WO2024174818A1 - Beam management method and apparatus - Google Patents

Abstract

Provided in the embodiments of the present disclosure are a beam management method and apparatus. The method, which is applied to a first terminal, comprises: determining first information (S110), wherein the first information is indicated to the first terminal by a first device or the first information is existing information of the first terminal; and determining a first beam on the basis of the first information (S120), wherein the first beam is used for the first terminal to communicate with a second terminal.

Description

Beam management method and device

CROSS-REFERENCE TO RELATED APPLICATIONS

This disclosure claims priority to Chinese patent application No. 202310192026.X, filed on February 24, 2023, entitled “Beam Management Method and Device,” which is incorporated herein by reference in its entirety.

Technical Field

The present disclosure relates to the field of communication technology, and in particular to a beam management method and device.

Background Art

There is no beam management standard in the existing sidelink technology. With the evolution of Sidelink technology, millimeter wave frequency band (Frequency range 2, FR2 band) communication has become an important research direction. FR2 band refers to the millimeter wave frequency band between 24.25GHz and 52.6GHz. Compared with traditional low-frequency band (such as below 6GHz) transmission, high-frequency band millimeter wave communication faces unique challenges, such as greater path loss and easy interruption of communication when the transmission channel is blocked. Therefore, it is necessary to introduce beamforming technology into Sidelink technology.

Currently, designing a new beam management solution for Sidelink communication has become an urgent problem to be solved.

Summary of the invention

The embodiments of the present disclosure provide a beam management method and device to solve the problem of lack of beam management solutions in the Sidelink technology in the prior art.

In a first aspect, an embodiment of the present disclosure provides a beam management method, which is applied to a first terminal, including:

Determine first information, where the first information is indicated by a first device to the first terminal or the first information is existing information of the first terminal;

A first beam is determined based on the first information, where the first beam is used for the first terminal to communicate with a second terminal.

Optionally, the method further comprises:

In a case where a PC5-RRC connection is not established with the second terminal, the first information is a priori information;

The prior information includes a second beam, where the second beam is a beam used by the first terminal and the second terminal during the last communication; and/or

The prior information includes a synchronization signal block SSB received and sent by the second terminal.

Optionally, the method further comprises:

In the case of establishing a PC5-RRC connection with the second terminal, the first information is the first motion information corresponding to the second terminal at the current moment, and the first motion information is indicated by the second terminal to the first terminal through the first signaling.

Optionally, the first information is used to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms, and the plurality of beam scanning mechanisms have different beam widths;

The determining the first beam based on the first information includes:

determining the target beam scanning mechanism based on the first information;

The first beam is determined by the target beam scanning mechanism.

Optionally, when the priori information is the second beam, determining the first beam based on the first information includes:

determining the second beam as the first beam;

Or when the prior information is the received SSB sent by the second terminal, determining the first beam based on the first information includes:

A beam corresponding to the direction of the SSB is determined as the first beam.

Optionally, the effective time of the second beam is the first time.

Optionally, determining the first beam based on the first information includes:

Determine the next moment position of the second terminal based on the first motion information corresponding to the second terminal at the current moment;

The first beam is determined based on the next moment position of the second terminal.

Optionally, the first motion information corresponding to the second terminal includes at least one of the following:

location information corresponding to the second terminal;

speed information corresponding to the second terminal;

The movement direction information corresponding to the second terminal.

Optionally, the method further comprises:

A second signaling is sent to the second terminal, where the second signaling is used to indicate second motion information corresponding to the first terminal at the current moment, where the second motion information is used by the second terminal to determine a third beam, and where the third beam is used by the second terminal to communicate with the first terminal.

Optionally, the second motion information corresponding to the first terminal includes at least one of the following:

location information corresponding to the first terminal;

speed information corresponding to the first terminal;

The movement direction information corresponding to the first terminal.

Optionally, the first information includes:

Speed information corresponding to the first terminal; and/or

The beam scanning indication information is used to indicate the target beam scanning mechanism, where the beam scanning indication information is sent by the first device to the first terminal through third signaling.

Optionally, when the first information is speed information corresponding to the first terminal, determining a target beam scanning mechanism based on the first information includes:

When the speed corresponding to the first terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism;

When the speed corresponding to the first terminal does not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism.

Optionally, the method further comprises:

When the beam scanning mechanism determined by the first terminal is different from the beam scanning mechanism determined by the second terminal, the beam scanning mechanism with a wider beam width between the beam scanning mechanism determined by the first terminal and the beam scanning mechanism determined by the second terminal is used as the target beam scanning mechanism.

Optionally, the method further comprises:

A fourth signaling is sent to the second terminal, where the fourth signaling is used to indicate the target beam scanning mechanism.

Optionally, the sending a fourth signaling to the second terminal includes:

After the speed state corresponding to the first terminal is maintained for a second time, the second terminal is sent Describe the fourth signaling.

Optionally, the first device is any one of the following:

the second terminal;

Network equipment;

A third terminal, wherein the third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

In a second aspect, an embodiment of the present disclosure further provides a beam management method, which is applied to a third terminal, including:

Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal;

Sending a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism;

The third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

Optionally, determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal includes:

When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism;

When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type Beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

In a third aspect, an embodiment of the present disclosure further provides a beam management method, which is applied to a network device, including:

Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal;

A third signaling is sent to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism.

Optionally, determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal includes:

When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism;

When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

In a fourth aspect, an embodiment of the present disclosure further provides a first terminal, including a memory, a transceiver, and a processor, wherein:

A memory for storing a computer program; a transceiver for transmitting and receiving under the control of the processor data; a processor, used to read the computer program in the memory and implement the beam management method as described in the first aspect as mentioned above.

In a fifth aspect, an embodiment of the present disclosure further provides a third terminal, including a memory, a transceiver, and a processor, wherein:

A memory for storing a computer program; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer program in the memory and implementing the beam management method as described in the second aspect above.

In a sixth aspect, an embodiment of the present disclosure further provides a network device, including a memory, a transceiver, and a processor, wherein:

A memory for storing a computer program; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer program in the memory and implementing the beam management method as described in the third aspect above.

In a seventh aspect, an embodiment of the present disclosure further provides a beam management device, applied to a first terminal, including:

A first information determining unit, configured to determine first information, where the first information is indicated by the first device to the first terminal or the first information is existing information of the first terminal;

The first beam determining unit is configured to determine a first beam based on the first information, where the first beam is used for the first terminal to communicate with a second terminal.

In an eighth aspect, an embodiment of the present disclosure further provides a beam management device, applied to a third terminal, including:

A second mechanism determination unit, configured to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms according to speed information of the first terminal and the second terminal;

A second sending unit, configured to send a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism;

The third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

In a ninth aspect, an embodiment of the present disclosure further provides a beam management device, applied to a network device, including:

A third mechanism determination unit, configured to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms according to speed information of the first terminal and the second terminal;

The third sending unit is used to send a third signaling to the first terminal and the second terminal respectively, and the third signaling is used to indicate the target beam scanning mechanism.

In the tenth aspect, an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the beam management method described in the first aspect as described above.

In the eleventh aspect, an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the beam management method described in the second aspect as described above.

In the twelfth aspect, an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the beam management method described in the third aspect as described above.

The embodiments of the present disclosure provide a beam management method and device, wherein the method applied to a first terminal includes: determining first information, where the first information is indicated by a first device to the first terminal or the first information is existing information of the first terminal; determining a first beam based on the first information, where the first beam is used for the first terminal to communicate with a second terminal. The beam management method and device provided by the embodiments of the present disclosure can be applied to a sidelink scenario to enable communication between a first terminal and a second terminal.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of a joint transmission and reception measurement provided by an embodiment of the present disclosure;

FIG2 is a flow chart of a beam management method according to an embodiment of the present disclosure;

FIG3 is one of the terminal communication schematic diagrams provided in an embodiment of the present disclosure;

FIG4 is one of the beam selection schematic diagrams provided in an embodiment of the present disclosure;

FIG5 is a second schematic diagram of beam selection provided in an embodiment of the present disclosure;

FIG6 is a second flow chart of a beam management method provided in an embodiment of the present disclosure;

FIG7 is a third flowchart of a beam management method provided by an embodiment of the present disclosure;

FIG8 is a second schematic diagram of terminal communication provided by an embodiment of the present disclosure;

FIG9 is a third schematic diagram of terminal communication provided in an embodiment of the present disclosure;

FIG10 is one of the schematic diagrams of terminal position changes provided in an embodiment of the present disclosure;

FIG11 is a third schematic diagram of beam selection provided in an embodiment of the present disclosure;

FIG12 is a second schematic diagram of a terminal position change according to an embodiment of the present disclosure;

FIG13 is a fourth schematic diagram of beam selection provided in an embodiment of the present disclosure;

FIG14 is a third schematic diagram of terminal position change provided in an embodiment of the present disclosure;

FIG15 is a fifth schematic diagram of beam selection provided in an embodiment of the present disclosure;

FIG16 is a fourth schematic diagram of terminal position change provided in an embodiment of the present disclosure;

FIG17 is a sixth schematic diagram of beam selection provided in an embodiment of the present disclosure;

FIG18 is a schematic diagram of a beam scanning mechanism provided by an embodiment of the present disclosure;

FIG19 is a second schematic diagram of a beam scanning mechanism provided by an embodiment of the present disclosure;

FIG20 is a third schematic diagram of a beam scanning mechanism provided in an embodiment of the present disclosure;

FIG21 is a fourth schematic diagram of a beam scanning mechanism provided in an embodiment of the present disclosure;

FIG22 is a schematic diagram of a structure of a beam management device provided in an embodiment of the present disclosure;

FIG23 is a second schematic diagram of the structure of a beam management device provided in an embodiment of the present disclosure;

FIG24 is a third structural diagram of a beam management device provided in an embodiment of the present disclosure;

FIG25 is a schematic diagram of the structure of a first terminal provided in an embodiment of the present disclosure;

FIG26 is a schematic diagram of the structure of a third terminal provided in an embodiment of the present disclosure;

FIG. 27 is a schematic diagram of the structure of a network device provided in an embodiment of the present disclosure.

DETAILED DESCRIPTION

In the embodiments of the present disclosure, the term "and/or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects before and after are in an "or" relationship.

The term "plurality" in the embodiments of the present disclosure refers to two or more than two, and other quantifiers are similar thereto.

The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

The technical solution provided by the embodiments of the present disclosure can be applied to a variety of systems, especially 5G (5th Generation Mobile Communication Technology) system. For example, applicable systems may be global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G new radio (NR) system, etc. These various systems include terminal equipment and network equipment. The system can also include core network parts, such as the Evolved Packet System (EPS), 5G system (5GS), etc.

The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the names of terminal devices may also be different. For example, in a 5G system, a terminal device may be called a user equipment (UE). A wireless terminal device may communicate with one or more core networks (CN) via a radio access network (RAN). A wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device, for example, a portable, pocket-sized device. Mobile devices such as portable, handheld, built-in or in-vehicle devices that exchange language and/or data with a wireless access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDA) and other devices. Wireless terminal devices may also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, access points, remote terminal devices, access terminal devices, user terminal devices, user agents, and user devices, which are not limited in the embodiments of the present disclosure.

The network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells that provide services to the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolved network device (evolutional Node B, eNB or e-NodeB) in the Long Term Evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a Home evolved Node B (HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., but is not limited in the embodiments of the present disclosure. In some network structures, network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and the distributed unit may also be geographically separated.

Network devices and terminal devices can each use one or more antennas for multiple input multiple output (MIMO) transmission. MIMO transmission can be single-user MIMO. (Single User MIMO, SU-MIMO) or Multi-User MIMO (Multiple User MIMO, MU-MIMO). Depending on the form and number of the root antenna combination, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

To facilitate understanding of the embodiments of the present disclosure, the following describes terms or backgrounds related to the embodiments of the present disclosure:

In the related technology, NR beam management is divided into 6 processing processes: beam selection, beam measurement, beam reporting, beam switching, beam indication and beam recovery.

Beam selection refers to the process in which the base station and UE select the appropriate beam direction to ensure the best link transmission quality during unicast control or data transmission. Beam measurement and beam reporting refer to the process in which the UE measures multiple beams of the base station and multiple receiving beams used by the receiving end after the wireless communication link is established, and reports the measurement results to the base station. Beam switching refers to the process in which the base station and UE select another pair of better quality transceiver beams and perform beam switching when the transmission quality of the paired transceiver beams decreases due to UE movement, direction change, or propagation link obstruction. The base station and UE need to monitor the transmission quality of the selected transceiver beam pair and compare it with other transceiver beam pairs, and perform beam switching when necessary. The base station uses the beam indication process to notify the UE of the sent beam indication through downlink control signaling to facilitate UE acceptance and switching. Beam recovery refers to the process of re-establishing the connection between the base station and the UE when the transmission quality of all detected transceiver beams cannot meet the link transmission requirements.

NR supports the following three beam measurement processes: transmit beam measurement, receive beam measurement, and joint transmit and receive measurement. Transmit beam measurement means that the base station changes the transmit beam for scanning, and the UE fixes the receive beam; receive beam measurement means that the UE changes the receive beam, and the base station fixes the transmit beam; joint transmit and receive measurement means that the transmit and receive beams are measured simultaneously. Figure 1 is a schematic diagram of the joint transmit and receive measurement provided in the embodiment of the present disclosure. The joint transmit and receive measurement process taking the number of base station beams M = 4 and the number of terminal beams N = 2 as an example is shown in Figure 1.

After completing the beam measurement, the UE will select L (L ≥ 1) beams to report based on the measured RSRP, RSRQ or CSI. The CRI or SSBRI reported by the UE represents the transmitting beam selected by the UE. The L1-RSRP reported by the UE at the same time is the quality information of the beam.

When the base station uses analog beamforming to transmit downlink service data, the base station needs to instruct the UE The serial number of the selected downlink simulated transmit beam. After receiving the indication, the UE calls the best receive beam corresponding to the serial number for data reception according to the information stored in the beam training process. The transmit beam indication method can be dynamic or semi-static, depending on factors such as the duration of the indicated beam, the switching speed, and the overhead of the indication information, and also related to the physical channel type.

In high-frequency millimeter wave communication, the transmission signal propagation loss is large and the probability of being blocked is high. Once the beam is blocked, it is easy to cause communication interruption. In the NR protocol, a fast and reliable beam failure detection and recovery process is defined, so that the network side can quickly recover from beam failure. The base station quickly switches the PDCCH transmission from one beam to another, so that the UE can receive control information and resume data transmission. The beam failure recovery technology is introduced by the physical layer, and its process mainly includes beam failure detection (BFD), beam failure recovery (BFR) and related resource reconfiguration. The base station sends the physical downlink control channel (PDCCH) through multiple downlink control channel beams. Downlink beam failure is defined as: the quality of each downlink control channel beam received by the UE is lower than the specified threshold, so that the UE cannot effectively receive the control information sent by the PDCCH. After the beam fails, the UE only needs to report a new candidate beam to the base station based on its own judgment. The base station uses the new beam to send a downlink control instruction to the UE according to the beam failure indication and candidate new beams reported by the UE.

Directly introducing the NR beam management solution into Sidelink has the following problems: In Sidelink, terminals are often in a continuous mobile state. Even in some intelligent connected vehicle technology (Vehicle-to-Everything, V2X) scenarios, the two terminals connected to each other are in a mobile state. Therefore, frequent beam switching problems will occur in the beamforming between terminals. The NR beam management solution in related technologies is divided into six processing steps: beam selection, beam measurement, beam reporting, beam switching, beam indication, and beam recovery. Each beam switching requires beam failure detection, new candidate beam reporting and beam recovery process. The process is too cumbersome and has a great impact on system performance.

The present disclosure provides a beam management method, which determines a first beam based on the first information, where the first beam is used for the first terminal to communicate with the second terminal.

The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, ordinary technicians in this field will not make any creative efforts. All other embodiments obtained under the premise of sexual labor are within the scope of protection of this disclosure.

FIG. 2 is one of the flow charts of a beam management method provided by an embodiment of the present disclosure. As shown in FIG. 2 , an embodiment of the present disclosure provides a beam management method, which is applied to a first terminal, including:

Step 110: determining first information, where the first information is indicated by the first device to the first terminal or the first information is existing information of the first terminal;

Specifically, the first terminal refers to a communication participating terminal in the sidelink communication, and correspondingly, the second terminal is another communication participating terminal in the sidelink communication.

It should be understood that in the embodiment of the present disclosure, the first terminal is used as the execution terminal, and the first terminal can be referred to as UE1 below; the second terminal is used as the relative terminal, and accordingly, the second terminal can execute the same method as the first terminal when used as the execution terminal, and the second terminal can be referred to as UE2 below.

The first information is used by the first terminal to determine the first beam. Optionally, the first information is information related to beam selection, beam switching or beam recovery. The first terminal selects a suitable beam direction through the first information, thereby selecting the first beam to ensure the link transmission quality between the second terminal.

Optionally, the first information may be indicated by the first device to the first terminal.

Exemplarily, the first device may be a second terminal, a third terminal, a network device, or the like.

It should be understood that when the first device is the second terminal, a PC5-RRC (direct communication) connection needs to be established between the first terminal and the second terminal.

When the first device is a third terminal, a PC5-RRC connection needs to be established between the third terminal and the first terminal, and between the third terminal and the second terminal. The third terminal may be referred to as UE3 hereinafter.

In the case where the first device is a network device, a cellular network communication (Uu) interface connection needs to be established between the network device and the first terminal, and between the network device and the second terminal. The Uu interface is a communication interface between the terminal and the base station, which can achieve reliable communication over long distances and a larger range. Exemplarily, the network device can be a roadside unit.

Optionally, the first information may be existing information of the first terminal, such as information already obtained by the first terminal, or information that does not require indication from other devices, such as information of the first terminal itself (speed, location information of the first terminal, etc.).

Step 120: determine a first beam based on the first information, where the first beam is used for the first terminal to communicate with a second terminal.

Specifically, a first beam is determined according to the first information, and the first terminal communicates with the second terminal using the first beam.

The first beam is used for beam communication between the first terminal and the second terminal. The first beam may be a beam that the first terminal can determine most quickly and can establish beam communication with the second terminal, and the first beam may also be an optimal beam.

Optionally, the first information is used to determine the first beam, or the first information is used to determine a target beam scanning mechanism among multiple beam scanning mechanisms, and the target beam scanning mechanism is used to determine the first beam.

In one possible implementation, the first information is used to determine the first beam among multiple beams with different beam directions, such as the first information is used to determine the position of the second terminal relative to the first terminal, and the beam corresponding to the direction of the second terminal relative to the first terminal is selected as the first beam. In this embodiment, the first information can be used to determine the first beam among multiple beams with different beam directions, and beamforming transmission can be achieved without performing cumbersome beam processing.

In one possible implementation, the first information is a beam used in a previous communication between the first terminal and the second terminal, and the first terminal uses the beam used in the previous communication as the first beam to communicate with the second terminal. In this embodiment, the beam used in the previous communication is used as the first beam, and beamforming transmission can be implemented without performing a cumbersome beam processing process.

In one possible implementation, due to the change in terminal movement speed, multiple beam scanning mechanisms can be defined. For example, in a high-speed scenario, in order to ensure communication reliability, a beam scanning mechanism with a wider beam width can be used; in a low-speed scenario, in order to improve link quality, a beam scanning mechanism with a narrower beam width can be selected. The first information is used to determine a target beam scanning mechanism among multiple beam scanning mechanisms. Optionally, the first information can be the speed information of the first terminal, and the beam scanning mechanism is matched through the speed information of the first terminal. Optionally, the first information is used to directly indicate the target beam scanning mechanism. Compared with a single beam scanning mechanism, the target beam scanning mechanism is determined among multiple beam scanning mechanisms through the first information, thereby determining the first beam, and a suitable beam scanning mechanism can be selected, and a better beam can be selected, thereby improving the reliability or quality of link transmission and increasing revenue.

It should be understood that the above is an example for the convenience of understanding the present disclosure and should not constitute any limitation on the present disclosure. The embodiments of the present disclosure do not limit the content of the first information and can achieve the determination of the second information based on the first information. One beam will do.

The beam management method provided by the embodiment of the present disclosure, the first terminal determines the first beam through the first information, the first beam is used for the first terminal to communicate with the second terminal, and the embodiment of the present disclosure provides a beam management method that can be applied to the sidelink scenario to realize the communication between the first terminal and the second terminal.

Optionally, the method further comprises:

When a radio resource control (PC5-Radio Resource Control, PC5-RRC) connection for the side link is not established with the second terminal, the first information is a priori information.

Specifically, the fact that the first terminal and the second terminal do not establish a PC5-RRC connection can be understood as the first terminal and the second terminal do not establish a PC5 connection and cannot send PC5-RRC signaling to each other.

In this case, the first terminal and the second terminal cannot transmit information about the first terminal/the second terminal through PC5-RRC signaling. The first terminal can use the obtained information (prior information) as the first information, and then determine the first beam through the prior information.

In a possible implementation, the first terminal establishes a connection with the second terminal at the first moment, but at the second moment, due to building interference or other reasons, the first terminal and the second terminal are disconnected at the second moment (i.e., no PC5-RRC connection is established). The first terminal can use information that does not require a PC5-RRC connection for transmission as the first information: such as information that has been obtained before the second moment, or information broadcast by the second terminal. Take the information obtained before the second moment as the first information as an example: such as the beam used for communication at the first moment, and the motion information of the second terminal obtained at the first moment. The first terminal continues to use the beam used for communication at the first moment as the first beam at the second moment to communicate with the second terminal. Or the first terminal infers the position of the second terminal at the next moment based on the motion information of the second terminal at the first moment at the first moment, selects the beam in the corresponding direction as the first beam based on the position of the second terminal, and communicates with the second terminal. In this embodiment, the first terminal can quickly resume the interrupted beamforming transmission without performing a cumbersome beam processing process or establishing (restoring) a PC5-RRC connection.

Optionally, the prior information includes a second beam, where the second beam is a beam used by the first terminal and the second terminal during the last communication; and/or

The prior information includes a synchronization signal block (Synchronization Signal Block, SSB) received and sent by the second terminal.

For the second beam, it means that before the first terminal establishes a PC5-RRC connection with the second terminal, the first terminal uses the beam used in the last communication (ie, the previous communication) with the second terminal.

Optionally, when the priori information is the second beam, determining the first beam based on the first information includes:

The second beam is determined as the first beam.

Specifically, the first terminal communicates using the second beam used for the last communication with the second terminal.

Exemplarily, the first terminal and the second terminal use the best beam pair to communicate at the first moment, and the beam used by the first terminal is beam 1 (i.e., the second beam). At time T2, the first terminal and the second terminal have not established a PC5-RRC connection, and the first terminal still selects beam 1 for communication.

Optionally, the effective time of the second beam is the first time.

Specifically, the beam is valid for a certain period of time, and the first terminal may give up using the solution a certain period of time after the last communication ends.

Exemplarily, the second beam has a certain validity period: a first time t (for example, 100ms). The second beam is abandoned after the first time when the last communication ends. The value of t can be configured by the first terminal itself. When the second beam is not used, the first terminal can configure t to 0.

The beam management method provided by the embodiment of the present disclosure does not require establishing (restoring) a PC5-RRC connection, nor does it require a cumbersome beam processing process, and can quickly restore interrupted beamforming transmission; and is more suitable for scenarios where beams are frequently switched in the V2X mode. The terminal has already learned the best beam pair at the next moment before the current beam fails, and therefore has a faster and simpler beam failure recovery process; in addition, due to the simpler beam processing process, the beam management method provided by the embodiment of the present disclosure requires lower computing power and less processing time, and therefore has lower capability requirements for sidelink user equipment (SL-UE), lower power consumption, and longer UE standby time.

Optionally, when the priori information is the received SSB sent by the second terminal, determining the first beam based on the first information includes:

A beam corresponding to the direction of the SSB is determined as the first beam.

Specifically, the first terminal performs beam scanning according to the received SSB, and the SSB may be a sidelink synchronization signal block (Sidelink Synchronization Signal Block, S-SSB) sent by the second terminal. The second terminal sends an S-SSB which is received by the first terminal, and the first terminal communicates using a beam in a corresponding direction.

It should be understood that the first terminal and the second terminal have the same synchronization source.

Exemplarily, the first terminal performs beam selection according to the received SSB: the second terminal sends S-SSB which is received by the first terminal, and the first terminal uses the beam in the corresponding direction for communication after decoding. This scheme requires that the first terminal and the second terminal are in the same synchronization source. The first terminal receives the SSB broadcast by the second terminal, and uses the beam in the corresponding direction for communication after decoding.

The beam management method provided by the embodiment of the present disclosure does not need to establish or restore a PC5-RRC connection, and can perform beamforming transmission with UEs having the same synchronization source. In addition, due to the simpler beam processing process, the beam management method provided by the embodiment of the present disclosure requires lower computing power and less processing time, and therefore has lower capability requirements for sidelink user equipment (SL-UE), lower power consumption, and longer UE standby time.

In the case where the prior information includes the second beam and the received synchronization signal block SSB sent by the second terminal, the first terminal uses the second beam within the first time, and can abandon the use of the second beam after the last communication ends for the first time, and determine the beam corresponding to the direction of the SSB as the first beam.

The beam management method provided by the embodiment of the present disclosure can quickly restore interrupted beamforming transmission; and realize beamforming transmission with UE having the same synchronization source.

Optionally, the method further comprises:

In the case of establishing a PC5-RRC connection with the second terminal, the first information is the first motion information corresponding to the second terminal at the current moment, and the first motion information is indicated by the second terminal to the first terminal through the first signaling.

Specifically, after establishing a PC5-RRC connection with the second terminal, in a scenario where the position of the terminal changes in real time (such as V2X), the second terminal can send its current position, direction and speed information to the first terminal in the form of a first signaling. After the first terminal calculates the position of the second terminal at the next moment based on the above information, it selects a suitable beam for communication.

It should be understood that the first beam in the embodiment of the present disclosure can be used for communication at the next moment.

The beam management method provided in the embodiment of the present disclosure determines the first beam used for communication with the second terminal at the next moment through the motion information at the current moment, without the need for cumbersome beam processing process, and establishes a first beam between UEs. After the PC5-RRC connection is established, the first motion information of the current moment sent by the second terminal can be received through the first signaling, so that the best beam pair can be sent and received at the next moment; the embodiment of the present disclosure can be applicable to the scenario where the beam is frequently switched in the V2X mode. The first terminal can obtain the best beam pair at the next moment before the current beam fails, thereby realizing faster and simpler beam failure recovery processing.

Optionally, the first signaling may be radio resource control (RRC) signaling, sidelink control information (SCI) or downlink control information (DCI) signaling.

Optionally, determining the first beam based on the first information includes:

Determine the next moment position of the second terminal based on the first motion information corresponding to the second terminal at the current moment;

The first beam is determined based on the next moment position of the second terminal.

Specifically, after establishing a PC5-RRC connection with the second terminal, the first terminal can select the beam at the next moment according to the first motion information of the other party at the current moment. The first terminal (UE1) and the second terminal (UE2) send SCI reserved time-frequency resources. After resource reservation, resource monitoring, resource exclusion and resource selection, a PC5-RRC connection is established between UE1 and UE2, and PC5-RRC signaling can be sent to each other.

FIG3 is one of the terminal communication schematic diagrams provided by the embodiments of the present disclosure. As shown in FIG3, UE1 and UE2 can send PC5-RRC signaling to each other. Taking the case where UE2 changes position from time T1 to time T2, and UE1 does not change position as an example, UE2 sends the first motion information, such as UE2's own position information, motion direction information, and speed information at time T1, to UE1 in the form of a first signaling. UE1 obtains the position information of UE2 at time T2 after calculation, and then selects a suitable beam (first beam) to communicate at time T2. In the embodiments of the present disclosure, UE1 can determine the first beam used at time T2 at time T1, and UE has learned the best beam pair at time T2 before the beam fails at time T1, so that a faster and simpler beam failure recovery process can be achieved.

Optionally, the first motion information corresponding to the second terminal includes at least one of the following:

location information corresponding to the second terminal;

speed information corresponding to the second terminal;

The movement direction information corresponding to the second terminal.

Optionally, the method further comprises:

A second signaling is sent to the second terminal, where the second signaling is used to indicate second motion information corresponding to the first terminal at the current moment, where the second motion information is used by the second terminal to determine a third beam, and where the third beam is used by the second terminal to communicate with the first terminal.

Specifically, UE1 also sends its own current position information, movement direction information and speed information to UE2 through the second signaling. After UE2 calculates the position information of UE1 at time T2, it can know the third beam that can be used at time T2 at time T1, thereby quickly achieving the best beam pairing.

It should be understood that the first beam and the third beam can form a transceiver beam pair for communication between the first terminal and the second terminal.

Optionally, the second signaling may be radio resource control (RRC) signaling, sidelink control information (SCI) or downlink control information (DCI) signaling.

Optionally, the second motion information corresponding to the first terminal includes at least one of the following:

location information corresponding to the first terminal;

speed information corresponding to the first terminal;

The movement direction information corresponding to the first terminal.

Specifically, UE1 and UE2 have established a PC5-RRC connection at time T1. At time T1, UE2 sends a first signal to UE1 and UE1 sends a second signal to UE2, sending their own position information, speed information and movement direction information at time T1 (current time) to each other. After time T1, the positions of UE1 and UE2 may change. At time T2, the two calculate each other's position based on the data at time T1, and use the best beam pair to communicate with reference to the calculation results.

Exemplarily, the position change of UE1 and UE2 in the embodiment of the present disclosure can refer to Figure 3. The position of UE2 changes from T1 to T2, while the position of UE1 does not change. Figure 4 is one of the beam selection schematic diagrams provided in the embodiment of the present disclosure. As shown in Figure 4, at T1, UE1 and UE2 use the best beam pair (t4, r2) for communication. According to the first signaling sent by UE2 to UE1 and the information contained in the second signaling sent by UE1 to UE2, UE1 and UE2 can calculate the position of each other at T2. Therefore, at T2, the two terminals directly switch to the best beam pair (t2, r4) for communication, thereby avoiding the cumbersome beam management process. Fast beam switching/beam recovery is achieved.

The beam management method provided by the embodiment of the present disclosure does not require a cumbersome beam processing process. After establishing a PC5-RRC connection between UEs, UE2 can send a first signaling to UE1, and UE1 can send a second signaling to UE2 to send the current position information, speed information, movement direction and other information to the other party, so that the best beam pair can be sent and received at the next moment. It is more suitable for the scenario of frequent beam switching in the V2X mode. The terminal can determine the best beam pair at the next moment through the position calculated at the current moment, so as to quickly realize the sending and receiving of the best beam pair at the next moment. It is suitable for the scenario of frequent beam switching in the V2X mode. The UE has learned the best beam pair at the next moment before the current beam fails, so it has a faster and simpler beam failure recovery processing flow. In addition, due to the simpler beam processing process, the beam management method provided by the embodiment of the present disclosure requires lower computing power and less processing time, so it has lower requirements on the capability of the sidelink user equipment (SL-UE), lower power consumption and longer UE standby time.

Optionally, the first information is used to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms, and the plurality of beam scanning mechanisms have different beam widths;

The determining the first beam based on the first information includes:

determining the target beam scanning mechanism based on the first information;

The first beam is determined by the target beam scanning mechanism.

Specifically, for various beam scanning mechanisms, for example, in a high-speed scenario, in order to ensure communication reliability, a beam scanning mechanism with a wider beam width can be used; in a low-speed scenario, in order to improve link quality, a beam scanning mechanism with a narrower beam width can be selected. It should be understood that the above is an example for the convenience of understanding the present disclosure and should not constitute any limitation to the present disclosure.

Optionally, the determining the first beam by the target beam scanning mechanism includes:

sending a first reference signal to the second terminal according to the target beam scanning mechanism;

receiving first beam indication information sent by the second terminal, where the first beam indication information is used to indicate the first beam, and the first beam indication information is determined by the second terminal according to the received first reference signal;

The first beam is determined based on the first beam indication information.

The first beam indication information is used to indicate the first beam, and the first beam indication information may be a beam index, etc. For the method and process of determining the beam through the beam scanning mechanism, refer to the relevant technology, which will not be described here. Elaborate.

Optionally, the first information includes:

Speed information corresponding to the first terminal; and/or

The beam scanning indication information is used to indicate the target beam scanning mechanism, where the beam scanning indication information is sent by the first device to the first terminal through third signaling.

The first information includes beam scanning indication information for indicating the target beam scanning mechanism:

Optionally, the first device is any one of the following:

the second terminal;

Network equipment;

A third terminal, wherein the third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

Optionally, the third signaling may be radio resource control (RRC) signaling, sidelink control information (SCI) or downlink control information (DCI) signaling.

Optionally, when the first information is speed information corresponding to the first terminal, determining a target beam scanning mechanism based on the first information includes:

When the speed corresponding to the first terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism;

When the speed corresponding to the first terminal does not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism.

Specifically, different beam scanning mechanisms will be selected according to the current speeds of UE1 and UE2, when the speed of UE1 itself is higher than a speed threshold (for example, it can be defined as 100 km/h).

It should be understood that when UE1 and UE2 match the beam scanning mechanism according to the speed, UE1 and UE2 can directly scan according to the beam scanning mechanism matched by the speed, and UE1 and UE2 can also indicate their selected target beam scanning mechanism to each other.

Optionally, UE1 may add second beam scanning indication information to the fourth signaling, which will instruct UE2 to use a wide beam for communication; optionally, when the speed of UE1 drops below a speed threshold, UE1 will instruct UE2 to communicate using a narrow beam.

Optionally, the fourth signaling may be radio resource control (Radio Resource Control, RRC) signaling, sidelink control information (Sidelink Control Information, SCI) or downlink control information (Downlink Control Information, DCI) signaling.

Correspondingly, UE2 may also send beam scanning indication information to UE1 to indicate appropriate beam selection.

Optionally, the method further comprises:

When the beam scanning mechanism determined by the first terminal is different from the beam scanning mechanism determined by the second terminal, the beam scanning mechanism with a wider beam width between the beam scanning mechanism determined by the first terminal and the beam scanning mechanism determined by the second terminal is used as the target beam scanning mechanism.

Specifically, when at least one of the two terminals is in high-speed motion, the system will use a wide beam for communication, and when neither of the two terminals is in high-speed motion, a narrow beam will be used for communication.

It can be determined that the beam scanning mechanism determined by the first terminal is different from the beam scanning mechanism determined by the second terminal through the conflict between the beam scanning indication information carried in the third signaling and the fourth signaling; it can also be determined that the beam scanning mechanism determined by the first terminal is different from the beam scanning mechanism determined by the second terminal after one of the terminals receives the other party's shaped beam by performing beam scanning.

Figure 5 is the second beam selection diagram provided by an embodiment of the present disclosure. As shown in Figure 5, when it is detected that at least one of the two terminals UE1 and UE2 is in high-speed motion, a wide beam will be used for communication. At this time, the best beam pair (t3, r1) is selected for communication. When it is detected that both terminals are not moving at high speed, that is, a normal scenario, a narrow beam will be used for communication. At this time, the best beam pair (t4, r2) is used for communication.

Optionally, the method further includes: sending a fourth signaling to the second terminal, wherein the fourth signaling is used to indicate the target beam scanning mechanism.

Specifically, a fourth signaling is sent to the second terminal, where the fourth signaling carries second beam scanning indication information, which is used to indicate the target beam scanning mechanism selected by the first terminal.

Optionally, the sending a fourth signaling to the second terminal includes:

After the speed state corresponding to the first terminal is maintained for a second time, the fourth signaling is sent to the second terminal.

Specifically, in actual application scenarios, the speeds of UE1 and UE2 may fluctuate continuously, so the speeds may continuously jump around the threshold. To avoid the above ping-pong effect, only when the speed of UE1 is lower than or higher than the speed threshold for a certain period of time, UE1 will perform the above beam indication and send the fourth signaling to the second terminal. For ease of introduction, the speed threshold may be referred to as the threshold.

The beam management method provided by the embodiments of the present disclosure can avoid the ping-pong effect and improve communication reliability.

Optionally, determining the third beam by scanning the target beam includes:

Perform signal measurement according to a target beam scanning mechanism of the second terminal to obtain a measurement result;

determining second beam indication information based on the measurement result, where the second beam indication information is used to indicate a third beam, and the third beam is used for the second terminal to communicate with the first terminal;

The second beam indication information is sent to the second terminal, where the second beam indication information is used to indicate the third beam.

For the method and process of determining the beam through the beam scanning mechanism, please refer to the relevant technology and will not be repeated here.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Specifically, the first type of beam scanning mechanism is referred to as Type 1, and the second type of beam scanning mechanism is referred to as Type 2.

The disclosed embodiments define two sets of beam scanning mechanisms, Type 1 and Type 2. Type 1 can be used in normal scenarios, and Type 2 can be used in high-speed moving scenarios.

It should be understood that the beam scanning mechanism corresponding to the wide beam in the above embodiment may be the second type beam scanning mechanism, and the beam scanning mechanism corresponding to the narrow beam may be the first type beam scanning mechanism.

The beam management method provided in the disclosed embodiment defines two sets of beam scanning mechanisms, Type 1 and Type 2, to achieve free selection of the beam to be used according to changes in the scene. Type 1 is more suitable for scenes with infrequent beam switching and greater interference, such as scenes with dense terminal distribution such as city centers; Type 2 is more suitable for scenes with frequent beam switching and less interference, such as highways and rural scenes.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

Specifically, Type 1 and Type 2 have different beam scanning numbers, beam widths, and beam scanning resources.

Optionally, the number of beam scans of the first type of beam scanning mechanism is greater than the number of beam scans of the second type of beam scanning mechanism.

Optionally, Type 1 has a large number of beams, a narrow beam width, low scanning efficiency, high scanning accuracy, and strong anti-interference capability; Type 2 has a small number of beams, a wide beam width, high scanning efficiency, poor scanning accuracy, and weak anti-interference capability. Both can also use different Channel State Information-Reference Signal (CSI-RS) resources, use different time domain resources, or use different frequency domain resources, or use different combinations of the above resources.

Optionally, the selection of Type 1 and Type 2 beams can be automatically matched with the speed (Type 1 is used when the speed is below the speed threshold, and Type 2 is used when the speed is above the speed threshold), or configured through the fourth signaling (UE1 instructs UE2 to select the beam).

Optionally, after UE1 performs beam scanning, UE2 feeds back the measurement results to UE1. The feedback information includes channel state information rank indication (Channel State Information-Rank Indicator, CSI-RI) or synchronization signal block rank indication (Synchronization Signal Block-Rank Indicator, SSB-RI). After receiving the feedback information, UE1 selects the corresponding beam for transmission according to the indication information obtained by decoding.

The beam management method provided in the disclosed embodiment defines two sets of beam scanning mechanisms, Type 1 and Type 2, to achieve free selection of the beam to be used according to changes in the scene. Type 1 is more suitable for scenes with infrequent beam switching and greater interference, such as scenes with dense terminal distribution such as city centers; Type 2 is more suitable for scenes with frequent beam switching and less interference, such as highways and rural scenes.

FIG6 is a second flow chart of a beam management method provided in an embodiment of the present disclosure. As shown in FIG6 , an embodiment of the present disclosure provides a beam management method, which is applied to a third terminal, including:

Step 210, determining a target beam scanning mechanism among multiple beam scanning mechanisms according to the speed information of the first terminal and the second terminal;

Step 220: Send a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism;

The third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

Specifically, the third terminal may obtain the speed information of the first terminal and the second terminal by referring to the related technology, which will not be described in detail here.

Optionally, the third signaling may be radio resource control (RRC) signaling, sidelink control information (SCI) or downlink control information (DCI) signaling.

For the introduction of various beam scanning mechanisms, please refer to the above introduction and will not be repeated here.

The beam management method provided by the embodiment of the present disclosure determines a target beam scanning mechanism among multiple beam scanning mechanisms, and indicates the target beam scanning mechanism to the first terminal and the second terminal, so that the first terminal and the second terminal can adapt to multiple scenarios.

Optionally, determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal includes:

When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism;

When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

Optionally, the number of beam scans of the first type of beam scanning mechanism is greater than the number of beam scans of the second type of beam scanning mechanism.

The beam management method provided in the embodiment of the present disclosure defines two sets of beam scanning mechanisms, Type 1 and Type 2, so that the beam to be used can be freely selected according to the changes in the scene. Type 1 is more suitable for beam switching. Type 2 is more suitable for scenarios with infrequent beam switching and less interference, such as highways and rural scenarios.

FIG. 7 is a flow chart of a beam management method provided by an embodiment of the present disclosure. As shown in FIG. 7 , an embodiment of the present disclosure provides a beam management method, which is applied to a network device, including:

Step 310, determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal;

Step 320: Send a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism.

Specifically, the network device may obtain the speed information of the first terminal and the second terminal by referring to the relevant technology, which will not be described in detail here.

For the introduction of various beam scanning mechanisms, please refer to the above and will not be repeated here.

The beam management method provided by the embodiment of the present disclosure determines a target beam scanning mechanism among multiple beam scanning mechanisms, and indicates the target beam scanning mechanism to the first terminal and the second terminal, so that the first terminal and the second terminal can adapt to multiple scenarios.

Optionally, determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal includes:

When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism;

When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

Optionally, the number of beam scans of the first type of beam scanning mechanism is greater than that of the second type of beam scanning mechanism. The number of beam scans of the beam scanning mechanism.

The beam management method provided in the disclosed embodiment defines two sets of beam scanning mechanisms, Type 1 and Type 2, to achieve free selection of the beam to be used according to changes in the scene. Type 1 is more suitable for scenarios with infrequent beam switching and greater interference, such as scenarios with dense terminal distribution such as city centers; Type 2 is more suitable for scenarios with frequent beam switching and less interference, such as highways and rural scenarios.

The present disclosure is introduced below in conjunction with a number of embodiments.

Embodiment 1: UE communicates using the beam used in the last communication

Before establishing a PC5-RRC connection with other UEs, the UE can use beam selection based on prior information: the UE uses the beam used for the last communication to communicate.

FIG8 is a second schematic diagram of terminal communication provided by an embodiment of the present disclosure. As shown in FIG8 , at time T1, UE1 and UE2 use the best beam pair for communication. At time T1, the best beam of UE1 is the second beam. After the communication ends at time T2, UE1 still selects the beam (the second beam) for communication, that is, at time T2, the best beam of UE1 is still the second beam. When UE2 moves back and forth at the maximum communication distance or the signal is interrupted by interference, the embodiment of the present disclosure can quickly restore the best beam communication.

Optionally, the second beam has a certain validity period t, such as 100 ms, and the scheme is abandoned a certain period of time after the last communication ends.

Optionally, the value of t may be configured by the UE itself. When this solution is not used, the UE may configure t to 0.

Embodiment 2: UE performs beam selection based on received SSB

Before establishing a PC5-RRC connection with other UEs, the UE can use beam selection based on prior information: the UE performs beam selection based on the received SSB.

Taking the NR-V2X scenario as an example, the UE needs to send synchronization signals SLSS and PSBCH. SLSS and PSBCH occupy one time slot, which is the S-SSB time slot. UE2 sends S-SSB and is received by UE1. After decoding, UE1 uses the beam in the corresponding direction to communicate. Correspondingly, UE1 sends S-SSB and is received by UE2. After decoding, UE2 uses the beam in the corresponding direction to communicate. The disclosed embodiment requires that UE1 and UE2 are in the same synchronization source.

FIG9 is a third terminal communication schematic diagram provided by an embodiment of the present disclosure. As shown in FIG9 , UE1 receives SSB2 broadcast by UE2, and after decoding, uses beam t1 in the corresponding direction to communicate.

Example 3: When the position of UE1 remains unchanged and the position of UE2 changes, both parties determine the beam for communication based on motion information

It should be understood that the motion information includes the second motion information corresponding to the first terminal and/or the first motion information corresponding to the second terminal.

In the V2X scenario, after resource reservation, resource listening, resource exclusion and resource selection, UE1 and UE2 establish a PC5-RRC connection before time T1. At time T1, UE2 sends its current position information, speed information and movement direction information to each other through the first signaling to UE1 and UE1 sends its current position information, speed information and movement direction information to each other through the second signaling to UE2.

FIG10 is one of the schematic diagrams of terminal position changes provided by the embodiment of the present disclosure, and the position changes of UE1 and UE2 are shown in FIG10. After time T1, the position of UE1 remains unchanged, and the position of UE2 changes. At time T2, the two calculate each other's position based on the data at time T1, and use the beam pair (t2, r4) to communicate with reference to the calculation result. FIG11 is the third schematic diagram of beam selection provided by the embodiment of the present disclosure, and the beam selection is shown in FIG11. At time T1, the beam pair (t4, r2) is selected, and at time T2, the two terminals select the beam pair (t2, r4).

Example 4: When the positions of UE1 and UE2 both change, both parties determine the beam for communication based on motion information

In the V2X scenario, after resource reservation, resource listening, resource exclusion and resource selection, UE1 and UE2 establish a PC5-RRC connection before time T1. At time T1, UE2 sends its own position, speed and direction information to each other in the form of first signaling to UE1 and second signaling to UE2.

FIG12 is a second schematic diagram of terminal position change provided by an embodiment of the present disclosure, and the position change of UE1 and UE2 is shown in FIG12. After time T1, the positions of UE1 and UE2 both change. At time T1, the two calculate each other's position at time T2 based on the data at time T1, and use the beam pair (t2, r6) to communicate at time T2 with reference to the calculation result. FIG13 is a fourth schematic diagram of beam selection provided by an embodiment of the present disclosure, and the beam selection is shown in FIG13. At time T1, the beam pair (r2, t6) is selected, and at time T2, the two terminals select the beam pair (t2, r6).

Example 5: When the speed of UE1 remains unchanged and the speed of UE2 changes, both parties determine the beam for communication based on the target beam scanning mechanism

FIG. 14 is a third schematic diagram of terminal position changes provided in an embodiment of the present disclosure, and the position changes of UE1 and UE2 are shown in FIG. 14 .

In the V2X scenario, UE1 and UE2 establish a PC5-RRC connection before time T1, and both are in motion. The speed of UE1 is always lower than the speed threshold set by the system (for example, 100 km/h), and is in a low-speed motion state; the speed of UE2 is lower than 100 km/h at time T1, and it starts to accelerate at this time, and the speed is higher than 100 km/h at time T2.

FIG15 is the fifth schematic diagram of beam selection provided by the embodiment of the present disclosure. As shown in FIG15, at time T1, the speeds of UE1 and UE2 are both lower than the speed threshold, so at time T1, the two terminals use narrow beams for communication, that is, both use the beam scanning mechanism corresponding to the narrow beam, and the best beam pair is selected (t6, r2). UE2 starts to accelerate at time T1, and adds beam scanning indication information to the third signaling sent to UE1, indicating that UE1 uses a wide beam for communication at time T2, and the best beam pair is selected (t1, r4).

Example 6: When the speeds of UE1 and UE2 both change, both parties determine the beam used for communication based on the target beam scanning mechanism

Figure 16 is the fourth schematic diagram of the terminal position change provided by the embodiment of the present disclosure. The position change of UE1 and UE2 is shown in Figure 16. In the V2X scenario, UE1 and UE2 establish a PC5-RRC connection before time T1, and both are in motion. At time T1, the speed of UE1 is higher than the speed threshold set by the system (for example, 100km/h), and it is in a high-speed motion state and starts to decelerate at this time. The speed of UE2 is lower than the speed threshold 100km/h, and it is in a low-speed motion state, and starts to accelerate at this time. UE1 instructs UE2 to use the beam scanning mechanism corresponding to the wide beam; at time T2, the speed of UE1 is lower than 100km/h, and it is in a low-speed motion state. The speed of UE2 is higher than 100km/h, and it is in a high-speed motion state. UE2 instructs UE1 to use the beam scanning mechanism corresponding to the wide beam.

Optionally, a terminal whose speed exceeds a speed threshold may instruct the opposite terminal to use a beam scanning mechanism corresponding to a wide beam.

For example, when the speed of the first terminal exceeds a speed threshold, the first terminal may instruct the second terminal to use a beam scanning mechanism corresponding to a wide beam; and/or

In a case where the speed of the second terminal exceeds the speed threshold, the second terminal may instruct the first terminal to use a beam scanning mechanism corresponding to the wide beam.

FIG17 is the sixth schematic diagram of beam selection provided by an embodiment of the present disclosure. As shown in FIG17, at time T1, the speed of UE1 is higher than the threshold and the speed of UE2 is lower than the threshold. UE1 instructs UE2 to use a wide beam for communication through a first signaling, and the best beam pair is selected (t3, r2). Starting from time T1, UE1 starts to decelerate and UE2 starts to accelerate. At time T2, the speed of UE1 is lower than the threshold and the speed of UE2 is higher than the threshold. UE2 instructs UE1 to use a wide beam for communication through RRC signaling, and the best beam pair is selected (t1, r4).

Example 7: Defining two beam scanning mechanisms, Type 1 and Type 2

Specifically, the disclosed embodiment defines two sets of beam scanning mechanisms, Type 1 and Type 2. Type 1 is used in common scenarios, and Type 2 is used in high-speed mobile scenarios. The two mechanisms have different numbers of beam scans, beam widths, and beam scanning resources.

A normal scene may refer to a scene where the speed is lower than the speed threshold; a high-speed moving scene may refer to a scene where the speed is higher than the speed threshold. It should be understood that the above are examples for the convenience of understanding the present disclosure, and the normal scene and the high-speed moving scene can be consistent with the Type 1 and Type 2 characteristics.

FIG18 is one of the schematic diagrams of the beam scanning mechanism provided by the embodiment of the present disclosure. As shown in FIG18 , as shown on the left side of the figure, the UE uses the Type 2 beam scanning mechanism, which has a small number of Type 2 beams, a wide beam width, high scanning efficiency, and low scanning accuracy. As shown on the right side of the figure, the UE uses the Type 1 beam scanning mechanism, which has a large number of Type 1 beams, a narrow beam width, low scanning efficiency, and high scanning accuracy. At the same time, the two use different CSI-RS resources, different time domain and frequency domain resources, where the CSI-RS resources depend on the beam selection, and the time and frequency domain resources can be selected by the UE independently.

After UE1 performs beam scanning, UE2 feeds back the measurement results to UE1. The feedback information includes CSI-RI or SSB-RI. After UE1 receives the feedback information, it selects the corresponding beam for transmission according to the indication information obtained by decoding.

Example 8: Using Type 1 and Type 2 beam scanning mechanisms with the same speed matching

FIG19 is a second schematic diagram of the beam scanning mechanism provided by an embodiment of the present disclosure. As shown in FIG19 , in the V2X scenario, the position of UE1 remains unchanged, the speed of UE2 is lower than the threshold at time T1, and higher than the threshold at time T2. At time T1, UE2 uses the Type 1 beam scanning mechanism. After UE1 receives multiple beams sent by UE2, it performs CSI measurement on all beams and feeds back the best beam (in the form of CRI or SSBRI). After UE2 receives the feedback information from UE1, it uses the best beam selected by UE1. Communicate (r2).

At time T2, since the speed of UE2 is higher than the threshold, UE2 selects Type 2 beam scanning mechanism. UE1 receives multiple beams sent by UE2 and performs measurements and feedback. After receiving the feedback information, UE2 uses the best beam selected by UE1 to communicate (r3).

Embodiment 9: The network device indicates the target beam scanning mechanism to the terminal through the third signaling

In the V2X scenario, there may be network devices such as a base station (BS) or a road side unit (RSU). At this time, the base station can send a third signaling to the UE to instruct its beam scanning mechanism.

FIG20 is a third schematic diagram of a beam scanning mechanism provided by an embodiment of the present disclosure. As shown in FIG20 , UE1 and UE2 are in the terminal autonomous resource selection mode (V2X), but there are network devices, such as base stations or roadside units, in the scenario. At this time, the network devices can send a third signaling to UE1 and UE2 respectively according to the actual scheduling situation to indicate the selection of the target beam scanning mechanism. For example, UE1 is in a highway scenario, so the BS instructs it to select the Type 2 beam scanning mechanism; UE2 is in a city scenario with large channel interference, so the BS instructs it to select the Type 1 beam scanning mechanism.

Embodiment 10: The third terminal uses the third signaling to indicate the target beam scanning mechanism to UE1 and UE2

The third terminal UE3 can replace the base station and send the third signaling to other UEs, instructing them to select Type 1 or Type 2 beam scanning mechanism as the target beam scanning mechanism.

FIG21 is a fourth schematic diagram of the beam scanning mechanism provided in an embodiment of the present disclosure. As shown in FIG21 , UE3 may send a third signaling to UE1 and UE2 respectively according to actual scheduling conditions to indicate the selection of the beam scanning mechanism.

The following is an introduction to the device provided by the embodiment of the present disclosure:

FIG. 22 is one of the structural schematic diagrams of the beam management device provided in an embodiment of the present disclosure. As shown in FIG. 22 , the beam management device provided in an embodiment of the present disclosure is applied to a first terminal, including:

A first information determining unit 410 is configured to determine first information, where the first information is indicated by the first device to the first terminal or the first information is existing information of the first terminal;

The first beam determining unit 420 is configured to determine a first beam based on the first information, where the first beam is used for the first terminal to communicate with the second terminal.

Optionally, when a PC5-RRC connection is not established with the second terminal, the first information is Prior information;

The prior information includes a second beam, where the second beam is a beam used by the first terminal and the second terminal during the last communication; and/or

The prior information includes a synchronization signal block SSB received and sent by the second terminal.

Optionally, when a PC5-RRC connection is established with the second terminal, the first information is first motion information corresponding to the second terminal at a current moment, and the first motion information is indicated by the second terminal to the first terminal through a first signaling.

Optionally, the first information is used to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms, and the plurality of beam scanning mechanisms have different beam widths;

The first beam determining unit 420, configured to determine a first beam based on the first information, includes:

The first beam determination unit 420 is configured to determine the target beam scanning mechanism based on the first information;

The first beam determining unit 420 is configured to determine the first beam through the target beam scanning mechanism.

Optionally, when the prior information is the second beam, the first beam determining unit 420, configured to determine the first beam based on the first information, includes:

The first beam determining unit 420 is configured to determine the second beam as the first beam.

Optionally, the first beam determining unit 420, configured to determine the first beam based on the first information when the prior information is the received SSB sent by the second terminal, includes:

A beam corresponding to the direction of the SSB is determined as the first beam.

Optionally, the effective time of the second beam is the first time.

Optionally, the first beam determining unit 420, configured to determine the first beam based on the first information, includes:

The first beam determination unit 420 is configured to determine a position of the second terminal at a next moment based on the first motion information corresponding to the second terminal at the current moment;

The first beam determining unit 420 is configured to determine the first beam based on the next moment position of the second terminal.

Optionally, the first motion information corresponding to the second terminal includes at least one of the following:

location information corresponding to the second terminal;

speed information corresponding to the second terminal;

The movement direction information corresponding to the second terminal.

Optionally, the device further comprises:

The first sending unit is used to send a second signaling to the second terminal, where the second signaling is used to indicate second motion information corresponding to the first terminal at a current moment, where the second motion information is used by the second terminal to determine a third beam, and the third beam is used by the second terminal to communicate with the first terminal.

Optionally, the second motion information corresponding to the first terminal includes at least one of the following:

location information corresponding to the first terminal;

speed information corresponding to the first terminal;

The movement direction information corresponding to the first terminal.

Optionally, the first information includes:

Speed information corresponding to the first terminal; and/or

The beam scanning indication information is used to indicate the target beam scanning mechanism, where the beam scanning indication information is sent by the first device to the first terminal through third signaling.

Optionally, when the first information is speed information corresponding to the first terminal, the first beam determination unit 420 is configured to determine a target beam scanning mechanism based on the first information, including:

The first beam determination unit 420 is configured to use a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism when a speed corresponding to the first terminal exceeds a speed threshold;

The first beam determining unit 420 is configured to use a beam scanning mechanism corresponding to a narrow beam as the target beam scanning mechanism when a speed corresponding to the first terminal does not exceed a speed threshold.

Optionally, the first beam determination unit 420 is also used to use the beam scanning mechanism with a wider beam width between the beam scanning mechanism determined by the first terminal and the beam scanning mechanism determined by the second terminal as the target beam scanning mechanism when the beam scanning mechanism determined by the first terminal is different from the beam scanning mechanism determined by the second terminal.

Optionally, the first sending unit is further used to send a fourth signaling to the second terminal, and the fourth signaling is used to indicate the target beam scanning mechanism.

Optionally, the first sending unit, configured to send the fourth signaling to the second terminal, includes:

The first sending unit is used to send the fourth signaling to the second terminal after the speed state corresponding to the first terminal is maintained for a second time.

Optionally, the first device is any one of the following:

the second terminal;

Network equipment;

A third terminal, wherein the third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

The methods and devices provided in each embodiment of the present disclosure are based on the same application concept. Since the beam management method applied to the first terminal and the beam management device applied to the first terminal solve the problem in a similar manner and can achieve the same technical effect, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

FIG. 23 is a second structural diagram of a beam management device provided in an embodiment of the present disclosure. As shown in FIG. 23 , the beam management device provided in an embodiment of the present disclosure is applied to a third terminal, including:

A second mechanism determination unit 510 is configured to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms according to speed information of the first terminal and the second terminal;

A second sending unit 520 is used to send a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism;

The third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

Optionally, the second mechanism determining unit 510 is configured to determine the speed of the first terminal and the second terminal according to the speed of the first terminal and the second terminal. The beam scanning mechanism includes:

The second mechanism determination unit 510 is configured to use the beam scanning mechanism corresponding to the wide beam as the target beam scanning mechanism when a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold;

The second mechanism determination unit 510 is configured to use a beam scanning mechanism corresponding to a narrow beam as the target beam scanning mechanism when the speeds corresponding to the first terminal and the second terminal do not exceed a speed threshold.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

The methods and devices provided in each embodiment of the present disclosure are based on the same application concept. Since the beam management method applied to the third terminal and the beam management device applied to the third terminal solve the problem in a similar manner and can achieve the same technical effect, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

FIG. 24 is a third structural diagram of a beam management device provided in an embodiment of the present disclosure. As shown in FIG. 24 , the beam management device provided in an embodiment of the present disclosure is applied to a network device, including:

A third mechanism determination unit 610 is configured to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms according to speed information of the first terminal and the second terminal;

The third sending unit 620 is used to send a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism.

Optionally, the third mechanism determining unit 610, configured to determine the beam scanning mechanism according to the speed information of the first terminal and the second terminal, includes:

The third mechanism determination unit 610 is configured to, when a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, use a beam scanning mechanism corresponding to a wide beam as the Describe the target beam scanning mechanism;

The third mechanism determination unit 610 is configured to use the beam scanning mechanism corresponding to the narrow beam as the target beam scanning mechanism when the speeds corresponding to the first terminal and the second terminal do not exceed a speed threshold.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

The methods and devices provided in each embodiment of the present disclosure are based on the same application concept. Since the beam management method applied to a network device and the beam management device applied to a network device solve problems in a similar manner and can achieve the same technical effect, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

It should be noted that the division of units in the embodiments of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic Various media that can store program codes, such as disks or optical disks.

FIG25 is a schematic diagram of the structure of a first terminal provided in an embodiment of the present disclosure. As shown in FIG25 , the first terminal includes a memory 2520, a transceiver 2500, and a processor 2510; wherein the processor 2510 and the memory 2520 may also be arranged physically separately.

The memory 2520 is used to store a computer program; the transceiver 2500 is used to send and receive data under the control of the processor 2510; the processor 2510 calls the computer program stored in the memory 2520 to perform operations corresponding to any of the beam management methods applied to the first terminal provided in the embodiments of the present disclosure according to the obtained executable instructions, for example:

Determine first information, where the first information is indicated by a first device to the first terminal or the first information is existing information of the first terminal;

A first beam is determined based on the first information, where the first beam is used for communication between the first terminal and the second terminal.

Specifically, the transceiver 2500 is used to receive and send data under the control of the processor 2510.

Among them, in Figure 25, the bus interface 2540 may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 2510 and various circuits of the memory represented by the memory 2520 are connected together. The bus interface 2540 can also connect various other circuits such as peripheral devices, voltage regulators and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 2500 may be a plurality of components, namely, a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium, and these transmission media include transmission media such as wireless channels, wired channels, and optical cables. For different first terminals, a user interface 2530 may also be included, and the user interface 2530 may also be an interface capable of externally connecting to required internal devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 2510 is responsible for managing the bus architecture and general processing, and the memory 2520 can store data used by the processor 2510 when performing operations.

Optionally, the processor 2510 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). Programmable logic devices), the processor can also adopt a multi-core architecture.

Optionally, the operation further includes:

In a case where a PC5-RRC connection is not established with the second terminal, the first information is a priori information;

The prior information includes a second beam, where the second beam is a beam used by the first terminal and the second terminal during the last communication; and/or

The prior information includes a synchronization signal block SSB received and sent by the second terminal.

Optionally, the operation further includes:

In the case of establishing a PC5-RRC connection with the second terminal, the first information is the first motion information corresponding to the second terminal at the current moment, and the first motion information is indicated by the second terminal to the first terminal through the first signaling.

Optionally, the first information is used to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms, and the plurality of beam scanning mechanisms have different beam widths;

The determining the first beam based on the first information includes:

determining the target beam scanning mechanism based on the first information;

The first beam is determined by the target beam scanning mechanism.

Optionally, when the priori information is the second beam, determining the first beam based on the first information includes:

determining the second beam as the first beam;

Or when the prior information is the received SSB sent by the second terminal, determining the first beam based on the first information includes:

A beam corresponding to the direction of the SSB is determined as the first beam.

Optionally, the effective time of the second beam is the first time.

Optionally, determining the first beam based on the first information includes:

Determine the next moment position of the second terminal based on the first motion information corresponding to the second terminal at the current moment;

The first beam is determined based on the next moment position of the second terminal.

Optionally, the first motion information corresponding to the second terminal includes at least one of the following:

location information corresponding to the second terminal;

speed information corresponding to the second terminal;

The movement direction information corresponding to the second terminal.

Optionally, the operation further includes:

A second signaling is sent to the second terminal, where the second signaling is used to indicate second motion information corresponding to the first terminal at a current moment, where the second motion information is used by the second terminal to determine a third beam, where the third beam is used for the second terminal to communicate with the first terminal. Optionally, the second motion information corresponding to the first terminal includes at least one of the following:

location information corresponding to the first terminal;

speed information corresponding to the first terminal;

The movement direction information corresponding to the first terminal.

Optionally, the first information includes:

Speed information corresponding to the first terminal; and/or

The beam scanning indication information is used to indicate the target beam scanning mechanism, where the beam scanning indication information is sent by the first device to the first terminal through third signaling.

Optionally, when the first information is speed information corresponding to the first terminal, determining a target beam scanning mechanism based on the first information includes:

When the speed corresponding to the first terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism;

When the speed corresponding to the first terminal does not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism.

Optionally, the operation further includes:

When the beam scanning mechanism determined by the first terminal is different from the beam scanning mechanism determined by the second terminal, the beam scanning mechanism with a wider beam width between the beam scanning mechanism determined by the first terminal and the beam scanning mechanism determined by the second terminal is used as the target beam scanning mechanism.

Optionally, the operation further includes:

A fourth signaling is sent to the second terminal, where the fourth signaling is used to indicate the target beam scanning mechanism.

Optionally, the sending a fourth signaling to the second terminal includes:

After the speed state corresponding to the first terminal is maintained for a second time, the fourth signaling is sent to the second terminal.

Optionally, the first device is any one of the following:

the second terminal;

Network equipment;

A third terminal, wherein the third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

It should be noted here that the above-mentioned first terminal provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned beam management method embodiment applied to the first terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

FIG26 is a schematic diagram of the structure of the third terminal provided in an embodiment of the present disclosure. As shown in FIG26 , the third terminal includes a memory 2620, a transceiver 2600, and a processor 2610; wherein the processor 2610 and the memory 2620 may also be arranged physically separately.

The memory 2620 is used to store a computer program; the transceiver 2600 is used to send and receive data under the control of the processor 2610; the processor 2610 calls the computer program stored in the memory 2620 to perform operations corresponding to any of the beam management methods applied to the third terminal provided in the embodiments of the present disclosure according to the obtained executable instructions, for example:

Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal;

Send a third signaling to the first terminal and the second terminal respectively, the third signaling is used to indicate showing the target beam scanning mechanism;

The third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

Specifically, the transceiver 2600 is used to receive and send data under the control of the processor 2610.

Among them, in Figure 26, the bus interface 2640 may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 2610 and various circuits of the memory represented by the memory 2620 are connected together. The bus interface 2640 can also connect various other circuits such as peripheral devices, voltage regulators and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 2600 may be a plurality of components, namely, a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium, and these transmission media include transmission media such as wireless channels, wired channels, and optical cables. For different third terminals, a user interface 2630 may also be included, and the user interface 2630 may also be an interface capable of externally connecting or internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 2610 is responsible for managing the bus architecture and general processing, and the memory 2620 can store data used by the processor 2610 when performing operations.

Optionally, processor 2610 can be a CPU (central processing unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

Optionally, determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal includes:

When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism;

When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

It should be noted here that the above-mentioned third terminal provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned beam management method embodiment applied to the third terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

FIG. 27 is a schematic diagram of the structure of a network device provided in an embodiment of the present disclosure. As shown in FIG. 27 , the network device includes a memory 2720, a transceiver 2700, and a processor 2710, wherein:

The memory 2720 is used to store computer programs; the transceiver 2700 is used to send and receive data under the control of the processor 2710; the processor 2710 is used to read the computer program in the memory 2720 and perform the following operations:

Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal;

A third signaling is sent to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism.

Specifically, the transceiver 2700 is used to receive and send data under the control of the processor 2710.

In FIG. 27 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 2710 and various circuits of memory represented by memory 2720 connected together. The bus architecture may also connect various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface 2730 provides an interface. The transceiver 2700 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium includes a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 2710 is responsible for managing the bus architecture and general processing, and the memory 2720 may store data used by the processor 2710 when performing operations.

Processor 2710 can be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

It should be noted here that the above-mentioned network device provided by the embodiment of the present disclosure can implement all the method steps implemented by the above-mentioned beam management method embodiment applied to the network device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

Optionally, determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal includes:

When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism;

When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism.

Optionally, the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism;

The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism.

Optionally, the first type of beam scanning mechanism and the second type of beam scanning mechanism have different numbers of beam scanning; and/or

The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different.

On the other hand, an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the beam management method applied to the first terminal provided in the above embodiments, including:

Determine first information, where the first information is indicated by a first device to the first terminal or the first information is existing information of the first terminal;

A first beam is determined based on the first information, where the first beam is used for communication between the first terminal and the second terminal.

On the other hand, an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the beam management method applied to the third terminal provided in the above embodiments, including:

Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal;

Sending a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism;

The third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively.

On the other hand, an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the beam management method applied to the network device provided in the above embodiments, including:

Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal;

A third signaling is sent to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

The present disclosure is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that the flowcharts can be implemented by computer executable instructions. Each process and/or box in the flowchart and/or block diagram, and the combination of the processes and/or boxes in the flowchart and/or block diagram. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate a device for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more flows in the flowchart and/or one or more blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.

Claims (81)

A beam management method, applied to a first terminal, comprising: Determine first information, where the first information is indicated by a first device to the first terminal or the first information is existing information of the first terminal; A first beam is determined based on the first information, where the first beam is used for the first terminal to communicate with a second terminal. The beam management method according to claim 1, wherein the method further comprises: In a case where a PC5-RRC connection is not established with the second terminal, the first information is a priori information; The prior information includes a second beam, where the second beam is a beam used by the first terminal and the second terminal during the last communication; and/or The prior information includes a synchronization signal block SSB received and sent by the second terminal. The beam management method according to claim 1, wherein the method further comprises: In the case of establishing a PC5-RRC connection with the second terminal, the first information is the first motion information corresponding to the second terminal at the current moment, and the first motion information is indicated by the second terminal to the first terminal through the first signaling. The beam management method according to claim 1, wherein the first information is used to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms, the plurality of beam scanning mechanisms having different beam widths; The determining the first beam based on the first information includes: determining the target beam scanning mechanism based on the first information; The first beam is determined by the target beam scanning mechanism. The beam management method according to claim 2, wherein, when the prior information is the second beam, determining the first beam based on the first information comprises: determining the second beam as the first beam; Or when the prior information is the received SSB sent by the second terminal, determining the first beam based on the first information includes: A beam corresponding to the direction of the SSB is determined as the first beam. The beam management method according to claim 2 or 5, wherein the effective time of the second beam is the first time. The beam management method according to claim 3, wherein determining the first beam based on the first information comprises: Determine the next moment position of the second terminal based on the first motion information corresponding to the second terminal at the current moment; The first beam is determined based on the next moment position of the second terminal. The beam management method according to claim 3 or 7, wherein the first motion information corresponding to the second terminal includes at least one of the following: location information corresponding to the second terminal; speed information corresponding to the second terminal; The movement direction information corresponding to the second terminal. The beam management method according to claim 3 or 7, wherein the method further comprises: A second signaling is sent to the second terminal, where the second signaling is used to indicate second motion information corresponding to the first terminal at the current moment, where the second motion information is used by the second terminal to determine a third beam, and where the third beam is used by the second terminal to communicate with the first terminal. The beam management method according to claim 9, wherein the second motion information corresponding to the first terminal includes at least one of the following: location information corresponding to the first terminal; speed information corresponding to the first terminal; The movement direction information corresponding to the first terminal. The beam management method according to claim 4, wherein the first information comprises: Speed information corresponding to the first terminal; and/or The beam scanning indication information is used to indicate the target beam scanning mechanism, where the beam scanning indication information is sent by the first device to the first terminal through third signaling. The beam management method according to claim 11, wherein, when the first information is speed information corresponding to the first terminal, the determining the target beam scanning mechanism based on the first information comprises: When the speed corresponding to the first terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism; When the speed corresponding to the first terminal does not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism. The beam management method according to claim 12, wherein the method further comprises: When the beam scanning mechanism determined by the first terminal is different from the beam scanning mechanism determined by the second terminal, the beam scanning mechanism with a wider beam width between the beam scanning mechanism determined by the first terminal and the beam scanning mechanism determined by the second terminal is used as the target beam scanning mechanism. The beam management method according to claim 13, wherein the method further comprises: A fourth signaling is sent to the second terminal, where the fourth signaling is used to indicate the target beam scanning mechanism. The beam management method according to claim 14, wherein the sending the fourth signaling to the second terminal comprises: After the speed state corresponding to the first terminal is maintained for a second time, the fourth signaling is sent to the second terminal. The beam management method according to claim 11, wherein the first device is any one of the following: the second terminal; Network equipment; A third terminal, wherein the third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively. The beam management method according to any one of claims 4 and 11-16, wherein the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism; The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism. The beam management method according to claim 17, wherein the number of beam scans of the first type of beam scanning mechanism is different from that of the second type of beam scanning mechanism; and/or The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different. A beam management method, applied to a third terminal, comprising: Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal; Sending a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism; The third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively. The beam management method according to claim 19, wherein determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal comprises: When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism; When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism. The beam management method according to claim 19 or 20, wherein the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism; The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism. The beam management method according to claim 21, wherein the number of beam scans of the first type of beam scanning mechanism is different from that of the second type of beam scanning mechanism; and/or The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different. A beam management method, applied to a network device, comprising: Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal; A third signaling is sent to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism. The beam management method according to claim 23, wherein determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal comprises: When the speed corresponding to one of the first terminal and the second terminal exceeds the speed threshold, In this case, the beam scanning mechanism corresponding to the wide beam is used as the target beam scanning mechanism; When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism. The beam management method according to claim 23 or 24, wherein the multiple beam scanning mechanisms include: a first type beam scanning mechanism and a second type beam scanning mechanism; The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism. The beam management method according to claim 25, wherein the number of beam scans of the first type of beam scanning mechanism is different from that of the second type of beam scanning mechanism; and/or The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different. A first terminal includes a memory, a transceiver, and a processor: The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Determine first information, where the first information is indicated by a first device to the first terminal or the first information is existing information of the first terminal; A first beam is determined based on the first information, where the first beam is used for the first terminal to communicate with a second terminal. The first terminal according to claim 27, wherein the operation further comprises: In a case where a PC5-RRC connection is not established with the second terminal, the first information is a priori information; The prior information includes a second beam, where the second beam is a beam used by the first terminal and the second terminal during the last communication; and/or The prior information includes a synchronization signal block SSB received and sent by the second terminal. The first terminal according to claim 27, wherein the operation further comprises: In the case of establishing a PC5-RRC connection with the second terminal, the first information is the first motion information corresponding to the second terminal at the current moment, and the first motion information is indicated by the second terminal to the first terminal through the first signaling. The first terminal according to claim 27, wherein the first information is used in a plurality of Determining a target beam scanning mechanism among the beam scanning mechanisms, wherein the beam widths of the multiple beam scanning mechanisms are different; The determining the first beam based on the first information includes: determining the target beam scanning mechanism based on the first information; The first beam is determined by the target beam scanning mechanism. The first terminal according to claim 28, wherein: In a case where the priori information is the second beam, determining the first beam based on the first information includes: determining the second beam as the first beam; Or when the prior information is the received SSB sent by the second terminal, determining the first beam based on the first information includes: A beam corresponding to the direction of the SSB is determined as the first beam. The first terminal according to claim 28 or 31, wherein the effective time of the second beam is the first time. The first terminal according to claim 29, wherein the determining the first beam based on the first information comprises: Determine the next moment position of the second terminal based on the first motion information corresponding to the second terminal at the current moment; The first beam is determined based on the next moment position of the second terminal. The first terminal according to claim 29 or 33, wherein the first motion information corresponding to the second terminal includes at least one of the following: location information corresponding to the second terminal; speed information corresponding to the second terminal; The movement direction information corresponding to the second terminal. The first terminal according to claim 30 or 33, wherein the operation further comprises: A second signaling is sent to the second terminal, where the second signaling is used to indicate second motion information corresponding to the first terminal at the current moment, where the second motion information is used by the second terminal to determine a third beam, and where the third beam is used by the second terminal to communicate with the first terminal. The first terminal according to claim 35, wherein the second motion information corresponding to the first terminal includes at least one of the following: location information corresponding to the first terminal; speed information corresponding to the first terminal; The movement direction information corresponding to the first terminal. The first terminal according to claim 30, wherein the first information comprises: Speed information corresponding to the first terminal; and/or The beam scanning indication information is used to indicate the target beam scanning mechanism, where the beam scanning indication information is sent by the first device to the first terminal through third signaling. The first terminal according to claim 37, wherein, when the first information is speed information corresponding to the first terminal, the determining the target beam scanning mechanism based on the first information comprises: When the speed corresponding to the first terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism; When the speed corresponding to the first terminal does not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism. The first terminal according to claim 38, wherein the operation further comprises: When the beam scanning mechanism determined by the first terminal is different from the beam scanning mechanism determined by the second terminal, the beam scanning mechanism with a wider beam width between the beam scanning mechanism determined by the first terminal and the beam scanning mechanism determined by the second terminal is used as the target beam scanning mechanism. The first terminal according to claim 39, wherein the operation further comprises: A fourth signaling is sent to the second terminal, where the fourth signaling is used to indicate the target beam scanning mechanism. The first terminal according to claim 40, wherein the sending the fourth signaling to the second terminal comprises: After the speed state corresponding to the first terminal is maintained for a second time, the fourth signaling is sent to the second terminal. The first terminal according to claim 37, wherein the first device is any one of the following: the second terminal; Network equipment; A third terminal, wherein the third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively. The first terminal according to any one of claims 30, 37-42, wherein the multiple beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism; The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism. The first terminal according to claim 43, wherein the number of beam scans of the first type of beam scanning mechanism is different from that of the second type of beam scanning mechanism; and/or The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different. A third terminal includes a memory, a transceiver, and a processor: The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal; Sending a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism; The third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively. The third terminal according to claim 45, wherein the determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal comprises: When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism; When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism. The third terminal according to claim 45 or 46, wherein the plurality of beam scanning machines The system includes: a first type beam scanning mechanism and a second type beam scanning mechanism; The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism. The third terminal according to claim 47, wherein the number of beam scans of the first type of beam scanning mechanism is different from that of the second type of beam scanning mechanism; and/or The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different. A network device, comprising a memory, a transceiver and a processor: The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Determining a target beam scanning mechanism among multiple beam scanning mechanisms according to speed information of the first terminal and the second terminal; A third signaling is sent to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism. The network device according to claim 49, wherein determining the beam scanning mechanism according to the speed information of the first terminal and the second terminal comprises: When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism; When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism. The network device according to claim 49 or 50, wherein the plurality of beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism; The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism. The network device according to claim 51, wherein the number of beam scans of the first type of beam scanning mechanism is different from that of the second type of beam scanning mechanism; and/or The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different. A beam management device, applied to a first terminal, comprising: A first information determining unit, configured to determine first information, where the first information is indicated by the first device to the first terminal or the first information is existing information of the first terminal; The first beam determining unit is configured to determine a first beam based on the first information, where the first beam is used for the first terminal to communicate with a second terminal. The beam management device according to claim 53, wherein: In a case where a PC5-RRC connection is not established with the second terminal, the first information is a priori information; The prior information includes a second beam, where the second beam is a beam used by the first terminal and the second terminal during the last communication; and/or The prior information includes a synchronization signal block SSB received and sent by the second terminal. The beam management device according to claim 53, wherein: In the case of establishing a PC5-RRC connection with the second terminal, the first information is the first motion information corresponding to the second terminal at the current moment, and the first motion information is indicated by the second terminal to the first terminal through the first signaling. The beam management device according to claim 53, wherein the first information is used to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms, the plurality of beam scanning mechanisms having different beam widths; The first beam determination unit is specifically configured to determine the target beam scanning mechanism based on the first information; and determine the first beam through the target beam scanning mechanism. The beam management device according to claim 54, wherein, when the prior information is the second beam, the first beam determination unit is specifically configured to: determining the second beam as the first beam; Or when the prior information is the received SSB sent by the second terminal, determining the first beam based on the first information includes: A beam corresponding to the direction of the SSB is determined as the first beam. The beam management device according to claim 54 or 57, wherein the effective time of the second beam is the first time. The beam management device according to claim 55, wherein the first beam determination unit is specifically configured to: Determine the next moment position of the second terminal based on the first motion information corresponding to the second terminal at the current moment; The first beam is determined based on the next moment position of the second terminal. The beam management device according to claim 55 or 59, wherein the first motion information corresponding to the second terminal includes at least one of the following: location information corresponding to the second terminal; speed information corresponding to the second terminal; The movement direction information corresponding to the second terminal. The beam management device according to claim 55 or 59, wherein the device further comprises a first sending unit, configured to: A second signaling is sent to the second terminal, where the second signaling is used to indicate second motion information corresponding to the first terminal at the current moment, where the second motion information is used by the second terminal to determine a third beam, and where the third beam is used by the second terminal to communicate with the first terminal. The beam management device according to claim 61, wherein the second motion information corresponding to the first terminal includes at least one of the following: location information corresponding to the first terminal; speed information corresponding to the first terminal; The movement direction information corresponding to the first terminal. The beam management device according to claim 56, wherein the first information comprises: Speed information corresponding to the first terminal; and/or The beam scanning indication information is used to indicate the target beam scanning mechanism, where the beam scanning indication information is sent by the first device to the first terminal through third signaling. The beam management device according to claim 63, wherein, when the first information is speed information corresponding to the first terminal, the first beam determination unit is specifically configured to: When the speed corresponding to the first terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism; When the speed corresponding to the first terminal does not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism. The beam management device according to claim 64, wherein the first beam determination unit is further configured to: When the beam scanning mechanism determined by the first terminal is different from the beam scanning mechanism determined by the second terminal, the beam scanning mechanism with a wider beam width between the beam scanning mechanism determined by the first terminal and the beam scanning mechanism determined by the second terminal is used as the target beam scanning mechanism. The beam management device according to claim 65, wherein the first transmitting unit is further configured to: A fourth signaling is sent to the second terminal, where the fourth signaling is used to indicate the target beam scanning mechanism. The beam management device according to claim 66, wherein the first sending unit is specifically configured to: After the speed state corresponding to the first terminal is maintained for a second time, the fourth signaling is sent to the second terminal. The beam management apparatus according to claim 63, wherein the first device is any one of the following: the second terminal; Network equipment; A third terminal, wherein the third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively. The beam management device according to any one of claims 56, 63-68, wherein the plurality of beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism; The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism. The beam management device according to claim 69, wherein the number of beam scans of the first type of beam scanning mechanism is different from the number of beam scans of the second type of beam scanning mechanism; and/or The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different. A beam management device, applied to a third terminal, comprising: The second mechanism determination unit is used to determine the speed of the first terminal and the second terminal in a plurality of waves according to the speed information of the first terminal and the second terminal. In the beam scanning mechanism, determining the target beam scanning mechanism; A second sending unit, configured to send a third signaling to the first terminal and the second terminal respectively, where the third signaling is used to indicate the target beam scanning mechanism; The third terminal establishes a PC5-RRC connection with the first terminal and the second terminal respectively. The beam management device according to claim 71, wherein the second mechanism determination unit is specifically configured to: When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism; When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, the beam scanning mechanism corresponding to the narrow beam is used as the target beam scanning mechanism. The beam management device according to claim 71 or 72, wherein the plurality of beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism; The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism. The beam management device according to claim 73, wherein the number of beam scans of the first type of beam scanning mechanism is different from the number of beam scans of the second type of beam scanning mechanism; and/or The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different. A beam management device, applied to a network device, comprising: A third mechanism determination unit, configured to determine a target beam scanning mechanism among a plurality of beam scanning mechanisms according to speed information of the first terminal and the second terminal; The third sending unit is used to send a third signaling to the first terminal and the second terminal respectively, and the third signaling is used to indicate the target beam scanning mechanism. The beam management device according to claim 75, wherein the third mechanism determination unit is specifically configured to: When a speed corresponding to one of the first terminal and the second terminal exceeds a speed threshold, using a beam scanning mechanism corresponding to a wide beam as the target beam scanning mechanism; When the speeds corresponding to the first terminal and the second terminal do not exceed the speed threshold, A beam scanning mechanism corresponding to a narrow beam is used as the target beam scanning mechanism. The beam management device according to claim 75 or 76, wherein the plurality of beam scanning mechanisms include: a first type of beam scanning mechanism and a second type of beam scanning mechanism; The beam width of the first type beam scanning mechanism is narrower than that of the second type beam scanning mechanism. The beam management device according to claim 77, wherein the number of beam scans of the first type of beam scanning mechanism is different from the number of beam scans of the second type of beam scanning mechanism; and/or The beam scanning resources of the first type beam scanning mechanism and the second type beam scanning mechanism are different. A processor-readable storage medium storing a computer program, wherein the computer program is used to enable the processor to execute the beam management method according to any one of claims 1 to 18. A processor-readable storage medium storing a computer program, wherein the computer program is used to enable the processor to execute the beam management method according to any one of claims 19 to 22. A processor-readable storage medium storing a computer program, wherein the computer program is used to enable the processor to execute the beam management method according to any one of claims 23 to 26.