WO2024208110A1 - Communication method and apparatus - Google Patents

Abstract

Provided are a communication method and apparatus, which relate to the technical field of communications. The method comprises: a first terminal device transmitting first spatial information of a first transmitting beam to a communication device, such that the communication device can indicate, to the first terminal device according to the first spatial information, a first resource corresponding to the first transmitting beam, wherein the first resource can be used for the first terminal device to perform SL communication with a second terminal device. This indicates that a communication device can allocate, in view of spatial information of a first transmitting beam used when a first terminal device performs SL communication, to the first terminal device a first resource for performing SL communication, such that the problem of the resource utilization rate being low caused by a communication device still allocating different resources when transmitting beams of different terminal devices do not overlap can be alleviated.

Description

A communication method and device

This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office of China on April 4, 2023, with application number 202310382709.1, and the priority of the Chinese patent application with the invention name “A communication method and device”, all contents of which are incorporated by reference in this application.

Technical Field

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

Background Art

Generally speaking, in a sidelink (SL) communication scenario, a base station can allocate resources for SL communication to a terminal device, or the terminal device can obtain resources for SL communication through autonomous competition. However, such a resource acquisition method may have the problem of low resource utilization.

Summary of the invention

The present application provides a communication method and device, which can improve resource utilization.

In a first aspect, a communication method is provided, which is applied to a first terminal device, and the method includes: determining first spatial information of a first transmitting beam; sending the first spatial information of the first transmitting beam to a communication device; receiving first indication information from the communication device, the first indication information being used to indicate a first resource corresponding to the first transmitting beam, and the first resource being used for SL communication between the first terminal device and the second terminal device.

In the above embodiment, the first terminal device can send the first spatial information of the first transmission beam to the communication device, so that the communication device can indicate the first resource corresponding to the first transmission beam to the first terminal device based on the first spatial information, and the first resource can be used for the first terminal device to perform SL communication with the second terminal device. This indicates that the communication device can allocate the first resource for SL communication to the first terminal device in combination with the spatial information of the first transmission beam used by the first terminal device for SL communication. This can reduce the problem of low resource utilization caused by the communication device still allocating different resources when the transmission beams of different terminal devices do not overlap.

The first spatial information of the first transmission beam can be used to indicate the angle information of the direction of the first transmission beam relative to the reference directions indicated by one or more reference direction information in the second spatial information. It can also be understood that the first spatial information of the first transmission beam can be used to determine the direction of the first transmission beam.

It should be pointed out that, in the present application, a certain indication information may be indicated by one or more fields or the bit value corresponding to the field, etc. when indicating the corresponding information. Exemplarily, when the first indication information indicates the first resource corresponding to the first transmit beam, it may be indicated by one or more fields, or, by the bit value corresponding to a field. If the bit value corresponding to the field is 1, it indicates the first resource. Also exemplarily, when the second indication information indicates the first reference direction information, it may indicate the first reference direction information by a field, or, when the bit value corresponding to the field is 1, it indicates the first reference direction information. Also exemplarily, when the second indication information indicates the first reference direction information and the second reference direction information, it may indicate the first reference direction information and the second reference direction information by a field; or, one field indicates the first reference direction information, and another field indicates the second reference direction information; or, when the bit value corresponding to a field is 1, it indicates the first reference direction information, and when the bit value corresponding to the field is 0, it indicates the second reference direction information, etc., which are not limited here.

In combination with the first aspect, in a possible implementation, determining the first spatial information of the first transmit beam includes: determining the first spatial information of the first transmit beam according to the second spatial information. The second spatial information may include one or more reference direction information. For example, the second spatial information may include first reference direction information and second reference direction information. Optionally, different reference directions indicated by multiple reference direction information in the second spatial information are not parallel, such as the first reference direction indicated by the first reference direction information and the second reference direction indicated by the second reference direction information are not parallel. In one implementation, the first reference direction is perpendicular to the ground, such as vertically upward or vertically downward; the second reference direction is parallel to the ground, such as horizontally north, horizontally south, horizontally east or horizontally west. In another implementation, the first reference direction is parallel to the ground, such as horizontally north, horizontally south, horizontally east or horizontally west; the second reference direction is perpendicular to the ground, such as vertically upward or vertically downward. The present application does not limit the specific direction of the reference direction (such as the first reference direction or the second reference direction). It should be noted that the direction parallel to the ground (such as the first reference direction or the second reference direction, etc.) can be determined according to a navigation device and/or a global navigation satellite system (GNSS). Optionally, the navigation device can be a compass, and the GNSS can be a global positioning system (GPS) or a BeiDou system.

In the above embodiment, the first terminal device can determine the first spatial information of the first transmitting beam, such as the direction of the first transmitting beam, through the non-parallel reference directions indicated by different reference direction information in the second spatial information, so that the direction of the first transmitting beam in the three-dimensional space can be accurately determined.

In a possible implementation, the method further includes: receiving second indication information from the communication device, where the second indication information is used to indicate one or more reference direction information in the second spatial information.

In the above embodiment, the first terminal device can receive the second indication information from the communication device, and the second indication information is used to indicate one or more reference direction information in the second spatial information, which makes the first terminal device's understanding of the second spatial information consistent with that of the communication device, and also enables the communication device to correctly interpret the first spatial information determined based on the second spatial information.

In a possible implementation, the second indication information is used to indicate one or more reference direction information in the second spatial information, including: the second indication information is used to indicate information of at least one reference transmit beam; wherein the information of at least one reference transmit beam is used to determine one or more reference direction information in the second spatial information. Optionally, the information of the reference transmit beam can be used to uniquely identify the reference transmit beam, for example, it can be an index value, an identifier or a number, etc.

In the above embodiment, the first terminal device can receive second indication information from the communication device, and the second indication information is used to indicate information of at least one reference transmit beam, and the information of at least one reference transmit beam is used to determine one or more reference direction information in the second spatial information, which makes the first terminal device's understanding of the second spatial information consistent with that of the communication device, and also enables the communication device to correctly interpret the first spatial information determined based on the second spatial information.

In a possible implementation, the method further includes: sending a first request message to the communication device, where the first request message is used to request one or more reference direction information in the second spatial information.

In the above embodiment, the first terminal device can actively request the communication device for the second spatial information, so that the first terminal device's understanding of the second spatial information is consistent with that of the communication device, and the communication device can correctly interpret the first spatial information determined based on the second spatial information.

In a possible implementation, the method further includes: determining one or more reference direction information in the second spatial information according to the direction of at least one receiving beam, wherein the at least one receiving beam is a receiving beam used by the first terminal device to receive information from the communication device.

In the above embodiment, the first terminal device can determine one or more reference direction information according to the direction of at least one receiving beam, and at least one receiving beam is a receiving beam used by the first terminal device to receive information from the communication device. In this way, the communication device's understanding of the second spatial information can be consistent with that of the first terminal device, and the communication device can also correctly interpret the first spatial information determined based on the second spatial information.

In a possible implementation manner, the first spatial information of the first transmission beam further includes at least one of the following: identification information of the first transmission beam and width information of the first transmission beam.

In the above embodiment, the communication device can be enabled to obtain the identification information of the first transmission beam and/or the width information of the first transmission beam. When the communication device obtains the width information of the first transmission beam, it can help the communication device determine the radiation range of the first transmission beam, thereby reducing the interference problem caused by the communication device allocating the same resources when the radiation ranges of the transmission beams of different terminal devices overlap.

Among them, the identification information of the first transmission beam can be used to uniquely identify the first transmission beam. Such as the index value, identification or number of the first transmission beam. For example, the index value corresponding to the first spatial information. In one possible implementation, the first terminal device can generate a correspondence between the first spatial information of at least one transmission beam (the at least one transmission beam includes the first transmission beam) and at least one index value, such as generating the correspondence in the order of the index values from large to small or from small to large. The correspondence can also be constructed into a list, which is not limited to this in the present application. Optionally, the first terminal device can also indicate the correspondence to the communication device. In another possible implementation, the communication device can generate the correspondence, such as generating the correspondence in the order of the index values from large to small or from small to large. The correspondence can also be constructed into a list, which is not limited to this in the present application.

The width information of the first transmit beam may be used to indicate the radiation width and/or the range of the radiation width of the first transmit beam.

In a possible implementation, the method further includes: sending identification information to the communication device, the identification information being used to indicate the second terminal device; wherein the identification information is associated with first spatial information of at least one transmission beam of the first terminal device, the at least one transmission beam includes the first transmission beam, and the first spatial information of the at least one transmission beam is used to indicate that the first terminal device supports SL communication with the second terminal device via the at least one transmission beam; or, the identification information is used to indicate at least one of the following: the first terminal device supports SL communication with the second terminal device within FR2, and the first terminal device supports SL communication with the second terminal device using all transmission beams indicated by the first terminal device to the communication device.

In the above embodiment, after acquiring the identification information, the communication device can obtain the first spatial information of at least one transmission beam associated with the identification information, and further can know that the first terminal device supports SL communication with the second terminal device through at least one transmission beam. Or, after acquiring the identification information, the communication device can know that the first terminal device supports SL communication with the second terminal device in FR2 and/or supports SL communication with the second terminal device using all transmission beams indicated by the first terminal device to the communication device.

In a second aspect, a communication method is provided, which is applied to a communication device, and the method includes: receiving first spatial information of a first transmission beam from a first terminal device; sending first indication information to the first terminal device according to the first spatial information of the first transmission beam, and the first The indication information is used to indicate a first resource corresponding to the first transmitting beam, and the first resource is used for SL communication between the first terminal device and the second terminal device.

In a possible implementation, the method further includes: sending second indication information to the first terminal device, where the second indication information is used to indicate one or more reference direction information in the second spatial information, and the second spatial information is used to determine the first spatial information.

In a possible implementation, the second indication information is used to indicate one or more reference direction information in the second spatial information, including: the second indication information is used to indicate information of at least one reference transmit beam; wherein the information of at least one reference transmit beam is used to determine one or more reference direction information in the second spatial information.

In a possible implementation, before sending the second indication information to the first terminal device, the method further includes: receiving a first request message from the first terminal device, where the first request message is used to request one or more reference direction information in the second spatial information.

In a possible implementation manner, the first spatial information of the first transmission beam further includes at least one of the following: identification information of the first transmission beam and width information of the first transmission beam.

In a possible implementation, the method further includes: receiving identification information from the first terminal device, the identification information being used to indicate the second terminal device; wherein the identification information is associated with first spatial information of at least one transmission beam of the first terminal device, the at least one transmission beam includes a first transmission beam, and the first spatial information of the at least one transmission beam is used to indicate that the first terminal device supports SL communication with the second terminal device via the at least one transmission beam; or, the identification information is used to indicate at least one of the following: the first terminal device supports SL communication with the second terminal device within FR2, and the first terminal device supports SL communication with the second terminal device using all transmission beams indicated by the first terminal device to the communication device.

In a possible implementation, the method further includes: receiving first spatial information of a second transmission beam from a third terminal device; sending first indication information to the first terminal device based on the first spatial information of the first transmission beam, including: sending first indication information to the first terminal device based on the first spatial information of the first transmission beam and the first spatial information of the second transmission beam.

In the above embodiment, the communication device can combine the first spatial information of the first transmitting beam and the first spatial information of the second transmitting beam to send the first indication information to the first terminal device. This can reduce the problem of low resource utilization caused by the communication device still allocating different resources when the transmitting beams of different terminal devices do not overlap.

In a possible implementation, the method further includes: sending third indication information to a third terminal device based on the first spatial information of the first transmitting beam and the first spatial information of the second transmitting beam, wherein the third indication information is used to indicate a second resource corresponding to the second transmitting beam, and the second resource is used for SL communication between the third terminal device and the fourth terminal device.

In the above embodiment, the communication device can combine the first spatial information of the first transmitting beam and the first spatial information of the second transmitting beam to send third indication information to the third terminal device. This can reduce the problem of low resource utilization caused by the communication device still allocating different resources when the transmitting beams of different terminal devices do not overlap.

In a possible implementation manner, when the first transmission beam does not overlap with the second transmission beam, the first resource overlaps with the second resource.

In the above embodiment, when the first transmission beam and the second transmission beam do not overlap, the communication device can provide the first resource that overlaps with the second resource to the first terminal device, which can improve resource utilization.

The non-overlapping of the first transmission beam and the second transmission beam can be understood as the radiation range of the first transmission beam is different from the radiation range of the second transmission beam. The overlapping of the first resource and the second resource can be understood as partial overlap or complete overlap.

According to a third aspect, a communication device is provided, comprising a unit or module for implementing the method as described in any one of the first aspect or the second aspect.

In a fourth aspect, a communication device is provided, comprising at least one processor and a memory; wherein the memory is used to store computer programs or instructions; and at least one processor is used to execute the computer programs or instructions in the memory, so that the method described in any one of the first aspect or the second aspect is executed.

In a fifth aspect, a communication system is provided, the communication system comprising a first terminal device and a communication device; the first terminal device is used to execute the method as described in any one of the first aspects; the communication device is used to execute the method as described in any one of the second aspects.

In a sixth aspect, a computer-readable storage medium is provided, characterized in that the computer-readable storage medium stores computer instructions, and when the computer instructions are executed, the computer executes the method as described in any one of the first aspect or the second aspect.

In a seventh aspect, a computer program product is provided, the computer program product comprising: a computer program code, and when the computer program code is executed by a computer, the computer executes the method as described in any one of the first aspect or the second aspect.

In an eighth aspect, a chip is provided, comprising at least one processor and an interface, wherein the processor is used to read and execute instructions stored in a memory, and when the instructions are executed, the chip executes the method described in any one of the first aspect or the second aspect.

For the technical effects that can be achieved by the above-mentioned second to seventh aspects and any possible implementation methods thereof, please refer to the technical effects that can be achieved by the above-mentioned first aspect and any possible implementation methods thereof, and no repetition will be given here.

BRIEF DESCRIPTION OF THE DRAWINGS

The following is a brief introduction to the drawings required for describing the embodiments.

FIG1 is a schematic diagram of LOS and NLOS;

FIG2 is a basic architecture of a communication system provided in an embodiment of the present application;

FIG3 is a flow chart of a communication method provided in an embodiment of the present application;

FIG4 is a schematic diagram of various angles along the clockwise direction and/or counterclockwise direction provided by an embodiment of the present application;

FIG5 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Among them, the terms "system" and "network" in the embodiments of the present application can be used interchangeably. Unless otherwise specified, "/" indicates that the objects associated before and after are in an "or" relationship. For example, A/B can represent A or B; "and/or" in this application is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. These three situations, where A and B can be singular or plural. And, in the description of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be one or more. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between network elements and identical or similar items with substantially the same functions. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference.

References to "one embodiment" or "some embodiments" etc. described in the embodiments of the present application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

The following specific implementation methods further describe in detail the objectives, technical solutions and beneficial effects of the present application. It should be understood that the following are only specific implementation methods of the present application and are not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the scope of protection of the present application.

In the various embodiments of the present application, unless otherwise specified or provided in a logical conflict, the terms and/or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

For ease of understanding, the following examples provide some explanations of concepts related to the embodiments of the present application for reference. As described below:

1. SL

SL refers to: a link defined for direct communication between terminal devices. That is, a link for direct communication between terminal devices without forwarding by a base station. The interface between terminal devices can be called a PC5 interface.

The communication types supported on the SL may include broadcast communication, multicast communication, and unicast communication. In the LTE system, the SL supports broadcast communication. In the New Radio (NR) system, the SL supports broadcast communication, multicast communication, and unicast communication.

Broadcast communication is similar to network equipment broadcasting system information, that is, the terminal device sends broadcast services to the outside without encryption. Any other terminal device within the effective receiving range can receive the broadcast service if it is interested in the broadcast service.

Multicast communication refers to the communication between all terminals in a communication group. Any terminal device in the group can send and receive multicast services.

Unicast communication is similar to data communication between a terminal device and a network device after establishing a radio resource control (RRC) connection. It requires a unicast connection to be established between the two terminal devices. After the unicast connection is established, the two terminal devices can communicate data based on the negotiated identifier. The data can be encrypted or unencrypted. Compared with broadcast, in unicast communication, only two terminal devices that have established a unicast connection can communicate.

The SL involved in this application may be a super sidelink (SSL), which is an enhancement of SL.

In SL communication, a terminal device may obtain resources (time domain resources and/or frequency domain resources) in the following ways:

Method 1: The terminal device obtains resources based on the scheduling mode (also referred to as mode 1). For example, the terminal device first sends a SL cache status report (sidelink buffer status report, SL BSR) to the network device. The SL BSR is used to report the amount of data that the terminal device currently needs to transmit on the SL, so that the network device allocates an SL authorization (grant) of appropriate size according to the amount of data. For example, for periodic services, the terminal device reports the attributes of the periodic service, such as start time, period, packet size, etc., so that the network device can configure a periodic SL grant for the terminal device, so that the terminal device does not need to obtain the SL grant by frequently reporting the SL BSR. The SL grant here is the resource configured by the network device for the terminal device.

Mode 2: The terminal obtains resources based on the autonomous mode (also called mode 2). That is, the terminal device can autonomously select resources from the SL resource pool configured or pre-configured by the network device, such as randomly selecting resources, or selecting resources based on the results of sensing or partial sensing.

It should be noted that the time domain resources involved in the present application may include at least one of the following: time units of different time granularities such as frames, subframes, time slots, sub-time slots, micro-time slots or symbols. Symbols may also be called orthogonal frequency-division multiplexing (OFDM) symbols. The frequency domain resources involved in the present application may include at least one of the following: resource block group (RBG), resource block (RB), and subcarrier.

2. Radio Resource Control (RRC) Idle State

When the terminal device is in idle state, the terminal device does not retain the RRC context. The RRC context is a parameter for establishing communication between the terminal device and the network device. The RRC context may include security context, capability information of the terminal device, etc. At the same time, the terminal device has not established a connection with the core network device, that is, the core network device is in CN-IDLE (core network idle state). The terminal device has no data to be transmitted and will enter the sleep state, turning off the transceiver unit to reduce power consumption. The terminal device in idle state only wakes up periodically to receive paging messages.

3. RRC connected state (connected)

When the terminal device is in the connected state, the terminal device has established an RRC context. The parameters required to establish communication between the terminal device and the network device have been obtained by both parties. The network device allocates a cell radio network temporary identifier (C-RNTI) to the connected terminal device. At the same time, the terminal device also establishes a connection with the core network device, that is, the core network device is in CN_CONNECTED (core network connected state). At this time, if the terminal device is transmitting data, it is in a continuous reception state until the data transmission is completed and enters the waiting state, switching to a connected discontinuous reception (DRX) to save power consumption. If there is still data to be transmitted later, the terminal device returns to the continuous reception state again. At this time, since the RRC context has been established, the switching time required for the UE to leave the connected DRX state and prepare for continuous reception is much shorter than the time to switch from the idle state to the connected state.

4. RRC inactive state

When the terminal device is in the deactivated state, the RRC context is retained between the terminal device and the network device. At the same time, the terminal device also establishes a connection with the core network device, that is, the core network device is in CN_CONNECTED (core network connected state). At this time, the process of switching to the connected state for data reception is relatively fast, and no additional core network signaling overhead is generated. In addition, the terminal device in the RRC deactivated state will also enter the sleep state. Therefore, the deactivated state can meet the needs of reducing connection latency, reducing signaling overhead and power consumption.

5. Out of coverage (OCC) state

When the terminal device is in the OCC state, there are two situations. One situation is that the terminal device is not within the coverage of the network device and cannot communicate with the network device. The other situation is that the carrier for SL communication of the terminal device is not within the coverage of the network device, for example, the carrier of the network device is different from the carrier for SL communication of the terminal device.

6. Beam

A beam can be a set of predefined beamforming weights in the context of codebook-based precoding, or a set of dynamically defined beamforming weights in the context of non-codebook-based precoding (e.g., eigen-based beamforming (EBB)). A beam can also be a predefined set of phase shift preprocessors used to combine signals from an antenna array in the radio frequency (RF) domain. For example, a terminal device can rely on codebook-based precoding to transmit uplink signals or receive downlink signals, and a network device can rely on non-codebook-based precoding to form certain radiation patterns to send downlink signals or receive uplink signals.

In general, a transmitter may transmit data to a receiver via a transmit beam, and a receiver may receive data from the transmitter via a receive beam. The transmit beam and the receive beam may be referred to as a pair of beams, and these beams may have similar spatial domain characteristics, such as beam directions, and are referred to as spatially quasi-collocated (QCL). For example, most of the transmit energy of the transmit beam and most of the receive energy of the receive beam may be oriented in similar but opposite directions, for example, on a two-dimensional plane, the transmit energy of the transmit beam and the receive energy of the receive beam may be oriented 180 degrees relative to each other.

7. Signal Quality

Signal quality is the result of measuring signal quality or signal energy based on wireless signals. The wireless signal may be, for example, a reference signal, which may be used for channel measurement or channel estimation, such as a channel state information reference signal (CSI-RS), a phase tracking reference signal (PTRS), a demodulation reference signal (DMRS), a sounding reference signal (SRS), a positioning reference signal (PRS), or a synchronization signal block (SSB). Signal quality may include, for example, at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), signal to interference and noise ratio (SSB). The meanings of the above terms may refer to the provisions of the protocol or standard of the communication technology adopted by the communication link, for example.

8. Non-line of sight (NLOS)

When the direct path between the transmitter and the receiver is blocked by an obstacle, the wireless signal reaches the receiver after reflection and diffraction. The data measured by the receiver, such as arrival time, time difference, incident angle, etc., will not correctly reflect the actual distance between the transmitter and the receiver. This can be called NLOS. In other words, the wireless signal does not reach the receiver directly from the transmitter, but reaches the receiver through reflection, scattering and diffraction of other objects. At this time, the wireless signal propagation path is called NLOS path. On the contrary, if the data measured by the receiver can correctly reflect the actual distance between the transmitter and the receiver, it can be called line of sight (LOS). In other words, the propagation path of the wireless signal between the transmitter and the receiver is a straight line. At this time, the wireless signal propagation path is called LOS path.

Exemplarily, the receiving end may determine whether the transmission between the sending end and the receiving end is LOS by any of the following methods, specifically:

1. During the observation period, the receiving end can receive multiple signals from the transmitting end, and calculate multiple distance data between the transmitting end and the receiving end based on the multiple signals. The distance data can be one or more of the arrival time, time difference, incident angle, etc.; then the multiple distance data are smoothed; then the standard deviation of the multiple distance data after smoothing is calculated; finally, the standard deviation is compared with the pre-measured standard deviation to determine whether the transmission between the transmitting end and the receiving end is LOS. If the standard deviation is less than or equal to the pre-measured standard deviation, it is considered LOS, otherwise, it is considered NLOS. Among them, the pre-measured standard deviation is the standard deviation when the transmission between the transmitting end and the receiving end is LOS.

2. The receiving end can receive the signal from the transmitting end, determine the power delay profile (PDP) spectrum of the signal, and determine whether the transmission between the transmitting end and the receiving end is LOS based on the PDP spectrum. If there are multiple signal quality peaks on the PDP spectrum that are greater than the preset quality (the preset quality can be predefined or preconfigured, or configured by the receiving end to the transmitting end, which is not limited here), the transmission between the transmitting end and the receiving end is considered to be NLOS; conversely, if the PDP spectrum is a single spectrum line, the transmission between the transmitting end and the receiving end is considered to be LOS. In addition, the receiving end can also determine whether the transmission between the transmitting end and the receiving end is LOS based on the spatial domain characteristics. If the receiving end receives signals from multiple directions, the transmission between the transmitting end and the receiving end is considered to be NLOS.

3. The receiving end can determine whether the transmission between the transmitting end and the receiving end is LOS based on the K factor, where the K factor is the ratio between the power sum of the LOS path and the power sum of the NLOS path in the multipath. When the K factor is larger, it is closer to the LOS path, and vice versa, it is closer to the NLOS path.

It should be noted that the manner in which the transmitting end determines whether the transmission between the transmitting end and the receiving end is LOS is similar and will not be described in detail here.

As another example, refer to FIG. 1 , which is a schematic diagram of LOS and NLOS. In 1-1 of FIG. 1 , on a two-dimensional plane, the transmission energy of the transmission beam and the reception energy of the reception beam can be oriented 180 degrees relative to each other. At this time, the data measured by the receiving end or the transmitting end can reflect the actual distance between the transmitting end and the receiving end, so the transmission between the transmitting end and the receiving end is LOS. In 1-2 of FIG. 1 , on a two-dimensional plane, the transmission energy of the transmission beam and the reception energy of the reception beam have a certain angle. At this time, the data measured by the receiving end or the transmitting end may not reflect the actual distance between the transmitting end and the receiving end, so the transmission between the transmitting end and the receiving end is NLOS.

9. FR2

FR2 can realize the deployment and application of frequency bands above 6GHz. FR2 has abundant spectrum resources and a wide bandwidth, providing data transmission channels for a variety of new services that require high-capacity communications, such as virtual reality, high-definition video transmission, and vehicle to everything (V2X). Especially in the V2X scenario, FR2 can realize functions such as vehicle platooning, extended sensors, and autonomous driving.

The following introduces the infrastructure of the communication system provided by the embodiment of the present application. See Figure 2, which is an infrastructure of a communication system provided by the embodiment of the present application. In 2-1 of Figure 2, which corresponds to the scenario of mode 1, the communication system may include a network device 10, a terminal device 11, and a terminal device 12. Among them, the network device 10 can allocate resources to the terminal device 11 and the terminal device 12, and the terminal device 11 can perform SL communication with the terminal device 12. In 2-2 of Figure 2, corresponding to the scenario of mode 2, the communication system may include a terminal device 20, a terminal device 21, and a terminal device 22. Among them, the terminal device 20 can select resources based on the results of monitoring or partial monitoring, such as by sensing the sidelink control information (SCI) from the terminal device 22, determining the resources reserved by the terminal device 22, and selecting resources based on the resources reserved by the terminal device 22. Further, the terminal device 20 can perform SL communication with the terminal device 21 by selecting the good resources.

It should be pointed out that the various terminal devices involved in Figure 2 (such as terminal device 11 and terminal device 12 in 2-1 of Figure 2; for example, terminal device 20, terminal device 21 and terminal device 22 in 2-2 of Figure 2, etc.) can be in RRC connected state, RRC inactive state, RRC idle state or OOC state, etc., which are not limited here. Optionally, the different devices involved in Figure 2 can communicate through a relay terminal. For example, network device 10 can allocate resources to terminal device 11 and terminal device 12 respectively through a relay terminal device, that is, a sidelink UE-to-Network relay scenario; for example, terminal device 11 can communicate with terminal device 12 through a relay terminal for SL communication. The communication system is a communication system in which a source UE and a relay UE are connected to each other in a sidelink UE-to-UE relay scenario, and a relay UE and a target UE are connected to each other in a sidelink UE-to-UE relay scenario, wherein the terminal device 11 can be understood as the source terminal and the terminal device 12 can be understood as the target terminal. The following describes in detail each device involved in the communication system.

1. Terminal equipment

Terminal equipment is an entity on the user side that is used to receive signals, or send signals, or both receive and send signals. Terminal equipment is used to provide one or more of voice services and data connectivity services to users. Terminal equipment can be a device that includes wireless transceiver functions and can cooperate with network equipment to provide communication services to users. Specifically, terminal equipment can refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, terminal, wireless communication equipment, user agent, user device or road side unit (RSU). The terminal device can also be a drone, an Internet of Things (IoT) device, a station (ST) in a wireless local area network (WLAN), a cellular phone, a smart phone, a cordless phone, a wireless data card, a tablet computer, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a laptop computer, a The terminal device may be a machine type communication (MTC) terminal, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device (also referred to as a wearable smart device), a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The terminal device may also be a terminal in a 5G system or a terminal in a next-generation communication system, which is not limited in the embodiments of the present application. Optionally, the terminal device may be referred to as an anchor device.

The embodiments of the present application do not limit the device form of the terminal device. The device for realizing the function of the terminal device can be the terminal device; it can also be a device that can support the terminal device to realize the function, such as a chip system. The device can be installed in the terminal device or used in combination with the terminal device. In the embodiments of the present application, the chip system can be composed of chips, or it can include chips and other discrete devices.

2. Network equipment

A network device is an entity on the network side that is used to send signals, receive signals, or both send and receive signals. A network device can be a device deployed in a radio access network (RAN) to provide wireless communication functions for terminal devices, such as a transmission reception point (TRP), a base station, or various forms of control nodes. For example, a network controller, a wireless controller, or a wireless controller in a cloud radio access network (CRAN) scenario. Specifically, the network equipment can be various forms of macro base stations, micro base stations (also called small stations), relay stations, access points (AP), radio network controllers (RNC), node B (NB), base station controllers (BSC), base transceiver stations (BTS), home base stations (e.g., home evolved node B, or home node B, HNB), baseband units (BBU), transmission points (TRP), transmitting points (TP), mobile switching centers, satellites or drones, etc., and can also be antenna panels of base stations. The control node can connect to multiple base stations and configure resources for multiple terminals covered by multiple base stations. In systems using different wireless access technologies, the names of devices with base station functions may be different. For example, it can be a gNB in 5G, or a network-side device in a network after 5G, or a network device in a future public land mobile (communication) network (public land mobile network, PLMN) network, or a device that performs base station functions in device-to-device (D2D) communication, machine-to-machine (machine-to-machine, M2M) communication, or vehicle networking communication, etc. This application does not limit the specific name of the network device. The network device can also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), etc.

In a possible implementation, multiple network devices collaborate to assist the terminal in achieving wireless access, and different network devices respectively implement part of the functions of the base station. For example, the network device may be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU may be set separately, or may be included in the same network element, such as a BBU. The RU may be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). It is understandable that the network device may be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into a network device in the access network RAN, or the CU may be divided into a network device in the core network CN, without limitation here.

In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application CU, CU-CP, CU-UP, DU and RU are used as examples for description. Any unit in CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

3. Relay Terminal

A relay terminal is an entity on the user side for receiving signals, or sending signals, or receiving and sending signals. A relay terminal can be used to provide one or more of voice services and data connectivity services to users. A relay terminal can be a device that includes wireless transceiver functions and can cooperate with network equipment to provide communication services to users. Specifically, a relay terminal can refer to a UE, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a terminal, a wireless communication device, a user agent, a user device, or an RSU. A relay terminal can also be a drone, an IoT device, an ST in a WLAN, a cellular phone, a smart phone, a cordless phone, a wireless data card, a tablet computer, a SIP phone, a WLL station, a PDA device, a laptop, an MTC terminal, a handheld device with a wireless communication function, a computing device or other processing equipment connected to a wireless modem, a vehicle-mounted device, a wearable device (also referred to as a wearable smart device), a VR terminal, an AR terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The relay terminal may also be a terminal in a 5G system or a terminal in a next-generation communication system, which is not limited in the embodiments of the present application.

The embodiments of the present application do not limit the device form of the relay terminal. The device for implementing the function of the relay terminal may be a relay terminal; or it may be a device that can support the relay terminal to implement the function, such as a chip system. The device may be installed in the relay terminal or used in conjunction with the relay terminal. In the embodiments of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices.

It should be noted that the communication system shown in FIG. 2 does not constitute a limitation on the communication system to which the embodiment of the present application can be applied. The communication method provided in the embodiment of the present application can be applied to communication systems of various formats, such as: long term evolution (LTE) communication system, 5G communication system, 6G communication system and future communication system. The communication method provided in the embodiment of the present application can also be applied to wireless local area network (WLAN) system, V2X, LTE-vehicle (LTE-V), vehicle to vehicle (V2V), vehicle networking, machine type communications (MTC), IoT, LTE-machine to machine (LTE-M), M2M, Internet of Things, etc. In addition, it should be noted that the embodiment of the present application does not limit the names of the network elements in the communication system. For example, in communication systems of different formats, each network element can have other names; for another example, when multiple network elements are integrated into the same physical device, the physical device can also have other names.

The communication method provided by the embodiment of the present application will be specifically described below in conjunction with Figure 2. Specifically, the terminal device (such as the first terminal device, the second terminal device, the third terminal device, the fourth terminal device, etc.) in the following text may be the terminal device in Figure 2, and the communication device in the following text may be the network device or the terminal device in Figure 2. When the communication device is a terminal device, its implementation process can refer to the relevant process when the communication device is a network device, which is not repeated here. The following is an example of a communication device being a network device.

It should be noted that the message names between network elements or the names of parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the embodiments of the present application do not impose any specific limitations on this.

As shown in FIG3 , a communication method is provided in an embodiment of the present application, and the communication method includes but is not limited to the following steps:

301. A first terminal device determines first spatial information of a first transmitting beam.

It should be noted that the spatial information involved in the present application can be referred to as relative spatial relations information or relative direction information, etc., and the embodiments of the present application do not specifically limit this. In addition, the first transmission beam mentioned in step 301 can be a beam transmitted by the first terminal device, and can also be understood as: the first transmission beam is used for the first terminal device to communicate with the second terminal device.

Optionally, step 301 may include: the first terminal device determines the first spatial information of the first transmit beam according to the second spatial information. The second spatial information may include one or more reference direction information. For example, the second spatial information may include first reference direction information and second reference direction information. Optionally, different reference directions indicated by multiple reference direction information in the second spatial information are not parallel, such as the first reference direction indicated by the first reference direction information and the second reference direction indicated by the second reference direction information are not parallel. In one implementation, the first reference direction is perpendicular to the ground, such as vertically upward or vertically downward; the second reference direction is parallel to the ground, such as horizontally north, horizontally south, horizontally east or horizontally west. In another implementation, the first reference direction is parallel to the ground, such as horizontally north, horizontally south, horizontally east or horizontally west; the second reference direction is perpendicular to the ground, such as vertically upward or vertically downward. This application does not limit the specific direction of the reference direction (such as the first reference direction or the second reference direction). It should be noted that in this application, the direction parallel to the ground (such as the first reference direction or the second reference direction, etc.) can be determined according to the navigation device and/or GNSS. Optionally, the navigation device may be a compass, and the GNSS may be a GPS or BeiDou system. In the above embodiment, the first terminal device may determine the first spatial information of the first transmission beam, such as the direction of the first transmission beam, by using the non-parallel reference directions indicated by the different reference direction information in the second spatial information, so that the direction of the first transmission beam in the three-dimensional space can be accurately determined.

In a possible implementation manner, the first terminal device may determine the second spatial information in one or more of the following ways, specifically:

1. The first terminal device determines one or more reference direction information in the second spatial information based on pre-definition or pre-configuration. In other words, One or more reference directions respectively indicated by one or more reference direction information may be predefined or preconfigured. Exemplarily, one or more reference direction information includes first reference direction information, and the first reference direction indicated by the first reference direction information may be predefined or preconfigured, such as the first reference direction being perpendicular to the ground (e.g., vertically upward or vertically downward) is predefined or preconfigured. Multiple reference direction information may also include second reference direction information, and the second reference direction indicated by the second reference direction information may be predefined or preconfigured, such as the second reference direction being parallel to the ground (e.g., horizontally north, horizontally south, horizontally east, horizontally west) is predefined or preconfigured. The present application does not limit the specific direction of the reference direction (e.g., the first reference direction or the second reference direction) indicated by the reference direction information. It should be noted that one or more reference direction information in the second spatial information may also be predefined or preconfigured in the network device, wherein the reference direction information predefined or preconfigured in the network device is exactly the same as the reference direction information predefined or preconfigured in the first terminal device.

2. The first terminal device receives second indication information from the network device, and the second indication information is used to indicate one or more reference direction information in the second spatial information. In the present application, a certain indication information may be indicated by one or more fields or the bit value corresponding to the field, etc. when indicating the corresponding information. For example, when the second indication information indicates the first reference direction information, it may indicate the first reference direction information through a field, or, when the bit value corresponding to the field is 1, it indicates the first reference direction information. For another example, when the second indication information indicates the first reference direction information and the second reference direction information, it may indicate the first reference direction information and the second reference direction information through a field; or, one field indicates the first reference direction information, and another field indicates the second reference direction information; or, when the bit value corresponding to a field is 1, it indicates the first reference direction information, and when the bit value corresponding to the field is 0, it indicates the second reference direction information, etc., which is not limited here. Optionally, the second indication information may be, for example, sent when the network device determines that the transmission between the current network device and the first terminal device is NLOS, or the second indication information may be sent when the network device receives a first request message from the first terminal device, such as when the first terminal device determines that the transmission between the current network device and the first terminal device is NLOS, then sends a first request message to the network device. The first request message may be used to request one or more reference direction information in the second spatial information. The first request message may be, for example, an RRC message or a media access control (MAC) control element (CE) message. The RRC message involved in the present application may be a UE assistance information (UAI) message or a sidelink user information (SUI) message, etc., which is not limited here. In a possible implementation, the second indication information is used to indicate one or more reference direction information in the second spatial information, including: the second indication information is used to indicate information of at least one reference transmit beam. Information of at least one reference transmit beam may be used to determine one or more reference direction information in the second spatial information. For example, the direction of the reference transmit beam indicated by the information of the reference transmit beam is the same as the reference direction indicated by the reference direction information in the second spatial information, or the reverse direction of the direction (i.e., the direction of the reference transmit beam) is the same as the reference direction indicated by the reference direction information in the second spatial information. For another example, the direction of the reference receive beam corresponding to the reference transmit beam is the same as the reference direction indicated by the reference direction information in the second spatial information, or the reverse direction of the direction (i.e., the direction of the reference receive beam) is the same as the reference direction indicated by the reference direction information in the second spatial information. Optionally, the information of the reference transmit beam can be used to uniquely identify the reference transmit beam, for example, it can be an index value, an identifier or a number.

3. The first terminal device determines one or more reference direction information in the second spatial information according to the direction of at least one receiving beam. If the transmission between the current network device and the first terminal device is LOS, the first terminal device can determine one or more reference direction information in the second spatial information according to the direction of at least one receiving beam. Among them, at least one receiving beam is a receiving beam used by the first terminal device to receive information from the network device. Optionally, the transmitting beam corresponding to the receiving beam (that is, the transmitting beam used by the network device when sending the information) can be the beam with the best signal quality. Optionally, the reference direction indicated by the reference direction information in the second spatial information can be the same as the direction of the receiving beam, or the same as the opposite direction of the direction (that is, the direction of the receiving beam).

4. The first terminal device determines one or more reference direction information in the second spatial information based on at least one first direction. The first direction here may include a direction perpendicular to the ground (such as vertically upward or vertically downward) or a direction parallel to the ground (such as horizontally north, horizontally south, horizontally east or horizontally west, etc.). Optionally, the reference direction indicated by the reference direction information in the second spatial information may be the same as the first direction, or the same as the opposite direction of the first direction. In a possible implementation, the method further includes: the first terminal device indicates one or more reference direction information in the second spatial information to the network device.

In any of the above-mentioned methods 1-4, the first terminal device can have the same understanding of the second spatial information as the network device, and the network device can also correctly interpret the first spatial information determined based on the second spatial information.

It should be pointed out that any one of the above methods 1-4 can be used alone as an implementation method for the first terminal device to determine the second spatial information. Alternatively, at least two of the above methods 1-4 can be combined as an implementation method for the first terminal device to determine the second spatial information. For example, the first reference direction indicated by the first reference direction information in the second spatial information may be predefined or preconfigured; the second reference direction indicated by the second reference direction information in the second spatial information may be indicated by the second indication information. For another example, the first reference direction indicated by the first reference direction information in the second spatial information may be determined according to the direction of a receiving beam (recorded as the first receiving beam), that is, the first reference direction is the same as the direction of the first receiving beam or the opposite direction of the direction (the direction of the first receiving beam); the second reference direction indicated by the second reference direction information in the second spatial information may be predefined or preconfigured. The above are just a few simple examples, and there are others. This application does not limit the combination method.

Optionally, the first spatial information of the first transmit beam can be used to indicate the angle information of the direction of the first transmit beam relative to the reference directions indicated by one or more reference direction information in the second spatial information. It can also be understood that the first spatial information of the first transmit beam can be used to determine the direction of the first transmit beam.

In a possible implementation, the first spatial information of the first transmit beam may include at least one angle information, and the at least one angle information is used to indicate the angle formed by the direction of the first transmit beam and the reference direction indicated by one or more reference direction information in the second spatial information. The following is an example in which the second spatial information includes the first reference direction information and the second reference direction information, specifically:

The first spatial information of the first transmission beam includes an angle information, and the angle information can be used to indicate the angle formed by the direction of the first transmission beam in a clockwise direction or a counterclockwise direction and the first reference direction indicated by the first reference direction information. The angle information is also used to indicate the angle formed by the direction of the first transmission beam in a clockwise direction or a counterclockwise direction and the second reference direction indicated by the second reference direction information. In conjunction with FIG4, the angle information can be used to indicate the first angle and the second angle in 4-1 of FIG4, the first angle being the angle formed by the direction of the first transmission beam in a clockwise direction and the first reference direction, and the second angle being the angle formed by the direction of the first transmission beam in a clockwise direction and the second reference direction. Alternatively, the angle information can be used to indicate the first angle and the second angle in 4-2 of FIG4, the first angle being the angle formed by the direction of the first transmission beam in a counterclockwise direction and the first reference direction, and the second angle being the angle formed by the direction of the first transmission beam in a counterclockwise direction and the second reference direction. Alternatively, the angle information can be used to indicate the first angle and the second angle in 4-3 of FIG. 4, where the first angle is the angle formed by the direction of the first transmission beam and the first reference direction in the counterclockwise direction, and the second angle is the angle formed by the direction of the first transmission beam and the second reference direction in the clockwise direction. Alternatively, the angle information can be used to indicate the first angle and the second angle in 4-4 of FIG. 4, where the first angle is the angle formed by the direction of the first transmission beam and the first reference direction in the clockwise direction, and the second angle is the angle formed by the direction of the first transmission beam and the second reference direction in the counterclockwise direction.

The first spatial information of the first transmission beam includes first angle information and second angle information. The first angle information can be used to indicate the angle formed by the direction of the first transmission beam in a clockwise direction or a counterclockwise direction and the first reference direction. The second angle information can be used to indicate the angle formed by the direction of the first transmission beam in a clockwise direction or a counterclockwise direction and the second reference direction indicated by the second reference direction information. In conjunction with Figure 4, the first angle information is used to indicate the first angle in 4-1 of Figure 4 or 4-2 of Figure 4, and the second angle information is used to indicate the second angle in 4-1 of Figure 4 or 4-2 of Figure 4.

In a possible implementation, the angle information in the first spatial information of the first transmission beam may be angle identification information. For ease of description, the angle formed by the direction of the first transmission beam in the clockwise direction or the counterclockwise direction and the first reference direction is recorded as the first angle, and the angle formed by the direction of the first transmission beam in the clockwise direction or the counterclockwise direction and the second reference direction indicated by the second reference direction information is recorded as the second angle.

Exemplarily, the first spatial information of the first transmission beam includes an angle information, and the angle information may be the angle identification information corresponding to the first angle and the second angle. It is assumed that there may be M*N angle identification information corresponding to the first angle and the second angle, "*" indicates multiplication, and N and M are both integers greater than or equal to 1. Optionally, N and M are predefined integers, or N and M are determined by the first terminal device and the network device based on negotiation, such as the first terminal device sends capability information to the network device, and the capability information includes N and M. In one implementation, if X is an integer greater than or equal to 1, the first angle indicated by the Xth angle identification information is (360 degrees/M)*(floor((X-1)/M)), floor is a rounding operation, floor(X/M) may be equal to ceil(X/M)-1, ceil is a rounding operation, "/" is division, and the second angle indicated by the Xth angle identification information is (360 degrees/N)*((X-1)mod N)), and mod is a remainder operation. As shown in Table 1, N and M are both 2, the first angle and the second angle indicated by the first angle identification information are both 0 degrees, the first angle and the second angle indicated by the second angle identification information are respectively 0 degrees and 180 degrees, the first angle and the second angle indicated by the third angle identification information are respectively 180 degrees and 0 degrees, and the first angle and the second angle indicated by the fourth angle identification information are both 180 degrees. In another implementation, if X is an integer greater than or equal to 0, the first angle indicated by the Xth angle identification information is (360 degrees/M)*(floor(X/M)), and the second angle indicated by the Xth angle identification information is (360 degrees/N)*(Xmod N)). As shown in Table 2, N and M are both 2, the first angle and the second angle indicated by the 0th angle identification information are both 0 degrees, the first angle and the second angle indicated by the first angle identification information are both 0 degrees, the first angle and the second angle indicated by the second angle identification information are respectively 180 degrees and 0 degrees, and the first angle and the second angle indicated by the third angle identification information are both 180 degrees.

Table 1

Table 2

Another exemplary embodiment, the first spatial information of the first transmitted beam includes first angle information and second angle information. In one possible implementation, the first angle information is first angle identification information, and the second angle information is second angle. In another possible implementation, the first angle information is the first angle, and the second angle information is the second angle identification information; or, the first angle information is the first angle identification information, and the second angle information is the second angle identification information, which is not limited in this application. Assume that there can be K angle identification information (such as the first angle identification information or the second angle identification information), and K is an integer greater than or equal to 1. Optionally, K is a predefined integer, or K is determined by the first terminal device and the network device based on negotiation, such as the first terminal device sends capability information to the network device, and the capability information includes K. In one implementation, the Lth angle identification information is (360 degrees/K)*(L-1), and L is an integer greater than or equal to 1 and less than or equal to K. As shown in Table 3, when K is 3, taking the first angle information as the first angle identification information and the second angle information as the second angle as an example, the first angle indicated by the 1st first angle identification information is 0 degrees, the first angle indicated by the 2nd first angle identification information is 120 degrees, and the first angle indicated by the 3rd first angle identification information is 240 degrees. In another implementation, the Pth angle identification information is (360 degrees/K)*P, where P is an integer greater than or equal to 0. As shown in Table 4, when K is 3, taking the first angle information as the first angle and the second angle information as the second angle identification information as an example, the second angle indicated by the 0th second angle identification information is 0 degrees, the second angle indicated by the 1st second angle identification information is 120 degrees, and the second angle indicated by the 2nd second angle identification information is 240 degrees.

Table 3

Table 4

In one implementation, the first spatial information of the first transmit beam may further include at least one of the following: identification information of the first transmit beam, width information of the first transmit beam. Optionally, each information included in the first spatial information may be carried in the same cell or different cells in the RRC message or the MAC CE message.

In another implementation, the first spatial information does not include the identification information of the first transmit beam and/or the width information of the first transmit beam. The first terminal device may also send the identification information of the first transmit beam and/or the width information of the first transmit beam to the network device. Optionally, the first spatial information and at least one of the following: the identification information of the first transmit beam and the width information of the first transmit beam may be carried in the same information element or in different information elements in the RRC message or the MAC CE message. This allows the network device to obtain the identification information of the first transmit beam and/or the width information of the first transmit beam. 1. Transmit beam width information. When the network device learns the width information of the first transmit beam, it can help the network device determine the radiation range of the first transmit beam, thereby reducing the interference problem caused by the network device allocating the same resources when the radiation ranges of the transmit beams of different terminal devices overlap.

Among them, the identification information of the first transmission beam can be used to uniquely identify the first transmission beam. Such as the index value, identification or number of the first transmission beam. For example, the index value corresponding to the first spatial information. Specifically, the first terminal device can generate a correspondence between the first spatial information of at least one transmission beam (the at least one transmission beam includes the first transmission beam) and at least one index value, such as generating the correspondence in order of index values from large to small or from small to large. The correspondence can also be constructed into a list, which is not limited in this application. Optionally, the first terminal device can also indicate the correspondence to the network device.

The width information of the first transmit beam may be used to indicate the radiation width and/or the range of the radiation width of the first transmit beam.

In a possible implementation, step 301 may be an optional step.

302. The first terminal device sends first spatial information of a first transmission beam to a network device.

Correspondingly, the network device receives the first spatial information from the first terminal device.

Optionally, the method further includes: the first terminal device sends identification information to the network device, where the identification information is used to indicate the second terminal device. The identification information may be a destination ID or a destination index.

Optionally, the identification information and the first spatial information of the first transmit beam may be located in different messages, or in different cells of the same message, or in the same message, or in the same cell of the same message, etc. The message here may be an RRC message or a MAC CE message, etc.

In one implementation, the identification information may be associated with the first spatial information of at least one transmit beam of the first terminal device, and the at least one transmit beam includes the first transmit beam. The first spatial information of the at least one transmit beam is used to indicate that the first terminal device supports SL communication with the second terminal device through the at least one transmit beam. Optionally, the method further includes: the first terminal device sends the first spatial information of at least one transmit beam to the network device. The identification information and the first spatial information of at least one transmit beam may be located in different messages, or in different information elements of the same message, or in the same message, or in the same information element of the same message, etc. The message here may be an RRC message or a MAC CE message, etc. In a possible implementation, the first terminal device may send multiple identification information and the first spatial information of at least one transmit beam associated with different identification information in the multiple identification information to the network device at one time, such as sending multiple identification information and the first spatial information of at least one transmit beam associated with different identification information in the multiple identification information to the network device at one time through an RRC message or a MAC CE message. The at least one transmit beam associated with different identification information may be different, partially the same, or completely the same. In another possible implementation, the first terminal device may send one identification information and the first spatial information of at least one transmission beam associated with the identification information to the network device at one time, such as sending one identification information and the first spatial information of at least one transmission beam associated with the identification information to the network device at one time through an RRC message or a MAC CE message. In the above embodiment, after obtaining the identification information, the network device can obtain the first spatial information of at least one transmission beam associated with the identification information, and further obtain the information that the first terminal device supports SL communication with the second terminal device through at least one transmission beam.

In another implementation, the identification information is used to indicate at least one of the following: the first terminal device supports SL communication with the second terminal device in FR2, and the first terminal device supports SL communication with the second terminal device using all transmission beams indicated by the first terminal device to the network device. At this time, it can also be understood that: the identification information is not associated with the first spatial information of at least one transmission beam. In this way, after obtaining the identification information, the network device can know that the first terminal device supports SL communication with the second terminal device in FR2 and/or supports SL communication with the second terminal device using all transmission beams indicated by the first terminal device to the communication device.

In another implementation, the first spatial information of the first transmission beam may be associated with at least one identification information, and the at least one identification information is used to identify at least one terminal device that performs SL communication with the first terminal device, and the at least one terminal device includes a second terminal device. The first spatial information of the first transmission beam and the at least one identification information may be located in different messages, or in different information elements of the same message, or in the same message, or in the same information element of the same message, etc. The message here may be an RRC message or a MAC CE message, etc. In a possible time mode, the first terminal device may transmit the first spatial information of multiple transmission beams and at least one identification information associated with the first spatial information of multiple transmission beams to the network device at one time, such as transmitting the first spatial information of multiple transmission beams and the identification information associated with the first spatial information of multiple transmission beams to the network device at one time through an RRC message or a MAC CE message. The identification information associated with the first spatial information of different transmission beams may be different, partially the same, or completely the same. In another possible implementation, the first terminal device may transmit the first spatial information of a transmission beam and at least one identification information associated with the first spatial information of the transmission beam to the network device at one time, such as transmitting the first spatial information of a transmission beam and at least one identification information associated with the first spatial information of the transmission beam to the network device at one time through an RRC message or a MAC CE message. In the above embodiment, when the network device learns the first spatial information of the first transmission beam, it can learn at least one identification information associated with the first spatial information, and further learn at least one terminal device that performs SL communication with the first terminal device, such as at least one terminal device that performs SL communication with the first terminal device through at least one transmission beam.

303. The network device sends first indication information to the first terminal device according to the first spatial information of the first transmission beam. The first indication information The information is used to indicate the first resource corresponding to the first transmitting beam, and the first resource is used for SL communication between the first terminal device and the second terminal device.

Correspondingly, the first terminal device receives the first indication information from the network device.

Among them, the first indication information is used to indicate the first resource corresponding to the first transmitting beam, which can be understood as: the first indication information includes the identification information of the first transmitting beam and the first resource; or, the first indication information includes the first resource associated with the identification information of the first transmitting beam and/or the spatial information of the first transmitting beam.

Optionally, the method further includes: the network device receives the location information of the first terminal device from the first terminal device. It should be noted that the location information involved in the present application may include horizontal position and/or altitude position, and the horizontal position may also be understood as latitude and longitude and/or regional information, and the regional information may be, for example, a zone or a cell where the first terminal device is located. In one possible implementation, when the first spatial information of the first transmission beam does not include the width information of the first transmission beam, step 303 may include: the network device sends the first indication information to the first terminal device according to the first spatial information of the first transmission beam and one or more of the following, the location information of the first terminal device, and the width information of the first transmission beam. In another possible implementation, when the first spatial information of the first transmission beam includes the width information of the first transmission beam, step 303 may include: the network device sends the first indication information to the first terminal device according to the first spatial information of the first transmission beam and the location information of the first terminal device. This enables the network device to determine the first resource that is suitable for the first terminal device to perform SL communication and corresponds to the first transmission beam.

Optionally, the method further includes: the network device receives first spatial information of a second transmission beam from a third terminal device, wherein the first spatial information of the second transmission beam is similar to the first spatial information of the first transmission beam and is not described in detail here.

Exemplarily, the following is an example in which the first spatial information of the first transmission beam includes the width information of the first transmission beam, and the first spatial information of the second transmission beam includes the width information of the second transmission beam. The network device sends the first indication information to the first terminal device according to the first spatial information of the first transmission beam and the location information of the first terminal device, which can be understood as: the network device determines that the first transmission beam and the second transmission beam do not overlap according to the first spatial information of the first transmission beam, the location information of the first terminal device and the first spatial information of the second transmission beam, and sends the first indication information to the first terminal device. The non-overlap of the first transmission beam and the second transmission beam can be understood as the radiation range of the first transmission beam is different from the radiation range of the second transmission beam. Optionally, the network device can also send third indication information to the third terminal device. The third indication information is used to indicate the second resource corresponding to the second transmission beam, and the second resource is used for the third terminal device to communicate with the fourth terminal device for SL. The third indication information is similar to the first indication information and is not repeated here. Optionally, the first resource and the second resource overlap, and the overlap of the first resource and the second resource can be understood as partial overlap or complete overlap. In the above embodiment, when the first transmission beam and the second transmission beam do not overlap, the network device may indicate the overlapping resources to the first terminal device and the second resource, which can improve resource utilization.

Optionally, the method further includes: the network device determines that the first transmission beam and the second transmission beam do not overlap based on the first spatial information of the first transmission beam, the position information of the first terminal device, and the first spatial information of the second transmission beam. This can be understood as: the network device determines that the first transmission beam and the second transmission beam do not overlap based on the first spatial information of the first transmission beam, the position information of the first terminal device, the first spatial information of the second transmission beam, and the position information of the third terminal device. Since more information is combined when determining that the first transmission beam and the second transmission beam do not overlap, such as the first spatial information of the first transmission beam, the position information of the first terminal device, the first spatial information of the second transmission beam, and the position information of the third terminal device, it can be more accurately determined whether the first transmission beam and the second transmission beam overlap.

In a possible implementation, when the first spatial information of the first transmission beam includes at least one of the following: identification information of the first transmission beam and width information of the first transmission beam, the location information of the first terminal device and one or more of the first spatial information, identification information, etc. of the first transmission beam may be located in different messages, or in different information elements of the same message, or in the same message, or in the same information element of the same message, etc. The message here may be an RRC message or a MAC CE message, etc. When the first spatial information of the first transmission beam does not include the identification information of the first transmission beam and/or the width information of the first transmission beam, the location information of the first terminal device and one or more of the first spatial information, identification information, etc. of the first transmission beam may be located in different messages, or in different information elements of the same message, or in the same message, or in the same information element of the same message, etc.

In another possible implementation, the first spatial information of the first transmit beam may also include location information of the first terminal device.

In the above embodiment, the first terminal device can send the first spatial information of the first transmission beam to the network device, so that the network device can indicate the first resource corresponding to the first transmission beam to the first terminal device based on the first spatial information, and the first resource can be used for the first terminal device to perform SL communication with the second terminal device. This indicates that the network device can allocate the first resource for SL communication to the first terminal device in combination with the spatial information of the first transmission beam used by the first terminal device for SL communication. This can reduce the problem of low resource utilization caused by the network device still allocating different resources when the transmission beams of different terminal devices do not overlap.

The above mainly introduces the solution provided by the present application from the perspective of interaction between various devices. It can be understood that in order to realize the above functions, the above-mentioned implementation devices include hardware structures and/or software modules corresponding to executing various functions. It should be easy for those skilled in the art to understand It is recognized that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

The embodiment of the present application can divide the terminal device (such as the first terminal device, etc.) or the network device into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

Refer to Figure 5, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device 500 can be applied to the method shown in the embodiment of Figure 3 above. As shown in Figure 5, the communication device 500 includes: a processing module 501 and a transceiver module 502. The processing module 501 can be one or more processors, and the transceiver module 502 can be a transceiver or a communication interface. The communication device can be used to implement the terminal device (such as the first terminal device, etc.) or network device involved in any of the above method embodiments, or to implement the functions of the network element involved in any of the above method embodiments. The network element or network function can be a network element in a hardware device, a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform). Optionally, the communication device 500 may also include a storage module 503 for storing program code and data of the communication device 500.

In one example, when the communication device is used as a terminal device (such as a first terminal device, etc.) or as a chip used in a terminal device, and performs the steps performed by the terminal device in the above method embodiment. The transceiver module 502 is used to support communication with a network device, a second terminal device, etc. The transceiver module specifically performs the sending and/or receiving actions performed by the terminal device in the embodiment shown in FIG. 3, for example, supports the terminal device to perform other processes of the technology described herein. The processing module 501 can be used to support the communication device 500 to perform the processing actions in the above method embodiment, for example, supports the terminal device to perform step 301, and/or other processes of the technology described herein.

Specifically, the processing module 501 is used to determine the first spatial information of the first transmitting beam; send the first spatial information of the first transmitting beam to the communication device; the transceiver module 502 is used to receive the first indication information from the communication device, the first indication information is used to indicate the first resource corresponding to the first transmitting beam, and the first resource is used for SL communication between the first terminal device and the second terminal device.

In a possible implementation, when determining the first spatial information of the first transmit beam, the processing module 501 is used to determine the first spatial information of the first transmit beam according to the second spatial information. Optionally, the second spatial information may include first reference direction information and second reference direction information, and the first reference direction indicated by the first reference direction information and the second reference direction indicated by the second reference direction information are not parallel.

In a possible implementation, the transceiver module 502 is further configured to receive second indication information from the communication device, where the second indication information is used to indicate one or more reference direction information in the second spatial information.

In a possible implementation, the second indication information is used to indicate one or more reference direction information in the second spatial information, including: the second indication information is used to indicate information of at least one reference transmit beam; wherein the information of at least one reference transmit beam is used to determine one or more reference direction information in the second spatial information.

In a possible implementation, the transceiver module 502 is further configured to send a first request message to the communication device, where the first request message is used to request one or more reference direction information in the second spatial information.

In a possible implementation, the processing module 501 is further used to determine one or more reference direction information in the second spatial information according to the direction of at least one receiving beam, where at least one receiving beam is a receiving beam used by the first terminal device to receive information from the communication device.

In a possible implementation manner, the first spatial information of the first transmit beam may be used to indicate angle information of the direction of the first transmit beam relative to a reference direction indicated by one or more reference direction information in the second spatial information.

In a possible implementation manner, the first spatial information of the first transmission beam further includes at least one of the following: identification information of the first transmission beam and width information of the first transmission beam.

In a possible implementation, the transceiver module 502 is further used to send identification information to the communication device, where the identification information is used to indicate the second terminal device; wherein the identification information is associated with the first spatial information of at least one transmission beam of the first terminal device, the at least one transmission beam includes the first transmission beam, and the first spatial information of the at least one transmission beam is used to indicate that the first terminal device supports SL communication with the second terminal device through the at least one transmission beam; or, the identification information is used to indicate at least one of the following: the first terminal device supports SL communication with the second terminal device within FR2, and the first terminal device supports SL communication with the second terminal device using all transmission beams indicated by the first terminal device to the communication device.

In one example, when the communication device is used as a network device or a chip used in a network device, and performs the steps performed by the network device in the above method embodiment. The transceiver module 502 is used to support communication with the first terminal device, the second terminal device, etc., and the transceiver module specifically The processing module 501 can be used to support the communication device 500 to perform the processing actions in the above method embodiment, for example, to support the network device to perform other processes of the technology described herein.

Specifically, the transceiver module 502 is used to: receive first spatial information of a first transmitting beam from a first terminal device; and send first indication information to the first terminal device based on the first spatial information of the first transmitting beam, wherein the first indication information is used to indicate a first resource corresponding to the first transmitting beam, and the first resource is used for SL communication between the first terminal device and the second terminal device.

In a possible implementation, the transceiver module 502 is further used to send second indication information to the first terminal device, where the second indication information is used to indicate one or more reference direction information in the second spatial information, and the second spatial information is used to determine the first spatial information.

In a possible implementation, the second indication information is used to indicate one or more reference direction information in the second spatial information, including: the second indication information is used to indicate information of at least one reference transmit beam; wherein the information of at least one reference transmit beam is used to determine one or more reference direction information in the second spatial information.

In a possible implementation, the transceiver module 502 is further configured to receive a first request message from the first terminal device, where the first request message is used to request one or more reference direction information in the second spatial information.

In a possible implementation manner, the first spatial information of the first transmission beam further includes at least one of the following: identification information of the first transmission beam and width information of the first transmission beam.

In a possible implementation, the transceiver module 502 is further used to receive identification information from the first terminal device, where the identification information is used to indicate the second terminal device; wherein the identification information is associated with first spatial information of at least one transmission beam of the first terminal device, the at least one transmission beam includes the first transmission beam, and the first spatial information of the at least one transmission beam is used to indicate that the first terminal device supports SL communication with the second terminal device through the at least one transmission beam; or, the identification information is used to indicate at least one of the following: the first terminal device supports communication with the second terminal device within FR2, and the first terminal device supports SL communication with the second terminal device using all transmission beams indicated by the first terminal device to the communication device.

In a possible implementation, the transceiver module 502 is further used to receive first spatial information of a second transmission beam from a third terminal device; when sending first indication information to the first terminal device based on the first spatial information of the first transmission beam, the transceiver module 502 is used to send the first indication information to the first terminal device based on the first spatial information of the first transmission beam and the first spatial information of the second transmission beam.

In a possible implementation, the transceiver module 502 is also used to send third indication information to a third terminal device based on the first spatial information of the first transmission beam and the first spatial information of the second transmission beam, where the third indication information is used to indicate a second resource corresponding to the second transmission beam, and the second resource is used for SL communication between the second terminal device and the third terminal device.

In a possible implementation manner, when the first transmission beam does not overlap with the second transmission beam, the first resource overlaps with the second resource.

In a possible implementation, when the terminal device (such as the first terminal device) or the network device is a chip, the transceiver module 502 may be a communication interface, a pin or a circuit, etc. The communication interface may be used to input data to be processed to the processor, and may output the processing result of the processor to the outside. In a specific implementation, the communication interface may be a general purpose input output (GPIO) interface, which may be connected to multiple peripheral devices (such as a display (LCD), a camera (camara), a radio frequency (RF) module, an antenna, etc.). The communication interface is connected to the processor via a bus.

The processing module 501 may be a processor, which may execute computer-executable instructions stored in the storage module, so that the chip executes the method involved in the embodiment shown in FIG. 3 .

Furthermore, the processor may include a controller, an arithmetic unit and a register. Exemplarily, the controller is mainly responsible for decoding instructions and issuing control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations, and logical operations, etc., and may also perform address operations and conversions. The register is mainly responsible for storing register operands and intermediate operation results temporarily stored during the execution of instructions. In a specific implementation, the hardware architecture of the processor may be an ASIC architecture, a microprocessor without interlocked piped stages architecture (MIPS) architecture, an advanced RISC machines (ARM) architecture, or a second processor (NP) architecture, etc. The processor may be single-core or multi-core.

The storage module may be a storage module within the chip, such as a register, a cache, etc. The storage module may also be a storage module located outside the chip, such as a ROM or other types of static storage devices that can store static information and instructions, a RAM, etc.

It should be noted that the functions corresponding to the processor and the interface can be implemented through hardware design, software design, or a combination of hardware and software, and there is no limitation here.

FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. It is understood that the communication device 610 includes necessary means such as modules, units, elements, circuits, or interfaces, which are appropriately configured together to implement the present solution. The communication device 610 may The above-mentioned terminal device (such as the first terminal device) or network device, or a component (such as a chip) in these devices, is used to implement the method described in the above-mentioned method embodiment. The communication device 610 includes one or more processors 611. The processor 611 can be a general-purpose processor or a dedicated processor, etc. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a terminal device (such as the first terminal device), network device, or chip, etc.), execute the software program, and process the data of the software program.

Optionally, in one design, the processor 611 may include a program 613 (sometimes also referred to as code or instruction), and the program 613 may be executed on the processor 611, so that the communication device 610 performs the method described in the above embodiment. In another possible design, the communication device 600 includes a circuit (not shown in FIG. 6 ), and the circuit is used to implement the functions of the terminal device (such as the first terminal device), the network device, etc. in the above embodiment.

Optionally, the communication device 610 may include one or more memories 612 on which a program 614 (sometimes also referred to as code or instruction) is stored. The program 614 may be executed on the processor 611 so that the communication device 610 executes the method described in the above method embodiment.

Optionally, the processor 611 and/or the memory 612 may include an AI module 617 and an AI module 618, and the AI module is used to implement AI-related functions. The AI module may be implemented by software, hardware, or a combination of software and hardware. For example, the AI module may include a RIC module. For example, the AI module may be a near real-time RIC or a non-real-time RIC.

Optionally, data may also be stored in the processor 611 and/or the memory 612. The processor and the memory may be provided separately or integrated together.

Optionally, the communication device 610 may further include a transceiver 615 and/or an antenna 616. The processor 611 may also be sometimes referred to as a processing unit, which controls the communication device (e.g., a terminal device (e.g., a first terminal device) or a network device). The transceiver 615 may also be sometimes referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., which is used to implement the transceiver function of the communication device through the antenna 616.

An embodiment of the present application provides a communication device, which includes at least one processor and a memory; wherein the memory is used to store computer programs or instructions; and at least one processor is used to execute the computer programs or instructions in the memory, so that any method described in any one of the embodiments shown in Figure 3 is executed.

An embodiment of the present application provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed, the computer executes any one of the methods in the embodiments shown in FIG. 3 .

An embodiment of the present application provides a computer program product, which includes: a computer program code, and when the computer program code is executed by a computer, the computer executes any one of the methods shown in the embodiments of FIG. 3 .

An embodiment of the present application provides a chip, which includes at least one processor and an interface, wherein the processor is used to read and execute instructions stored in a memory, and when the instructions are executed, the chip executes any method as shown in the embodiment of FIG. 3 .

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application. In addition, each network element unit in each embodiment of the present application 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 units may be implemented in the form of hardware or in the form of software network element units.

If the above-mentioned integrated unit is implemented in the form of a software network element unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the part that essentially contributes to the technical solution of the present application, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a terminal device, a cloud server, or a network device, etc.) to perform all or part of the steps of the above-mentioned methods in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program code. The above is only a specific implementation method of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (25)

A communication method, characterized in that the method is applied to a first terminal device, and the method comprises: Determining first spatial information of a first transmit beam; Sending first spatial information of the first transmit beam to a communication device; Receive first indication information from the communication device, where the first indication information is used to indicate a first resource corresponding to the first transmit beam, and the first resource is used for side link communication between the first terminal device and a second terminal device. The method according to claim 1, characterized in that the determining the first spatial information of the first transmit beam comprises: Determining first spatial information of the first transmit beam according to the second spatial information; The second spatial information includes first reference direction information and second reference direction information, and the first reference direction indicated by the first reference direction information and the second reference direction indicated by the second reference direction information are not parallel. The method according to claim 1 or 2, characterized in that the method further comprises: Second indication information is received from the communication device, where the second indication information is used to indicate one or more reference direction information in the second spatial information. The method according to claim 3, characterized in that the second indication information is used to indicate one or more reference direction information in the second spatial information, including: the second indication information is used to indicate information of at least one reference transmission beam; The information of the at least one reference transmission beam is used to determine one or more reference direction information in the second spatial information. The method according to claim 3 or 4, characterized in that the method further comprises: A first request message is sent to the communication device, where the first request message is used to request one or more reference direction information in the second spatial information. The method according to claim 1 or 2, characterized in that the method further comprises: One or more reference direction information in the second spatial information is determined according to the direction of at least one receiving beam, and the at least one receiving beam is a receiving beam used by the first terminal device to receive information from the communication device. The method according to any one of claims 1 to 6 is characterized in that the first spatial information of the first transmitting beam is used to indicate angle information of the direction of the first transmitting beam relative to a reference direction indicated by one or more reference direction information in the second spatial information. The method according to any one of claims 1-7 is characterized in that the first spatial information of the first transmitting beam also includes at least one of the following: identification information of the first transmitting beam and width information of the first transmitting beam. The method according to any one of claims 1 to 8, characterized in that the method further comprises: Sending identification information to the communication device, where the identification information is used to indicate the second terminal device; The identification information is associated with first spatial information of at least one transmit beam of the first terminal device, the at least one transmit beam includes the first transmit beam, and the first spatial information of the at least one transmit beam is used to indicate that the first terminal device supports sidelink communication with the second terminal device through the at least one transmit beam; or, The identification information is also used to indicate at least one of the following: the first terminal device supports side link communication with the second terminal device within a second frequency domain range FR2, and the first terminal device supports side link communication with the second terminal device using all transmission beams indicated by the first terminal device to the communication device. A communication method, characterized in that the method is applied to a communication device, and the method comprises: Receiving first spatial information of a first transmit beam from a first terminal device; According to the first spatial information of the first transmitting beam, first indication information is sent to the first terminal device, where the first indication information is used to indicate a first resource corresponding to the first transmitting beam, and the first resource is used for side link communication between the first terminal device and a second terminal device. The method according to claim 10, characterized in that the method further comprises: Sending second indication information to the first terminal device, where the second indication information is used to indicate one or more reference direction information in second spatial information, and the second spatial information is used to determine the first spatial information. The method according to claim 11, characterized in that the second indication information is used to indicate one or more reference direction information in the second spatial information, including: the second indication information is used to indicate information of at least one reference transmission beam; The information of the at least one reference transmission beam is used to determine one or more reference direction information in the second spatial information. The method according to claim 11 or 12, characterized in that before sending the second indication information to the first terminal device, the method further comprises: receiving a first request message from the first terminal device, wherein the first request message is used to request one of the second spatial information or multiple reference direction information. The method according to any one of claims 10-13 is characterized in that the first spatial information of the first transmitting beam is used to indicate the angle information of the direction of the first transmitting beam relative to the reference direction indicated by one or more reference direction information in the second spatial information. The method according to any one of claims 10-14 is characterized in that the first spatial information of the first transmitting beam also includes at least one of the following: identification information of the first transmitting beam and width information of the first transmitting beam. The method according to any one of claims 10 to 15, characterized in that the method further comprises: receiving identification information from the first terminal device, where the identification information is used to indicate the second terminal device; The identification information is associated with first spatial information of at least one transmit beam of the first terminal device, the at least one transmit beam includes the first transmit beam, and the first spatial information of the at least one transmit beam is used to indicate that the first terminal device supports sidelink communication with the second terminal device through the at least one transmit beam; or, The identification information is also used to indicate at least one of the following: the first terminal device supports side link communication with the second terminal device within a second frequency domain range FR2, and the first terminal device supports side link communication with the second terminal device using all transmission beams indicated by the first terminal device to the communication device. The method according to any one of claims 10 to 16, characterized in that the method further comprises: Receiving first spatial information of a second transmission beam from a third terminal device; The sending first indication information to the first terminal device according to the first spatial information of the first transmit beam includes: The first indication information is sent to the first terminal device according to the first spatial information of the first transmitting beam and the first spatial information of the second transmitting beam. The method according to claim 17, characterized in that the method further comprises: According to the first spatial information of the first transmitting beam and the first spatial information of the second transmitting beam, third indication information is sent to the third terminal device, and the third indication information is used to indicate the second resource corresponding to the second transmitting beam, and the second resource is used for the third terminal device to perform side link communication with a fourth terminal device. The method according to claim 17 or 18 is characterized in that when the first transmit beam does not overlap with the second transmit beam, the first resource and the second resource overlap. A communication device, characterized by comprising a unit or module for implementing the method as claimed in any one of claims 1 to 19. A communication device, characterized in that the communication device comprises at least one processor and a memory; The memory is used to store computer programs or instructions; and the at least one processor is used to execute the computer programs or instructions in the memory, so that the method described in any one of claims 1 to 19 is executed. A communication system, characterized in that the communication system comprises a first terminal device and a communication device; The first terminal device is used to perform the method according to any one of claims 1 to 9; The communication device is configured to execute the method according to any one of claims 10 to 19. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions, and when the computer instructions are executed, the computer is caused to execute the method as described in any one of claims 1 to 19. A computer program product, characterized in that the computer program product comprises: a computer program code, and when the computer program code is executed by a computer, the computer executes the method as claimed in any one of claims 1 to 19. A chip, characterized in that the chip includes at least one processor and an interface, the processor is used to read and execute instructions stored in a memory, and when the instructions are executed, the chip executes the method according to any one of claims 1 to 19.