Reporting method, terminal device, and network device

Abstract

Provided are a reporting method, a terminal device, and a network device. The method comprises: a terminal device sends reporting information to a network device, the reporting information being triggered on the basis of a first event, and the reporting information being related to a reference signal resource.

Description

Reporting method, terminal device and network device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a reporting method, terminal equipment, and network equipment. Background Art

[0002] For multi-beam systems, terminal devices and network equipment can select appropriate transmit and receive beams through a beam management process. This process includes beam measurement, where the terminal device measures the beam and reports the measurement results to the network equipment.

[0003] Currently, the timing of reporting information is configured by network devices. If network devices configure terminal devices to report frequently, it will cause large signaling overhead; if network devices configure terminal devices to report infrequently, the reported information may become outdated, resulting in reduced communication performance.

[0004] Summary of the Invention

[0005] The present application provides a reporting method, a terminal device, and a network device. The following introduces various aspects of the present application.

[0006] In a first aspect, a reporting method is provided, comprising: a terminal device sending reporting information to a network device, wherein the reporting information is triggered based on a first event and is related to a reference signal resource.

[0007] In a second aspect, a reporting method is provided, including: a network device receives reporting information sent by a terminal device, where the reporting information is triggered based on a first event and is related to a reference signal resource.

[0008] According to a third aspect, a terminal device is provided, comprising: a first communication unit, configured to send reporting information to a network device, wherein the reporting information is triggered based on a first event and is related to a reference signal resource.

[0009] In a fourth aspect, a network device is provided, including: a first communication unit, configured to receive reporting information sent by a terminal device, wherein the reporting information is triggered based on a first event, and the reporting information is related to a reference signal resource.

[0010] In a fifth aspect, a terminal device is provided, comprising a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the terminal device executes part or all of the steps in the method of the first aspect.

[0011] In the sixth aspect, a network device is provided, comprising a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the network device executes part or all of the steps in the method of the second aspect.

[0012] In a seventh aspect, a device is provided, comprising a processor for calling a program from a memory so that the device executes the method as described in the first aspect or the second aspect.

[0013] In an eighth aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0014] In a ninth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0015] In a tenth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0016] In an eleventh aspect, a computer program is provided, wherein the computer program enables a computer to execute the method as described in the first aspect or the second aspect.

[0017] The embodiment of the present application triggers the terminal device to send reporting information through a first event, or in other words, the timing of sending the reporting information is determined autonomously by the terminal device. Since the terminal device has a more accurate and timely observation of the quality changes of the beam, the terminal device autonomously determines the timing of sending the reporting information, which can bring more timely reporting information and reduce signaling overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a system architecture diagram of a wireless communication system to which an embodiment of the present application may be applied.

[0019] FIG2 is an example diagram of the MAC CE activation TCI state provided by the related art.

[0020] FIG3 is a flow chart of the reporting method provided in an embodiment of the present application.

[0021] FIG4 is an example diagram of a serving beam and candidate beams in a serving cell and non-serving cell scenario provided in an embodiment of the present application.

[0022] FIG5 is an example diagram of the degree of fluctuation of link quality provided in an embodiment of the present application.

[0023] FIG6 is an example diagram of the fluctuation degree of link quality provided by another embodiment of the present application.

[0024] FIG7 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application.

[0025] FIG8 is a schematic diagram of the structure of a network device provided in an embodiment of the present application.

[0026] FIG9 is a schematic structural diagram of a device to which an embodiment of the present application can be applied. DETAILED DESCRIPTION

[0027] The technical solution in this application will be described below with reference to the accompanying drawings.

[0028] Figure 1 is a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 can provide network coverage for a specific geographical area and can communicate with the terminal device 120 (such as the terminal device 120a in Figure 1) located in the coverage area. The terminal device 120 can access a network (such as a wireless network) through the network device 110. Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not specifically limited in the embodiment of the present application.

[0029] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0030] The terminal device in the embodiments of the present application may also be referred to as a terminal device, an access terminal, a user unit, a user station, a mobile station, a mobile station (MS), a mobile terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects, and machines, such as a handheld device or a vehicle-mounted device with a wireless connection function. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity that provides sidelink signals between terminal devices in V2X or D2D. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through a base station.

[0031] The network device in the embodiments of the present application may be a device for communicating with a terminal device, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. A base station may broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof.

[0032] Multi-beam systems in NR systems

[0033] Communication systems (e.g., NR) are designed to provide wide-bandwidth communications in high-frequency bands (e.g., bands above 6 GHz). As the operating frequency increases, path loss during transmission increases, impacting the coverage capabilities of high-frequency systems. Therefore, to effectively ensure high-frequency coverage, an effective technical solution is to use massive multiple-in, multiple-out (MIMO) antenna arrays (MMIMO). These antennas form shaped beams with greater gain, overcome propagation loss, and ensure the coverage of the communication system.

[0034] In some communication systems (such as 2G, 3G, or 4G systems), a cell (or sector) uses a wide beam to cover the entire cell. Therefore, at every moment, terminal devices within the cell coverage area have the opportunity to obtain resources allocated by the system.

[0035] Some communication systems (such as NR or 5G systems) can cover the entire cell through different beams. That is, each beam covers a smaller range, and the effect of multiple beams covering the entire cell is achieved by temporal sweeping.

[0036] Different beams can be identified by the differences in the signals carried on the beams. For example, the synchronization signal and physical broadcast channel block (SS block, also called SS / PBCH block or SSB) transmitted on different beams are different, and the terminal device can identify different beams through different SSBs. For another example, the channel state information reference signal (CSI-RS) transmitted on different beams is different, and the terminal device can identify different beams through CSI-RS and / or CSI-RS resources.

[0037] To distinguish different reference signal resources, each reference signal resource may correspond to a reference signal resource index, such as a CSI-RS resource index (CRI), an SSB resource index (SSBRI), or a channel sounding reference signal resource index (SRS-resource index, SRI). The SSB resource index may also be referred to as an SSB time index.

[0038] It should be understood that the reference signals and corresponding reference signal resources listed above are only exemplary and should not constitute any limitation to this application. This application does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functions.

[0039] For different communication systems, downlink signals or downlink channels (such as physical downlink control channel (PDCCH), physical downlink shared channel (PDSCH)) can be transmitted through different downlink beams. For example, for communication systems below 6G, terminal devices generally do not have analog beams, so the terminal devices can use omnidirectional antennas (or nearly omnidirectional antennas) to receive downlink signals sent by network devices. The network device can send downlink signals to the terminal device through different downlink transmit beams. For another example, for a millimeter wave system, the terminal device may have an analog beam, and the terminal device can receive signals using a downlink receive beam corresponding to the downlink transmit beam. In this case, the terminal device can determine the transmit beam-related information on the network device side or the receive beam-related information corresponding to the terminal device side based on the beam indication information.

[0040] In some embodiments, the beam indication information may not directly indicate the beam itself, but may instead indicate it through quasi co-location (QCL) information (or QCL assumption) between signals. The terminal device may determine the corresponding received signal or channel based on the QCL information, where the QCL information may be indicated through a transmission configuration indicator state (TCI state).

[0041] Generally, the beam used by the transmitter to send signals is called a "transmit beam", and the beam used by the receiver to receive signals is called a "receive beam".

[0042] In some cases, the above-mentioned transmit beam may also be referred to as a spatial domain transmission filter or a transmit spatial filter, and accordingly, the above-mentioned receive beam may also be referred to as a spatial domain reception filter or a receive spatial filter. In other cases, the above-mentioned transmit beam may also be referred to as a spatial domain transmission parameter, and accordingly, the above-mentioned receive beam may also be referred to as a spatial domain reception parameter. Unless otherwise specified, the spatial filter in the embodiment of the present application may include a transmit spatial filter and / or a receive spatial filter. For ease of understanding, the embodiment of the present application is mainly introduced using the beam as an example.

[0043] Unified TCI status

[0044] In the 3GPP standardization process, the concept of TCI state was proposed in the Release 15 version. This concept is used to indicate downlink spatial information (QCL-Type D) and transmit QCL information (QCL-Type A, QCL-Type B, and QCL-Type C) in the time and / or frequency domains. Specifically, the QCL relationship can be simply described as the relationship of large-scale fading from a source reference signal to a target reference signal. For beam indication (QCL-Type D), after the terminal device obtains the QCL relationship between the two source reference signals and the target reference signal from the network device, it can use the receive beam that previously received the source reference signal when receiving the target reference signal.

[0045] However, the TCI status indication mechanism is only applicable to downlink channels and signals, and has many limitations in its application in NR systems. In addition, the design is too flexible and has a large signaling overhead, such as always sending the TCI status ID in downlink control information (DCI) scheduling. The above TCI state can also be called the traditional TCI state. In order to provide a unified uplink and downlink beam management mechanism for the NR system, 3GPP R17 proposed the concept of a unified TCI state based on the design of the R15 / 16 TCI state.

[0046] The unified TCI state includes two modes, which are introduced below.

[0047] Mode 1: Joint TCI state: The joint TCI state includes a type of TCI state that can be applied to uplink signals and channels, and downlink channels and signals.

[0048] Mode 2: Separate TCI state. The separate TCI state includes two types of TCI states: uplink TCI state (UL TCI state) and downlink TCI state (DL TCI state). The uplink TCI state applies only to uplink signals and channels, while the downlink TCI state applies only to downlink signals and channels.

[0049] The downlink channel may be, for example, a PDCCH, a PDSCH, etc., and the downlink signal may be, for example, a CSI-RS. The CSI-RS may be an aperiodic CSI-RS. The uplink channel may be, for example, a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), etc., and the uplink signal may be, for example, a sounding reference signal (SRS).

[0050] If the uplink signal and channel use the same uplink transmit beam, the uplink TCI state or the combined TCI state can be used. If the downlink signal and channel use the same downlink transmit beam, the downlink TCI state or the combined TCI state can be used. Optionally, the uplink beam indication can be indicated simultaneously with the uplink power control parameters using the uplink TCI state or the combined TCI state.

[0051] The unified TCI state can be indicated using one or more of radio resource control (RRC), media access control element (MAC CE), and DCI. The following will describe in detail how the unified TCI state is indicated.

[0052] In carrier aggregation scenarios, the beam indication on a single common carrier (CC) can apply to multiple different carriers. In other words, multiple carriers can share a single beam. These co-beam carriers are configured by the network equipment into a carrier list. Based on the beam indication on one carrier, the terminal device can determine the beams corresponding to the other carriers.

[0053] The unified TCI state can be applied to the beam management function between cells, that is, the unified TCI state can be used to manage the beams between cells.

[0054] The "unified" in the unified TCI state has multiple meanings. The first level of "unified" means that it unifies the uplink and downlink beam indication mechanisms, because the traditional TCI state is only used for downlink beam indication, and the uplink beam indication uses signaling based on spatial relation information. The second level of "unified" means the unification of beams between different channels. For example, under the configuration of the separated DL / UL TCI state, the terminal device can consider the downlink PDCCH (terminal device exclusive) and PDSCH (terminal device exclusive) to be unified into the same beam for transmission; in addition, the terminal device can use the same beam to transmit the uplink PUCCH and PUSCH. Under the configuration of the joint TCI state, the terminal device can consider that different channels and signals of the uplink and downlink can have good beam symmetry, that is, the uplink and downlink can use symmetrical beam pairs for communication.

[0055] The unified TCI status in R17 supports application under a single transmit / receive point (STRP), while R18 can support the indication of the unified TCI status of multiple transmit / receive points (MTRP). However, due to the complexity of the system, it currently only supports the indication of 2 and / or 2 pairs of TCI status.

[0056] From a signaling perspective, unified TCI status can be configured through RRC, MAC CE activation / deactivation, and / or dynamic DCI indication. The following describes how to indicate unified TCI status.

[0057] RRC configuration TCI status

[0058] Typically, the TCI state may include a TCI state identity (ID) and / or QCL information. The TCI state identity is used to identify the TCI state. The QCL information may include a QCL type configuration and a QCL reference signal configuration.

[0059] The aforementioned QCL type configuration may include QCL type A, QCL type B, QCL type C, or QCL type D. Definitions of different QCL type configurations are as follows.

[0060] QCL Type A: {Doppler shift, Doppler spread, average delay, delay spread}

[0061] QCL Type B (QCL-TypeB): {Doppler shift, Doppler spread}

[0062] QCL Type C: {Doppler shift, average delay}

[0063] QCL Type D (QCL-TypeD): {spatial reception parameters}.

[0064] In the downlink or joint TCI state, QCL-Type is categorized as Type-A, Type-B, Type-C, and Type-D. QCL-Type D indicates that the two reference signals can use the same spatial receive parameters, namely, the spatial receive filter, and thus the same receive "beam." In the uplink, TCI states only indicate spatial relationship information, without the aforementioned QCL relationships of QCL-Types A, B, and C.

[0065] Currently, the communication protocol stipulates that the RRC parameter configuration of the above TCI state can be as follows.

[0066] In addition, the following RRC parameters can be used to distinguish whether the configuration is a joint TCI state or a separate TCI state.

[0067] unifiedTCI-StateType-r17ENUMERATED{separate,joint}

[0068] MAC CE activation / deactivation TCI status

[0069] Figure 2 shows a schematic diagram of a MAC CE frame structure. It should be noted that the scheme in Figure 2 is only an example for ease of understanding and should not limit the scheme of the embodiment of the present application. Oct in Figure 2 represents a byte.

[0070] As shown in Figure 2 , the MAC CE may include the serving cell ID, which can be used to indicate serving cell information. The MAC CE may also include the DL BWP ID, which indicates downlink bandwidth information. The MAC CE may also include the UL BWP ID, which indicates uplink bandwidth information. "R" represents a reserved bit, and the value of the "R" bit may be, for example, 0.

[0071] The MAC CE may include a TCI State ID field, which can be understood as a TCI State Indication field. The TCI State ID field can indicate a TCI state, which can be an uplink TCI state or a downlink TCI state. Optionally, if the D / U Indication field is set to 1, the TCI State ID field in the same byte is used to indicate the downlink TCI state.

[0072] In some implementations, the unified TCI state activation / deactivation MAC CE is identified by a media access control (MAC) subheader with an enhanced logical channel identification (ELCID). Typically, the MAC header identifier is of variable size and includes one or more of the following fields:

[0073] Serving cell ID: This field indicates the identifier of the serving cell to which the MAC CE applies. The length of this field can be 5 bits. If the specified serving cell is configured as part of TCI update list 1 (simultaneousU-TCI-UpdateList1), TCI update list 2 (simultaneousU-TCI-UpdateList2), TCI update list 3 (simultaneousU-TCI-UpdateList3) or TCI update list 4 (simultaneousU-TCI-UpdateList4) specified in TS 38.331 [5], this MAC CE applies to all serving cells in simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4, respectively.

[0074] Downlink Bandwidth Part (BWP) Identifier (DL BWP ID): This field indicates the DL BWP that the MAC CE applies as the codepoint of the DCI Bandwidth Part Indicator field specified in TS 38.212 [9]. The length of this field can be 2 bits.

[0075] Uplink BWP Identifier (UL BWP ID): This field indicates the UL BWP used by the MAC CE as the codepoint of the DCI Bandwidth Part Indicator field specified in TS 38.212 [9]. If the value of the unified TCI-StateType in the serving cell represented by the serving cell ID is Union, this field is considered reserved. The BWP ID field can be 2 bits long.

[0076] The Pi field indicates whether each TCI code point corresponds to multiple TCI states or a single TCI state. If the value of this field is 1, it indicates that the i-th TCI code point includes both the downlink TCI state and the uplink TCI state. If the value of this field is 0, it indicates that the i-th TCI code point includes only the downlink (or joint) TCI state (DL / joint TCI state) or the uplink TCI state. The mapping relationship between code points and TCI states is determined based on the position order of the code points in the TCI state identifier.

[0077] The D / U field indicates whether the TCI state ID in the same byte is the downlink (or joint) TCI state (DL / joint TCI state) or the uplink TCI state. If the value of this field is 1, the TCI state identifier in the same byte is the downlink (or joint) TCI state. If the value of this field is 0, the TCI state identifier in the same byte is the uplink TCI state.

[0078] TCI state identifier (TCI state ID): This field indicates the TCI state. For example, it can be the TCI-state identifier specified in TS 38.331[5]. If the value of the D / U field is 1, the 7-bit TCI state ID specified in TS 38.331[5], namely TCI-stateId, can be used. If the value of the D / U field is 0, the highest bit of the TCI state ID is reserved, and the remaining 6 bits represent the TCI-ul-state-ID specified in TS 38.331[5]. Generally, there are a maximum of 16 active TCI states.

[0079] R field: This field is a reserved bit and can usually be set to 0.

[0080] DCI indicates TCI status

[0081] The network device can use the TCI state field in DCI format 1_1 / 1_2 to indicate one or more TCI states that the terminal device should use. Taking the state of a flag bit in the TCI state field as an example, "000" is a code point corresponding to the first TCI state ID 1 activated by the MAC CE, and "111" is another code point corresponding to the last TCI state ID 8 activated by the MAC CE.

[0082] Traditional beam management technology

[0083] Starting from Release 15, NR standardized the beam management mechanism. Beam management mainly includes beam-related measurements and reporting, as well as network equipment issuing beam instructions based on reports from terminal devices.

[0084] The beam measurement and reporting process may refer to that the terminal device may measure multiple transmit beams or transmit receive beam pairs to perform beam selection. For example, the terminal device may select the optimal beam and send the optimal beam to the network device. The optimal beam may be, for example, the N beams with the highest layer 1 reference signal receiving power (layer 1reference signal receiving power, L1-RSRP) or layer 1 signal to interference plus noise ratio (layer 1signal to interference plus noise ratio, L1-SINR), where N is an integer greater than or equal to 1. When reporting to the network device, the terminal device may report only the beam information of the optimal beam, or may report the measurement results corresponding to the optimal beam at the same time. The information of the beam may include the identifier of the reference signal, the number of the reference signal, etc.

[0085] The beam measurement may be based on a periodic, semi-persistent, or aperiodic downlink reference signal, for example, a CSI-RS or SSB.

[0086] Beam reporting can also be periodic, semi-continuous or non-periodic beam reporting, or in other words, the terminal device can send reporting information to the network device periodically, semi-continuously or non-periodically. For example, the terminal device can use PUCCH resources to periodically send reporting information to the network device. As another example, the terminal device can use PUCCH or PUSCH resources to semi-continuously send reporting information to the network device, and the network device can use MAC CE to activate or deactivate semi-continuous beam reporting. As another example, the terminal device can use PUSCH resources to non-periodically send reporting information to the network device, and the PUSCH resources can be scheduled by the DCI sent by the network device. The network device can schedule the terminal device to perform frequent non-periodic reporting through DCI.

[0087] When the network device receives the reporting information sent by the terminal device, it can perform beam indication on the terminal device, that is, the network device can indicate a TCI state (STRP) or a group of TCI states (MTRP). This application does not specifically limit the TCI state. For example, the TCI state can be a traditional (legacy) TCI state or a unified TCI state. Regardless of the type of TCI state, it can include a downlink reference signal (applicable to downlink and uplink transmission) or an uplink reference signal (applicable only to uplink transmission). The QCL type of the reference signal can be type D, which is used to indicate the QCL between different reference signals, that is, the beam relationship.

[0088] To obtain the optimal beam for data (or control) transmission in real time, network equipment may configure (or activate) the terminal device to perform periodic, semi-continuous, or aperiodic beam reporting. The terminal device can perform beam measurement and reporting according to the instructions of the network device. Although the terminal device can immediately detect downlink beam problems, it still needs to report them according to the instructions of the network device.

[0089] Frequent beam reporting by the network device for terminal devices may result in high uplink reporting overhead and control signaling overhead. Infrequent beam reporting by the network device for terminal devices may cause the reported information to be outdated, and the network device may not be able to obtain the optimal beam, resulting in degraded communication performance.

[0090] In another scenario, only when a beam failure occurs does the terminal device have the opportunity to update to a new beam through the beam failure recovery mechanism, which obviously delays the time for the terminal device to switch from the old beam to the new beam.

[0091] To address the above issues, embodiments of the present application propose that beam information reporting can be triggered by a first event. When the first event is met, the terminal device can proactively send the reporting information. In other words, beam information reporting can be proactively initiated by the terminal device. Because the terminal device has more accurate and timely observation of beam quality changes, beam reporting initiated by the terminal device can provide more timely reporting information and reduce beam reporting overhead.

[0092] The following describes in detail the reporting method provided by the embodiment of the present application in conjunction with Figure 3. The method shown in Figure 3 can be executed by a terminal device and a network device. The terminal device can be, for example, the terminal device 120 mentioned above, and the network device can be, for example, the network device 110 mentioned above.

[0093] Referring to Figure 3, in step S310, the terminal device sends reporting information to the network device. The reporting information may also be referred to as beam reporting information. The reporting information is triggered based on a first event, or in other words, the first event can be used to trigger the terminal device to report. The reporting information is related to the reference signal resource. In some embodiments, the first event may also be referred to as a beam management event. The reporting information triggered by the first event may also be understood as a beam reporting initiated by the terminal device or an event-driven beam reporting. The beam reporting initiated by the terminal device may be referred to as a beam reporting initiated by the terminal device (user equipment-initiated, UE-initiated).

[0094] The first event may be determined based on one or more of the following information: link quality corresponding to the first reference signal resource; link quality corresponding to the second reference signal resource; link quality corresponding to the third reference signal resource; interference information corresponding to the second reference signal resource; and interference information corresponding to the third reference signal resource. In some embodiments, link quality may also be referred to as link performance. In some embodiments, interference information may also be referred to as interference intensity. In some embodiments, reference signal resources may include SSB resources and / or CSI-RS resources.

[0095] The first reference signal resource is the serving cell of the terminal device, or in other words, the first reference signal resource is the serving beam of the serving cell. The first reference signal resource can be a resource used to transmit the serving beam. It should be noted that, in the absence of conflict, the first reference signal resource can be interchangeable with the serving beam of the serving cell or the serving beam. For ease of understanding, the first reference signal resource is referred to as the serving beam below.

[0096] The second reference signal resource is the reference signal resource of the serving cell of the terminal device, or in other words, the second reference signal resource is the candidate beam of the serving cell. The second reference signal resource can be a resource used to transmit the candidate beam of the serving cell. It should be noted that the second reference signal resource can be interchangeable with the candidate beam of the serving cell when no conflict occurs. For ease of understanding, the second reference signal resource is referred to as the candidate beam of the serving cell below.

[0097] The third reference signal resource is a reference signal resource for a non-serving cell, or in other words, a candidate beam for a non-serving cell. The third reference signal resource can be used to transmit a candidate beam for a non-serving cell. It should be noted that, in the absence of conflict, the third reference signal resource can be interchangeable with the candidate beam for a non-serving cell. For ease of understanding, the third reference signal resource is referred to as a candidate beam for a non-serving cell below.

[0098] The non-serving cell may be any cell except the serving cell. In some embodiments, the non-serving cell may be a cell adjacent to the serving cell.

[0099] In the embodiments of the present application, the serving beam and candidate beam may refer to a beam pair. For example, a serving beam may be a serving beam pair, where a serving beam may include an uplink beam and a downlink beam. A candidate beam may be a candidate beam pair, where a candidate beam may include an uplink beam and a downlink beam.

[0100] Figure 4 shows the relationship between a service beam, a candidate beam of a service cell, and a candidate beam of a non-service cell. In the scheme shown in Figure 4, the terminal device is located within the coverage area of ​​the service cell and the non-service cell, and can communicate with the service cell and the non-service cell at the same time. For example, the terminal device can measure the service beam 410 (such as measuring the reference signal carried on the service beam 410) to obtain the link quality corresponding to the service beam 410. For another example, the terminal device can measure the candidate beam 420 of the service cell (such as measuring the reference signal carried on the candidate beam 420) to obtain the link quality corresponding to the candidate beam 420. For another example, the terminal device can measure the candidate beam 430 of the non-service cell (such as measuring the reference signal carried on the candidate beam 430) to obtain the link quality corresponding to the candidate beam 430.

[0101] In some embodiments, link quality may also be referred to as link performance. Link quality may be measured by physical layer indicators. For example, link quality is determined based on one or more of the following: L1-RSRP, layer 1 reference signal receiving quality (L1-RSRQ), layer 1 received signal strength indicator (L1-RSSI), L1-SINR, signal to noise ratio (SNR), and PDCCH block error rate (BLER). In some implementations, the above indicators may be used directly as link quality. In other implementations, the above indicators may be used as input and output of a model, or in other words, one indicator may be converted into another indicator through a model. For example, L1-SINR may be used as input to the model, and PDCCH BLER may be used as output of the model, i.e., L1-SINR may be converted into PDCCH BLER through a model. Generally, when the PDCCH BLER is higher than 1%, it may be considered that the link quality is poor and needs to be adjusted.

[0102] In some embodiments, the first event can be determined based on the degree of fluctuation of the link quality corresponding to the first reference signal resource. The embodiments of the present application do not specifically limit the method for determining the degree of fluctuation of the link quality corresponding to the serving beam. The degree of fluctuation of the link quality corresponding to the serving beam can be determined based on one or more of the following: the number of times the link quality corresponding to the serving beam drops from above a first threshold to below or equal to the first threshold; or the duration that the link quality corresponding to the serving beam is below a second threshold. These two methods are described below.

[0103] As an example, the degree of fluctuation in the link quality corresponding to the serving beam can be determined based on the number of times the link quality corresponding to the serving beam drops from above a first threshold to below or equal to the first threshold within a first duration. For ease of description, the number of times the link quality corresponding to the serving beam drops from above the first threshold to below or equal to the first threshold is referred to as the number of fluctuations.

[0104] Figure 5 is a schematic diagram illustrating the degree of link quality fluctuation provided by an embodiment of the present application. In the link quality shown in Figure 5 , within a first duration, the link quality drops from above a first threshold to below or equal to the first threshold three times, i.e., the number of fluctuations is three. In the scenario shown in Figure 5 , a drop in link quality from above a first threshold to below or equal to the first threshold can refer to the link quality crossing the first threshold from top to bottom.

[0105] The first threshold may be a threshold predefined by a protocol, or the first threshold may be configured by a network device, or the first threshold may be determined by the terminal device itself.

[0106] The first duration may be a duration predefined by the protocol, or configured by the network device, or determined by the terminal device itself. The first duration may also be referred to as a first time window.

[0107] As another example, the degree of fluctuation of the link quality corresponding to the serving beam can be determined based on the duration of time during which the link quality corresponding to the serving beam is below the second threshold within the second duration. For example, the degree of fluctuation of the link quality corresponding to the serving beam can be determined based on the proportion of the duration of time during which the link quality corresponding to the serving beam is below the second threshold to the second duration. For ease of description, hereinafter, the duration of time during which the link quality corresponding to the serving beam is below the second threshold is referred to as the fluctuation duration, and the proportion of the duration of time during which the link quality corresponding to the serving beam is below the second threshold to the second duration is referred to as the fluctuation proportion.

[0108] Figure 6 is a schematic diagram of another link quality fluctuation degree provided by an embodiment of the present application. In the link quality shown in Figure 6, within the second time period (T), the link quality corresponding to the serving beam is lower than the second threshold for a duration of (t1+t2), i.e., the fluctuation duration is (t1+t2); the duration of the link quality corresponding to the serving beam is lower than the second threshold for a proportion of the second time period of (t1+t2) / T, i.e., the fluctuation ratio is (t1+t2) / T.

[0109] The second threshold can be a threshold predefined by the protocol, or configured by the network device, or determined by the terminal device itself. In some implementations, the second threshold can be the same as the first threshold. Of course, in some implementations, the second threshold can also be different from the first threshold. For example, the second threshold can be greater than the first threshold, or the second threshold can be less than the first threshold.

[0110] The second duration may be a duration predefined by the protocol, or configured by the network device, or determined by the terminal device itself. The second duration may also be referred to as a second time window.

[0111] The following describes the content of the first event. The first event may include one or more of the following 11 events. The following describes these 11 events.

[0112] Event 1: The link quality corresponding to the serving beam is greater than or equal to the third threshold.

[0113] Event 2: The link quality corresponding to the serving beam is less than or equal to the fourth threshold.

[0114] Event 3: The link quality corresponding to the candidate beam of the serving cell is greater than or equal to the sum of the link quality corresponding to the serving beam and the first offset.

[0115] Event 4: The link quality corresponding to the candidate beam of the non-serving cell is greater than or equal to the sum of the link quality corresponding to the serving beam and the second offset.

[0116] Event 5: The link quality corresponding to the candidate beam of the serving cell is greater than or equal to the fifth threshold.

[0117] Event 6: The link quality corresponding to the candidate beam of the non-serving cell is greater than or equal to the sixth threshold.

[0118] Event 7: The link quality corresponding to the serving beam is less than or equal to the seventh threshold, and the link quality corresponding to the candidate beam of the serving cell is greater than the eighth threshold.

[0119] Event 8: The link quality corresponding to the serving beam is less than or equal to the ninth threshold, and the link quality of the candidate beam corresponding to the non-serving cell is greater than the tenth threshold.

[0120] Event 9: The fluctuation degree of the link quality corresponding to the serving beam is greater than or equal to the first range.

[0121] Event 10: The interference of the candidate beam of the serving cell to the terminal device is greater than or equal to the eleventh threshold.

[0122] Event 11: The interference of the candidate beam of the non-service cell to the terminal device is greater than or equal to the twelfth threshold.

[0123] For event 1, the terminal device may send reporting information to the network device if the link quality corresponding to the serving beam is greater than or equal to the third threshold. A link quality corresponding to the serving beam being greater than or equal to the third threshold may indicate that the link quality corresponding to the serving beam is good. When the link quality corresponding to the serving beam is good, the terminal device sends reporting information to the network device, eliminating the need for the network device to configure subsequent measurement events for the terminal device, thereby reducing power consumption of the terminal device.

[0124] The third threshold may be a threshold predefined by a protocol, or the third threshold may be configured by a network device, or the third threshold may be determined by the terminal device itself.

[0125] For event 2, the terminal device may send reporting information to the network device if the link quality corresponding to the serving beam is less than or equal to the fourth threshold. The fact that the link quality corresponding to the serving beam is less than or equal to the fourth threshold may indicate that the link quality corresponding to the serving beam is poor. When the link quality corresponding to the serving beam is poor, the terminal device sends reporting information to the network device, which enables the network device to promptly update the serving beam for the terminal device and ensure communication performance between the terminal device and the network device. In some implementations, the third threshold may be greater than or equal to the fourth threshold.

[0126] The fourth threshold may be a threshold predefined by a protocol, or the fourth threshold may be configured by a network device, or the fourth threshold may be determined by the terminal device itself.

[0127] For event 3, the link quality corresponding to the candidate beam of the serving cell is greater than or equal to the sum of the link quality corresponding to the serving beam and the first offset, which can indicate that the link quality corresponding to the candidate beam of the serving cell is better than the link quality corresponding to the serving beam. When the link quality corresponding to the candidate beam of the serving cell is better than the link quality corresponding to the serving beam, the terminal device can send a reporting information to the network device so that the network device can replace a suitable serving beam for the terminal device to ensure the communication performance of the terminal device. For example, the network device can configure the candidate beam of the serving cell as the target beam, and the terminal device can switch from the serving beam to the candidate beam of the serving cell. This switching method can be called beam switching within the serving cell.

[0128] The first offset may be predefined by a protocol, or configured by a network device, or determined by the terminal device itself. The first offset may be, for example, 3 dB.

[0129] For event 4, the link quality corresponding to the candidate beam of the non-service cell is greater than or equal to the sum of the link quality corresponding to the service beam and the second offset, which can indicate that the link quality corresponding to the candidate beam of the non-service cell is better than the link quality corresponding to the service beam. When the link quality corresponding to the candidate beam of the non-service cell is better than the link quality corresponding to the service beam, the terminal device can send a reporting information to the network device so that the network device can replace the appropriate service beam for the terminal device to ensure the communication performance of the terminal device. For example, the network device can configure the candidate beam of the non-service cell as the target beam, and the terminal device can switch from the service beam to the candidate beam of the non-service cell. This switching method can be called inter-cell beam switching.

[0130] The second offset may be predefined by a protocol, or configured by a network device, or determined by the terminal device itself. The second offset may be, for example, 3 dB.

[0131] The embodiment of the present application does not specifically limit the size of the second offset and the first offset. For example, the second offset can be equal to the first offset, or the second offset can be greater than the first offset, or the second offset can be less than the first offset.

[0132] For event 5, the link quality corresponding to the candidate beam of the serving cell is greater than or equal to the fifth threshold, which may indicate that the link quality corresponding to the candidate beam of the serving cell is good. When the link quality corresponding to the candidate beam of the serving cell is good, the terminal device may send a reporting information to the network device, so that the network device may consider the candidate beam of the serving cell when changing the serving beam for the terminal device, so as to select a suitable serving beam for the terminal device. For example, the network device may configure the candidate beam of the serving cell as the target beam, and the terminal device may switch from the serving beam to the candidate beam of the serving cell. This switching method may be referred to as beam switching within the serving cell.

[0133] The fifth threshold may be a threshold predefined by a protocol, or configured by a network device, or determined by the terminal device itself. In some implementations, the fifth threshold may be greater than or equal to the fourth threshold.

[0134] For event 6, the link quality corresponding to the candidate beam of the non-service cell is greater than or equal to the sixth threshold, indicating that the link quality corresponding to the candidate beam of the non-service cell is better. When the link quality corresponding to the candidate beam of the non-service cell is better, the terminal device can send a reporting information to the network device, so that the network device can consider the candidate beam of the non-service cell when changing the service beam for the terminal device, so as to select a suitable service beam for the terminal device. For example, the network device can configure the candidate beam of the non-service cell as the target beam, and the terminal device can switch from the service beam to the candidate beam of the non-service cell. This switching method can be called inter-cell beam switching.

[0135] The sixth threshold may be a threshold predefined by a protocol, or the sixth threshold may be configured by a network device, or the sixth threshold may be determined by the terminal device itself.

[0136] The embodiment of the present application does not specifically limit the size of the sixth threshold. For example, the sixth threshold may be greater than or equal to the fourth threshold. For another example, the sixth threshold may be equal to the fifth threshold. For another example, the sixth threshold may be greater than the fifth threshold.

[0137] For event 7, the link quality corresponding to the service beam is less than or equal to the seventh threshold, and the link quality corresponding to the candidate beam of the service cell is greater than the eighth threshold. The eighth threshold may be greater than or equal to the seventh threshold. The link quality corresponding to the service beam is less than or equal to the seventh threshold, which may indicate that the link quality corresponding to the service beam is poor, and the link quality corresponding to the candidate beam of the service cell is greater than the eighth threshold, which may indicate that the link quality corresponding to the candidate beam of the service cell is good. When the link quality corresponding to the service beam is poor and the link quality corresponding to the candidate beam of the service cell is good, the terminal device may send reporting information to the network device, so that the network device may select a suitable service beam for the terminal device based on the reporting information. For example, the network device may configure the candidate beam of the service cell as the target beam, and the terminal device may switch from the service beam to the candidate beam of the service cell. This switching method may be called beam switching within the service cell.

[0138] The seventh threshold may be a threshold predefined by the protocol, or configured by the network device, or determined by the terminal device itself. The eighth threshold may be a threshold predefined by the protocol, or configured by the network device, or determined by the terminal device itself.

[0139] For event 8, event 8 includes that the link quality corresponding to the service beam is less than or equal to the ninth threshold, and the link quality corresponding to the candidate beam of the non-service cell is greater than the tenth threshold. The tenth threshold may be greater than or equal to the ninth threshold. The link quality corresponding to the service beam is less than or equal to the ninth threshold, which may indicate that the link quality corresponding to the service beam is poor, and the link quality corresponding to the candidate beam of the non-service cell is greater than the tenth threshold, which may indicate that the link quality corresponding to the candidate beam of the non-service cell is better. When the link quality corresponding to the service beam is poor and the link quality corresponding to the candidate beam of the non-service cell is better, the terminal device may send reporting information to the network device, so that the network device may select a suitable service beam for the terminal device based on the reporting information. For example, the network device may configure the candidate beam of the non-service cell as the target beam, and the terminal device may switch from the service beam to the candidate beam of the non-service cell. This switching method may be called inter-cell beam switching.

[0140] The ninth threshold may be a threshold predefined by the protocol, or configured by the network device, or determined by the terminal device itself. The tenth threshold may be a threshold predefined by the protocol, or configured by the network device, or determined by the terminal device itself.

[0141] For event 9, event 9 includes a fluctuation degree of the link quality corresponding to the serving beam being greater than or equal to a first range. The fluctuation degree of the link quality corresponding to the serving beam being greater than or equal to the first range may indicate that the link quality corresponding to the serving beam is poor. When the link quality corresponding to the serving beam is poor, the terminal device may send a reporting information to the network device, so that the network device can promptly replace the serving beam for the terminal device based on the reporting information.

[0142] The first range may be a threshold predefined by a protocol, or the first range may be configured by a network device, or the first range may be determined by the terminal device itself.

[0143] There are many ways to express that the degree of fluctuation of the link quality corresponding to the service beam is greater than or equal to the first range, and the embodiments of the present application do not impose specific limitations on this. As an example, taking the number of fluctuations as an example, the degree of fluctuation of the link quality corresponding to the service beam is greater than or equal to the first range can refer to that the number of fluctuations is greater than or equal to the first value, or the fluctuation frequency corresponding to the number of fluctuations is greater than or equal to the second value. The fluctuation frequency can refer to the ratio of the number of fluctuations to the first duration. As another example, taking the fluctuation duration as an example, the degree of fluctuation of the link quality corresponding to the service beam is greater than or equal to the first range can refer to that the fluctuation duration is greater than or equal to the third value. As another example, taking the fluctuation ratio as an example, the degree of fluctuation of the link quality corresponding to the service beam is greater than or equal to the first range can refer to that the fluctuation ratio is greater than or equal to the fourth value.

[0144] For event 10, event 10 includes that the interference of the candidate beam of the serving cell on the terminal device is greater than or equal to the eleventh threshold. In other words, event 10 may include that the value of the interference information corresponding to the second reference signal resource is greater than or equal to the eleventh threshold. The interference of the candidate beam of the serving cell on the terminal device can reflect the link quality corresponding to the serving beam to a certain extent. The greater the interference of the candidate beam of the serving cell on the terminal device, the worse the link quality corresponding to the serving beam. Therefore, the interference of the candidate beam of the serving cell on the terminal device is greater than or equal to the eleventh threshold, which can indicate that the link quality corresponding to the serving beam is poor. When the link quality corresponding to the service beam is poor, the terminal device can send a reporting information to the network device, so that the network device can replace the appropriate service beam for the terminal device to ensure the communication performance of the terminal device.

[0145] The interference information corresponding to the second reference signal resource may be interference information of a signal transmitted on the second reference signal resource to a signal transmitted on the serving beam. The interference information may be an interference ratio, for example, an L1-SINR.

[0146] The eleventh threshold may be a threshold predefined by a protocol, or the eleventh threshold may be configured by a network device, or the eleventh threshold may be determined by the terminal device itself.

[0147] For event 11, event 11 includes that the interference of the candidate beam of the non-service cell to the terminal device is greater than or equal to the twelfth threshold, or in other words, event 11 may include that the value of the interference information corresponding to the third reference signal resource is greater than or equal to the twelfth threshold. The interference of the candidate beam of the non-service cell to the terminal device can reflect the link quality corresponding to the service beam to a certain extent. The greater the interference of the candidate beam of the non-service cell to the terminal device, the worse the link quality corresponding to the service beam. Therefore, the interference of the candidate beam of the non-service cell to the terminal device is greater than or equal to the eleventh threshold, which can indicate that the link quality corresponding to the service beam is poor. When the link quality corresponding to the service beam is poor, the terminal device can send a reporting information to the network device, so that the network device can replace the appropriate service beam for the terminal device to ensure the communication performance of the terminal device.

[0148] The interference information corresponding to the third reference signal resource may be interference information of a signal transmitted on the third reference signal resource to a signal transmitted on the serving beam. The interference information may be an interference ratio, for example, an L1-SINR.

[0149] The twelfth threshold may be a threshold predefined by a protocol, or the twelfth threshold may be configured by a network device, or the twelfth threshold may be determined by the terminal device itself.

[0150] As can be seen from the above description, different first events may correspond to different beam switching. For example, for intra-cell beam switching, the first event may include one or more of the following: event 3, event 5, and event 7. For another example, for inter-cell beam switching, the first event may include one or more of the following: event 4, event 6, and event 8.

[0151] The content of the first event may be agreed upon by the protocol, or may be configured by the network device. In some implementations, the content of the first event may be agreed upon by the protocol, and the specific first event to trigger the reporting information may be indicated by the network device.

[0152] The above-mentioned first events can be used alone or in combination, and this embodiment of the present application does not specifically limit this. For example, the first event can include event 2. For another example, the first event can include event 9. For another example, the first event can include event 2 and event 3. For another example, the first event can include event 3 and event 4.

[0153] The first event is described in detail above, and the specific content of the reported information is described in detail below. The embodiment of the present application does not specifically limit the content of the reported information. For example, the reported information may include the index of the reference signal resource. For another example, the reported information may include the TCI state index corresponding to the reference signal resource. It should be noted that the index of the reference signal resource can also be called the index of the reference signal, that is, in the absence of conflict, the index of the reference signal resource and the index of the reference signal can be replaced with each other. The content of the reported information is illustrated in more detail below with reference to specific examples.

[0154] Example 1

[0155] The reported information may include the index of the reference signal resource. For example, the reported information may include one or more of the following information: the index of the first reference signal resource, the index of the second reference signal resource, and the index of the third reference signal resource. The index of the reference signal resource corresponds to the beam, and the beam information can be uniquely determined by the reference signal resource index. For example, the service beam can be determined by the index of the first reference signal resource, the candidate beam of the service cell can be determined by the index of the second reference signal resource, and the candidate beam of the non-service cell can be determined by the index of the third reference signal resource. By reporting the index of the reference signal resource to the network device, the network device can determine the beam corresponding to the index of the reference signal resource.

[0156] The reported information may include link quality information. For example, the reported information may include one or more of the following: the link quality corresponding to the first reference signal resource, the link quality corresponding to the second reference signal resource, and the link quality corresponding to the third reference signal resource. By reporting the link quality corresponding to the reference signal resource to the network device, the network device can understand the link quality corresponding to each beam, thereby facilitating the selection of an appropriate serving beam for the terminal device.

[0157] In some implementations, the reported information may include one or more of the following information: an index of a first reference signal resource; link quality corresponding to the first reference signal resource; an index of a second reference signal resource; link quality corresponding to the second reference signal resource; an index of a third reference signal resource; link quality corresponding to the third reference signal resource; fluctuation of link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; and an identifier (or index) of a non-serving cell. The identifier of the non-serving cell may be represented by a physical layer identity (PCI).

[0158] The terminal device can send different reporting information for different first events, or in other words, the reporting information can contain content related to the first event. By reporting information related to the first event, the network device can understand the link quality corresponding to different beams, so that it can make accurate beam switching decisions and ensure the communication quality between the terminal device and the network device.

[0159] The following uses Table 1 to illustrate the relationship between the first event and the reported information.

[0160] Table 1: Correspondence between the first event and the reported information

[0161] Referring to Table 1, for event 1 or event 2, since the triggering of the reporting information is related to the link quality corresponding to the serving beam, the terminal device can report information related to the serving beam. For example, the terminal device can send the index of the first reference signal resource and / or the link quality corresponding to the first reference signal resource to the network device.

[0162] For event 3, since the triggering of reporting information is related to the link quality corresponding to the candidate beam of the serving cell and the link quality corresponding to the serving beam, the terminal device can report information related to the candidate beam and / or serving beam of the serving cell. For example, the terminal device can send one or more of the following information to the network device: the index of the first reference signal resource; the link quality corresponding to the first reference signal resource; the index of the second reference signal resource; and the link quality corresponding to the second reference signal resource.

[0163] For event 4, since the triggering of reporting information is related to the link quality corresponding to the candidate beam of the non-serving cell and the link quality corresponding to the serving beam, the terminal device can report information related to the non-serving cell and / or the serving beam. For example, the terminal device can send one or more of the following information to the network device: the index of the first reference signal resource; the link quality corresponding to the first reference signal resource; the index of the third reference signal resource; the identifier of the non-serving cell; and the link quality corresponding to the third reference signal resource.

[0164] For event 5, since the triggering of the reporting information is related to the link quality corresponding to the candidate beam of the serving cell, the terminal device can report information related to the candidate beam of the serving cell. For example, the terminal device can send one or more of the following information to the network device: the index of the second reference signal resource and the link quality corresponding to the second reference signal resource.

[0165] For event 6, since the trigger for reporting information is related to the link quality corresponding to the candidate beam of the non-serving cell, the terminal device can report information related to the non-serving cell. For example, the terminal device can send one or more of the following information to the network device: the index of the third reference signal resource; the identifier of the non-serving cell; and the link quality corresponding to the third reference signal resource.

[0166] For event 7, since the triggering of reporting information is related to the link quality corresponding to the candidate beam of the serving cell and the link quality corresponding to the serving beam, the terminal device can report information related to the candidate beam and / or serving beam of the serving cell. For example, the terminal device can send one or more of the following information to the network device: the index of the first reference signal resource; the link quality corresponding to the first reference signal resource; the index of the second reference signal resource; and the link quality corresponding to the second reference signal resource.

[0167] For event 8, since the triggering of reporting information is related to the link quality corresponding to the candidate beam of the non-serving cell and the link quality corresponding to the serving beam, the terminal device can report information related to the non-serving cell and / or the serving beam. For example, the terminal device can send one or more of the following information to the network device: the index of the first reference signal resource; the link quality corresponding to the first reference signal resource; the index of the third reference signal resource; the identifier of the non-serving cell; and the link quality corresponding to the third reference signal resource.

[0168] For event 9, since the triggering of reporting information is related to the link quality corresponding to the serving beam, the terminal device can report information related to the serving beam. For example, the terminal device can send one or more of the following information to the network device: the index of the first reference signal resource; the link quality corresponding to the first reference signal resource; and the degree of fluctuation of the link quality corresponding to the first reference signal resource.

[0169] For event 10, since the triggering of the reported information is related to the candidate beam of the serving cell, the terminal device can report information related to the candidate beam of the serving cell. For example, the terminal device can send one or more of the following information to the network device: the index of the second reference signal resource; the link quality corresponding to the second reference signal resource; the interference information corresponding to the second reference signal resource. The interference information corresponding to the second reference signal resource can be understood as the interference of the candidate beam of the serving cell to the terminal device, or the interference of the candidate beam of the serving cell to the serving beam. The above-mentioned interference information may include an interference ratio. For example, the interference information corresponding to the second reference signal resource may be the interference ratio of the candidate beam of the serving cell to the serving beam. The interference ratio may, for example, include L1-SINR.

[0170] For event 11, since the triggering of the reported information is related to the candidate beam of the non-service cell, the terminal device can report information related to the candidate beam of the non-service cell. For example, the terminal device can send one or more of the following information to the network device: the index of the third reference signal resource; the link quality corresponding to the third reference signal resource; the interference information corresponding to the third reference signal resource. The interference information corresponding to the third reference signal resource can be understood as the interference of the candidate beam of the non-service cell to the terminal device, or the interference of the candidate beam of the non-service cell to the service beam. The above-mentioned interference information may include an interference ratio. For example, the interference information corresponding to the third reference signal resource may be the interference ratio of the candidate beam of the non-service cell to the service beam. The interference ratio may, for example, include L1-SINR.

[0171] If the terminal device sends reporting information in the manner described in Example 1, the network device may send first information to the terminal device, where the first information indicates a target TCI state. The terminal device may perform uplink transmission based on the target TCI state. The index of the reference signal resource reported by the terminal device may be associated with a TCI state. The association between the TCI state and the index of the reference signal resource may be implemented through RRC configuration. Based on this association, the network device may determine the target TCI state.

[0172] There are various ways for a network device to indicate the target TCI state to a terminal device, which are not specifically limited in the embodiments of the present application. The following describes the methods for indicating the target TCI state using STRP as an example. For example, the network device can configure the target TCI state via RRC. For another example, the network device can activate the target TCI state via MAC CE. For another example, the network device can dynamically indicate the target TCI state via DCI.

[0173] The target TCI state may include one of the following: an index of a first reference signal resource, an index of a second reference signal resource, and an index of a third reference signal resource. For example, the target TCI state may include an index of a first reference signal resource, and the index of the first reference signal resource may be sent by a terminal device to a network device, or may be determined by the network device based on the reporting information sent by the terminal device. For another example, the target TCI state may include an index of a second reference signal resource, and the index of the second reference signal resource may be sent by a terminal device to a network device, or may be determined by the network device based on the reporting information sent by the terminal device. For another example, the target TCI state may include an index of a third reference signal resource, and the index of the third reference signal resource may be sent by a terminal device to a network device, or may be determined by the network device based on the reporting information sent by the terminal device. The terminal device may determine the beam information to be used based on the reference signal resource index included in the target TCI state.

[0174] In some implementations, the target TCI state may be associated with a first timing advance (TA). For example, the target TCI state may include the first TA. For another example, the target TCI state has a corresponding relationship with the first TA. The target TCI state may be an uplink TCI state or a joint TCI state. The network device may indicate the first TA to the terminal device through the target TCI state, thereby saving signaling overhead. For example, the target TCI state may be associated with an uplink timing advance group (TAG), and the uplink TAG is associated with the first TA. Therefore, the target TCI state is associated with the first TA. After the target TCI state takes effect, the terminal device may perform uplink synchronization based on the first TA, or in other words, the terminal device may perform uplink transmission based on the first TA. The target TCI state taking effect can be understood as that after the terminal device receives the target TCI state indicated by the network device, it may not be able to use the state immediately, and it needs to wait until the target TCI state takes effect before it can be used. For example, after the network device indicates the target TCI state to the terminal device, the terminal device can perform uplink synchronization based on the first TA some time later.

[0175] In some implementations, the target TCI may be associated with a first uplink power control parameter. For example, the target TCI state may include the first uplink power control parameter. For another example, the target TCI state has a corresponding relationship with the first uplink power control parameter. The target TCI state may be an uplink TCI state or a joint TCI state. The network device may indicate the first uplink power control parameter to the terminal device through the target TCI, thereby saving signaling overhead. The terminal device may perform uplink transmission based on the first uplink power control parameter, such as the terminal device may perform uplink power control of an uplink signal or channel based on the first uplink power control parameter. The uplink signal or channel includes one or more of the following: PUSCH, PUCCH and SRS. For example, the terminal device may determine the uplink transmit power based on the first uplink power control parameter, and send the uplink signal or uplink channel according to the uplink transmit power.

[0176] Uplink power control parameters may include one or more of the following: P0, alpha (α), closed loop power control index (CLI), and path loss reference signal (PL RS). P0 is the open loop receiving end power target value, and α is the partial path loss compensation factor.

[0177] For the transmission of downlink signals and channels, the terminal device can measure the downlink signals and channels based on the CSI configuration information and obtain multiple sets of CSI. For example, the terminal device can measure multiple beams to obtain multiple sets of CSI information, with one set of CSI corresponding to one beam. A set of CSI information can include a precoding matrix indicator (PMI), a rank indicator (RI), and channel quality information (CQL). ​​The terminal device can send the measured CSI to the network device, and the network device can precode the downlink signal or channel based on the CSI (such as PMI, RI, CQI).

[0178] In some implementations, the reporting information may include an index of a target reference signal resource, and the target reference signal resource is associated with the target CSI. The index of the target reference signal resource may be any reference signal resource index in the reporting information. For example, the index of the target reference signal resource may be one of the index of the first reference signal resource, the index of the second reference signal resource, and the index of the third reference signal resource. For another example, the index of the target reference signal resource may be an index of other reference signal resources other than the index of the first reference signal resource, the index of the second reference signal resource, and the index of the third reference signal resource. The index of the target reference signal resource may include CRI and / or SSBRI. The target reference signal resource may include SSB resources and / or CSI-RS resources. The target CSI is used for downlink transmission between the network device and the terminal device, that is, by associating the target reference signal resource with the target CSI, the network device can perform downlink transmission based on the target CSI without the terminal device sending the target CSI again, which is beneficial to reducing signaling overhead. The target CSI may include one or more of the following information: PMI, RI, and CQI. The network device may precode the downlink signal or channel based on the above information included in the target CSI.

[0179] If the target CSI is determined based on the measurement of the target CSI-RS, the association of the target reference signal resource with the target CSI may include: the target reference signal and the target CSI-RS have a QCL relationship. Taking the reported reference signal resource index as an SSB index as an example, the reported SSB may be the QCL source of the CSI-RS used for CSI measurement. Taking the reported reference signal resource index as a CSI-RS index as an example, the reported CSI-RS may have the same QCL source as the CSI-RS used for CSI measurement, and the QCL source may be, for example, a certain SSB, or the reported CSI-RS is the QCL source of the CSI-RS used for CSI measurement.

[0180] After the network device receives the reporting information sent by the terminal device, it can determine the target reference signal based on the index of the target reference signal resource in the reporting information, determine the target CSI-RS having a QCL relationship with the target reference signal, and determine the target CSI corresponding to the target CSI-RS.

[0181] Example 2

[0182] In some implementations, the reported information may include one or more of the following: a TCI state index corresponding to the first reference signal resource; link quality corresponding to the first reference signal resource; a TCI state index corresponding to the second reference signal resource; link quality corresponding to the second reference signal resource; a TCI state index corresponding to the third reference signal resource; link quality corresponding to the third reference signal resource; fluctuation in link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; and interference information corresponding to the third reference signal resource. By reporting the TCI state index, the network device need not indicate the complete TCI state to the terminal device, thereby saving signaling overhead and reducing handover latency.

[0183] For different first events, the terminal device can send different reporting information, or in other words, the content contained in the reporting information is related to the first event. The following is an example of the relationship between the first event and the reporting information in conjunction with Table 2. It should be noted that if the terminal device reports the TCI status index to the network device, since the TCI status index includes the PCI, the terminal device does not need to report the PCI of the non-serving cell to save signaling overhead.

[0184] Referring to Table 2, for event 1 or event 2, since the triggering of the reporting information is related to the link quality corresponding to the serving beam, the terminal device can report information related to the serving beam. For example, the terminal device can send the TCI state index corresponding to the first reference signal resource and / or the link quality corresponding to the first reference signal resource to the network device.

[0185] For event 3, since the triggering of the reporting information is related to the link quality corresponding to the candidate beam of the serving cell and the link quality corresponding to the serving beam, the terminal device can report information related to the candidate beam and / or serving beam of the serving cell. For example, the terminal device can send one or more of the following information to the network device: the TCI state index corresponding to the first reference signal resource; the link quality corresponding to the first reference signal resource; the TCI state index corresponding to the second reference signal resource; and the link quality corresponding to the second reference signal resource.

[0186] For event 4, since the triggering of the reporting information is related to the link quality corresponding to the candidate beam of the non-serving cell and the link quality corresponding to the serving beam, the terminal device can report information related to the non-serving cell and / or the serving beam. For example, the terminal device can send one or more of the following information to the network device: the TCI state index corresponding to the first reference signal resource; the link quality corresponding to the first reference signal resource; the TCI state index corresponding to the third reference signal resource; and the link quality corresponding to the third reference signal resource.

[0187] For event 5, since the triggering of the reporting information is related to the link quality corresponding to the candidate beam of the serving cell, the terminal device can report information related to the candidate beam of the serving cell. For example, the terminal device can send one or more of the following information to the network device: the TCI state index corresponding to the second reference signal resource and the link quality corresponding to the second reference signal resource.

[0188] Table 2: Correspondence between the first event and the reported information (based on TCI status)

[0189] For event 6, since the triggering of the reporting information is related to the link quality corresponding to the candidate beam of the non-serving cell, the terminal device can report information related to the non-serving cell. For example, the terminal device can send one or more of the following information to the network device: the TCI state index corresponding to the third reference signal resource; and the link quality corresponding to the third reference signal resource.

[0190] For event 7, since the triggering of the reporting information is related to the link quality corresponding to the candidate beam of the serving cell and the link quality corresponding to the serving beam, the terminal device can report information related to the candidate beam and / or serving beam of the serving cell. For example, the terminal device can send one or more of the following information to the network device: the TCI state index corresponding to the first reference signal resource; the link quality corresponding to the first reference signal resource; the TCI state index corresponding to the second reference signal resource; and the link quality corresponding to the second reference signal resource.

[0191] For event 8, since the triggering of reporting information is related to the link quality corresponding to the candidate beam of the non-serving cell and the link quality corresponding to the serving beam, the terminal device can report information related to the non-serving cell and / or the serving beam. For example, the terminal device can send one or more of the following information to the network device: the TCI state index corresponding to the first reference signal resource; the link quality corresponding to the first reference signal resource; the TCI state index corresponding to the third reference signal resource; and the link quality corresponding to the third reference signal resource.

[0192] For event 9, since the triggering of reporting information is related to the link quality corresponding to the serving beam, the terminal device can report information related to the serving beam. For example, the terminal device can send one or more of the following information to the network device: the TCI state index corresponding to the first reference signal resource; the link quality corresponding to the first reference signal resource; and the degree of fluctuation of the link quality corresponding to the first reference signal resource.

[0193] For event 10, since the triggering of the reported information is related to the candidate beam of the serving cell, the terminal device can report information related to the candidate beam of the serving cell. For example, the terminal device can send one or more of the following information to the network device: the TCI state index corresponding to the second reference signal resource; the link quality corresponding to the second reference signal resource; the interference information corresponding to the second reference signal resource. The interference information corresponding to the second reference signal resource can be understood as the interference of the candidate beam of the serving cell to the terminal device, or the interference of the candidate beam of the serving cell to the serving beam. The above-mentioned interference information may include an interference ratio. For example, the interference information corresponding to the second reference signal resource may be the interference ratio of the candidate beam of the serving cell to the serving beam. The interference ratio may, for example, include L1-SINR.

[0194] For event 11, since the triggering of the reported information is related to the candidate beam of the non-service cell, the terminal device can report information related to the candidate beam of the non-service cell. For example, the terminal device can send one or more of the following information to the network device: the TCI state index corresponding to the third reference signal resource; the link quality corresponding to the third reference signal resource; the interference information corresponding to the third reference signal resource. The interference information corresponding to the third reference signal resource can be understood as the interference of the candidate beam of the non-service cell to the terminal device, or the interference of the candidate beam of the non-service cell to the service beam. The above-mentioned interference information may include an interference ratio. For example, the interference information corresponding to the third reference signal resource may be the interference ratio of the candidate beam of the non-service cell to the service beam. The interference ratio may, for example, include L1-SINR.

[0195] The above-mentioned TCI status index can also be called TCI status ID, that is, the TCI status index and TCI status ID can be replaced with each other.

[0196] The TCI state index corresponding to the above-mentioned first reference signal resource can be understood as the TCI state index corresponding to the serving beam. The TCI state index corresponding to the above-mentioned second reference signal resource can be understood as the TCI state index corresponding to the candidate beam of the serving cell. The TCI state index corresponding to the above-mentioned third reference signal resource can be understood as the TCI state index corresponding to the candidate beam of the non-serving cell. For the convenience of description, the TCI state index corresponding to the first reference signal resource is referred to as the first TCI state index, the TCI state index corresponding to the second reference signal resource is referred to as the second TCI state index, and the TCI state index corresponding to the third reference signal resource is referred to as the third TCI state index.

[0197] If the terminal device sends the reporting information to the network device in the manner of Example 2, in order to save signaling overhead, the network device may only confirm or not confirm the TCI status indicated in the reporting information, without sending the TCI status to the terminal device. Whether the network device confirms the TCI status indicated in the reporting information is not specifically limited in the embodiments of the present application. For example, the network device may confirm the TCI status indicated in the reporting information so that the terminal device can perform uplink transmission based on the confirmed TCI status. For another example, the network device may not confirm the TCI status indicated in the reporting information, and the terminal device may determine on its own whether the TCI status indicated in the reporting information is a valid TCI status, thereby further saving signaling overhead. The following introduces these two methods respectively.

[0198] For example, if the network device can confirm the TCI state indicated in the reported information, the network device can send second information to the terminal device. This second information can be used to confirm that the target TCI state is a valid TCI state. The target TCI state corresponds to a TCI state index in the reported information.

[0199] As an example, if the reported information includes a first TCI state index, and the first TCI state index is associated with the first TCI state, the network device can confirm that the first TCI state is a valid TCI state through the second information. If the network device confirms that the first TCI state is a valid TCI state, the terminal device can perform uplink transmission based on the first TCI state.

[0200] As another example, if the reported information includes a second TCI state index, and the second TCI state index is associated with the second TCI state, the network device may confirm, based on the second information, that the second TCI state is a valid TCI state. If the network device confirms that the second TCI state is a valid TCI state, the terminal device may perform uplink transmission based on the second TCI state.

[0201] As another example, if the reported information includes a third TCI state index, and the third TCI state index is associated with the third TCI state, the network device may confirm, through the second information, that the third TCI state is a valid TCI state. If the network device confirms that the third TCI state is a valid TCI state, the terminal device may perform uplink transmission based on the third TCI state.

[0202] The embodiment of the present application does not specifically limit the second information. The second information can be any downlink information, for example, the second information can be DCI. The network device can confirm the TCI state indicated by the terminal device through the hybrid automatic repeat request (HARQ) process and the new data indicator (NDI) in the DCI. The HARQ process can be indicated by a HARQ process identifier (HARQ process ID), and the HARQ process identifier can uniquely indicate a HARQ process.

[0203] Typically, each HARQ process corresponds to an NDI value, and the NDI value uses one bit to indicate whether the scheduled data is a new transmission or a retransmission. If the NDI value of a HARQ process has changed compared to the previous one, that is, the NDI has been toggled, it means that the current transmission is a new transport block (TB). If the NDI value is the same as before, that is, the NDI has not been toggled, it means that the current transmission is a retransmission of the same TB. The embodiment of the present application can confirm the TCI status indicated by the terminal device by the reversal of the NDI value.

[0204] For example, the uplink resources carrying the reporting information are scheduled based on the first DCI, the first DCI includes the first HARQ process identifier and the first NDI corresponding to the first HARQ process identifier, the second information is the second DCI, the second DCI includes the first HARQ process and the second NDI corresponding to the first HARQ process, and the value of the first NDI is opposite to the value of the second NDI.

[0205] The network device may send a first DCI to the terminal device, where the first DCI is used to schedule uplink resources, and the uplink resources are used to carry reporting information. The terminal device may send reporting information to the network device based on the uplink resources. If the network device needs to confirm the TCI state indicated in the reporting information, the network device may send a second DCI to the terminal device. The HARQ process included in the second DCI is the same as the HARQ process included in the first DCI, and the value of the NDI included in the second DCI is opposite to the value of the NDI included in the first DCI.

[0206] After the terminal device receives the second DCI, if the value of NDI in the second DCI is opposite to the value of NDI in the first DCI, the terminal device can consider that the network device has confirmed the TCI status indicated in the reported information, and the terminal device can use the TCI status for uplink transmission. The method of confirming the TCI status indicated in the reported information through the second DCI is relatively simple to implement.

[0207] Taking the case where the network device does not confirm the TCI state indicated in the reporting information as an example, if the reporting information includes the TCI state index of the target TCI state, the terminal device can determine the effective time of the target TCI state by itself. There are many ways to determine the effective time of the target TCI state, and the embodiments of the present application do not specifically limit this. As an example, the terminal device can use the transmission time of the reporting information as the effective time of the target TCI state. As another example, the effective time of the target TCI state can be determined based on the transmission time of the reporting information and the third time duration. For example, the effective time of the target TCI state can be determined based on the sum of the transmission time of the reporting information and the third time duration. The transmission time of the reporting information can be understood as the moment when the terminal device sends the reporting information to the network device. The terminal device can consider that after the third time duration has passed after the reporting information is sent to the network device, the target TCI state is a valid TCI state.

[0208] The third duration may be predefined in the protocol, or may be configured by the network device to the terminal device, or may be determined by the terminal device itself. The third duration may be, for example, 3ms or 10ms.

[0209] In some implementations, the target TCI state may be associated with the first TA. For example, the target TCI state may include the first TA. For another example, the target TCI state has a corresponding relationship with the first TA. The target TCI state may be an uplink TCI state or a joint TCI state. By associating the target TCI state with the first TA, signaling overhead may be saved. For example, the target TCI state may be associated with an uplink TAG, which is associated with the first TA. Therefore, the target TCI state is associated with the first TA. After the target TCI state is enabled, the terminal device may perform uplink synchronization based on the first TA, or in other words, the terminal device may perform uplink transmission based on the first TA.

[0210] The target TCI state activation may mean that the target TCI state is effective, or the target TCI state is the indicated TCI state.

[0211] In some implementations, the target TCI may be associated with a first uplink power control parameter. For example, the target TCI state may include the first uplink power control parameter. For another example, the target TCI state has a corresponding relationship with the first uplink power control parameter. The target TCI state may be an uplink TCI state or a joint TCI state. By associating the target TCI with the first uplink power control parameter, signaling overhead can be saved. After the target TCI state is enabled, the terminal device may perform uplink transmission based on the first uplink power control parameter, such as the terminal device may perform uplink power control of an uplink signal or channel based on the first uplink power control parameter. The uplink signal or channel includes one or more of the following: PUSCH, PUCCH and SRS. For example, the terminal device may determine the uplink transmit power based on the first uplink power control parameter, and send the uplink signal or uplink channel according to the uplink transmit power.

[0212] The uplink power control parameters may include one or more of the following: P0, alpha (α), CLI, and PLRS. P0 is the open-loop receiving end power target value, and α is the partial path loss compensation factor.

[0213] For downlink signal and channel transmission, the terminal device can measure the downlink signal and channel based on the CSI configuration information and obtain multiple sets of CSI. For example, the terminal device can measure multiple beams to obtain multiple sets of CSI information, with one set of CSI corresponding to each beam. A set of CSI information can include PMI, RI, and CQI. The terminal device can send the measured CSI to the network device, and the network device can precode the downlink signal or channel based on the CSI (such as PMI, RI, and CQI).

[0214] In some implementations, the reported information may include a TCI state index for the target TCI state, where the target TCI state is associated with the target CSI. The target CSI is used for downlink transmission between the network device and the terminal device. That is, by associating the target reference signal resource with the target CSI, the network device can perform downlink transmission based on the target CSI without the terminal device having to separately send the target CSI, which helps reduce signaling overhead. The target CSI may include one or more of the following information: PMI, RI, and CQI. The network device may precode the downlink signal or channel based on the above information included in the target CSI.

[0215] If the target CSI is determined based on a measurement of a target CSI-RS, the association between the target TCI state and the target CSI may include one or more of the following: the target TCI state includes the target CSI-RS; and the reference signal included in the target TCI state has a QCL relationship with the target CSI-RS. For example, the reference signal included in the target TCI state has the same QCL source as the target CSI-RS, or the reference signal included in the target TCI state (e.g., SSB) is the QCL source of the target CSI-RS.

[0216] There are various ways to carry the reported information, which are not specifically limited in the embodiments of the present application. The reported information can be carried in any type of uplink information. As an example, the reported information can be carried in uplink control information. For example, the reported information can be carried in uplink control information (UCI). As another example, the reported information can be carried in MAC layer control information. For example, the reported information can be carried in a MAC CE.

[0217] In some implementations, before sending the reporting information to the network device, the terminal device may send first capability information to the network device. By sending the first capability information to the network device, the network device can configure parameters related to beam reporting for the terminal device based on the capabilities of the terminal device, so that the parameters match the capabilities of the terminal device.

[0218] The first capability information may include various contents, which are not specifically limited in the embodiments of the present application. The first capability information may be related to one or more of the following information: measurement capability, reporting capability, and capability for event-triggered beamforming. The first capability information is described in detail below.

[0219] The first capability information is used to indicate one or more of the following: whether the terminal device supports event-triggered beam reporting; the type of events supported by the terminal device for triggering beam reporting; the measurement capability of the terminal device; and the reporting capability of the terminal device.

[0220] If the terminal device supports event-triggered beam reporting, the network device can configure corresponding parameters for the terminal device so that the terminal device can perform event-triggered beam reporting based on the parameters.

[0221] If the terminal device supports event-triggered beam reporting, the terminal device can indicate to the network device the types of events supported for triggering beam reporting. For example, the terminal device can indicate to the network device which of the above 11 events it supports.

[0222] The measurement capabilities of a terminal device may include multiple types. As an example, the measurement capability may include the measurement capability of the terminal device for measurement resources. For example, the measurement capability may include which measurement resources the terminal device can support measurement for. Taking CC as an example, the measurement capability may include the number of resources that the terminal device can measure on one or more carriers, or in other words, the measurement capability may include how many measurement resources the terminal device supports measurement on one carrier or all carriers. As another example, the measurement capability may include whether the terminal device supports downlink measurement between cells. The downlink measurement is used to determine whether an inter-cell beam management event occurs. For example, the measurement capability may include whether the terminal device supports downlink measurement for serving cells and non-serving cells.

[0223] The reporting capability can be used to indicate the method for requesting uplink resources, which are used to carry reporting information. In other words, the reporting capability can be used to indicate which method the terminal device supports for requesting uplink resources to carry reporting information. The request method may include a method for requesting resources based on a scheduling request (SR).

[0224] The network device may send configuration information to the terminal device, where the configuration information is used to configure parameters related to beam reporting. This configuration information may be related to the first capability information, that is, the network device may determine the configuration information based on the first capability information. In some implementations, the configuration information may be used to configure one or more of the following: resources required to monitor the first event; the type of the first event; the content of the reported information; and uplink resources used to carry the reported information. Each of these is described below.

[0225] The resources required for monitoring the first event may include one or more of the following: time domain resources, frequency domain resources, and beams. The beams may include the serving beam described above, candidate beams of the serving cell, and candidate beams of the non-serving cell.

[0226] The type of the first event may include the 11 events described above. The network device may configure the type of the first event for the terminal device based on the event types supported by the terminal device in the first capability information. If the terminal device supports multiple event types, the network device may directly configure the multiple event types for the terminal device, or may configure some of the multiple event types for the terminal device. In some implementations, after configuring the type of the first event for the terminal device, the network device may also configure event-related thresholds for the terminal device.

[0227] The content of the reported information may be related to the type of the first event. Taking Event 2 as an example, if the network device configures the terminal device to measure Event 2, the content of the reported information is related to Event 2. For example, if the terminal device determines that the link quality corresponding to the serving beam is less than or equal to the fourth threshold, the terminal device determines that Event 2 has occurred. The terminal device may send the measurement result corresponding to Event 2 to the network device, such as the link quality corresponding to the serving beam.

[0228] Taking event 9 as an example, if the network device configures the terminal device to measure event 9, the content of the reported information is related to event 9. The network device can configure a first range corresponding to event 9 for the terminal device. If the terminal device determines that the fluctuation degree of the link quality corresponding to the serving beam is greater than or equal to the first range, the terminal device determines that event 9 has occurred. The terminal device can send the measurement results corresponding to event 9 to the network device, such as the number of fluctuations and / or the fluctuation ratio.

[0229] If the network device configures an uplink resource for the terminal device to carry the reporting information, the terminal device may use the uplink resource to send the reporting information. The network device may configure the corresponding uplink resource for the terminal device according to the reporting capability of the terminal device indicated in the first capability information. For example, if the terminal device supports requesting uplink resources based on SR, the network device may configure the SR timing for the terminal device so that the terminal device can obtain uplink resources through SR. For another example, if the terminal device does not support requesting uplink resources based on SR, the network device may configure PUCCH and / or PUSCH for the terminal device.

[0230] The terminal device may send the reporting information based on the first uplink resource, or in other words, the reporting information may be carried based on the first uplink resource, or in other words, the terminal device sends the reporting information through the first uplink resource. Considering the randomness of the occurrence of the first event, the network device does not know when the first event will occur when configuring uplink resources for the terminal device. Therefore, the network device may not pre-configure uplink resources, such as PUCCH resources or PUSCH resources, to avoid wasting resources.

[0231] There are many ways to determine the first uplink resource, and the embodiments of the present application do not specifically limit this. The first uplink resource can be obtained by the terminal device by requesting the network device, or the first uplink resource can be determined by the terminal device itself. As an example, the first uplink resource can be determined based on the SR sent by the terminal device. For example, after the first event occurs, the terminal device can send an SR to the network device at the scheduling request time to request uplink resources. After the network device confirms the SR, it can allocate PUSCH resources to the terminal device through DCI. The terminal device can use PUSCH resources to send reporting information. The SR timing can be periodic, and the SR period can be configured according to actual needs.

[0232] As another example, the first uplink resource may be an uplink resource in the first time period after the first event occurs. After the first event occurs, the terminal device may determine whether there are uplink resources in the next first time period. If there are uplink resources, the terminal device may use the uplink resources to send reporting information without sending an SR to request resources, which is beneficial to reducing signaling overhead and saving resources. The first uplink resource may be any type of uplink resource. For example, the first uplink resource may be a PUCCH resource, or the first uplink resource is used to carry PUCCH. PUCCH may be a PUCCH that periodically feeds back CSI. For another example, the first uplink resource may be a PUSCH resource, or the first uplink resource is used to carry PUSCH. PUSCH may be a dynamic PUSCH scheduled by DCI, or a PUSCH activated by DCI (such as type 2 configured grant (CG)-PUSCH), or a PUSCH configured by RRC (such as type 1 CG-PUSCH).

[0233] The first time period may be a time period predefined by a protocol, or the first time period may be configured by a network device, or the first time period may be determined by the terminal device itself.

[0234] It should be noted that the TCI state involved in the embodiments of the present application may be a unified TCI state. For example, the index of the TCI state reported by the terminal device to the network device may be an index of the unified TCI state. For another example, the target TCI state indicated by the network device to the terminal device may be a unified TCI state. The above-mentioned unified TCI state may include one or more of the following: uplink TCI state, downlink TCI state, and combined TCI state. If the unified TCI state is used for uplink transmission, the unified TCI state may include the uplink TCI state and / or the combined TCI state.

[0235] It should be noted that the reference signal resources mentioned in the embodiments of the present application can also be referred to as spatial filters or beams. In the absence of conflict, reference signal resources, spatial filters, and beams can be used interchangeably. For example, the first reference signal resource can be referred to as the first spatial filter or the serving beam of the terminal device. For another example, the second reference signal resource can be referred to as the second spatial filter or the candidate beam of the serving cell of the terminal device. For another example, the third reference signal resource can be referred to as the third spatial filter or the candidate beam of the non-serving cell of the terminal device.

[0236] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 6 , and the device embodiment of the present application is described in detail below in conjunction with Figures 7 to 8 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment, and therefore, for portions not described in detail, reference can be made to the above method embodiment.

[0237] Figure 7 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. The terminal device 700 shown in Figure 7 may include a first communication unit 710. The first communication unit 710 may be configured to transmit reporting information to a network device, the reporting information being triggered based on a first event and the reporting information being related to a reference signal resource.

[0238] In some implementations, the first event is associated with one or more of the following: link quality corresponding to the first reference signal resource; link quality corresponding to the second reference signal resource; link quality corresponding to the third reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; wherein the first reference signal resource and the second reference signal resource are reference signal resources of the service cell of the terminal device, the first reference signal resource is the reference signal resource currently used by the terminal device, and the third reference signal resource is the reference signal resource of the non-service cell of the terminal device.

[0239] In some implementations, the first event is determined based on link quality corresponding to the first reference signal resource, including: the first event is determined based on a degree of fluctuation of the link quality corresponding to the first reference signal resource.

[0240] In some implementations, the degree of fluctuation of the link quality corresponding to the first reference signal resource is determined based on one or more of the following: the number of times the link quality corresponding to the first reference signal resource drops from above a first threshold to below or equal to the first threshold within a first time period; and the proportion of the time during which the link quality corresponding to the first reference signal resource is below the second threshold within a second time period.

[0241] In some implementations, the first event includes one or more of the following: the link quality corresponding to the first reference signal resource is greater than or equal to a third threshold; the link quality corresponding to the first reference signal resource is less than or equal to a fourth threshold; the link quality corresponding to the second reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and a first offset; the link quality corresponding to the third reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and a second offset; the link quality corresponding to the second reference signal resource is greater than or equal to a fifth threshold; the link quality corresponding to the third reference signal resource is greater than or equal to a sixth threshold; the link quality corresponding to the first reference signal resource is less than or equal to a seventh threshold, and the link quality corresponding to the second reference signal resource is greater than an eighth threshold; the link quality corresponding to the first reference signal resource is less than or equal to a ninth threshold, and the link quality corresponding to the third reference signal resource is greater than a tenth threshold; the fluctuation degree of the link quality corresponding to the first reference signal resource is greater than or equal to a first range; the value of the interference information corresponding to the second reference signal resource is greater than or equal to an eleventh threshold; and the value of the interference information corresponding to the third reference signal resource is greater than or equal to a twelfth threshold.

[0242] In some implementations, the link quality is determined based on one or more of the following: L1-RSRP, L1-RSRQ, L1-RSSI, L1-SINR, SNR, BLER of PDCCH.

[0243] In some implementations, the reported information includes one or more of the following information: an index of a first reference signal resource; link quality corresponding to the first reference signal resource; an index of a second reference signal resource; link quality corresponding to the second reference signal resource; an index of a third reference signal resource; link quality corresponding to the third reference signal resource; degree of fluctuation of link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; and identification of a non-service cell.

[0244] In some implementations, the terminal device 700 also includes: a second communication unit, used to receive first information sent by a network device, the first information is used to indicate a target TCI state, and the target TCI state includes one of the following: an index of a first reference signal resource; an index of a second reference signal resource; an index of a third reference signal resource.

[0245] In some implementations, the target TCI state is associated with a first TA and / or a first uplink power control parameter, and the terminal device 700 further includes: a third communication unit, configured to perform uplink transmission based on the first TA and / or the first uplink power control parameter after the target TCI state takes effect.

[0246] In some implementations, the reporting information includes an index of a target reference signal resource, where the target reference signal resource is associated with a target CSI.

[0247] In some implementations, the target CSI is determined based on measurement of a target CSI-RS, and associating the target reference signal resource with the target CSI includes: the target reference signal and the target CSI-RS have a QCL relationship.

[0248] In some implementations, the target CSI is used for downlink transmission between the network device and the terminal device.

[0249] In some implementations, the reported information includes one or more of the following information: a TCI state index corresponding to the first reference signal resource; a link quality corresponding to the first reference signal resource; a TCI state index corresponding to the second reference signal resource; a link quality corresponding to the second reference signal resource; a TCI state index corresponding to the third reference signal resource; a link quality corresponding to the third reference signal resource; a degree of fluctuation in the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; and interference information corresponding to the third reference signal resource.

[0250] In some implementations, the terminal device 700 also includes: a fourth communication unit, used to receive second information sent by the network device, the second information is used to confirm that the target TCI state is a valid TCI state, and the target TCI state corresponds to a TCI state index in the reported information.

[0251] In some implementations, the uplink resources carrying the reported information are scheduled based on a first DCI, where the first DCI includes a first HARQ process identifier and a first NDI corresponding to the first HARQ process identifier; the second information is a second DCI, where the second DCI includes the first HARQ process and a second NDI corresponding to the first HARQ process; and the value of the second NDI is opposite to that of the first NDI.

[0252] In some implementations, the reporting information includes a TCI state index of a target TCI state, and the effective time of the target TCI state is determined based on the transmission time of the reporting information and a third duration.

[0253] In some implementations, the target TCI state is associated with a first TA and / or a first uplink power control parameter.

[0254] In some implementations, the terminal device 700 further includes: a fifth communication unit, configured to perform uplink transmission based on the first TA and / or the first uplink power control parameter after the target TCI state takes effect.

[0255] In some implementations, the reporting information includes a TCI state index of a target TCI state, where the target TCI state is associated with a target CSI.

[0256] In some implementations, the target CSI is determined based on measurement of a target CSI-RS, and the association between the target TCI state and the target CSI includes one or more of the following: the target TCI state includes the target CSI-RS; the reference signal included in the target TCI state has a QCL relationship with the target CSI-RS.

[0257] In some implementations, the target CSI is used for downlink transmission between the network device and the terminal device.

[0258] In some implementations, the reporting information is carried in UCI or MAC CE.

[0259] In some implementations, the terminal device 700 also includes: a sixth communication unit, used to send first capability information to the network device before the terminal device sends reporting information to the network device, the first capability information being used to indicate one or more of the following: whether the terminal device supports event-triggered beam reporting; the type of event supported by the terminal device for triggering beam reporting; the measurement capability of the terminal device; and the reporting capability of the terminal device, the reporting capability being used to indicate a method for requesting uplink resources, and the uplink resources being used to carry the reporting information.

[0260] In some implementations, the measurement capability of the terminal device includes one or more of the following: the number of resources that the terminal device can measure on one or more carriers; and whether the terminal device supports downlink measurement between cells.

[0261] In some implementations, the terminal device 700 also includes: a seventh communication unit, used to receive configuration information sent by the network device before the terminal device sends reporting information to the network device, and the configuration information is used to configure one or more of the following: resources required to monitor the first event; the type of the first event; the content of the reporting information; and uplink resources used to carry the reporting information.

[0262] In some implementations, the reported information is carried based on a first uplink resource, and the first uplink resource is determined based on the SR sent by the terminal device.

[0263] In some implementations, the reported information is carried based on a first uplink resource, where the first uplink resource is an uplink resource within a first time period after the first event occurs.

[0264] In some implementations, the first uplink resource is used to carry one of the following: DCI-scheduled PUSCH; type 2 CG-PUSCH; type 1 CG-PUSCH; PUCCH.

[0265] In some implementations, the TCI state determined based on the reported information is a unified TCI state.

[0266] Figure 8 is a schematic diagram of the structure of a network device according to an embodiment of the present application. The network device 800 shown in Figure 8 may include a first communication unit 810. The first communication unit 810 is configured to receive reporting information sent by a terminal device, the reporting information being triggered based on a first event and being related to reference signal resources.

[0267] In some implementations, the first event is associated with one or more of the following: link quality corresponding to the first reference signal resource; link quality corresponding to the second reference signal resource; link quality corresponding to the third reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; wherein the first reference signal resource and the second reference signal resource are reference signal resources of the service cell of the terminal device, the first reference signal resource is the reference signal resource currently used by the terminal device, and the third reference signal resource is the reference signal resource of the non-service cell of the terminal device.

[0268] In some implementations, the first event is determined based on link quality corresponding to the first reference signal resource, including: the first event is determined based on a degree of fluctuation of the link quality corresponding to the first reference signal resource.

[0269] In some implementations, the degree of fluctuation of the link quality corresponding to the first reference signal resource is determined based on one or more of the following: the number of times the link quality corresponding to the first reference signal resource drops from above a first threshold to below or equal to the first threshold within a first time period; and the proportion of the time during which the link quality corresponding to the first reference signal resource is below the second threshold within a second time period.

[0270] In some implementations, the first event includes one or more of the following: the link quality corresponding to the first reference signal resource is greater than or equal to a third threshold; the link quality corresponding to the first reference signal resource is less than or equal to a fourth threshold; the link quality corresponding to the second reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and a first offset; the link quality corresponding to the third reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and a second offset; the link quality corresponding to the second reference signal resource is greater than or equal to a fifth threshold; the link quality corresponding to the third reference signal resource is greater than or equal to a sixth threshold; the link quality corresponding to the first reference signal resource is less than or equal to a seventh threshold, and the link quality corresponding to the second reference signal resource is greater than an eighth threshold; the link quality corresponding to the first reference signal resource is less than or equal to a ninth threshold, and the link quality corresponding to the third reference signal resource is greater than a tenth threshold; the fluctuation degree of the link quality corresponding to the first reference signal resource is greater than or equal to a first range; the value of the interference information corresponding to the second reference signal resource is greater than or equal to an eleventh threshold; and the value of the interference information corresponding to the third reference signal resource is greater than or equal to a twelfth threshold.

[0271] In some implementations, the link quality is determined based on one or more of the following: L1-RSRP, L1-RSRQ, L1-RSSI, L1-SINR, SNR, BLER of PDCCH.

[0272] In some implementations, the reported information includes one or more of the following information: an index of a first reference signal resource; link quality corresponding to the first reference signal resource; an index of a second reference signal resource; link quality corresponding to the second reference signal resource; an index of a third reference signal resource; link quality corresponding to the third reference signal resource; degree of fluctuation of link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; and identification of a non-service cell.

[0273] In some implementations, the network device 800 also includes: a second communication unit, used to send first information to the terminal device, the first information is used to indicate a target TCI state, and the target TCI state includes one of the following: an index of a first reference signal resource; an index of a second reference signal resource; an index of a third reference signal resource.

[0274] In some implementations, the target TCI state is associated with a first TA and / or a first uplink power control parameter, and the first TA and / or the first uplink power control parameter are used for uplink transmission after the target TCI state takes effect.

[0275] In some implementations, the reporting information includes an index of a target reference signal resource, where the target reference signal resource is associated with a target CSI.

[0276] In some implementations, the target CSI is determined based on measurement of a target CSI-RS, and associating the target reference signal resource with the target CSI includes: the target reference signal and the target CSI-RS have a QCL relationship.

[0277] In some implementations, the network device 800 further includes: a third communication unit, configured to perform downlink transmission with the terminal device according to the target CSI.

[0278] In some implementations, the reported information includes one or more of the following information: a TCI state index corresponding to the first reference signal resource; a link quality corresponding to the first reference signal resource; a TCI state index corresponding to the second reference signal resource; a link quality corresponding to the second reference signal resource; a TCI state index corresponding to the third reference signal resource; a link quality corresponding to the third reference signal resource; a degree of fluctuation in the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; and interference information corresponding to the third reference signal resource.

[0279] In some implementations, the network device 800 further includes: a fourth communication unit, configured to send second information to the terminal device, wherein the second information is used to confirm that the target TCI state is a valid TCI state, and the target TCI state corresponds to a TCI state index in the reported information.

[0280] In some implementations, the uplink resources carrying the reported information are scheduled based on a first DCI, where the first DCI includes a first HARQ process identifier and a first NDI corresponding to the first HARQ process identifier; the second information is a second DCI, where the second DCI includes the first HARQ process and a second NDI corresponding to the first HARQ process; and the value of the second NDI is opposite to that of the first NDI.

[0281] In some implementations, the reporting information includes a TCI state index of a target TCI state, and the effective time of the target TCI state is determined based on the transmission time of the reporting information and a third duration.

[0282] In some implementations, the target TCI state is associated with a first TA and / or a first uplink power control parameter.

[0283] In some implementations, the first TA and / or the first uplink power control parameter is used for uplink transmission after the target TCI state takes effect.

[0284] In some implementations, the reporting information includes a TCI state index of a target TCI state, where the target TCI state is associated with a target CSI.

[0285] In some implementations, the target CSI is determined based on measurement of a target CSI-RS, and the association between the target TCI state and the target CSI includes one or more of the following: the target TCI state includes the target CSI-RS; the reference signal included in the target TCI state has a QCL relationship with the target CSI-RS.

[0286] In some implementations, the terminal device 800 further includes: a fifth communication unit, configured to perform downlink transmission with the terminal device according to the target CSI.

[0287] In some implementations, the reporting information is carried in UCI or MAC CE.

[0288] In some implementations, the network device 900 also includes: a sixth communication unit, used to receive first capability information sent by the terminal device before the network device receives the reporting information sent by the terminal device, the first capability information being used to indicate one or more of the following: whether the terminal device supports event-triggered beam reporting; the type of event supported by the terminal device for triggering beam reporting; the measurement capability of the terminal device; and the reporting capability of the terminal device, the reporting capability being used to indicate a method for requesting uplink resources, and the uplink resources being used to carry the reporting information.

[0289] In some implementations, the measurement capability of the terminal device includes one or more of the following: the number of resources that the terminal device can measure on one or more carriers; and whether the terminal device supports downlink measurement between cells.

[0290] In some implementations, the network device 800 includes: a seventh communication unit, used to send configuration information to the terminal device before the network device receives the reporting information sent by the terminal device, and the configuration information is used to configure one or more of the following: resources required to monitor the first event; the type of the first event; the content of the reporting information; and uplink resources used to carry the reporting information.

[0291] In some implementations, the reported information is carried based on a first uplink resource, and the first uplink resource is determined based on the SR sent by the terminal device.

[0292] In some implementations, the reported information is carried based on a first uplink resource, where the first uplink resource is an uplink resource within a first time period after the first event occurs.

[0293] In some implementations, the first uplink resource is used to carry one of the following: DCI-scheduled PUSCH; type 2 CG-PUSCH; type 1 CG-PUSCH; PUCCH.

[0294] In some implementations, the TCI state determined based on the reported information is a unified TCI state.

[0295] FIG9 is a schematic block diagram of an apparatus for downlink transmission according to an embodiment of the present application. The dashed lines in FIG9 indicate that the unit or module is optional. Apparatus 900 may be used to implement the method described in the above method embodiment. Apparatus 900 may be a chip, a terminal, or a network device.

[0296] The device 900 may include one or more processors 910. The processor 910 may support the device 900 to implement the method described in the method embodiment above. The processor 910 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0297] The apparatus 900 may further include one or more memories 920. The memories 920 store programs that can be executed by the processor 910, causing the processor 910 to perform the methods described in the above method embodiments. The memories 920 may be independent of the processor 910 or integrated into the processor 910.

[0298] The apparatus 900 may further include a transceiver 930. The processor 910 may communicate with other devices or chips via the transceiver 930. For example, the processor 910 may transmit and receive data with other devices or chips via the transceiver 930.

[0299] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0300] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0301] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0302] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first," "second," "third," and "fourth," etc. in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

[0303] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0304] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0305] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0306] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0307] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0308] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related 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 document generally indicates that the related objects are in an "or" relationship.

[0309] In 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.

[0310] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0311] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0312] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0313] 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 described in 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 device. 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 one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0314] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A reporting method, characterized in that: include: The terminal device sends reporting information to the network device, where the reporting information is triggered based on a first event and is related to a reference signal resource.

2. The method according to claim 1, characterized in that The first event is determined based on one or more of the following information: link quality corresponding to the first reference signal resource; link quality corresponding to the second reference signal resource; link quality corresponding to the third reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; The first reference signal resource and the second reference signal resource are reference signal resources of the serving cell of the terminal device, the first reference signal resource is the reference signal resource currently used by the terminal device, and the third reference signal resource is the reference signal resource of the non-serving cell of the terminal device.

3. The method according to claim 2, wherein the first event is determined based on a link quality corresponding to the first reference signal resource, comprising: The first event is determined based on a degree of fluctuation of link quality corresponding to the first reference signal resource.

4. The method according to claim 3, characterized in that The degree of fluctuation of the link quality corresponding to the first reference signal resource is determined based on one or more of the following: The number of times the link quality corresponding to the first reference signal resource drops from above a first threshold to below or equal to the first threshold within a first duration; The ratio of the duration during which the link quality corresponding to the first reference signal resource is lower than the second threshold to the second duration within the second duration.

5. The method according to any one of claims 1 to 4, characterized in that The first event includes one or more of the following: The link quality corresponding to the first reference signal resource is greater than or equal to a third threshold; The link quality corresponding to the first reference signal resource is less than or equal to a fourth threshold; The link quality corresponding to the second reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and the first offset; The link quality corresponding to the third reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and the second offset; The link quality corresponding to the second reference signal resource is greater than or equal to a fifth threshold; The link quality corresponding to the third reference signal resource is greater than or equal to a sixth threshold; The link quality corresponding to the first reference signal resource is less than or equal to a seventh threshold, and the link quality corresponding to the second reference signal resource is greater than an eighth threshold; The link quality corresponding to the first reference signal resource is less than or equal to a ninth threshold, and the link quality corresponding to the third reference signal resource is greater than a tenth threshold; The fluctuation degree of the link quality corresponding to the first reference signal resource is greater than or equal to a first range; A value of the interference information corresponding to the second reference signal resource is greater than or equal to an eleventh threshold; A value of the interference information corresponding to the third reference signal resource is greater than or equal to a twelfth threshold.

6. The method according to any one of claims 2 to 5, characterized in that The link quality is determined based on one or more of the following: layer 1 reference signal received power L1-RSRP, layer 1 reference signal received quality L1-RSRQ, layer 1 received signal strength indicator L1-RSSI, layer 1 signal to interference plus noise ratio L1-SINR, signal-to-noise ratio SNR, physical downlink control channel PDCCH block error rate BLER.

7. The method according to any one of claims 1 to 6, characterized in that The reported information includes one or more of the following information: an index of a first reference signal resource; link quality corresponding to the first reference signal resource; an index of a second reference signal resource; link quality corresponding to the second reference signal resource; an index of a third reference signal resource; link quality corresponding to the third reference signal resource; a degree of fluctuation of the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; Identifier of non-serving cell.

8. The method according to claim 7, characterized in that The method further comprises: The terminal device receives first information sent by the network device, where the first information is used to indicate a target transmission configuration indication (TCI) state, where the target TCI state includes one of the following: an index of a first reference signal resource; an index of a second reference signal resource; The index of the third reference signal resource.

9. The method according to claim 8, characterized in that The target TCI state is associated with a first timing advance TA and / or a first uplink power control parameter, and the method further includes: After the target TCI state takes effect, the terminal device performs uplink transmission based on the first TA and / or the first uplink power control parameter.

10. The method according to any one of claims 7 to 9, characterized in that The reporting information includes an index of a target reference signal resource, and the target reference signal resource is associated with target channel state information CSI.

11. The method according to claim 10, characterized in that The target CSI is determined based on measurement of a target channel state information reference signal CSI-RS, and the association of the target reference signal resource with the target CSI includes: the target reference signal and the target CSI-RS have a quasi co-location (QCL) relationship.

12. The method according to claim 10 or 11, characterized in that The target CSI is used for downlink transmission between the network device and the terminal device.

13. The method according to any one of claims 1 to 6, characterized in that The reported information includes one or more of the following information: A TCI state index corresponding to the first reference signal resource; link quality corresponding to the first reference signal resource; A TCI state index corresponding to the second reference signal resource; link quality corresponding to the second reference signal resource; A TCI state index corresponding to the third reference signal resource; link quality corresponding to the third reference signal resource; a degree of fluctuation of the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; Interference information corresponding to the third reference signal resource.

14. The method according to claim 13, characterized in that The method further comprises: The terminal device receives second information sent by the network device, where the second information is used to confirm that a target TCI state is a valid TCI state, and the target TCI state corresponds to a TCI state index in the reported information.

15. The method according to claim 14, characterized in that The uplink resources carrying the reported information are scheduled based on the first downlink control information DCI, the first DCI including a first hybrid automatic repeat request HARQ process identifier and a first new data indicator NDI corresponding to the first HARQ process identifier, the second information is a second DCI, the second DCI including the first HARQ process and a second NDI corresponding to the first HARQ process, and the value of the second NDI is opposite to that of the first NDI.

16. The method according to any one of claims 13 to 15, characterized in that The reporting information includes a TCI state index of a target TCI state, and the effective time of the target TCI state is determined based on the transmission time of the reporting information and a third duration.

17. The method according to any one of claims 14 to 16, characterized in that The target TCI state is associated with a first TA and / or a first uplink power control parameter.

18. The method according to claim 17, characterized in that The method further comprises: After the target TCI state takes effect, the terminal device performs uplink transmission based on the first TA and / or the first uplink power control parameter.

19. The method according to any one of claims 13 to 18, characterized in that The reporting information includes a TCI state index of a target TCI state, where the target TCI state is associated with a target CSI.

20. The method according to claim 19, characterized in that The target CSI is determined based on measurement of a target CSI-RS, and the association between the target TCI state and the target CSI includes one or more of the following: The target TCI state includes the target CSI-RS; The reference signal included in the target TCI state has a QCL relationship with the target CSI-RS.

21. The method according to claim 19 or 20, characterized in that The target CSI is used for downlink transmission between the network device and the terminal device.

22. The method according to any one of claims 1 to 21, characterized in that The reporting information is carried in uplink control information UCI or media access control element MAC CE.

23. The method according to any one of claims 1 to 22, characterized in that Before the terminal device sends the reporting information to the network device, the method further includes: The terminal device sends first capability information to the network device, where the first capability information is used to indicate one or more of the following: Whether the terminal device supports event-triggered beam reporting; The type of event supported by the terminal device for triggering beam reporting; the measurement capabilities of the terminal equipment; The reporting capability of the terminal device is used to indicate the request method of uplink resources, and the uplink resources are used to carry the reporting information.

24. The method according to claim 23, wherein The measurement capabilities of the terminal device include one or more of the following: the number of resources that the terminal device can measure on one or more carriers; Whether the terminal device supports downlink measurement between cells.

25. The method according to any one of claims 1 to 24, characterized in that Before the terminal device sends the reporting information to the network device, the method further includes: The terminal device receives configuration information sent by the network device, where the configuration information is used to configure one or more of the following: resources required to monitor the first event; the type of the first event; the content of the reported information; Uplink resources used to carry the reported information.

26. The method according to any one of claims 1 to 25, characterized in that The reported information is carried based on a first uplink resource, and the first uplink resource is determined based on a scheduling request SR sent by the terminal device.

27. The method according to any one of claims 1 to 25, characterized in that The reporting information is carried based on a first uplink resource, where the first uplink resource is an uplink resource within a first time period after the first event occurs.

28. The method according to claim 27, characterized in that The first uplink resource is used to carry one of the following: Physical uplink shared channel PUSCH scheduled by DCI; Type 2 configuration grants CG-PUSCH; Type 1 CG-PUSCH; Physical Uplink Control Channel PUCCH.

29. The method according to any one of claims 1 to 28, characterized in that The TCI status determined based on the reported information is a unified TCI status.

30. A reporting method, characterized in that: include: The network device receives reporting information sent by the terminal device, where the reporting information is triggered based on a first event and is related to a reference signal resource.

31. The method according to claim 30, wherein The first event is determined based on one or more of the following information: link quality corresponding to the first reference signal resource; link quality corresponding to the second reference signal resource; link quality corresponding to the third reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; The first reference signal resource and the second reference signal resource are reference signal resources of the serving cell of the terminal device, the first reference signal resource is the reference signal resource currently used by the terminal device, and the third reference signal resource is the reference signal resource of the non-serving cell of the terminal device.

32. The method according to claim 2, wherein the first event is determined based on link quality corresponding to the first reference signal resource, comprising: The first event is determined based on a degree of fluctuation of link quality corresponding to the first reference signal resource.

33. The method according to claim 32, characterized in that The degree of fluctuation of the link quality corresponding to the first reference signal resource is determined based on one or more of the following: The number of times the link quality corresponding to the first reference signal resource drops from above a first threshold to below or equal to the first threshold within a first duration; The ratio of the duration during which the link quality corresponding to the first reference signal resource is lower than the second threshold to the second duration within the second duration.

34. The method according to any one of claims 30 to 33, characterized in that The first event includes one or more of the following: The link quality corresponding to the first reference signal resource is greater than or equal to a third threshold; The link quality corresponding to the first reference signal resource is less than or equal to a fourth threshold; The link quality corresponding to the second reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and the first offset; The link quality corresponding to the third reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and the second offset; The link quality corresponding to the second reference signal resource is greater than or equal to a fifth threshold; The link quality corresponding to the third reference signal resource is greater than or equal to a sixth threshold; The link quality corresponding to the first reference signal resource is less than or equal to a seventh threshold, and the link quality corresponding to the second reference signal resource is greater than an eighth threshold; The link quality corresponding to the first reference signal resource is less than or equal to a ninth threshold, and the link quality corresponding to the third reference signal resource is greater than a tenth threshold; The fluctuation degree of the link quality corresponding to the first reference signal resource is greater than or equal to a first range; A value of the interference information corresponding to the second reference signal resource is greater than or equal to an eleventh threshold; A value of the interference information corresponding to the third reference signal resource is greater than or equal to a twelfth threshold.

35. The method according to any one of claims 31 to 34, characterized in that The link quality is determined based on one or more of the following: layer 1 reference signal received power L1-RSRP, layer 1 reference signal received quality L1-RSRQ, layer 1 received signal strength indicator L1-RSSI, layer 1 signal to interference plus noise ratio L1-SINR, signal-to-noise ratio SNR, physical downlink control channel PDCCH block error rate BLER.

36. The method according to any one of claims 30 to 35, characterized in that The reported information includes one or more of the following information: an index of a first reference signal resource; link quality corresponding to the first reference signal resource; an index of a second reference signal resource; link quality corresponding to the second reference signal resource; an index of a third reference signal resource; link quality corresponding to the third reference signal resource; a degree of fluctuation of the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; Identifier of non-serving cell.

37. The method according to claim 36, wherein The method further comprises: The network device sends first information to the terminal device, where the first information is used to indicate a target transmission configuration indication (TCI) state, where the target TCI state includes one of the following: an index of a first reference signal resource; an index of a second reference signal resource; The index of the third reference signal resource.

38. The method according to claim 37, wherein The target TCI state is associated with a first timing advance TA and / or a first uplink power control parameter, and the first TA and / or the first uplink power control parameter are used for uplink transmission after the target TCI state takes effect.

39. The method according to any one of claims 36 to 38, characterized in that The reporting information includes an index of a target reference signal resource, and the target reference signal resource is associated with target channel state information CSI.

40. The method according to claim 39, wherein The target CSI is determined based on measurement of a target channel state information reference signal CSI-RS, and the association of the target reference signal resource with the target CSI includes: the target reference signal and the target CSI-RS have a quasi co-location (QCL) relationship.

41. The method according to claim 39 or 40, characterized in that The method further comprises: The network device performs downlink transmission with the terminal device according to the target CSI.

42. The method according to any one of claims 30 to 35, characterized in that The reported information includes one or more of the following information: A TCI state index corresponding to the first reference signal resource; link quality corresponding to the first reference signal resource; A TCI state index corresponding to the second reference signal resource; link quality corresponding to the second reference signal resource; A TCI state index corresponding to the third reference signal resource; link quality corresponding to the third reference signal resource; a degree of fluctuation of the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; Interference information corresponding to the third reference signal resource.

43. The method according to claim 42, characterized in that The method further comprises: The network device sends second information to the terminal device, where the second information is used to confirm that a target TCI state is a valid TCI state, and the target TCI state corresponds to a TCI state index in the reported information.

44. The method according to claim 43, wherein The uplink resources carrying the reported information are scheduled based on the first downlink control information DCI, the first DCI including a first hybrid automatic repeat request HARQ process identifier and a first new data indicator NDI corresponding to the first HARQ process identifier, the second information is a second DCI, the second DCI including the first HARQ process and a second NDI corresponding to the first HARQ process, and the value of the second NDI is opposite to that of the first NDI.

45. The method according to any one of claims 42 to 44, characterized in that The reporting information includes a TCI state index of a target TCI state, and the effective time of the target TCI state is determined based on the transmission time of the reporting information and a third duration.

46. The method according to any one of claims 43 to 45, characterized in that The target TCI state is associated with a first TA and / or a first uplink power control parameter.

47. The method according to claim 46, wherein The first TA and / or the first uplink power control parameter is used for uplink transmission after the target TCI state takes effect.

48. The method according to any one of claims 42 to 47, characterized in that The reporting information includes a TCI state index of a target TCI state, where the target TCI state is associated with a target CSI.

49. The method according to claim 48, characterized in that The target CSI is determined based on measurement of a target CSI-RS, and the association between the target TCI state and the target CSI includes one or more of the following: The target TCI state includes the target CSI-RS; The reference signal included in the target TCI state has a QCL relationship with the target CSI-RS.

50. The method according to claim 48 or 49, characterized in that The method further comprises: The network device performs downlink transmission with the terminal device according to the target CSI.

51. The method according to any one of claims 30 to 50, characterized in that The reporting information is carried in uplink control information UCI or media access control element MAC CE.

52. The method according to any one of claims 30 to 51, characterized in that Before the network device receives the reporting information sent by the terminal device, the method further includes: The network device receives first capability information sent by the terminal device, where the first capability information is used to indicate one or more of the following: Whether the terminal device supports event-triggered beam reporting; The type of event supported by the terminal device for triggering beam reporting; the measurement capabilities of the terminal equipment; The reporting capability of the terminal device is used to indicate the request method of uplink resources, and the uplink resources are used to carry the reporting information.

53. The method according to claim 52, characterized in that The measurement capabilities of the terminal device include one or more of the following: the number of resources that the terminal device can measure on one or more carriers; Whether the terminal device supports downlink measurement between cells.

54. The method according to any one of claims 30 to 53, characterized in that Before the network device receives the reporting information sent by the terminal device, the method further includes: The network device sends configuration information to the terminal device, where the configuration information is used to configure one or more of the following: resources required to monitor the first event; the type of the first event; the content of the reported information; Uplink resources used to carry the reported information.

55. The method according to any one of claims 30 to 54, characterized in that The reported information is carried based on a first uplink resource, and the first uplink resource is determined based on a scheduling request SR sent by the terminal device.

56. The method according to any one of claims 30 to 54, characterized in that The reporting information is carried based on a first uplink resource, where the first uplink resource is an uplink resource within a first time period after the first event occurs.

57. The method according to claim 56, characterized in that The first uplink resource is used to carry one of the following: Physical uplink shared channel PUSCH scheduled by DCI; Type 2 configuration grants CG-PUSCH; Type 1 CG-PUSCH; Physical Uplink Control Channel PUCCH.

58. The method according to any one of claims 30 to 57, characterized in that The TCI status determined based on the reported information is a unified TCI status.

59. A terminal device, characterized in that: include: The first communication unit is configured to send reporting information to a network device, where the reporting information is triggered based on a first event and is related to a reference signal resource.

60. The terminal device according to claim 59, characterized in that The first event is determined based on one or more of the following information: link quality corresponding to the first reference signal resource; link quality corresponding to the second reference signal resource; link quality corresponding to the third reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; The first reference signal resource and the second reference signal resource are reference signal resources of the serving cell of the terminal device, the first reference signal resource is the reference signal resource currently used by the terminal device, and the third reference signal resource is the reference signal resource of the non-serving cell of the terminal device.

61. The method according to claim 60, wherein the first event is determined based on link quality corresponding to the first reference signal resource, comprising: The first event is determined based on a degree of fluctuation of link quality corresponding to the first reference signal resource.

62. The terminal device according to claim 61, characterized in that The degree of fluctuation of the link quality corresponding to the first reference signal resource is determined based on one or more of the following: The number of times the link quality corresponding to the first reference signal resource drops from above a first threshold to below or equal to the first threshold within a first duration; The ratio of the duration during which the link quality corresponding to the first reference signal resource is lower than the second threshold to the second duration within the second duration.

63. The terminal device according to any one of claims 60 to 62, characterized in that: The first event includes one or more of the following: The link quality corresponding to the first reference signal resource is greater than or equal to a third threshold; The link quality corresponding to the first reference signal resource is less than or equal to a fourth threshold; The link quality corresponding to the second reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and the first offset; The link quality corresponding to the third reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and the second offset; The link quality corresponding to the second reference signal resource is greater than or equal to a fifth threshold; The link quality corresponding to the third reference signal resource is greater than or equal to a sixth threshold; The link quality corresponding to the first reference signal resource is less than or equal to a seventh threshold, and the link quality corresponding to the second reference signal resource is greater than an eighth threshold; The link quality corresponding to the first reference signal resource is less than or equal to a ninth threshold, and the link quality corresponding to the third reference signal resource is greater than a tenth threshold; The fluctuation degree of the link quality corresponding to the first reference signal resource is greater than or equal to a first range; A value of the interference information corresponding to the second reference signal resource is greater than or equal to an eleventh threshold; A value of the interference information corresponding to the third reference signal resource is greater than or equal to a twelfth threshold.

64. The terminal device according to any one of claims 60 to 63, characterized in that: The link quality is determined based on one or more of the following: layer 1 reference signal received power L1-RSRP, layer 1 reference signal received quality L1-RSRQ, layer 1 received signal strength indicator L1-RSSI, layer 1 signal to interference plus noise ratio L1-SINR, signal-to-noise ratio SNR, physical downlink control channel PDCCH block error rate BLER.

65. The terminal device according to any one of claims 59 to 64, characterized in that The reported information includes one or more of the following information: an index of a first reference signal resource; link quality corresponding to the first reference signal resource; an index of a second reference signal resource; link quality corresponding to the second reference signal resource; an index of a third reference signal resource; link quality corresponding to the third reference signal resource; a degree of fluctuation of the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; Identifier of non-serving cell.

66. The terminal device according to claim 65, characterized in that The terminal device further includes: The second communication unit is configured to receive first information sent by a network device, where the first information is used to indicate a target transmission configuration indication (TCI) state, where the target TCI state includes one of the following: an index of a first reference signal resource; an index of a second reference signal resource; The index of the third reference signal resource.

67. The terminal device according to claim 66, characterized in that The target TCI state is associated with a first timing advance TA and / or a first uplink power control parameter, and the terminal device further includes: The third communication unit is used to perform uplink transmission based on the first TA and / or the first uplink power control parameter after the target TCI state takes effect.

68. The terminal device according to any one of claims 63 to 67, characterized in that: The reporting information includes an index of a target reference signal resource, and the target reference signal resource is associated with target channel state information CSI.

69. The terminal device according to claim 68, characterized in that The target CSI is determined based on measurement of a target channel state information reference signal CSI-RS, and the association of the target reference signal resource with the target CSI includes: the target reference signal and the target CSI-RS have a quasi co-location (QCL) relationship.

70. The terminal device according to claim 68 or 69, characterized in that: The target CSI is used for downlink transmission between the network device and the terminal device.

71. The terminal device according to any one of claims 59 to 62, characterized in that: The reported information includes one or more of the following information: A TCI state index corresponding to the first reference signal resource; link quality corresponding to the first reference signal resource; A TCI state index corresponding to the second reference signal resource; link quality corresponding to the second reference signal resource; A TCI state index corresponding to the third reference signal resource; link quality corresponding to the third reference signal resource; a degree of fluctuation of the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; Interference information corresponding to the third reference signal resource.

72. The terminal device according to claim 71, characterized in that The terminal device further includes: The fourth communication unit is used to receive second information sent by the network device, where the second information is used to confirm that the target TCI state is a valid TCI state, and the target TCI state corresponds to a TCI state index in the reported information.

73. The terminal device according to claim 72, characterized in that The uplink resources carrying the reported information are scheduled based on the first downlink control information DCI, the first DCI including a first hybrid automatic repeat request HARQ process identifier and a first new data indicator NDI corresponding to the first HARQ process identifier, the second information is a second DCI, the second DCI including the first HARQ process and a second NDI corresponding to the first HARQ process, and the value of the second NDI is opposite to that of the first NDI.

74. The terminal device according to any one of claims 71 to 73, characterized in that The reporting information includes a TCI state index of a target TCI state, and the effective time of the target TCI state is determined based on the transmission time of the reporting information and a third duration.

75. The terminal device according to any one of claims 72 to 74, characterized in that The target TCI state is associated with a first TA and / or a first uplink power control parameter.

76. The terminal device according to claim 75, characterized in that The terminal device further includes: A fifth communication unit is configured to perform uplink transmission based on the first TA and / or the first uplink power control parameter after the target TCI state takes effect.

77. The terminal device according to any one of claims 71 to 76, characterized in that The reporting information includes a TCI state index of a target TCI state, where the target TCI state is associated with a target CSI.

78. The terminal device according to claim 77, characterized in that The target CSI is determined based on measurement of a target CSI-RS, and the association between the target TCI state and the target CSI includes one or more of the following: The target TCI state includes the target CSI-RS; The reference signal included in the target TCI state has a QCL relationship with the target CSI-RS.

79. The terminal device according to claim 77 or 78, characterized in that The target CSI is used for downlink transmission between the network device and the terminal device.

80. The terminal device according to any one of claims 59 to 79, characterized in that: The reporting information is carried in uplink control information UCI or media access control element MAC CE.

81. The terminal device according to any one of claims 59 to 80, characterized in that: The terminal device further includes: A sixth communication unit is configured to send first capability information to the network device before the terminal device sends the reporting information to the network device, where the first capability information is used to indicate one or more of the following: Whether the terminal device supports event-triggered beam reporting; The type of event supported by the terminal device for triggering beam reporting; the measurement capabilities of the terminal equipment; The reporting capability of the terminal device is used to indicate the request method of uplink resources, and the uplink resources are used to carry the reporting information.

82. The terminal device according to claim 81, characterized in that The measurement capabilities of the terminal device include one or more of the following: the number of resources that the terminal device can measure on one or more carriers; Whether the terminal device supports downlink measurement between cells.

83. The terminal device according to any one of claims 59 to 82, characterized in that: The terminal device further includes: a seventh communication unit, configured to receive configuration information sent by the network device before the terminal device sends the reporting information to the network device, where the configuration information is used to configure one or more of the following: resources required to monitor the first event; the type of the first event; the content of the reported information; Uplink resources used to carry the reported information.

84. The terminal device according to any one of claims 59 to 83, characterized in that The reported information is carried based on a first uplink resource, and the first uplink resource is determined based on the SR sent by the terminal device.

85. The terminal device according to any one of claims 59 to 83, characterized in that: The reporting information is carried based on a first uplink resource, where the first uplink resource is an uplink resource within a first time period after the first event occurs.

86. The terminal device according to claim 85, characterized in that The first uplink resource is used to carry one of the following: Physical uplink shared channel PUSCH scheduled by DCI; Type 2 configuration grants CG-PUSCH; Type 1 CG-PUSCH; Physical Uplink Control Channel PUCCH.

87. The terminal device according to any one of claims 59 to 86, characterized in that: The TCI status determined based on the reported information is a unified TCI status.

88. A network device, characterized in that include: The first communication unit is used to receive reporting information sent by a terminal device, where the reporting information is triggered based on a first event and is related to a reference signal resource.

89. The network device according to claim 88, characterized in that The first event is determined based on one or more of the following information: link quality corresponding to the first reference signal resource; link quality corresponding to the second reference signal resource; link quality corresponding to the third reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; The first reference signal resource and the second reference signal resource are reference signal resources of the serving cell of the terminal device, the first reference signal resource is the reference signal resource currently used by the terminal device, and the third reference signal resource is the reference signal resource of the non-serving cell of the terminal device.

90. The method according to claim 89, wherein the first event is determined based on link quality corresponding to the first reference signal resource, comprising: The first event is determined based on a degree of fluctuation of link quality corresponding to the first reference signal resource.

91. The network device according to claim 90, wherein: The degree of fluctuation of the link quality corresponding to the first reference signal resource is determined based on one or more of the following: The number of times the link quality corresponding to the first reference signal resource drops from above a first threshold to below or equal to the first threshold within a first duration; The ratio of the duration during which the link quality corresponding to the first reference signal resource is lower than the second threshold to the second duration within the second duration.

92. The network device according to any one of claims 89 to 91, characterized in that The first event includes one or more of the following: The link quality corresponding to the first reference signal resource is greater than or equal to a third threshold; The link quality corresponding to the first reference signal resource is less than or equal to a fourth threshold; The link quality corresponding to the second reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and the first offset; The link quality corresponding to the third reference signal resource is greater than or equal to the sum of the link quality corresponding to the first reference signal resource and the second offset; The link quality corresponding to the second reference signal resource is greater than or equal to a fifth threshold; The link quality corresponding to the third reference signal resource is greater than or equal to a sixth threshold; The link quality corresponding to the first reference signal resource is less than or equal to a seventh threshold, and the link quality corresponding to the second reference signal resource is greater than an eighth threshold; The link quality corresponding to the first reference signal resource is less than or equal to a ninth threshold, and the link quality corresponding to the third reference signal resource is greater than a tenth threshold; The fluctuation degree of the link quality corresponding to the first reference signal resource is greater than or equal to a first range; A value of the interference information corresponding to the second reference signal resource is greater than or equal to an eleventh threshold; A value of the interference information corresponding to the third reference signal resource is greater than or equal to a twelfth threshold.

93. The network device according to any one of claims 89 to 92, characterized in that The link quality is determined based on one or more of the following: layer 1 reference signal received power L1-RSRP, layer 1 reference signal received quality L1-RSRQ, layer 1 received signal strength indicator L1-RSSI, layer 1 signal to interference plus noise ratio L1-SINR, signal-to-noise ratio SNR, physical downlink control channel PDCCH block error rate BLER.

94. The network device according to any one of claims 88 to 93, characterized in that The reported information includes one or more of the following information: an index of a first reference signal resource; link quality corresponding to the first reference signal resource; an index of a second reference signal resource; link quality corresponding to the second reference signal resource; an index of a third reference signal resource; link quality corresponding to the third reference signal resource; a degree of fluctuation of the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; interference information corresponding to the third reference signal resource; Identifier of non-serving cell.

95. The network device according to claim 94, characterized in that The network device further includes: The second communication unit is configured to send first information to the terminal device, where the first information is used to indicate a target transmission configuration indication (TCI) state, where the target TCI state includes one of the following: an index of a first reference signal resource; an index of a second reference signal resource; The index of the third reference signal resource.

96. The network device according to claim 95, characterized in that The target TCI state is associated with a first timing advance TA and / or a first uplink power control parameter, and the first TA and / or the first uplink power control parameter are used for uplink transmission after the target TCI state takes effect.

97. The network device according to any one of claims 92 to 96, characterized in that The reporting information includes an index of a target reference signal resource, and the target reference signal resource is associated with target channel state information CSI.

98. The network device according to claim 97, wherein: The target CSI is determined based on measurement of a target channel state information reference signal CSI-RS, and the association of the target reference signal resource with the target CSI includes: the target reference signal and the target CSI-RS have a quasi co-location (QCL) relationship.

99. The network device according to claim 97 or 98, characterized in that The network device further includes: The third communication unit is used to perform downlink transmission with the terminal device according to the target CSI.

100. The network device according to any one of claims 88 to 92, characterized in that The reported information includes one or more of the following information: A TCI state index corresponding to the first reference signal resource; link quality corresponding to the first reference signal resource; A TCI state index corresponding to the second reference signal resource; link quality corresponding to the second reference signal resource; A TCI state index corresponding to the third reference signal resource; link quality corresponding to the third reference signal resource; a degree of fluctuation of the link quality corresponding to the first reference signal resource; interference information corresponding to the second reference signal resource; Interference information corresponding to the third reference signal resource.

101. The network device according to claim 100, characterized in that The network device further includes: The fourth communication unit is used to send second information to the terminal device, where the second information is used to confirm that the target TCI state is a valid TCI state, and the target TCI state corresponds to a TCI state index in the reported information.

102. The network device according to claim 101, wherein: The uplink resources carrying the reported information are scheduled based on the first downlink control information DCI, the first DCI including a first hybrid automatic repeat request HARQ process identifier and a first new data indicator NDI corresponding to the first HARQ process identifier, the second information is a second DCI, the second DCI including the first HARQ process and a second NDI corresponding to the first HARQ process, and the value of the second NDI is opposite to that of the first NDI.

103. The network device according to any one of claims 100 to 102, characterized in that: The reporting information includes a TCI state index of a target TCI state, and the effective time of the target TCI state is determined based on the transmission time of the reporting information and a third duration.

104. The network device according to any one of claims 101 to 103, characterized in that: The target TCI state is associated with a first TA and / or a first uplink power control parameter.

105. The network device according to claim 104, characterized in that The first TA and / or the first uplink power control parameter is used for uplink transmission after the target TCI state takes effect.

106. The network device according to any one of claims 100 to 105, characterized in that The reporting information includes a TCI state index of a target TCI state, where the target TCI state is associated with a target CSI.

107. The network device according to claim 106, characterized in that The target CSI is determined based on measurement of a target CSI-RS, and the association between the target TCI state and the target CSI includes one or more of the following: The target TCI state includes the target CSI-RS; The reference signal included in the target TCI state has a QCL relationship with the target CSI-RS.

108. The network device according to claim 106 or 107, characterized in that The network device further includes: A fifth communication unit is used to perform downlink transmission with the terminal device according to the target CSI.

109. The network device according to any one of claims 88 to 108, characterized in that The reporting information is carried in uplink control information UCI or media access control element MAC CE.

110. The network device according to any one of claims 88 to 109, characterized in that The network device further includes: A sixth communication unit is configured to receive first capability information sent by the terminal device before the network device receives the reporting information sent by the terminal device, where the first capability information is used to indicate one or more of the following: Whether the terminal device supports event-triggered beam reporting; The type of event supported by the terminal device for triggering beam reporting; the measurement capabilities of the terminal equipment; The reporting capability of the terminal device is used to indicate the request method of uplink resources, and the uplink resources are used to carry the reporting information.

111. The network device according to claim 110, characterized in that The measurement capabilities of the terminal device include one or more of the following: the number of resources that the terminal device can measure on one or more carriers; Whether the terminal device supports downlink measurement between cells.

112. The network device according to any one of claims 88 to 111, characterized in that The network device further includes: a seventh communication unit, configured to send configuration information to the terminal device before the network device receives the reporting information sent by the terminal device, where the configuration information is used to configure one or more of the following: resources required to monitor the first event; the type of the first event; the content of the reported information; Uplink resources used to carry the reported information.

113. The network device according to any one of claims 88 to 102, characterized in that The reported information is carried based on a first uplink resource, and the first uplink resource is determined based on the SR sent by the terminal device.

114. The network device according to any one of claims 88 to 102, characterized in that The reporting information is carried based on a first uplink resource, where the first uplink resource is an uplink resource within a first time period after the first event occurs.

115. The network device according to claim 114, characterized in that The first uplink resource is used to carry one of the following: Physical uplink shared channel PUSCH scheduled by DCI; Type 2 configuration grants CG-PUSCH; Type 1 CG-PUSCH; Physical Uplink Control Channel PUCCH.

116. The network device according to any one of claims 88 to 115, characterized in that The TCI status determined based on the reported information is a unified TCI status.

117. A terminal device, characterized in that: It includes a transceiver, a memory and a processor, the memory is used to store programs, the processor is used to call the programs in the memory and control the transceiver to receive or send signals, so that the terminal device executes the method as described in any one of claims 1 to 29.

118. A network device, characterized in that It includes a transceiver, a memory and a processor, the memory is used to store a program, the processor is used to call the program in the memory and control the transceiver to receive or send a signal so that the network device executes the method as described in any one of claims 30 to 58.

119. A device, characterized in that The device comprises a processor configured to call a program from a memory so as to cause the device to execute the method according to any one of claims 1 to 29 or 30 to 58.

120. A chip, characterized in that: The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 1 to 29 or 30 to 58.

121. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 29 or 30 to 58.

122. A computer program product, characterized in that A program is included, which causes a computer to execute the method according to any one of claims 1 to 29 or 30 to 58.

123. A computer program, characterized in that The computer program causes a computer to execute the method of any one of claims 1 to 29 or 30 to 58.

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