WO2016187749A1

WO2016187749A1 - Mcptt group call processing method, system and related device

Info

Publication number: WO2016187749A1
Application number: PCT/CN2015/079591
Authority: WO
Inventors: 李海月; 李靖; 郭国平
Original assignee: 华为技术有限公司
Priority date: 2015-05-22
Filing date: 2015-05-22
Publication date: 2016-12-01
Also published as: CN106664534A

Abstract

An MCPTT group call processing method and related device. A UE in an MCPTT group is located in a first region and/or a second region, wherein the first region comprises a first MCPTT server, and the second region comprises a second MCPTT server. The call processing method comprises: acquiring, by a group defining server for defining the MCPTT group, in a non-call time, position information reported by the UE in the MCPTT group, wherein the position information represents that the UE is located in the first region or the second region; and selecting, by the group defining server, according to the position information reported by the UE in the MCPTT group, the first MCPTT server or the second MCPTT server as a control server of the MCPTT group. An embodiment of the present invention accelerates a call setup process.

Description

Call processing method, system and related device of MCPTT group

Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a call processing method, system, and related device for an MCPTT group.

Background technique

In the traditional trunking communication technology, a predefined group is used, and a role of a Mobile Switching Center (MSC) is defined in a group call register for a group, and the roles include a group call anchor MSC and a group call relay MSC. . The group call anchor MSC is the master MSC of the group call, and controls call setup, uplink management, and call release. When the group call area exceeds the control area of one MSC, the group call anchor MSC and the group call relay MSC jointly process, the group call anchor MSC is responsible for controlling a specific area of the group call area, and the group call relay MSC is responsible for the control group. The group call in the call area anchors the area outside the MSC control.

The Push-to-Talk over Cellular (PoC) function based on the public cellular network is derived from the cluster communication technology. Push-to-Talk (PTT) implements the mobile voice service of Walkie-Talkie, which has a short call setup time, the voice only occupies the channel, and the listener only listens to the channel, and the receiver does not need to go off-hook. Receive call information features at any time. The process of calling the calling party on the PoC group is shown in Figure 1. As shown in Figure 1, the PoC server (Participating PoC Server) at the home of the calling user (client A) receives the call setup request from the calling user. You need to select the group's Controlling Server (Controlling PoC Server) according to the preset policy and then route the call to the Controlling PoC Server. Since the selection of the Controlling PoC Server needs to be performed during the group call setup process, this will result in a longer call setup time.

Based on the Mission Critical Push-To-Talk over Long Term Evolution (MCPTT), it is still in the research stage, and there is no clear call setup solution. PoC is a similar technology, and its solution is flawed and cannot be used directly. Therefore, it is urgent to propose a new solution to solve the group call of MCPTT.

Summary of the invention

In view of this, the embodiments of the present invention provide a call processing method, system, and related device for an MCPTT group, which can speed up the call setup process.

In a first aspect, an embodiment of the present invention provides a call processing method for a push-to-talk key task MCPTT group based on a long-term evolution, where a user equipment UE in the MCPTT group is located in a first area and/or a second area, The first area includes a first MCPTT server, and the second area includes a second MCPTT server, and the method includes:

At a non-call time, the group definition server that is used to define the MCPTT group acquires location information reported by the UE in the MCPTT group, where the location information is used to indicate that the UE is located in the first area or located The second area;

The group definition server selects the first MCPTT server or the second MCPTT server as the control server of the MCPTT group according to the location information reported by the UE in the MCPTT group.

With reference to the first aspect, in a first implementation manner of the first aspect, the attribution of the UE in the MCPTT group is the first area and/or the second area, and the group definition server obtains The location information reported by the UE in the MCPTT group includes:

The group definition server acquires the location information reported by the UE in the MCPTT group by using the MCPTT server of the home location of the UE in the MCPTT group.

With reference to the first aspect, or the first implementation manner of the first aspect, in the second implementation manner of the first aspect, the group definition server determines, according to the location information reported by the UE in the MCPTT group, The first MCPTT server or the second MCPTT server is the control server of the MCPTT group, including:

Determining, by the group definition server, the number of UEs located in the first area and the MCPTT group in the MCPTT group according to the location information reported by the UE in the MCPTT group The number of UEs in the two areas is selected as the MCPTT server of the MCPTT group in the MCPTT group.

With reference to the first aspect, or the first or second implementation manner of the first aspect, in the third implementation manner of the first aspect, the group definition server acquires the UE reporting in the MCPTT group Before the location information, the group definition server is used as a control server of the MCPTT group, and the group definition server sends group data to an MCPTT server of a home of a UE in the MCPTT group, the group The group data includes a group identifier of the MCPTT group, the MCPTT The identifier of the UE in the group and the information of the control server of the MCPTT group.

With reference to the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the group definition server selects the first MCPTT server according to the location information reported by the UE in the MCPTT group. After the second MCPTT server is used as the control server of the MCPTT group, the method further includes:

The group definition server updates information of a control server in the group data;

The group definition server sends the updated group data to the MCPTT server of the home of the UE in the MCPTT group, or the group definition server sends the updated group data to the selected control The server and the MCPTT server of the home of the UE in the MCPTT group.

In a second aspect, an embodiment of the present invention provides a call processing method for a push-to-talk key task MCPTT group based on long-term evolution, including:

The control server receives a call request initiated by the user equipment UE in the MCPTT group sent by the first session initial protocol core SIP Core server, where the call request includes information of a control server of the MCPTT group, the call The request is sent by the first SIP Core server to the control server according to the information of the control server included in the call request, where the first SIP Core server is a SIP Core server of the UE's home location, The control server is determined at non-call time;

The control server performs identity verification on the UE;

When the verification is passed, the control server establishes an MCPTT group call for the UE; when the verification fails, the control server refuses to establish an MCPTT group call for the UE.

With reference to the second aspect, in a first implementation manner of the second aspect, the control server is a first MCPTT server, the first MCPTT server is an MCPTT server of a home location of the UE, and the call request is further Including an identifier of the UE;

The controlling server performing identity verification on the UE includes:

The control server performs identity verification on the UE according to the identifier of the UE and user information saved by itself.

With reference to the second aspect, in a second implementation manner of the second aspect, the control server is a second MCPTT server, and the second MCPTT server is an MCPTT server of the roaming area of the UE, where the call request is further Including an identifier of the UE;

Receiving, by the control server, the call request sent by the first SIP Core server includes:

Receiving, by the second SIP Core server, the call request sent by the first SIP Core server, where the second SIP Core server is a SIP Core server of the roaming place of the UE;

The controlling server performing identity verification on the UE includes:

The control server sends an identity verification request to the first MCPTT server, where the identity verification request includes an identifier of the UE, to request the first MCPTT server to save according to the identifier of the UE and the first MCPTT server. The user information is used to authenticate the UE, and the first MCPTT server is an MCPTT server of the home location of the UE.

With reference to the second aspect, or the first or second implementation manner of the second aspect, in the third implementation manner of the second aspect, the information of the control server of the MCPTT group included in the call request Obtained by the UE from a group definition server of the MCPTT group, or information of a control server of the MCPTT group included in the call request is obtained by the UE from an MCPTT server of a home location of the UE .

With reference to the second aspect, or the first, second, or third implementation manner of the second aspect, in a fourth implementation manner of the second aspect, the control server establishes an MCPTT group for the UE Calls include:

The control server establishes an MCPTT group call for the UE according to the group data of the MCPTT group saved in advance, or the control server acquires the MCPTT obtained in real time according to a group definition server from the MCPTT group. The group data of the group is used to establish an MCPTT group call for the UE, where the group data includes a group identifier of the MCPTT group, an identifier of the UE in the MCPTT group, and a control server of the MCPTT group. Information.

In a third aspect, an embodiment of the present invention provides a group definition server based on a long-term evolution of a push-to-talk mission-critical MCPTT group, including:

An acquiring unit, configured to acquire location information reported by the user equipment UE in the MCPTT group, where the UE in the MCPTT group is located in the first area and/or the second area, where the first area is The first MCPTT server is included, and the second area includes a second MCPTT server, where the location information is used to indicate that the UE is located in the first area or in the second area;

a selecting unit, configured to select, according to the location information reported by the UE in the MCPTT group, the first MCPTT server or the second MCPTT server as the MCPTT group control server.

With reference to the third aspect, in a first implementation manner of the third aspect, the attribution of the UE in the MCPTT group is the first area and/or the second area, and the acquiring unit is specifically configured to: ,

The location information reported by the UE in the MCPTT group is obtained by the MCPTT server of the home location of the UE in the MCPTT group.

With reference to the third aspect, or the first implementation manner of the third aspect, in the second implementation manner of the third aspect, the selecting unit is specifically configured to:

Determining, according to the location information reported by the UE in the MCPTT group, the number of UEs in the MCRTT group that are located in the first area, and the UEs in the second area in the MCPTT group. The number of MCPTT servers in the area where the number of UEs in the MCPTT group is located is selected as the control server of the MCPTT group.

With reference to the third aspect, or the first or second implementation manner of the third aspect, in the third implementation manner of the third aspect, the acquiring unit acquires a location reported by the UE in the MCPTT group Before the information, the group definition server is used as the control server of the MCPTT group, and the group definition server further includes:

a sending unit, configured to send group data to an MCPTT server of a home location of a UE in the MCPTT group when the group definition server is used as a control server of the MCPTT group, where the group data includes a group identifier of the MCPTT group, an identifier of a UE in the MCPTT group, and information of a control server of the MCPTT group.

With reference to the third implementation manner of the third aspect, in the fourth implementation manner of the third aspect, the group definition server further includes:

An information update unit, configured to update, after the selecting unit selects the first MCPTT server or the second MCPTT server as the control server of the MCPTT group according to the location information reported by the UE in the MCPTT group Information of the control server in the group data;

The sending unit is further configured to: send the updated group data to the MCPTT server of the home location of the UE in the MCPTT group, or send the updated group data to the selected control server and the The MCPTT server of the home of the UE within the MCPTT group.

In a fourth aspect, an embodiment of the present invention provides a control server for a push-to-talk mission-critical MCPTT group based on long-term evolution, including:

a receiving unit, configured to receive, by the first session initial protocol core SIP Core server, a call request initiated by a UE in the MCPTT group, where the call request includes information of a control server of the MCPTT group, and the call request is that the first SIP Core server according to the control server included in the call request The information is sent to the control server, the first SIP Core server is a SIP Core server of the UE's home location, and the control server is determined at a non-call time;

An identity verification unit, configured to perform identity verification on the UE;

And a processing unit, configured to: establish an MCPTT group call for the UE when the verification is passed; and refuse to establish an MCPTT group call for the UE when the verification fails.

With reference to the fourth aspect, in a first implementation manner of the fourth aspect, the control server is a first MCPTT server, the first MCPTT server is an MCPTT server of a home location of the UE, and the call request is further Including an identifier of the UE;

The identity verification unit is specifically configured to perform identity verification on the UE according to the identifier of the UE and user information saved in the control server.

With reference to the fourth aspect, in a second implementation manner of the fourth aspect, the control server is a second MCPTT server, and the second MCPTT server is an MCPTT server of the roaming area of the UE, where the call request is further Including an identifier of the UE;

The receiving unit is configured to receive, by using a second SIP Core server, a call request sent by the first SIP Core server, where the second SIP Core server is a SIP Core server of a roaming place of the UE;

The identity verification unit is configured to send an identity verification request to the first MCPTT server, where the identity verification request includes an identifier of the UE, to request the first MCPTT server to use the identifier of the UE and the The user information stored in an MCPTT server authenticates the UE, and the first MCPTT server is an MCPTT server of the UE's home location.

With reference to the fourth aspect, or the first or second implementation manner of the fourth aspect, in a third implementation manner of the fourth aspect, the information of the control server of the MCPTT group included in the call request Obtained by the UE from a group definition server of the MCPTT group, or information of a control server of the MCPTT group included in the call request is obtained by the UE from an MCPTT server of a home location of the UE .

With reference to the fourth aspect, or the first, second, or third implementation manner of the fourth aspect, in a fourth implementation manner of the fourth aspect, the processing unit establishes an MCPTT group for the UE Call Call includes:

The processing unit establishes an MCPTT group call for the UE according to group data of the MCPTT group saved in advance in the control server, or the processing unit defines a server according to a group from the MCPTT group in real time. Obtaining the group data of the MCPTT group for the UE to establish an MCPTT group call, where the group data includes a group identifier of the MCPTT group, an identifier of the UE in the MCPTT group, and the MCPTT The information of the group's control server.

In a fifth aspect, an embodiment of the present invention provides a group definition server based on a long-term evolution of a push-to-talk mission-critical MCPTT group, including a first memory, a first processor, and a first communication interface, where the first process The device is configured to execute the software program stored in the first memory to implement:

And acquiring the location information reported by the user equipment UE in the MCPTT group by using the first communication interface, where the UE in the MCPTT group is located in the first area and/or the second area, where the first The area includes a first MCPTT server, and the second area includes a second MCPTT server, where the location information is used to indicate that the UE is located in the first area or in the second area;

And selecting, according to the location information reported by the UE in the MCPTT group, the first MCPTT server or the second MCPTT server as the control server of the MCPTT group.

With reference to the fifth aspect, in a first implementation manner of the fifth aspect, the attribution of the UE in the MCPTT group is the first area and/or the second area, and the first processor acquires The location information reported by the user equipment UE in the MCPTT group includes:

The first processor acquires location information reported by the UE in the MCPTT group by using an MCPTT server of the home location of the UE in the MCPTT group.

With reference to the fifth aspect, or the first implementation manner of the fifth aspect, in a second implementation manner of the fifth aspect, the first processor selects the location information according to the location information reported by the UE in the MCPTT group The first MCPTT server or the second MCPTT server as the control server of the MCPTT group includes:

Determining, by the first processor, the number of UEs located in the first area and the MCPTT group in the MCPTT group according to the location information reported by the UE in the MCPTT group The number of UEs in the two areas is selected as the MCPTT server of the MCPTT group in the MCPTT group.

In combination with the fifth aspect, or the first or second embodiment of the fifth aspect, in the fifth aspect In a third implementation manner, before the first processor acquires location information reported by the UE in the MCPTT group, the group definition server is used as a control server of the MCPTT group, and the first process is performed. The device is further configured to send group data to the MCPTT server of the home location of the UE in the MCPTT group by using the first communication interface, where the group data includes a group identifier of the MCPTT group, the MCPTT The identifier of the UE in the group and the information of the control server of the MCPTT group.

With reference to the third implementation manner of the fifth aspect, in a fourth implementation manner of the fifth aspect, the first processor is configured to select the first MCPTT server or the second MCPTT server as the MCPTT group And the control server is further configured to: update information of the control server in the group data, and send the updated group data to the home location of the UE in the MCPTT group by using the first communication interface. The MCPTT server sends the updated group data to the selected control server and the MCPTT server of the home of the UE in the MCPTT group.

According to a sixth aspect, an embodiment of the present invention provides a control server for a push-to-talk mission-critical MCPTT group based on a long-term evolution, including a second memory, a second processor, and a second communication interface, where The second processor is configured to execute the software program stored in the second memory to implement:

Receiving, by the second communication interface, a call request initiated by the UE in the MCPTT group sent by the first session initial protocol core SIP Core server, where the call request includes information of a control server of the MCPTT group, The call request is sent by the first SIP Core server to the control server according to the information of the control server included in the call request, where the first SIP Core server is a SIP Core server of the UE's home location. The control server is determined at a non-call time;

Authenticating the UE;

When the verification is passed, an MCPTT group call is established for the UE; when the verification fails, the MCPTT group call is denied to be established for the UE.

With reference to the sixth aspect, in a first implementation manner of the sixth aspect, the control server is a first MCPTT server, the first MCPTT server is an MCPTT server of a home location of the UE, and the call request is further Including an identifier of the UE;

The second processor performs identity verification on the UE according to the identifier of the UE and user information saved in the control server.

With reference to the sixth aspect, in a second implementation manner of the sixth aspect, the control server is a second MCPTT server, and the second MCPTT server is an MCPTT server of the roaming area of the UE, where the call request is further Including an identifier of the UE;

The second processor sends an identity verification request to the first MCPTT server by using the second communication interface, where the identity verification request includes an identifier of the UE, to request the first MCPTT server to use the identifier of the UE. And authenticating, by the user information saved in the first MCPTT server, the first MCPTT server is an MCPTT server of a home location of the UE.

With reference to the sixth aspect, or the first or second implementation manner of the sixth aspect, in a third implementation manner of the sixth aspect, the information of the control server of the MCPTT group included in the call request Obtained by the UE from a group definition server of the MCPTT group, or information of a control server of the MCPTT group included in the call request is obtained by the UE from an MCPTT server of a home location of the UE .

With reference to the sixth aspect, or the first, second, or third implementation manner of the sixth aspect, in a fourth implementation manner of the sixth aspect, the second processor establishes an MCPTT for the UE Group calls include:

Determining, by the second processor, an MCPTT group call for the UE according to the group data of the MCPTT group saved in the control server, or the second processor according to the group from the MCPTT group The group definition data of the MCPTT group obtained by the server in real time is used to establish an MCPTT group call for the UE, where the group data includes a group identifier of the MCPTT group, and an identifier of the UE in the MCPTT group. And information of the control server of the MCPTT group.

In a seventh aspect, an embodiment of the present invention provides a call processing system based on a long-term evolution of a push-to-talk mission-critical MCPTT group, including a group definition server and a control server, where:

The group definition server is configured to acquire location information reported by the user equipment UE in the MCPTT group at a non-call time, where the UE in the MCPTT group is located in the first area and/or the second area, where The first area includes a first MCPTT server, the second area includes a second MCPTT server, and the location information is used to indicate that the UE in the MCPTT group is located in the The first area is located in the second area; the first MCPTT server or the second MCPTT server is selected as the control server according to the location information reported by the UE in the MCPTT group;

The control server is configured to receive, by the first session initial protocol core SIP Core server, a call request initiated by a calling UE in the MCPTT group, where the call request includes information of the control server, The call request is sent by the first SIP Core server to the control server according to the information of the control server included in the call request, where the first SIP Core server is the SIP Core server of the home location of the calling UE. And performing identity verification on the calling UE; when the verification is passed, establishing an MCPTT group call for the calling UE; when the verification fails, rejecting establishing an MCPTT group call for the calling UE.

With reference to the seventh aspect, in a first implementation manner of the seventh aspect, the attribution of the UE in the MCPTT group is the first area and/or the second area, and the group definition server obtains The location information reported by the UE in the MCPTT group includes:

With reference to the seventh aspect, or the first implementation manner of the seventh aspect, in the second implementation manner of the seventh aspect, the group definition server determines, according to the location information reported by the UE in the MCPTT group, The first MCPTT server or the second MCPTT server is the control server of the MCPTT group, including:

With reference to the seventh aspect, or the first or second implementation manner of the seventh aspect, in the third implementation manner of the seventh aspect, the group definition server acquires the UE reporting in the MCPTT group Before the location information, the group definition server is used as a control server of the MCPTT group, and the group definition server sends group data to an MCPTT server of a home of a UE in the MCPTT group, the group The group data includes a group identifier of the MCPTT group, an identifier of the UE in the MCPTT group, and information of a control server of the MCPTT group.

In conjunction with the third embodiment of the seventh aspect, in the fourth embodiment of the seventh aspect, After the group definition server selects the first MCPTT server or the second MCPTT server as the control server of the MCPTT group according to the location information reported by the UE in the MCPTT group, the group definition server is further used to Updating the information of the control server in the group data; transmitting the updated group data to the MCPTT server of the home location of the UE in the MCPTT group, or the group definition server will update the group The group data is sent to the selected control server and the MCPTT server of the home of the UE within the MCPTT group.

With reference to the seventh aspect, or the first, or second, or third or fourth embodiment of the seventh aspect, in a fifth implementation manner of the seventh aspect, the control server is a first MCPTT server, where the first MCPTT server is an MCPTT server of a home location of the calling UE, and the call request further includes an identifier of the calling UE;

The controlling server performing identity verification on the calling UE includes:

The control server performs identity verification on the calling UE according to the identifier of the calling UE and the user information saved by itself.

With reference to the seventh aspect, or the first, or the second, or the third, or the fourth embodiment of the seventh aspect, in a sixth implementation manner of the seventh aspect, the control server is a second MCPTT server, where the second MCPTT server is an MCPTT server of the roaming place of the calling UE, and the call request further includes an identifier of the calling UE;

Receiving, by the second SIP Core server, the call request sent by the first SIP Core server, where the second SIP Core server is a SIP Core server of the roaming place of the calling UE;

The control server sends an identity verification request to the first MCPTT server, where the identity verification request includes an identifier of the calling UE, to request the first MCPTT server to use the identifier of the calling UE and the first The user information stored in the MCPTT server authenticates the calling UE, and the first MCPTT server is an MCPTT server of the home location of the calling UE.

In conjunction with the seventh aspect, or the first, or second, or third, or fourth, or fifth, or sixth embodiment of the seventh aspect, the seventh implementation of the seventh aspect In the mode, the information of the control server of the MCPTT group included in the call request is used by the calling UE from the The group definition server of the MCPTT group acquires, or the information of the control server of the MCPTT group included in the call request is acquired by the calling UE from the MCPTT server of the home location of the calling UE.

In combination with the seventh aspect, or the first, or second, or third, or fourth, or fifth, or sixth, or seventh embodiment of the seventh aspect, in a seventh aspect In an eighth implementation manner, the establishing, by the control server, the MCPTT group call for the calling UE includes:

The control server establishes an MCPTT group call for the calling UE according to the group data of the MCPTT group saved in advance, or the control server obtains the real-time obtained according to the group definition server from the MCPTT group. The group data of the MCPTT group is used to establish an MCPTT group call, and the group data includes a group identifier of the MCPTT group, an identifier of the UE in the MCPTT group, and the MCPTT group. The group's control server information.

It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the group definition server acquires the location information reported by each UE in the MCPTT group, and the location information is used to indicate the area where the UE is currently located; the group definition server is configured according to the MCPTT group. The location information of each UE selects the first MCPTT server of the first area or the second MCPTT server of the second area as the control server of the MCPTT group. That is, in the embodiment of the present invention, the control server of the MCPTT group is selected by the group definition server at the non-call time, which saves the time taken to select the control server during the formal establishment of the call, thereby speeding up the establishment process of the entire call.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a schematic diagram of an embodiment of a call processing method of a prior art PoC group;

2 is a schematic diagram of an embodiment of a call processing method of an MCPTT group according to the present invention;

FIG. 3a is a schematic diagram of another embodiment of a call processing method for an MCPTT group according to the present invention; FIG.

FIG. 3b is a schematic diagram of another embodiment of a call processing method of an MCPTT group according to the present invention; FIG.

3c is a schematic diagram of another embodiment of a call processing method for an MCPTT group according to the present invention;

4 is a schematic diagram of an embodiment of a group definition server according to the present invention;

FIG. 5 is a schematic diagram of another embodiment of a group definition server according to the present invention; FIG.

6 is a schematic diagram of an embodiment of a control server according to the present invention;

7 is a schematic diagram of another embodiment of a control server according to the present invention;

FIG. 8 is a schematic diagram of an embodiment of a call processing system of an MCPTT group according to the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be described with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiment of the invention provides a call processing method, system and related device for an MCPTT group, which can speed up the call setup process. Before introducing the embodiments of the present invention, several servers involved in the embodiments of the present invention are first introduced:

a group definition server, which is used to define a server of an MCPTT group, including a group identifier defining a MCPTT group, members in the group, and the like;

An MCPTT server of a home of the UE, a server for defining user information corresponding to the MCPTT UE;

The MCPTT server of the roaming area of the UE, based on the user information of the MCPTT UE, can provide the UE with the MCPTT service alliance server;

The control server of the MCPTT group, the server that handles the session processing of the MCPTT group.

In the MCPTT system, the MCPTT UE can obtain the MCPTT service provided by the MCPTT server of the home location, and can also obtain the service provided by the MCPTT server of the roaming place.

Referring to FIG. 2, an embodiment of the call processing method of the present invention includes:

In the non-calling time, the group definition server that is used to define the MCPTT group obtains the location information reported by the UE in the MCPTT group, where the location information is used to indicate that the UE is located in the first area or in the second area;

The UEs in the MCPTT group may all be located in the first area, or may be located in the second area, or may be located in the first area and the other part in the second area. The attribution of the UE in the MCPTT group may be all of the first area, or all of the second area, and may also be part of The attribution of the UE is the first area, and the attribution of the other part of the UE is the second area. The first area includes a first MCPTT server, and the second area includes a second MCPTT server.

If the home location of a certain UE in the MCPTT group is the first area, but the current location is the second area, the first MCPTT server is the MCPTT server of the home location of the UE, and the second MCPTT server is the UE. Roaming the MCPTT server.

202. The group definition server selects the first MCPTT server or the second MCPTT server as the control server of the MCPTT group according to the location information reported by the UE in the MCPTT group.

That is, in this embodiment, the group definition server determines the control server of the MCPTT group according to the current location of the UE in the MCPTT group.

In a specific implementation, after the group definition server defines the MCPTT group, the group definition server may be used as the control server of the MCPTT group, and the group definition server sends the group data of the MCPTT group to the MCPTT group. The MCPTT server of the UE's home location includes the group identity of the MCPTT group, the identity of the UE in the MCPTT group, and the information of the MCPTT group control server. At this time, if there is a UE initiating a call request in the MCPTT group, the group definition server performs call processing as the control server of the MCPTT group.

Next, in the non-call time (for example, when the UE registers with the MCPTT server at the home station, or when the location of the UE in the MCPTT group changes), the group definition server may acquire the location information reported by the UE in the MCPTT group. Specifically, the group definition server may obtain the location information reported by the UE in the MCPTT group by using the MCPTT server of the home location of the UE in the MCPTT group.

The group definition server selects the first MCPTT server or the second MCPTT server as the control server of the MCPTT group according to the location information reported by the UE in the MCPTT group. Specifically, the group definition server may determine, according to the location information reported by the UE, the number of UEs located in the first area in the MCPTT group and the number of UEs located in the second area in the MCPTT group, and select the number of MCPTT groups. The MCPTT server of the area where more UEs are located serves as the control server of the MCPTT group.

After re-determining the control server of the MCPTT group, the group definition server updates the information of the control server in the group data of the MCPTT group (the information of the original control server in the group data is the information of the group definition server, and is now updated. For the information of the selected MCPTT server, the group definition server sends the updated group data to the MCPTT of the home location of the UE in the MCPTT group. The server, or the group definition server, transmits the updated group data to the selected control server and the MCPTT server of the home of the UE in the MCPTT group. If the control server of the MCPTT group changes (for example, the location of the group member changes to cause the change of the control server), the group definition server needs to update the group data and send the updated group data to the MCPTT group. The MCPTT server of the home location of the UE in the group, or sending the updated group data to the newly determined control server and the MCPTT server of the home location of the UE in the MCPTT group; if the group definition server sends the old control server before The group data of the group, at this time, the group definition server may instruct the old control server to delete the group data of the group.

For example, the group definition server defines an MCPTT group consisting of four members A, B, C, and D. The four members belong to the first region, but only four of the four members are currently present. Located in the first area, the other three members are currently in the second area. In this case, the group definition server may obtain the location information of the four members through the MCPTT server in the first region, because the number of members in the second region in the MCPTT group is greater than the members in the first region. The number, so the group definition server determines, according to the location information, that the MCPTT server of the second region is the control server of the MCPTT group.

In addition, in the existing PoC group call processing flow, in addition to the defect of selecting the control server during the call process, there is another defect that all signaling in the call process needs to pass through the calling attribution. The PoC server (Participating PoC Server) transits, and this defect also causes the call setup time to be longer. The present invention provides a solution to this defect. Referring to FIG. 3a, another embodiment of the call processing method of the present invention includes:

301. The control server receives a call request initiated by the first SIP Core server by the UE in the MCPTT group, where the call request includes information of a control server of the MCPTT group, and the call request is a first SIP Core server according to the call request. The information of the control server included in the control server is sent to the control server, the first SIP Core server is the SIP Core server of the UE's home location, and the control server is determined at the non-call time;

In this embodiment, since the control server of the MCPTT group has been determined at the non-call time, the information of the control server may be carried in the call request initiated by the UE, so the first SIP Core server may be in accordance with the call request initiated by the UE. The information of the carried control server directly routes the call request to the control server without the relay of the MCPTT server at the home of the UE that initiated the call.

302. The control server performs identity verification on the UE.

The authentication of the UE herein includes, but is not limited to, verifying whether the calling UE is registered, the calling authority of the calling UE, and the like.

303. When the verification succeeds, the control server establishes an MCPTT group call for the UE; when the verification fails, the control server refuses to establish an MCPTT group call for the UE.

In this embodiment, the group data of the MCPTT group may be pre-stored in the control server (the group data is sent to the control server by the group definition server of the MCPTT group), and the control server may be according to the calling UE. The group identifier of the MCPTT group obtains the group data of the MCPTT group pre-stored by itself, and establishes an MCPTT group call for the calling UE according to the group data pre-stored by itself. When the group data of the MCPTT group is not pre-stored in the control server, the control server may address the group definition server according to the group identifier of the MCPTT group to which the calling UE belongs, and obtain the MCPTT group from the group definition server in real time. Group data, and establish an MCPTT group call for the UE according to the group data acquired in real time. The group data may include a group identifier of the group, an identifier of the UE in the group, and information of the control server of the group, and the control server may establish an MCPTT group call for the UE according to the group data saved by the control.

In a specific implementation, the information of the control server of the MCPTT group carried in the call request initiated by the UE may be addressed by the UE to the group definition server according to the group identifier of the MCPTT group to which the UE belongs, and obtained from the group definition server; It may also be obtained by the UE from the MCPTT server of the home location according to the group identifier of the MCPTT group to which the UE belongs.

In this embodiment, the control server of the MCPTT group may be the MCPTT server of the home location of the calling UE, or may be the MCPTT server of the roaming place of the calling UE. The following two cases are described separately.

Referring to FIG. 3b, FIG. 3b shows a call processing procedure when the control server of the MCPTT group is the MCPTT server of the home location of the calling UE.

In this embodiment, the calling UE may be located in the first area or in the second area, but the home location of the calling UE is the first area, and the first area includes the first SIP Core server and the first MCPTT server. The second area includes a second SIP Core server and a second MCPTT server, and the control server of the MCPTT group is the first MCPTT server.

The calling UE may from the first MCPTT server or define a group of MCPTT groups to which the calling UE belongs The group definition server acquires information of the control server of the MCPTT group to which the calling UE belongs (ie, information of the first MCPTT server). The calling UE sends a call request to the first SIP Core server. The information of the control server carried in the call request is the information of the first MCPTT server and the identifier of the calling UE, and the first SIP Core server directly sends the call request to the first MCPTT. server.

Since the first MCPTT server is the MCPTT server of the home location of the UE, the user information of the calling UE is stored in the first MCPTT server. The first MCPTT server directly searches for the user information of the calling UE according to the identifier of the calling UE, thereby implementing identity verification for the calling UE. When the verification is passed, the first MCPTT server establishes an MCPTT group call according to the group data of the MCPTT group, and when the verification fails, the first MCPTT server rejects the establishment of the MCPTT group call for the calling UE.

Please refer to FIG. 3c. FIG. 3c shows a call processing procedure when the control server of the MCPTT group is the MCPTT server of the roaming area of the calling UE.

In this embodiment, the calling UE is located in the second area, but the home location of the calling UE is the first area, the first area includes the first SIP Core server and the first MCPTT server, and the second area includes the second SIP Core. The server and the second MCPTT server, and the control server of the MCPTT group is the second MCPTT server.

The calling UE may obtain information of the control server of the MCPTT group to which the calling UE belongs (ie, information of the second MCPTT server) from the first MCPTT server or a group definition server that defines the MCPTT group to which the calling UE belongs. The calling UE sends a call request to the first SIP Core server, where the information of the control server carried in the call request is the information of the second MCPTT server and the identifier of the calling UE, and the first SIP Core server directly sends the call request through the second SIP Core. The server sends to the second MCPTT server (no forwarding by the first MCPTT server is required). Alternatively, the calling UE can directly send a call request to the second MCPTT server through the second SIP Core server, and does not need to be forwarded by the first SIP Core server and the first MCPTT server.

Since the second MCPTT server is not the MCPTT server of the home location of the calling UE, the second MCPTT server does not have the user data of the calling UE, and the calling UE cannot be authenticated. Therefore, after receiving the call request, the second MCPTT server sends an identity verification request to the first MCPTT server, where the identity verification request includes the identity of the calling UE. The first MCPTT server stores user information of the calling UE, and the first MCPTT server searches for the user of the calling UE according to the identifier of the calling UE. Data, thereby implementing authentication of the calling UE, and the first MCPTT server sends the authentication result to the second MCPTT server. When the verification is passed, the second MCPTT server establishes an MCPTT group call according to the group data of the MCPTT group, and when the verification fails, the second MCPTT server rejects the establishment of the MCPTT group call for the calling UE.

In this embodiment, the control server of the MCPTT group has been determined at the non-call time, and the control server can directly interact with the SIP Core server of the home location of the calling UE, without the MCPTT server transit signaling through the home location of the calling UE. , thus speeding up the process of establishing the entire call.

It should be noted that the corresponding embodiment of FIG. 2 mainly describes the determining method of the MCPTT group control server provided by the present invention, and the corresponding embodiments of FIG. 3a - FIG. 3c mainly describe after determining the MCPTT group control server. The call setup method provided by the present invention; in an actual application, after the method for determining the control server of the MCPTT group provided by the present invention, the call setup method provided by the present invention may be used for subsequent processing, and of course, other methods may be followed. The method of the MCPTT group provided by the present invention may be used for the subsequent processing. The determining method of the server determines the control server. Of course, other methods may be used (for example, which MCPTT server is statically specified in advance as the control server, and the present invention is equivalent to dynamically selecting the MCPTT group control server according to the location of the UE) to determine the control server. No specific restrictions are made.

The group definition server provided by the embodiment of the present invention is described below. Referring to FIG. 4, the group definition server 400 of this embodiment includes:

The obtaining unit 401 is configured to acquire the location information reported by the UE in the MCPTT group at the non-call time. The UE in the MCPTT group is located in the first area and/or the second area, where the first area includes the first MCPTT server. The second area includes a second MCPTT server, where the location information is used to indicate that the UE is located in the first area or in the second area;

The selecting unit 402 is configured to select, according to the location information reported by the UE in the MCPTT group, the first MCPTT server in the first area or the second MCPTT server in the second area as the control server of the MCPTT group.

In addition, before the obtaining unit 401 acquires the location information reported by the UE in the MCPTT group, the group definition server serves as the control server of the MCPTT group, and the group definition server in this embodiment further Can include:

The sending unit 403 is configured to send group data to the MCPTT server of the home location of the UE in the MCPTT group, where the group data includes a group identifier of the MCPTT group, an identifier of the UE in the MCPTT group, and a control server of the MCPTT group. Information.

In addition, the group definition server in this embodiment may further include:

The information updating unit 404 is configured to update the information of the control server in the group data after the selecting unit 402 selects the first MCPTT server in the first area or the second MCPTT server in the second area as the control server of the MCPTT group. ;

The sending unit 403 is further configured to: send the updated group data to the MCPTT server of the home location of the UE in the MCPTT group, or send the updated group data to the control server and the MCPTT group selected by the selecting unit 402. The MCPTT server of the home of the UE within the group.

The interaction process between the units in the group definition server in this embodiment is described in detail below, as follows:

After the group definition server defines the MCPTT group, the group definition server may be used as the control server of the MCPTT group, and the sending unit 403 sends the group data of the MCPTT group to the home location of the UE in the MCPTT group. In the MCPTT server, the group data includes a group identifier of the MCPTT group, an identifier of the UE in the MCPTT group, and information of the control server of the MCPTT group. At this time, if there is a UE initiating a call request in the MCPTT group, the group definition server performs call processing as the control server of the MCPTT group.

The acquisition unit 401 may acquire the location information reported by the UE in the MCPTT group, when the UE is in the MCPTT server, or the location of the UE in the MCPTT group changes. Specifically, the acquiring unit 401 may acquire the location information reported by the UE in the MCPTT group by using the MCPTT server of the home location of the UE in the MCPTT group.

The selecting unit 402 selects the first MCPTT server or the second MCPTT server as the control server of the MCPTT group according to the location information reported by the UE in the MCPTT group acquired by the obtaining unit 401. Specifically, the selecting unit 402 may determine, according to the location information reported by the UE, the number of UEs located in the first area in the MCPTT group and the number of UEs located in the second area in the MCPTT group, and select the number of MCPTT groups. The MCPTT server of the area where multiple UEs are located serves as the control server of the MCPTT group.

After re-determining the control server of the MCPTT group, the information update unit 404 updates the information of the control server in the group data of the MCPTT group (the information of the original control server in the group data is the information of the group definition server, and is now updated. For the information of the selected MCPTT server, the transmitting unit 403 transmits the updated group data to the MCPTT server of the home of the UE in the MCPTT group, or the transmitting unit 403 transmits the updated group data to the selected one. The MCPTT server that controls the server and the home of the UE in the MCPTT group. Subsequently, if the control server of the MCPTT group changes (for example, the location of the group member changes to cause a change of the control server), the information update unit 404 needs to update the group data, and the sending unit 403 needs to update the group data. Sending to the MCPTT server of the home location of the UE in the MCPTT group, or the sending unit 403 needs to send the updated group data to the newly determined control server and the MCPTT server of the home location of the UE in the MCPTT group; if the sending unit 403 The group data of the group is previously sent to the old control server. At this time, the sending unit 403 may send a deletion indication to the old control server to instruct the old control server to delete the group data of the group.

In this embodiment, the control server of the MCPTT group is selected by the selection unit at the non-call time, which saves the time taken to select the control server during the formal establishment of the call, thereby speeding up the establishment process of the entire call.

Referring to FIG. 5, another embodiment of the group definition server of the present invention includes at least one first memory 501, at least one first processor 502, and a first communication interface 503. The first communication interface 503 may be wired or may be wireless. The first memory 501 is configured to store a set of software programs, and the first processor 502 is configured to execute a software program stored in the first memory 501 to implement:

Acquiring the location information reported by the UE in the MCPTT group by using the first communication interface 503, where the location information is used to indicate that the UE is located in the first area or in the second area;

The first MCPTT server in the first area or the second MCPTT server in the second area is selected as the control server of the MCPTT group according to the location information reported by the UE in the MCPTT group.

Optionally, the home location of the UE in the MCPTT group is the first area and/or the second area, and the first processor 502 acquires the UE in the MCPTT group by using the MCPTT server of the home location of the UE in the MCPTT group. The reported location information.

Optionally, the first processor 502 determines, according to the location information reported by the UE in the MCPTT group, the number of UEs located in the first area in the MCPTT group and the MCPTT group. The number of UEs in the two areas, and the MCPTT server in the area where the number of UEs in the MCPTT group is located is selected as the control server of the MCPTT group.

Optionally, before the first processor 502 acquires the location information reported by the UE in the MCPTT group, the group definition server serves as a control server of the MCPTT group, and the first processor 502 is further configured to use the first communication interface 503. The MCPTT server of the home location of the UE in the MCPTT group sends the group data, where the group data includes the group identifier of the MCPTT group, the identifier of the UE in the MCPTT group, and the information of the MCPTT group control server.

Optionally, after the first processor 502 selects the first MCPTT server or the second MCPTT server as the control server of the MCPTT group, the information about the control server in the group data is further updated by using the first communication interface 503. The updated group data is sent to the MCPTT server of the home location of the UE in the MCPTT group, or the updated group data is sent to the selected control server and the MCPTT server of the home of the UE in the MCPTT group.

The following describes the control server provided by the embodiment of the present invention. Referring to FIG. 6, the control server 600 of this embodiment includes:

The receiving unit 601 is configured to receive, by the first SIP Core server, a call request initiated by a UE in the MCPTT group, where the call request includes information of a control server of the MCPTT group, where the call request is a first SIP Core server according to the call request. The information of the control server included in the control server is sent to the control server, the first SIP Core server is the SIP Core server of the UE's home location, and the control server is determined at the non-call time;

An authentication unit 602, configured to perform identity verification on the UE;

The processing unit 603 is configured to establish an MCPTT group call for the UE when the verification is passed, and refuse to establish an MCPTT group call for the UE when the verification fails.

In this embodiment, the information of the control server of the MCPTT group included in the call request is obtained by the UE from the group definition server of the MCPTT group, or the information of the control server of the MCPTT group included in the call request is used by the UE from the UE. The attribution to the MCPTT server is obtained.

The processing unit 603 establishes an MCPTT group call for the UE, including:

The processing unit 603 establishes an MCPTT group call for the UE according to the group data of the MCPTT group saved in advance by the control server, or the processing unit 603 selects the group data of the MCPTT group obtained in real time from the group definition server of the MCPTT group as the UE. Establish an MCPTT group call. The group data includes the group identifier of the MCPTT group, the identifier of the UE in the MCPTT group, and the MCPTT group. Control server information.

The following describes in detail the interaction process between the units in the control server in this embodiment. In this embodiment, the MCPTT group control server may be the MCPTT server of the home location of the calling UE, or may be the roaming of the calling UE. The MCPTT server of the ground, the following describes the two cases separately.

The calling UE may obtain information of the control server of the MCPTT group to which the calling UE belongs (ie, information of the first MCPTT server) from the first MCPTT server or a group definition server that defines the MCPTT group to which the calling UE belongs. The calling UE sends a call request to the first SIP Core server. The information of the control server carried in the call request is the information of the first MCPTT server and the identifier of the calling UE, and the first SIP Core server directly sends the call request to the first MCPTT. The server, the receiving unit 601 receives the call request.

Since the first MCPTT server is the MCPTT server of the home location of the UE, the first MCPTT server stores the user information of the calling UE. The identity verification unit 602 directly searches for the user information of the calling UE stored in the first MCPTT server according to the identifier of the calling UE, thereby implementing identity verification for the calling UE. When the verification is passed, the processing unit 603 establishes an MCPTT group call for the calling UE according to the group data of the MCPTT group. When the verification fails, the processing unit 603 rejects the establishment of the MCPTT group call for the calling UE.

The calling UE may obtain information of the control server of the MCPTT group to which the calling UE belongs (ie, information of the second MCPTT server) from the first MCPTT server or a group definition server that defines the MCPTT group to which the calling UE belongs. The calling UE sends a call request to the first SIP Core server, where the information of the control server carried in the call request is the information of the second MCPTT server and the identifier of the calling UE, and the first SIP Core server directly sends the call request through the second SIP Core. The server sends the request to the second MCPTT server (the forwarding of the first MCPTT server is not required); or the calling UE sends the call request to the second MCPTT server directly through the second SIP Core server, without passing through the first SIP Core server and the first MCPTT The forwarding of the server, the receiving unit 601 receives the call request.

Since the second MCPTT server is not the MCPTT server of the home location of the calling UE, the second MCPTT server does not have the user data of the calling UE, and the identity verification unit 602 cannot directly authenticate the calling UE. Therefore, after the receiving unit 601 receives the call request, the identity verification unit 602 sends an identity verification request to the first MCPTT server, where the identity verification request includes the identity of the calling UE. The first MCPTT server stores the user information of the calling UE, and the first MCPTT server searches for the user information of the calling UE according to the identifier of the calling UE, thereby implementing identity verification of the calling UE, and the first MCPTT server will verify the identity. Send to the second MCPTT server. When the verification is passed, the processing unit 603 establishes an MCPTT group call for the calling UE according to the group data of the MCPTT group. When the verification fails, the processing unit 603 rejects the establishment of the MCPTT group call for the calling UE.

Referring to FIG. 7, another embodiment of the control server of the present invention includes at least one second memory 701, at least one second processor 702, and a second communication interface 703. The second communication interface 703 may be wired or wireless. . The second memory 701 is configured to store a set of software programs, and the second processor 702 is configured to execute the software programs stored in the second memory 701 to implement:

Receiving, by the second communication interface 703, a call request initiated by the first SIP Core server by the UE in the MCPTT group, where the call request includes information of the MCPTT group control server, and the call request is the first SIP Core server according to the call request. The information of the control server included in the control server is sent to the control server, the first SIP Core server is the SIP Core server of the UE's home location, and the control server is determined at the non-call time;

Authenticate the UE;

When the verification is passed, an MCPTT group call is established for the UE; when the verification fails, the MCPTT group call is rejected for the UE.

Optionally, the control server is the first MCPTT server, the first MCPTT server is the MCPTT server of the UE's home location, the call request further includes the identifier of the UE, and the second processor 702 controls the user saved by the server according to the identifier of the UE. The information authenticates the UE.

Optionally, the control server is a second MCPTT server, and the second MCPTT server is an MCPTT server of the roaming area of the UE, and the call request further includes an identifier of the UE.

The second processor 702 receives the call request sent by the first SIP Core server by using the second SIP Core server, and the second SIP Core server is the SIP Core server of the roaming place of the UE;

The second processor 702 sends an identity verification request to the first MCPTT server by using the second communication interface 703, where the identity verification request includes the identifier of the UE, to request the first MCPTT server to be saved according to the identifier of the UE and the first MCPTT server. The user information authenticates the UE, and the first MCPTT server is the MCPTT server of the UE's home location.

Optionally, the information of the control server of the MCPTT group included in the call request is obtained by the UE from the group definition server of the MCPTT group, or the information of the control server of the MCPTT group included in the call request is attributed by the UE from the UE. Get the MCPTT server.

Optionally, the second processor 702 establishes an MCPTT group call for the UE, where the second processor 702 establishes an MCPTT group call for the UE according to the group data of the MCPTT group saved in advance in the control server, or the second processor. The 702 establishes an MCPTT group call for the UE according to the group data of the MCPTT group that is obtained in real time from the group definition server of the MCPTT group, where the group data includes the group identifier of the MCPTT group, the identifier of the UE in the MCPTT group, and the MCPTT The information of the group's control server.

The present invention also provides a call processing system. Referring to FIG. 8, the call processing system 800 of the present embodiment includes a group definition server 801 and a control server 802. The group definition server 801 can be described with reference to the corresponding embodiment of FIG. For the group definition server, the control server 802 can refer to the control server described in the foregoing embodiment corresponding to FIG. 6, and details are not described herein again.

It should be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical. Units can be located in one place, or they can be distributed On a network unit. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, in the drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and specifically, one or more communication buses or signal lines can be realized. Those of ordinary skill in the art can understand and implement without any creative effort.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, dedicated hardware, dedicated CPU, dedicated memory, dedicated memory, Special components and so on. In general, functions performed by computer programs can be easily implemented with the corresponding hardware, and the specific hardware structure used to implement the same function can be various, such as analog circuits, digital circuits, or dedicated circuits. Circuits, etc. However, for the purposes of the present invention, software program implementation is a better implementation in more cases. Based on the understanding, the technical solution of the present invention, which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. , U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., including a number of instructions to make a computer device (may be A personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.

The call processing method, system, and related device of the MCPTT group provided by the embodiment of the present invention are described in detail. For those skilled in the art, according to the idea of the embodiment of the present invention, the specific implementation manner and the application range There is a change in the above, and therefore, the content of the present specification should not be construed as limiting the invention.

Claims

A call processing method for a push-to-talk mission-critical MCPTT group based on the long-term evolution, wherein the user equipment UE in the MCPTT group is located in the first area and/or the second area, in the first area The first MCPTT server is included, and the second area includes a second MCPTT server, and the method includes:

At a non-call time, the group definition server that is used to define the MCPTT group acquires location information reported by the UE in the MCPTT group, where the location information is used to indicate that the UE is located in the first area or located The second area;

The group definition server selects the first MCPTT server or the second MCPTT server as the control server of the MCPTT group according to the location information reported by the UE in the MCPTT group.
The method according to claim 1, wherein the attribution of the UE in the MCPTT group is the first area and/or the second area, and the group definition server acquires the MCPTT group The location information reported by the UE in the group includes:

The group definition server acquires the location information reported by the UE in the MCPTT group by using the MCPTT server of the home location of the UE in the MCPTT group.
The method according to claim 1 or 2, wherein the group definition server determines that the first MCPTT server or the second MCPTT server is the MCPTT according to location information reported by the UE in the MCPTT group. The group's control server includes:

Determining, by the group definition server, the number of UEs located in the first area and the MCPTT group in the MCPTT group according to the location information reported by the UE in the MCPTT group The number of UEs in the two areas is selected as the MCPTT server of the MCPTT group in the MCPTT group.
The method according to any one of claims 1 to 3, wherein the group definition server is used as the MCPTT before the group definition server acquires location information reported by the UE in the MCPTT group. a group control server, where the group definition server sends group data to an MCPTT server of a home of the UE in the MCPTT group, where the group data includes a group identifier of the MCPTT group, The identifier of the UE in the MCPTT group and the information of the control server of the MCPTT group.
The method according to claim 4, wherein the group definition server selects the first MCPTT server or the second MCPTT server as the MCPTT group according to location information reported by the UE in the MCPTT group. After the group's control server, it also includes:

The group definition server updates information of a control server in the group data;

The group definition server sends the updated group data to the MCPTT server of the home of the UE in the MCPTT group, or the group definition server sends the updated group data to the selected control The server and the MCPTT server of the home of the UE in the MCPTT group.
A call processing method for a push-to-talk mission-critical MCPTT group based on long-term evolution, characterized in that:

The control server receives a call request initiated by the user equipment UE in the MCPTT group sent by the first session initial protocol core SIP Core server, where the call request includes information of a control server of the MCPTT group, the call The request is sent by the first SIP Core server to the control server according to the information of the control server included in the call request, where the first SIP Core server is a SIP Core server of the UE's home location, The control server is determined at non-call time;

The control server performs identity verification on the UE;

When the verification is passed, the control server establishes an MCPTT group call for the UE; when the verification fails, the control server refuses to establish an MCPTT group call for the UE.
The method according to claim 6, wherein the control server is a first MCPTT server, the first MCPTT server is an MCPTT server of a home location of the UE, and the call request further includes the UE Identification

The controlling server performing identity verification on the UE includes:

The control server performs identity verification on the UE according to the identifier of the UE and user information saved by itself.
The method according to claim 6, wherein the control server is a second MCPTT server, the second MCPTT server is an MCPTT server of a roaming place of the UE, and the call request further includes the UE Identification

Receiving, by the control server, the call request sent by the first SIP Core server includes:

The control server receives the first SIP Core server through a second SIP Core server a call request sent, the second SIP Core server is a SIP Core server of the roaming place of the UE;

The controlling server performing identity verification on the UE includes:

The control server sends an identity verification request to the first MCPTT server, where the identity verification request includes an identifier of the UE, to request the first MCPTT server to save according to the identifier of the UE and the first MCPTT server. The user information is used to authenticate the UE, and the first MCPTT server is an MCPTT server of the home location of the UE.
The method according to any one of claims 6 to 8, wherein the information of the control server of the MCPTT group included in the call request is defined by the UE from a group definition server of the MCPTT group Obtaining, or information of a control server of the MCPTT group included in the call request, is acquired by the UE from an MCPTT server of a home location of the UE.
The method according to any one of claims 6 to 9, wherein the establishing, by the control server, the MCPTT group call for the UE comprises:

The control server establishes an MCPTT group call for the UE according to the group data of the MCPTT group saved in advance, or the control server acquires the MCPTT obtained in real time according to a group definition server from the MCPTT group. The group data of the group is used to establish an MCPTT group call for the UE, where the group data includes a group identifier of the MCPTT group, an identifier of the UE in the MCPTT group, and a control server of the MCPTT group. Information.
A group definition server based on a long-term evolution of a push-to-talk mission-critical MCPTT group, comprising:

An acquiring unit, configured to acquire location information reported by the user equipment UE in the MCPTT group, where the UE in the MCPTT group is located in the first area and/or the second area, where the first area is The first MCPTT server is included, and the second area includes a second MCPTT server, where the location information is used to indicate that the UE is located in the first area or in the second area;

And a selecting unit, configured to select, according to the location information reported by the UE in the MCPTT group, the first MCPTT server or the second MCPTT server as the control server of the MCPTT group.
The group definition server according to claim 11, wherein the attribution of the UE in the MCPTT group is the first area and/or the second area, and the acquiring unit is specifically configured to:

The location information reported by the UE in the MCPTT group is obtained by the MCPTT server of the home location of the UE in the MCPTT group.
The group definition server according to claim 11 or 12, wherein the selection unit is specifically configured to:

Determining, according to the location information reported by the UE in the MCPTT group, the number of UEs in the MCRTT group that are located in the first area, and the UEs in the second area in the MCPTT group. The number of MCPTT servers in the area where the number of UEs in the MCPTT group is located is selected as the control server of the MCPTT group.
The group definition server according to any one of claims 11 to 13, wherein the group definition server is used as the location before the acquiring unit acquires location information reported by the UE in the MCPTT group. The control server of the MCPTT group, the group definition server further includes:

a sending unit, configured to send group data to an MCPTT server of a home location of a UE in the MCPTT group when the group definition server is used as a control server of the MCPTT group, where the group data includes a group identifier of the MCPTT group, an identifier of a UE in the MCPTT group, and information of a control server of the MCPTT group.
The group definition server according to claim 14, wherein the group definition server further comprises:

An information update unit, configured to update, after the selecting unit selects the first MCPTT server or the second MCPTT server as the control server of the MCPTT group according to the location information reported by the UE in the MCPTT group Information of the control server in the group data;

The sending unit is further configured to: send the updated group data to the MCPTT server of the home location of the UE in the MCPTT group, or send the updated group data to the selected control server and the The MCPTT server of the home of the UE within the MCPTT group.
A control server for a long-term evolution-based push-to-talk mission-critical MCPTT group, comprising:

a receiving unit, configured to receive, by the first session initial protocol core SIP Core server, a call request initiated by a UE in the MCPTT group, where the call request includes information of a control server of the MCPTT group, where The call request is sent by the first SIP Core server to the control server according to the information of the control server included in the call request, the first SIP The Core server is a SIP Core server of the home of the UE, and the control server is determined at a non-call time;

An identity verification unit, configured to perform identity verification on the UE;

And a processing unit, configured to: establish an MCPTT group call for the UE when the verification is passed; and refuse to establish an MCPTT group call for the UE when the verification fails.
The control server according to claim 16, wherein the control server is a first MCPTT server, the first MCPTT server is an MCPTT server of a home location of the UE, and the call request further includes the The identity of the UE;

The identity verification unit is specifically configured to perform identity verification on the UE according to the identifier of the UE and user information saved in the control server.
The control server according to claim 16, wherein the control server is a second MCPTT server, the second MCPTT server is an MCPTT server of a roaming place of the UE, and the call request further includes the The identity of the UE;

The receiving unit is configured to receive, by using a second SIP Core server, a call request sent by the first SIP Core server, where the second SIP Core server is a SIP Core server of a roaming place of the UE;

The identity verification unit is configured to send an identity verification request to the first MCPTT server, where the identity verification request includes an identifier of the UE, to request the first MCPTT server to use the identifier of the UE and the The user information stored in an MCPTT server authenticates the UE, and the first MCPTT server is an MCPTT server of the UE's home location.
The control server according to any one of claims 16 to 18, wherein the information of the control server of the MCPTT group included in the call request is defined by the UE from a group of the MCPTT group The server acquires, or the information of the control server of the MCPTT group included in the call request is acquired by the UE from the MCPTT server of the home location of the UE.
The control server according to any one of claims 16 to 19, wherein the processing unit establishing an MCPTT group call for the UE comprises:

The processing unit establishes an MCPTT group call for the UE according to group data of the MCPTT group saved in advance in the control server, or the processing unit defines a server according to a group from the MCPTT group in real time. Obtaining the group data of the MCPTT group for the UE Establishing an MCPTT group call, where the group data includes a group identifier of the MCPTT group, an identifier of a UE in the MCPTT group, and information of a control server of the MCPTT group.