used to determine the first delay of the TCI state switching based on the first reference signal, including: when the target TCI state is known, the terminal device 400 determines the first delay based on the period and processing delay of the first reference signal.

[0315] Optionally, the processing unit 420 is used to determine the first delay of the TCI state switching based on the first reference signal, including: when the target TCI state is unknown, the terminal device 400 determines the first delay based on the L1-RSRP measurement time, the period of the first reference signal and the processing delay.

[0316] Optionally, the receiving unit 410 is further used to receive the PDCCH using the target TCI state after receiving and processing the activation signaling and then after the first delay.

[0317] Optionally, the terminal device 400 does not require to receive or send data during the first delay.

[0318] like Figure 8 As shown, the terminal device 400 also includes:

[0319] The reporting unit 430 is used to report the capability of supporting fast adjustment of TCI state switching and / or the request for fast adjustment of TCI state switching.

[0320] Optionally, the receiving unit 410 is further used to receive a TCI status indicated by the network device for downlink transmission.

[0321] The terminal device 400 of the embodiment of the present application can implement the corresponding functions of the terminal device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the terminal device 400 can be found in the corresponding descriptions in the above method embodiments, which will not be repeated here. It should be noted that the functions described by the various modules (sub-modules, units or components, etc.) in the terminal device 400 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.), or by the same module (sub-module, unit or component, etc.).

[0322] 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:

[0323] The sending unit 510 is used to send 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 rapid adjustment based on the first reference signal.

[0324] 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.

[0325] Optionally, a period of the first reference signal is smaller than a time threshold and / or belongs to a period included in a fast adjustment period set.

[0326] Optionally, 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 a fast adjustment period set.

[0327] Optionally, the configuration information for activating TCI state switching is at least one of the following:

[0328] First configuration information for activating TCI state switching through RRC;

[0329] Activate second configuration information of TCI state switching through MAC CE;

[0330] The third configuration information for activating TCI state switching through DCI.

[0331] Optionally, the first configuration information includes at least one of the following:

[0332] a first reference signal;

[0333] A resource identifier of the first reference signal;

[0334] The period of the first reference signal.

[0335] 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.

[0336] Optionally, the first reference signal is a CSI-RS or an SSB, and a period corresponding to a resource identifier of the first reference signal is less than a time threshold and / or belongs to a period included in a fast adjustment period set.

[0337] Optionally, the second configuration information is at least one of the following:

[0338] Activate / deactivate TCI state for PDSCH MAC CE dedicated to terminal devices.

[0339] TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

[0340] Optionally, the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device includes an extension bit, and the extension bit is used to indicate the first reference signal.

[0341] Optionally, at least one TCI state identifier in the PDSCH MAC CE dedicated to the terminal device or the PDCCH MAC CE dedicated to the terminal device is used to indicate the first reference signal.

[0342] Optionally, the third configuration information includes at least one of the following:

[0343] a first reference signal;

[0344] The period of the first reference signal.

[0345] Optionally, 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.

[0346] like Fig.10 As shown, the network device 500 also includes:

[0347] The receiving unit 520 is used to receive 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.

[0348] Optionally, the sending unit 510 is also used to send a TCI status indicating downlink transmission to the terminal device.

[0349] The network device 500 of the embodiment of the present application can implement the corresponding functions of the network device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the network device 500 can be found in the corresponding descriptions in the above method embodiments, which will not be repeated here. It should be noted that the functions described by the various modules (sub-modules, units or components, etc.) in the network device 500 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.), or by the same module (sub-module, unit or component, etc.).

[0350] Fig.116 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, which can call and run a computer program from a memory to enable the communication device 600 to implement the method in the embodiment of the present application. For example, the processor 610 can be used to execute the related functions of the processing unit 420 in the above embodiment.

[0351] Optionally, the communication device 600 may further 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 method in the embodiment of the present application.

[0352] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0353] 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, to send information or data to other devices, or to receive information or data sent by other devices. For example, the transceiver 630 may be used to perform the related functions of the receiving unit 410 and the reporting unit 430 in the above-mentioned embodiment.

[0354] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of the antennas may be one or more.

[0355] Optionally, the communication device 600 may be a network device of an 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 will not be described in detail here for the sake of brevity.

[0356] Optionally, the communication device 600 may be a terminal device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0357] Fig.12 7 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 to implement the method in the embodiment of the present application.

[0358] 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.

[0359] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0360] 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 obtain information or data sent by other devices or chips.

[0361] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0362] 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 will not be described here for the sake of brevity.

[0363] 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 the various methods of the embodiments of the present application, which will not be described here for the sake of brevity.

[0364] The chips used in the network device and the terminal device may be the same chip or different chips.

[0365] It should be understood that the chip 700 mentioned in the embodiment of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0366] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC) or other programmable logic devices, transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0367] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM) or a flash memory. The volatile memory may be a random access memory (RAM).

[0368] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), 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 link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, 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.

[0369] Fig.13 8 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.

[0370] The terminal device 810 is used 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 a quick adjustment based on a first reference signal. The terminal device 810 performs the TCI state switching based on the configuration information for activating TCI state switching.

[0371] The network device 820 is used to send configuration information for TCI state switching, and the configuration information for activating TCI state switching is also used to instruct the terminal device to perform rapid adjustment based on the first reference signal.

[0372] 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 the sake of brevity, they will not be described in detail here.

[0373] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using 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 process or function in accordance with the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access 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)).

[0374] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0375] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0376] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A state switching method, comprising: The terminal device receives configuration information for activating TCI state switching, where the configuration information for activating TCI state switching is further used to instruct the terminal device to perform fast adjustment based on the first reference signal; The terminal device performs the TCI state switching based on the configuration information for activating the TCI state switching; The fast adjustment based on the first reference signal includes at least one of timing adjustment, beam direction adjustment and reference signal power adjustment based on at least one first reference signal.

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

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

4. The method according to claim 1, wherein: The configuration information for activating TCI state switching is at least one of the following: First configuration information for activating TCI state switching through radio resource control RRC; Second configuration information for activating TCI state switching through a medium access control-control element MAC CE; The third configuration information for activating TCI state switching through downlink control information DCI.

5. The method according to claim 4, wherein: The first configuration information includes at least one of the following: a first reference signal; A resource identifier of the first reference signal; The period of the first reference signal.

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

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

8. The method according to claim 4, wherein: The second configuration information is at least one of the following: Activate / deactivate the TCI state of the physical downlink shared channel PDSCH MAC CE dedicated to the terminal device; TCI status indication for the physical downlink control channel PDCCH MAC CE dedicated to the terminal device.

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

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

11. The method according to claim 4, wherein: The third configuration information includes at least one of the following: a first reference signal; The period of the first reference signal.

12. The method according to any one of claims 1 to 11, wherein: The terminal device performs the TCI state switching based on the configuration information for activating the TCI state switching, including: Determine a first delay of the TCI state switching based on the first reference signal; Determine a second delay of the TCI state switching based on a second reference signal, where the second reference signal is a CSI-RS or an SSB; When the first delay is less than the second delay, the TCI state switching is performed based on the period and processing delay of the first reference signal.

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

14. The method according to claim 12, wherein: Determining a first delay of the TCI state switching based on the first reference signal includes: When the target TCI state is known, the terminal device determines the first delay based on the period and processing delay of the first reference signal.

15. The method according to claim 12, wherein: Determining a first delay of the TCI state switching based on the first reference signal includes: When the target TCI state is unknown, the terminal device determines the first delay based on the first layer reference signal received power L1-RSRP measurement time, the period of the first reference signal and the processing delay.

16. The method according to claim 13, wherein: The method further comprises: After receiving and processing the activation signaling and then the first delay, the terminal device receives the PDCCH in the target TCI state.

17. The method according to claim 12, wherein: The terminal device does not require to receive or send data within the first delay.

18. The method according to any one of claims 1 to 11, wherein: The method further comprises: The terminal device reports the capability of supporting rapid adjustment of TCI state switching and / or makes a request for rapid adjustment of TCI state switching.

19. The method according to any one of claims 1 to 11, wherein: The method further comprises: The terminal device receives the TCI status indicated by the network device for downlink transmission.

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

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

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

23. The method according to claim 20, wherein: The configuration information for activating TCI state switching is at least one of the following: First configuration information for activating TCI state switching through RRC; Activate second configuration information of TCI state switching through MAC CE; The third configuration information for activating TCI state switching through DCI.

24. The method according to claim 23, wherein: The first configuration information includes at least one of the following: a first reference signal; A resource identifier of the first reference signal; The period of the first reference signal.

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

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

27. The method according to claim 23, wherein: The second configuration information is at least one of the following: Activate / deactivate TCI state for PDSCH MAC CE dedicated to terminal equipment; TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

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

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

30. The method of claim 23, wherein: The third configuration information includes at least one of the following: a first reference signal; The period of the first reference signal.

31. The method according to any one of claims 20 to 30, wherein: 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.

32. The method according to any one of claims 20 to 30, wherein: The method further comprises: The network device receives the capability of supporting rapid adjustment of TCI state switching and / or the request for rapid adjustment of TCI state switching reported by the terminal device.

33. The method according to any one of claims 20 to 30, wherein: The method further comprises: The network device sends a TCI status indicating downlink transmission to the terminal device.

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

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

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

37. The terminal device according to claim 34, wherein: The configuration information for activating TCI state switching is at least one of the following: First configuration information for activating TCI state switching through RRC; Activate second configuration information of TCI state switching through MAC CE; The third configuration information for activating TCI state switching through DCI.

38. The terminal device according to claim 37, wherein: The first configuration information includes at least one of the following: a first reference signal; A resource identifier of the first reference signal; The period of the first reference signal.

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

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

41. The terminal device according to claim 37, wherein: The second configuration information is at least one of the following: Activate / deactivate TCI state for PDSCH MAC CE dedicated to terminal equipment; TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

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

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

44. The terminal device according to claim 37, wherein: The third configuration information includes at least one of the following: a first reference signal; The period of the first reference signal.

45. The terminal device according to any one of claims 34 to 44, wherein: The processing unit is also used for: Determine a first delay of the TCI state switching based on the first reference signal; Determine a second delay of the TCI state switching based on a second reference signal, where the second reference signal is a CSI-RS or an SSB; When the first delay is less than the second delay, the TCI state switching is performed based on the period and processing delay of the first reference signal.

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

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

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

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

50. The terminal device according to claim 45, wherein: The terminal device does not require to receive or send data within the first delay.

51. The terminal device according to any one of claims 34 to 44, wherein: The terminal device further includes: A reporting unit, used to report the capability of supporting rapid adjustment of TCI state switching and / or a request for rapid adjustment of TCI state switching.

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

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

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

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

56. The network device according to claim 53, wherein: The configuration information for activating TCI state switching is at least one of the following: First configuration information for activating TCI state switching through RRC; Activate second configuration information of TCI state switching through MAC CE; The third configuration information for activating TCI state switching through DCI.

57. The network device according to claim 56, wherein: The first configuration information includes at least one of the following: a first reference signal; A resource identifier of the first reference signal; The period of the first reference signal.

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

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

60. The network device according to claim 56, wherein: The second configuration information is at least one of the following: Activate / deactivate TCI state for PDSCH MAC CE dedicated to terminal equipment; TCI status indication for PDCCH MAC CE dedicated to terminal equipment.

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

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

63. The network device according to claim 56, wherein: The third configuration information includes at least one of the following: a first reference signal; The period of the first reference signal.

64. The network device according to any one of claims 53 to 63, wherein: 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.

65. The network device according to any one of claims 53 to 63, wherein: The network device also includes: A receiving unit is used to receive the capability of supporting rapid adjustment of TCI state switching and / or a request for rapid adjustment of TCI state switching reported by the terminal device.

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

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

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

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

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

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

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

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

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

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