CN112840738A

CN112840738A - Wireless communication method and communication device

Info

Publication number: CN112840738A
Application number: CN201980065736.8A
Authority: CN
Inventors: 卢前溪; 赵振山; 杨皓睿; 林晖闵
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2021-05-25
Anticipated expiration: 2039-06-18
Also published as: WO2020252655A1; CN112840738B

Abstract

A wireless communication method and a communication device are provided, the method comprising: determining whether to establish a unicast link between the first terminal device and the second terminal device based on at least one of: quality information of a channel between the first terminal device and the second terminal device, a type of the first terminal device, and a type of the second terminal device; and when the unicast link is determined to be established, establishing or triggering the establishment of the unicast link. Based on the technical scheme, the establishment of the unicast link between the first terminal device and the second terminal device is controlled through at least one of the quality information of the channel between the first terminal device and the second terminal device, the type of the first terminal device and the type of the second terminal device, so that the establishment mechanism of the unicast link is perfected, the establishment of the unicast link with poor channel quality can be avoided, and the user experience can be further improved.

Description

Wireless communication method and communication device

Technical Field

The present embodiments relate to the field of communications, and more particularly, to a wireless communication method and a communication device.

Background

Currently, only the distance based Service (ProSe) and the wearable device (FeD2D) are involved in unicast links, neither of which specifies a mechanism for determining whether to allow establishment of a unicast link in the unicast link establishment procedure. For example, after a first terminal device sends a unicast link establishment request to a second terminal device, the second terminal device directly establishes a unicast link between the first terminal device and the second terminal device.

That is, there is no mechanism in the prior art for determining whether to allow establishment of a unicast link.

Therefore, there is a need in the art for a wireless communication method to improve the establishment mechanism of the unicast link.

Disclosure of Invention

A wireless communication method and a communication device are provided, which can improve the establishment mechanism of a unicast link.

In a first aspect, a wireless communication method is provided, including:

determining whether to establish a unicast link between the first terminal device and the second terminal device based on at least one of:

quality information of a channel between the first terminal device and the second terminal device, a type of the first terminal device, and a type of the second terminal device;

and when the unicast link is determined to be established, establishing or triggering the establishment of the unicast link.

In a second aspect, a communication device is provided, comprising:

a processing unit configured to determine whether to establish a unicast link between a first terminal device and a second terminal device according to at least one of the following information:

and the communication unit is used for establishing or triggering the establishment of the unicast link when the establishment of the unicast link is determined.

In a third aspect, a communication device is provided for performing the method of the first aspect or its implementation manners.

For example, the communication device comprises functional modules for performing the methods in the first aspect or its implementations described above.

In a fourth aspect, a communication device is provided that includes a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method in the first aspect or each implementation manner thereof.

In a fifth aspect, a chip is provided for implementing the method in the first aspect or its implementation manners.

For example, the chip includes: a processor, configured to call and run a computer program from a memory, so that a device in which the chip is installed performs the method according to the first aspect or each implementation manner thereof.

A sixth aspect provides a computer-readable storage medium for storing a computer program, the computer program causing a computer to perform the method of the first aspect or its implementations.

In a seventh aspect, a computer program product is provided, which includes computer program instructions for causing a computer to execute the method of the first aspect or its implementation modes.

In an eighth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the first aspect or its implementations.

Based on the technical scheme, the establishment of the unicast link between the first terminal device and the second terminal device is controlled through at least one of the quality information of the channel between the first terminal device and the second terminal device, the type of the first terminal device and the type of the second terminal device, so that the establishment mechanism of the unicast link is perfected, the establishment of the unicast link with poor channel quality can be avoided, and the user experience can be further improved.

In addition, whether the unicast link is allowed to be established is determined based on the indication of the network equipment or whether the unicast link is allowed to be established is determined based on the evaluation criterion sent by the network equipment, so that the monitoring strength of the network equipment on the unicast link can be improved, and the network equipment can conveniently and uniformly manage the terminal equipment.

Drawings

Fig. 1 is a schematic block diagram of a transmission mode of an embodiment of the present application.

Fig. 2 is a schematic block diagram of another transmission mode of the embodiment of the present application.

Fig. 3 to 9 are schematic flowcharts of a wireless communication method according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a communication device of an embodiment of the present application.

Fig. 11 is another schematic block diagram of a communication device of an embodiment of the present application.

Fig. 12 is a schematic block diagram of a chip of an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

The embodiment of the application can be applied to any terminal equipment-to-terminal equipment communication framework.

For example, Vehicle to Vehicle (V2V), Vehicle to other devices (V2X), terminal to terminal (Device to Device, D2D), etc.

The terminal in this embodiment may be any device or apparatus configured with a physical layer and a media access control layer, and the terminal device may also be referred to as an access terminal. Such as a User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other linear processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, or the like. The embodiment of the present application takes the in-vehicle terminal as an example for explanation, but is not limited to this.

Optionally, in some embodiments of the present application, embodiments of the present application may be applicable to transmission mode 3 and transmission mode 4 defined in the third Generation Partnership Project (3 GPP) Rel-14.

Fig. 1 is a schematic view of mode 3 of the embodiment of the present application. Fig. 2 is a schematic diagram of mode 4 of the embodiment of the present application.

In transmission mode 3 shown in fig. 1, transmission resources of in-vehicle terminals (in-vehicle terminal 121 and in-vehicle terminal 122) are allocated by base station 110, and the in-vehicle terminals perform data transmission on a sidelink according to the resources allocated by base station 110. Specifically, the base station 110 may allocate resources for single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.

In the transmission mode 4 shown in fig. 2, the vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132) adopt a transmission mode of listening (sending) and reserving (reserving), and the vehicle-mounted terminals autonomously select transmission resources on resources of the sidelink for data transmission.

The following specifically describes the in-vehicle terminal 131 as an example.

The vehicle-mounted terminal 131 acquires an available transmission resource set in the resource pool in an intercepting manner, and the vehicle-mounted terminal 131 randomly selects one transmission resource from the set to transmit data.

Since the service in the car networking system has a periodic characteristic, in this embodiment of the application, the car terminal 131 may also adopt a semi-static transmission mode. That is, after acquiring one transmission resource, vehicle-mounted terminal 131 continuously uses the transmission resource in a plurality of transmission cycles to reduce the probability of resource reselection and resource collision.

The in-vehicle terminal 131 may carry information of the reserved secondary transmission resource in the control information transmitted this time, so that other terminals (for example, the in-vehicle terminal 132) may determine whether the resource is reserved and used by the user by detecting the control information of the user, thereby achieving the purpose of reducing resource conflict.

The vehicle-mounted terminal related in the embodiment of the application can be suitable for scenes with high data interaction efficiency, such as automatic driving and the like.

Fig. 3 is a schematic flow chart diagram of a communication method 200 according to an embodiment of the present application. The method 200 may be performed by a terminal device. The terminal device shown in fig. 3 may be a vehicle-mounted terminal as shown in fig. 1 or fig. 2, and the network device shown in fig. 3 may be an access network device as shown in fig. 1. For convenience of description, the following description will be made taking a communication apparatus as an example.

As shown in fig. 3, the communication method 200 may include:

s210, the communication device determines whether to establish a unicast link between the first terminal device and the second terminal device according to at least one of the following information:

quality information of a channel between the first terminal device and the second terminal device, a type of the first terminal device, and a type of the second terminal device.

For example, the communication device may determine whether to allow the unicast link to be established according to the quality information, the type of the first terminal device, or the type of the second terminal device. For another example, the communication device may determine whether to allow the unicast link to be established based on the quality information and the type of the first terminal device. For another example, the communication device may determine whether to allow the unicast link to be established based on the channel quality and the type of the second terminal device. For another example, the communication device may determine whether to allow the unicast link to be established according to the type of the first terminal device and the type of the second terminal device. For another example, the communication device may determine whether to allow the unicast link to be established according to the channel quality, the type of the first terminal device, and the type of the second terminal device.

S220, when the communication equipment determines to establish the unicast link, the communication equipment establishes or triggers to establish the unicast link.

In some embodiments of the present application, the quality information comprises at least one of:

a Channel Busy Rate (CBR) measured by the first terminal device;

the CBR measured by the second terminal equipment;

reference Signal Receiving Power (RSRP) measured by the first terminal device;

a Reference Signal Receiving Quality (RSRQ) measured by the first terminal device;

a Signal to Interference plus Noise Ratio (SINR) measured by the first terminal device;

a Received Signal Strength Indication (RSSI) of the Received measured by the first terminal device;

the RSRP measured by the second terminal device;

the RSRQ measured by the second terminal device;

SINR measured by the second terminal device; and

the RSSI measured by the second terminal device.

Wherein the type of the second terminal device includes but is not limited to an access class (also referred to as an access priority) of the second terminal device. The type of the first terminal device comprises an access class of the first terminal device. For example, the type of the first terminal device may be other attribute information of the first terminal device. Such as address information.

The method 200 is described below by taking as an example that the communication device may be the first terminal device and/or the second terminal device, where the first terminal device is configured to send first information to the second terminal device, and the first information is used to trigger establishment of the unicast link.

In some embodiments of the present application, the first terminal device and/or the second terminal device may determine whether to allow the establishment of the unicast link based on an indication of a network device.

For example, the method 200 may further include:

sending second information to a network device, the second information including at least one of the quality information, the type of the first terminal device, and the type of the second terminal device.

After receiving the second information, the network device may determine and send third information based on the second information, where the third information is used to indicate whether to allow the unicast link to be established. The terminal device that receives the third information may determine whether to allow establishment of the unicast link according to the third information.

For example, after receiving the third information, the first terminal device may determine whether to trigger the second terminal device to establish the unicast link.

For another example, after receiving the third information, the second terminal device may determine whether to establish the unicast link.

Whether the unicast link is allowed to be established or not is determined based on the indication of the network equipment, so that the monitoring strength of the network equipment on the unicast link can be improved, and the network equipment can conveniently and uniformly manage the terminal equipment.

Further, the second information may further include at least one of the following information:

an address of the first terminal device;

an address of the second terminal device;

a quality of service, QoS, attribute; and

and (4) frequency points.

The frequency point includes, but is not limited to, at least one of a frequency point of the first terminal device, a frequency point of the second terminal device, and a frequency point of the unicast link.

Of course, in other embodiments, the frequency point may be replaced with information such as a frequency band.

In other embodiments of the present application, the first terminal device or the second terminal device may determine whether to allow the unicast link to be established.

For example, the network device may send an evaluation criterion to the first terminal device or the second terminal device, the evaluation criterion being used for the determination whether the unicast link is allowed to be established.

After receiving the evaluation criterion sent by the network device, the first terminal device may determine whether to trigger the second terminal device to establish the unicast link according to the evaluation criterion. After receiving the evaluation criterion sent by the network device, the first terminal device may determine whether to establish the unicast link according to the evaluation criterion.

Whether the unicast link is allowed to be established or not is determined based on the evaluation criterion sent by the network equipment, so that the monitoring strength of the network equipment on the unicast link can be improved, and the network equipment can conveniently and uniformly manage the terminal equipment.

Optionally, the evaluation criterion corresponds to at least one of the following information:

a target terminal device;

a service type;

a QoS attribute; and

and (4) frequency points.

The frequency point may be the same as or different from the frequency point in the second information, and this is not specifically limited in this application.

For example, the corresponding evaluation criteria may be different for different target terminal devices.

Similarly, the corresponding evaluation criteria may be different for different target terminal devices. The corresponding evaluation criteria may be different for different traffic types. The corresponding evaluation criteria may be different for different QoS attributes. The evaluation criteria may be different for different frequency points.

The evaluation criteria transmitted by the network device may include one or more evaluation criteria.

For example, the evaluation criterion sent by the network device may include at least one evaluation criterion corresponding to at least one service type.

The service type includes, but is not limited to, Public Safety Identity (PSID).

Optionally, the evaluation criterion comprises at least one of the following information:

a channel quality condition that allows establishment of a unicast link;

channel quality conditions that do not allow establishment of unicast links;

the type of terminal device allowed to establish the unicast link; and

the type of terminal device that is not allowed to establish the unicast link.

Further, the channel quality condition comprises at least one of the following information:

the value range of the channel busy rate CBR;

the value range of RSRP;

the value range of RSRQ; and

the range of values of SINR.

It is to be understood that the first terminal device may determine whether the establishment of the unicast link is allowed in combination with the information indicating whether the establishment of the unicast link is allowed and the above evaluation criterion, which are sent by the network device. For example, the indication information sent by the network device is used to indicate that the unicast link is allowed to be established, and when the first terminal device determines that the unicast link is allowed to be established according to the evaluation criterion, the second terminal device is triggered to establish the unicast link. For another example, the indication information sent by the network device is used to indicate that the unicast link is allowed to be established, and the second terminal device determines that the unicast link is allowed to be established according to the evaluation criterion, so as to establish the unicast link.

Further, when the indication information sent by the network device and the result determined according to the evaluation criterion conflict, the indication information of the network device may be preferentially selected to determine whether to allow establishment of the unicast link, or the indication information of the network device may be preferentially determined according to the evaluation criterion to determine whether to allow establishment of the unicast link, which is not specifically limited in the embodiment of the present application.

In some embodiments of the present application, the first terminal device or the second terminal device further needs to acquire a channel quality of a channel between the first terminal device and the second terminal device.

For example, the method 200 may further include:

receiving or transmitting a reference signal for measuring the channel quality.

In one implementation, the first terminal device transmits the reference signal, and the second terminal device measures the channel quality. In another implementation, the second terminal device transmits the reference signal, and the first terminal device measures the channel quality.

For another example, the method 200 may further include:

receiving or transmitting a measurement result including the channel quality measured based on the reference signal.

In one implementation, the first terminal device may receive the measurement result sent by the second terminal device, and in another implementation, the second terminal device may receive the measurement result sent by the first terminal device.

Still further, the method 200 may further include:

receiving or sending fourth information, wherein the fourth information is information for measuring the channel quality.

In one implementation, the first terminal device sends the fourth information to the second terminal device, and the second terminal device measures the channel quality based on the fourth information. In another implementation, the second terminal device sends the fourth information to the first terminal device, and the first terminal device measures the channel quality based on the fourth information.

Optionally, the fourth information is information required to measure the channel quality based on a reference signal. For example, the fourth information may be a measurement quantity that needs to be measured based on the reference signal. For example, the measurement quantity may include, but is not limited to, at least one of CBR, RSRP, RSRQ, and SINR.

Optionally, the fourth information further includes at least one of the following information:

a CBR for the first terminal device;

a CBR for the second terminal device;

a type of terminal device allowed to establish a unicast link with; and

the type of terminal device that is not allowed to establish the unicast link.

In some embodiments of the present application, the method 200 is applied to the first terminal device.

At this time, after the first terminal device sends the first information to the second terminal device, the first terminal device receives response information of the first information sent by the second terminal device.

Further, the method 200 may further include:

and the first terminal equipment sends fifth information to the second terminal equipment, wherein the fifth information is used for indicating whether the unicast link is allowed to be established or not.

Fig. 4 is a schematic flow chart diagram of a wireless communication method 300 of an embodiment of the present application.

As shown in fig. 4, the method 300 may include:

s310, the first terminal device sends second information to the first network device, wherein the second information comprises at least one of the quality information, the type of the first terminal device and the type of the second terminal device.

S320, the first network device determines third information based on the second information, where the third information is used to indicate whether to allow establishment of a unicast link between the first terminal device and the second terminal device.

S330, the first network device sends the third information to the first terminal device.

S340, the first terminal device determines whether to trigger a second terminal device to establish the unicast link according to the third information.

S350, when the first terminal device determines to trigger the second terminal device to establish the unicast link, sending first information to the second terminal device, where the first information is used to trigger establishment of the unicast link. For example, the first information may be a Direct Communication Request (Direct Communication Request). Alternatively, the first terminal device may transmit the first information to the second terminal device together with the direct communication request.

And S360, the second terminal equipment sends response information of the first information to the first terminal equipment. For example, DIRECT _ COMMUNICATION _ ACCEPT.

Fig. 5 is a schematic flow chart diagram of a wireless communication method 400 of an embodiment of the present application.

As shown in fig. 5, the method 400 may include:

s410, the first terminal device sends first information to the second terminal device, and the first information is used for triggering the establishment of the unicast link. For example, the first information may be a Direct Communication Request (Direct Communication Request).

S420, the second terminal device sends a response message of the first message to the first terminal device. For example, the second terminal device may send a DIRECT SECURITY MODE COMMAND (DIRECT SECURITY MODE COMMAND) to the first terminal device, and the DIRECT SECURITY MODE COMMAND may include response information of the first information. Alternatively, the second terminal device may transmit response information of the first information to the first terminal device together with the direct security mode command.

Optionally, the response information of the first information may include at least one of a channel quality of a channel between the first terminal device and the second terminal device measured by the second terminal device, a CBR for the second terminal device, and/or a type of the second terminal device.

S430, the first terminal device sends second information to a first network device, where the second information includes at least one of the quality information, the type of the first terminal device, and the type of the second terminal device.

S440, the first network device determines third information based on the second information, where the third information is used to indicate whether to allow establishment of a unicast link between the first terminal device and the second terminal device.

S450, the first network device sends the third information to the first terminal device.

S460, the first terminal device determines fifth information according to the third information, where the fifth information is used to indicate whether to allow establishment of the unicast link.

S470, the first terminal device sends the fifth information to the second terminal device. For example, the first terminal device may send DIRECT SECURITY MODE completion information (DIRECT _ SECURITY _ MODE _ COMPLETE) carrying the fifth information to the second terminal device, or the first terminal device may send the fifth information and the DIRECT SECURITY MODE completion information to the second terminal device.

In other embodiments of the present application, the method 200 may be applied to the second terminal device.

At this time, after receiving the first information sent by the first terminal device, the second terminal device sends response information of the first information to the first terminal device.

Fig. 6 is a schematic flow chart diagram of a wireless communication method 500 of an embodiment of the present application.

As shown in fig. 6, the method 500 may include:

s510, the first terminal device sends first information to the second terminal device, and the first information is used for triggering the establishment of the unicast link. For example, the first information may be a Direct Communication Request (Direct Communication Request).

S520, the second terminal device sends second information to a second network device, where the second information includes at least one of the quality information, the type of the first terminal device, and the type of the second terminal device.

S530, the second network device determines third information based on the second information, where the third information is used to indicate whether to allow establishment of a unicast link between the first terminal device and the second terminal device.

S540, the second network device sends the third information to the second terminal device.

And S550, the second terminal device determines whether to establish the unicast link according to the third information.

And S560, the second terminal device sends response information of the first information to the first terminal device according to the determination result in the S550. For example, the response information of the first information may be DIRECT _ COMMUNICATION _ ACCEPT.

It should be understood that fig. 4 to fig. 6 are examples of indicating, by a network device, whether to allow establishment of a unicast connection, that is, the first terminal device and/or the second terminal device are/is a terminal device in a connected state, but the embodiment of the present application is not limited thereto.

For example, in other alternative embodiments, the first terminal device and/or the second terminal device are/is a terminal device in an inactive state. Or the first terminal device and/or the second terminal device are/is a terminal device in an idle state.

At this time, the first terminal device or the second terminal device may determine whether to establish or trigger establishment of a unicast link between the first terminal device and the second terminal device directly according to the evaluation criterion based on the foregoing.

Fig. 7 is a schematic flow chart of a wireless communication method 3000 according to an embodiment of the present application.

As shown in fig. 7, the method 3000 may include:

and S3400, the first terminal equipment determines whether to trigger a second terminal equipment to establish the unicast link according to the evaluation criterion.

And S3500, when the first terminal device determines to trigger the second terminal device to establish the unicast link, sending first information to the second terminal device, wherein the first information is used for triggering the establishment of the unicast link. For example, the first information may be a Direct Communication Request (Direct Communication Request). Alternatively, the first terminal device may transmit the first information to the second terminal device together with the direct communication request.

And S3600, the second terminal device sends the response information of the first information to the first terminal device. For example, DIRECT _ COMMUNICATION _ ACCEPT.

Fig. 8 is a schematic flow chart of a wireless communication method 4000 according to an embodiment of the present application.

As shown in fig. 8, the method 4000 may include:

s4100, the first terminal device sends first information to the second terminal device, where the first information is used to trigger establishment of the unicast link. For example, the first information may be a Direct Communication Request (Direct Communication Request).

S4200, the second terminal device sends response information of the first information to the first terminal device. For example, the second terminal device may send a DIRECT SECURITY MODE COMMAND (DIRECT SECURITY MODE COMMAND) to the first terminal device, and the DIRECT SECURITY MODE COMMAND may include response information of the first information. Alternatively, the second terminal device may transmit response information of the first information to the first terminal device together with the direct security mode command.

S4600, the first terminal device determines fifth information according to the evaluation criterion, where the fifth information is used to indicate whether to allow establishment of the unicast link.

S4700, the first terminal device sends the fifth information to the second terminal device. For example, the first terminal device may send DIRECT SECURITY MODE completion information (DIRECT _ SECURITY _ MODE _ COMPLETE) carrying the fifth information to the second terminal device, or the first terminal device may send the fifth information and the DIRECT SECURITY MODE completion information to the second terminal device.

Fig. 9 is a schematic flow chart of a wireless communication method 5000 according to an embodiment of the present application.

As shown in fig. 9, the method 5000 may include:

s5100, a first terminal device sends first information to a second terminal device, where the first information is used to trigger establishment of the unicast link. For example, the first information may be a Direct Communication Request (Direct Communication Request).

S5500, the second terminal device determines whether to establish the unicast link according to the above evaluation criterion.

S5600, the second terminal device sends response information of the first information to the first terminal device according to the determination result in S5500. For example, the response information of the first information may be DIRECT _ COMMUNICATION _ ACCEPT.

In some embodiments of the present application, the method 200 may also be applicable to a network device.

In some embodiments of the present application, the method 200 may further comprise:

the network device receives second information, wherein the second information comprises at least one of the quality information, the type of the first terminal device and the type of the second terminal device.

Optionally, the second information further comprises at least one of the following information:

an address of the first terminal device;

an address of the second terminal device;

a QoS attribute; and

and (4) frequency points.

Further, the method 200 may further include:

the network device sends third information, where the third information is used to indicate whether to allow establishment of the unicast link.

In other embodiments of the present application, the method 200 may further comprise:

the network device sends an evaluation criterion for determining whether to establish the unicast link.

a target terminal device;

a service type;

a QoS attribute; and

and (4) frequency points.

a channel quality condition that allows establishment of a unicast link;

channel quality conditions that do not allow establishment of unicast links;

the type of terminal device allowed to establish the unicast link; and

the type of terminal device that is not allowed to establish the unicast link.

the value range of CBR;

the value range of RSRP;

the value range of RSRQ; and

the range of values of SINR.

The preferred embodiments of the present application have been described in detail with reference to the accompanying drawings, however, the present application is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications are all within the protection scope of the present application.

For example, the various features described in the foregoing detailed description may be combined in any suitable manner without contradiction, and various combinations that may be possible are not described in this application in order to avoid unnecessary repetition.

For example, various embodiments of the present application may be arbitrarily combined with each other, and the same should be considered as the disclosure of the present application as long as the concept of the present application is not violated.

It should be understood that, in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Method embodiments of the present application are described in detail above in conjunction with fig. 1-6, and apparatus embodiments of the present application are described in detail below in conjunction with fig. 10-12.

Fig. 10 is a schematic block diagram of a communication device 600 of an embodiment of the present application.

Specifically, as shown in fig. 10, the communication device 600 may include:

a processing unit 610, configured to determine whether to establish a unicast link between the first terminal device and the second terminal device according to at least one of the following information:

a communication unit 620, configured to establish or trigger establishment of the unicast link when it is determined that the unicast link is established.

a channel busy rate CBR measured by the first terminal equipment;

the CBR measured by the second terminal equipment;

reference Signal Received Power (RSRP) measured by the first terminal equipment;

the Reference Signal Received Quality (RSRQ) measured by the first terminal equipment;

the signal to noise and interference ratio (SINR) measured by the first terminal equipment;

a received signal strength indication, RSSI, measured by the first terminal device;

the RSRP measured by the second terminal device;

the RSRQ measured by the second terminal device;

SINR measured by the second terminal device; and

the RSSI measured by the second terminal device.

In some embodiments of the present application, the type of the second terminal device comprises an access class of the second terminal device.

In some embodiments of the present application, the type of the first terminal device comprises an access class of the first terminal device.

In some embodiments of the present application, the communication device is the first terminal device and/or the second terminal device, where the first terminal device is configured to send first information to the second terminal device, and the first information is used to trigger establishment of the unicast link.

In some embodiments of the present application, the communication unit 620 is further configured to:

In some embodiments of the present application, the second information further comprises at least one of:

an address of the first terminal device;

an address of the second terminal device;

a quality of service, QoS, attribute; and

and (4) frequency points.

receiving third information sent by the network device, wherein the third information is used for indicating whether the unicast link is allowed to be established or not; the processing unit 610 is specifically configured to:

and determining whether to establish the unicast link according to the third information.

receiving an evaluation criterion sent by network equipment; the processing unit 610 is specifically configured to:

determining whether to establish the unicast link according to the evaluation criterion.

In some embodiments of the present application, the evaluation criterion corresponds to at least one of the following information:

a target terminal device;

a service type;

a quality of service, QoS, attribute; and

and (4) frequency points.

In some embodiments of the present application, the evaluation criterion comprises at least one of the following information:

a channel quality condition that allows establishment of a unicast link;

channel quality conditions that do not allow establishment of unicast links;

the type of terminal device allowed to establish the unicast link; and

the type of terminal device that is not allowed to establish the unicast link.

In some embodiments of the present application, the channel quality condition comprises at least one of the following information:

the value range of the channel busy rate CBR;

the value range of reference signal received power RSRP;

the range of Reference Signal Received Quality (RSRQ); and

the range of the signal-to-noise-and-interference ratio SINR.

receiving or transmitting a reference signal for measuring the channel quality.

In some embodiments of the present application, the fourth information further comprises at least one of the following information:

a channel busy rate CBR for the first terminal device;

a channel busy rate CBR for the second terminal device;

a type of terminal device allowed to establish a unicast link with; and

the type of terminal device that is not allowed to establish the unicast link.

In some embodiments of the present application, the communication device is the first terminal device;

the communication unit 620 is specifically configured to:

sending the first information to the second terminal equipment;

and receiving response information of the first information sent by the second terminal equipment.

and sending fifth information to the second terminal equipment, wherein the fifth information is used for indicating whether the unicast link is allowed to be established or not.

In some embodiments of the present application, the communication device is the second terminal device;

the communication unit 620 is specifically configured to:

receiving the first information sent by the first terminal equipment;

and sending response information of the first information to the first terminal equipment.

In some embodiments of the present application, the first terminal device and/or the second terminal device is a terminal device in a connected state.

In some embodiments of the present application, the first terminal device and/or the second terminal device is a terminal device in an inactive state.

In some embodiments of the present application, the first terminal device and/or the second terminal device is a terminal device in an idle state.

In some embodiments of the present application, the communication device is a network device.

receiving second information, the second information comprising at least one of the quality information, a type of the first terminal device, and a type of the second terminal device.

an address of the first terminal device;

an address of the second terminal device;

a quality of service, QoS, attribute; and

and (4) frequency points.

and sending third information, wherein the third information is used for indicating whether the unicast link is allowed to be established or not.

sending an evaluation criterion for determining whether to establish the unicast link.

a target terminal device;

a service type;

a quality of service, QoS, attribute; and

and (4) frequency points.

a channel quality condition that allows establishment of a unicast link;

channel quality conditions that do not allow establishment of unicast links;

the type of terminal device allowed to establish the unicast link; and

the type of terminal device that is not allowed to establish the unicast link.

the value range of the channel busy rate CBR;

the value range of reference signal received power RSRP;

the range of Reference Signal Received Quality (RSRQ); and

the range of the signal-to-noise-and-interference ratio SINR.

It is to be understood that apparatus embodiments and method embodiments may correspond to one another and that similar descriptions may refer to method embodiments. Specifically, the communication device 600 shown in fig. 10 may correspond to a corresponding main body in executing the method in the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the communication device 600 are respectively for implementing corresponding flows in each method, and are not described again here for brevity.

The communication device of the embodiment of the present application is described above from the perspective of functional modules in conjunction with fig. 10. It should be understood that the functional modules may be implemented by hardware, by instructions in software, or by a combination of hardware and software modules.

Specifically, the steps of the method embodiments in the present application may be implemented by integrated logic circuits of hardware in a processor and/or instructions in the form of software, and the steps of the method disclosed in conjunction with the embodiments in the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.

Alternatively, the software modules may be located in random access memory, flash memory, read only memory, programmable read only memory, electrically erasable programmable memory, registers, and the like, as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps in the above method embodiments in combination with hardware thereof.

For example, in the embodiment of the present application, the processing unit 610 shown in fig. 10 may be implemented by a processor, and the communication unit 620 shown in fig. 10 may be implemented by a transceiver.

Fig. 11 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application. The communication device 700 shown in fig. 11 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 11, the communication device 700 may also include a memory 720. The memory 720 may be used to store instructions and codes, instructions, etc. that may be executed by the processor 710. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.

Optionally, as shown in fig. 11, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 730 may include a transmitter and a receiver, among others. The transceiver 730 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 700 may be a network device according to this embodiment, and the communication device 700 may implement a corresponding process implemented by the network device in each method according to this embodiment, which is not described herein again for brevity.

Optionally, the communication device 700 may be a first terminal device or a second terminal device in this embodiment, and the communication device 700 may implement a corresponding process implemented by the first terminal device or the second terminal device in each method in this embodiment, which is not described herein again for brevity.

It should be understood that the various components in the communication device 700 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

In addition, an embodiment of the present application further provides a chip, which may be an integrated circuit chip, and has signal processing capability, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiment of the present application.

Alternatively, the chip may be applied to various communication devices, so that the communication device mounted with the chip can execute the methods, steps and logic blocks disclosed in the embodiments of the present application.

Fig. 12 is a schematic structural diagram of a chip according to an embodiment of the present application.

The chip 800 shown in fig. 12 includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 12, chip 800 may further include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application. The memory 820 may be used to store instructions and codes, instructions, etc. that may be executed by the processor 810.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, the chip 800 may further include an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and specifically, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 800 may further include an output interface 840. The processor 810 can control the output interface 840 to communicate with other devices or chips, and in particular, can output information or data to other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc. It will also be appreciated that the various components in the chip 800 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

The processor may include, but is not limited to:

general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like.

The processor may be configured to implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, eprom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

The memory includes, but is not limited to:

volatile memory and/or non-volatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program. The computer readable storage medium stores one or more programs, the one or more programs comprising instructions, which when executed by a portable electronic device comprising a plurality of applications, enable the portable electronic device to perform the methods of the illustrated embodiments of methods 200-500.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the application also provides a computer program product comprising the computer program.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the application also provides a computer program. The computer program, when executed by a computer, enables the computer to perform the methods of the illustrated embodiments of methods 200-500.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

The embodiment of the present application further provides a communication system, where the communication system may include the first terminal device, the second terminal device, and the network device, which are not described herein again for brevity.

It should be noted that the term "system" and the like herein may also be referred to as "network management architecture" or "network system" and the like.

It is also to be understood that the terminology used in the embodiments of the present application and the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the present application.

For example, as used in the examples of this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

If implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways.

For example, the division of a unit or a module or a component in the above-described device embodiments is only one logical function division, and there may be other divisions in actual implementation, for example, a plurality of units or modules or components may be combined or may be integrated into another system, or some units or modules or components may be omitted, or not executed.

Also for example, the units/modules/components described above as separate/display components may or may not be physically separate, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the units/modules/components can be selected according to actual needs to achieve the purposes of the embodiments of the present application.

Finally, it should be noted that the above shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present application, and all the changes or substitutions should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

determining whether to establish a unicast link between the first terminal device and the second terminal device based on at least one of:

quality information of a channel between the first terminal device and the second terminal device, a type of the first terminal device, and a type of the second terminal device;

and when the unicast link is determined to be established, establishing or triggering the establishment of the unicast link.
The method of claim 1, wherein the quality information comprises at least one of:

a channel busy rate CBR measured by the first terminal equipment;

the CBR measured by the second terminal equipment;

reference Signal Received Power (RSRP) measured by the first terminal equipment;

the Reference Signal Received Quality (RSRQ) measured by the first terminal equipment;

the signal to noise and interference ratio (SINR) measured by the first terminal equipment;

a received signal strength indication, RSSI, measured by the first terminal device;

the RSRP measured by the second terminal device;

the RSRQ measured by the second terminal device;

SINR measured by the second terminal device; and

the RSSI measured by the second terminal device.
The method according to claim 1 or 2, characterized in that the type of the second terminal device comprises an access class of the second terminal device.
The method according to any of claims 1 to 3, characterized in that the type of the first terminal device comprises an access class of the first terminal device.
The method according to any of claims 1 to 4, wherein the method is applied to the first terminal device and/or the second terminal device, wherein the first terminal device is configured to send first information to the second terminal device, and the first information is used to trigger establishment of the unicast link.
The method of claim 5, further comprising:

sending second information to a network device, the second information including at least one of the quality information, the type of the first terminal device, and the type of the second terminal device.
The method of claim 6, wherein the second information further comprises at least one of:

an address of the first terminal device;

an address of the second terminal device;

a quality of service, QoS, attribute; and

and (4) frequency points.
The method of claim 6 or 7, wherein the determining whether to establish the unicast link between the first terminal device and the second terminal device comprises:

receiving third information sent by the network device, wherein the third information is used for indicating whether the unicast link is allowed to be established or not;

and determining whether to establish the unicast link according to the third information.
The method of any of claims 5 to 8, wherein the determining whether to establish a unicast link between the first terminal device and the second terminal device comprises:

receiving an evaluation criterion sent by network equipment;

determining whether to establish the unicast link according to the evaluation criterion.
The method of claim 9, wherein the evaluation criteria corresponds to at least one of the following information:

a target terminal device;

a service type;

a quality of service, QoS, attribute; and

and (4) frequency points.
The method according to claim 9 or 10, wherein the evaluation criterion comprises at least one of the following information:

a channel quality condition that allows establishment of a unicast link;

channel quality conditions that do not allow establishment of unicast links;

the type of terminal device allowed to establish the unicast link; and

the type of terminal device that is not allowed to establish the unicast link.
The method of claim 11, wherein the channel quality condition comprises at least one of:

the value range of the channel busy rate CBR;

the value range of reference signal received power RSRP;

the range of Reference Signal Received Quality (RSRQ); and

the range of the signal-to-noise-and-interference ratio SINR.
The method according to any one of claims 5 to 12, further comprising:

receiving or transmitting a reference signal for measuring the channel quality.
The method of claim 13, further comprising:

receiving or transmitting a measurement result including the channel quality measured based on the reference signal.
The method according to any one of claims 5 to 14, further comprising:

receiving or sending fourth information, wherein the fourth information is information for measuring the channel quality.
The method of claim 15, wherein the fourth information further comprises at least one of:

a channel busy rate CBR for the first terminal device;

a channel busy rate CBR for the second terminal device;

a type of terminal device allowed to establish a unicast link with; and

the type of terminal device that is not allowed to establish the unicast link.
The method according to any of claims 5 to 16, wherein the method is applied to the first terminal device;

the establishing or triggering establishment of the unicast link includes:

sending the first information to the second terminal equipment;

and receiving response information of the first information sent by the second terminal equipment.
The method of claim 17, further comprising:

and sending fifth information to the second terminal equipment, wherein the fifth information is used for indicating whether the unicast link is allowed to be established or not.
The method according to any of claims 5 to 16, wherein the method is applied to the second terminal device;

the establishing or triggering establishment of the unicast link includes:

receiving the first information sent by the first terminal equipment;

and sending response information of the first information to the first terminal equipment.
The method according to any of claims 1 to 19, characterized in that the first terminal device and/or the second terminal device is a terminal device in a connected state.
The method according to any of claims 1 to 19, characterized in that the first terminal device and/or the second terminal device is a terminal device in an inactive state.
The method according to any of claims 1 to 19, wherein the first terminal device and/or the second terminal device is a terminal device in an idle state.
The method according to any of claims 1 to 4, wherein the method is adapted for a network device.
The method of claim 23, further comprising:

receiving second information, the second information comprising at least one of the quality information, a type of the first terminal device, and a type of the second terminal device.
The method of claim 24, wherein the second information further comprises at least one of:

an address of the first terminal device;

an address of the second terminal device;

a quality of service, QoS, attribute; and

and (4) frequency points.
The method of claim 24 or 25, further comprising:

and sending third information, wherein the third information is used for indicating whether the unicast link is allowed to be established or not.
The method of any one of claims 23 to 26, further comprising:

sending an evaluation criterion for determining whether to establish the unicast link.
The method of claim 27, wherein the evaluation criteria corresponds to at least one of the following information:

a target terminal device;

a service type;

a quality of service, QoS, attribute; and

and (4) frequency points.
The method according to claim 27 or 28, wherein the evaluation criterion comprises at least one of the following information:

a channel quality condition that allows establishment of a unicast link;

channel quality conditions that do not allow establishment of unicast links;

the type of terminal device allowed to establish the unicast link; and

the type of terminal device that is not allowed to establish the unicast link.
The method of claim 29, wherein the channel quality condition comprises at least one of:

the value range of the channel busy rate CBR;

the value range of reference signal received power RSRP;

the range of Reference Signal Received Quality (RSRQ); and

the range of the signal-to-noise-and-interference ratio SINR.
A communication device, comprising:

a processing unit configured to determine whether to establish a unicast link between a first terminal device and a second terminal device according to at least one of the following information:

quality information of a channel between the first terminal device and the second terminal device, a type of the first terminal device, and a type of the second terminal device;

and the communication unit is used for establishing or triggering the establishment of the unicast link when the establishment of the unicast link is determined.
The communications device of claim 31, wherein the quality information comprises at least one of:

a channel busy rate CBR measured by the first terminal equipment;

the CBR measured by the second terminal equipment;

reference Signal Received Power (RSRP) measured by the first terminal equipment;

the Reference Signal Received Quality (RSRQ) measured by the first terminal equipment;

the signal to noise and interference ratio (SINR) measured by the first terminal equipment;

a received signal strength indication, RSSI, measured by the first terminal device;

the RSRP measured by the second terminal device;

the RSRQ measured by the second terminal device;

SINR measured by the second terminal device; and

the RSSI measured by the second terminal device.
The communication device according to claim 31 or 32, wherein the type of the second terminal device comprises an access class of the second terminal device.
The communication device according to any of claims 31 to 33, wherein the type of the first terminal device comprises an access class of the first terminal device.
The communication device according to any of claims 31 to 34, wherein the communication device is the first terminal device and/or the second terminal device, wherein the first terminal device is configured to send first information to the second terminal device, and the first information is used to trigger establishment of the unicast link.
The communications device of claim 35, wherein the communications unit is further configured to:

sending second information to a network device, the second information including at least one of the quality information, the type of the first terminal device, and the type of the second terminal device.
The communications device of claim 36, wherein the second information further comprises at least one of:

an address of the first terminal device;

an address of the second terminal device;

a quality of service, QoS, attribute; and

and (4) frequency points.
The communication device according to claim 36 or 37, wherein the communication unit is further configured to:

receiving third information sent by the network device, wherein the third information is used for indicating whether the unicast link is allowed to be established or not; the processing unit is specifically configured to:

and determining whether to establish the unicast link according to the third information.
The communication device of any of claims 35 to 38, wherein the communication unit is further configured to:

receiving an evaluation criterion sent by network equipment; the processing unit is specifically configured to:

determining whether to establish the unicast link according to the evaluation criterion.
The communications device of claim 39, wherein said evaluation criteria corresponds to at least one of the following information:

a target terminal device;

a service type;

a quality of service, QoS, attribute; and

and (4) frequency points.
A communication device according to claim 39 or 40, wherein the evaluation criterion comprises at least one of the following information:

a channel quality condition that allows establishment of a unicast link;

channel quality conditions that do not allow establishment of unicast links;

the type of terminal device allowed to establish the unicast link; and

the type of terminal device that is not allowed to establish the unicast link.
The communications device of claim 41, wherein said channel quality condition comprises at least one of:

the value range of the channel busy rate CBR;

the value range of reference signal received power RSRP;

the range of Reference Signal Received Quality (RSRQ); and

the range of the signal-to-noise-and-interference ratio SINR.
The communication device of any of claims 35 to 42, wherein the communication unit is further configured to:

receiving or transmitting a reference signal for measuring the channel quality.
The communications device of claim 43, wherein said communications unit is further configured to:

receiving or transmitting a measurement result including the channel quality measured based on the reference signal.
The communication device of any of claims 35 to 44, wherein the communication unit is further configured to:

receiving or sending fourth information, wherein the fourth information is information for measuring the channel quality.
The communications device of claim 45, wherein the fourth information further comprises at least one of:

a channel busy rate CBR for the first terminal device;

a channel busy rate CBR for the second terminal device;

a type of terminal device allowed to establish a unicast link with; and

the type of terminal device that is not allowed to establish the unicast link.
The communication device according to any of claims 35 to 46, wherein the communication device is the first terminal device;

the communication unit is specifically configured to:

sending the first information to the second terminal equipment;

and receiving response information of the first information sent by the second terminal equipment.
The communications device of claim 47, wherein said communications unit is further configured to:

and sending fifth information to the second terminal equipment, wherein the fifth information is used for indicating whether the unicast link is allowed to be established or not.
The communication device according to any of claims 35 to 46, wherein the communication device is the second terminal device;

the communication unit is specifically configured to:

receiving the first information sent by the first terminal equipment;

and sending response information of the first information to the first terminal equipment.
The communication device according to any of claims 31 to 49, wherein the first terminal device and/or the second terminal device is a terminal device in a connected state.
A communication device according to any of claims 31 to 49, wherein the first terminal device and/or the second terminal device is a terminal device in an inactive state.
The communication device according to any of claims 31 to 49, wherein the first terminal device and/or the second terminal device is a terminal device in an idle state.
The communication device of any of claims 31-34, wherein the communication device is a network device.
The communications device of claim 53, wherein said communications unit is further configured to:

receiving second information, the second information comprising at least one of the quality information, a type of the first terminal device, and a type of the second terminal device.
The communications device of claim 54, wherein said second information further comprises at least one of:

an address of the first terminal device;

an address of the second terminal device;

a quality of service, QoS, attribute; and

and (4) frequency points.
The communication device of claim 54 or 55, wherein the communication unit is further configured to:

and sending third information, wherein the third information is used for indicating whether the unicast link is allowed to be established or not.
The communication device of any of claims 53 to 56, wherein the communication unit is further configured to:

sending an evaluation criterion for determining whether to establish the unicast link.
The communications device of claim 57, wherein said evaluation criteria corresponds to at least one of the following information:

a target terminal device;

a service type;

a quality of service, QoS, attribute; and

and (4) frequency points.
A communication device according to claim 57 or 58, wherein the evaluation criterion comprises at least one of the following information:

a channel quality condition that allows establishment of a unicast link;

channel quality conditions that do not allow establishment of unicast links;

the type of terminal device allowed to establish the unicast link; and

the type of terminal device that is not allowed to establish the unicast link.
The communications device of claim 59, wherein said channel quality condition comprises at least one of:

the value range of the channel busy rate CBR;

the value range of reference signal received power RSRP;

the range of Reference Signal Received Quality (RSRQ); and

the range of the signal-to-noise-and-interference ratio SINR.
A communication device, comprising:

a processor, a memory for storing a computer program, and a transceiver, the processor for invoking and executing the computer program stored in the memory to perform the method of any one of claims 1 to 30.
A chip, comprising:

a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 30.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 30.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 30.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 30.