Wireless communication method, terminal device, and network device

Abstract

A wireless communication method, a terminal device, and a network device. The method comprises: if a first condition is satisfied, a terminal device executes a first operation, wherein the first operation comprises one of the following: switching from a serving beam to a target beam; and sending first information to a network device, wherein the first information comprises a beam measurement result.

Description

Wireless communication method, terminal equipment and network equipment Technical Field

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

[0002] The traditional beam selection process involves the terminal device measuring the beam and sending the measured beam measurement results to the network device. The network device then determines whether the terminal device should switch beams based on the beam measurement results and ultimately instructs the terminal device whether to switch beams. This beam switching process requires multiple signaling interactions, resulting in a long beam switching time and potentially causing beam failures.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method, terminal device, and network device. The following introduces various aspects of the present application.

[0005] In a first aspect, a method for wireless communication is provided, including: if a first condition is met, a terminal device performs a first operation, wherein the first operation includes one of the following: switching from a service beam to a target beam; sending first information to a network device, wherein the first information includes a beam measurement result.

[0006] In a second aspect, a method for wireless communication is provided, including: a network device receives target information sent by a terminal device, the target information including one of the following: first indication information, the first indication information is used to instruct the terminal device to switch from a service beam to a target beam; first information, the first information includes a beam measurement result, and the triggering of the first information is based on a first condition.

[0007] In a third aspect, a terminal device is provided, including: if a first condition is met, a processing unit is used to perform a first operation, wherein the first operation includes one of the following: switching from a service beam to a target beam; sending first information to a network device, wherein the first information includes a beam measurement result.

[0008] In a fourth aspect, a network device is provided, including: a receiving unit for receiving target information sent by a terminal device, the target information including one of the following: first indication information, the first indication information being used to instruct the terminal device to switch from a service beam to a target beam; first information, the first information including a beam measurement result, the triggering of the first information being based on a first condition.

[0009] 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.

[0010] In a sixth aspect, a network device is provided, comprising a processor, a memory, and a transceiver, 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.

[0011] In a seventh aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and / or network device. In another possible design, the system may also include other devices that interact with the terminal device or network device in the solution provided in the embodiment of the present application.

[0012] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables a communication device (for example, a terminal device or a network device) to execute part or all of the steps in the methods of the above aspects.

[0013] In a ninth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a communication device (e.g., a terminal device or a network device) to perform some or all of the steps of the methods described in each of the above aspects. In some implementations, the computer program product can be a software installation package.

[0014] In the tenth aspect, an embodiment of the present application provides a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0015] In an embodiment of the present application, the terminal device can autonomously switch from the service beam to the target beam based on whether the first condition is met without waiting for instructions from the network device, which helps to reduce the high delay caused by information interaction during the beam switching process.

[0016] On the other hand, in the embodiment of the present application, the terminal device can independently determine whether to report the beam measurement result based on whether the first condition is met. Compared with the periodic beam measurement result reporting method, it helps to reduce the time required for the beam switching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a wireless communication system 100 used in an embodiment of the present application.

[0018] FIG2 shows the process of configuration and indication of the joint TCI status.

[0019] FIG3 shows the flow of configuration and indication of separate TCI states.

[0020] FIG4 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.

[0021] FIG5 is a schematic diagram of a terminal device according to an embodiment of the present application.

[0022] FIG6 is a schematic diagram of a network device according to an embodiment of the present application.

[0023] FIG7 is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The technical solution in this application will be described below with reference to the accompanying drawings.

[0025] Figure 1 illustrates 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 may provide communication coverage for a specific geographic area and may communicate with the terminal device 120 within the coverage area.

[0026] FIG1 exemplarily shows a network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0027] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0028] 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.

[0029] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. 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 with wireless connection function, a vehicle-mounted device, etc. 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 UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. 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 the base station.

[0030] 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 can broadly cover various names as follows, or be replaced with the following names, for example: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission 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 can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. A base station can also refer to a communication module, a modem or a chip used to be set in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs base station functions in device-to-device D2D, vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the network equipment.

[0031] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0032] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0033] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0034] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0035] Transmission Configuration Indicator (TCI state) activation / deactivation

[0036] Some protocols (e.g., R15 and R16) stipulate that all channels and reference signals can use their own independent beams, and each downlink or uplink channel and reference channel uses separate signaling to transmit beam indication and configuration. For example, during downlink transmission, the beam of the physical downlink control channel (PDCCH) is signaled by the media access control control element (MAC CE) to indicate a TCI state for each control resource set (CORESET). The beam of the physical downlink shared channel (PDSCH) is the TCI state dynamically indicated by the DCI for the scheduled PDSCH. In uplink transmission, the beams of the physical uplink control channel (PUCCH) and the sounding reference signal (SRS) are indicated by the spatial relation information of each PUCCH resource or each SRS resource.

[0037] This design provides maximum flexibility and freedom for implementing beamforming in commercial systems. For example, network equipment can freely select beams for transmission for each channel and reference signal. However, this design can result in high signaling overhead during beam switching, and the multiple information exchanges required during beam switching can lead to long latency.

[0038] Furthermore, the flexibility and freedom provided in some scenarios are often undesirable in actual network deployments. For example, in real-world systems, a common deployment scenario involves multiple downlink and uplink channels using the same beam, eliminating the need for separate instructions. Furthermore, another issue with beam management in R15 and R16 is that uplink and downlink use completely different mechanisms: downlink beam management is based on TCI status, while uplink beam management is based on spatial relationship information.

[0039] To address these issues and better support beam switching with low latency and low signaling overhead, a beam management mechanism based on a unified TCI framework was introduced in subsequent communication protocols (e.g., Release 17). This unified TCI framework-based beam management mechanism primarily includes the following two technical features.

[0040] Technical feature 1: Beam indication for all uplink and downlink channels and reference signals is implemented using the unified concept of TCI state.

[0041] Technical Feature 2: The transmission beams for the terminal-specific PDCCH, terminal-specific PDSCH, terminal-specific physical uplink shared channel (PUSCH), and terminal-specific PUCCH channels are unified into a single TCI state. This means that transmissions of these channels always use the same beam. Accordingly, network devices can use a single beam indication signaling to indicate the unified TCI state they are using.

[0042] In some implementations, within the unified TCI framework, network devices can use radio resource control (RRC), MAC CE, and downlink control information (DCI) to indicate a joint TCI state or a pair of downlink / uplink TCI states. Figures 2 and 3 illustrate the configuration and indication processes for the joint TCI state and the separate TCI state, respectively.

[0043] 2, in step S210, the network device may configure a set of TCI states for the terminal device via RRC signaling. For the joint TCI mode, the network device may configure a set of joint TCI states for the terminal device via RRC signaling.

[0044] In step S220, the network device activates one or more TCI states from the TCI state group configured by RRC signaling by sending MAC CE signaling to the terminal device. For the joint TCI mode, the network device can activate K joint TCI states through MAC CE signaling, where K ≤ 8.

[0045] In step S230 , the network device indicates a TCI state used for current transmission from among K joint TCI states by sending DCI to the terminal device.

[0046] 3 , in step S310, the network device may use RRC signaling to configure a set of TCI states for the terminal device. For the split TCI mode, the network device may use RRC signaling to configure a set of downlink TCI states and a set of uplink TCI states for the terminal device.

[0047] In step S320, the network device activates one or more TCI states from the TCI state group configured by RRC signaling by sending MAC CE signaling to the terminal device. For split TCI mode, the network device can activate K pairs of TCI states via MAC CE signaling: {downlink TCI state, uplink TCI state}, where K ≤ 8.

[0048] In step S330 , the network device indicates a pair of TCI states used for current transmission from K pairs of TCI states by sending DCI to the terminal device.

[0049] 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:

[0050] 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], then this MAC CE applies to all serving cells in simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4 respectively.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] R field: This field is a reserved bit and can usually be set to 0.

[0057] Currently, the traditional beam selection process involves the terminal device measuring the beam and sending the beam measurement results to the network device. The network device then determines whether the terminal device should switch beams based on the beam measurement results and ultimately instructs the terminal device whether to switch beams. This beam switching process requires multiple signaling interactions, resulting in a long beam switching time and potentially causing beam failures.

[0058] Therefore, in response to the above problems, an embodiment of the present application provides a method for wireless communication, in which the terminal device can autonomously switch from the service beam to the target beam based on whether the first condition is met, without waiting for instructions from the network device, which helps to reduce the high delay caused by information interaction during the beam switching process.

[0059] In the embodiments of the present application, the target beam is not limited. For example, the target beam can be a single beam, such as an uplink beam, or a downlink beam. For another example, the target beam can include a pair of beams, such as an uplink beam and a downlink beam.

[0060] On the other hand, during the traditional beam switching process, the terminal device periodically reports the beam measurement results. If the reporting period of the beam measurement results is configured to be relatively long, the beam switching process may take a long time, thereby causing beam failure.

[0061] Therefore, to address the above issues, another embodiment of the present application provides a wireless communication method in which a terminal device can autonomously determine whether to report beam measurement results based on whether a first condition is met. Compared to periodic beam measurement result reporting, this method helps reduce the time required for the beam switching process.

[0062] The following describes a wireless communication method according to an embodiment of the present application in conjunction with Figure 4. Figure 4 is a schematic flow chart of a wireless communication method according to an embodiment of the present application. The method shown in Figure 4 includes step S410.

[0063] In step S410, if the first condition is met, the terminal device performs a first operation, wherein the first operation includes one of the following: switching from a serving beam to a target beam; sending first information to a network device, wherein the first information includes a beam measurement result.

[0064] In the embodiments of the present application, the beam measurement results are not limited. In some implementations, the beam measurement results may include layer 1 beam measurement results and / or layer 3 beam measurement results. For example, the beam measurement results of a beam may include one or more of the following: reference signal receiving power (RSRP); reference signal receiving quality (RSRQ); signal to interference plus noise ratio (SINR); and block error rate (BLER).

[0065] In an embodiment of the present application, the above-mentioned beam measurement result is obtained by measuring the beam. Among them, measuring the beam can be understood as measuring the reference signal associated with the beam. This application is an example and does not limit the type of reference signal. The reference signal may include, for example, one or more of the following synchronization signal / physical broadcast channel block (SSB); PDCCH demodulation reference signal (DMRS); channel state information reference signal (CSI-RS), etc. Of course, in an embodiment of the present application, the above-mentioned reference signal may be a reference signal transmitted periodically, or the above-mentioned reference signal may be a reference signal transmitted aperiodically.

[0066] In some implementations, the first condition is associated with one or more of: a first timer; a first counter; a location of the terminal device; a beam measurement result of the serving beam; a beam measurement result of the target beam; a beam measurement result of the beam in the first beam set.

[0067] Taking the first condition associating with the beam measurement result of the target beam as an example, generally, if the beam measurement result of the target beam is good, the terminal device can switch from the serving beam to the target beam. In some implementations, the quality of the beam measurement result of the target beam can be determined based on the first threshold.

[0068] For example, if the beam measurement result of the target beam is greater than or equal to a first threshold, it indicates that the beam measurement result of the target beam is good. In this case, the terminal device can switch from the serving beam to the target beam. In other words, the first condition can include the beam measurement result of the target beam being greater than or equal to the first threshold. Correspondingly, if the beam measurement result of the target beam is less than the first threshold, it indicates that the beam measurement result of the target beam is poor. In this case, the terminal device may not perform beam switching.

[0069] For example, if the beam measurement result includes RSRP, if the RSRP of the target beam is greater than or equal to a first threshold, the beam measurement result of the target beam is good. In this case, the terminal device can switch from the serving beam to the target beam. If the RSRP of the target beam is less than the first threshold, the beam measurement result of the target beam is poor. In this case, the terminal device does not need to switch beams.

[0070] For another example, if the beam measurement result of the target beam is less than or equal to a first threshold, it indicates that the beam measurement result of the target beam is good, and the terminal device can switch from the serving beam to the target beam. In other words, the first condition can include the beam measurement result of the target beam being less than or equal to the first threshold. Correspondingly, if the beam measurement result of the target beam is greater than the first threshold, it indicates that the beam measurement result of the target beam is poor. In this case, the terminal device may not perform beam switching.

[0071] For example, if the beam measurement result includes the BLER, if the BLER of the target beam is less than or equal to the first threshold, the beam measurement result of the target beam is good. In this case, the terminal device can switch from the serving beam to the target beam. Conversely, if the BLER of the target beam is greater than the first threshold, the beam measurement result of the target beam is poor. In this case, the terminal device does not need to perform beam switching.

[0072] As previously described, the beam measurement result of the target beam may include a single beam measurement result of the target beam. In embodiments of the present application, the beam measurement result may include multiple beam measurement results for the target beam, which helps improve beam switching accuracy. The multiple beam measurement results are obtained based on multiple discontinuous measurements in time. Alternatively, the multiple beam measurement results may be obtained based on multiple continuous measurements in time.

[0073] For example, if multiple beam measurement results for the target beam are all greater than or equal to a first threshold, the target beam's beam measurement results are considered good. In this case, the terminal device may switch from the serving beam to the target beam. In other words, the first condition may include multiple beam measurement results for the target beam being greater than or equal to the first threshold. Correspondingly, if multiple beam measurement results for the target beam are all less than the first threshold, the target beam's beam measurement results are considered poor. In this case, the terminal device may not perform beam switching.

[0074] For example, if the beam measurement results include RSRP, if the RSRP obtained from multiple measurements of the target beam is greater than or equal to the first threshold, the beam measurement results for the target beam are good. In this case, the terminal device can switch from the serving beam to the target beam. If the RSRP obtained from multiple measurements of the target beam is less than the first threshold, the beam measurement results for the target beam are poor. In this case, the terminal device does not need to switch beams.

[0075] For example, if multiple beam measurement results for the target beam are less than or equal to a first threshold, the target beam's beam measurement results are considered good, and the terminal device may switch from the serving beam to the target beam. In other words, the first condition may include multiple beam measurement results for the target beam being less than or equal to the first threshold. Correspondingly, if multiple beam measurement results for the target beam are greater than the first threshold, the target beam's beam measurement results are considered poor. In this case, the terminal device may not perform beam switching.

[0076] For example, if the beam measurement results include BLER, if the BLER obtained from multiple measurements of the target beam is less than or equal to a first threshold, the beam measurement result for the target beam is good, and the terminal device can switch from the serving beam to the target beam. Conversely, if the BLER obtained from multiple measurements of the target beam is greater than the first threshold, the beam measurement result for the target beam is poor, and the terminal device can avoid performing beam switching.

[0077] In an embodiment of the present application, the aforementioned multiple beam measurement results may also be beam measurement results obtained from multiple measurements within a first time period. Accordingly, the first condition may include that the multiple beam measurement results of the target beam within the first time period are all greater than or equal to a first threshold, or that the multiple beam measurement results of the target beam within the first time period are all less than the first threshold. The first time period may be predefined, preconfigured, or configured by a network device.

[0078] It should be noted that the above-mentioned first threshold can be determined based on pre-configuration information, or based on predefined information, or based on configuration information of the network device, and the embodiments of the present application do not limit this.

[0079] Furthermore, in the embodiments of the present application, the situation where the beam measurement result is equal to the first threshold is not limited. For example, if the beam measurement result of the target beam is less than the first threshold, it can indicate that the quality of the target beam is good. For another example, if the beam measurement result of the serving beam is greater than the first threshold, it can indicate that the quality of the target beam is good.

[0080] Taking the first condition associating with the beam measurement result of the serving beam as an example, generally, if the beam measurement result of the serving beam is poor, the terminal device can switch from the serving beam to the target beam. In some implementations, the quality of the beam measurement result of the serving beam can be determined based on the second threshold.

[0081] For example, if the beam measurement result of the serving beam is less than the second threshold, it indicates that the beam measurement result of the serving beam is poor. In this case, the terminal device can switch from the serving beam to the target beam. In other words, the first condition can include the beam measurement result of the serving beam being less than the second threshold. Correspondingly, if the beam measurement result of the serving beam is greater than or equal to the second threshold, it indicates that the beam measurement result of the serving beam is good, and in this case, the terminal device may not perform beam switching.

[0082] For example, if the beam measurement result includes RSRP, if the RSRP of the serving beam is less than the second threshold, the beam measurement result of the serving beam is poor. In this case, the terminal device can switch from the serving beam to the target beam. If the RSRP of the serving beam is greater than or equal to the second threshold, the beam measurement result of the serving beam is good. In this case, the terminal device does not need to switch beams.

[0083] For another example, if the beam measurement result of the serving beam is greater than the second threshold, it indicates that the beam measurement result of the serving beam is poor, and the terminal device may switch from the serving beam to the target beam. In other words, the first condition may include the beam measurement result of the serving beam being greater than the second threshold. Correspondingly, if the beam measurement result of the serving beam is less than or equal to the second threshold, it indicates that the beam measurement result of the serving beam is good, and the terminal device may not perform beam switching.

[0084] For example, if the beam measurement result includes BLER, if the BLER of the serving beam is greater than the second threshold, the beam measurement result for the serving beam is poor. In this case, the terminal device can switch from the serving beam to the target beam. Similarly, if the BLER of the serving beam is less than or equal to the second threshold, the beam measurement result for the serving beam is good. In this case, the terminal device may not perform beam switching.

[0085] As previously described, the beam measurement result of the serving beam may include a single beam measurement result of the serving beam. In embodiments of the present application, the measurement result may include multiple beam measurement results for the serving beam, which helps improve beam switching accuracy. The multiple beam measurement results are obtained based on multiple discontinuous measurements in time. Alternatively, the multiple beam measurement results may be obtained based on multiple continuous measurements in time.

[0086] For example, if multiple beam measurement results for the serving beam are all less than the second threshold, this indicates that the beam measurement result for the serving beam is poor. In this case, the terminal device may switch from the serving beam to the target beam. In other words, the first condition may include multiple beam measurement results for the serving beam being less than the second threshold. Correspondingly, if multiple beam measurement results for the serving beam are all greater than or equal to the second threshold, this indicates that the beam measurement result for the serving beam is good, and in this case, the terminal device may not perform beam switching.

[0087] Taking the beam measurement results including RSRP as an example, if the RSRP obtained from multiple measurements of the serving beam is less than the second threshold, it indicates that the beam measurement results of the serving beam are poor. In this case, the terminal device can switch from the serving beam to the target beam. If the RSRP obtained from multiple measurements of the serving beam is greater than or equal to the second threshold, it indicates that the beam measurement results of the serving beam are good. In this case, the terminal device does not need to perform beam switching.

[0088] For another example, if multiple beam measurement results for the serving beam are all greater than the second threshold, this indicates that the beam measurement result for the serving beam is poor, and the terminal device may switch from the serving beam to the target beam. In other words, the first condition may include multiple beam measurement results for the serving beam being greater than the second threshold. Correspondingly, if multiple beam measurement results for the serving beam are all less than or equal to the second threshold, this indicates that the beam measurement result for the serving beam is good, and the terminal device may not perform beam switching.

[0089] For example, if the beam measurement results include BLER, if the BLER obtained from multiple measurements of the serving beam is greater than the second threshold, the beam measurement results for the serving beam are poor. In this case, the terminal device can switch from the serving beam to the target beam. Similarly, if the BLER obtained from multiple measurements of the serving beam is less than or equal to the second threshold, the beam measurement results for the serving beam are good. In this case, the terminal device may not perform beam switching.

[0090] In an embodiment of the present application, the aforementioned multiple beam measurement results may also be beam measurement results obtained from multiple measurements within a first time period. Accordingly, the first condition may include that the multiple beam measurement results of the serving beam within the first time period are all greater than or equal to a second threshold, or that the multiple beam measurement results of the serving beam within the first time period are all less than the second threshold. The first time period may be predefined, preconfigured, or configured by a network device.

[0091] It should be noted that the above-mentioned second threshold can be determined based on pre-configuration information, or based on predefined information, or based on configuration information of the network device, and the embodiments of the present application do not limit this.

[0092] In addition, in the embodiments of the present application, the situation where the beam measurement result is equal to the second threshold is not limited. For example, if the beam measurement result of the serving beam is less than or equal to the second threshold, it can indicate that the quality of the serving beam is poor. For another example, if the beam measurement result of the serving beam is greater than or equal to the second threshold, it can indicate that the quality of the serving beam is poor.

[0093] Taking the first condition as an example of associating the beam measurement result of the serving beam and the beam measurement result of the target serving beam, generally, if the beam measurement result of the target beam is significantly better than (or higher than) the beam measurement result of the serving beam, the terminal device may switch from the serving beam to the target beam. In some implementations, the degree to which the beam measurement result of the target beam is better than the measurement result of the serving beam may be determined based on a third threshold.

[0094] In an embodiment of the present application, the difference between the beam measurement results of the above-mentioned target beam and the beam measurement results of the service beam can be determined based on the difference between the beam measurement results of the target beam and the beam measurement results of the service beam, or can be determined based on the difference between the beam measurement results of the service beam and the beam measurement results of the target beam.

[0095] For example, if the beam measurement result of the target beam is better than the beam measurement result of the serving beam, and the difference between the beam measurement result of the target beam and the beam measurement result of the serving beam is greater than or equal to the third threshold, then it means that the beam measurement result of the target beam is much better than the beam measurement result of the serving beam. At this time, the terminal device can switch from the serving beam to the target beam. That is to say, the first condition may include that the beam measurement result of the target beam is better than the beam measurement result of the serving beam, and the difference between the beam measurement result of the target beam and the beam measurement result of the serving beam is greater than or equal to the third threshold. Correspondingly, if the difference between the beam measurement result of the target beam and the beam measurement result of the serving beam is less than the third threshold, then it means that the beam measurement result of the target beam is less better than the beam measurement result of the serving beam, or in other words, the beam measurement result of the target beam is not much different from the beam measurement result of the serving beam. At this time, the terminal device may not perform beam switching.

[0096] Taking the beam measurement result including RSRP as an example, if the difference between the target beam's RSRP and the serving beam's RSRP is greater than or equal to a third threshold, the target beam's beam measurement result is significantly better than the serving beam's beam measurement result. At this point, the terminal device can switch from the serving beam to the target beam. If the difference between the target beam's RSRP and the serving beam's RSRP is less than the third threshold, the target beam's beam measurement result is similar to the serving beam's beam measurement result. At this point, the terminal device may not perform beam switching.

[0097] For example, if the beam measurement result includes BLER, if the BLER of the serving beam minus the BLER of the target beam is greater than or equal to a third threshold, the beam measurement result of the target beam is significantly better than that of the serving beam. In this case, the terminal device can switch from the serving beam to the target beam. Similarly, if the BLER of the serving beam minus the BLER of the target beam is less than the third threshold, the beam measurement result of the target beam is similar to that of the serving beam. In this case, the terminal device does not need to perform beam switching.

[0098] It should be noted that the above-mentioned third threshold can be determined based on pre-configuration information, or based on predefined information, or based on configuration information of the network device, and the embodiment of the present application does not limit this.

[0099] Furthermore, in the embodiments of the present application, the situation where the beam measurement result is equal to the third threshold is not limited. For example, if the beam measurement result of the target beam is greater than the third threshold, it can indicate that the quality of the target beam is good. Correspondingly, if the difference between the beam measurement result of the target beam and the beam measurement result of the serving beam is equal to the third threshold, it can indicate that the beam measurement result of the target beam and the beam measurement result of the serving beam are similar.

[0100] As previously described, the difference between the beam measurement result of the target beam and the beam measurement result of the serving beam may include a single beam measurement result for the target beam and the serving beam. In an embodiment of the present application, the difference may also include multiple beam measurement results for the target beam and the serving beam, which helps improve the accuracy of beam switching. The multiple beam measurement results are obtained based on multiple measurements that are discontinuous in time. Alternatively, the multiple beam measurement results may be obtained based on multiple measurements that are continuous in time.

[0101] Taking the first condition being associated with the beam measurement results of the beams in the first beam set as an example, in some implementations, the first beam set may include a serving beam and / or a target beam.

[0102] In the embodiment of the present application, the first beam set is not limited. For example, the first beam set may be a beam set corresponding to the TCI state list configured by the network device. For another example, the first beam set may be a beam set corresponding to the spatial relation information (spatial relation info) configured by the network device, or in other words, the first beam set may be associated with the spatial relation information configured by the network device. For another example, the first beam set may be associated with the SSB configured by the network device. For another example, the first beam set may be associated with the SRS configured by the network device. For another example, the first beam set may be associated with the CSI-RS configured by the network device. For another example, the first beam set may be associated with a candidate beam, or in other words, the first beam set may include candidate beams associated with beam switching. For another example, the first beam set may be associated with a candidate reference signal (candidate RS). For another example, the first beam set may include only the beams activated by the network device. Assume that the network device configures 128 TCI states for the terminal device and activates some of the TCI states through MAC CE. At this time, the first beam set may include the beams associated with the activated TCI states, or the terminal device can only measure the beams associated with the activated TCI states.

[0103] The following describes the first condition associated with the beam measurement results in the first beam set in an embodiment of the present application in combination with Examples 1 to 4.

[0104] Example 1, the first condition may include that the number of first beams in the first beam set is greater than a fourth threshold, wherein the first beam may be a beam with better beam measurement results in the first beam set, that is, if the number of first beams with better beam measurement results in the first beam set is greater than the fourth threshold, the terminal device can switch from the service beam to the target beam in the first beam set.

[0105] In some implementations, the first beam in the first beam set may be determined based on a fifth threshold. For example, the first beam is a beam in the first beam set whose beam measurement result is greater than or equal to the fifth threshold. Taking the example where the beam measurement result includes RSRP, the first beam may be a beam in the first beam set whose RSRP is greater than or equal to the fifth threshold. For another example, the first beam is a beam in the first beam set whose beam measurement result is less than or equal to the fifth threshold. Taking the example where the beam measurement result includes BLER, the first beam may be a beam in the first beam set whose BLER is less than or equal to the fifth threshold.

[0106] In some implementations, the first beam set can be associated with a cell. In this way, performing beam switching based on the first condition helps ensure that the first beam set to which the terminal device switches includes a larger number of first beams. Subsequently, the terminal device selects the first beam in the first beam set as the target beam for beam switching. In other words, the terminal device selects the first beam as the target beam for beam switching in the cell where the first beam set is located. This helps avoid frequent cell switching due to the terminal device being unable to determine a suitable target beam for switching in the current cell.

[0107] Example 2: The first condition may include that an average beam measurement result of the beams in the first beam set is good. In some implementations, the average beam measurement result of the first beam set may be determined based on a sixth threshold.

[0108] For example, the first condition may include that an average beam measurement result of the first beam set is greater than or equal to a sixth threshold. Taking the beam measurement result including RSRP as an example, if the average RSRP of the beams in the first beam set is greater than or equal to the sixth threshold, the terminal device may switch to the target beam in the first beam set.

[0109] For another example, the first condition may include that the average beam measurement result of the first beam set is less than or equal to a sixth threshold. Taking the beam measurement result including the BLER as an example, if the average BLER of the beams in the first beam set is less than or equal to the sixth threshold, the terminal device may switch to the target beam in the first beam set.

[0110] Example 3: In the first order associated with the first beam set, the service beam is located after the optimal N beams, and the first order is to sort the beams in the first beam set in descending order of beam measurement results, where N is a positive integer.

[0111] That is, if the order (i.e., the first sequence) of the beams in the first beam set changes, causing the beam measurement result of the serving beam to fall out of the top N beams, that is, the beam measurement result of the serving beam is no longer among the top N beams with better beam quality in the first beam set, the terminal device can switch from the serving beam to the target beam. The target beam can be one of the top N beams with better beam measurement results in the first beam set, or the target beam can be any beam in the first beam set whose beam measurement result exceeds the beam measurement result of the serving beam.

[0112] Example 4: The optimal beam in the first beam set is not the serving beam.

[0113] The optimal beam may be the beam with the best beam measurement result in the first beam set. For example, if the measurement result includes RSRP, the optimal beam may be the beam associated with the maximum RSRP value for each beam in the first beam set. For example, if the measurement result includes BLER, the optimal beam may be the beam associated with the minimum BLER value for each beam in the first beam set.

[0114] Taking the first condition being associated with the first timer as an example, the first condition includes the first timer timing out. That is, in response to the first timer timing out, the terminal device switches from the serving beam to the target beam.

[0115] In some implementations, the first timer is used to record the duration that the terminal device uses the beam, or in other words, the first timer is used to periodically instruct the terminal device to perform beam switching.

[0116] Taking the first timer used to record the duration of the terminal device using the service beam as an example, the start condition of the first timer may include the start time of the terminal device using the service beam, or in other words, the above method also includes: in response to the terminal device using the service beam, the terminal device starts the first timer.

[0117] In some implementations, if the terminal device switches from the target beam to another beam, the terminal device may restart the first timer and continue to perform beam switching when the first timer expires.

[0118] Taking the first condition associating with the location of the terminal device as an example, different locations can have corresponding beams, that is, when the terminal device moves to the target location, the terminal device can switch from the service beam to the target beam, where the target beam corresponds to the target location.

[0119] In the embodiments of the present application, there is no limitation on the implementation of the location of the terminal device. In some implementations, the location of the terminal device can be represented by the location coordinates of the terminal device, and different location coordinates can be associated with one or more beams.

[0120] In some implementations, the location of the terminal device may be represented by the area where the terminal device is located. In this case, different areas may be associated with one or more beams.

[0121] In some implementations, the location of a terminal device can be represented by the distance between the terminal device and a reference location. In this case, different distances can be associated with one or more beams. Furthermore, embodiments of the present application do not specifically limit the reference location. For example, the reference location can be the location of the terminal device last moved. In another example, the reference location can be the location of a network device. In another example, the reference location can be the location of another terminal device.

[0122] It should be noted that the aforementioned correspondence between positions and beams can include one position corresponding to one beam, or one position being associated with multiple beams. Furthermore, the beams corresponding to different positions can be the same or different. If the beams corresponding to different positions are different, then the beams corresponding to different positions can be completely different, or the beams corresponding to different positions can be non-identical.

[0123] Taking the example of a first condition being associated with a first counter, where the first counter is used to indicate the number of times measurements are performed on a target beam and / or a serving beam. Taking the example of the first counter being associated with the number of measurements of a target beam, the first condition may include the number of measurements of the target beam reaching the number of measurements indicated by the counter. Alternatively, if the value of the first counter is M, the first condition may include the number of measurements of the target beam reaching M times, where the value of M may be a positive integer.

[0124] In embodiments of the present application, the first condition associated with the first counter can be combined with any of the first conditions described above. In some implementations, the first condition can be associated with the first counter and the measurement result of the target beam. In other words, the first condition can include that the target beam has been measured M times, and the target beam has a good beam measurement result after M measurements.

[0125] For example, if the M beam measurement results of the target beam are all greater than or equal to the first threshold, it indicates that the beam measurement results of the target beam are good. In this case, the terminal device can switch from the serving beam to the target beam. In other words, the first condition can include that the M beam measurement results of the target beam are all greater than or equal to the first threshold. Correspondingly, if the M beam measurement results of the target beam are all less than the first threshold, it indicates that the beam measurement results of the target beam are poor. In this case, the terminal device may not perform beam switching.

[0126] Taking the beam measurement results including RSRP as an example, if the RSRP obtained from M measurements of the target beam is greater than or equal to the first threshold, the beam measurement results for the target beam are good. In this case, the terminal device can switch from the serving beam to the target beam. If the RSRP obtained from M measurements of the target beam is less than the first threshold, the beam measurement results for the target beam are poor. In this case, the terminal device does not need to switch beams.

[0127] For another example, if the M beam measurement results for the target beam are all less than or equal to the first threshold, then the beam measurement results for the target beam are good, and the terminal device can switch from the serving beam to the target beam. In other words, the first condition can include that the M beam measurement results for the target beam are all less than or equal to the first threshold. Correspondingly, if the M beam measurement results for the target beam are all greater than the first threshold, then the beam measurement results for the target beam are poor. In this case, the terminal device may not perform beam switching.

[0128] Taking the beam measurement results including BLER as an example, if the BLER obtained from M measurements of the target beam is less than or equal to a first threshold, the beam measurement results for the target beam are good, and the terminal device can switch from the serving beam to the target beam. Conversely, if the BLER obtained from M measurements of the target beam is greater than the first threshold, the beam measurement results for the target beam are poor, and the terminal device can avoid performing beam switching.

[0129] In an embodiment of the present application, the M beam measurement results may also be beam measurement results obtained from multiple measurements within a first time period. Accordingly, the first condition may include that the M beam measurement results of the target beam within the first time period are all greater than or equal to a first threshold, or that the M beam measurement results of the target beam within the first time period are all less than the first threshold. The first time period may be predefined, preconfigured, or configured by a network device.

[0130] Taking the number of measurements of the service beam associated with the first counter as an example, the first condition may include that the number of measurements of the service beam reaches the number of measurements indicated by the counter, or in other words, the value of the first counter is X, then the first condition may include that the number of measurements of the service beam reaches X times, where the value of X is a positive integer.

[0131] In some implementations, the first condition may be associated with the first counter and the measurement result of the serving beam. In other words, the first condition may include that the target beam has been measured X times, and the beam measurement result of the serving beam after X measurements is poor.

[0132] For example, if the X beam measurement results of the serving beam are all less than the second threshold, it indicates that the beam measurement results of the serving beam are poor. In this case, the terminal device can switch from the serving beam to the target beam. In other words, the first condition can include that the X beam measurement results of the serving beam are all less than the second threshold. Correspondingly, if the X beam measurement results of the serving beam are all greater than or equal to the second threshold, it indicates that the beam measurement results of the serving beam are good, and in this case, the terminal device may not perform beam switching.

[0133] Taking the beam measurement results including RSRP as an example, if the RSRP obtained from X measurements of the serving beam is less than the second threshold, the beam measurement results for the serving beam are poor. In this case, the terminal device can switch from the serving beam to the target beam. If the RSRP obtained from X measurements of the serving beam is greater than or equal to the second threshold, the beam measurement results for the serving beam are good. In this case, the terminal device does not need to switch beams.

[0134] For another example, if the serving beam's X beam measurement results are all greater than the second threshold, then the serving beam's beam measurement results are poor, and the terminal device may switch from the serving beam to the target beam. In other words, the first condition may include the serving beam's X beam measurement results being all greater than the second threshold. Correspondingly, if the serving beam's X beam measurement results are all less than or equal to the second threshold, then the serving beam's beam measurement results are good, and the terminal device may not perform beam switching.

[0135] Taking the beam measurement results including BLER as an example, if the BLER obtained from X measurements of the serving beam is greater than the second threshold, the beam measurement results for the serving beam are poor. In this case, the terminal device can switch from the serving beam to the target beam. Correspondingly, if the BLER obtained from X measurements of the serving beam is less than or equal to the second threshold, the beam measurement results for the serving beam are good. In this case, the terminal device does not need to perform beam switching.

[0136] In an embodiment of the present application, the X beam measurement results may also be beam measurement results obtained from multiple measurements within a first time period. Accordingly, the first condition may include that the X beam measurement results of the serving beam within the first time period are all greater than or equal to a second threshold, or that the X beam measurement results of the serving beam within the first time period are all less than the second threshold. The first time period may be predefined, preconfigured, or configured by a network device.

[0137] In addition, the above-mentioned first threshold and / or second threshold in the embodiment of the present application can be referred to the introduction above, and the embodiment of the present application is not limited to this.

[0138] The above introduces the first condition in the embodiment of the present application. The following introduces the first operation in the embodiment of the present application in combination with implementation methods 1 to 3.

[0139] Implementation 1: The first operation includes switching from the serving beam to the target beam.

[0140] In some implementations, the terminal device communicates based on the target beam at the first time, or in other words, after the terminal device switches to the target beam, it can communicate using the target beam at the first time. The first time may be a specified time. For example, the first time may be the yth symbol in time slot Y, and accordingly, the terminal device may communicate based on the target beam at the yth symbol in time slot Y. Time slot Y may be the time slot corresponding to the time when the terminal device determines that the first condition is satisfied. Of course, time slot Y may be a time slot after the time when the terminal device determines that the first condition is satisfied (for example, time slot Y may be the Yth time slot after the first condition is satisfied), or time slot Y may be the time slot corresponding to the switching moment when the terminal device switches to the target device. Of course, time slot Y may be a time slot after the above-mentioned switching moment, and the embodiments of the present application do not limit this.

[0141] Of course, in the embodiment of the present application, if the terminal device switches from the serving beam to the target beam, the terminal device can immediately use the target beam. In other words, if the first condition is met, the terminal device can switch from the serving beam to the target beam and immediately use the target beam.

[0142] In some implementations, before step S410, the above method also includes: the terminal device sends first indication information to the network device, and the first indication information is used to instruct the terminal device to switch from the service beam to the target beam, or in other words, the first indication information is used to instruct the terminal device to use the target beam for communication.

[0143] In some implementations, the first indication information may be used to indicate one or more of the following information about the target beam: the cell associated with the target beam; the BWP associated with the target beam, the target beam type (e.g., a transmit beam or a receive beam), the channel associated with the target beam, the TCI framework to which the target beam belongs (including a unified TCI state framework or a non-unified TCI state framework); the target beam is a downlink beam; the target beam is an uplink beam; the target beam is shared by both uplink and downlink; the type of TCI state associated with the target beam (wherein the type of TCI state may include a joint TCI state and a separate TCI state).

[0144] In some implementations, the first indication information may be indicated by explicit signaling. For example, the first indication information may be carried in one or more of the following: MAC CE; UCI; or RRC message.

[0145] In some scenarios, if a terminal device determines a target beam, before the terminal device sends the first indication information, or before the network device configures resources for the terminal device to transmit the first indication information, the beam measurement result of the target beam may decrease. In this case, the terminal device may not communicate based on the target beam. Optionally, the terminal device may no longer send the first indication information. Of course, in an embodiment of the present application, if the beam measurement result of the target beam decreases, the terminal device may also communicate based on the target beam.

[0146] In other implementations, the first indication information may be indicated implicitly. That is, the first indication information may be associated with a target resource (e.g., a configured grant (CG) resource or an SRS configuration). In this case, if communication is performed based on the target resource, it may indicate that the first indication information is indirectly transmitted. The target resource may be preconfigured, predefined, or indicated by a network device. In addition, the communication based on the target resource may include reporting beam measurement results based on the target resource, or sending other information based on the target resource.

[0147] Assuming that the network device configures multiple resource groups for the terminal device, different resources in the multiple resource groups can be associated with different beams. Accordingly, if the terminal device uses a target resource in the multiple resource groups to report a beam measurement result, the beam measurement result is also used to indicate that the target beam is the beam associated with the target resource.

[0148] Taking the target resource including SRS configuration as an example, the SRS configuration can be configured based on each beam, so different SRS configurations can be associated with one beam.

[0149] As previously described, if the terminal device determines to switch to the target beam, the terminal device needs to wait for the target resource corresponding to the target beam so that it can subsequently communicate based on the target resource to indirectly indicate the target beam. However, in some scenarios, when the terminal device is waiting for the target beam, the beam measurement result of the target beam may decrease. At this time, the terminal device may no longer use the target beam to communicate. Optionally, if the terminal device waits for the target resource, the terminal device may no longer communicate based on the target resource. Or the terminal device may continue to communicate based on the target resource, but no longer indirectly indicates the first indication information based on the target resource. Of course, in an embodiment of the present application, if the beam measurement result of the target beam decreases, the terminal device may also communicate based on the target beam.

[0150] In some implementations, the method further includes: in response to sending the first indication information, the terminal device using the target beam for communication. That is, after the terminal device sends the first indication information, the terminal device may immediately use the target beam for communication. Of course, in the embodiment of the present application, after sending the first indication information, the network device may send a first response message to the terminal device in response to the first indication information. In this case, the terminal device may use the target beam for communication after receiving the first response message.

[0151] That is to say, the above method also includes: the terminal device receives a first response message sent by the network device to the first indication information; in response to receiving the first response message, the terminal device communicates based on the target beam.

[0152] In some implementations, the first response message is used to indicate that the terminal device is allowed to switch to the target beam. In other implementations, the first response message is used to indicate that the network device confirms that the terminal device switches to the target beam, or in other words, the first response message is used to indicate that the network device determines that the terminal device uses the target beam for communication, or the first response message is used to indicate that the network device receives the first indication information.

[0153] In some implementations, the first response message may be indicated by explicit signaling. For example, the first response message may be ACK information. For another example, the first response message may be carried on one or more of the following: MAC CE; DCI.

[0154] As described above, if the terminal device receives the first response message, it can use the target beam for communication. In some cases, the beam measurement result of the target beam may decrease before the network device sends the first response message to the terminal device. After that, even if the terminal device receives the first response message, the terminal device may no longer use the target beam for communication. Of course, in the embodiment of the present application, if the beam measurement result of the target beam decreases, the terminal device may also communicate based on the target beam.

[0155] In other implementations, the above-mentioned first response message may be indicated in an implicit manner. That is to say, the first response message may be determined based on the new transmission scheduling or the retransmission scheduling. For example, if after sending the first indication information, the terminal device receives scheduling information for scheduling new transmission data (initial transmission data), at this time, the scheduling information is used to indicate that the network device has received the first indication information, and accordingly, the terminal device can communicate based on the target beam, wherein the new transmission data is the same as the HARQ process to which the first indication information belongs. If after sending the first indication information, the terminal device receives scheduling information for scheduling retransmission data, at this time, the scheduling information is used to indicate that the network device has not received the first indication information, and accordingly, the terminal device cannot communicate based on the target beam.

[0156] As mentioned above, if the first response message is indicated in an implicit manner, in some scenarios, the terminal device may not receive the first response information when the beam measurement result of the target beam decreases. At this time, even if the terminal device obtains the first response message transmitted in an implicit manner, the terminal device may not use the target beam to communicate. For example, if after sending the first indication information, the terminal device receives scheduling information for scheduling new transmission data (initial transmission data), at this time, the scheduling information is used to indicate that the network device has received the first indication information. However, at this time, the terminal device determines that the beam measurement result of the target beam has decreased, then the terminal device may not communicate based on the target beam, wherein the new transmission data is the same as the HARQ process to which the first indication information belongs. Of course, in an embodiment of the present application, if the beam measurement result of the target beam decreases, the terminal device may also communicate based on the target beam.

[0157] In some implementations, the terminal device may send capability information to the network device to indicate whether the terminal device supports beam switching based on the first condition. Of course, in the embodiment of the present application, whether the terminal device supports beam switching based on the first condition may also be configured by the network device.

[0158] Implementation 2: The first operation may include switching from the first beam set to the second beam set.

[0159] In some implementations, the first beam set and the second beam set may be different beam sets. Accordingly, the beams included in the first beam set may differ from those included in the second beam set in part or in whole. The first beam set may include a serving beam. For details about the first beam set, refer to the above and are not repeated here for brevity.

[0160] In this embodiment of the present application, if the terminal device switches to the second beam set, the terminal device can select a target beam in the second beam set. The beam switching method used by the terminal device when selecting a target beam in the second beam set can be found in the description of Implementation 1 above. Of course, in this embodiment of the present application, the terminal device can also use a traditional beam switching method to select a target beam in the second beam set.

[0161] In some implementations, if the beam measurement result of the beam in the first beam set is poor, the terminal device can switch from the first beam set to the second beam set.

[0162] In the embodiments of the present application, the method for determining that the beam measurement results of the beams in the first beam set are poor is not limited. In some implementations, the beam measurement results of the first beam set can be determined based on the measurement results of each beam in the first beam set. The method for determining the beam measurement results of each beam in the first beam set can be similar to the method for determining the beam measurement results of the serving beam described above. In other words, the serving beam described above can be replaced with a beam in the first beam set. For the sake of brevity, this is not further described here.

[0163] In other implementations, the beam measurement results of the first beam set may be determined as a whole using the first beam set. For example, if the average beam measurement results of the beams in the first beam set are poor, the terminal device may switch from the first beam set to the second beam set. For another example, if the number of beams in the first beam set with poor beam measurement results is greater than a threshold, the terminal device may switch from the first beam set to the second beam set. For another example, if the number of beams in the first beam set with good beam measurement results is less than a threshold, the terminal device may switch from the first beam set to the second beam set.

[0164] Implementation method 3: The first operation includes sending first information to the network device.

[0165] In some implementations, the first information includes one or more of the following: a serving cell identifier; a bandwidth part BWP identifier; a control resource set CORESET identifier; indication information for requesting beam switching; information on a target beam recommended by the terminal device; beam measurement results of at least one beam in the first beam set; and beam measurement results of a serving beam.

[0166] Taking the example of the first information including the beam measurement result of the serving beam, it is helpful for the network device to determine whether to instruct the terminal device to perform beam switching based on the beam measurement result of the serving beam. Among them, the beam measurement result of the serving beam can be found in the introduction to the beam measurement result above. For the sake of brevity, it will not be repeated here.

[0167] Taking the example of the first information including indication information for requesting beam switching, the indication information for requesting beam switching can be represented by 1 bit to reduce the overhead required to transmit the information. For example, if the value of this bit is 1, it indicates that the terminal device requests beam switching. Conversely, if the value of this bit is 0, it indicates that the terminal device does not request beam switching. For another example, if the value of this bit is 0, it indicates that the terminal device requests beam switching. Conversely, if the value of this bit is 1, it indicates that the terminal device does not request beam switching.

[0168] Take the example where the first information includes a beam measurement result of at least one beam in the first beam set, wherein the first beam set and / or the beam measurement result can be referred to the above introduction.

[0169] Taking the example in which the first information includes information about the target beam recommended by the terminal device, in some implementations, the information about the recommended target beam includes one or more of the following: the quasi co-location (QCL) type associated with the recommended target beam; the identifier of the recommended target beam; the cell associated with the recommended target beam; the BWP of the recommended target beam; the beam type of the recommended target beam; the channel associated with the recommended target beam; the TCI framework to which the recommended target beam belongs; the TCI state type associated with the recommended target beam; and the number of TCI states associated with the recommended target beam.

[0170] The QCL type associated with the target beam suggested above may include one of QCL type A, QCL type B, QCL type C, and QCL type D.

[0171] The beam types of the target beam suggested above may include a transmit beam and a receive beam.

[0172] The channels associated with the above-mentioned target beam may include one or more of the following: PDCCH; PDSCH; PUCCH; PUSCH; PBCH.

[0173] The TCI framework to which the target beam proposed above belongs may include a unified TCI state framework or a non-unified TCI state framework.

[0174] The TCI state types associated with the target beam suggested above may include a joint TCI state and a separate TCI state.

[0175] The number of TCI states associated with the target beam is as follows: For example, the number of TCI states associated with the target beam as described above may be 1. For another example, the number of TCI states associated with the target beam as described above may be multiple.

[0176] In some implementations, the suggested target beam may be indicated by explicit signaling. For example, the suggested target beam may be carried in one or more of the following: MAC CE; UCI; or RRC message.

[0177] In other implementations, the suggested target beam may be implicitly indicated. That is, the suggested target beam may be associated with a target resource (e.g., a CG resource or SRS configuration). In this case, communication based on the target resource may indirectly indicate the suggested target beam. The target resource may be preconfigured, predefined, or indicated by a network device.

[0178] In some implementations, the above method also includes: the network device sends second indication information to the terminal device, the second indication information is used to indicate whether the terminal device is allowed to perform beam switching; and / or the second indication information carries information of the target beam.

[0179] In some implementations, the second indication information may be information indicating / activating the TCI state associated with the target beam. For example, the second indication information may be a MAC CE for unified TCI state activation / deactivation MAC CE. For another example, the second indication information may be a DCI of format 1_1 or 1_2. For another example, the second indication information may be a MAC CE for UE-specific PDCCH TCI state indication (TCI state Indication for UE-specific PDCCH MAC CE). For another example, the second indication information may be a MAC CE for TCI state activation or deactivation for UE-specific PDSCH (TCI States activation / deactivation for UE-specific PDSCH MAC CE). For another example, the second indication information may be a TCI state indication MAC CE for a serving cell set based on SRS (serving cell set based SRS TCI state indication MAC CE). For another example, the second indication information may be a MAC CE for indicating SP / AP SRS TCI state indication (SP / AP SRS TCI state indication MAC CE). For another example, the second indication information may be a MAC CE for enhanced TCI states activation / deactivation for UE-specific PDSCH MAC CE. Of course, in the embodiment of the present application, the above-mentioned MAC CE may be a newly introduced MAC CE in a future communication system. Furthermore, the above-mentioned DCI may be a newly introduced DCI in a future communication system.

[0180] In some implementations, the method further includes: the terminal device sending a second response message to the network device in response to the second indication information. The second response message includes one or more of the following: new transmission scheduling information for the target HARQ process; information indicating whether the terminal device communicates based on the target beam; and information about the beam used by the terminal device.

[0181] In some implementations, the target HARQ process is the HARQ process of the first information. Accordingly, if the second response message includes new transmission scheduling information of the target HARQ process, it indicates that the terminal device successfully received the second indication information. Correspondingly, if the second response message includes retransmission scheduling information of the target HARQ process, it indicates that the terminal device did not successfully receive the second indication information.

[0182] In some implementations, the information about the beam used by the terminal device indicated in the second response message may be information about the target beam. In some scenarios, during interaction between the network device and the terminal device, the beam measurement result of the target beam may deteriorate. In this case, the terminal device may select another beam for communication. Therefore, the information about the beam used by the terminal device indicated in the second response message may be information about another beam.

[0183] In some implementations, before the terminal device performs the first operation, the service beam and / or the target beam belongs to a first beam set, and the method further includes: the terminal device receives configuration information sent by the network device, and the configuration information is used to configure the first beam set.

[0184] In some implementations, the configuration information includes one or more of the following: TCI status associated with the first beam set; spatial-related information associated with the first beam set; reference signal information associated with the first beam set; candidate beam information in the first beam set; and candidate reference signal information associated with the first beam set.

[0185] In addition, in the embodiment of the present application, measuring the beam can be replaced by tracking the beam, or monitoring the beam, etc. Of course, measuring the beam can also be replaced by other terms with similar meanings. The embodiment of the present application is not limited to this.

[0186] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 4 . The device embodiment of the present application is described in detail below in conjunction with Figures 5 to 7 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0187] FIG5 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 500 shown in FIG5 includes: a processing unit 510 .

[0188] If the first condition is met, the processing unit 510 is used to perform a first operation, wherein the first operation includes one of the following: switching from a serving beam to a target beam; sending first information to a network device, wherein the first information includes a beam measurement result.

[0189] In some implementations, the first condition is associated with one or more of: a first timer; the location of the terminal device; the beam measurement result of the service beam; the beam measurement result of the target beam; a first counter, the first counter being used to indicate the number of times the target beam and / or the service beam is measured; the beam measurement result of the beams in a first beam set, the first beam set including the target beam and / or the service beam.

[0190] In some implementations, if the first condition is associated with a beam measurement result of the target beam, the first condition includes that the beam measurement result of the target beam is greater than a first threshold, or the first condition includes that the beam measurement result of the target beam is less than a first threshold.

[0191] In some implementations, if the first condition is associated with the beam measurement result of the service beam, the first condition includes that the beam measurement result of the service beam is less than or equal to a second threshold, or that the beam measurement result of the service beam is less than or equal to the second threshold.

[0192] In some implementations, if the first condition is associated with the beam measurement result of the service beam and the beam measurement result of the target service beam, the first condition includes that the beam measurement result of the target beam is higher than the beam measurement result of the service beam, and the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is greater than a third threshold, or the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is less than or equal to the third threshold.

[0193] In some implementations, if the first condition is associated with the beam measurement results of the beams in the first beam set, the first condition includes one or more of the following: the number of first beams in the first beam set is greater than a fourth threshold, the first beam is a beam in the first beam set whose beam measurement result is greater than or equal to a fifth threshold, or the first beam is a beam in the first beam set whose beam measurement result is less than a fifth threshold; the average beam measurement result of the beams in the first beam set is greater than or equal to a sixth threshold; the average beam measurement result of the beams in the first beam set is less than the sixth threshold; the service beam is located after the optimal N beams in the first order associated with the first beam set, and the first order is to sort the beams in the first beam set in descending order of the beam measurement results; the optimal beam in the first beam set is not the service beam.

[0194] In some implementations, if the first condition is associated with the first timer, the first condition includes expiration of the first timer.

[0195] In some implementations, if the first operation includes switching from the serving beam to the target beam, the processing unit is configured to: communicate based on the target beam at a first time, where the first time is predefined.

[0196] In some implementations, if the first operation includes switching from the service beam to the target beam, the terminal device further includes: a first sending unit, configured to send first indication information to a network device, wherein the first indication information is configured to instruct the terminal device to switch from the service beam to the target beam.

[0197] In some implementations, in response to sending the first indication information, the processing unit is configured to use the target beam for communication.

[0198] In some implementations, the terminal device further includes: a first receiving unit, configured to receive a first response message sent by a network device to the first indication information, wherein the first response message is used to indicate that the terminal device is allowed to switch to the target beam, or the first response message is used to indicate that the network device confirms that the terminal device has switched to the target beam.

[0199] In some implementations, in response to receiving the first response message, the processing unit is configured to communicate based on the target beam.

[0200] In some implementations, if the first operation includes sending the first information to a network device, the first information includes one or more of the following: a serving cell identifier; a bandwidth part BWP identifier; a control resource set CORESET identifier; indication information for requesting beam switching; information on a target beam recommended by the terminal device; and beam measurement results of at least one beam in a first beam set, the first beam set including the target beam and / or the serving beam.

[0201] In some implementations, if the first information includes information of the target beam recommended by the terminal device, the information of the recommended target beam includes one or more of the following: the QCL type associated with the recommended target beam; the identifier of the recommended target beam; the cell associated with the recommended target beam; the BWP of the recommended target beam; the beam type of the recommended target beam; the channel associated with the recommended target beam; the TCI framework to which the recommended target beam belongs; the TCI state type associated with the recommended target beam; and the number of TCI states associated with the recommended target beam.

[0202] In some implementations, the terminal device also includes: a second receiving unit, used to receive second indication information sent by a network device, the second indication information being used to indicate whether the terminal device is allowed to perform beam switching; and / or the second indication information carries information of the target beam.

[0203] In some implementations, the terminal device also includes: a second sending unit, used to send a second response message to the network device for the second indication information, the second response message including one or more of the following: new transmission scheduling information of the target HARQ process, the target HARQ process is the HARQ process of the first information; information for indicating whether the terminal device communicates based on the target beam; information on the beam used by the terminal device.

[0204] In some implementations, before the terminal device performs the first operation, the service beam and / or the target beam belongs to a first beam set, and the terminal device also includes: a third receiving unit, used to receive configuration information sent by a network device, and the configuration information is used to configure the first beam set.

[0205] In some implementations, the configuration information includes one or more of the following: TCI status associated with the first beam set; spatial-related information associated with the first beam set; reference signal information associated with the first beam set; candidate beam information in the first beam set; and candidate reference signal information associated with the first beam set.

[0206] FIG6 is a schematic diagram of a network device according to an embodiment of the present application. The network device shown in FIG6 may include: a receiving unit 610 .

[0207] A receiving unit is used to receive target information sent by a terminal device, and the target information includes one of the following: first indication information, the first indication information is used to instruct the terminal device to switch from a service beam to a target beam; first information, the first information includes a beam measurement result, and the triggering of the first information is based on a first condition.

[0208] In some implementations, the first condition is associated with one or more of: a first timer; the location of the terminal device; the beam measurement result of the service beam; the beam measurement result of the target beam; a first counter, the first counter being used to indicate the number of times the target beam and / or the service beam is measured; the beam measurement result of the beams in a first beam set, the first beam set including the target beam and / or the service beam.

[0209] In some implementations, if the first condition is associated with a beam measurement result of the target beam, the first condition includes that the beam measurement result of the target beam is greater than a first threshold, or the first condition includes that the beam measurement result of the target beam is less than a first threshold.

[0210] In some implementations, if the first condition is associated with the beam measurement result of the service beam, the first condition includes that the beam measurement result of the service beam is less than or equal to a second threshold, or that the beam measurement result of the service beam is less than or equal to the second threshold.

[0211] In some implementations, if the first condition is associated with the beam measurement result of the service beam and the beam measurement result of the target service beam, the first condition includes that the beam measurement result of the target beam is higher than the beam measurement result of the service beam, and the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is greater than a third threshold, or the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is less than or equal to the third threshold.

[0212] In some implementations, if the first condition is associated with the beam measurement results of the beams in the first beam set, the first condition includes one or more of the following: the number of first beams in the first beam set is greater than a fourth threshold, the first beam is a beam in the first beam set whose beam measurement result is greater than or equal to a fifth threshold, or the first beam is a beam in the first beam set whose beam measurement result is less than a fifth threshold; the average beam measurement result of the beams in the first beam set is greater than or equal to a sixth threshold; the service beam is located after the optimal N beams in the first order associated with the first beam set, and the first order is to sort the beams in the first beam set in descending order of the beam measurement results; the optimal beam in the first beam set is not the service beam.

[0213] In some implementations, if the first condition is associated with the first timer, the first condition includes expiration of the first timer.

[0214] In some implementations, the sending of the first indication information is used to trigger the terminal device to switch from the serving beam to the target beam.

[0215] In some implementations, if the target information includes the first indication information, the receiving unit is further used to: receive a first response message sent by the terminal device to the first indication information, the first response message being used to indicate that the terminal device is allowed to switch to the target beam, or the first response message being used to indicate that the network device confirms that the terminal device has switched to the target beam.

[0216] In some implementations, receipt of the first response message is used to trigger the terminal device to switch from the serving beam to the target beam.

[0217] In some implementations, if the target information includes the first information, the first information includes one or more of the following: a serving cell identifier; a bandwidth part BWP identifier; a control resource set CORESET identifier; indication information for requesting beam switching; information on the target beam recommended by the terminal device; and beam measurement results of at least one beam in a first beam set, the first beam set including the target beam and / or the serving beam.

[0218] In some implementations, if the first information includes information of the target beam recommended by the terminal device, the information of the recommended target beam includes one or more of the following: the QCL type associated with the recommended target beam; the identifier of the recommended target beam; the cell associated with the recommended target beam; the BWP of the recommended target beam; the beam type of the recommended target beam; the channel associated with the recommended target beam; the TCI framework to which the recommended target beam belongs; the TCI state type associated with the recommended target beam; and the number of TCI states associated with the recommended target beam.

[0219] In some implementations, the network device further includes: a first sending unit, used to send second indication information to the terminal device, the second indication information being used to indicate whether the terminal device is allowed to perform beam switching; and / or the second indication information carries information of the target beam.

[0220] In some implementations, the receiving unit is further used to: receive a second response message sent by the terminal device to the second indication information, the second response message including one or more of the following: new transmission scheduling information of the target HARQ process, the target HARQ process is the HARQ process of the first information; information used to indicate whether the terminal device communicates based on the target beam; information about the beam used by the terminal device.

[0221] In some implementations, the service beam and / or the target beam belongs to a first beam set, and the network device further includes: a second sending unit, configured to send configuration information to the terminal device, wherein the configuration information is used to configure the first beam set.

[0222] In some implementations, the configuration information includes one or more of the following: TCI status associated with the first beam set; spatial-related information associated with the first beam set; reference signal information associated with the first beam set; candidate beam information in the first beam set; and candidate reference signal information associated with the first beam set.

[0223] In an optional embodiment, the processing unit 510 may be a processor 710. The terminal device 700 may further include a transceiver 730 and a memory 720, as specifically shown in FIG7 .

[0224] In an optional embodiment, the receiving unit 610 may be a transceiver 730. The network device 800 may further include a processor 710 and a memory 720, as specifically shown in FIG7 .

[0225] Figure 7 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 7 indicate that the unit or module is optional. The device 700 may be used to implement the method described in the above method embodiment. The device 700 may be a chip, a terminal device, or a network device.

[0226] The device 700 may include one or more processors 710. The processor 710 may support the device 700 to implement the method described in the method embodiment above. The processor 710 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, a discrete gate or transistor logic device, a discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0227] The apparatus 700 may further include one or more memories 720. The memories 720 store programs that can be executed by the processor 710, causing the processor 710 to perform the methods described in the above method embodiments. The memories 720 may be independent of the processor 710 or integrated into the processor 710.

[0228] The apparatus 700 may further include a transceiver 730. The processor 710 may communicate with other devices or chips via the transceiver 730. For example, the processor 710 may transmit and receive data with other devices or chips via the transceiver 730.

[0229] 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.

[0230] 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.

[0231] 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.

[0232] It should be understood that in the embodiment of the present application, the above-mentioned beam can be a transmitting beam, which can also be called a "spatial transmit filter". Of course, in the embodiment of the present application, the above-mentioned beam can be a receiving beam, which can also be called a "spatial receive filter". In addition, in the embodiment of the present application, the above-mentioned beam can be represented by a beam-associated reference signal, that is, in the embodiment of the present application, the beam can be replaced by a reference signal. Among them, the reference signal can be any reference signal specified in a known communication system, for example, SSB, or CSI-RS. For example, SRS. For example, PDCCH DMRS. Of course, in the embodiment of the present application, the reference signal can also be a new reference signal introduced in future communication systems.

[0233] In addition, the terms "system" and "network" can be used interchangeably in this application. 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" 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" and any variations thereof are intended to cover non-exclusive inclusions.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] 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., including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0238] 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.

[0239] 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.

[0240] 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.

[0241] 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.

[0242] 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.

[0243] 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.

[0244] 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)).

[0245] 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 wireless communication method, characterized in that: include: If the first condition is met, the terminal device performs a first operation, wherein the first operation includes one of the following: Switching from a serving beam to a target beam; First information is sent to a network device, where the first information includes a beam measurement result.

2. The method according to claim 1, characterized in that The first condition is associated with one or more of the following: First timer; The location of the terminal device; A beam measurement result of the serving beam; A beam measurement result of the target beam; a first counter, the first counter being used to indicate the number of times the target beam and / or the serving beam is measured; The beam measurement results of the beams in the first beam set include the target beam and / or the serving beam.

3. The method according to claim 1 or 2, characterized in that If the first condition is associated with the beam measurement result of the target beam, the first condition includes that the beam measurement result of the target beam is greater than a first threshold, or the first condition includes that the beam measurement result of the target beam is less than a first threshold.

4. The method according to any one of claims 1 to 3, characterized in that If the first condition is associated with the beam measurement result of the service beam, the first condition includes that the beam measurement result of the service beam is less than or equal to a second threshold, or that the beam measurement result of the service beam is less than or equal to the second threshold.

5. The method according to any one of claims 1 to 4, characterized in that If the first condition is associated with the beam measurement result of the service beam and the beam measurement result of the target service beam, the first condition includes that the beam measurement result of the target beam is higher than the beam measurement result of the service beam, and the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is greater than a third threshold, or the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is less than or equal to the third threshold.

6. The method according to any one of claims 1 to 5, characterized in that If the first condition is associated with a beam measurement result of a beam in the first beam set, the first condition includes one or more of the following: The number of first beams in the first beam set is greater than a fourth threshold, the first beam is a beam in the first beam set whose beam measurement result is greater than or equal to a fifth threshold, or the first beam is a beam in the first beam set whose beam measurement result is less than a fifth threshold; An average beam measurement result of the beams in the first beam set is greater than or equal to a sixth threshold; An average beam measurement result of the beams in the first beam set is less than a sixth threshold; The serving beam is located after the optimal N beams in a first order associated with the first beam set, and the first order is to sort the beams in the first beam set in descending order of beam measurement results; The best beam in the first set of beams is not the serving beam.

7. The method according to any one of claims 1 to 6, characterized in that If the first condition is associated with the first timer, the first condition includes expiration of the first timer.

8. The method according to any one of claims 1 to 7, characterized in that If the first operation includes switching from the serving beam to the target beam, the method further includes: The terminal device communicates based on the target beam at a first time, and the first time is predefined.

9. The method according to any one of claims 1 to 8, characterized in that If the first operation includes switching from the serving beam to the target beam, the method further includes: The terminal device sends first indication information to the network device, where the first indication information is used to instruct the terminal device to switch from the service beam to the target beam.

10. The method according to claim 9, characterized in that The method further comprises: In response to sending the first indication information, the terminal device communicates using the target beam.

11. The method according to claim 9, characterized in that The method further comprises: The terminal device receives a first response message sent by the network device for the first indication information, wherein the first response message is used to indicate that the terminal device is allowed to switch to the target beam, or the first response message is used to indicate that the network device confirms that the terminal device switches to the target beam.

12. The method according to claim 11, characterized in that The method further comprises: In response to receiving the first response message, the terminal device communicates based on the target beam.

13. The method according to any one of claims 1 to 7, characterized in that If the first operation includes sending the first information to a network device, the first information includes one or more of the following: Serving cell identifier; Bandwidth part BWP logo; Control resource set CORESET identifier; Instruction information for requesting beam switching; Information of the target beam suggested by the terminal device; A beam measurement result of at least one beam in a first beam set, wherein the first beam set includes the target beam and / or the serving beam.

14. The method according to claim 13, characterized in that If the first information includes information of a target beam suggested by the terminal device, the suggested target beam information includes one or more of the following: The type of QCL associated with the proposed target beam; an identification of the proposed target beam; The cell associated with the proposed target beam; the BWP of the proposed target beam; a beam type of the proposed target beam; an associated channel of the proposed target beam; The TCI framework to which the proposed target beam belongs; The TCI state type associated with the proposed target beam; The number of TCI states associated with the proposed target beam.

15. The method according to claim 13 or 14, characterized in that The method further comprises: The terminal device receives second indication information sent by the network device, where the second indication information is used to indicate whether the terminal device is allowed to perform beam switching; and / or The second indication information carries information of the target beam.

16. The method according to claim 15, characterized in that The method further comprises: The terminal device sends a second response message to the network device for the second indication information, where the second response message includes one or more of the following: New transmission scheduling information of a target HARQ process, where the target HARQ process is the HARQ process of the first information; Information used to indicate whether the terminal device communicates based on the target beam; Information about the beam used by the terminal device.

17. The method according to any one of claims 1 to 16, characterized in that Before the terminal device performs the first operation, the serving beam and / or the target beam belongs to a first beam set, and the method further includes: The terminal device receives configuration information sent by a network device, where the configuration information is used to configure the first beam set.

18. The method according to claim 17, characterized in that The configuration information includes one or more of the following: a TCI state associated with the first beam set; The spatial related information associated with the first beam set; Reference signal information associated with the first beam set; candidate beam information in the first beam set; The candidate reference signal information associated with the first beam set.

19. A wireless communication method, characterized in that: include: The network device receives target information sent by the terminal device, where the target information includes one of the following: First indication information, where the first indication information is used to instruct the terminal device to switch from a serving beam to a target beam; The first information includes a beam measurement result, and the triggering of the first information is based on a first condition.

20. The method of claim 19, wherein: The first condition is associated with one or more of the following: First timer; The location of the terminal device; A beam measurement result of the serving beam; A beam measurement result of the target beam; a first counter, the first counter being used to indicate the number of times the target beam and / or the serving beam is measured; The beam measurement results of the beams in the first beam set include the target beam and / or the serving beam.

21. The method according to claim 19 or 20, characterized in that If the first condition is associated with the beam measurement result of the target beam, the first condition includes that the beam measurement result of the target beam is greater than a first threshold, or the first condition includes that the beam measurement result of the target beam is less than a first threshold.

22. The method according to any one of claims 19 to 21, characterized in that If the first condition is associated with the beam measurement result of the service beam, the first condition includes that the beam measurement result of the service beam is less than or equal to a second threshold, or that the beam measurement result of the service beam is less than or equal to the second threshold.

23. The method according to any one of claims 19 to 22, characterized in that If the first condition is associated with the beam measurement result of the service beam and the beam measurement result of the target service beam, the first condition includes that the beam measurement result of the target beam is higher than the beam measurement result of the service beam, and the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is greater than a third threshold, or the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is less than or equal to the third threshold.

24. The method according to any one of claims 19 to 23, characterized in that If the first condition is associated with a beam measurement result of a beam in the first beam set, the first condition includes one or more of the following: The number of first beams in the first beam set is greater than a fourth threshold, the first beam is a beam in the first beam set whose beam measurement result is greater than or equal to a fifth threshold, or the first beam is a beam in the first beam set whose beam measurement result is less than a fifth threshold; An average beam measurement result of the beams in the first beam set is greater than or equal to a sixth threshold; The serving beam is located after the optimal N beams in a first order associated with the first beam set, and the first order is to sort the beams in the first beam set in descending order of beam measurement results; The best beam in the first set of beams is not the serving beam.

25. The method according to any one of claims 19 to 24, characterized in that If the first condition is associated with the first timer, the first condition includes expiration of the first timer.

26. The method according to any one of claims 19 to 25, characterized in that The sending of the first indication information is used to trigger the terminal device to switch from the serving beam to the target beam.

27. The method according to any one of claims 19 to 26, characterized in that If the target information includes the first indication information, the method further includes: The network device receives a first response message sent by the terminal device for the first indication information, wherein the first response message is used to indicate that the terminal device is allowed to switch to the target beam, or the first response message is used to indicate that the network device confirms that the terminal device switches to the target beam.

28. The method of claim 27, wherein: Receipt of the first response message is used to trigger the terminal device to switch from the serving beam to the target beam.

29. The method of claim 19, wherein: If the target information includes the first information, the first information includes one or more of the following: Serving cell identifier; Bandwidth part BWP logo; Control resource set CORESET identifier; Instruction information for requesting beam switching; Information of the target beam suggested by the terminal device; A beam measurement result of at least one beam in a first beam set, wherein the first beam set includes the target beam and / or the serving beam.

30. The method of claim 29, wherein: If the first information includes information of a target beam suggested by the terminal device, the suggested target beam information includes one or more of the following: The type of QCL associated with the proposed target beam; an identification of the proposed target beam; The cell associated with the proposed target beam; the BWP of the proposed target beam; a beam type of the proposed target beam; an associated channel of the proposed target beam; The TCI framework to which the proposed target beam belongs; The TCI state type associated with the proposed target beam; The number of TCI states associated with the proposed target beam.

31. The method according to claim 29 or 30, characterized in that The method further comprises: The network device sends second indication information to the terminal device, where the second indication information is used to indicate whether the terminal device is allowed to perform beam switching; and / or The second indication information carries information of the target beam.

32. The method of claim 31, wherein: The method further comprises: The network device receives a second response message sent by the terminal device for the second indication information, where the second response message includes one or more of the following: New transmission scheduling information of a target HARQ process, where the target HARQ process is the HARQ process of the first information; Information used to indicate whether the terminal device communicates based on the target beam; Information about the beam used by the terminal device.

33. The method according to any one of claims 19 to 32, characterized in that The serving beam and / or the target beam belongs to a first beam set, and the method further includes: The network device sends configuration information to the terminal device, where the configuration information is used to configure the first beam set.

34. The method of claim 33, wherein: The configuration information includes one or more of the following: a TCI state associated with the first beam set; The spatial related information associated with the first beam set; Reference signal information associated with the first beam set; candidate beam information in the first beam set; The candidate reference signal information associated with the first beam set.

35. A terminal device, characterized in that: include: If the first condition is met, the processing unit is configured to perform a first operation, wherein the first operation includes one of the following: Switching from a serving beam to a target beam; First information is sent to a network device, where the first information includes a beam measurement result.

36. The terminal device according to claim 35, characterized in that: The first condition is associated with one or more of the following: First timer; The location of the terminal device; A beam measurement result of the serving beam; A beam measurement result of the target beam; a first counter, the first counter being used to indicate the number of times the target beam and / or the serving beam is measured; The beam measurement results of the beams in the first beam set include the target beam and / or the serving beam.

37. The terminal device according to claim 35 or 36, characterized in that: If the first condition is associated with the beam measurement result of the target beam, the first condition includes that the beam measurement result of the target beam is greater than a first threshold, or the first condition includes that the beam measurement result of the target beam is less than a first threshold.

38. The terminal device according to any one of claims 35 to 37, characterized in that: If the first condition is associated with the beam measurement result of the service beam, the first condition includes that the beam measurement result of the service beam is less than or equal to a second threshold, or that the beam measurement result of the service beam is less than or equal to the second threshold.

39. The terminal device according to any one of claims 35 to 38, characterized in that: If the first condition is associated with the beam measurement result of the service beam and the beam measurement result of the target service beam, the first condition includes that the beam measurement result of the target beam is higher than the beam measurement result of the service beam, and the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is greater than a third threshold, or the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is less than or equal to the third threshold.

40. The terminal device according to any one of claims 35 to 39, characterized in that: If the first condition is associated with a beam measurement result of a beam in the first beam set, the first condition includes one or more of the following: The number of first beams in the first beam set is greater than a fourth threshold, the first beam is a beam in the first beam set whose beam measurement result is greater than or equal to a fifth threshold, or the first beam is a beam in the first beam set whose beam measurement result is less than a fifth threshold; An average beam measurement result of the beams in the first beam set is greater than or equal to a sixth threshold; An average beam measurement result of the beams in the first beam set is less than a sixth threshold; The serving beam is located after the optimal N beams in a first order associated with the first beam set, and the first order is to sort the beams in the first beam set in descending order of beam measurement results; The best beam in the first set of beams is not the serving beam.

41. The terminal device according to any one of claims 35 to 40, characterized in that: If the first condition is associated with the first timer, the first condition includes expiration of the first timer.

42. The terminal device according to any one of claims 35 to 41, characterized in that: If the first operation includes switching from the serving beam to the target beam, the processing unit is configured to: Communicating based on the target beam at a first time, where the first time is predefined.

43. The terminal device according to any one of claims 35 to 42, characterized in that: If the first operation includes switching from the serving beam to the target beam, the terminal device further includes: The first sending unit is used to send first indication information to the network device, where the first indication information is used to instruct the terminal device to switch from the service beam to the target beam.

44. The terminal device according to claim 43, characterized in that: In response to sending the first indication information, the processing unit is configured to use the target beam for communication.

45. The terminal device according to claim 43, characterized in that The terminal device further includes: The first receiving unit is used to receive a first response message sent by a network device to the first indication information, wherein the first response message is used to indicate that the terminal device is allowed to switch to the target beam, or the first response message is used to indicate that the network device confirms that the terminal device switches to the target beam.

46. ​​The terminal device according to claim 45, characterized in that: In response to receiving the first response message, the processing unit is configured to communicate based on the target beam.

47. The terminal device according to any one of claims 35 to 41, characterized in that: If the first operation includes sending the first information to a network device, the first information includes one or more of the following: Serving cell identifier; Bandwidth part BWP logo; Control resource set CORESET identifier; Instruction information for requesting beam switching; Information of the target beam suggested by the terminal device; A beam measurement result of at least one beam in a first beam set, wherein the first beam set includes the target beam and / or the serving beam.

48. The terminal device according to claim 47, characterized in that: If the first information includes information of a target beam suggested by the terminal device, the suggested target beam information includes one or more of the following: The type of QCL associated with the proposed target beam; an identification of the proposed target beam; The cell associated with the proposed target beam; the BWP of the proposed target beam; a beam type of the proposed target beam; an associated channel of the proposed target beam; The TCI framework to which the proposed target beam belongs; The TCI state type associated with the proposed target beam; The number of TCI states associated with the proposed target beam.

49. The terminal device according to claim 47 or 48, characterized in that: The terminal device further includes: A second receiving unit is used to receive second indication information sent by a network device, where the second indication information is used to indicate whether the terminal device is allowed to perform beam switching; and / or The second indication information carries information of the target beam.

50. The terminal device according to claim 49, characterized in that: The terminal device further includes: A second sending unit is configured to send a second response message to the network device in response to the second indication information, where the second response message includes one or more of the following: New transmission scheduling information of a target HARQ process, where the target HARQ process is the HARQ process of the first information; Information used to indicate whether the terminal device communicates based on the target beam; Information about the beam used by the terminal device.

51. The terminal device according to any one of claims 35 to 50, characterized in that: Before the terminal device performs the first operation, the serving beam and / or the target beam belongs to a first beam set, and the terminal device further includes: The third receiving unit is used to receive configuration information sent by a network device, where the configuration information is used to configure the first beam set.

52. The terminal device according to claim 51, characterized in that: The configuration information includes one or more of the following: a TCI state associated with the first beam set; The spatial related information associated with the first beam set; Reference signal information associated with the first beam set; candidate beam information in the first beam set; The candidate reference signal information associated with the first beam set.

53. A network device, characterized in that: include: A receiving unit is used to receive target information sent by a terminal device, where the target information includes one of the following: First indication information, where the first indication information is used to instruct the terminal device to switch from a serving beam to a target beam; The first information includes a beam measurement result, and the triggering of the first information is based on a first condition.

54. The network device according to claim 53, characterized in that The first condition is associated with one or more of the following: First timer; The location of the terminal device; A beam measurement result of the serving beam; A beam measurement result of the target beam; a first counter, the first counter being used to indicate the number of times the target beam and / or the serving beam is measured; The beam measurement results of the beams in the first beam set include the target beam and / or the serving beam.

55. The network device according to claim 53 or 54, characterized in that: If the first condition is associated with the beam measurement result of the target beam, the first condition includes that the beam measurement result of the target beam is greater than a first threshold, or the first condition includes that the beam measurement result of the target beam is less than a first threshold.

56. The network device according to any one of claims 53 to 55, characterized in that: If the first condition is associated with the beam measurement result of the service beam, the first condition includes that the beam measurement result of the service beam is less than or equal to a second threshold, or that the beam measurement result of the service beam is less than or equal to the second threshold.

57. The network device according to any one of claims 53 to 56, characterized in that: If the first condition is associated with the beam measurement result of the service beam and the beam measurement result of the target service beam, the first condition includes that the beam measurement result of the target beam is higher than the beam measurement result of the service beam, and the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is greater than a third threshold, or the difference between the beam measurement result of the target beam and the beam measurement result of the service beam is less than or equal to the third threshold.

58. The network device according to any one of claims 53 to 57, characterized in that: If the first condition is associated with a beam measurement result of a beam in the first beam set, the first condition includes one or more of the following: The number of first beams in the first beam set is greater than a fourth threshold, the first beam is a beam in the first beam set whose beam measurement result is greater than or equal to a fifth threshold, or the first beam is a beam in the first beam set whose beam measurement result is less than a fifth threshold; An average beam measurement result of the beams in the first beam set is greater than or equal to a sixth threshold; The serving beam is located after the optimal N beams in a first order associated with the first beam set, and the first order is to sort the beams in the first beam set in descending order of beam measurement results; The best beam in the first set of beams is not the serving beam.

59. The network device according to any one of claims 53 to 58, characterized in that: If the first condition is associated with the first timer, the first condition includes expiration of the first timer.

60. The network device according to any one of claims 53 to 59, characterized in that: The sending of the first indication information is used to trigger the terminal device to switch from the serving beam to the target beam.

61. The network device according to any one of claims 53 to 60, characterized in that: If the target information includes the first indication information, the receiving unit is further configured to: Receive a first response message sent by the terminal device to the first indication information, wherein the first response message is used to indicate that the terminal device is allowed to switch to the target beam, or the first response message is used to indicate that the network device confirms that the terminal device switches to the target beam.

62. The network device according to claim 61, characterized in that Receipt of the first response message is used to trigger the terminal device to switch from the serving beam to the target beam.

63. The network device according to claim 53, characterized in that If the target information includes the first information, the first information includes one or more of the following: Serving cell identifier; Bandwidth part BWP logo; Control resource set CORESET identifier; Instruction information for requesting beam switching; Information of the target beam suggested by the terminal device; A beam measurement result of at least one beam in a first beam set, wherein the first beam set includes the target beam and / or the serving beam.

64. The network device according to claim 63, characterized in that If the first information includes information of a target beam suggested by the terminal device, the suggested target beam information includes one or more of the following: The type of QCL associated with the proposed target beam; an identification of the proposed target beam; The cell associated with the proposed target beam; the BWP of the proposed target beam; a beam type of the proposed target beam; an associated channel of the proposed target beam; The TCI framework to which the proposed target beam belongs; The TCI state type associated with the proposed target beam; The number of TCI states associated with the proposed target beam.

65. The network device according to claim 63 or 64, characterized in that: The network device also includes: A first sending unit is used to send second indication information to the terminal device, where the second indication information is used to indicate whether the terminal device is allowed to perform beam switching; and / or The second indication information carries information of the target beam.

66. The network device according to claim 65, characterized in that The receiving unit is further used for: receiving a second response message sent by the terminal device to the second indication information, where the second response message includes one or more of the following: New transmission scheduling information of a target HARQ process, where the target HARQ process is the HARQ process of the first information; Information used to indicate whether the terminal device communicates based on the target beam; Information about the beam used by the terminal device.

67. The network device according to any one of claims 53 to 66, characterized in that: The serving beam and / or the target beam belongs to a first beam set, and the network device further includes: The second sending unit is used to send configuration information to the terminal device, where the configuration information is used to configure the first beam set.

68. The network device according to claim 67, characterized in that The configuration information includes one or more of the following: a TCI state associated with the first beam set; The spatial related information associated with the first beam set; Reference signal information associated with the first beam set; candidate beam information in the first beam set; The candidate reference signal information associated with the first beam set.

69. A terminal device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and 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 18.

70. A network device, characterized in that: It comprises a transceiver, a memory and a processor, wherein the memory is used to store programs, and the processor is used to call the programs in the memory and control the transceiver to receive or send signals so that the network device executes the method as described in any one of claims 19-34.

71. 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 a method as claimed in any one of claims 1 to 34.

72. A chip, characterized in that: It comprises a processor, which is used to call a program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 34.

73. 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 34.

74. A computer program product, characterized in that The method comprises a program which causes a computer to execute the method according to any one of claims 1 to 34.

75. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 34.

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