WO2021083156A1

WO2021083156A1 - Direct communication method and device

Info

Publication number: WO2021083156A1
Application number: PCT/CN2020/124091
Authority: WO
Inventors: 邓强; 侯云静
Original assignee: 大唐移动通信设备有限公司
Priority date: 2019-10-29
Filing date: 2020-10-27
Publication date: 2021-05-06
Also published as: CN112752239B; CN112752239A

Abstract

Disclosed in the present application are a direct communication method and device, for use in implementing direct communication by using less signaling. The method comprises: a terminal device sends a direct communication request message to a relay device, the direct communication request message comprising an application layer identifier of the terminal device and service information supported by the relay device; the terminal device receives a direct communication response message returned by the relay device, the direct communication response message comprising an application layer identifier of the relay device and the application layer identifier of the terminal device; and the terminal device establishes a direct communication connection with the relay device.

Description

Direct connection communication method and equipment

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on October 29, 2019, the application number is 201911040368.X, and the application name is "a direct communication method and equipment", the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the field of mobile communication technology, and in particular to a direct communication method and device.

Background technique

Device-to-Device (D2D) technology, that is, two terminal devices directly communicate without going through a network device, is one of the technologies to improve network capacity and spectrum efficiency.

A way of D2D communication, for example, D2D communication introduces a relay technology, that is, a terminal device at a remote end (that is, a terminal device outside the coverage of the network device) establishes a connection with the network device through the relay device. The relay device can be directly connected to the network device, and the terminal device at the remote end can be connected to the relay device, so that the terminal device at the remote end can be connected to the network device.

There is at least one relay device, and the connection between a remote terminal device and a relay device includes two processes, and the two processes are a discovery process and a connection process respectively. The discovery process refers to the process in which the terminal device determines the relay device to be connected, and the connection process refers to the process in which the terminal device connects with the discovered relay device.

The current discovery process includes the first method and the second method. The first method is that the terminal device broadcasts a relay discovery message (Relay Discovery Announcement) message, and the relay discovery message includes the proximity service relay user equipment (User Equipment, UE) identification number (Identity, ID) (ProSe Relay UE ID) and other information, the relay device that matches the ID among multiple relay devices sends the relay discovery message to the terminal device Response message, so that the terminal device can discover the relay device; the second way is that the terminal device broadcasts a relay discovery request (Relay Discovery Policy) message. The relay discovery request message includes the service information supported by the relay device, such as a relay service. Code (Relay Service Code), the relay device matching the Relay Service Code sends a response message of the relay discovery request message to the terminal device, so that the terminal device can discover the relay device.

The terminal device discovers the relay device and requests to establish a unicast connection with the relay device. It can be seen that at present, the establishment of a connection between a terminal device and a relay device requires a discovery process and a unicast connection establishment process, and more signaling is used.

Summary of the invention

The embodiments of the present application provide a method and device for direct connection communication, which are used to implement direct connection communication using less signaling.

In the first aspect, an embodiment of the present application provides a method for direct communication, which includes:

The terminal device sends a direct connection communication request message to the relay device, where the direct connection communication request message includes the application layer identifier of the terminal device and service information supported by the relay device;

Receiving, by the terminal device, a direct communication response message returned by the relay device, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device;

The terminal device establishes a direct communication connection with the relay device.

Optionally, the direct communication request message further includes the link layer identifier of the terminal device and the first link layer identifier of the relay device, and the first link layer identifier of the relay device is based on The service information supported by the relay device is determined.

Optionally, the direct communication response message further includes the link layer identifier of the terminal device and the second link layer identifier of the relay device, and the second link layer identifier of the relay device is based on The application layer identifier of the relay device is determined.

Optionally, the direct communication request message further includes the application layer identifier of the relay device.

Optionally, the direct communication request message is a broadcast message, and the direct communication response message is a unicast message.

Optionally, the method further includes:

The terminal device receives a policy parameter sent by a network device, where the policy parameter includes service information supported by the relay device, service information supported by the relay device, and a first link layer identifier of the relay device The mapping relationship between.

In the second aspect, an embodiment of the present application provides a method for direct communication, the method including:

The relay device receives a direct communication request message from a terminal device, where the direct communication request message includes the application layer identifier of the terminal device and service information supported by the relay device;

The relay device returns a direct communication response message to the terminal device, and the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device.

Optionally, the method further includes:

The relay device receives policy parameters sent by the network device, and the policy parameters include service information supported by the relay device, service information supported by the relay device, and the first link layer of the relay device The mapping relationship between the identities.

Optionally, the method further includes:

Determining whether the relay device supports the service information supported by the relay device in the direct communication request message;

The relay device determines that it supports the service information supported by the relay device in the direct communication request message, and sends the direct communication response message to the terminal device.

Optionally, the method further includes:

Determining whether the relay device supports the application layer identifier of the relay device in the direct communication request message;

The relay device determines that it supports the application layer identifier of the relay device in the direct communication request message, and sends the direct communication response message to the terminal device.

In a third aspect, an embodiment of the present application provides a terminal device, which includes:

A sending module, configured to send a direct communication request message to a relay device, where the direct communication request message includes the application layer identifier of the terminal device and service information supported by the relay device;

A receiving module, configured to receive a direct communication response message returned by the relay device, the direct communication response message including the application layer identification of the relay device and the application layer identification of the terminal device;

The processing module is used to establish a direct communication connection with the relay device.

Optionally, the receiving module is also used for:

Receive a policy parameter sent by a network device, where the policy parameter includes service information supported by the relay device, and a mapping between the service information supported by the relay device and the first link layer identifier of the relay device relationship.

In a fourth aspect, an embodiment of the present application provides a relay device, and the relay device includes:

A receiving module, configured to receive a direct communication request message from a terminal device, where the direct communication request message includes an application layer identifier of the terminal device and service information supported by the relay device;

The sending module is configured to return a direct communication response message to the terminal device, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device.

Optionally, the receiving module is also used for:

Optionally, the relay device further includes a processing module; wherein,

The processing module is used to determine whether to support the service information supported by the relay device in the direct communication request message;

When it is determined that the service information supported by the relay device in the direct communication request message is supported, the sending module is controlled to send the direct communication response message to the terminal device.

Optionally, the processing module is also used to:

Determining whether to support the application layer identifier of the relay device in the direct communication request message;

When it is determined that the application layer identifier of the relay device in the direct communication request message is supported, the sending module is controlled to send the direct communication response message to the terminal device.

In a fifth aspect, an embodiment of the present application provides a terminal device, which includes:

Memory, used to store instructions;

The processor is configured to read instructions in the memory and execute the following process:

The control transceiver sends a direct connection communication request message to the relay device, the direct connection communication request message includes the application layer identifier of the terminal device and the service information supported by the relay device, and receives the information returned by the relay device. A direct communication response message, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device;

Establish a direct communication connection with the relay device.

Optionally, the transceiver is also used for:

In a sixth aspect, an embodiment of the present application provides a relay device, and the relay device includes:

Memory, used to store instructions;

The control transceiver receives a direct connection communication request message from a terminal device, the direct connection communication request message includes the application layer identifier of the terminal device and the service information supported by the relay device, and returns the direct connection to the terminal device A communication response message, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device.

Optionally, the transceiver is also used for:

Optionally, the processor is further configured to:

Determining whether to support the service information supported by the relay device in the direct communication request message;

When the processing module determines to support the service information supported by the relay device in the direct communication request message, control the transceiver to send the direct communication response message to the terminal device.

Optionally, the processor is further configured to:

When the processing module determines to support the application layer identifier of the relay device in the direct communication request message, control the transceiver to send the direct communication response message to the terminal device.

In a seventh aspect, the embodiments of the present application provide a computer-readable storage medium that stores computer instructions that, when the computer instructions are run on a computer, cause the computer to perform operations such as the first aspect or the first aspect. The method of any one of the two aspects.

In the embodiment of the present application, the terminal device directly sends a direct connection communication request message to the relay device, and the direct connection communication request message includes service information supported by the relay device, so that the relay device can determine itself after receiving the instruction communication request message Whether the service information is supported, if so, the relay device feeds back a direct connection communication response message to the terminal device to inform the terminal device that a connection can be established. That is to say, in the direct connection communication method provided by the embodiment of the present application, the process of connecting the terminal device to the relay device includes the process of discovering the relay device by the terminal device. Compared with the current connection between the terminal device and the relay device, the discovery process and the establishment order are required. As far as the broadcast connection process is concerned, it is obvious that less signaling is used, which saves signaling.

Description of the drawings

FIG. 1 is a schematic flowchart of a direct communication method provided by an embodiment of the present application;

2 is a schematic flowchart of an example of a direct communication method provided by an embodiment of this application;

FIG. 3 is a schematic flowchart of an example of a direct communication method provided by an embodiment of this application;

4 is a schematic flowchart of an example of configuring policy parameters of a terminal device by a network device according to an embodiment of the application;

FIG. 5 is a schematic structural diagram of a terminal device provided by an embodiment of this application;

FIG. 6 is a schematic diagram of another structure of a terminal device provided by an embodiment of the application;

FIG. 7 is a schematic structural diagram of a relay device provided by an embodiment of the application;

FIG. 8 is a schematic diagram of another structure of a relay device provided by an embodiment of the application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application.

At present, to establish a connection between a terminal device and a relay device, a discovery process and a unicast connection process are required, and a lot of signaling is used.

In view of this, the embodiment of the present application provides a direct connection communication method. In this method, the process of the terminal device connecting to the relay device includes the process of the terminal device discovering the relay device. Compared with the current terminal device and the relay device establishing a connection In terms of the discovery process and the establishment of a unicast connection process, it is obvious that less signaling is used, which saves signaling.

The following describes the technical solutions provided by the embodiments of the present application in conjunction with the accompanying drawings.

Referring to FIG. 1, an embodiment of the present application provides a direct communication method, and the process of the method is described as follows. Since the direct communication method involves the interaction process between the relay device and the terminal device, in the following process description, the process performed by the relay device and the terminal device will be described together.

S101. The terminal device sends a direct connection communication request message to the relay device, where the direct connection communication request message includes the application layer identification information of the terminal device and the service information supported by the relay device.

S102. The relay device sends a direct communication response message to the terminal device, where the direct communication response message includes the application layer identification of the relay device and the application layer identification of the terminal device.

S103. The terminal device establishes a direct communication connection with the relay device.

In the embodiment of the present application, there are multiple relay devices. If a terminal device needs to be connected to a certain relay device, the relay device that needs to be connected can be determined first.

As a possible implementation manner, in S101, the terminal device may broadcast a direct connection communication request message, and the direct connection communication request message may carry service information supported by the relay device. Some or all of the relay devices in the multiple relay devices receive the direct communication request message, for example, it can be determined whether the service information included in the direct communication request message is service information that it can support, so as to determine whether it is a terminal device. The relay device that needs to be connected.

In this way, the network device can configure policy parameters for each relay device, for example, it can include at least one of the application layer identification of the relay device, the service information supported by the relay device, and the link layer identification of the relay device. Of course, the policy parameters can also include other possible information, such as service quality information. Wherein, the application layer identifier of the relay device can also be considered as application layer identification information. Illustratively, it can be user information, for example, it can be expressed as "Relay UE User Info". The service information supported by the relay device can be considered as the service code supported by the relay device, for example, it can be expressed as "Relay Service Code". The link layer identifier of the relay device can be expressed as "Relay UE Layer-2 ID", for example. It should be noted that in the embodiment of the present application, the application layer identifier of the relay device may also be considered as information indicating the application layer identifier of the relay device, for example, it may be referred to as the application layer identification information of the relay device. Similarly, the link layer identifier of the relay device may also be considered as information indicating the link layer identifier of the relay device, for example, it may be referred to as the link layer identification information of the relay device.

Each relay device receives the direct communication request message, and can determine whether it supports the service information included in the direct communication request message. If a certain relay device determines that the service information it supports is consistent with the service information in the received direct communication request message, then the relay device determines to support the service information in the received direct communication request message, that is, the relay A device is a device to which a terminal device needs to be directly connected. At this time, the relay device may feed back a response message for the direct communication request message to the terminal device, which may also be referred to as a direct communication response message, and the direct communication response message may be regarded as a confirmation message. On the contrary, if a certain relay device determines that the service information it supports is inconsistent with the service information in the received direct communication request message, then the relay device determines that it is not the device that the terminal device needs to be directly connected to. At this time, the relay device The direct communication response message fed back to the terminal device may be regarded as a rejection message. In a possible implementation manner, the confirmation message and the rejection message are relative, and the direct communication response message may carry indication information. The different content indicated by the indication information indicates that it is a confirmation message or a rejection message.

The multiple relay devices may include service information supported by at least one relay device that is consistent with the service information in the direct communication request. For each relay device that may receive direct communication request messages from multiple terminal devices, then the relay device feeds back the direct communication response message to the terminal device, and it needs to be clear to which terminal device it is, to avoid that the terminal device does not receive it. Or wrong connection direct communication response message.

Therefore, in some embodiments, the direct communication request message may also include the application layer identification of the terminal device. Therefore, the relay device can determine the corresponding terminal device according to the direct communication request message. Similarly, for a terminal device, it may receive direct communication feedback information from multiple relay devices, so the terminal device also needs to determine which relay device is needed. For this reason, the direct communication sent by the relay device The response message may include the application layer identification of the relay device and the application layer identification of the terminal device. In this way, each terminal device receives the direct communication response message according to the application layer identifier of the terminal device in the direct communication response message, or receives multiple direct communication response messages and only parses the direct communication response message corresponding to its own application layer identifier. .

In some embodiments, the direct communication request message may also include the link layer identifier of the terminal device and the link layer identifier of the relay device.

In this implementation manner, the network device can configure the terminal device with the policy parameter of each relay device, that is, the policy parameter of each relay device can be configured on the terminal device. Wherein, the policy parameter includes not only the service information supported by the relay device, but also the mapping relationship between the service information supported by the relay device and the link layer identification information of the relay device. Therefore, the terminal device can determine the link layer identifier of the relay device that needs to be directly connected to the service information supported by the relay device.

Correspondingly, the direct communication response message may also include the link layer identifier of the terminal device and the link layer identifier of the relay device. For easy distinction, the link layer identifier of the relay device in the direct communication request message is referred to as the first link identifier, and the link layer identifier of the relay device in the direct communication response message is referred to as the second link. Road logo. In some embodiments, the relay device may determine the second link layer identifier of the relay device according to the application layer identifier of the relay device.

In some embodiments, the direct communication request message may also include the application layer identification of the relay device. In this case, the relay device can determine whether its own application layer identifier is consistent with the application layer identifier of the relay device in the received direct communication request message, so as to determine whether it is a device to which the terminal device needs to be directly connected.

The terminal device receives a direct communication response message from at least one relay device among the plurality of relay devices, and may select one relay device from the at least one relay device to establish a direct communication connection.

As another possible implementation manner, in S101, the terminal device can determine the relay device to be directly connected, for example, the first relay device among multiple relay devices, so that it can send a direct message to the first relay device. Connect the communication request message. The direct communication request message may include the application layer identifier of the terminal device and service information supported by the first relay device.

The first relay device receives the direct communication request message, and can determine whether the service information supported by itself is consistent with the service information supported by the first relay device included in the direct communication request message. If the first relay device determines that the service information it supports is consistent with the service information supported by the first relay device included in the direct communication request message, it may send a direct communication response message to the first relay device. The response message represents the direct communication confirmation message. If the first relay device determines that the service information it supports is inconsistent with the service information supported by the first relay device included in the direct communication request message, it may send a direct communication response indicating rejection of direct communication to the first relay device news.

Similar to the foregoing one possible implementation, the direct communication request message may also include the application layer identifier of the terminal device, the link layer identifier of the terminal device, and the first link layer identifier of the relay device, and the application layer of the relay device. At least one type of information or a combination of multiple types of information in the identifier. When the direct communication request message includes the application layer identifier of the relay device, the first relay device receiving the direct communication request message from the terminal device may determine whether it is a terminal device according to the application layer identifier of the relay device included in the direct communication request message The equipment that needs to be connected. That is, if the first relay device determines that it supports the application layer identification of the relay device in the direct communication request message, the first relay device sends a direct communication response message indicating confirmation to the terminal device. On the contrary, if the first relay device determines that it does not support the application layer identification of the relay device in the direct communication request message, the first relay device sends a direct communication response message indicating rejection to the terminal device.

In order to facilitate the understanding of the solutions provided in the embodiments of the present application, specific examples are used to illustrate the direct communication method provided in the embodiments of the present application.

Please refer to Figure 2 for another example of the direct communication method provided in this embodiment of the application. This example takes the network device for the terminal device to configure the policy parameters of each relay device as an example, that is, the terminal device provides the information of each relay device. Take the strategy parameter as an example, and the process of this example is described as follows.

S201: The terminal device determines the first relay device that needs to be directly connected.

The terminal device provides the policy parameters of each relay device, then the terminal device can determine which relay device needs to be directly connected, for example, the first relay device.

S202: The terminal device sends a direct connection communication request message to the first relay device, where the direct connection communication request message includes service information supported by the relay device and an application layer identifier of the terminal device.

The terminal device may send a direct communication request message to the first relay device, and the direct communication request message may include service information supported by the first relay device, so that the first relay device can determine according to the direct communication request message Whether the service information of the relay device in the direct connection communication request message is supported by itself, and then it is determined whether the terminal device needs to be directly connected to the relay device. Of course, the terminal device may also broadcast the direct connection communication request message. In FIG. 2, the terminal device broadcasts the direct connection communication request message. There are three relay devices, and the relay device 1 is the first relay device as an example.

In a possible implementation, the direct communication request message may also include the link layer identifier of the terminal device (for example, "Remote UE Layer-2 ID") and the link layer identifier of the relay device (for example, "Relay UE Layer-2 ID” means).

For example, the source address of the direct communication request message is Remote UE Layer-2 ID, and the destination address of the direct communication request message is Relay UE Layer-2 ID.

In some embodiments, the direct communication request message may also include the application layer identification of the relay device, service quality parameters, and so on.

S203. The first relay device sends a direct communication response message to the terminal device, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device, so that the terminal device receives the direct communication response message. Establish a direct communication connection with the first relay device.

If the first relay device determines that it supports the service information of the relay device in the direct communication request message, the first relay device may send a direct communication response message to the terminal device. Specifically, the first relay device may determine the identity information of the terminal device according to the application layer identifier of the terminal device in the direct communication request message, so as to send a direct communication response message to the terminal device.

In some embodiments, the direct communication request message includes the link layer identifier of the terminal device and the link layer identifier of the relay device, and the direct communication response message may include the link layer identifier of the relay device and the link layer of the terminal device. Road layer identification. For example, the source address of the direct communication request message is Remote UE Layer-2 ID, and the destination address of the direct communication request message is Relay UE Layer-2 ID. Correspondingly, the source address of the direct communication response message is Relay UE Layer-2. 2 ID, the destination address of the direct communication request message is Remote UE Layer-2 ID.

In some embodiments, the direct communication request message may further include one or a combination of the application layer identifier of the relay device, the service information of the relay device, or the service quality parameter.

Please refer to FIG. 3, which is an example of the direct communication method provided by the embodiment of this application. This example takes the network device configuring policy parameters for each relay device as an example, that is, the terminal device does not provide the policy parameters of each relay device. For example, the process of this example is described as follows.

S301. The terminal device determines the service information supported by the relay device.

The terminal device does not know which relay devices need to be directly connected, and the terminal device needs to confirm the relay devices that can be directly connected. Exemplarily, the terminal device may search for the relay device that needs to be directly connected according to the service information of the relay device that needs to be directly connected. In this case, the terminal device provides the policy parameters of each relay device, so that the service information supported by each relay device can be obtained, and the required service information can be selected from the service information to find the corresponding relay device according to the service information.

S302. The terminal device broadcasts a direct connection communication request message, where the direct connection communication request message includes service information supported by the relay device and an application layer identifier of the terminal device.

The terminal device may broadcast a direct communication request message, which may include service information supported by the relay device, so that the relay device that receives the direct communication request message can determine the relay in the direct communication request message Whether the service information of the device is supported by itself, and then determine whether the terminal device needs to be directly connected to the relay device.

Further, the direct communication request message may also include the link layer identifier of the terminal device (for example, "Remote UE Layer-2 ID") and the link layer identifier of the relay device (for example, "Relay UE Layer-2 ID"). ID" means). For example, the source address of the direct communication request message is Remote UE Layer-2 ID, and the destination address of the direct communication request message is Relay UE Layer-2 ID.

S303. At least one relay device sends a direct communication response message to the terminal device, where the direct communication response message includes the application layer identification of the relay device and the application layer identification of the terminal device.

Multiple relay devices receive the direct communication request message, and can determine whether the service information of the relay device in the direct communication request message is supported by themselves. Figure 3 takes multiple relay devices as three relay devices, and the three relay devices are respectively relay device 1, relay device 2, and relay device 3 as an example. If at least one relay device among the plurality of relay devices determines to support the service information of the relay device in the direct communication request message, then the at least one relay device may respectively send a direct communication response message to the terminal device. Specifically, at least one relay device may determine the identity information of the terminal device according to the application layer identifier of the terminal device in the direct communication request message, so as to send a direct communication response message to the terminal device. Fig. 3 takes as an example that two of the three relay devices are relay devices to which the terminal device needs to be directly connected.

S304. The terminal device selects the first relay device from the at least one relay device to establish a direct communication connection.

The terminal device can arbitrarily select a relay device from at least one relay device to establish a direct communication connection, or according to preset rules, select a relay device arbitrarily from at least one relay device to establish a direct communication connection. The application examples are not limited.

It can be seen from Figures 2 and 3 that in the direct connection communication method provided by the embodiments of the present application, the process of connecting a terminal device to a relay device includes a process in which the terminal device discovers the relay device. Compared with the current connection between the terminal device and the relay device In terms of the discovery process and the establishment of a unicast connection process, it is obvious that less signaling is used, which saves signaling.

Refer to FIG. 4, which is an example of the network-side device provided in this embodiment of the present application providing a terminal device with a policy parameter of a relay device. The network side device may include access and mobility management functions (Access and Mobility Management FunctIon, AMF) and policy control functions (Policy Control Function, PCF). The flow of this example is described below.

S401. The user equipment (UE) sends a registration request (Registration Request) message to the AMF, where the message may include a terminal device policy container (UE Policy Container). The Registration Request message can be used to request the PCF to provide ProSe (ProSe) policy information. At the same time, the UE may also indicate to the PCF that the UE is a terminal device (Remote UE) or a relay device (Relay UE).

S402. The AMF returns a registration response (Registration Accept) message to the UE after completing the Registration process.

S403. The AMF sends a request message to the PCF. The request message includes first indication information and second indication information. The first indication information is used to indicate the ProSe policy, and the second indication information is used to indicate Remote UE or Relay UE.

S404. The PCF returns a response message to the AMF.

S405. The PCF sends a transmission message to the AMF. The transmission message includes the UE Policy Container, and the UE Policy Container is used to provide ProSe policy parameters to the UE. It should be noted that the UE Policy Container here has the same name as the UE Policy Container in S401, but the content is different. The UE Policy Container is used to exchange information between the UE and the PCF, and is transparent to the AMF. The UE Policy Container sent by the UE to the PCF contains the information the UE wants to request and UE capability information, such as Remote UE/Relay UE, and the container sent by the PCF to the UE contains specific policy parameter information, such as relay service code. The UE Policy Container carried in the transmission message sent by the PCF to the AMF indicates the ProSe policy parameter. For Remote UE, ProSe policy parameters include Remote UE User Info, Relay UE User Info, Relay UE Layer-2 ID, Relay Service Code, QoS parameters, Relay Service Code and target Layer-2 ID mapping relationship. For Relay UE, ProSe policy parameters include Relay UE User Info, Relay Service Code, QoS parameters, Relay Service Code, and Layer-2 ID mapping relationships.

S406. The AMF sends the ProSe policy parameter to the device (UE).

S407: The UE returns a device (UE) policy delivery result to the AMF, and the policy delivery result indicates the information included in the UE Policy container in S405.

S408. The AMF returns a device (UE) policy delivery result message to the PCF, so that the device (UE) can provide corresponding policy parameters.

As above, the direct connection communication method provided by the embodiment of the present application is introduced from the perspective of the interaction between the terminal device and the relay device. The following describes the device provided by the embodiment of the present application with reference to the accompanying drawings of the specification.

Referring to FIG. 5, based on the same inventive concept, an embodiment of the present application further provides a terminal device. The terminal device includes a memory 501, a processor 502, and a transceiver 503. Among them, the memory 501 and the transceiver 503 may be connected to the processor 502 through a bus interface (as shown in FIG. 5 as an example), or may also be connected to the processor 502 through a special connection line. The transceiver 503 is used to send and receive information under the control of the processor 502. Among them, the memory 501 may be used to store programs. The processor 502 may be used to read the program in the memory 501 and execute the following process:

Send a direct connection communication request message to the relay device, where the direct connection communication request message includes the application layer identifier of the terminal device and the service information supported by the relay device;

Receiving a direct communication response message returned by the relay device, where the direct communication response message includes the application layer identification of the relay device and the application layer identification of the terminal device;

Establish a direct communication connection with the relay device.

Optionally, the direct communication request message further includes the link layer identifier of the terminal device and the first link layer identifier of the relay device, and the first link layer identifier of the relay device is determined according to the service information supported by the relay device. of.

Optionally, the direct communication response message further includes the link layer identification of the terminal device and the second link layer identification of the relay device, and the second link layer identification of the relay device is determined according to the application layer identification of the relay device of.

Optionally, the transceiver 503 can also be used for:

The policy parameter sent by the network device is received, and the policy parameter includes the service information supported by the relay device, and the mapping relationship between the service information supported by the relay device and the first link layer identification information of the relay device.

Wherein, in FIG. 5, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 502 and various circuits of the memory represented by the memory 501 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 503 may be a plurality of elements, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on the transmission medium. The processor 502 is responsible for managing the bus architecture and general processing, and the memory 501 can store data used by the processor 502 when performing operations.

Referring to FIG. 6, based on the same inventive concept, an embodiment of the present application provides a terminal device. The terminal device includes a sending module 601, a receiving module 602, and a processing module 603. The sending module 601 can be used to send a direct connection to a relay device. A communication request message, where the direct communication request message includes the application layer identifier of the terminal device and the service information supported by the relay device; the receiving module 602 may be used to receive the direct communication response message returned by the relay device The direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device; the processing module 603 is configured to establish a direct communication connection with the relay device.

Optionally, the sending module 601 can also be used for:

The physical devices of the sending module 601, the receiving module 602, and the processing module 603 in the terminal device may correspond to the processor 502 or the transceiver 503 in FIG. 5, and the terminal device may be used to execute the method provided in the embodiment of the present application. For the functions that can be implemented by the functional modules of the device, reference may be made to the description of the embodiments of the present application, which will not be repeated.

Referring to FIG. 7, based on the same inventive concept, an embodiment of the present application further provides a terminal device. The terminal device includes a memory 701, a processor 702, and a transceiver 703. Among them, the memory 701 and the transceiver 703 may be connected to the processor 702 through a bus interface (as shown in FIG. 7 as an example), or may also be connected to the processor 702 through a special connection line. The transceiver 703 is used to send and receive information under the control of the processor 702. Among them, the memory 701 may be used to store programs. The processor 702 may be used to read the program in the memory 701 and execute the following process:

The control transceiver 703 receives a direct connection communication request message from a terminal device, where the direct connection communication request message includes the application layer identifier of the terminal device and service information supported by the relay device;

The control transceiver 703 returns a direct communication response message to the terminal device, and the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device.

Optionally, the transceiver 703 can also be used for:

The policy parameter sent by the network device is received, and the policy parameter includes the service information supported by the relay device, and the mapping relationship between the service information supported by the relay device and the first link layer identifier of the relay device.

Optionally, the processor 702 may also be used to:

Determine whether to support the service information supported by the relay device in the direct communication request message;

When the processing module determines that it supports the service information supported by the relay device in the direct communication request message, it controls the transceiver to send a direct communication response message to the terminal device.

Optionally, the processor 702 may also be used to:

Determine whether to support the application layer identifier of the relay device in the direct communication request message;

When the processing module determines that it supports the application layer identifier of the relay device in the direct connection communication request message, it controls the transceiver to send the direct connection communication response message to the terminal device.

Wherein, in FIG. 7, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 702 and various circuits of the memory represented by the memory 701 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein. The bus interface provides the interface. The transceiver 703 may be a plurality of elements, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on the transmission medium. The processor 702 is responsible for managing the bus architecture and general processing, and the memory 701 can store data used by the processor 702 when performing operations.

Referring to FIG. 8, based on the same inventive concept, an embodiment of the present application provides a terminal device. The terminal device includes a receiving module 801, a sending module 802, and a processing module 803. Wherein, the receiving module 801 may be used to receive a direct communication request message from a terminal device, the direct communication request message including the application layer identifier of the terminal device and the service information supported by the relay device; the sending module 802 may It is used to return a direct communication response message to the terminal device, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device.

Optionally, the receiving module 801 can also be used for:

Optionally, the relay device further includes a processing module 803, and the processing module 803 may be used for:

When it is determined that the service information supported by the relay device in the direct communication request message is supported, the sending module 802 is controlled to send a direct communication response message to the terminal device.

Optionally, the processing module 803 may also be used for:

When it is determined that the application layer identifier of the relay device in the direct connection communication request message is supported, the control sending module 802 sends a direct connection communication response message to the terminal device.

The physical devices of the receiving module 801, the sending module 802, and the processing module 803 in the terminal device can correspond to the processor 702 or the transceiver 703 in FIG. 7, and the terminal device can be used to execute the method provided in the embodiment of the present application. For the functions that can be implemented by the functional modules of the device, reference may be made to the description of the embodiments of the present application, which will not be repeated.

Based on the same inventive concept, the embodiments of the present application provide a computer-readable storage medium that stores computer instructions, and when the computer instructions run on the computer, the computer executes the instructions provided in the embodiments of the present application. Methods.

In a specific implementation process, computer-readable storage media include: Universal Serial Bus flash drive (USB), mobile hard disk, read-only memory (Read-Only Memory, ROM), and random access memory (Universal Serial Bus flash drive, USB). Random Access Memory, RAM), magnetic disks or optical disks and other storage media that can store program codes.

In the embodiments of the present application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be Combined or can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.

The functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may also be an independent physical module.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, all or part of the technical solutions of the embodiments of the present application can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to enable a computer device, for example, A personal computer, a server, or a network device, etc., or a processor (processor) executes all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: universal serial bus flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical disks and other media that can store program codes.

As mentioned above, the above embodiments are only used to introduce the technical solutions of the present application in detail, but the descriptions of the above embodiments are only used to help understand the methods of the embodiments of the present application, and should not be construed as limiting the embodiments of the present application. Any changes or replacements that can be easily conceived by those skilled in the art should be covered by the protection scope of the embodiments of the present application.

Claims

A method of direct communication, characterized in that it comprises:

The terminal device sends a direct connection communication request message to the relay device, where the direct connection communication request message includes the application layer identifier of the terminal device and service information supported by the relay device;

Receiving, by the terminal device, a direct communication response message returned by the relay device, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device;

The terminal device establishes a direct communication connection with the relay device.
The method according to claim 1, wherein the direct communication request message further includes a link layer identifier of the terminal device and a first link layer identifier of the relay device, and the relay device The first link layer identifier of is determined according to the service information supported by the relay device.
The method according to claim 1, wherein the direct communication response message further includes a link layer identifier of the terminal device and a second link layer identifier of the relay device, and the relay device The second link layer identifier of is determined according to the application layer identifier of the relay device.
The method according to claim 1, wherein the direct communication request message further includes an application layer identifier of the relay device.
The method according to any one of claims 1 to 4, wherein the direct communication request message is a broadcast message, and the direct communication response message is a unicast message.
The method of claim 5, wherein the method further comprises:

The terminal device receives a policy parameter sent by a network device, where the policy parameter includes service information supported by the relay device, service information supported by the relay device, and a first link layer identifier of the relay device The mapping relationship between information.
A method of direct communication, characterized in that it comprises:

The relay device receives a direct communication request message from a terminal device, where the direct communication request message includes the application layer identifier of the terminal device and service information supported by the relay device;

The relay device returns a direct communication response message to the terminal device, and the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device.
The method according to claim 7, wherein the direct communication request message further includes a link layer identifier of the terminal device and a first link layer identifier of the relay device, and the relay device The first link layer identifier of is determined according to the service information supported by the relay device.
The method according to claim 7, wherein the direct communication response message further includes a link layer identifier of the terminal device and a second link layer identifier of the relay device, and the relay device The second link layer identifier of is determined according to the application layer identifier of the relay device.
8. The method according to claim 7, wherein the direct communication request message further includes an application layer identifier of the relay device.
The method according to any one of claims 7-10, wherein the direct communication request message is a broadcast message, and the direct communication response message is a unicast message.
The method of claim 11, wherein the method further comprises:

The relay device receives policy parameters sent by the network device, and the policy parameters include service information supported by the relay device, service information supported by the relay device, and the first link layer of the relay device The mapping relationship between the identities.
The method of claim 12, wherein the method further comprises:

Determining whether the relay device supports the service information supported by the relay device in the direct communication request message;

The relay device determines that it supports the service information supported by the relay device in the direct communication request message, and sends the direct communication response message to the terminal device.
The method of claim 13, wherein the method further comprises:

Determining whether the relay device supports the application layer identifier of the relay device in the direct communication request message;

The relay device determines that it supports the application layer identifier of the relay device in the direct communication request message, and sends the direct communication response message to the terminal device.
A terminal device, characterized in that it comprises:

A sending module, configured to send a direct communication request message to a relay device, where the direct communication request message includes the application layer identifier of the terminal device and service information supported by the relay device;

A receiving module, configured to receive a direct communication response message returned by the relay device, the direct communication response message including the application layer identification of the relay device and the application layer identification of the terminal device;

The processing module is used to establish a direct communication connection with the relay device.
The terminal device according to claim 15, wherein the direct communication request message further includes a link layer identifier of the terminal device and a first link layer identifier of the relay device, and the relay device The first link layer identifier of the device is determined according to the service information supported by the relay device.
The terminal device according to claim 15, wherein the direct communication response message further includes a link layer identifier of the terminal device and a second link layer identifier of the relay device, and the relay device The second link layer identifier of the device is determined according to the application layer identifier of the relay device.
The terminal device according to claim 15, wherein the direct communication request message further includes application layer information of the relay device.
The terminal device according to any one of claims 15-18, wherein the direct communication request message is a broadcast message, and the direct communication response message is a unicast message.
The terminal device according to claim 19, wherein the receiving module is further configured to:

Receive a policy parameter sent by a network device, where the policy parameter includes service information supported by the relay device, and a mapping between the service information supported by the relay device and the first link layer identifier of the relay device relationship.
A relay device, characterized in that it comprises:

A receiving module, configured to receive a direct communication request message from a terminal device, where the direct communication request message includes an application layer identifier of the terminal device and service information supported by the relay device;

The sending module is configured to return a direct communication response message to the terminal device, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device.
The relay device according to claim 21, wherein the direct communication request message further includes a link layer identifier of the terminal device and a first link layer identifier of the relay device, and the middle The first link layer identifier of the relay device is determined according to the service information supported by the relay device.
The relay device according to claim 21, wherein the direct communication response message further includes a link layer identifier of the terminal device and a second link layer identifier of the relay device, and the middle The second link layer identifier of the relay device is determined according to the application layer identifier of the relay device.
The relay device according to claim 21, wherein the direct communication request message further includes an application layer identifier of the relay device.
The relay device according to any one of claims 21-24, wherein the direct communication request message is a broadcast message, and the direct communication response message is a unicast message.
The relay device according to claim 25, wherein the receiving module is further configured to:

Receive a policy parameter sent by a network device, where the policy parameter includes service information supported by the relay device, and a mapping between the service information supported by the relay device and the first link layer identifier of the relay device relationship.
The relay device according to claim 26, wherein the relay device further comprises a processing module; wherein,

The processing module is used to determine whether to support the service information supported by the relay device in the direct communication request message;

When it is determined that the service information supported by the relay device in the direct communication request message is supported, the sending module is controlled to send the direct communication response message to the terminal device.
The relay device according to claim 27, wherein the processing module is further configured to:

Determining whether to support the application layer identifier of the relay device in the direct communication request message;

When it is determined that the application layer identifier of the relay device in the direct communication request message is supported, the sending module is controlled to send the direct communication response message to the terminal device.
A terminal device, characterized in that it comprises:

Memory, used to store instructions;

The processor is configured to read instructions in the memory and execute the following process:

The control transceiver sends a direct connection communication request message to the relay device, the direct connection communication request message includes the application layer identifier of the terminal device and the service information supported by the relay device, and receives the information returned by the relay device. A direct communication response message, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device;

Establish a direct communication connection with the relay device.
The terminal device according to claim 29, wherein the direct communication request message further includes a link layer identifier of the terminal device and a first link layer identifier of the relay device, and the relay device The first link layer identifier of the device is determined according to the service information supported by the relay device.
The terminal device according to claim 29, wherein the direct communication response message further includes a link layer identifier of the terminal device and a second link layer identifier of the relay device, and the relay device The second link layer identifier of the device is determined according to the application layer identifier of the relay device.
The terminal device according to claim 29, wherein the direct communication request message further includes an application layer identifier of the relay device.
The terminal device according to any one of claims 29-32, wherein the direct communication request message is a broadcast message, and the direct communication response message is a unicast message.
The terminal device according to claim 33, wherein the transceiver is further used for:

Receive a policy parameter sent by a network device, where the policy parameter includes service information supported by the relay device, and a mapping between the service information supported by the relay device and the first link layer identifier of the relay device relationship.
A relay device, characterized in that it comprises:

Memory, used to store instructions;

The processor is configured to read instructions in the memory and execute the following process:

The control transceiver receives a direct connection communication request message from a terminal device, the direct connection communication request message includes the application layer identifier of the terminal device and the service information supported by the relay device, and returns the direct connection to the terminal device A communication response message, where the direct communication response message includes the application layer identifier of the relay device and the application layer identifier of the terminal device.
The relay device according to claim 35, wherein the direct communication request message further comprises a link layer identifier of the terminal device and a first link layer identifier of the relay device, and the middle The first link layer identifier of the relay device is determined according to the service information supported by the relay device.
The relay device according to claim 35, wherein the direct communication response message further includes a link layer identifier of the terminal device and a second link layer identifier of the relay device, and the middle The second link layer identifier of the relay device is determined according to the application layer identifier of the relay device.
The relay device according to claim 35, wherein the direct communication request message further includes an application layer identifier of the relay device.
The relay device according to any one of claims 35-38, wherein the direct communication request message is a broadcast message, and the direct communication response message is a unicast message.
The relay device according to claim 35, wherein the transceiver is further used for:

Receive a policy parameter sent by a network device, where the policy parameter includes service information supported by the relay device, and a mapping between the service information supported by the relay device and the first link layer identifier of the relay device relationship.
The relay device of claim 40, wherein the processor is further configured to:

Determining whether to support the service information supported by the relay device in the direct communication request message;

When the processing module determines to support the service information supported by the relay device in the direct communication request message, control the transceiver to send the direct communication response message to the terminal device.
The relay device according to claim 41, wherein the processor is further configured to:

Determining whether to support the application layer identifier of the relay device in the direct communication request message;

When the processing module determines to support the application layer identifier of the relay device in the direct communication request message, control the transceiver to send the direct communication response message to the terminal device.
A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and when the computer instructions run on a computer, the computer executes any of claims 1-6 or 7-14 The method described in one item.