WO2016173077A1

WO2016173077A1 - Method, apparatus and terminal for device discovery in terminal direct communication

Info

Publication number: WO2016173077A1
Application number: PCT/CN2015/080410
Authority: WO
Inventors: 雷艺学; 张晨璐; 张云飞
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2015-04-27
Filing date: 2015-05-29
Publication date: 2016-11-03
Also published as: CN104796852B; CN104796852A

Abstract

The present invention provides a method, apparatus and terminal for device discovery in terminal direct communication, the method for device discovery in terminal direct communication is applicable to a terminal and comprises: the terminal forms a D2D terminal group with at least one D2D terminal having predetermined location relationship with the terminal, and determines whether the terminal can act as a proxy terminal of the D2D terminal group; when determining that the terminal can act as the proxy terminal, the terminal transmits a discovery message representing the D2D terminal group, so that when receiving the discovery message, other D2D terminals can simultaneously discover all the terminals in the D2D terminal group on the basis of the discovery message. The technical solution of the present invention efficiently reduces the occupied time frequency resource during the D2D discovery procedure, and improves the efficiency for D2D discovery.

Description

Device discovery method, device and terminal for terminal direct communication

This application claims priority to Chinese Patent Application No. 201510206188.X filed on Apr. 27, 2015, entitled "Establishing Method, Apparatus and Terminal for Device for Terminal Direct Communication", The entire contents are incorporated herein by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a device discovery method for terminal direct connection communication, a device discovery device for terminal direct connection communication, and a terminal.

Background technique

With the development of the hardware and software technology of the mobile terminal and the development of the wireless communication technology, the Device to Device (D2D) is a technology for direct terminal communication introduced by the 3GPP, allowing user data transmission without going through the infrastructure of the cellular network. Gradually become an important technical point. D2D technology mainly includes D2D discovery (ie discovery phase) and D2D communication (ie communication phase). D2D discovery and D2D communication are independent services. D2D communication allows two UEs to directly send data directly through a specific channel (sidelink channel). And transmission without transmission through the base station.

D2D discovery is a process introduced by 3GPP to support one terminal to determine whether another terminal is in a neighboring area. The D2D discovery mechanism defined therein is mainly based on each UE transmitting a D2D discovery message. This scenario makes it possible to have a large number of D2D discovery messages in a scenario where the density of the terminal is large and the number of terminals participating in the D2D discovery is high. In this case, it will be difficult to meet the requirements of D2D discovery regardless of the D2D discovery resource allocation mode (that is, the allocation mode of the dedicated resource or shared resource pool), especially considering the density of D2D terminals in the future 5G network. Big scene.

Therefore, how to reduce the time-frequency resources occupied in the D2D discovery process and improve the efficiency of D2D discovery become a technical problem to be solved.

Summary of the invention

The present invention is based on at least one of the above technical problems, and proposes a new one for terminal straight The device discovery scheme of the communication device effectively reduces the time-frequency resources occupied in the D2D discovery process and improves the discovery efficiency of the D2D.

In view of the above, the present invention provides a device discovery method for terminal direct communication. The device discovery method is applicable to a terminal, and includes: the terminal and the at least one D2D terminal having a predetermined positional relationship form a D2D terminal group. Determining whether it can act as a proxy terminal of the D2D terminal group; when determining that the proxy terminal is capable of being used, the terminal sends a discovery message indicating the D2D terminal group for other D2D terminals to receive The discovery message can simultaneously discover all the terminals in the D2D terminal group according to the discovery message.

In this technical solution, the terminal forms a D2D terminal group by at least one D2D terminal having a predetermined positional relationship, and transmits a discovery message indicating a D2D terminal group when determining a proxy terminal capable of acting as a D2D terminal group, so that When receiving the discovery message, the other D2D terminal can simultaneously discover all the terminals in the D2D terminal group, so that when the D2D discovery process is required, the D2D terminal group discovery message can be sent by one D2D terminal in the D2D terminal group. It avoids that all terminals in the D2D terminal group send discovery messages and occupy more time-frequency resources, and also improves the discovery efficiency of D2D.

In the above technical solution, preferably, the step of determining whether it can be the proxy terminal of the terminal group specifically includes: the terminal sending a request as the proxy terminal to the at least one D2D terminal; When at least one consent instruction fed back by the D2D terminal is determined, it can be determined as the proxy terminal. Specifically, if the D2D terminal wishes to act as a D2D terminal group proxy terminal, it needs to send a request to other terminals in the D2D terminal group, and can be used as a D2D terminal group when the other terminals in the D2D terminal group agree. Proxy terminal.

In the above technical solution, after receiving the consent instruction fed back by the at least one D2D terminal, the method further includes: receiving a D2D discovery identifier sent by each D2D terminal in the at least one D2D terminal; and storing the each The D2D discovery identifier sent by the D2D terminal.

In this technical solution, each D2D terminal is determined according to the D2D discovery identifier by receiving the D2D discovery identifier sent by each D2D terminal and storing the D2D discovery identifier sent by each D2D terminal.

In the above technical solution, preferably, the method further includes: mapping a D2D discovery identifier of all D2D terminals in the D2D terminal group to a virtual D2D group discovery identifier; or The D2D discovery identifier of each D2D terminal is mapped to a virtual D2D discovery identifier.

In the technical solution, the D2D discovery identifier of all the D2D terminals in the D2D terminal group is mapped to a virtual D2D group discovery identifier, or the D2D discovery identifier of each D2D terminal is mapped to a virtual D2D discovery identifier. To enable protection of the privacy of the D2D terminal group or each D2D terminal. Specifically, if the D2D service needs to be specific to a certain group, the D2D discovery identifier of all the D2D terminals may be mapped to a virtual D2D group discovery identifier. If the D2D service needs to be specific to each D2D terminal, The D2D discovery identifier of each D2D terminal is mapped to a virtual D2D discovery identifier.

In the above technical solution, before the sending the discovery message, the method further includes: according to the D2D discovery identifier of all D2D terminals in the D2D terminal group, the number of D2D terminals in the D2D terminal group, And the number of resources that the discovery message can occupy generates the discovery message.

In the technical solution, the discovery message is generated according to the D2D discovery identifier of all D2D terminals, the number of D2D terminals in the D2D terminal group, and the number of resources occupied by the discovery message, so that other terminals can be found through parsing when receiving the discovery message. The message discovers information about the D2D terminal group.

In the above technical solution, preferably, further comprising: detecting whether each D2D terminal in the at least one D2D terminal leaves the D2D terminal group; detecting that any D2D terminal in the at least one D2D terminal is leaving The discovery message is updated when the D2D terminal group is used.

In this technical solution, by detecting that any D2D terminal leaves the D2D terminal group, the discovery message is updated, so that the information of the D2D terminal group represented by the discovery message is in the latest state, thereby ensuring that other terminals are parsing the discovery message. After that, the relevant information of the D2D terminal group can be accurately determined.

The step of detecting whether each D2D terminal leaves the D2D terminal group specifically includes:

Transmitting an inquiry signal to each of the D2D terminals in real time or periodically to determine whether each of the D2D terminals leaves the D2D terminal group according to whether the feedback information of each D2D terminal is received; or

Sending control signaling to each of the D2D terminals such that each of the D2D terminals is away Sending notification information to the agent terminal when the D2D terminal group is opened; or

Whether each of the D2D terminals leaves the D2D terminal group is determined according to whether channel measurement information and/or synchronization information fed back by each D2D terminal can be received.

According to a second aspect of the present invention, a device discovery method for terminal direct communication is also provided. The device discovery method is applicable to a terminal, and includes: the terminal and the at least one D2D terminal having a predetermined positional relationship form a D2D. a terminal group, and receiving a request message sent by any D2D terminal in the D2D terminal group as a proxy terminal of the D2D terminal group; the terminal feeding back a consent instruction to any of the D2D terminals, and The D2D discovery identifier is sent to any of the D2D terminals for the any D2D terminal to generate and send a discovery message indicating the D2D terminal group.

In this technical solution, the D2D terminal group is composed of at least one D2D terminal having a predetermined positional relationship, and the consent instruction and the D2D discovery identifier of the D2D terminal are sent back to the D2D terminal that sends the request, so that the D2D terminal that sends the request can be used as the D2D terminal. The proxy terminal sends a discovery message indicating the D2D terminal group, and the other D2D terminal can simultaneously discover all the terminals in the D2D terminal group when receiving the discovery message, so that when the D2D discovery process is required, the The D2D terminal sends the discovery message of the D2D terminal group, which avoids that all the terminals in the D2D terminal group send the discovery message and occupy more time-frequency resources, and also improves the discovery efficiency of the D2D.

In the above technical solution, preferably, the method further includes: stopping sending the discovery signal corresponding to the service type of the D2D terminal group after feeding back the consent instruction to the any D2D terminal. Specifically, since the discovery message of the D2D terminal group is sent by any of the D2D terminals after the feedback command is fed back to any of the D2D terminals, it is not necessary to transmit the service type corresponding to the D2D terminal group. Discover the signal. Of course, the terminal can send discovery signals of other service types.

According to the third aspect of the present invention, a device discovery method for terminal direct communication is also provided. The device discovery method is applicable to a terminal, and includes: the terminal detecting a discovery message sent by another D2D terminal; When it is determined according to the discovery message that the other D2D terminal is a proxy terminal of a D2D terminal group composed of a plurality of D2D terminals, the discovery message is parsed to simultaneously discover all terminals in the D2D terminal group.

In the technical solution, by determining that the other D2D terminal is a proxy terminal of the D2D terminal group composed of the plurality of D2D terminals according to the discovery message, the discovery message is parsed to simultaneously discover all the terminals in the D2D terminal group, so that When the D2D discovery process is required, the D2D terminal group can send the discovery message of the D2D terminal group, which avoids all the terminals in the D2D terminal group sending the discovery message and occupies more time-frequency resources, and also improves the D2D. Discovery efficiency.

In the above technical solution, preferably, the step of parsing the discovery message comprises:

Parsing the discovery message according to a predefined parsing syntax; or

Interacting with the network side device to parse the discovery message; or

The discovery message is parsed by communicating with the other D2D terminals.

According to a fourth aspect of the present invention, a device discovery apparatus for terminal direct communication is further provided, the device discovery apparatus being applicable to a terminal, comprising: a determining unit, configured to have a predetermined positional relationship between the terminal and the terminal When the at least one D2D terminal constitutes a D2D terminal group, determining whether the terminal is capable of acting as a proxy terminal of the D2D terminal group; and the first sending unit is configured to determine, at the determining unit, that the terminal is capable of serving as the proxy terminal And sending a discovery message indicating the group of the D2D terminal, so that the other D2D terminal can simultaneously discover all the terminals in the D2D terminal group according to the discovery message when receiving the discovery message.

In this technical solution, a D2D terminal group is formed by at least one D2D terminal having a predetermined positional relationship, and when a proxy terminal capable of acting as a D2D terminal group is determined, a discovery message indicating a D2D terminal group is transmitted to make other When receiving the discovery message, the D2D terminal can simultaneously discover all the terminals in the D2D terminal group, so that when the D2D discovery process is required, the D2D terminal group can send the discovery message of the D2D terminal group, thereby avoiding the D2D terminal group. All terminals send discovery messages and occupy more time-frequency resources, and also improve the discovery efficiency of D2D.

In the above technical solution, preferably, the determining unit is configured to: send a request as the proxy terminal to the at least one D2D terminal, and determine, when receiving the consent instruction fed back by the at least one D2D terminal, The terminal can function as the proxy terminal. Specifically, if the D2D terminal wishes to act as a D2D terminal group proxy terminal, it is required to send a request to other terminals in the D2D terminal group, and only when other terminals in the D2D terminal group agree. Acting as a proxy terminal for a D2D terminal group.

In the above technical solution, the method further includes: a receiving unit, configured to receive, after receiving the consent instruction fed back by the at least one D2D terminal, a D2D discovery identifier sent by each D2D terminal in the at least one D2D terminal; And a storage unit, configured to store the D2D discovery identifier sent by each D2D terminal.

In the above technical solution, preferably, the method further includes: a processing unit, configured to map the D2D discovery identifiers of all the D2D terminals in the D2D terminal group into one virtual D2D group discovery identifier, or each of the The D2D discovery identifier of the D2D terminal is mapped to a virtual D2D discovery identifier.

In the above technical solution, preferably, the method further includes: a generating unit, configured to use, according to the D2D discovery identifier of all D2D terminals in the D2D terminal group, the number of D2D terminals in the D2D terminal group, and the The discovery message can be generated by the number of resources that the discovery message can occupy.

In the above technical solution, preferably, the method further includes: a detecting unit, configured to detect whether each D2D terminal in the at least one D2D terminal leaves the D2D terminal group; And to update the discovery message when the detecting unit detects that any one of the at least one D2D terminal leaves the D2D terminal group.

In the above technical solution, preferably, the detecting unit is specifically configured to:

Transmitting control signaling to each of the D2D terminals such that the D2D terminal of each of the D2D terminals sends a notification message to the proxy terminal when leaving the D2D terminal group; or

According to a fifth aspect of the present invention, a device discovery apparatus for terminal direct communication is further provided. The device discovery apparatus is applicable to a terminal, and includes: a receiving unit, configured to have a predetermined positional relationship between the terminal and the terminal. Receiving, by the D2D terminal group, a request message sent by any D2D terminal in the D2D terminal group as a proxy terminal of the D2D terminal group, and a sending unit, configured to send any D2D to the D2D terminal group The terminal feeds back the consent command, and sends the D2D discovery identifier of the terminal to the any D2D terminal, so that the any D2D terminal generates and sends a discovery message indicating the D2D terminal group.

In the above technical solution, preferably, the sending unit is further configured to stop sending the discovery signal corresponding to the service type of the D2D terminal group after feeding back the consent instruction to the any D2D terminal. Specifically, since the discovery message of the D2D terminal group is sent by any of the D2D terminals after the feedback command is fed back to any of the D2D terminals, it is not necessary to transmit the service type corresponding to the D2D terminal group. Discover the signal. Of course, the terminal can send discovery signals of other service types.

According to a sixth aspect of the present invention, a device discovery device for terminal direct communication is further provided, where the device discovery device is applicable to a terminal, and includes: a detecting unit, configured to detect a discovery message sent by another D2D terminal; a unit, configured to parse the discovery message to simultaneously discover the D2D terminal group when determining that the other D2D terminal is a proxy terminal of a D2D terminal group composed of a plurality of D2D terminals according to the discovery message All terminals.

In the above technical solution, preferably, the processing unit is configured to: parse the discovery message according to a predefined parsing syntax; or interact with the network side device to parse the discovery message; or The other D2D terminals communicate to parse the discovery message.

According to a seventh aspect of the present invention, a terminal is further provided, the terminal comprising a communication bus, a transceiver, a memory, and a processor, wherein:

The communication bus is configured to implement connection communication between the transceiver device, the memory, and the processor;

The program stores a set of program codes, and the processor calls program code stored in the memory to perform the following operations:

The processor is configured to form a D2D terminal group with at least one D2D terminal having a predetermined positional relationship, and determine whether it can be a proxy terminal of the D2D terminal group;

The processor is further configured to: when determining to be the proxy terminal, send, by using the transceiver, a discovery message indicating the D2D terminal group, so that other D2D terminals can receive the discovery message according to the The discovery message simultaneously discovers all terminals in the D2D terminal group.

In the above technical solution, preferably, the step of determining, by the processor, whether it can be a proxy terminal of the terminal group includes:

Sending a request as the proxy terminal to the at least one D2D terminal;

And determining, when the transceiver device receives the consent instruction fed back by the at least one D2D terminal, as the proxy terminal.

In the above technical solution, preferably, the transceiver device is further configured to receive a D2D discovery identifier sent by each D2D terminal in the at least one D2D terminal;

The processor is further configured to store the D2D discovery identifier sent by each D2D terminal.

In the above technical solution, preferably, the processor is further configured to:

Mapping a D2D discovery identifier of all D2D terminals in the D2D terminal group to a virtual D2D group discovery identifier; or

Mapping the D2D discovery identifier of each D2D terminal to a virtual D2D discovery identifier.

And generating the discovery message according to a D2D discovery identifier of all D2D terminals in the D2D terminal group, a number of D2D terminals in the D2D terminal group, and a quantity of resources that the discovery message can occupy.

Detecting whether each D2D terminal in the at least one D2D terminal leaves the D2D terminal group;

The discovery message is updated upon detecting that any of the at least one D2D terminal leaves the D2D terminal group.

In the above technical solution, the step of the processor detecting whether the D2D terminal leaves the D2D terminal group specifically includes:

Transmitting an inquiry signal to each of the D2D terminals in real time or periodically to receive according to whether or not to receive The feedback information to each of the D2D terminals determines whether each of the D2D terminals leaves the D2D terminal group; or

According to an eighth aspect of the present invention, a terminal is further provided, the terminal comprising a communication bus, a transceiver, a memory, and a processor, wherein:

The program stores a set of program codes, and the transceiver device and the processor call program code stored in the memory to perform the following operations:

The processor, configured to form a D2D terminal group with at least one D2D terminal having a predetermined positional relationship;

The transceiver device is configured to receive a request message sent by any D2D terminal in the D2D terminal group as a proxy terminal of the D2D terminal group;

The transceiver device is further configured to feed back a consent instruction to the any D2D terminal, and send its own D2D discovery identifier to the any D2D terminal, where the any D2D terminal generates and sends the D2D. The discovery message of the terminal group.

In the above technical solution, preferably, the transceiver device is further configured to:

After feeding back the consent command to any of the D2D terminals, stopping transmitting the discovery signal corresponding to the service type of the D2D terminal group.

According to a ninth aspect of the present invention, a terminal is further provided, the terminal comprising a communication bus, a transceiver, a memory, and a processor, wherein:

The processor is configured to detect a discovery message sent by another D2D terminal;

The processor is further configured to: when determining, according to the discovery message, that the other D2D terminal is a proxy terminal of a D2D terminal group composed of a plurality of D2D terminals, parse the discovery message to simultaneously discover the D2D All terminals in the terminal group.

In the foregoing technical solution, preferably, the step of the processor parsing the discovery message includes:

Parsing the discovery message according to a predefined parsing syntax; or

Interacting with the network side device to parse the discovery message; or

The discovery message is parsed by communicating with the other D2D terminals.

Through the above technical solutions, the time-frequency resources occupied in the D2D discovery process are effectively reduced, and the discovery efficiency of the D2D is improved.

DRAWINGS

1 is a schematic flow chart showing a device discovery method for terminal direct communication according to a first embodiment of the present invention;

2 is a schematic block diagram of a device discovery apparatus for terminal direct communication according to a first embodiment of the present invention;

3 is a schematic flow chart showing a device discovery method for terminal direct communication according to a second embodiment of the present invention;

4 is a schematic block diagram of a device discovery apparatus for terminal direct communication according to a second embodiment of the present invention;

FIG. 5 is a schematic flow chart showing a device discovery method for terminal direct communication according to a third embodiment of the present invention; FIG.

6 is a schematic block diagram of a device discovery apparatus for terminal direct communication according to a third embodiment of the present invention;

FIG. 7 is a schematic diagram showing a D2D terminal group discovery process according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic diagram showing signaling interaction in a discovery process of a D2D terminal group according to an embodiment of the present invention; FIG.

FIG. 9 is a block diagram showing the structure of an embodiment of a terminal according to a fourth embodiment of the present invention; FIG.

FIG. 10 is a block diagram showing the structure of an embodiment of a terminal according to a fifth embodiment of the present invention; FIG.

Figure 11 is a block diagram showing the structure of an embodiment of a terminal in accordance with a sixth embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a full understanding of the invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

1 is a schematic flow chart showing a device discovery method for terminal direct communication according to a first embodiment of the present invention.

As shown in FIG. 1 , a device discovery method for terminal direct communication according to a first embodiment of the present invention, the device discovery method is applicable to a terminal, including: step 102, the terminal has a predetermined positional relationship. At least one D2D terminal constitutes a D2D terminal group, and determines whether it can be used as a proxy terminal of the D2D terminal group; Step 104, when it is determined that the proxy terminal can be used, the terminal sends a representation of the D2D terminal group. The discovery message can be used by other D2D terminals to simultaneously discover all the terminals in the D2D terminal group according to the discovery message when receiving the discovery message.

In the above technical solution, preferably, the step of determining whether it can be the proxy terminal of the terminal group specifically includes: the terminal sending a request as the proxy terminal to the at least one D2D terminal; When at least one consent instruction fed back by the D2D terminal is determined, it can be determined as the proxy terminal. Specifically, if the D2D terminal is expected to be a D2D terminal group generation The terminal needs to send a request to other terminals in the D2D terminal group, and can be used as a proxy terminal of the D2D terminal group when the other terminals in the D2D terminal group agree.

In this technical solution, each D2D terminal is determined according to the D2D discovery identifier by receiving the D2D discovery identifier sent by each of the at least one D2D terminal and storing the D2D discovery identifier sent by each D2D terminal.

In the above technical solution, preferably, the method further includes: mapping a D2D discovery identifier of all D2D terminals in the D2D terminal group to a virtual D2D group discovery identifier; or discovering D2D of each D2D terminal. The identity is mapped to a virtual D2D discovery identity.

2 is a schematic block diagram of a device discovery apparatus for terminal direct communication in accordance with a first embodiment of the present invention.

As shown in FIG. 2, the device discovery apparatus 200 for terminal direct communication according to the first embodiment of the present invention includes: a determining unit 202 and a first transmitting unit 204, wherein the device discovery apparatus 200 is applicable to terminal.

The determining unit 202 is configured to determine, when the terminal forms a D2D terminal group with at least one D2D terminal having a predetermined positional relationship, whether the terminal is capable of acting as a proxy terminal of the D2D terminal group; The sending unit 204 is configured to: when the determining unit 202 determines that the terminal is capable of serving as the proxy terminal, send a discovery message indicating the D2D terminal group, so that other D2D terminals can receive the discovery message when receiving the discovery message. All terminals in the D2D terminal group are simultaneously discovered according to the discovery message.

In this technical solution, a D2D terminal group is formed by at least one D2D terminal having a predetermined positional relationship, and when a proxy terminal capable of acting as a D2D terminal group is determined, a discovery message indicating a D2D terminal group is transmitted to make other When receiving the discovery message, the D2D terminal can simultaneously discover all the terminals in the D2D terminal group, so that when the D2D discovery process is required, the D2D terminal group can send the discovery message of the D2D terminal group, thereby avoiding the D2D terminal group. All terminals in the group send discovery messages and occupy more time-frequency resources, and also improve the discovery efficiency of D2D.

In the above technical solution, the determining unit 202 is specifically configured to: send a request as the proxy terminal to the at least one D2D terminal, and when receiving the consent instruction fed back by the at least one D2D terminal, It is determined that the terminal can function as the proxy terminal. Specifically, if the D2D terminal wishes to act as a D2D terminal group proxy terminal, it needs to send a request to other terminals in the D2D terminal group, and can be used as a D2D terminal group when the other terminals in the D2D terminal group agree. Proxy terminal.

In the foregoing technical solution, the method further includes: a receiving unit 206, configured to receive, after receiving the consent instruction fed back by the at least one D2D terminal, a D2D discovery identifier sent by each D2D terminal in the at least one D2D terminal. The storage unit 208 is configured to store the D2D discovery identifier sent by each of the D2D terminals.

In the above technical solution, preferably, the method further includes: a processing unit 210, configured to map, to the virtual D2D group discovery identifier, a D2D discovery identifier of all D2D terminals in the D2D terminal group, or The D2D discovery identifier of the D2D terminals is mapped to a virtual D2D discovery identifier.

In the foregoing technical solution, the method further includes: a generating unit 212, configured to use, according to a D2D discovery identifier of all D2D terminals in the D2D terminal group, a number of D2D terminals in the D2D terminal group, and The number of resources that the discovery message can occupy generates the discovery Message.

In the above technical solution, preferably, the method further includes: a detecting unit 214, configured to detect whether each D2D terminal in the at least one D2D terminal leaves the D2D terminal group; and an updating unit 216, in the detecting The unit 214 detects that any of the at least one D2D terminal leaves the D2D terminal group, and updates the discovery message.

In the above technical solution, preferably, the detecting unit 214 is specifically configured to:

FIG. 3 shows a schematic flow chart of a device discovery method for terminal direct communication according to a second embodiment of the present invention.

As shown in FIG. 3, a device discovery method for terminal direct communication according to a second embodiment of the present invention, the device discovery method is applicable to a terminal, including: step 302, the terminal has a predetermined positional relationship. At least one D2D terminal constitutes a D2D terminal group, and receives a request message sent by any D2D terminal in the D2D terminal group as a proxy terminal of the D2D terminal group; in step 304, the terminal goes to any The D2D terminal feeds back the consent command and sends its own D2D discovery identifier to any of the D2D terminals for any of the D2D terminals. The terminal generates and sends a discovery message indicating the D2D terminal group.

4 is a schematic block diagram of a device discovery apparatus for terminal direct communication in accordance with a second embodiment of the present invention.

As shown in FIG. 4, a device discovery apparatus 400 for terminal direct communication according to a second embodiment of the present invention includes: a receiving unit 402 and a transmitting unit 404, wherein the device discovery apparatus 400 is applicable to a terminal.

The receiving unit 404 is configured to receive, when the terminal and the at least one D2D terminal having the predetermined positional relationship form a D2D terminal group, the D2D terminal group sent by any D2D terminal in the D2D terminal group. The request message of the proxy terminal; the sending unit 404, configured to feed back the consent instruction to the any D2D terminal, and send the D2D discovery identifier of the terminal to the any D2D terminal, for the any D2D terminal A discovery message representing the D2D terminal group is generated and transmitted.

In this technical solution, the D2D terminal group is composed of at least one D2D terminal having a predetermined positional relationship, and the consent instruction and the D2D discovery identifier of the D2D terminal are sent back to the D2D terminal that sends the request, so that the D2D terminal that sends the request can be used as the D2D terminal. Proxy terminal to send Sending a discovery message indicating a D2D terminal group, for other D2D terminals to simultaneously discover all the terminals in the D2D terminal group when receiving the discovery message, so that when the D2D discovery process is required, the D2D terminal can be sent by one D2D terminal. The discovery message of the group avoids that all the terminals in the D2D terminal group send the discovery message and occupy more time-frequency resources, and also improves the discovery efficiency of the D2D.

In the above technical solution, preferably, the sending unit 404 is further configured to stop sending the discovery signal corresponding to the service type of the D2D terminal group after feeding back the consent instruction to the any D2D terminal. Specifically, since the discovery message of the D2D terminal group is sent by any of the D2D terminals after the feedback command is fed back to any of the D2D terminals, it is not necessary to transmit the service type corresponding to the D2D terminal group. Discover the signal. Of course, the terminal can send discovery signals of other service types.

FIG. 5 is a schematic flow chart showing a device discovery method for terminal direct communication according to a third embodiment of the present invention.

As shown in FIG. 5, a device discovery method for terminal direct communication according to a third embodiment of the present invention, the device discovery method is applicable to a terminal, including: Step 502, the terminal detects transmission by another D2D terminal. a discovery message; in step 504, the terminal, when determining, according to the discovery message, that the other D2D terminal is a proxy terminal of a D2D terminal group composed of a plurality of D2D terminals, parsing the discovery message to simultaneously discover the All terminals in the D2D terminal group.

Parsing the discovery message according to a predefined parsing syntax; or

Interacting with the network side device to parse the discovery message; or

The discovery message is parsed by communicating with the other D2D terminals.

Figure 6 is a schematic block diagram of a device discovery apparatus for terminal direct communication in accordance with a third embodiment of the present invention.

As shown in FIG. 6, a device discovery apparatus 600 for terminal direct communication according to a third embodiment of the present invention includes: a detection unit 602 and a processing unit 604, wherein the device discovery apparatus 600 is applicable to a terminal.

The detecting unit 602 is configured to detect a discovery message sent by another D2D terminal, and the processing unit 604 is configured to determine, according to the discovery message, that the other D2D terminal is a proxy of a D2D terminal group composed of multiple D2D terminals. At the time of the terminal, the discovery message is parsed to simultaneously discover all the terminals in the D2D terminal group.

In the foregoing technical solution, the processing unit 604 is specifically configured to: parse the discovery message according to a predefined parsing syntax; or interact with the network side device to parse the discovery message; or Communicating with the other D2D terminals to parse the discovery message.

The present invention also proposes a terminal comprising: a device discovery device 200 for terminal direct communication as shown in FIG. 2; and/or a device discovery device for terminal direct communication as shown in FIG. 400; and/or device discovery device 600 for terminal direct communication as shown in FIG. 6.

The technical solution of the present invention will be described in detail below with reference to FIGS. 7 to 8.

The technical solution of the present invention mainly utilizes the group characteristics of D2D to improve the discovery efficiency, and is applicable to a scenario with network coverage and no network coverage.

Since the present invention mainly relates to the protocol mechanism on the RAN side, it is necessary to explain the assumption of the CN side of the technical solution of the present invention. The present invention assumes that the network side manages the D2D group at a high level, and the terminal can determine whether it belongs to a group according to the identifier of the other terminal. In the scenario where there is no network coverage, the terminal can also determine that the discovered UE is based on pre-configured information such as the group ID. No belongs to a group.

The main idea of the present invention can be summarized as follows: For a terminal that has been discovered in a specific area or that has been pre-associated by means of previous D2D communication, one of the terminals can assume the role of Discovery Proxy. The terminal and other terminals that select it as an agent have static subscription information or application-driven trust relationships. That is, after the selection and confirmation of the agent is completed, the transmission of the D2D discovery message is sent by the agent node as long as a certain proximity relationship is still maintained. The user equipment (User equipment) that receives the D2D discovery message can discover multiple D2D terminals at one time according to the received D2D discovery message.

As shown in FIG. 7 , after receiving a discovery message representing a specific group sent by a proxy UE (Proxy UE), the UE (Monitoring UE) obtains a plurality of D2D UEs and multiple D2D UEs by parsing the message. The currently running application information.

The signaling process of the discovery process is as shown in FIG. 8. The UE in the D2D group performs proxy confirmation with the proxy UE, that is, the UE as the proxy is selected, and the UE as the proxy can interact with the CN node when necessary. When transmitting the discovery message, the proxy UE may send a D2D group discovery message to enable the UE performing the discovery process to simultaneously discover multiple D2D terminals.

Specifically, in the technical solution of the present invention, a discovery and determination mechanism of the Discovery Proxy is introduced. Discovery Proxy is a means of achieving high-efficiency D2D discovery by implementing hierarchical organization in high-density D2D terminal scenarios.

If a terminal in a specific area wishes to assume the role, the information can be sent on the existing D2D discovery channel. Other D2D terminals can choose whether to select the terminal as a proxy. If yes, a determination message is sent, and the D2D discovery identifier or the pre-configured D2D discovery identifier assigned to the network request is sent to the terminal as a Proxy.

In order to solve the privacy protection problem of the D2D discovery identifier, all UEs can map the identifier according to a specific algorithm. The new identifier obtained by the mapping may have a one-to-one or one-to-many correspondence with the original identifier, and the mapping relationship may be parsed at the receiving end UE or through interaction with the network side. Specifically, the one-to-one mapping is applicable to the case where the D2D discovery service needs to be specific to a certain UE, and the one-to-many mapping is applicable to the case where the D2D discovery service only needs to be specific to a certain group. For example, if the purpose of D2D discovery is to push coupon information based on the potential consumption intention of the group to a specific range of users, then it is not necessary to specific to a certain user, only need to Groups are fine.

When the terminal that is the Proxy node maintains the reachability information of the UE in the group, it can periodically detect the UE, and the UE leaving the group can actively notify the Proxy node. In order to reduce the recombination of signaling, if it is periodic detection, a large time period should be used as much as possible. Other information of D2D, such as channel measurement, synchronization, etc., can also be used to detect reachability without triggering the D2D discovery process again.

The following describes in detail the construction and transmission mechanism of the D2D group discovery message proposed by the present invention:

Different from the discovery mechanism that has been defined by the 3GPP, the D2D discovery message sent by the UE of the group discovery mechanism proposed by the present invention represents multiple UEs located in a specific area. Depending on the statistical dwell time characteristics of the UEs in the group and the terminal density, the number of UEs that the discovery message can represent may have a relatively large number range. After the Proxy acknowledgment, other terminals in the D2D terminal group may choose not to send the D2D discovery signal unless the demand of other non-group services needs to be triggered before sending.

The construction of the group discovery message is performed according to the identifiers of multiple UEs obtained by mapping. Specifically, the discovery identifier may be generated according to the availability of the discovery resource and the number of UEs. The group discovery identifier unencrypted content may be at the application layer level, for example, the following group discovery message may be constructed: Cardgamefans#100.outlet.xuanwumenarea@beijing, the group discovery message indicates the Xuanwumen area of Beijing There is 100 D2D users in an "outlet" who want to play card games together. The group finds whether the message needs to be encrypted and then sent according to the configuration information when most UEs perform D2D discovery.

The following describes the resolution process of Discovery messages in detail.

Analytic mode 1: The unified identifier resolution syntax can help the receiving UE to parse the group discovery message. The syntax of this application layer may not be defined in the 3GPP specifications, and an XML mechanism may be used to ensure interoperability with terminal D2D services.

The analytic mode 2: After receiving the information, if the receiving UE is interested in the group, the network side can parse the information of the group Proxy node to perform subsequent D2D services. It should be noted that if there is no network coverage scenario, the receiving UE can only parse through interaction with the Proxy node. The receiving UE may only perform direct D2D communication with some UEs in the group, but the UE that cannot directly reach may need to communicate by means of UE relay.

The technical solution of the present invention enables the D2D group terminal with the cluster header to improve the D2D discovery efficiency, and is applicable to the scenario where the 3GPP LTE subsequent enhanced version and the D2D terminal density in the future 5G system are increased, and the unnecessary D2D discovery message can be reduced. Send and resource usage to improve system operation efficiency.

Fig. 9 is a block diagram showing the structure of an embodiment of a terminal in accordance with a fourth embodiment of the present invention. As shown in FIG. 9, the terminal may include at least one transceiver 503, at least one processor 501, such as a CPU, a memory 504, and at least one communication bus 502.

The communication bus 502 is configured to connect the transceiver 503, the processor 501, and the memory 504.

The above memory 504 may be a high speed RAM memory or a non-volatile memory such as a disk memory. The memory 504 is further configured to store a set of program codes, and the transceiver 503 and the processor 501 are configured to call the program code stored in the memory 504, and perform the following operations:

The processor 501 is configured to form a D2D terminal group with at least one D2D terminal having a predetermined positional relationship, and determine whether it can be a proxy terminal of the D2D terminal group;

The processor 501 is further configured to: when the determining is capable of serving as the proxy terminal, send, by using the transceiver 503, a discovery message indicating the D2D terminal group, for other D2D terminals to receive the discovery message. All terminals in the D2D terminal group can be simultaneously discovered according to the discovery message.

In the above technical solution, preferably, the step of the processor 501 determining whether it can be the proxy terminal of the terminal group specifically includes:

Sending a request as the proxy terminal to the at least one D2D terminal;

When the transceiver 503 receives the consent instruction fed back by the at least one D2D terminal, it is determined that the proxy terminal can be used.

In the above technical solution, preferably, the transceiver device 503 is further configured to receive a D2D discovery identifier sent by each D2D terminal in the at least one D2D terminal;

The processor 501 is further configured to store the D2D discovery identifier sent by each of the D2D terminals.

In the above technical solution, preferably, the processor 501 is further configured to:

Mapping D2D discovery identifiers of all D2D terminals in the D2D terminal group into one a virtual D2D group discovery identifier; or

In the foregoing technical solution, the step of the processor 501 detecting whether the D2D terminal leaves the D2D terminal group specifically includes:

FIG. 10 is a block diagram showing the structure of an embodiment of a terminal according to a fifth embodiment of the present invention. As shown in FIG. 10, the terminal may include at least one transceiver 603, at least one processor 601, such as a CPU, a memory 604, and at least one communication bus 602.

The communication bus 602 is used to connect the transceiver 603, the processor 601, and the memory 604.

The above memory 604 may be a high speed RAM memory or a non-volatile memory such as a disk memory. The above memory 604 is also used to store a set of programs The sequence code, the transceiver 603 and the processor 601 are used to call the program code stored in the memory 604, and perform the following operations:

The processor 601 is configured to form a D2D terminal group with at least one D2D terminal having a predetermined positional relationship;

The transceiver 603 is configured to receive a request message sent by any D2D terminal in the D2D terminal group as a proxy terminal of the D2D terminal group;

The transceiver 603 is further configured to feed back a consent instruction to the any D2D terminal, and send its own D2D discovery identifier to the any D2D terminal, where the any D2D terminal generates and sends the The discovery message of the D2D terminal group.

In the above technical solution, preferably, the transceiver 603 is further configured to:

Figure 11 is a block diagram showing the structure of an embodiment of a terminal in accordance with a sixth embodiment of the present invention. As shown in FIG. 11, the terminal may include at least one transceiver 703, at least one processor 701, such as a CPU, a memory 704, and at least one communication bus 702.

The communication bus 702 is used to connect the transceiver 703, the processor 701, and the memory 704.

The above memory 704 may be a high speed RAM memory or a non-volatile memory such as a disk memory. The memory 704 is further configured to store a set of program codes, and the transceiver 703 and the processor 701 are configured to call the program code stored in the memory 704, and perform the following operations:

The processor 701 is configured to detect a discovery message sent by another D2D terminal.

The processor 701 is further configured to: when determining, according to the discovery message, that the other D2D terminal is a proxy terminal of a D2D terminal group that is composed of multiple D2D terminals, parse the discovery message to simultaneously discover the All terminals in the D2D terminal group.

In the foregoing technical solution, preferably, the step of the processor 701 parsing the discovery message includes:

Parsing the discovery message according to a predefined parsing syntax; or

Interacting with the network side device to parse the discovery message; or

The discovery message is parsed by communicating with the other D2D terminals.

The technical solution of the present invention is described in detail above with reference to the accompanying drawings, and a new device discovery scheme for terminal direct communication communication is proposed, which effectively reduces the time-frequency resources occupied in the D2D discovery process and improves the discovery efficiency of the D2D. .

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A device discovery method for terminal direct communication, which is applicable to a terminal, and includes:

Forming, by the terminal, a D2D terminal group with at least one D2D terminal having a predetermined positional relationship, and determining whether it can be a proxy terminal of the D2D terminal group;

When determining that the proxy terminal is available, the terminal sends a discovery message indicating the D2D terminal group, so that other D2D terminals can simultaneously discover the D2D terminal according to the discovery message when receiving the discovery message. All terminals in the group.
The device discovery method for terminal direct communication according to claim 1, wherein the step of determining whether it can be used as a proxy terminal of the terminal group comprises:

Sending, by the terminal, a request as the proxy terminal to the at least one D2D terminal;

Upon receiving the consent instruction fed back by the at least one D2D terminal, it is determined that the proxy terminal can be used.
The device discovery method for terminal direct communication according to claim 2, further comprising: after receiving the consent instruction fed back by the at least one D2D terminal, further comprising:

Receiving, by the D2D discovery identifier sent by each D2D terminal in the at least one D2D terminal;

And storing the D2D discovery identifier sent by each D2D terminal.
The device discovery method for terminal direct communication according to claim 3, further comprising:

Mapping a D2D discovery identifier of all D2D terminals in the D2D terminal group to a virtual D2D group discovery identifier; or

Mapping the D2D discovery identifier of each D2D terminal to a virtual D2D discovery identifier.
The device discovery method for terminal direct communication according to claim 3, further comprising: before sending the discovery message,

According to the D2D discovery identifier of all D2D terminals in the D2D terminal group, the number of D2D terminals in the D2D terminal group, and the number of resources that the discovery message can occupy The quantity generates the discovery message.
The device discovery method for terminal direct communication according to any one of claims 1 to 5, further comprising:

Detecting whether each D2D terminal in the at least one D2D terminal leaves the D2D terminal group;

The discovery message is updated upon detecting that any of the at least one D2D terminal leaves the D2D terminal group.
The device discovery method for terminal direct communication according to claim 6, wherein the step of detecting whether each D2D terminal leaves the D2D terminal group comprises:

Transmitting an inquiry signal to each of the D2D terminals in real time or periodically to determine whether each of the D2D terminals leaves the D2D terminal group according to whether the feedback information of each D2D terminal is received; or

Transmitting control signaling to each of the D2D terminals such that the D2D terminal of each of the D2D terminals sends a notification message to the proxy terminal when leaving the D2D terminal group; or

Whether each of the D2D terminals leaves the D2D terminal group is determined according to whether channel measurement information and/or synchronization information fed back by each D2D terminal can be received.
A device discovery method for terminal direct communication, which is applicable to a terminal, and includes:

The terminal and the at least one D2D terminal having a predetermined positional relationship form a D2D terminal group, and receive a request message sent by the D2D terminal in the D2D terminal group as a proxy terminal of the D2D terminal group;

Transmitting, by the terminal, a consent instruction to the any D2D terminal, and sending its own D2D discovery identifier to the any D2D terminal, where the any D2D terminal generates and sends a discovery indicating the D2D terminal group. Message.
The device discovery method for terminal direct communication according to claim 8, further comprising:

After feeding back the consent command to any of the D2D terminals, stopping transmitting the discovery signal corresponding to the service type of the D2D terminal group.
A device discovery method for terminal direct communication, which is applicable to a terminal, and includes:

The terminal detects a discovery message sent by another D2D terminal;

When the terminal determines that the other D2D terminal is a proxy terminal of a D2D terminal group composed of a plurality of D2D terminals according to the discovery message, parsing the discovery message to simultaneously discover the D2D terminal group All terminals.
The device discovery method for terminal direct communication according to claim 10, wherein the step of parsing the discovery message comprises:

Parsing the discovery message according to a predefined parsing syntax; or

Interacting with the network side device to parse the discovery message; or

The discovery message is parsed by communicating with the other D2D terminals.
A device discovery device for terminal direct communication, which is applicable to a terminal, and includes:

a determining unit, configured to determine, when the terminal forms a D2D terminal group with at least one D2D terminal having a predetermined positional relationship, whether the terminal is capable of acting as a proxy terminal of the D2D terminal group;

a first sending unit, configured to: when the determining unit determines that the terminal is capable of serving as the proxy terminal, send a discovery message indicating the D2D terminal group, so that other D2D terminals can receive the discovery message when receiving All terminals in the D2D terminal group are simultaneously discovered according to the discovery message.
The device discovery device for terminal direct communication according to claim 12, wherein the determining unit is specifically configured to:

Sending a request as the proxy terminal to the at least one D2D terminal, and upon receiving the consent instruction fed back by the at least one D2D terminal, determining that the terminal can function as the proxy terminal.
The device discovery device for terminal direct communication according to claim 13, further comprising:

a receiving unit, configured to receive, after receiving the consent instruction fed back by the at least one D2D terminal, a D2D discovery identifier sent by each D2D terminal in the at least one D2D terminal;

And a storage unit, configured to store the D2D discovery identifier sent by each D2D terminal.
The device discovery device for terminal direct communication according to claim 14, further comprising:

a processing unit, configured to map a D2D discovery identifier of all D2D terminals in the D2D terminal group to a virtual D2D group discovery identifier, or

Mapping the D2D discovery identifier of each D2D terminal to a virtual D2D discovery identifier.
The device discovery device for terminal direct communication according to claim 14, further comprising:

a generating unit, configured to generate the discovery message according to a D2D discovery identifier of all D2D terminals in the D2D terminal group, a number of D2D terminals in the D2D terminal group, and a quantity of resources that the discovery message can occupy .
The device discovery device for terminal direct communication according to any one of claims 12 to 16, further comprising:

a detecting unit, configured to detect whether each D2D terminal in the at least one D2D terminal leaves the D2D terminal group;

And an updating unit, configured to update the discovery message when the detecting unit detects that any one of the at least one D2D terminal leaves the D2D terminal group.
The device discovery device for terminal direct communication according to claim 17, wherein the detecting unit is specifically configured to:

Transmitting an inquiry signal to each of the D2D terminals in real time or periodically to determine whether each of the D2D terminals leaves the D2D terminal group according to whether the feedback information of each D2D terminal is received; or

Transmitting control signaling to each of the D2D terminals such that the D2D terminal of each of the D2D terminals sends a notification message to the proxy terminal when leaving the D2D terminal group; or

Whether each of the D2D terminals leaves the D2D terminal group is determined according to whether channel measurement information and/or synchronization information fed back by each D2D terminal can be received.
A device discovery device for terminal direct communication, which is applicable to a terminal, and includes:

a receiving unit, configured to receive, when the terminal and the at least one D2D terminal having a predetermined positional relationship form a D2D terminal group, a proxy terminal sent by any D2D terminal in the D2D terminal group as the D2D terminal group Request message

a sending unit, configured to send a consent instruction to the any D2D terminal, and send the D2D discovery identifier of the terminal to the any D2D terminal, where the any D2D terminal generates and sends the D2D terminal. The discovery message for the group.
The device discovery device for terminal direct communication according to claim 19, wherein the sending unit is further configured to:

After feeding back the consent command to any of the D2D terminals, stopping transmitting the discovery signal corresponding to the service type of the D2D terminal group.
A device discovery device for terminal direct communication, which is applicable to a terminal, and includes:

a detecting unit, configured to detect a discovery message sent by another D2D terminal;

a processing unit, configured to parse the discovery message to simultaneously discover the D2D terminal group when determining that the other D2D terminal is a proxy terminal of a D2D terminal group composed of multiple D2D terminals according to the discovery message All terminals in .
The device discovery device for terminal direct communication according to claim 21, wherein the processing unit is specifically configured to:

Parsing the discovery message according to a predefined parsing syntax; or

Interacting with the network side device to parse the discovery message; or

The discovery message is parsed by communicating with the other D2D terminals.
A terminal, comprising: the terminal comprises a communication bus, a transceiver, a memory, and a processor, wherein:

The communication bus is configured to implement connection communication between the transceiver device, the memory, and the processor;

The program stores a set of program codes, and the processor calls program code stored in the memory to perform the following operations:

The processor is configured to form a D2D terminal group with at least one D2D terminal having a predetermined positional relationship, and determine whether it can be a proxy terminal of the D2D terminal group;

The processor is further configured to: when determining to be the proxy terminal, send, by using the transceiver, a discovery message indicating the D2D terminal group, so that other D2D terminals can receive the discovery message according to the The discovery message simultaneously discovers all terminals in the D2D terminal group.
The terminal according to claim 23, wherein the step of determining, by the processor, whether it can be a proxy terminal of the terminal group comprises:

Sending a request as the proxy terminal to the at least one D2D terminal;

And determining, when the transceiver device receives the consent instruction fed back by the at least one D2D terminal, as the proxy terminal.
The terminal according to claim 24, characterized in that

The transceiver device is further configured to receive a D2D discovery identifier sent by each D2D terminal in the at least one D2D terminal;

The processor is further configured to store the D2D discovery identifier sent by each D2D terminal.
The terminal according to claim 25, wherein the processor is further configured to:

Mapping a D2D discovery identifier of all D2D terminals in the D2D terminal group to a virtual D2D group discovery identifier; or

Mapping the D2D discovery identifier of each D2D terminal to a virtual D2D discovery identifier.
The terminal according to claim 25, wherein the processor is further configured to:

And generating the discovery message according to a D2D discovery identifier of all D2D terminals in the D2D terminal group, a number of D2D terminals in the D2D terminal group, and a quantity of resources that the discovery message can occupy.
The terminal according to any one of claims 23-27, wherein the processor is further configured to:

Detecting whether each D2D terminal in the at least one D2D terminal leaves the D2D terminal group;

The discovery message is updated upon detecting that any of the at least one D2D terminal leaves the D2D terminal group.
The terminal according to claim 28, wherein said processor detects said said The step of whether each D2D terminal leaves the D2D terminal group specifically includes:

Transmitting an inquiry signal to each of the D2D terminals in real time or periodically to determine whether each of the D2D terminals leaves the D2D terminal group according to whether the feedback information of each D2D terminal is received; or

Transmitting control signaling to each of the D2D terminals such that the D2D terminal of each of the D2D terminals sends a notification message to the proxy terminal when leaving the D2D terminal group; or

Whether each of the D2D terminals leaves the D2D terminal group is determined according to whether channel measurement information and/or synchronization information fed back by each D2D terminal can be received.
A terminal, comprising: the terminal comprises a communication bus, a transceiver, a memory, and a processor, wherein:

The communication bus is configured to implement connection communication between the transceiver device, the memory, and the processor;

The program stores a set of program codes, and the transceiver device and the processor call program code stored in the memory to perform the following operations:

The processor, configured to form a D2D terminal group with at least one D2D terminal having a predetermined positional relationship;

The transceiver device is configured to receive a request message sent by any D2D terminal in the D2D terminal group as a proxy terminal of the D2D terminal group;

The transceiver device is further configured to feed back a consent instruction to the any D2D terminal, and send its own D2D discovery identifier to the any D2D terminal, where the any D2D terminal generates and sends the D2D. The discovery message of the terminal group.
The terminal according to claim 30, wherein the transceiver device is further configured to:

After feeding back the consent command to any of the D2D terminals, stopping transmitting the discovery signal corresponding to the service type of the D2D terminal group.
A terminal, comprising: the terminal comprises a communication bus, a transceiver, a memory, and a processor, wherein:

The communication bus is configured to implement connection communication between the transceiver device, the memory, and the processor;

The program stores a set of program codes, and the transceiver device and the processor call program code stored in the memory to perform the following operations:

The processor is configured to detect a discovery message sent by another D2D terminal;

The processor is further configured to: when determining, according to the discovery message, that the other D2D terminal is a proxy terminal of a D2D terminal group composed of a plurality of D2D terminals, parse the discovery message to simultaneously discover the D2D All terminals in the terminal group.
The terminal according to claim 32, wherein the step of the processor parsing the discovery message comprises:

Parsing the discovery message according to a predefined parsing syntax; or

Interacting with the network side device to parse the discovery message; or

The discovery message is parsed by communicating with the other D2D terminals.