A beam management method, apparatus, system and storage medium

Abstract

The application provides a beam management method, device, system and storage medium, aiming to improve the resource utilization rate during beam management. The beam management method of the application comprises: sending first information, the first information being used for indicating an activated target TCI-State, the target TCI-State being used for indicating quasi co-location (QCL) information of a target reference beam, the target reference beam being determined based on a to-be-tested beam; scanning the target reference beam; and receiving a real-time signal quality parameter of the target reference beam, the real-time signal quality parameter of the target reference beam being used for calculating a real-time signal quality parameter of the to-be-tested beam. The first communication device can pre-configure the target TCI-State used for indicating the QCL information of the target reference beam to the second communication device, so that frequent signaling transmission is not required during the beam measurement process, the signaling overhead of the beam management is reduced, and the resource utilization rate during the beam management is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and particularly relates to a beam management method, device, system and storage medium. BACKGROUND

[0002] In the field of communication, beam management plays an irreplaceable role in a communication system, and efficient beam management can support a terminal device and a network device to quickly discover and switch a best beam pair, so as to ensure stability and reliability of the system. Beam management is to realize efficient transmission of signals by using directional beams through dynamic interaction between the network device and the terminal device.

[0003] However, the current beam management method needs to be implemented through frequent signaling transmission, which leads to a large signaling overhead of beam management, and thus leads to a low resource utilization rate during beam management. SUMMARY

[0004] The present application provides a beam management method, device, system and storage medium, and aims to improve the resource utilization rate during beam management.

[0005] In order to achieve the above purpose, the present application provides the following technical solutions:

[0006] The first aspect of the present application provides a communication method, which can be applied to a first communication device, for example, the first communication device can be a communication device (for example, a network device), or the first communication device can be a part of the communication device (for example, a processor or a circuit or a chip or a chip system responsible for the communication function), or the first communication device can also be a logic module or software capable of realizing all or part of the function of the communication device. The following takes the first communication device as an example to illustrate that in the method, the first communication device sends first information, the first information is used to indicate an activated target transmission configuration indication state (TCI-State), the target TCI-State is used to indicate quasi co-location (QCL) information of a target reference beam, the target reference beam is determined based on a to-be-tested beam, and a difference between a historical signal quality parameter of the target reference beam and a historical signal quality parameter of the to-be-tested beam is less than or equal to a first threshold value; the first communication device scans the target reference beam; and the first communication device receives a real-time signal quality parameter of the target reference beam, and the real-time signal quality parameter of the target reference beam is used to calculate a real-time signal quality parameter of the to-be-tested beam.

[0007] In the implementation solution, the first communication device can pre-configure the target TCI-State of the QCL information of the target reference beam to the second communication device, so that when the to-be-measured beam needs to be measured, the target TCI-State of the target reference beam corresponding to the to-be-measured beam can be directly indicated by the first information, and the measurement of the to-be-measured beam is realized based on the target reference beam, that is, frequent signaling transmission is not needed in the beam measurement process, the signaling overhead of the beam management is reduced, and the resource utilization rate in the beam management is improved.

[0008] In a possible implementation of the first aspect of the present application, the TCI-State set is transmitted, the TCI-State set includes one or more TCI-States, the TCI-State is used to indicate the QCL information of the reference beam, the TCI-State set includes a target TCI-State; one reference beam corresponds to one beam set, the beams in the beam set belong to the same wide beam, and the difference between the historical signal quality parameter of the reference beam and the historical signal quality parameter of each beam in the beam set is less than a first threshold. In the implementation solution, the first communication device can pre-classify the narrow beams belonging to the same wide beam into one or more beam sets, and determine one reference beam from each beam set, the difference between the historical signal quality parameter of the reference beam and the historical signal quality parameter of each beam in the corresponding beam set is less than the first threshold. And the first communication device can pre-configure the TCI-State corresponding to each reference beam, and transmit the TCI-State set including one or more TCI-States to the second communication device, so that when the to-be-measured beam needs to be measured, the target TCI-State of the target reference beam corresponding to the to-be-measured beam can be directly indicated by the first information, and the measurement of the to-be-measured beam is realized based on the target reference beam, that is, frequent signaling transmission is not needed in the beam measurement process, the signaling overhead of the beam management is reduced, and the resource utilization rate in the beam management is improved.

[0009] In a possible implementation of the first aspect of the application, the beam set is determined by the first communication device sorting the historical signal quality parameters of each beam. In the above implementation, the first communication device can group the narrow beams belonging to the same wide beam into one or more beam sets by sorting the historical signal quality parameters of the narrow beams belonging to the same wide beam, and can determine a reference beam from each beam set, the difference between the historical signal quality parameter of the reference beam and the historical signal quality parameter of each beam in the corresponding beam set being less than a first threshold. The first communication device can pre-configure a TCI-State corresponding to each reference beam, and transmit a TCI-State set including one or more TCI-States to the second communication device, so that when it is necessary to measure a to-be-measured beam, the target TCI-State of the target reference beam corresponding to the to-be-measured beam can be directly activated by the first information, and the measurement of the to-be-measured beam is implemented based on the target reference beam, that is, frequent signaling transmission is not required in the beam measurement process, the signaling overhead of beam management is reduced, and the resource utilization rate during beam management is improved.

[0010] In a possible implementation of the first aspect of the application, the beam set is determined by the first communication device clustering the historical signal quality parameters of each beam based on a first model. In the above implementation, the first communication device can group the narrow beams belonging to the same wide beam into one or more beam sets by clustering the historical signal quality parameters of the narrow beams belonging to the same wide beam based on an artificial intelligence model, and can determine a reference beam from each beam set, the difference between the historical signal quality parameter of the reference beam and the historical signal quality parameter of each beam in the corresponding beam set being less than a first threshold. The first communication device can pre-configure a TCI-State corresponding to each reference beam, and transmit a TCI-State set including one or more TCI-States to the second communication device, so that when it is necessary to measure a to-be-measured beam, the target TCI-State of the target reference beam corresponding to the to-be-measured beam can be directly activated by the first information, and the measurement of the to-be-measured beam is implemented based on the target reference beam, that is, frequent signaling transmission is not required in the beam measurement process, the signaling overhead of beam management is reduced, and the resource utilization rate during beam management is improved.

[0011] In a possible implementation of the first aspect of the application, the real-time signal quality parameter of the to-be-measured beam is determined based on a real-time signal quality parameter of the target reference beam and a historical signal quality parameter difference, the historical signal quality parameter difference being a difference between a historical signal quality parameter of the target reference beam and a historical signal quality parameter of the to-be-measured beam. In the implementation, after receiving the real-time signal quality parameter of the target reference beam, the first communication device can further determine the historical signal quality parameter difference based on the historical signal quality parameter of the target reference beam and the historical signal quality parameter of the to-be-measured beam, and finally determine the real-time signal quality parameter of the to-be-measured beam by compensating the real-time signal quality parameter of the target reference beam with the historical signal quality parameter difference, thereby achieving measurement of the to-be-measured beam.

[0012] In a possible implementation of the first aspect of the application, the to-be-measured beam includes a predicted beam, the predicted beam being a beam whose predicted signal quality parameter predicted by the first communication device based on the second model is greater than or equal to the second threshold. In the implementation, the to-be-measured beam that needs to be managed by the first communication device can be a top-k beam predicted by the first communication device based on the second model, so that after beam management is performed on the top-k beam, an optimal beam that can achieve a maximum signal quality parameter value can be determined from the top-k beam for communication, thereby improving communication efficiency of the communication system.

[0013] In a possible implementation of the first aspect of the application, the method further includes: receiving second information, the second information being used to indicate the predicted beam; and the to-be-measured beam includes a predicted beam, the predicted beam being a beam whose predicted signal quality parameter predicted by the second communication device based on the second model is greater than or equal to the second threshold. In the implementation, the to-be-measured beam that needs to be managed by the first communication device can be a top-k beam predicted by the second communication device based on the second model, so that after beam management is performed on the top-k beam, an optimal beam that can achieve a maximum signal quality parameter value can be determined from the top-k beam for communication, thereby improving communication efficiency of the communication system.

[0014] In a possible implementation of the first aspect of the application, the second information is further used to indicate a predicted signal quality parameter of the predicted beam. In the implementation, the second communication device can indicate the predicted signal quality parameter of the predicted beam to the first communication device through the second information, in addition to indicating the predicted beam predicted based on the second model to the first communication device through the second information. In this way, after the first communication device determines the real-time signal quality parameter of the predicted beam, the first communication device can determine the prediction accuracy of the predicted beam based on the real-time signal quality parameter of the predicted beam and the predicted signal quality parameter of the predicted beam, and then determine whether to start the performance monitoring on the second model.

[0015] In a possible implementation of the first aspect of the application, the method further includes determining an optimal beam based on the real-time signal quality parameter of the to-be-tested beam, the optimal beam being the to-be-tested beam with the maximum real-time signal quality parameter. In the implementation, after the first communication device determines the real-time signal quality parameter of each to-be-tested beam, the first communication device can determine the beam corresponding to the maximum real-time signal quality parameter according to the real-time signal quality parameter of each to-be-tested beam, and determine the beam as the optimal beam. In this way, the first communication device can communicate based on the optimal beam, and thus the communication efficiency of the communication system is improved.

[0016] In a possible implementation of the first aspect of the application, in the case where the to-be-tested beam includes the predicted beam, the optimal beam is a trusted beam with the maximum real-time signal quality parameter in the predicted beam, and a difference between the real-time signal quality parameter of the trusted beam and the predicted signal quality parameter of the trusted beam is less than or equal to a third threshold. In the implementation, when the to-be-tested beam includes the to-be-tested beam predicted by the second model, after the first communication device determines the real-time signal quality parameter of each to-be-tested beam, the first communication device can first filter out the trusted beam based on the real-time signal quality parameter and the predicted signal quality parameter of each to-be-tested beam, and then determine the trusted beam corresponding to the maximum real-time signal quality parameter according to the real-time signal quality parameter of each trusted beam, and determine the trusted beam as the optimal beam. In this way, the first communication device can communicate based on the optimal beam, and thus the communication efficiency of the communication system is improved.

[0017] In a possible implementation of the first aspect of the application, the first information comprises index information of the target TCI-State. In the implementation, the first communication device can pre-encode each TCI-State, determine the index information corresponding to each TCI-State, and configure the second communication device, so that when the to-be-measured beam needs to be measured, the target TCI-State activation of the target reference beam corresponding to the to-be-measured beam can be directly indicated by the index information of the target TCI-State, and the measurement of the to-be-measured beam is implemented based on the target reference beam, that is, no frequent signaling transmission is required in the beam measurement process, and the amount of information of the signaling required to be transmitted can be reduced as much as possible, the signaling overhead of beam management is reduced, and the resource utilization rate during beam management is improved.

[0018] In a possible implementation of the first aspect of the application, the first information is transmitted based on a medium access control control element (MAC CE) or downlink control information (DCI). In the implementation, when the to-be-measured beam needs to be measured, the first communication device can transmit the first information to the second communication device through the MAC CE or the DCI, so that the target TCI-State activation of the target reference beam corresponding to the to-be-measured beam can be directly indicated by the first information, and the measurement of the to-be-measured beam is implemented based on the target reference beam, that is, no frequent signaling transmission is required in the beam measurement process, the signaling overhead of beam management is reduced, and the resource utilization rate during beam management is improved.

[0019] In a possible implementation of the first aspect of the application, the historical signal quality parameter comprises a historical physical layer reference signal received power (L1-RSRP), and the real-time signal quality parameter comprises a real-time L1-RSRP.

[0020] The second aspect of the present application provides a communication method, which can be applied to a second communication device, for example, the second communication device can be a communication device (such as a terminal device), or the second communication device can be a part of the communication device (for example, a processor or circuit or chip or chip system responsible for communication function), or the second communication device can also be a logic module or software capable of realizing all or part of the communication device function. The following takes the second communication device as an example to illustrate that in the method, the second communication device receives first information, the first information is used to indicate to activate a target transmission configuration indication state (TCI-State), the target TCI-State is used to indicate quasi co-location (QCL) information of a target reference beam, the target reference beam is determined based on a to-be-measured beam, and a difference between a historical signal quality parameter of the target reference beam and a historical signal quality parameter of the to-be-measured beam is less than or equal to a first threshold value; and the second communication device sends a real-time signal quality parameter of the target reference beam, the real-time signal quality parameter of the target reference beam is used to calculate a real-time signal quality parameter of the to-be-measured beam, and the real-time signal quality parameter of the target reference beam is measured based on the quasi co-location QCL information of the target reference beam.

[0021] In the implementation scheme, the first communication device can preconfigure the target TCI-State used to indicate the QCL information of the target reference beam to the second communication device, so that when it is necessary to measure the to-be-measured beam, the target TCI-State of the target reference beam corresponding to the to-be-measured beam can be directly activated by the first information, and the measurement of the to-be-measured beam is realized based on the target reference beam, that is, frequent signaling transmission is not required in the beam measurement process, the signaling overhead of the beam management is reduced, and the resource utilization rate during the beam management is improved.

[0022] In a possible implementation manner of the second aspect of the present application, the method further includes:

[0023] receiving a TCI-State set, the TCI-State set including one or more TCI-States, the TCI-State being used to indicate quasi co-location QCL information of a reference beam, the TCI-State set including the target TCI-State; one of the reference beams corresponds to a beam set, and the beams in the beam set belong to a same wide beam, and a difference between a historical signal quality parameter of the reference beam and a historical signal quality parameter of each beam in the beam set is less than a first threshold value.

[0024] In a possible implementation manner of the second aspect of the present application, the beam set is determined by the first communication device based on the sorting of the historical signal quality parameter of each beam.

[0025] In a possible implementation manner of the second aspect of the application, the beam set is determined by the first communication device based on clustering of the historical signal quality parameters of each beam according to a first model.

[0026] In a possible implementation manner of the second aspect of the application, the real-time signal quality parameter of the to-be-tested beam is determined based on a difference between the real-time signal quality parameter of the target reference beam and a historical signal quality parameter of the to-be-tested beam.

[0027] In a possible implementation manner of the second aspect of the application, the to-be-tested beam includes a predicted beam, the predicted beam being a beam whose predicted signal quality parameter predicted by the first communication device based on a second model is greater than or equal to a second threshold.

[0028] In a possible implementation manner of the second aspect of the application, the method further includes: sending second information, the second information being used to indicate a predicted beam; and the to-be-tested beam including the predicted beam, the predicted beam being a beam whose predicted signal quality parameter predicted by the second communication device based on a second model is greater than or equal to a second threshold.

[0029] In a possible implementation manner of the second aspect of the application, the second information is further used to indicate the predicted signal quality parameter of the predicted beam.

[0030] In a possible implementation manner of the second aspect of the application, the first information includes index information of the target TCI-State.

[0031] In a possible implementation manner of the second aspect of the application, the first information is sent based on a medium access control control element (MAC CE) or downlink control information (DCI).

[0032] In a possible implementation manner of the second aspect of the application, the historical signal quality parameter includes a historical physical layer reference signal received power (L1-RSRP), and the real-time signal quality parameter includes a real-time L1-RSRP.

[0033] The third aspect provides a communication device including a processor. The processor is coupled with a memory and is configured to execute instructions or data in the memory to implement the method in any possible implementation manner of any aspect described above. Optionally, the communication device further includes the memory. Optionally, the communication device further includes a communication interface, and the processor is coupled with the communication interface.

[0034] In an implementation manner, the communication interface can be a transceiver, or an input / output interface.

[0035] In another implementation, the communication apparatus is a chip configured in a terminal device. When the communication apparatus is a chip configured in a terminal device, the communication interface can be an input / output interface.

[0036] In a fourth aspect, a communication apparatus is provided, which includes a processor. The processor is coupled with a memory and is configured to execute instructions or data in the memory to implement the method in any possible implementation of any of the aspects above. Optionally, the communication apparatus further includes the memory. Optionally, the communication apparatus further includes a communication interface, and the processor is coupled with the communication interface.

[0037] In an implementation, the communication interface can be a transceiver, or an input / output interface.

[0038] In another implementation, the communication apparatus is a chip configured in a satellite. When the communication apparatus is a chip configured in a satellite, the communication interface can be an input / output interface.

[0039] In a fifth aspect, a processor is provided, which includes an input circuit, an output circuit and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation of any of the aspects.

[0040] In a specific implementation, the processor can be one or more chips, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, various logic circuits, etc. The input signal received by the input circuit can be received and input by, for example but not limited to, a receiver, the output signal output by the output circuit can be output to and transmitted by, for example but not limited to, a transmitter, and the input circuit and the output circuit can be the same circuit which is used as the input circuit and the output circuit at different times. The embodiments of the present application do not limit the specific implementation of the processor and various circuits.

[0041] In a sixth aspect, a communication apparatus is provided, which includes a processor and a memory. The processor is configured to read instructions stored in the memory, and can receive a signal through a receiver and transmit a signal through a transmitter to execute the method in any possible implementation of any of the aspects above.

[0042] Optionally, the processor is one or more, and the memory is one or more.

[0043] In a seventh aspect, a computer program product is provided, which includes a computer program (also referred to as code or instructions), which, when executed, causes a computer to execute the method in any possible implementation of any of the aspects above.

[0044] In an eighth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code or instructions) that, when executed on a computer, causes the computer to perform the method in any possible implementation of any of the aspects.

[0045] In a ninth aspect, an embodiment of the present application provides a chip system, which includes one or more processors for invoking and running instructions stored in a memory, so that the method in any of the aspects or the first possible implementation of any of the aspects is performed. The chip system can be composed of a chip, or can include a chip and other discrete devices.

[0046] In the chip system, the input circuit or interface for sending information or data, and the output circuit or interface for receiving information or data can be included.

[0047] In a tenth aspect, a communication system is provided, which includes the terminal device and the network device (including the access network device and the core network device) described above. Optionally, the communication system can further include other devices in communication with the terminal device and / or the network device.

[0048] In an eleventh aspect, a communication apparatus is provided, which includes a transceiver module and a processing module, and is configured to perform the method in any possible implementation of any of the aspects. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 A system architecture diagram of a communication system provided by an embodiment of the present application is provided.

[0050] Figure 2 A flowchart of a beam management method provided by an embodiment of the present application is provided.

[0051] Figure 3 A division diagram of a beam set provided by an embodiment of the present application is provided.

[0052] Figure 4 A flowchart of beam set encoding provided by an embodiment of the present application is provided.

[0053] Figure 5 A flowchart of another beam management method provided by an embodiment of the present application is provided.

[0054] Figure 6 A flowchart of still another beam management method provided by an embodiment of the present application is provided.

[0055] Figure 7 A structure diagram of a communication apparatus provided by an embodiment of the present application is provided.

[0056] Figure 8 Another structural schematic diagram of a communication apparatus provided by an embodiment of the present application is shown in FIG. 2.

[0057] Figure 9 A structural example diagram of an electronic device provided by an embodiment of the present application is shown in FIG. 3. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing the specific embodiments and are not intended to be limiting to the present application. As used in the specification and the appended claims of the present application, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “one or more,” in the embodiments of the present application, refer to one, two, or more than two; “and / or” describes the associated objects in the association relationship, which means that there can be three kinds of relationships; for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character “ / ” generally represents an “or” relationship between the associated objects.

[0059] In the present specification, the phrase “one embodiment” or “some embodiments” etc. means that a specific feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Therefore, the phrases “in one embodiment,” “in some embodiments,” “in other some embodiments,” “in yet some embodiments” etc. appearing in different places in the present specification are not necessarily all referring to the same embodiment, but mean “one or more but not all embodiments,” unless otherwise specifically emphasized. The terms “include,” “contain,” “have” and their variations mean “including but not limited to,” unless otherwise specifically emphasized.

[0060] The plurality referred to in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the terms “first,” “second,” etc. are only used for the purpose of distinguishing the description and cannot be understood as indicating or implying relative importance or indicating or implying order.

[0061] In order to better understand the solutions of the embodiments of the present application, the related terms and concepts that may be involved in the embodiments of the present application will be introduced first.

[0062] 1. Beam management

[0063] Beam management refers to the process by which network devices and terminal devices dynamically select, maintain, and optimize directional beam pairs for uplink and downlink transmission through a series of physical layer and access network high layer procedures. The core goal of beam management is to ensure that the transmitting end and the receiving end can always select the best beam direction for communication in complex wireless environments, thereby compensating for the propagation loss of high-frequency signals, improving coverage, and meeting the needs of 5G and future communication systems for high data rates, low latency, and reliable connections. The core procedures of beam management include:

[0064] (1) Beam sweeping: In a certain period or time interval, beams are transmitted and received in a predefined direction to cover a specific spatial area.

[0065] (2) Beam measurement: Evaluating the quality of received signals, common indicators include reference signal received power and signal-to-interference noise ratio.

[0066] (3) Beam selection: Selecting the optimal beam or beams on the network side or terminal side based on measurement results.

[0067] (4) Beam reporting: The terminal device reports beam quality measurement results and decision information to the network device to allow the network device to adjust transmission strategies.

[0068] (5) Beam indication: The network device informs the terminal device to use a specified beam for data transmission.

[0069] (6) Beam switching: When the quality of the current beam decreases, switch to another beam with better quality.

[0070] (7) Beam recovery: When beam failure causes link interruption, the process of quickly recovering communication.

[0071] 2. Transmission configuration indication state (TCI-State)

[0072] TCI-State is a key parameter set in the 5G New Radio system, used to define the quasi-co-location (QCL) relationship between downlink or uplink signals. The core role of TCI-State can include quasi-co-location relationship configuration, beam management optimization, and reduction of signaling overhead. TCI-State can be composed of the following fields:

[0073] tci-StateId: unique identifier.

[0074] qcl-Type1: configure the QCL information of the first downlink reference signal (mandatory).

[0075] qcl-Type2: configure the QCL information of the second downlink reference signal (optional, and the QCL type must be different from qcl-Type1).

[0076] 3. Quasi co-location information

[0077] QCL refers to a specific relationship between two antenna ports, i.e., if the channel large-scale parameter properties experienced by the symbols on one antenna port can be inferred from the channel large-scale parameter properties experienced by the symbols on another antenna port, then the two antenna ports are called quasi co-located. QCL describes the similarity of channel large-scale parameter properties between two antenna ports. These large-scale parameters include Doppler shift, Doppler spread, average delay, delay spread, and spatial receiver parameters. QCL relationship enables the terminal device to use the channel information of one antenna port to infer the channel state of another antenna port, thereby optimizing the signal reception and demodulation process.

[0078] 4. Layer 1 reference signal receiving power (L1-RSRP)

[0079] L1-RSRP refers to the linear average of the received power on the resource elements carrying reference signals (such as synchronization signal blocks or channel state information reference signals), with units of watts (W) or decibel milliwatts (dBm). L1-RSRP directly reflects the reference signal strength received by the terminal device from the network device, and is a key indicator for evaluating network coverage quality and beam management performance. It can be understood that L1-RSRP measures the average received power on the resource elements occupied by the reference signal in the physical layer.

[0080] 5. Channel state information reference signal (CSI-RS)

[0081] CSI-RS is a reference signal sent by the network device to the terminal device, used to measure the quality of the downlink channel. The terminal device measures the CSI-RS and feeds back channel state information, including channel quality indicators, precoding matrix indicators, and rank indicators, to help the base station optimize the signal transmission path and improve communication efficiency.

[0082] 6. Wide beam

[0083] Wide beam refers to an electromagnetic beam with a relatively large beam width, which has a wide coverage range and can simultaneously transmit signals in a large spatial area, which makes it have significant advantages in scenarios that require large-area coverage. For example, in the field of wireless broadcasting, a wide beam can widely transmit signals to a large area such as a city or a rural area, so that a large number of receiving devices can receive signals in a large range; in satellite communication, a wide beam can realize coverage of a large area on the earth, ensuring that users in different geographical locations can obtain communication services. However, due to energy dispersion, the signal strength in a specific direction of a wide beam is relatively weak, and the transmission distance and anti-interference ability may be inferior to those of a narrow beam, which has certain limitations in communication scenarios that require high precision, long distance, or strong anti-interference.

[0084] 7. Narrow beam

[0085] A narrow beam can refer to an electromagnetic beam with a relatively small beam width included in a wide beam. It has the characteristics of energy concentration and strong directivity, and can highly focus signal energy in a specific direction. This makes the narrow beam able to maintain high signal strength in long-distance transmission, effectively extending the communication distance, for example, in scenarios such as deep sea exploration and interstellar communication that require extremely long distances, a narrow beam can ensure that the signal is still clear after long-distance transmission. At the same time, due to its strong directivity, a narrow beam can reduce the influence of external interference and improve the reliability and stability of communication, and is widely used in fields such as military communication and radar detection that require strict secrecy and anti-interference. However, the coverage range of a narrow beam is relatively narrow, and precise pointing control is required, which requires high positioning and pointing accuracy of the device.

[0086] 8. Media access control control element (MAC CE)

[0087] The MAC CE is a control element of the media access control layer, used to exchange control information of the media access control layer between terminal devices and network devices. The MAC CE can carry various control information, such as power headroom reports, buffer status reports, timing advance commands, discontinuous reception commands, etc. These information helps the base station to perform resource allocation, scheduling and power control operations.

[0088] 9. Downlink control information (DCI)

[0089] DCI is a key control information transmitted through physical layer signaling in a wireless communication system, mainly used for resource scheduling, parameter configuration and transmission control functions.

[0090] The system architecture of the embodiments of the present application is introduced as follows.

[0091] Embodiments of the present application are applied to a communication system, which can be a second generation (2G) communication system, a third generation (3G) communication system, an LTE system, a fifth generation (5G) communication system, a hybrid architecture of LTE and 5G, a 5G new radio (5G NR) system, and a new communication system in future communication development, etc.

[0092] The communication system includes a first device and a second device. The first device can be a device for providing network communication function on the network side, which is also called network device or network element in some cases. The network device can be a base station (including a functional unit of the base station or a combination of functional units of the base station) or a core network unit in general, which can be a functional unit in the core network, including but not limited to an Access and Mobility Management Function (AMF) unit or a Session Management Function (SMF) unit. The second device can be a device accessing the network, which is usually a terminal device. An example of the communication system is shown in Figure 1 Figure 1 which includes a base station 11 and a terminal 12.

[0093] ​In the embodiments provided in the present application, the base station can be any kind of device with wireless transceiver function, including but not limited to: an evolved Node B (eNB or e-nodeB) in long term evolution (LTE), a base station (gNodeB or gNB) or transmission receiving point (TRP) in new radio (NR), a base station in subsequent evolution of 3GPP, an access node in Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a micro station, a relay station, or a balloon station, etc. The base station can include one or more co-sited or non-co-sited transmission reception points (TRPs). The base station can also be a radio controller in a cloud radio access network (CRAN) scenario, a centralized unit (CU), and / or a distributed unit (DU). The base station can communicate with the terminal device, or communicate with the terminal device through the relay station. The terminal device can communicate with multiple base stations of different technologies, for example, the terminal device can communicate with a base station supporting an LTE network, and can also communicate with a base station supporting a 5G network, and can also communicate with a base station supporting an LTE network and a base station supporting a 5G network in dual connectivity.

[0094] In the embodiments provided in the present application, the terminal device can be various forms, for example, a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a vehicle-mounted terminal device, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, a wearable terminal device, and the like. The terminal device can also be referred to as a terminal device, a user equipment (UE), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent, or a UE apparatus, and the like. The terminal device can also be a fixed terminal device or a mobile terminal device.

[0095] In the field of communication, beam management plays an irreplaceable role in the communication system. Efficient beam management can support the terminal device and the network device to quickly discover and switch the best beam pair, and ensure the stability and reliability of the system. Beam management is to realize efficient transmission of signals by using directional beams through dynamic interaction between the network device and the terminal device.

[0096] The beam management algorithm based on artificial intelligence (AI) / machine learning (ML) technology brings new opportunities for the next generation of wireless communication technology. Among them, the beam prediction based on AI / ML technology can be placed on the network side or the terminal side. Taking the AI beam management on the network side as an example, the specific process is as follows: in the network side, the network device scans different transmit beams in the “set B” measured by the terminal device, and then the terminal device returns the L1-RSRP measurement value of the beam in the “set B” to the network device. After receiving, the network device uses the received L1-RSRP value as the input of the AI / ML model, and then predicts the top-k beams in set A. Based on the prediction result, the network device scans the predicted top-k transmit beams in set A, and then the terminal device measures to determine the beam with the highest L1-RSRP value as the best transmit beam.

[0097] However, the top-k beams predicted based on the artificial intelligence model can be distributed in different wide beams, so that the network side has certain complexity when scanning the beams. The current beam management method is to configure k fixed CSI-RS resources by the network device, and indicate the corresponding TCI-State to each CSI-RS resource through the downlink signaling, for indicating the QCL information, so as to realize the measurement management of the top-k beams. However, in this method, the network side will configure k QCL information each time the artificial intelligence model predicts the top-k beams, and indicate through the downlink signaling, that is, the current beam management method needs to be implemented through frequent signaling transmission, resulting in large signaling overhead of beam management, thereby resulting in low resource utilization rate when managing the beams.

[0098] In order to make the technical solutions of the present application clearer and easier to understand, a beam management method of an embodiment of the present application will be introduced below in combination with the drawings. The embodiment of the present application is applicable to the beam management process in a wireless communication scenario. The beam management method provided by the embodiment of the present application can be applied to a first communication device and a second communication device. For example, the first communication device can be a communication device (such as a network device), or the first communication device can be part of the components (such as a processor or circuit or chip or chip system responsible for communication function) in the communication device, or the first communication device can also be a logic module or software capable of realizing all or part of the functions of the communication device. The second communication device can be a communication device (such as a terminal device), or the second communication device can be part of the components (such as a processor or circuit or chip or chip system responsible for communication function) in the communication device, or the second communication device can also be a logic module or software capable of realizing all or part of the functions of the communication device.

[0099] The first communication device and the second communication device will be taken as examples for illustration.

[0100] Referring to Figure 2 , Figure 2 , a flowchart of a beam management method provided by an embodiment of the present application is shown. The beam management method provided by the embodiment of the present application mainly includes the following steps:

[0101] S201. The first communication device sends first information, and correspondingly, the second communication device receives the first information.

[0102] The first information is used to indicate an activated target transmission configuration indication state (TCI-State), and the target TCI-State is used to indicate the quasi co-location (QCL) information of a target reference beam. The target reference beam is determined based on a to-be-measured beam, and the difference between the historical signal quality parameter of the target reference beam and the historical signal quality parameter of the to-be-measured beam is less than or equal to a first threshold value.

[0103] In this embodiment, the first communication device can pre-configure the target TCI-State of the QCL information used to indicate the target reference beam to the second communication device. When the beam to be measured is determined and needs to be measured, the first information can be used to directly activate the target TCI-State of the target reference beam corresponding to the beam to be measured, so as to realize the measurement of the beam to be measured based on the target reference beam. That is, there is no need for frequent signaling transmission during beam measurement, reducing the signaling overhead of beam management and thus improving the resource utilization during beam management. The signal quality parameters may include physical layer reference signal received power L1-RSRP, or parameters that can be used to evaluate the received signal quality, such as signal-to-noise ratio. These parameters can be set according to the actual situation, and this embodiment does not limit them. When the signal quality parameters include L1-RSRP, the historical signal quality parameters may include historical L1-RSRP, the real-time signal quality parameters may include real-time L1-RSRP, and the predicted signal quality parameters may include predicted L1-RSRP. Historical signal quality parameters can be signal quality parameters measured at historical moments earlier than the current moment. Real-time signal quality parameters can be signal quality parameters obtained through measurement at the current moment, or they can refer to the signal quality parameters to be measured at the current moment. Predicted signal quality parameters can be signal quality parameters predicted by artificial intelligence models.

[0104] In this embodiment, the first communication device can pre-determine one or more narrow beams that may be used for communication with the second communication device, divide narrow beams belonging to the same wide beam into one or more beam sets, and determine a reference beam from each beam set such that the difference between the historical signal quality parameters of the reference beam and the historical signal quality parameters of each beam in the corresponding beam set is less than a first threshold. Since the difference between the historical signal quality parameters of the reference beam and the historical signal quality parameters of each beam in the corresponding beam set is less than the first threshold, it can be considered that the channel characteristics of the reference beam and each beam in the corresponding beam set are similar.

[0105] For example, such as Figure 3 As shown, in wide beam 0, the first communication device can traverse all narrow beams in wide beam 0 and calculate the historical L1-RSRP difference between each narrow beam and other narrow beams. Finally, it is determined that the difference between "narrow beam 0_1" and all other beams within the same wide beam does not exceed the first threshold, i.e., the maximum deviation range. Therefore, all narrow beams in this wide beam can be directly identified as a beam set, and "narrow beam 0_1" can be directly identified as the reference beam of this beam set.

[0106] In the wide beam 1, the first communication device can traverse all the narrow beams in the wide beam 1, and calculate the historical L1-RSRP difference value of each narrow beam with other narrow beams. Finally, if the difference value of the historical L1-RSRP of a part of narrow beams with the historical L1-RSRP of other beams exceeds the first threshold value, that is, the maximum deviation range, the part of narrow beams can be excluded first; then the remaining narrow beams are repeatedly screened according to the screening logic, and the remaining narrow beams are determined as a beam set, and finally it is determined that the "narrow beam 1_1" and the "narrow beam 1_3" meet the condition, and both of them are reference beams of the beam set.

[0107] In a possible implementation manner of the embodiment of the present application, the beam set is determined by the first communication device according to the sorting of the historical signal quality parameters of each beam.

[0108] In the embodiment of the present application, the first communication device can group the narrow beams belonging to the same wide beam into one or more beam sets by sorting the historical signal quality parameters of the narrow beams belonging to the same wide beam, and can determine a reference beam from each beam set, and the difference value between the historical signal quality parameter of the reference beam and the historical signal quality parameter of each beam in the corresponding beam set is less than the first threshold value.

[0109] For example, first, the historical L1-RSRP of the narrow beams belonging to the same wide beam can be sorted from high to low, as shown in Table 1 below:

[0110] Table 1

[0111]

[0112] Secondly, the screening parameter can be set, that is, it can be assumed that the first threshold value, that is, the maximum deviation range, is 1dBm, and based on this, the beam set is determined. As shown in Table 1, starting from the "beam 5" with the highest L1-RSRP (-50dBm), 2 maximum deviation ranges (that is, 2x1dBm=2dBm) are reduced, and the critical value -52dBm is obtained.

[0113] Finally, the beam set determination and the reference beam selection can be performed. Specifically, it can be divided into two beam sets as follows:

[0114] The first beam set includes the beams with L1-RSRP≥-52dBm, that is, the beam 5, the beam 2, the beam 1 and the beam 3, and the beam with L1-RSRP corresponding to the median in the set, that is, the beam 2, is selected as the reference beam of the beam set.

[0115] The second beam set includes beams with remaining L1-RSRP < -52dBm, i.e., beam 6, beam 4, beam 7, and beam 8, and a beam with L1-RSRP at the median in the set, i.e., beam 4, is selected as the reference beam of the beam set.

[0116] In a possible implementation manner of the embodiment of the application, the beam set is determined by the first communication device based on a first model for clustering the historical signal quality parameters of each beam.

[0117] In the embodiment of the application, the first communication device can cluster the historical signal quality parameters of the narrow beams belonging to the same wide beam by using the artificial intelligence model, group the narrow beams belonging to the same wide beam into one or more beam sets, and determine a reference beam from each beam set, the difference between the historical signal quality parameter of the reference beam and the historical signal quality parameter of each beam in the corresponding beam set being less than a first threshold value. The first model can be pre-trained based on artificial intelligence or machine learning and used to determine the beam set.

[0118] For example, first, data input can be performed, i.e., the historical L1-RSRP data of the narrow beams belonging to the same wide beam can be input into the first model.

[0119] Secondly, the first model can determine the first threshold value, i.e., the maximum deviation range, as the clustering threshold value, and automatically cluster the narrow beams with similar historical L1-RSRP data, i.e., the difference being less than or equal to the first threshold value, into a beam set.

[0120] Finally, for each beam set formed by clustering, a beam with L1-RSRP at the median can be selected as the reference beam of the beam set.

[0121] In the embodiments of the present application, after determining the one or more beam sets and the reference beam corresponding to each beam set, the first communication device can also pre-configure the TCI-State of each reference beam, that is, the QCL information of each reference beam can be configured. The specific format of TCI-State can be: {reference signal, QCL-Type D}, wherein the reference signal corresponds to the signal type transmitted in the selected reference beam, and QCL-Type D corresponds to the transmit-receive beam pair parameter of the reference beam. It can be understood that for the reception of a target reference signal, the terminal device needs to obtain the required large-scale parameters from one or more QCL source signals. For example, the terminal device obtains the time and frequency parameters from one QCL source signal, and obtains the spatial reception parameters from another QCL source signal. Therefore, before the terminal device receives the target reference signal, the network device needs to configure the QCL source signal and the QCL type between the target reference signal and the source signal for the terminal device through signaling.

[0122] In the embodiments of the present application, after configuring the corresponding TCI-State for each reference beam, the first communication device can collect the TCI-States of all reference beams to form a TCI-State set, that is, the TCI-State set can be constructed based on the TCI-States of all reference beams, and the TCI-State set is configured to the second communication device.

[0123] It can be understood that in order to facilitate the first communication device to perform efficient transmission of data through signaling, each TCI-State in the TCI-State set can be binary encoded to obtain the encoding of each TCI-State, that is, the index information of each TCI-State. For example, as shown in Figure 4 The encoding of each TCI-State can be 4-bit encoding, which can range from 0000 to 1111, for example, TCI-State0 can be encoded as 0000, TCI-State1 can be encoded as 0001, and TCI-State15 can be encoded as 1111.

[0124] In the embodiments of the present application, the first communication device divides one or more narrow beams that can be used for communication with the second communication device into one or more beam sets in advance, determines a reference beam corresponding to each beam set, configures a corresponding TCI-State for each reference beam, and configures a TCI-State set including one or more TCI-States to the second communication device in advance. Then, the first communication device can determine a to-be-measured beam to be measured, further determine a target reference beam corresponding to the to-be-measured beam according to the beam set to which the to-be-measured beam belongs, and directly indicate the target TCI-State activation of the target reference beam corresponding to the to-be-measured beam to the second communication device through the first information, so as to realize measurement of the to-be-measured beam based on the target reference beam. That is, frequent signaling transmission is not required in the beam measurement process, the signaling overhead of beam management is reduced, and the resource utilization rate during beam management is improved. The to-be-measured beam can include one or more beams, can be a beam that can become the best beam, can be a beam determined according to communication requirements, can be a beam predicted based on an artificial intelligence model, or can be a beam determined based on other manners. The to-be-measured beam can be set according to actual conditions, and the embodiments of the present application do not limit the to-be-measured beam.

[0125] In a possible implementation manner of the embodiments of the present application, the first information includes index information of the target TCI-State.

[0126] In the embodiments of the present application, the first communication device can encode each TCI-State in advance, determine index information corresponding to each TCI-State and configure the index information to the second communication device. In this way, when it is necessary to measure the to-be-measured beam, the index information of the target TCI-State can be directly used to indicate the target TCI-State activation of the target reference beam corresponding to the to-be-measured beam, and the measurement of the to-be-measured beam can be realized based on the target reference beam. That is, frequent signaling transmission is not required in the beam measurement process, and the amount of information of the signaling that needs to be transmitted can be reduced as much as possible, the signaling overhead of beam management is reduced, and the resource utilization rate during beam management is improved.

[0127] In a possible implementation manner of the embodiments of the present application, the first information is transmitted based on a medium access control control element (MAC CE) or downlink control information (DCI).

[0128] In the embodiments of the present application, when it is necessary to measure the to-be-measured beam, the first communication device can send the first information to the second communication device through the MAC CE or the DCI, so as to directly indicate the target TCI-State activation of the target reference beam corresponding to the to-be-measured beam through the first information, and implement the measurement of the to-be-measured beam based on the target reference beam, that is, frequent signaling transmission is not required in the beam measurement process, the signaling overhead of the beam management is reduced, and the resource utilization rate during the beam management is improved.

[0129] S202. The first communication device scans the target reference beam.

[0130] S203. The second communication device measures the real-time signal quality parameter of the target reference beam.

[0131] The real-time signal quality parameter of the target reference beam is measured based on the quasi co-location (QCL) information of the target reference beam.

[0132] In the embodiments of the present application, after the first communication device determines the target reference beam corresponding to the to-be-measured beam, the first communication device can perform signal scanning on the target reference beam, so that the second communication device can measure the real-time signal quality parameter of the target reference beam. After receiving the first information, the second communication device can first decode the first information, then determine the target TCI-State of the target reference beam based on the first information, and further determine the QCL information of the target reference beam based on the target TCI-State, so as to determine the reception beam indicated by the QCL information based on the QCL information of the target reference beam, and finally implement the measurement of the target reference beam based on the determined reception beam to obtain the real-time signal quality parameter of the target reference beam.

[0133] S204. The second communication device sends the real-time signal quality parameter of the target reference beam, and correspondingly, the first communication device receives the real-time signal quality parameter of the target reference beam.

[0134] The real-time signal quality parameter of the target reference beam is used to calculate the real-time signal quality parameter of the to-be-measured beam, and the real-time signal quality parameter of the target reference beam is measured based on the quasi co-location (QCL) information of the target reference beam.

[0135] In the embodiments of the present application, the second communication device can send the real-time signal quality parameter of the target reference beam to the first communication device after measuring the real-time signal quality parameter of the target reference beam. The first communication device can further calculate the real-time signal quality parameter of the to-be-measured beam based on the real-time signal quality parameter of the target reference beam after receiving the real-time signal quality parameter of the target reference beam, that is, the measurement of the to-be-measured beam can be realized based on the target reference beam, so that frequent signaling transmission is not required in the beam measurement process, the signaling overhead of beam management is reduced, and the resource utilization rate during beam management is improved.

[0136] In a possible implementation manner of the embodiments of the present application, the real-time signal quality parameter of the to-be-measured beam is determined based on the real-time signal quality parameter of the target reference beam and a historical signal quality parameter difference, and the historical signal quality parameter difference is a difference between the historical signal quality parameter of the target reference beam and the historical signal quality parameter of the to-be-measured beam.

[0137] In the embodiments of the present application, the first communication device can obtain the historical signal quality parameter of the to-be-measured beam and the historical signal quality parameter of the target reference beam, calculate the historical signal quality parameter difference based on the historical signal quality parameter of the to-be-measured beam and the historical signal quality parameter of the target reference beam, and then determine the real-time signal quality parameter of the to-be-measured beam by compensating the real-time signal quality parameter of the target reference beam based on the historical signal quality parameter difference, so as to realize the measurement of the to-be-measured beam, that is, the first communication device can directly calculate the real-time signal quality parameter of the to-be-measured beam based on the real-time signal quality parameter of the target reference beam without directly measuring the to-be-measured beam by the second communication device, thereby reducing the measurement overhead of the second communication device and further improving the resource utilization rate during beam management.

[0138] For example, when the signal quality parameter includes L1-RSRP, the historical L1-RSRP difference can be calculated by the following formula:

[0139] The historical L1-RSRP difference = historical L1-RSRP of the target reference beam - historical L1-RSRP of the to-be-measured beam.

[0140] The real-time L1-RSRP of the to-be-measured beam can be calculated by the following formula:

[0141] The real-time L1-RSRP of the to-be-measured beam = real-time L1-RSRP of the target reference beam + historical L1-RSRP difference.

[0142] As can be known from the foregoing examples, the first communication device can configure the target TCI-State of the QCL information indicating the target reference beam to the second communication device in advance, so that when it is necessary to measure the to-be-measured beam, the target TCI-State of the target reference beam corresponding to the to-be-measured beam can be directly activated by the first information, and the measurement of the to-be-measured beam is realized based on the target reference beam, that is, frequent signaling transmission is not required in the beam measurement process, the signaling overhead of the beam management is reduced, and the resource utilization rate during the beam management is improved.

[0143] Referring to Figure 5 , Figure 5 FIG. 2 shows a flowchart of another beam management method provided by an embodiment of the present application. The beam management method provided by an embodiment of the present application mainly includes the following steps.

[0144] S501. The first communication device sends a TCI-State set, and correspondingly, the second communication device receives the TCI-State set.

[0145] The TCI-State set includes one or more TCI-States, the TCI-State is used to indicate the QCL information of the reference beam, the TCI-State set includes a target TCI-State; one reference beam corresponds to one beam set, the beams in the beam set belong to the same wide beam, and the difference between the historical signal quality parameter of the reference beam and the historical signal quality parameter of each beam in the beam set is less than a first threshold.

[0146] In the embodiment of the present application, the first communication device can pre-classify the narrow beams belonging to the same wide beam into one or more beam sets, and can determine one reference beam from each beam set, the difference between the historical signal quality parameter of the reference beam and the historical signal quality parameter of each beam in the corresponding beam set is less than a first threshold. And the first communication device can pre-configure the TCI-State corresponding to each reference beam, and send the TCI-State set including one or more TCI-States to the second communication device, so that when it is necessary to measure the to-be-measured beam, the target TCI-State of the target reference beam corresponding to the to-be-measured beam can be directly activated by the first information, and the measurement of the to-be-measured beam is realized based on the target reference beam, that is, frequent signaling transmission is not required in the beam measurement process, the signaling overhead of the beam management is reduced, and the resource utilization rate during the beam management is improved.

[0147] S502. The first communication device performs beam prediction based on a second model to obtain a predicted beam.

[0148] The to-be-measured beam includes a predicted beam, and the predicted beam is a beam whose predicted signal quality parameter predicted by the first communication device based on the second model is greater than or equal to a second threshold.

[0149] In the embodiment of the application, the first communication device can be deployed with a second model for beam prediction, wherein the second model can be pre-trained and used to predict a beam with better signal quality parameter in the current communication scenario, that is, the second model can be used to predict a beam whose predicted signal quality parameter is greater than or equal to a second threshold. It can be understood that the first communication device can determine one or more beams that can be used for communication with the second communication device in advance, and input the historical signal quality parameters and other parameters of the one or more beams into the second model as input data to predict one or more predicted beams with better signal quality parameters in the current communication scenario, for example, to predict top-k beams, and to predict the predicted signal quality parameter of each predicted beam. The first communication device can measure the predicted beam predicted by the second model as a to-be-measured beam, and determine the prediction accuracy of the second model based on the real-time signal quality parameter of the to-be-measured beam obtained by measurement.

[0150] S503. The first communication device sends first information, and correspondingly, the second communication device receives the first information.

[0151] The first information is used to indicate an activated target transmission configuration indication state (TCI-State), and the target TCI-State is used to indicate the quasi co-location (QCL) information of a target reference beam, wherein the target reference beam is determined based on the to-be-measured beam, and the difference between the historical signal quality parameter of the target reference beam and the historical signal quality parameter of the to-be-measured beam is less than or equal to a first threshold.

[0152] S504. The first communication device scans the target reference beam.

[0153] S505. The second communication device measures the real-time signal quality parameter of the target reference beam.

[0154] The real-time signal quality parameter of the target reference beam is measured based on the quasi co-location (QCL) information of the target reference beam.

[0155] S506. The second communication device sends the real-time signal quality parameter of the target reference beam, and correspondingly, the first communication device receives the real-time signal quality parameter of the target reference beam.

[0156] The real-time signal quality parameter of the target reference beam is used to calculate the real-time signal quality parameter of the to-be-measured beam, and the real-time signal quality parameter of the target reference beam is measured based on the quasi co-location (QCL) information of the target reference beam.

[0157] The contents of steps S503-S506 are similar to those of steps S201-S204 in the foregoing embodiment, and will not be described herein again.

[0158] S507. The first communication device determines the optimal beam based on the real-time signal quality parameter of the to-be-tested beams.

[0159] The optimal beam is the to-be-tested beam with the maximum real-time signal quality parameter.

[0160] In the embodiment, after determining the real-time signal quality parameter of each to-be-tested beam, the first communication device can determine the beam corresponding to the maximum real-time signal quality parameter based on the real-time signal quality parameter of each to-be-tested beam, and determine the beam as the optimal beam, so as to facilitate communication based on the optimal beam, thereby improving the communication efficiency of the communication system.

[0161] In a possible implementation manner of the embodiment, in the case where the to-be-tested beams include predicted beams, the optimal beam is a trusted beam in the predicted beams with the maximum real-time signal quality parameter, and the difference between the real-time signal quality parameter of the trusted beam and the predicted signal quality parameter of the trusted beam is less than or equal to the third threshold.

[0162] In the embodiment, when the to-be-tested beams include to-be-tested beams predicted by the second model, after determining the real-time signal quality parameter of each to-be-tested beam, the first communication device can first filter out trusted beams based on the real-time signal quality parameter and the predicted signal quality parameter of each to-be-tested beam, and finally determine the trusted beam corresponding to the maximum real-time signal quality parameter based on the real-time signal quality parameter of each trusted beam, and determine the trusted beam as the optimal beam, so as to facilitate communication based on the optimal beam, thereby improving the communication efficiency of the communication system.

[0163] Specifically, the difference between the real-time signal quality parameter and the predicted signal quality parameter of each predicted beam can be calculated respectively, if the difference is less than or equal to the third threshold, it can be determined that the predicted beam is a trusted beam, and if the difference is greater than the third threshold, it can be determined that the predicted beam is a non-trusted beam.

[0164] In the embodiment, when the proportion of the trusted beams in the predicted beams is less than or equal to the fourth threshold, it can be considered that the prediction accuracy of the second model is low, that is, it can be determined that the performance of the second model is poor, at this time, the performance monitoring of the second model can be started, and it can be decided whether to modify the parameters in the second model and retrain the second model.

[0165] As can be known from the foregoing examples, the embodiments of the present application can group the narrow beams with similar historical RSRP in the wide beam, and select a reference beam in each group, and form a "reference beam set" by all the reference beams, and the TCI-State corresponding to each reference beam also forms a "TCI-State set", which is equivalent to pre-configuring the TCI-State. When the top-k beams need to be measured, the corresponding beam group can be selected according to the top-k beams, and then the corresponding reference beam and the corresponding TCI-State are selected from the beam group, and the reference beam is used for beam scanning in turn, the UE measures the quality of the reference beam, and then the quality of the top-k beam can be calculated through error compensation, thereby reducing the number of TCI-State combinations.

[0166] Please refer to Figure 6 , Figure 6 The flowchart of another beam management method provided by the embodiments of the present application is shown in FIG. 6. The beam management method provided by the embodiments of the present application mainly includes the following steps:

[0167] S601. The first communication device sends a TCI-State set, and correspondingly, the second communication device receives the TCI-State set.

[0168] The TCI-State set includes one or more TCI-States, the TCI-State is used to indicate the quasi co-location (QCL) information of the reference beam, the TCI-State set includes a target TCI-State; one reference beam corresponds to one beam set, and the beams in the beam set belong to the same wide beam, and the difference between the historical signal quality parameter of the reference beam and the historical signal quality parameter of each beam in the beam set is less than a first threshold.

[0169] The content of the above step S601 is similar to that of the step S501 in the foregoing embodiments, and will not be repeated here.

[0170] S602. The second communication device performs beam prediction based on a second model to obtain a predicted beam.

[0171] The to-be-measured beam includes the predicted beam, and the predicted beam is a beam whose predicted signal quality parameter predicted by the first communication device based on the second model is greater than or equal to a second threshold.

[0172] In the embodiments of the present application, the second communication device can be deployed with a second model for beam prediction, wherein the second model can be pre-trained, and is used to predict a beam with a better signal quality parameter in the current communication scenario, that is, the second model can be used to predict a beam with a predicted signal quality parameter greater than or equal to a second threshold. It can be understood that the second communication device can pre-determine one or more beams that can be used to communicate with the first communication device, and input the historical signal quality parameters and other parameters of the one or more beams into the second model as input data, to predict one or more predicted beams with better signal quality parameters in the current communication scenario, for example, to predict top-k beams, and to predict the predicted signal quality parameter of each predicted beam.

[0173] S603. The second communication device sends second information.

[0174] The second information is used to indicate the predicted beam.

[0175] In the embodiments of the present application, after the second communication device predicts the predicted beam through the second model, the second communication device can indicate the predicted beam to the first communication device through the second information. It can be understood that the second information can include identification information of the predicted beam, so that the first communication device can determine the predicted beam based on the identification information of the predicted beam after receiving the second information.

[0176] In one possible implementation manner of the embodiments of the present application, the second information is also used to indicate the predicted signal quality parameter of the predicted beam.

[0177] In the embodiments of the present application, in addition to indicating the predicted beam based on the second model to the first communication device through the second information, the second communication device can also indicate the predicted signal quality parameter of the predicted beam to the first communication device through the second information, so that the first communication device can determine the prediction accuracy of the predicted beam based on the real-time signal quality parameter of the predicted beam and the predicted signal quality parameter of the predicted beam after determining the real-time signal quality parameter of the predicted beam, to determine whether to start performance monitoring on the second model.

[0178] S604. The first communication device sends first information, and correspondingly, the second communication device receives the first information.

[0179] The first information is used to indicate an activated target transmission configuration indication state TCI-State, and the target TCI-State is used to indicate the quasi co-location QCL information of a target reference beam, wherein the target reference beam is determined based on a to-be-tested beam, and the difference between the historical signal quality parameter of the target reference beam and the historical signal quality parameter of the to-be-tested beam is less than or equal to a first threshold.

[0180] S605. The first communication device scans a target reference beam.

[0181] S606. The second communication device measures a real-time signal quality parameter of the target reference beam.

[0182] The real-time signal quality parameter of the target reference beam is measured based on quasi co-location (QCL) information of the target reference beam.

[0183] S607. The second communication device sends the real-time signal quality parameter of the target reference beam, and correspondingly, the first communication device receives the real-time signal quality parameter of the target reference beam.

[0184] The real-time signal quality parameter of the target reference beam is used to calculate a real-time signal quality parameter of a to-be-measured beam, and the real-time signal quality parameter of the target reference beam is measured based on quasi co-location (QCL) information of the target reference beam.

[0185] S608. The first communication device determines an optimal beam based on the real-time signal quality parameter of the to-be-measured beam.

[0186] The optimal beam is a to-be-measured beam with the largest real-time signal quality parameter.

[0187] The contents of steps S604-S608 are similar to the contents of steps S503-S507 in the foregoing embodiments, and will not be described here again.

[0188] As can be known from the foregoing examples, the embodiments of the present application can group narrow beams with similar historical RSRP in a wide beam, select a reference beam in each group, form a "reference beam set" with all the reference beams, and form a "TCI-State set" with TCI-States corresponding to each reference beam, which is equivalent to pre-configuring TCI-States. When top-k beams need to be measured, corresponding beam groups can be selected according to the top-k beams, and corresponding reference beams and TCI-States can be selected from the beam groups, and the reference beams are used for beam scanning in turn, the UE measures the quality of the reference beams, and the quality of the top-k beams can be calculated through error compensation, thereby reducing the number of TCI-State combinations.

[0189] Figure 7 A structural schematic diagram of a communication device provided by the embodiments of the present application is provided. The communication device is used to realize the functions of the first communication device in the method embodiments, and specifically includes:

[0190] The sending module 701 is configured to send first information, where the first information is used to indicate an activated target transmission configuration indication state (TCI-State), and the target TCI-State is used to indicate quasi co-location (QCL) information of a target reference beam, and the target reference beam is determined based on a to-be-tested beam, and a difference between a historical signal quality parameter of the target reference beam and a historical signal quality parameter of the to-be-tested beam is less than or equal to a first threshold value.

[0191] The scanning module 702 is configured to scan the target reference beam.

[0192] The receiving module 703 is configured to receive a real-time signal quality parameter of the target reference beam, and the real-time signal quality parameter of the target reference beam is used to calculate a real-time signal quality parameter of the to-be-tested beam.

[0193] In a possible implementation manner of the embodiment of the present application, the apparatus further includes:

[0194] The sending module 701 is further configured to send a TCI-State set, where the TCI-State set includes one or more TCI-States, the TCI-States are used to indicate QCL information of reference beams, the TCI-State set includes the target TCI-State, one of the reference beams corresponds to one beam set, beams in the beam set belong to a same wide beam, and a difference between a historical signal quality parameter of the reference beam and a historical signal quality parameter of each beam in the beam set is less than a first threshold value.

[0195] In a possible implementation manner of the embodiment of the present application, the beam set is determined by the first communication apparatus based on a result of sorting the historical signal quality parameters of the beams.

[0196] In a possible implementation manner of the embodiment of the present application, the beam set is determined by the first communication apparatus based on clustering the historical signal quality parameters of the beams based on a first model.

[0197] In a possible implementation manner of the embodiment of the present application, the real-time signal quality parameter of the to-be-tested beam is determined based on a difference between the real-time signal quality parameter of the target reference beam and a historical signal quality parameter difference value, and the historical signal quality parameter difference value is a difference between the historical signal quality parameter of the target reference beam and a historical signal quality parameter of the to-be-tested beam.

[0198] In a possible implementation manner of the embodiment of the present application, the to-be-tested beam includes a predicted beam, and the predicted beam is a beam whose predicted signal quality parameter predicted by the first communication apparatus based on a second model is greater than or equal to a second threshold value.

[0199] In a possible implementation of the embodiments of the present application, the first indication information is used to indicate identification information of the first grid, and the identification information of the first grid is used to determine the first resource corresponding to the first grid.

[0200] In a possible implementation of the embodiments of the present application, the apparatus further includes:

[0201] The receiving module 703 is further configured to receive second information, where the second information is used to indicate a predicted beam; and the to-be-tested beam includes a predicted beam, where the predicted beam is a beam whose predicted signal quality parameter predicted by a second communication apparatus based on a second model is greater than or equal to a second threshold.

[0202] In a possible implementation of the embodiments of the present application, the second information is further used to indicate a predicted signal quality parameter of the predicted beam.

[0203] In a possible implementation of the embodiments of the present application, the apparatus further includes:

[0204] The determining module is configured to determine an optimal beam based on the real-time signal quality parameter of the to-be-tested beam, where the optimal beam is the to-be-tested beam with the maximum real-time signal quality parameter.

[0205] In a possible implementation of the embodiments of the present application, in a case where the to-be-tested beam includes a predicted beam, the optimal beam is a trusted beam with the maximum real-time signal quality parameter in the predicted beam, and a difference between the real-time signal quality parameter of the trusted beam and a predicted signal quality parameter of the trusted beam is less than or equal to a third threshold.

[0206] In a possible implementation of the embodiments of the present application, the first information includes index information of the target TCI-State.

[0207] In a possible implementation of the embodiments of the present application, the first information is sent based on a medium access control control element (MAC CE) or downlink control information (DCI).

[0208] In a possible implementation of the embodiments of the present application, the historical signal quality parameter includes a historical physical layer reference signal received power (L1-RSRP), and the real-time signal quality parameter includes a real-time L1-RSRP.

[0209] It can be known through the foregoing examples that the first communication device can configure a target TCI-State for indicating QCL information of a target reference beam to the second communication device in advance, so that when it is necessary to measure a to-be-measured beam, the target TCI-State of the target reference beam corresponding to the to-be-measured beam can be directly indicated and activated through the first information, and the measurement of the to-be-measured beam is implemented based on the target reference beam, that is, frequent signaling transmission is not required in the beam measurement process, signaling overhead of beam management is reduced, and resource utilization rate during beam management is improved.

[0210] It should be particularly noted that the entity device corresponding to the sending module 701 can be a transmitter, and the entity device corresponding to the receiving module 702 can be a receiver.

[0211] Figure 8 A structural diagram of a communication device is provided in the embodiments of the present application. The communication device is used to implement the functions of the second communication device in the foregoing method embodiments, and specifically includes:

[0212] The receiving module 801 is configured to receive first information, where the first information is used to indicate activation of a target transmission configuration indication state (TCI-State), and the target TCI-State is used to indicate quasi co-location (QCL) information of a target reference beam, the target reference beam is determined based on a to-be-measured beam, and a difference between a historical signal quality parameter of the target reference beam and a historical signal quality parameter of the to-be-measured beam is less than or equal to a first threshold value.

[0213] The sending module 802 is configured to send a real-time signal quality parameter of the target reference beam, where the real-time signal quality parameter of the target reference beam is used to calculate a real-time signal quality parameter of the to-be-measured beam, and the real-time signal quality parameter of the target reference beam is measured based on the QCL information of the target reference beam.

[0214] In a possible implementation manner of the embodiments of the present application, the device further includes:

[0215] The receiving module 801 is further configured to receive a TCI-State set, where the TCI-State set includes one or more TCI-States, the TCI-States are used to indicate QCL information of reference beams, the TCI-State set includes the target TCI-State, one of the reference beams corresponds to one beam set, beams in the beam set belong to a same wide beam, and a difference between a historical signal quality parameter of the reference beam and a historical signal quality parameter of each beam in the beam set is less than a first threshold value.

[0216] In a possible implementation of the embodiments of the present application, the set of beams is determined by the first communication device based on a first model.

[0217] In a possible implementation of the embodiments of the present application, the set of beams is determined by the first communication device based on clustering of the historical signal quality parameters of each beam based on a first model.

[0218] In a possible implementation of the embodiments of the present application, the real-time signal quality parameter of the to-be-tested beam is determined based on a difference between the real-time signal quality parameter of the target reference beam and a historical signal quality parameter difference, the historical signal quality parameter difference being a difference between the historical signal quality parameter of the target reference beam and the historical signal quality parameter of the to-be-tested beam.

[0219] In a possible implementation of the embodiments of the present application, the to-be-tested beam includes a predicted beam, the predicted beam being a beam whose predicted signal quality parameter predicted by the first communication device based on a second model is greater than or equal to a second threshold.

[0220] In a possible implementation of the embodiments of the present application, the apparatus further includes:

[0221] The sending module 802 is further configured to send second information, the second information being used to indicate a predicted beam; and the to-be-tested beam includes a predicted beam, the predicted beam being a beam whose predicted signal quality parameter predicted by the second communication device based on a second model is greater than or equal to a second threshold.

[0222] In a possible implementation of the embodiments of the present application, the second information is further used to indicate the predicted signal quality parameter of the predicted beam.

[0223] In a possible implementation of the embodiments of the present application, the first information includes index information of the target TCI-State.

[0224] In a possible implementation of the embodiments of the present application, the first information is sent based on a medium access control control element (MAC CE) or downlink control information (DCI).

[0225] In a possible implementation of the embodiments of the present application, the historical signal quality parameter includes a historical physical layer reference signal received power (L1-RSRP), and the real-time signal quality parameter includes a real-time L1-RSRP.

[0226] As can be known from the foregoing examples, the first communication apparatus can pre-configure the target TCI-State of the QCL information indicating the target reference beam to the second communication apparatus, so that when it is necessary to measure the to-be-measured beam, the target TCI-State of the target reference beam corresponding to the to-be-measured beam can be directly indicated by the first information, and the measurement of the to-be-measured beam is realized based on the target reference beam, that is, no frequent signaling transmission is required in the beam measurement process, the signaling overhead of the beam management is reduced, and the resource utilization rate during the beam management is improved.

[0227] It should be particularly noted that the entity device corresponding to the sending module 802 can be a transmitter, and the entity device corresponding to the receiving module 801 can be a receiver.

[0228] Figure 9 An example of an electronic device is provided for the embodiments of the present application. The electronic device can be a first device, including but not limited to a base station, a core network unit. Figure 9 A simplified base station structure diagram is shown. The base station includes a 910 part, a 920 part, and a 930 part. The 910 part is mainly used for baseband processing, controlling the base station, etc.; the 910 part is usually the control center of the base station, which can be referred to as a processor, and is used to control the base station to perform the processing operations of the first device side in the above method embodiments. The 920 part is mainly used for storing computer program codes and data. The 930 part is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals; the 930 part can be referred to as a transceiver module, a transceiver, a transceiving circuit, or a transceiver, etc. The transceiver module of the 930 part, which can also be referred to as a transceiver or a transceiver, includes an antenna 933 and a radio frequency circuit, wherein the radio frequency circuit is mainly used for radio frequency processing. Optionally, the devices in the 930 part for realizing the receiving function can be regarded as a receiver, and the devices for realizing the transmitting function can be regarded as a transmitter, that is, the 930 part includes a receiver 932 and a transmitter 931. The receiver can also be referred to as a receiving module, a receiver, or a receiving circuit, etc., and the transmitter can be referred to as a transmitting module, a transmitter, or a transmitting circuit, etc.

[0229] The 910 part and the 920 part can include one or more single boards, and each single board can include one or more processors and one or more memories. The processor is used to read and execute the program in the memory to realize the baseband processing function and the control of the base station. If there are multiple single boards, the single boards can be interconnected to enhance the processing capability. As an optional implementation, the multiple single boards can also share one or more processors, or share one or more memories, or share one or more processors at the same time.

[0230] For example, in an implementation, the transceiver module of the 930 part is configured to perform the transceiver-related procedures performed by the base station (first device) in the foregoing method embodiments. The processor of the 910 part is configured to perform the processing-related procedures performed by the base station in the foregoing method embodiments.

[0231] It should be understood that, Figure 9 For example, but not limited to, the network device described above including the processor, the memory and the transceiver can not depend on Figure 9 The structure shown.

[0232] The present application also provides a communication system, which can include a first device (such as a network device, such as a base station) and a second device (such as a terminal device, such as a mobile phone).

[0233] In the present application, the terminal device or the network device can include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer can include a central processing unit (CPU), a memory management module (MMU), a memory (also known as main memory), and other hardware. The operating system of the operating system layer can be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system, etc. The application layer can include browsers, address books, word processing software, instant messaging software, etc.

[0234] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and module described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0235] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and actual implementation can have another division manner, for example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed can be indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0236] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0237] In addition, the functional modules in each embodiment of the present application can be integrated into one processing module, or each module can exist physically alone, or two or more modules can be integrated into one module. The integrated module can be realized in the form of hardware or in the form of a software functional module.

[0238] The integrated module, if realized in the form of a software functional module and sold or used as an independent product, can be stored in a computer readable storage medium. Based on this understanding, the essential part of the technical solutions of the present application or the whole or part of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the processes of the methods described in each embodiment of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and various program code storage media.

[0239] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A beam management method, characterized in that, The method is applied to a first communication device, and comprises the following steps: sending first information, the first information being used to indicate a target transmission configuration indication state (TCI-State), the target TCI-State being used to indicate quasi co-location (QCL) information of a target reference beam, the target reference beam being determined based on a to-be-tested beam, a difference between a historical signal quality parameter of the target reference beam and a historical signal quality parameter of the to-be-tested beam being less than or equal to a first threshold value; scanning the target reference beam; receiving a real-time signal quality parameter of the target reference beam, the real-time signal quality parameter of the target reference beam being used to calculate a real-time signal quality parameter of the to-be-tested beam.

2. The method of claim 1, wherein, The method further comprises the following steps: sending a TCI-State set, the TCI-State set comprising one or more TCI-States, the TCI-States being used to indicate QCL information of reference beams, the TCI-State set comprising the target TCI-State, one of the reference beams corresponding to one beam set, beams in the beam set belonging to a same wide beam, a difference between a historical signal quality parameter of the reference beam and a historical signal quality parameter of each beam in the beam set being less than the first threshold value.

3. The method of claim 2, wherein, The beam set is determined by the first communication device based on a result of sorting the historical signal quality parameters of the beams.

4. The method of claim 2, wherein, The beam set is determined by the first communication device based on a result of clustering the historical signal quality parameters of the beams based on a first model.

5. The method according to any one of claims 1 to 4, characterized in that, The real-time signal quality parameter of the to-be-tested beam is determined based on a difference between the real-time signal quality parameter of the target reference beam and a historical signal quality parameter, the historical signal quality parameter difference being a difference between the historical signal quality parameter of the target reference beam and the historical signal quality parameter of the to-be-tested beam.

6. The method according to any one of claims 1 to 4, characterized in that, The to-be-tested beam comprises a predicted beam, the predicted beam being a beam whose predicted signal quality parameter predicted by the first communication device based on a second model is greater than or equal to a second threshold value.

7. The method according to any one of claims 1 to 4, characterized in that, The method further comprises the following steps: receiving second information, the second information being used to indicate a predicted beam, the to-be-tested beam comprising a predicted beam, the predicted beam being a beam whose predicted signal quality parameter predicted by a second communication device based on a second model is greater than or equal to a second threshold value.

8. The method of claim 7, wherein, The second information is also used to indicate the predicted signal quality parameter of the predicted beam.

9. The method according to any one of claims 1 to 4, characterized in that, The method further comprises the following steps: determining an optimal beam based on the real-time signal quality parameter of the to-be-tested beam, the optimal beam being the to-be-tested beam with the largest real-time signal quality parameter.

10. The method of claim 9, wherein, In the case where the to-be-tested beam comprises a predicted beam, the optimal beam is a trusted beam with the largest real-time signal quality parameter in the predicted beam, a difference between the real-time signal quality parameter of the trusted beam and a predicted signal quality parameter of the trusted beam being less than or equal to a third threshold value.

11. The method according to any one of claims 1 to 4, characterized in that, The first information comprises index information of the target TCI-State.

12. The method according to any one of claims 1 to 4, characterized in that, The first information is sent based on a medium access control control element (MAC CE) or downlink control information (DCI).

13. The method according to any one of claims 1 to 4, characterized in that, The historical signal quality parameter comprises a historical physical layer reference signal received power L1-RSRP, and the real-time signal quality parameter comprises a real-time L1-RSRP. 14.A method for beam management, the method comprising: The method is applied to the second communication device, and the method comprises: receiving first information, the first information being used to indicate a target transmission configuration indication state TCI-State, the target TCI-State being used to indicate quasi co-location QCL information of a target reference beam, the target reference beam being determined based on a to-be-tested beam, and a difference between a historical signal quality parameter of the target reference beam and a historical signal quality parameter of the to-be-tested beam being less than or equal to a first threshold value; sending a real-time signal quality parameter of the target reference beam, the real-time signal quality parameter of the target reference beam being used to calculate a real-time signal quality parameter of the to-be-tested beam, and the real-time signal quality parameter of the target reference beam being measured based on the quasi co-location QCL information of the target reference beam.

15. The method of claim 14, wherein, The method further comprises: receiving a TCI-State set, the TCI-State set comprising one or more TCI-States, the TCI-States being used to indicate quasi co-location QCL information of reference beams, the TCI-State set comprising the target TCI-State, one of the reference beams corresponding to one beam set, beams in the beam set belonging to a same wide beam, and a difference between a historical signal quality parameter of the reference beam and a historical signal quality parameter of each beam in the beam set being less than a first threshold value.

16. The method of claim 15, wherein, The beam set is determined by the first communication device based on a result of sorting the historical signal quality parameters of the beams.

17. The method of claim 15, wherein, The beam set is determined by the first communication device based on clustering of the historical signal quality parameters of the beams based on a first model.

18. The method according to any one of claims 14 to 17, characterized in that, The real-time signal quality parameter of the to-be-tested beam is determined based on a difference between a real-time signal quality parameter of the target reference beam and a historical signal quality parameter, and the historical signal quality parameter difference is a difference between the historical signal quality parameter of the target reference beam and the historical signal quality parameter of the to-be-tested beam.

19. The method according to any one of claims 14 to 17, characterized in that, The to-be-tested beam comprises a predicted beam, and the predicted beam is a beam whose predicted signal quality parameter predicted by the first communication device based on a second model is greater than or equal to a second threshold value.

20. The method according to any one of claims 14 to 17, characterized in that, The method further comprises: sending second information, the second information being used to indicate a predicted beam, and the to-be-tested beam comprising a predicted beam whose predicted signal quality parameter predicted by the second communication device based on a second model is greater than or equal to a second threshold value.

21. The method of claim 20, wherein, The second information is also used to indicate a predicted signal quality parameter of the predicted beam.

22. The method according to any one of claims 14 to 17, characterized in that, The first information comprises index information of the target TCI-State.

23. The method according to any one of claims 14 to 17, characterized in that, The first information is sent based on a medium access control control element MAC CE or downlink control information DCI.

24. The method according to any one of claims 14 to 17, characterized in that, The historical signal quality parameter comprises a historical physical layer reference signal received power L1-RSRP, and the real-time signal quality parameter comprises a real-time L1-RSRP.

25. A communications device, characterized by An apparatus comprising a processor coupled with a memory having stored therein program or instructions, the processor executing the program or instructions to cause the apparatus to perform the method of any of claims 1 to 24.

26. A computer readable storage medium having stored thereon a computer program or instructions, characterized in that, The computer program or instructions, when executed, cause a computer to perform the method of any of claims 1 to 24.

27. A communication system, characterized by An apparatus as claimed in claim 25.

28. A chip system comprising one or more processors for invoking and running instructions stored in a memory such that the method of any of claims 1 to 24 is performed.

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