WO2015003591A1

WO2015003591A1 - Method and apparatus for releasing resource

Info

Publication number: WO2015003591A1
Application number: PCT/CN2014/081727
Authority: WO
Inventors: 张娟; 周燕飞
Original assignee: 电信科学技术研究院
Priority date: 2013-07-08
Filing date: 2014-07-07
Publication date: 2015-01-15
Also published as: CN104284449B; CN104284449A

Abstract

Disclosed are a method and an apparatus for releasing a resource. The method of an embodiment of the present application comprises: a first terminal determining that a direct communication path to a second terminal is stopped being used; and the first terminal releasing a resource saved by the first terminal and related to the direct communication path, and the first terminal requesting a first base station where the first terminal is located to perform a process of releasing the resource related to the direct communication path. In this manner, when a direct communication path between two UEs is stopped being used, the embodiment of the present application provides a specific solution to solve the problem of how to release, on a network side and a UE side, a resource related to the direct communication path.

Description

The present invention claims the priority of the Chinese patent application filed on July 8, 2013, the Chinese Patent Office, the application No. 201310284775.1, entitled "A Resource Release Method and Apparatus", the entire contents of which is incorporated herein by reference. This is incorporated herein by reference. TECHNICAL FIELD The present application relates to the field of communications technologies, and in particular, to a resource release method and apparatus in a path switching from a direct communication path to a communication path via a core network. Communication process between the two terminals BACKGROUND The 3rd Generation Partnership Project ^{(The 3 rf Generation Partnership, 3GPP} ) defined in its data channel shown in FIG. Referring, UEl (User Equipment, UE 1 ; user equipment, known as the terminal Sending data to e B for its service, and the e B will pass the data to the core network device Serving Gateway (SGW) and Packet Data Network Gateway (PDN GW; PGW GW; The PGW will route the data to the PGW and the SGW serving the UE1 according to the route representation of the UE1, and the SGW serving the UE2 will transmit the data to the eNB of the UE2, and then transmit the data to the UE2 through the eNB. The example shown in FIG. 1 is a scenario when the SGW and the PGW of the UE1 and the UE2 are the same, and the process of routing the data to the PGW serving the UE2 by the PGW serving the UE1 is omitted.

It can be seen from the communication process shown in FIG. 1 that even if the positions between the two terminals are very close, the communication data needs to reach the opposite end via the eNB and the core network device of the respective services, and the communication delay is very large, and Will occupy the resources of the network. Therefore, 3GPP is now studying communication technology between neighboring devices, that is, if the two parties are close to each other, it is possible to realize direct communication between two UEs or to perform fast communication between two UEs only by means of eNB transmission.

2A shows a data transmission path between terminals after implementing proximity communication. In the figure, UE1 and UE2 can directly perform data transmission without going through any network device; FIG. 2B shows another terminal that implements proximity communication. The data transmission path between the UE1 and the UE2 is connected to the same eNB, and the UE1 and the UE2 can forward data only through the eNB without routing the data to the core network for forwarding. The data transmission methods of the above two direct communication paths (also called adjacent communication paths) can reduce the delay of data transmission and save network resources, especially the network resources of the core network.

According to current protocol requirements, the network support UE has both a communication path transmission mode via the core network and a direct communication path transmission mode not via the core network. When two UEs are adjacent, the network can switch a certain user service session from the communication path via the core network to the direct communication path; when the direct communication path cannot be maintained, the service data flow path on the direct communication path can also be switched to Via the communication path of the core network. In addition, the path of the service data flow between the direct communication path and the communication path via the core network should not affect other activated service data streams. ring.

The operator can control and allocate resources for the direct communication path to the UE. To avoid resource waste, the current protocol requires that after the path switching process from the direct communication path to the communication path of the core network occurs, the network side and the UE side The saved resources and context information for the direct communication path need to be released, but there is currently no specific solution.

In summary, at present, when the communication path between two UEs is switched from the direct communication path to the communication path via the core network, the resources and context information for the direct communication path saved by the network side and the UE side are Release, there is no specific solution. SUMMARY OF THE INVENTION Embodiments of the present application provide a resource release method and apparatus in a path switching from a direct communication path to a communication path via a core network.

A resource release method provided by an embodiment of the present application, the method includes:

The first terminal determines to terminate the direct communication path with the second terminal;

The first terminal releases the resource related to the direct communication path that is saved by itself, and the first terminal requests the first base station where the first terminal is located to perform a release process of the resource related to the direct communication path.

As an implementation manner, the first terminal first releases the resource related to the direct communication path that is saved by itself, and then requests the first base station to perform a release process of the resource related to the direct communication path.

As another implementation manner, the first terminal first requests the first base station to perform a release process of the resource related to the direct communication path, and after receiving the response message returned by the first base station, releasing the saved The resource related to the direct communication path, where the response message is sent after the first base station completes a release process of resources related to the direct communication path.

Based on the foregoing two different implementation manners, the first terminal releases the resources related to the direct communication path that are saved by the first terminal, and specifically includes:

The first terminal directly releases the resources related to the direct communication path that are saved by itself; or

The first terminal sends a resource release request to the second terminal, and after receiving the resource release response returned by the second terminal, releasing the resource related to the direct communication path saved by the first terminal, the resource release request And configured to request the second terminal to release a resource related to the direct communication path, where the resource release response is sent by the second terminal after completing a release process of a resource related to the direct communication path that is saved by itself Or,

The first terminal starts a configured timer, and when the timer expires, releases the resources related to the direct communication path that are saved by itself.

The first terminal starts a configured timer; Sending, by the first terminal, a resource release request to the second terminal;

If the resource release response returned by the second terminal is received before the timer expires, the first terminal releases the resource related to the direct communication path that is saved by itself, and closes the timer; otherwise, When the timer expires, the first terminal releases the resources related to the direct communication path that are saved by itself;

The resource release request is used to request the second terminal to release the resource related to the direct communication path, where the resource release response is related to the direct communication path that the second terminal completes itself. The resource is sent after the release process.

In an implementation, the sending, by the first terminal, the resource release request to the second terminal, specifically: the first terminal, by using a direct communication interface with the second terminal, to the second terminal Send the resource release request.

In an implementation, the method further includes:

The first terminal receives a response message returned by the first base station, where the response message is used to notify the first terminal that the first base station has completed a release process of resources related to the direct communication path.

Another resource release method provided by the embodiment of the present application includes:

The first base station where the first terminal is located receives the request information sent by the first terminal, and the request information is used to request the first base station to perform a direct communication path between the first terminal and the second terminal. a release process of resources; the first base station performs a release process of resources related to the direct communication path.

In an implementation, after the first base station completes a release process of the resource related to the direct communication path, the method further includes:

The first base station sends a response message to the first terminal, where the response message is used to notify the first terminal that the first base station has completed the release process of resources related to the direct communication path.

As a specific application scenario, if the first base station and the second base station where the second terminal is located are the same base station, the first base station performs a release process of the resource related to the direct communication path, and specifically includes:

Receiving the request information sent by the first terminal, and receiving the request information sent by the second terminal for requesting the first base station to perform a release process of a resource related to the direct communication path, where Decoding the first base station to release its own saved resources related to the direct communication path; or

Upon receiving the request information sent by the first terminal, the first base station releases the resources that are saved by itself and related to the direct communication path.

As another specific application scenario, if the first base station and the second base station where the second terminal is located are different base stations, and the first base station and the second base station have an interface connection, the The first base station performs a release process of the resource related to the direct communication path, and specifically includes:

Upon receiving the request information sent by the first terminal, the first base station releases the resource that is saved by itself and is related to the direct communication path; or Upon receiving the request information sent by the first terminal, the first base station releases the resource related to the direct communication path that is saved by itself, and the first base station requests the second base station by using the interface. And releasing the resource related to the direct communication path, where the second base station sends a response message to the first base station after completing a release process of the resource related to the direct communication path.

In another specific application scenario, if the first base station and the second base station where the second terminal is located are different base stations, and there is no interface connection between the first base station and the second base station, The process of releasing the resources related to the direct communication path by the first base station includes:

Upon receiving the request information sent by the first terminal, the first base station releases the resource that is saved by itself and is related to the direct communication path; or

Upon receiving the request information sent by the first terminal, the first base station releases the resource related to the direct communication path that is saved by the first base station, and the first base station passes the first location where the first terminal is located. The mobility management entity MME and the second MME where the second terminal is located, requesting the second base station to release resources related to the direct communication path, where the second base station is related to the direct communication path After the release process of the resource, the second MME and the first MME send a response message to the first base station.

A terminal provided by an embodiment of the present application, where the terminal includes:

a first processing module, configured to determine that the direct communication path between itself and the second terminal is stopped;

And a second processing module, configured to release the resource related to the direct communication path that is saved by itself, and request the first base station where the first base station is located to perform a release process of the resource related to the direct communication path.

As an implementation manner, the second processing module is specifically configured to: first release a resource that is saved by the direct communication path, and then request the first base station to perform a release process of the resource related to the direct communication path.

As another implementation manner, the second processing module is specifically configured to: first request the first base station to perform a release process of the resource related to the direct communication path, after receiving the response message returned by the first base station, The self-saved resource related to the direct communication path is released, and the response message is sent after the first base station completes the release process of the resource related to the direct communication path.

Based on the foregoing two different implementation manners, the second processing module releases the resources related to the direct communication path that are saved by the second processing module, and specifically includes:

Directly releasing the resources associated with the direct communication path that are saved by itself; or

Sending a resource release request to the second terminal, and after receiving the resource release response returned by the second terminal, releasing the resource related to the direct communication path saved by the second terminal, where the resource release request is used to request the The second terminal releases the resource related to the direct communication path, where the resource release response is sent by the second terminal after completing the release process of the resource related to the direct communication path saved by the second terminal; or

The configured timer is started, and when the timer expires, the resources related to the direct communication path saved by itself are released. Based on the foregoing two different implementation manners, the second processing module releases the resources related to the direct communication path that are saved by the second processing module, and specifically includes:

Start the configured timer;

Sending a resource release request to the second terminal;

If the resource release response returned by the second terminal is received before the timer expires, the resource related to the direct communication path saved by itself is released, and the timer is turned off; otherwise, the timer is When timed out, releasing the resources saved by itself and related to the direct communication path;

In an implementation, the second processing module is specifically configured to:

The resource release request is sent to the second terminal through a direct communication interface with the second terminal. In an implementation, the second processing module is further configured to:

Receiving a response message returned by the first base station, where the response message is used to notify the first base station that the release process of resources related to the direct communication path has been completed.

A base station provided by an embodiment of the present application, where the base station includes:

a receiving module, configured to receive request information sent by the first terminal, where the request information is used to request to perform a release process of a resource related to a direct communication path between the first terminal and the second terminal;

And a processing module, configured to perform a release process of resources related to the direct communication path.

In an implementation, the processing module is further configured to:

After completing the release process of the resource related to the direct communication path, sending a response message to the first terminal, where the response message is used to notify the first terminal that the resource related to the direct communication path has been completed. The release process.

As a specific application scenario, if the second base station where the second terminal is located is the same base station, the processing module performs a release process of the resource related to the direct communication path, specifically:

And when the receiving module receives the request information sent by the first terminal, releasing the resource that is saved by the first terminal and related to the direct communication path; or

When the receiving module receives the request information sent by the first terminal, and receives the request information sent by the second terminal for requesting to perform the release process of the resource related to the direct communication path, releasing the self-storing Resources associated with the direct communication path.

As another specific application scenario, if the second base station where the second terminal is located is a different base station, and an interface connection exists with the second base station, the processing module performs a related to the direct communication path. The release process of resources is specifically as follows: When the receiving module receives the request information sent by the first terminal, releasing the resource that is saved by itself and related to the direct communication path; or

When the receiving module receives the request information sent by the first terminal, releasing the resource related to the direct communication path that is saved by itself, and requesting, by the interface, the second base station to release the direct communication a path-related resource; wherein, the second base station sends a response message after completing a release process of the resource related to the direct communication path.

In another specific application scenario, if the second base station where the second terminal is located is a different base station, and there is no interface connection with the second base station, the processing module performs related to the direct communication path. The release process of the resources, specifically:

When the receiving module receives the request information sent by the first terminal, releasing the resource related to the direct communication path that is saved by the first terminal, and the first MME and the second And the second MME, where the terminal is located, requests the second base station to release resources related to the direct communication path, where the second base station sends a response message after completing a release process of resources related to the direct communication path.

The structure and processing manner of the terminal provided by the embodiment of the present application are described below in conjunction with the specific hardware structure.

The terminal at least includes: a memory, a processor, and an antenna; wherein:

The memory stores at least resources related to a direct communication path between itself and the second terminal, and the resources related to the direct communication path include at least resources allocated for the direct communication and context information corresponding to the direct communication.

The processor deletes a resource related to the direct communication path saved in the memory when determining that the direct communication path between itself and the second terminal is terminated, and sends the request information to the first base station through the antenna to request the first base station A release process of resources related to the direct communication path is performed.

When performing the foregoing process, the processor may first delete the resource related to the direct communication path saved in the memory, and then send the request information to the first base station by using the antenna; or send the request information to the first base station through the antenna first, and After the antenna receives the response message returned by the first base station, the resource related to the direct communication path saved in the memory is deleted.

When the processor performs the deletion of the resources related to the direct communication path saved in the memory, the processor specifically includes the following methods:

Directly deleting the resources related to the direct communication path saved in the memory; or

First, the resource release request is sent to the second terminal by using the antenna, and after the antenna receives the resource release response returned by the second terminal, the resource related to the direct communication path saved in the memory is deleted; or

The configured timer is started first, and when the timer expires, the resources related to the direct communication path saved in the memory are deleted.

Of course, the processor may also use the combination of the explicit signaling and the timer to delete the resources related to the direct communication path saved in the memory. For details, refer to the description of the foregoing method, and details are not described herein again. The structure and processing manner of the base station provided by the embodiment of the present application are described below in conjunction with the specific hardware structure.

The base station at least includes: a memory, a processor, and an antenna; wherein:

The memory stores at least resources related to a direct communication path of each terminal of the service, and related information of a communication path of each terminal of the service via the core network, where the resources related to the direct communication path include at least resources allocated for the direct communication, And context information corresponding to the direct communication.

The processor performs a release process of a resource related to the direct communication path according to the request information sent from the terminal, and services the antenna through the antenna after completing the release process of the resource related to the direct communication path. The terminal sends a response message.

The processor performs a release process of the resource related to the direct communication path, and specifically includes:

1. If the second base station where the second terminal is located is the same base station, the processor executes:

When receiving the request information sent by the first terminal through the antenna, deleting the resource related to the direct communication path saved in the memory; or

When the request information transmitted by the first terminal and the second terminal is respectively received through the antenna, the resource related to the direct communication path stored in the memory is deleted.

2. If the second base station where the second terminal is located is a different base station and has an interface connection with the second base station, the processor executes:

Receiving, by the antenna, the request information sent by the first terminal, deleting the resource related to the direct communication path saved in the memory, and instructing the antenna to send a request to the second base station by using the interface, to request the second base station to release the a direct communication path related resource; wherein the second base station sends a response message after completing a release process of the resource related to the direct communication path.

3. If the second base station where the second terminal is located is a different base station, and there is no interface connection with the second base station, the processor executes:

When receiving the request information sent by the first terminal by using the antenna, deleting the resource related to the direct communication path saved in the memory, and indicating that the antenna passes the first MME where the first terminal is located and the second MME where the second terminal is located Sending a request to the second base station to request the second base station to release its own saved resources related to the direct communication path; wherein, the second base station sends a response message after completing the release process of the resource related to the direct communication path.

In the embodiment of the present application, the first terminal determines that the direct communication path with the second terminal is terminated; the first terminal releases the resource related to the direct communication path that is saved by the first terminal, and the first terminal requests the first base station where the first terminal is located to perform The release process of resources associated with the direct communication path. Thus when the direct communication path between the two UEs is terminated, The UE side provides a specific solution for how to release the resources related to the direct communication path. In the embodiment of the present application, the first base station where the first terminal is located receives the request information sent by the first terminal, and the request information is used to request the first base station to perform resources related to the direct communication path between the first terminal and the second terminal. Release process; the first base station performs a release process of resources associated with the direct communication path. Therefore, when the direct communication path between the two UEs is terminated, the embodiment of the present application provides a specific solution for how to release the resources related to the direct communication path. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic diagram of a communication path between two user equipments via a core network in the prior art;

2A is a schematic diagram of a direct communication path between two user equipments defined in an existing protocol;

2B is a schematic diagram of a direct communication path between two user equipments that are defined by an eNB according to an existing protocol; FIG. 3 is a schematic flowchart of a resource release method according to an embodiment of the present disclosure;

4 is a schematic diagram of signaling interaction between a first terminal and a second terminal according to an embodiment of the present disclosure;

FIG. 5 is a schematic flowchart of another resource release method according to an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart diagram of Embodiment 1 provided by the present application;

FIG. 7 is a schematic flowchart diagram of Embodiment 2 provided by the present application;

8A is a schematic flowchart of Embodiment 3 provided by the present application;

FIG. 8B is another schematic flowchart of Embodiment 3 provided by the present application; FIG.

FIG. 9 is a schematic flowchart diagram of Embodiment 4 provided by the present application;

10 is a schematic flowchart of Embodiment 5 provided by the present application;

FIG. 11 is a schematic diagram of a terminal according to an embodiment of the present application;

FIG. 12 is a schematic diagram of a base station according to an embodiment of the present application;

FIG. 13 is a schematic diagram of another terminal according to an embodiment of the present application;

FIG. 14 is a schematic diagram of another base station according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present application will be further described in detail with reference to the accompanying drawings.

Referring to FIG. 3, a resource release method provided by an embodiment of the present application includes the following steps:

Step 31: The first terminal determines to terminate the direct communication path with the second terminal.

Specifically, it is assumed that the first terminal and the second terminal use the direct communication path to transmit the data stream, if the direct communication between the first terminal and the second terminal ends, or the first terminal and the second terminal do not meet the setting. The direct communication condition, the first terminal determines that the direct communication path is terminated. For example, the set direct communication condition may be that the distance between the first terminal and the second terminal satisfies the set condition, for example, the distance between the first terminal and the second terminal is not greater than a set threshold; The link shield of the direct communication path between the first terminal and the second terminal is higher than a set threshold; and so on.

Step 32: The first terminal releases the resource that is saved by the direct communication path, and the first terminal requests the first base station where the first terminal is located to perform a release process of the resource related to the direct communication path.

In the embodiment of the present application, the resources related to the direct communication path include, but are not limited to, one or more of the following information: a resource allocated to the direct communication path, and context information corresponding to the direct communication path.

In an implementation, after the first terminal determines that the direct communication path between the second terminal and the second terminal is terminated, the method further includes:

The first terminal switches the data stream on the direct communication path to a communication path with the second terminal via the core network.

It should be noted that, if the method further includes a path switching process, step 32 may be performed before the path switching process, or may be performed after the path switching process is completed.

In an implementation, further, after step 32, the method further includes:

The first terminal receives a response message returned by the first base station, where the response message is used to notify the first terminal that the first base station has completed the release process of the resource related to the direct communication path.

Specifically, after receiving the request information of the first terminal, the first base station performs a release process of the resource related to the direct communication path, and after completing the release process of the resource related to the direct communication path, sends the information to the first terminal. Responding to the message, to inform the first terminal that it has completed the release process of the resources related to the direct communication path.

In the embodiment of the present application, the first terminal may be the initiator device of the direct communication, or may be the peer device of the direct communication, specifically:

If the first terminal is the originating device of the direct communication, the second terminal is the peer device of the direct communication; if the first terminal is the peer device of the direct communication, the second terminal is the initiator of the direct communication device.

As a preferred implementation manner, the first terminal is an initiator device of the direct communication.

In the implementation, step 32 further includes the following two specific implementation manners:

In a first implementation manner, after determining that the direct communication path with the second terminal is terminated, the first terminal first releases the resource related to the direct communication path that is saved by itself, and then requests the first base station to perform the direct communication path. The release process of related resources;

In this implementation manner, the first terminal may release the resources related to the direct communication path that are saved by itself according to any of the following methods:

Method 1: The first terminal directly releases the resources related to the direct communication path that are saved by itself;

Specifically, after determining that the direct communication path between the second terminal and the second terminal is terminated, the first terminal directly releases the resources related to the direct communication path that are saved by itself. Method 2: Release the direct communication path by explicit signaling, specifically:

The first terminal sends a resource release request to the second terminal, and after receiving the resource release response returned by the second terminal, releasing the resource related to the direct communication path saved by the second terminal, where the resource release request is used to request the second Transmitting, by the terminal, a resource related to the direct communication path, where the resource release response is sent by the second terminal after releasing the resource related to the direct communication path saved by the second terminal;

Specifically, after determining that the direct communication path with the second terminal is terminated, the first terminal sends a resource release request to the second terminal; after receiving the resource release request, the second terminal releases the saved data and the direct A resource related to the communication path, and after completing the release process, returning a resource release response to the first terminal; after receiving the resource release response, the first terminal releases the resource that is saved by the direct communication path.

Preferably, the first terminal sends a resource release request to the second terminal by using a direct communication interface with the second terminal. Correspondingly, after completing the release process of the resource related to the direct communication path saved by the second terminal, the second terminal returns a resource release response to the first terminal by using the directly communicated interface.

Method 3: The direct communication path is released by configuring a timer, which is specifically:

The first terminal starts the configured timer, and when the timer expires, releasing the resource that is saved by the direct communication path;

Specifically, when the first terminal determines to terminate the direct communication path with the second terminal, or completes a path switching process from the direct communication path to the communication path via the core network, the configured timer is started, where When the timer expires, it releases its own saved resources related to the direct communication path.

Correspondingly, the second terminal also uses the method to release the resources related to the direct communication path saved by the second terminal. Specifically, the second terminal determines to terminate the direct communication path with the first terminal, or completes the direct When the communication path to the path switching process via the communication path of the core network, the configured timer is started, and when the timer expires, the resources related to the direct communication path saved by itself are released.

Method 4: Combining the explicit signaling and the configuration timer, releasing the direct communication path, specifically including the following two situations: Case 1: The first terminal starts the configured timer, and sends a resource release request to the second terminal, if Receiving the resource release response returned by the second terminal before the timer expires, releasing the resource related to the direct communication path saved by the timer, and closing the timer;

Specifically, the first terminal starts the configured timer when determining that the direct communication path with the second terminal terminates use, or completes a path switching process from the direct communication path to the communication path via the core network; During the period, the resource release request may be sent to the second terminal. If the resource release response returned by the second terminal is received before the timer expires, the resource related to the direct communication path saved by itself is released, and the timer is closed.

Correspondingly, the processing on the second terminal side includes the following two types:

First, when the second terminal determines to terminate the direct communication path with the first terminal, or completes the path switching process from the direct communication path to the communication path via the core network, the configured timer is also started; During this period, if Receiving the resource release request sent by the first terminal, releasing the resource related to the direct communication path saved by itself, closing the timer, and returning a resource release response to the first terminal; otherwise, releasing the timer when the timer expires a resource that is itself associated with the direct communication path;

Second, the second terminal does not perform any operation before. When receiving the resource release request sent by the first terminal, the resource related to the direct communication path saved by itself is released, and the resource release response is returned to the first terminal.

Case 2: The first terminal starts the configured timer, sends a resource release request to the second terminal, and does not receive the resource release response returned by the second terminal before the timer expires, and then releases the self save when the timer expires. Resources associated with this direct communication path.

Specifically, the first terminal starts the configured timer when determining that the direct communication path with the second terminal terminates use, or completes a path switching process from the direct communication path to the communication path via the core network; During the period, the resource release request may be sent to the second terminal. If the resource release response returned by the second terminal is not received before the timer expires, when the timer expires, the saved relationship related to the direct communication path is released. Resources.

It should be noted that, in the foregoing method 1 and method 3, the first terminal only releases the resources related to the direct communication path that are saved by itself, and does not request the second terminal to release resources related to the direct communication path; In the fourth, the first terminal not only releases the resources saved by the direct communication path, but also requests the second terminal to release resources related to the direct communication path.

a second implementation manner, in determining that the direct communication path with the second terminal is terminated, the first terminal first requests the first base station to perform a release process of the resource related to the direct communication path, and receives the return from the first base station. After the response message, the resource related to the direct communication path saved by itself is released, where the response message is sent after the first base station completes the release process of the resource related to the direct communication path.

In this implementation manner, after receiving the response message returned by the first base station, the first terminal may release the resource related to the direct communication path saved by the method according to any one of the methods 1 to 4; For details of Method 4, refer to the detailed description above, and details are not described here.

In an implementation, the process of explicit signaling interaction between the first terminal and the second terminal, as shown in FIG. 4, includes the following steps:

Step 41: The first terminal sends a resource release request to the second terminal, to request the second terminal to release resources related to the direct communication path. Step 42: The second terminal receives the resource release request, releases the resource related to the direct communication path saved by itself, and returns a resource release response to the first terminal.

Based on the foregoing embodiment, the embodiment of the present application further provides another resource release method. As shown in FIG. 5, the method includes the following steps:

Step 51: The first base station where the first terminal is located receives request information sent by the first terminal, where the request information is used to request the first base station to perform a release process of resources related to a direct communication path between the first terminal and the second terminal. ;

Step 52: The first base station performs a release process of resources related to the direct communication path.

Further, after step 52, the method further includes:

After the first base station completes the release process of the resource related to the direct communication path, the first base station sends a response message to the first terminal, where the response message is used to notify the first terminal that the release process of the resource related to the direct communication path has been completed.

In the embodiment of the present application, the resources related to the direct communication include, but are not limited to, one or more of the following information: a resource allocated to the direct communication path, and context information corresponding to the direct communication path.

In an implementation, the embodiment of the present application includes the following three specific application scenarios:

In the first application scenario, the first base station and the second base station where the second terminal is located are the same base station.

In the application scenario, the first base station in step 52 performs a release process of the resource related to the direct communication path, and specifically includes the following two processing modes:

Mode A: The first base station receives the request information sent by the first terminal, and receives the request information sent by the second terminal for requesting the first base station to perform a release process of the resource related to the direct communication path, releasing itself The saved resources associated with the direct communication path;

In this manner, the first terminal and the second terminal respectively send request information to the first base station, to request the first base station to perform a release process of resources related to the direct communication path, where the first base station receives the first terminal and the first When the two terminals separately send the request information, the resources related to the direct communication path saved by themselves are released.

The interaction process between the terminal side and the network side in this mode will be described in detail below in conjunction with the preferred embodiment.

Embodiment 1 In this embodiment, UE1 and UE2 are both camped on e B, and UE1 (or UE2) determines the data on the direct communication path after determining that the direct communication path with UE2 (or UE1) is terminated. The flow is switched over to the communication path with UE2 (or UE1) via the core network. Referring to Figure 6, the resource release process includes the following:

Step 61: The UE1 sends a path switching notification to the eNB, notifying the eNB that the path switching process has been completed, and requesting the eNB to perform a release process of resources related to the direct communication path.

Step 61b: UE2 sends a path switching notification to the eNB, notifying the eNB that the path switching process has been completed, and requesting the eNB to perform a release process of resources related to the direct communication path.

In this embodiment, the order of execution of steps 61a and 61b is not limited.

Step 62: The eNB locally releases the direct communication path resource, that is, the eNB releases the resource that is saved by itself and is related to the direct communication path. Specifically, the e B releases the air interface resource allocated to the direct communication path between the UE 1 and the UE 2 and deletes the context information about the direct communication path saved by itself.

Step 63a: After completing the resource release process, the eNB returns a response message to UE1 to notify UE1 that the resource release is completed.

Step 63b: After completing the resource release process, the eNB returns a response message to the UE2 to notify the UE2 that the resource release is completed.

In this embodiment, the order of execution of steps 63a and 63b is not limited.

Method B: When receiving the request information sent by the first terminal, the first base station releases the resources related to the direct communication path that are saved by itself;

In this manner, the process of releasing the direct communication path by the first base station master network side;

Specifically: the first terminal sends the request information to the first base station when determining that the direct communication path between the second terminal and the second terminal is terminated; the first base station directly executes the network when receiving the request information sent by the first terminal The process of releasing the direct communication path by the side, that is, releasing the resources saved by itself and related to the direct communication path.

Embodiment 2 In this embodiment, UE1 and UE2 both reside in an eNB, and UE1 (or UE2), after determining that the direct communication path with UE2 (or UE1) is terminated, uses the data flow on the direct communication path. Switched to the communication path with UE2 (or UE1) via the core network. Referring to Figure 7, the resource release process is as follows:

Step 71: The UE1 sends a path switching notification to the eNB, notifying the eNB that the path switching process has been completed, and requesting the eNB to perform a release process of resources related to the direct communication path.

Step 72: The eNB locally releases the direct communication path resource, that is, the eNB releases the resource related to the direct communication path. Specifically, the eNB releases the air interface resource allocated to the direct communication path between the UE 1 and the UE 2, and deletes the self-preserved information about the Context information for the direct communication path.

Step 73: After completing the resource release process, the eNB returns a response message to the UE1 to notify the UE1 that the resource release is complete.

In the above application scenario, the first base station specifically performs a release process of the resource related to the direct communication path, which may be specified in the protocol, or may be negotiated and determined by the terminal and the base station, as long as the terminal (the first terminal and the The second terminal) may be identical to the understanding of the base station (the first base station and the second base station). In the second application scenario, the second base station where the first base station and the second terminal are located are different base stations, and an interface connection exists between the first base station and the second base station.

Manner 1: After receiving the request information sent by the first terminal, the first base station releases the resources related to the direct communication path that are saved by itself. In this manner, the first terminal sends the request information to the first base station to request the first base station to perform a release process of the resource related to the direct communication path; similarly, the second terminal sends the request information to the second base station to request The second base station performs a release process of the resource related to the direct communication path; when receiving the request information sent by the first terminal, the first base station releases the resource related to the direct communication path saved by itself; similarly, the second When receiving the request information sent by the second terminal, the base station releases the resources stored by itself and related to the direct communication path.

Embodiment 3 In this embodiment, UE1 resides in eNB1, UE2 resides in eB2, and UE1 (or UE2) determines the direct communication path after terminating the direct communication path with UE2 (or UE1). The upper data stream is switched over to the communication path with UE2 (or UE1) via the core network. Referring to FIG. 8A, the interaction between UE1 and eNB1 in the resource release process is as follows:

Step 81a: The UE1 sends a path switching notification to the eNB1, notifying the eNB1 that the path switching process has been completed, and requesting the eNB1 to perform a release process of resources related to the direct communication path.

Step 82a: The eNB1 locally releases the direct communication path resource, that is, the eNB1 releases the resource that is saved by itself and is related to the direct communication path;

Specifically, the eNB1 releases the air interface resource allocated to the direct communication path and deletes the context information about the direct communication path saved by itself.

Step 83a: After completing the resource release process, the eNB1 returns a response message to the UE1.

In this embodiment, as shown in FIG. 8B, the interaction between the UE2 and the eNB2 in the resource release process is as follows: Step 81b: The UE2 sends a path switching notification to the eB2, notifying that the e B2 path switching process is completed, and requesting e B2 to perform a release process of resources associated with the direct communication path;

Step 82b: eNB2 locally releases the direct communication path resource, that is, e B2 releases the resource that is saved by itself and is related to the direct communication path;

Specifically, e B2 releases the air interface resource allocated to the direct communication path and deletes the context information about the direct communication path saved by itself.

Step 83b: After completing the resource release process, e B2 returns a response message to UE2.

Manner 2: After receiving the request information sent by the first terminal, the first base station releases the resources related to the direct communication path that is saved by the first base station, and the first base station requests the second base station by using an interface with the second base station. Release the resources associated with this direct communication path.

In this manner, the process of releasing the direct communication path by the first base station master network side.

In this mode, the execution order of the above two processes is not limited, specifically:

The first base station may first release the resource related to the direct communication path that is saved by the first base station, and then request the second base station to release the resource related to the direct communication path of the second terminal by using the interface;

Specifically: the first terminal sends request information to the first base station; the first base station receives the request sent by the first terminal When the information is first, the resource related to the direct communication path saved by the first base station is released, and then the first request message is sent to the second base station by using an interface with the second base station to request the second base station to release the direct communication path. resource of.

Further, the second base station sends an answer message to the first base station after completing the release process of the resource related to the direct communication path, to notify the first base station that the release process of the resource related to the direct communication path has been completed.

Further, after receiving the response message, the first base station determines that the second base station has completed the release process of the resource related to the direct communication path, and the first base station returns a response message to the first terminal to notify the first terminal itself. The release process of the resources associated with the direct communication path has been completed.

The first base station may first request the second base station to release the resources related to the direct communication path through the interface, and release the resources related to the direct communication path saved by the second base station when receiving the response message returned by the second base station. The response message is sent by the second base station after completing the release process of the direct communication path.

Specifically, the first terminal sends the request information to the first base station; when receiving the request information sent by the first terminal, the first base station sends a first request message to the second base station to request the second base station to release the direct request. a resource related to the communication path; when receiving the first request message, the second base station releases the resource related to the direct communication path that is saved by itself, and returns a response message to the first base station by using an interface with the first base station In order to notify the first terminal that the release process of the resource related to the direct communication path has been completed; when receiving the response message, the first base station releases the resource saved by itself and related to the direct communication path.

Further, after releasing the resource related to the direct communication path saved by the first base station, the first base station returns a response message to the first terminal to notify the first terminal that the release process of the resource related to the direct communication path has been completed.

Embodiment 4 In this embodiment, UE1 resides in e B 1 , UE2 resides in e B2 , and an interface connection exists between e B 1 and eNB 2, and UE1 (or UE2) determines to be associated with UE2 (or UE1). After the direct communication path is terminated, the data stream on the direct communication path is switched to the communication path with the UE2 (or UE1) via the core network. . Referring to Figure 9, the resource release process is as follows:

Step 91: UE1 sends a path switching notification to e Bl, notifying that the e Bl path switching process has been completed, and requesting e Bl to perform a release process of resources related to the direct communication path;

Step 92: The eNB1 deletes the context information of the UE1 saved by the UE1 on the direct communication path and the air interface resource allocated to the direct communication path, and the eNB1 sends a release direct communication path resource message to the eB2 to request the e B2 to delete the saved information. Context information about the direct communication path and air interface resources allocated to the direct communication path.

Step 93: After completing the resource release, the e B2 returns a response message indicating that the resource release is complete to the eNB 1. Step 94: The eNB1 returns a response message indicating that the resource release is completed to the UE1.

In the above application scenario, the first base station specifically performs a release process of the resource related to the direct communication path, which may be specified in the protocol, or may be negotiated and determined by the terminal and the base station, as long as the terminal (the first terminal and the The second terminal) may be identical to the understanding of the base station (the first base station and the second base station). In a third application scenario, the second base station where the first base station and the second terminal are located are different base stations, and there is no interface connection between the first base station and the second base station.

Manner 1: When receiving the request information sent by the first terminal, the first base station releases the resource that is saved by itself and is related to the direct communication path.

In this manner, the first terminal sends the request information to the first base station to request the first base station to perform a release process of the resource related to the direct communication path; similarly, the second terminal sends the request information to the second base station to request The second base station performs a release process of the resource related to the direct communication path; when receiving the request information sent by the first terminal, the first base station releases the resource related to the direct communication path saved by itself; similarly, the second When receiving the request information sent by the second terminal, the base station releases the resources stored by itself and related to the direct communication path.

The method is the same as the mode 1 in the second application scenario. For details, refer to the description of the foregoing mode 1, and details are not described herein again.

In the mode 2, when receiving the request information sent by the first terminal, the first base station releases the resources related to the direct communication path saved by the first base station, and the first base station passes the first MME where the first terminal is located, and the second terminal The second MME requests the second base station to release resources related to the direct communication path.

The first base station may first release the resources related to the direct communication path that are saved by the first base station, and then request the second base station to release the resources related to the direct communication path by using the first MME and the second MME;

Specifically, if the first MME and the second MME are the same MME, that is, the first terminal and the second terminal are in the same MME, the first terminal sends request information to the first base station; When the request information sent by the first terminal is sent, the resource related to the direct communication path saved by the first terminal is released, and then the first request information is sent to the first terminal and the MME where the second terminal resides to request the second base station to release the information. a resource related to the direct communication path; after receiving the first request information, the MME sends a second request message to the second base station to request the second base station to release resources related to the direct communication path;

If the first MME and the second MME are different MMEs, that is, the first terminal and the second terminal are in different MMEs, the first terminal sends request information to the first base station; the first base station receives the first MME. When the request information is sent by the terminal, the resource related to the direct communication path saved by the terminal is released, and then the first request information is sent to the first MME to request the second base station to release the resource related to the direct communication path; After receiving the first request information, sending the second request information to the second MME to request the second base station to release the resource related to the direct communication path; after receiving the second request information, the second MME is in the second The base station sends a third request message to request the second base station to release resources related to the direct communication path. Further, the second base station sends a response message after completing the release process of the resource related to the direct communication path, to indicate that the release process of the resource related to the direct communication path has been completed.

Specifically, if the first MME and the second MME are in the same MME, that is, the first terminal and the second terminal reside in the same MME, the second base station completes the release process of the resource related to the direct communication path. The first terminal and the MME where the second terminal resides send a first response message to notify the MME that the release process of the resource related to the direct communication path has been completed; after receiving the first response message, the MME Sending, by the base station, a second response message to notify the first base station that the second base station has completed the release process of the resource related to the direct communication path;

If the first MME and the second MME are different MMEs, that is, the first terminal and the second terminal camp on different MMEs, the second base station sends the second MME to the second MME after completing the release process of the resources related to the direct communication path. Sending a first response message to notify the second MME that the release process of the resource related to the direct communication path is completed; after receiving the first response message, the second MME sends a second response message to the first MME, to Notifying the first MME that the second base station has completed the release process of the resource related to the direct communication path; after receiving the second response message, the first MME sends a third response message to the first base station to notify the first base station The second base station has completed the release process of resources related to the direct communication path.

The first base station may first request the second base station to release the resources related to the direct communication path by using the first MME and the second MME, and release the self-save and the direct when receiving the response message returned by the second base station. Communication path related resources. The response message is sent by the second base station after completing the release process of the direct communication path.

Specifically, if the first MME and the second MME are in the same MME, that is, the first terminal and the second terminal are in the same MME, the first terminal sends request information to the first base station; When the first terminal sends the request information, the first request information is sent to the first terminal and the MME where the second terminal resides to request the second base station to release the resource related to the direct communication path; the MME receives the first After requesting the information, sending a third request message to the second base station to request the second base station to release resources related to the direct communication path; when receiving the third request message, the second base station releases the direct communication saved by the second base station a path-related resource, and sending a first response message to the MME, to notify the MME that the release process of the resource related to the direct communication path has been completed; after receiving the first response message, the MME sends the first response message to the first base station. Sending a second response message to notify the first base station that the second base station has completed the release process of the resource related to the direct communication path; the first base station is receiving When the second response message is sent, the resources related to the direct communication path saved by itself are released;

If the first MME and the second MME are different MMEs, that is, the first terminal and the second terminal are in different MMEs, the first terminal sends request information to the first base station; the first base station receives the first terminal. Sending the request information, first sending the first request information to the first MME, requesting the second base station to release resources related to the direct communication path; After receiving the first request information, the MME sends the second request information to the second MME to request the second base station to release the resources related to the direct communication path. After receiving the second request information, the second MME sends the second request information to the second MME. The second base station sends a third request message to request the second base station to release resources related to the direct communication path; when receiving the third request message, the second base station releases the resources related to the direct communication path that are saved by itself, And sending a first response message to the second MME, to notify the second MME that the release process of the resource related to the direct communication path is complete; after receiving the first response message, the second MME sends the first MME to the first MME. a second response message, to notify the first MME that the second base station has completed the release process of the resource related to the direct communication path; after receiving the second response message, the first MME sends a third response message to the first base station, to Notifying the first base station that the second base station has completed the release process of the resource related to the direct communication path; when the first base station receives the third response message, Put direct communication path associated with the resource itself saved.

Further, after releasing the resource related to the direct communication path of the first terminal saved by itself, the first base station returns a response message to the first terminal to notify the first terminal that the release of the resource related to the direct communication path is completed. process.

It should be noted that, if the first MME and the second MME are the same MME, that is, the first terminal and the second terminal are in the same MME, there is no interaction between the MMEs; if the first MME and the second MME For different MMEs, that is, the first terminal and the second terminal are camped on different MMEs, the first MME and the second MME need to perform interaction to complete the foregoing process.

Embodiment 5: UE1 resides in e Bl and MME1, UE2 resides in e B2 and MME2, e Bl and eNB2 are different base stations, and there is no interface connection between them, and MME1 and MME2 are different MMEs, UE1 (or UE2) After determining that the direct communication path between UE2 (or UE1) is terminated, the data stream on the direct communication path is switched over to the communication path with UE2 (or UE1) via the core network. As shown in Figure 10, the resource release process is as follows:

Step 101: UE1 sends a path switching notification to eNB1, notifying eNB1 that the path switching process has been completed, and requesting eB1 to perform a release process of resources related to the direct communication path;

Step 102: The eNB1 sends a release direct communication path resource message to the eB2 through the interface between the MME1 and the MME2, to request the eB2 to delete the context information of the UE2 on the direct communication path and the air interface resource allocated to the direct communication path.

Step 103, the MME1 sends the received release direct communication path resource message to the MME2;

Step 104: The MME2 sends the received release direct communication path resource message to e B2.

After the resource release is completed, the eB2 returns a response message indicating that the resource release is completed to the eNB1 through the interface between the MME2 and the MME1.

Step 106, the MME2 sends the received response message to the MME1;

Step 107: The MME1 sends the received response message to the eNB1.

Step 108: After receiving the response message returned by e B2, the eNB1 deletes the UE1 saved by itself in the direct communication. The context information on the path and the air interface resource allocated to the direct communication path, and return a response message indicating completion of the resource release to the UE1.

It should be noted that, in step 52, for the first implementation manner and the second implementation manner, the first terminal may use any one of the foregoing methods 1 to 4 to release the self-saved related to the direct communication path. The first base station may perform the release process of the resource related to the direct communication path in any one of the foregoing manners, that is, any one of the foregoing methods 1 to 4 may be performed with the first base station. Any one of the methods of releasing the resources related to the direct communication path is implemented in combination.

In the embodiment of the present application, the first terminal releases the resource related to the direct communication path saved by the first terminal, and the first terminal requests the first base station to perform the release process of the resource related to the direct communication path, which is not limited to the foregoing. The preferred method and manner can also be applied to other processing methods.

For example, if the first base station and the second base station are the same base station, then:

The first terminal, when determining that the direct communication path with the second terminal is terminated, releases the resource related to the direct communication path that is saved by itself, and the first terminal sends the request information to the first base station, where not in the step The execution order of the two processes is limited;

After receiving the request information, the first base station releases the saved resource related to the direct communication path, and the first base station requests the second terminal to release the resource related to the direct communication path saved by the first terminal, where the step is not The order of the two processes in the process is limited.

Further, the second terminal sends a feedback message to the first base station after completing the release process of the direct communication path.

Further, after receiving the feedback message, the first base station determines that the second terminal has completed the release process of the resource related to the direct communication path, and the first base station returns a response message to the first terminal to notify the first terminal itself. The release process of the resources associated with the direct communication path has been completed.

For another example, if the first base station and the second base station are different base stations, and the first base station and the second base station have an interface connection, the first terminal releases when the direct communication path between the first terminal and the second terminal is terminated. a resource that is associated with the direct communication path, and the first terminal sends the request information to the first base station, where the execution order of the two processes in the step is not limited;

After receiving the request information, the first base station releases the saved resource related to the direct communication path, and the first base station requests the second base station to release the resource related to the direct communication path through the interface, where the step is not The order of the two processes in the process is limited;

After receiving the request information sent by the first base station, the second base station releases the saved resource related to the direct communication path, and requests the second terminal to release the resource related to the direct communication path that is saved by the second terminal, where the step is not The order of the two processes in the process is limited.

Further, the second terminal sends a feedback message to the second base station after completing the release process of the direct communication path.

Further, after receiving the feedback message, the second base station determines that the second terminal has completed the connection with the direct communication path. The process of releasing the resource, the second base station returns a response message to the first base station by using the interface, to notify the first base station that the release process of the resource related to the direct communication path is completed, and the second terminal has completed the The release process of resources related to the direct communication path.

Further, after receiving the response message, the first base station returns a response message to the first terminal to notify the first terminal that the release process of the resource related to the direct communication path has been completed.

For another example, if the first base station and the second base station where the second terminal is located are different base stations, and there is no interface connection between the first base station and the second base station, then:

After receiving the request information, the first base station releases the resource related to the direct communication path that is saved by the first base station, and the first base station requests the first MME where the first terminal is located and the second MME where the second terminal is located. The second base station releases the resources related to the direct communication path, where the sequence of the two processes in the step is not limited;

Further, after receiving the feedback message, the second base station determines that the second terminal has completed the release process of the resource related to the direct communication path, and the second base station returns a response to the first base station by using the second MME and the first MME. a message, to inform the first base station that the release process of the resource related to the direct communication path has been completed, and the second terminal has completed the release process of the resource related to the direct communication path.

The above method processing flow can be implemented by a software program, which can be stored in a storage medium shield, and when the stored software program is called, the above method steps are performed.

Based on the same inventive concept, a terminal is provided in the embodiment of the present application. The principle of solving the problem is similar to the resource release method shown in FIG. 3, and therefore, the implementation of the terminal can be referred to the method shown in FIG. Implementation, repetition will not be repeated.

Referring to FIG. 11 , a terminal provided by an embodiment of the present application (the terminal corresponds to the first terminal mentioned in the foregoing method) End), the terminal includes:

The first processing module 111 is configured to determine that the direct communication path with the second terminal is terminated.

The second processing module 112 is configured to release the resource related to the direct communication path that is saved by itself, and request the first base station that the UE is in itself to perform a release process of the resource related to the direct communication path.

In an implementation, the second processing module 112 is specifically configured to:

First releasing the resource that is saved in the direct communication path, and then requesting the first base station to perform a release process of the resource related to the direct communication path; or

First, requesting the first base station to perform a release process of the resource related to the direct communication path, and after receiving the response message returned by the first base station, releasing the resource related to the direct communication path saved by itself, the response message is completed by the first base station Sent after the release process of the resource associated with the direct communication path.

In the implementation, the second processing module 112 releases the resources related to the direct communication path that are saved by the second processing module 112, and specifically includes: directly releasing the resources related to the direct communication path saved by itself; or

Sending a resource release request to the second terminal, and after receiving the resource release response returned by the second terminal, releasing the resource related to the direct communication path saved by the second terminal, where the resource release request is used to request the second terminal to release the direct communication a path-related resource, where the resource release response is sent by the second terminal after completing the release process of the resource related to the direct communication path that is saved by the second terminal; or

The configured timer is started, and when the timer expires, the resources related to the direct communication path saved by itself are released. Further, the second processing module 112 releases the resources that are saved by the direct communication path, and further includes: starting the configured timer;

Sending a resource release request to the second terminal;

If the resource release response returned by the second terminal is received before the timer expires, the resource related to the direct communication path saved by itself is released, and the timer is turned off; otherwise, when the timer expires, the self saved and the direct release are released. Communication path related resources;

The resource release request is used to request the second terminal to release the resource related to the direct communication path, where the resource release response is sent by the second terminal after completing the release process of the resource related to the direct communication path saved by the second terminal.

A resource release request is sent to the second terminal through a direct communication interface with the second terminal.

In an implementation, the second processing module 112 is further configured to:

Receiving a response message returned by the first base station, the response message is used to notify the first base station that the release process of the resource related to the direct communication path has been completed.

It should be noted that the terminal shown in FIG. 11 of the embodiment of the present application may be the initiator device of the direct communication, or For the peer device of the direct communication.

Based on the same inventive concept, a base station is also provided in the embodiment of the present application. The principle of the base station solving the problem is similar to the resource release method shown in FIG. 5 above. Therefore, the implementation of the base station can be referred to the method shown in FIG. Implementation, repetition will not be repeated.

Referring to FIG. 12, a base station is provided in the embodiment of the present application, where the base station is a base station where the first terminal resides, and the base station includes:

The receiving module 121 is configured to receive request information sent by the first terminal, where the request information is used to request to perform a release process of a resource related to a direct communication path between the first terminal and the second terminal;

The processing module 122 is configured to perform a release process of resources related to the direct communication path.

Further, the processing module 122 is further configured to:

After completing the release process of the resource related to the direct communication path, a response message is sent to the first terminal, the response message is used to notify the first terminal that the release process of the resource related to the direct communication path has been completed.

In the implementation, if the second base station where the second terminal is located is the same base station, the processing module 122 performs a release process of the resource related to the direct communication path, specifically:

When the receiving module 121 receives the request information sent by the first terminal, releasing the resource that is saved by itself and related to the direct communication path; or

Receiving the request information sent by the first terminal, and receiving the request information sent by the second terminal for requesting to perform the release process of the resource related to the direct communication path, releasing the saved direct communication path Related resources.

In an implementation, if the second base station where the second terminal is located is a different base station, and the interface is connected to the second base station, the processing module 122 performs a release process of the resource related to the direct communication path, specifically:

When receiving the request information sent by the first terminal, the receiving module 121 releases the resource related to the direct communication path that is saved by itself, and requests the second base station to release the direct communication path by using an interface with the second base station. The second base station sends a response message after completing the release process of the resource related to the direct communication path.

In an implementation, if the second base station where the second terminal is located is a different base station, and there is no interface connection with the second base station, the processing module 122 performs a release process of the resource related to the direct communication path, specifically:

When the receiving module 121 receives the request information sent by the first terminal, releasing the saved direct communication path with the first terminal Related resources, and requesting, by the first MME where the first terminal is located, and the second MME where the second terminal is located, to request the second base station to release resources related to the direct communication path, where the second base station completes direct communication with the A response message is sent after the release process of the path-related resource.

As shown in FIG. 13, the terminal 130 includes at least: a memory 131, a processor 132, and an antenna 133; wherein: the memory 131 stores at least a resource related to a direct communication path between itself and the second terminal, and the direct communication path The related resources include at least resources allocated for the direct communication and context information corresponding to the direct communication.

The processor 132 deletes the resource related to the direct communication path saved in the memory 131 when determining that the direct communication path between itself and the second terminal is terminated, and transmits the request information to the first base station through the antenna 133 to request The first base station performs a release procedure of resources related to the direct communication path.

The processor 132 may first delete the resource related to the direct communication path saved in the memory 131, and then send the request information to the first base station through the antenna 133; or send the request information to the first base station through the antenna 133. The information is requested, and after the antenna 133 receives the response message returned by the first base station, the resource related to the direct communication path saved in the memory 131 is deleted.

When the processor 132 performs the deletion of the resources related to the direct communication path stored in the memory 131, the processor 132 specifically includes the following methods:

Directly deleting the resources related to the direct communication path saved in the memory 131; or

First, the resource release request is sent to the second terminal by using the antenna, and after the antenna 133 receives the resource release response returned by the second terminal, the resource related to the direct communication path saved in the memory 131 is deleted; or

The configured timer is started first, and when the timer expires, the resources related to the direct communication path saved in the memory 131 are deleted.

Of course, the processor 132 can also delete the resources related to the direct communication path saved in the memory 131 by using the combination of the explicit signaling and the timer. For details, refer to the description of the foregoing method, and details are not described herein again.

The structure and processing manner of the base station provided by the embodiment of the present application are described below in conjunction with the specific hardware structure.

As shown in FIG. 14, the base station 140 includes at least: a memory 141, a processor 142, and an antenna 143; wherein: the memory 141 stores at least resources related to a direct communication path of each terminal of the service, and a core of each terminal of the service Information related to the communication path of the network, the resources related to the direct communication path include at least resources allocated for the direct communication and context information corresponding to the direct communication.

The processor 142 performs the direct communication path according to the request information sent by the terminal received by the antenna 143. The release process of the associated resource, and after completing the release process of the resource related to the direct communication path, the response message is sent to the terminal itself served by the antenna 143.

The processor 142 performs a release process of the resources related to the direct communication path, and specifically includes:

1. If the second base station where the second terminal is located is the same base station, the processor 142 performs:

When receiving the request information sent by the first terminal through the antenna 143, deleting the resource related to the direct communication path saved in the memory 141; or

When the request information transmitted by the first terminal and the second terminal is respectively received through the antenna 143, the resource associated with the direct communication path stored in the memory 141 is deleted.

2. If the second base station where the second terminal is located is a different base station and has an interface connection with the second base station, the processor 142 performs:

When the request information sent by the first terminal is received through the antenna 143, the resource related to the direct communication path saved in the memory 141 is deleted, and the indication antenna 143 sends a request to the second base station through the interface to request the second base station. Releasing resources associated with the direct communication path; wherein the second base station sends a response message after completing a release process of resources related to the direct communication path.

3. If the second base station where the second terminal is located is a different base station, and there is no interface connection with the second base station, the processor 142 performs:

When the request information sent by the first terminal is received by the antenna 143, the resource related to the direct communication path saved in the memory 141 is deleted, and the antenna 143 is indicated by the first MME where the first terminal is located and the second terminal where the second terminal is located. The second MME sends a request to the second base station to request the second base station to release the resource that is saved by the second base station and is related to the direct communication path. The second base station sends a response message after completing the release process of the resource related to the direct communication path. .

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the application can be in the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the application can be in the form of a computer program product embodied on one or more computer usable storage modules (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, a special purpose computer, an embedded processor or other programmable data processing device to generate a A machine that causes instructions executed by a processor of a computer or other programmable data processing device to generate means for implementing the functions specified in a block or blocks of a flow or a flow and/or a block diagram of the flowchart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It will be apparent that those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and modifications of

Claims

Rights request

1. A resource release method, characterized in that the method includes:

The first terminal determines that the direct communication path with the second terminal is terminated;

The first terminal releases the resources related to the direct communication path that it has saved, and the first terminal requests the first base station where it is located to perform a release process of the resources related to the direct communication path.

2. The method according to claim 1, characterized in that,

The first terminal first releases the resources related to the direct communication path that it has saved, and then requests the first base station to perform a release process of the resources related to the direct communication path; or,

The first terminal first requests the first base station to perform a release process of resources related to the direct communication path, and after receiving the response message returned by the first base station, releases the resources related to the direct communication path that it has saved. resources, and the response message is sent by the first base station after completing the release process of resources related to the direct communication path.

3. The method of claim 2, wherein the first terminal releases its own saved resources related to the direct communication path, specifically including:

The first terminal directly releases the resources related to the direct communication path that it saves; or,

The first terminal sends a resource release request to the second terminal, and after receiving the resource release response returned by the second terminal, releases the resources related to the direct communication path that it has saved, and the resource release request Used to request the second terminal to release resources related to the direct communication path. The resource release response is sent by the second terminal after completing the release process of the resources related to the direct communication path saved by the second terminal. ; or,

The first terminal starts a configured timer, and when the timer times out, releases its own saved resources related to the direct communication path.

4. The method of claim 2, wherein the first terminal releases its own saved resources related to the direct communication path, specifically including:

The first terminal starts the configured timer;

The first terminal sends a resource release request to the second terminal;

If the resource release response returned by the second terminal is received before the timer times out, the first terminal releases its own saved resources related to the direct communication path and closes the timer; otherwise, When the timer expires, the first terminal releases its own saved resources related to the direct communication path;

Wherein, the resource release request is used to request the second terminal to release resources related to the direct communication path, and the resource release response is when the second terminal completes its own saving of resources related to the direct communication path. Sent after the resource release process.

5. The method of claim 3 or 4, wherein the first terminal sends the resource release request to the second terminal, specifically including: The first terminal sends the resource release request to the second terminal through a direct communication interface with the second terminal.

6. The method of claim 1, wherein the method further includes:

The first terminal receives a response message returned by the first base station, and the response message is used to notify the first terminal that the first base station has completed the release process of resources related to the direct communication path.

7. A resource release method, characterized in that the method includes:

The first base station where the first terminal is located receives the request information sent by the first terminal, and the request information is used to request the first base station to perform a process related to the direct communication path between the first terminal and the second terminal. Resource release process; The first base station performs a resource release process related to the direct communication path.

8. The method of claim 7, wherein after the first base station completes the release process of resources related to the direct communication path, the method further includes:

The first base station sends a response message to the first terminal, and the response message is used to notify the first terminal that the first base station has completed the release process of resources related to the direct communication path.

9. The method according to claim 7 or 8, characterized in that, if the first base station and the second base station where the second terminal is located are the same base station, the first base station executes the direct communication path with the The related resource release process specifically includes:

When receiving the request information sent by the first terminal and receiving the request information sent by the second terminal for requesting the first base station to perform a release process of resources related to the direct communication path, the The first base station releases its own saved resources related to the direct communication path; or,

When receiving the request information sent by the first terminal, the first base station releases the resources related to the direct communication path that it has saved.

10. The method of claim 7 or 8, wherein if the first base station and the second base station where the second terminal is located are different base stations, and the first base station and the second base station If there is an interface connection between them, the first base station performs a release process of resources related to the direct communication path, which specifically includes:

When receiving the request information sent by the first terminal, the first base station releases the resources related to the direct communication path that it has saved; or,

When receiving the request information sent by the first terminal, the first base station releases the resources related to the direct communication path that it has saved, and the first base station requests the second base station through the interface. Release resources related to the direct communication path; wherein, the second base station sends a response message to the first base station after completing the release process of resources related to the direct communication path.

11. The method of claim 7 or 8, wherein if the first base station and the second base station where the second terminal is located are different base stations, and the first base station and the second base station If there is no interface connection between them, the first base station performs a release process of resources related to the direct communication path, which specifically includes: When receiving the request information sent by the first terminal, the first base station releases the resources related to the direct communication path that it has saved; or,

When receiving the request information sent by the first terminal, the first base station releases the resources related to the direct communication path that it has saved, and, the first base station passes the first terminal where the first terminal is located. The mobility management entity MME and the second MME where the second terminal is located request the second base station to release resources related to the direct communication path; wherein, the second base station completes the tasks related to the direct communication path. After the resource release process, a response message is sent to the first base station through the second MME and the first MME.

12. A terminal, characterized in that the terminal includes:

The first processing module is used to determine that the direct communication path between itself and the second terminal is out of use;

The second processing module is configured to release the resources related to the direct communication path that it has saved, and request the first base station where it is located to perform a release process of the resources related to the direct communication path.

13. The terminal according to claim 12, characterized in that the second processing module is specifically used to:

First release the resources related to the direct communication path that it has saved, and then request the first base station to perform the release process of the resources related to the direct communication path; or,

First request the first base station to perform a release process of resources related to the direct communication path, and after receiving the response message returned by the first base station, release the resources related to the direct communication path that it has saved, and the response The message is sent after the first base station completes the release process of resources related to the direct communication path.

14. The terminal according to claim 13, characterized in that the second processing module releases its own saved resources related to the direct communication path, specifically including:

Directly release the resources related to the direct communication path saved by itself; or,

Send a resource release request to the second terminal, and after receiving the resource release response returned by the second terminal, release its own saved resources related to the direct communication path, where the resource release request is used to request the The second terminal releases the resources related to the direct communication path, and the resource release response is sent by the second terminal after completing the release process of the resources related to the direct communication path saved by the second terminal; or,

Start the configured timer, and when the timer times out, release the resources related to the direct communication path that it has saved.

15. The terminal of claim 13, wherein the second processing module releases its own saved resources related to the direct communication path, specifically including:

Start the configured timer;

Send a resource release request to the second terminal;

If the resource release response returned by the second terminal is received before the timer times out, it releases the resources related to the direct communication path that it has saved and closes the timer; otherwise, after the timer expires, When timeout occurs, release the resources related to the direct communication path saved by itself; Wherein, the resource release request is used to request the second terminal to release resources related to the direct communication path, and the resource release response is when the second terminal completes its own saving of resources related to the direct communication path. Sent after the resource release process.

16. The terminal according to claim 14 or 15, wherein the second processing module is specifically configured to: send the second processing module to the second terminal through a direct communication interface with the second terminal. Resource release request.

17. The terminal according to claim 12, characterized in that the second processing module is also used to:

Receive a response message returned by the first base station, where the response message is used to notify the first base station that the release process of resources related to the direct communication path has been completed.

18. A base station, characterized in that the base station is the base station where the first terminal is located, and the base station includes:

A receiving module, configured to receive request information sent by the first terminal, where the request information is used to request execution of a release process of resources related to the direct communication path between the first terminal and the second terminal;

A processing module configured to perform a release process of resources related to the direct communication path.

19. The base station according to claim 18, characterized in that the processing module is also used to:

After completing the release process of resources related to the direct communication path, sending a response message to the first terminal, where the response message is used to notify the first terminal that it has completed the resource related to the direct communication path. release process.

20. The base station according to claim 18 or 19, characterized in that, if the second base station where the second terminal is located is the same base station, the processing module performs a release process of resources related to the direct communication path. , Specifically:

When the receiving module receives the request information sent by the first terminal, it releases the resources related to the direct communication path that it has saved; or,

When the receiving module receives the request information sent by the first terminal and receives the request information sent by the second terminal for requesting to perform the release process of the resources related to the direct communication path, release itself to save resources related to the direct communication path.

21. The base station according to claim 18 or 19, characterized in that, if the second base station where the second terminal is located is a different base station and there is an interface connection with the second base station, the processing module Execute the release process of resources related to the direct communication path, specifically:

When the receiving module receives the request information sent by the first terminal, it releases the resources related to the direct communication path that it has saved, and requests the second base station to release the direct communication path through the interface. Path-related resources; wherein, the second base station sends a response message after completing the release process of resources related to the direct communication path.

22. The base station according to claim 18 or 19, characterized in that, if the second base station where the second terminal is located is a different base station and there is no interface connection with the second base station, the processing module performs direct communication with the The release process of path-related resources, specifically:

When the receiving module receives the request information sent by the first terminal, it releases the resources related to the direct communication path that it saves, and, through the first MME where the first terminal is located and the second The second MME where the terminal is located requests the second base station to release resources related to the direct communication path; wherein, the second base station sends a response message after completing the release process of resources related to the direct communication path.

23. A terminal, characterized in that it includes a memory, a processor and an antenna:

The memory stores at least resources related to the direct communication path between itself and the second terminal. The resources related to the direct communication path at least include resources allocated for the direct communication and context information corresponding to the direct communication.

When the processor determines that the direct communication path between itself and the second terminal is terminated, the processor deletes the resources related to the direct communication path stored in the memory, and sends request information to the first base station through the antenna to request the first base station. The base station performs a release process of resources related to the direct communication path.

24. A base station, characterized by including a memory, a processor and an antenna:

The memory stores at least resources related to the direct communication path of each terminal served and information related to the communication path via the core network of each terminal served. The resources related to the direct communication path at least include resources allocated for the direct communication. , and the context information corresponding to the direct communication.

The processor performs a release process of resources related to the direct communication path based on the request information sent from the terminal received by the antenna, and after completing the release process of resources related to the direct communication path, serves itself through the antenna The terminal sends a response message.