CN104854886A

CN104854886A - Method and apparatus for transmitting and obtaining information, application server, base station, and terminal

Info

Publication number: CN104854886A
Application number: CN201380001629.1A
Authority: CN
Inventors: 曾清海; 孙启
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-11-05
Filing date: 2013-11-05
Publication date: 2015-08-19
Also published as: WO2015066844A1

Abstract

The present application relates to the technical field of communications, discloses a method and an apparatus for transmitting and obtaining information, an application server, a base station and a terminal, so as to solve the technical problem in the prior art that when group communications data is transmitted by using an MBMS mode, the time delay that a new joining terminal obtains the group communications data is long. The method for transmitting information specifically comprises: an application server of a group communications service receiving a request message that is sent by a terminal and requesting joining a group; and the application server of the group communications service sending, according to the request message, multicast control information to the terminal through a serving node of the application server or the terminal, or the application server of the group communications service sending, to the terminal, instruction information comprising identification information of an MBMS bearer, the instruction information being used for instructing the terminal to obtain multicast control information corresponding to the identification information, and the multicast control information being used for making the terminal obtain group communications data.

Description

Method, device, application server, base station and terminal for transmitting and acquiring information

Method and device for transmitting and acquiring information, application server, base station and terminal technical field

The present application relates to the field of mobile communications technologies, and in particular, to a method, an apparatus, an application server, a base station, and a terminal for transmitting and acquiring information. Background

In order to achieve more efficient communication, 3GPP (The 3rd Generation Partnership Project) dominated LTE (Long Term Evolution) wishes to introduce a group communication mechanism, which is to group a plurality of terminals into one group, wherein The terminals may be distributed in The same cell, or in different cells, or even different communication systems. And further, the information all-person sharing can be quickly and conveniently realized among the group members through a wireless communication network. Referring to fig. 1, a system architecture diagram of a set of communication mechanisms is shown:

the system comprises A, B, C, D, E, F, G these 7 terminals, these 7 terminals are distributed in two cells, wherein if it is assumed that terminal C has data sharing, terminal C first transmits data packets to its own base station (i.e. base station 1), and base station 10 transmits data packets to other terminals in its group, i.e.: a, B, D, E, and base station 1 will transmit the data packet to base station 2 and then send the data packet to its corresponding terminal, i.e. terminal, through base station 11? G, while some other network elements may be needed to forward the data packet from the base station 1 to the base station 2, so that a certain time is needed, however, the current 3GPP requires that the time delay from the time when the user C sends the data to the time when the other users receive the data is not greater than 300 ms.

In the current LTE system, data is transmitted in an MBMS (Multimedia Broadcast Multicast Service) manner. Compared with the common communication mode, the MBMS is characterized in that a common resource is used for transmitting data packets, and all receivers in a cell receive data through the same resource, so that the wireless resource can be more efficiently utilized. In the case of data transmission in the MBMS scheme, it is necessary to notify the terminals of information such as channel configuration, referred to as "multicast control information", via the MCCH channel, and the multicast control information is periodically transmitted on the radio interface, as shown in fig. 1, in order for the terminals that are successively involved in MBMS transmission to receive data correctly.

In the existing protocol, the transmission period of the MCCH has four values, which are {320ms, 640ms, 1280ms, and 2560ms }, respectively, so it can be seen that if the data of the group communication is transmitted in the MBMS manner, 320ms is required even if the shortest MCCH repetition period is used, which results in a long time delay for acquiring the data of the group communication and fails to meet the time delay requirement of the group communication. Disclosure of Invention

The embodiment of the application provides a data transmission method, a data receiving method and a data receiving device, which are used for solving the technical problem that in the prior art, when a group communication data is transmitted in an MBMS mode, a newly added terminal has long time delay for acquiring the group communication data.

In a first aspect, an embodiment of the present application provides a method for transmitting a message, including: an application server of group communication service receives a request message for requesting group entry sent by a terminal; the application server of the group communication service sends multicast control information to the terminal through the application server or through service node equipment of the terminal according to the request message, or the application server of the group communication service sends indication information containing identification information indicating Multimedia Broadcast Multicast Service (MBMS) bearing to the terminal, wherein the indication information is used for indicating the terminal to acquire the multicast control information corresponding to the identification information; the multicast control information is used for enabling the terminal to acquire group communication data.

With reference to the first aspect, in a first possible implementation manner, the multicast control information is specifically: and the terminal joins the MBMS bearing information of the group.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, before the sending, by the ue, multicast control information to the terminal, the method further includes: the application server of the group communication service sends a request message to a service mobile management entity of the terminal, wherein the request message is used for requesting to acquire the request message of the multicast control information; and the application server of the group communication service receives the multicast control information which is obtained and returned by a service base station or a multi-cell coordination entity of the terminal and indicated by a service mobile management entity of the terminal.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a third possible implementation manner, the sending, by the serving node device of the terminal, multicast control information to the terminal specifically includes: and the application server of the group communication service sends an indication message to a service mobile management entity of the terminal, wherein the indication message is used for indicating the service mobile management entity of the terminal to trigger a service base station of the terminal to send the multicast control information to the terminal.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a fourth possible implementation manner, before an application server of the group communication service sends, to a terminal, indication information including identification information indicating an MBMS bearer, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, the method further includes: the application server of the group communication service sends a request message to a service mobile management entity of the terminal, wherein the request message is used for requesting to acquire a multimedia multicast area identifier of a cell where the terminal is located; the application server of the group communication service receives the multimedia multicast area identifier which is obtained and returned by the service mobile management entity from the multi-cell coordination entity of the terminal; the application server of the group communication service sends indication information containing identification information indicating MBMS bearer to a terminal, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information, and specifically includes: and the application server of the group communication service sends indication information containing a multimedia multicast area identifier to the terminal, wherein the indication information is used for enabling the terminal to request to acquire the multicast control information corresponding to the multimedia multicast area identifier from the service base station.

With reference to the first aspect, in a fifth possible implementation manner, before the application server of the group communication service sends, according to the request message, multicast control information to the terminal through the application server itself or through a service node device of the terminal, or before the application server of the group communication service sends, to the terminal, indication information including identification information indicating MBMS bearer, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, the method further includes: the application server of the group communication service determines the terminal identification of the terminal through the request message; the application server of the group communication service sends multicast control information to the terminal through the application server itself or through the service node device of the terminal according to the request message, or the application server of the group communication service sends indication information containing identification information indicating MBMS bearer to the terminal, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information, and specifically includes: and the application server of the group communication service sends multicast control information to the terminal through the application server of the group communication service or through service node equipment of the terminal according to the terminal identification, or the application server of the group communication service sends indication information containing identification information indicating MBMS bearing to the terminal, wherein the indication information is used for indicating the terminal to acquire the multicast control information corresponding to the identification information.

With reference to the first aspect, in a sixth possible implementation manner, before an application server of the group communication service sends, to a terminal, indication information including identification information indicating an MBMS bearer, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, the method further includes: the application server of the group communication service determines the temporary mobile group identification code or the multimedia broadcast multicast session identification of the terminal from the request message; the application server of the group communication service sends indication information containing identification information indicating MBMS bearing to a terminal, wherein the indication information is used for indicating the terminal to acquire the multicast control information corresponding to the identification information, and specifically, the application server of the group communication service sends request information containing the temporary mobile group identification code or the multimedia broadcast multicast session identification to the terminal, and the indication information is used for indicating the terminal to request a service base station of the terminal to acquire the multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identification.

In a second aspect, an embodiment of the present application provides a method for transmitting a message, including: the base station receives the control message; and the base station sends multicast control information to the terminal or sends the multicast control information to an application server of the group communication service based on the control message, wherein the application server of the group communication service is used for forwarding the multicast control information to the terminal, and the multicast control information is used for enabling the terminal to acquire group communication data.

With reference to the second aspect, in a first possible implementation manner, the multicast control information is specifically multimedia broadcast multicast service MBMS bearer information of a group joined by the terminal.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the receiving, by the base station, a control message specifically includes: and the base station receives an identification information request message which is sent by the terminal and contains an indication MBMS bearer, wherein the request message is used for requesting to acquire the multicast control information corresponding to the identification information.

With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner, the identification information is specifically: a multimedia multicast area identifier of the cell in which the terminal is located, or a temporary mobile group identifier of the terminal, or a multimedia broadcast multicast session identifier of the cell in which the terminal is located; the base station sends multicast control information to the terminal based on the control message, specifically: and the base station sends multicast control information corresponding to the multimedia multicast area identifier, the temporary mobile group identifier or the multimedia broadcast multicast session identifier to the terminal.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a fourth possible implementation manner, the receiving, by the base station, a control message specifically includes: the base station receives indication information sent by a service mobile management entity of the terminal, wherein the indication information is sent to the service mobile management entity by an application server of a group communication service and is used for indicating the base station to send the multicast control information to the terminal; or the base station receives the control message, specifically: the base station receives indication information sent by a serving mobility management entity of the terminal, the indication information being sent to the serving mobility management entity by an application server of a group communication service and being used for instructing the base station to send the multicast control information to the application server of the group communication service.

In a third aspect, an embodiment of the present application provides a method for acquiring a message, including: the terminal sends a request message for requesting group entry to an application server of the group communication service; the terminal receives multicast control information, and the multicast control information is sent to the terminal by an application server of the group communication service through the terminal or service node equipment of the terminal according to the request message; or, the terminal receives indication information which is sent by an application server of the group communication service and contains identification information indicating Multimedia Broadcast Multicast Service (MBMS) bearing, and acquires the multicast control information corresponding to the identification information according to the indication information; the multicast control information is used for enabling the terminal to acquire group communication data.

With reference to the third aspect, in a first possible implementation manner, the multicast control information specifically includes: and the terminal joins the MBMS bearing information of the group.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, the terminal receives multicast control information, where the multicast control information is sent to the terminal by the application server of the group communication service according to the request message, and specifically: the terminal receives the multicast control message sent by the application server of the group communication service, the multicast control message is obtained by the application server of the group communication service sending an indication message to the service mobility management entity of the terminal, and the indication message is used for the service mobility management entity to send to the multi-cell coordination entity of the service base station or the terminal and to indicate the service base station or the multi-cell coordination entity to send the multicast control message to the application server of the group communication service.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a third possible implementation manner, the terminal receives multicast control information, where the multicast control information is sent to the terminal by an application server of the group communication service through a service node device of the terminal according to the request message, and specifically: the terminal receives the multicast control information sent by the service base station of the terminal, the multicast control information is obtained by sending an indication message to a service mobile management entity of the terminal by an application server of the group communication service, and the indication message is used for being sent to the service base station by the service mobile management entity and indicating the service base station to send the multicast control information to the terminal.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a fourth possible implementation manner, the receiving, by the terminal, indication information that includes identification information indicating an MBMS bearer and is sent by an application server of the group communication service, and acquiring, according to the indication information, the multicast control information corresponding to the identification information specifically includes: the terminal receives a multimedia multicast area identifier of a cell where the terminal is located from an application server of the group communication service, the multimedia multicast area identifier is obtained by the application server of the group communication service sending an indication message to a service mobility management entity of the terminal, and the indication message is used for indicating the service mobility management entity to obtain the multimedia multicast area identifier from a multi-cell coordination entity of the terminal and return the multimedia multicast area identifier to the application server of the group communication service; the terminal sends the multimedia multicast area identifier to a service base station of the terminal; and the terminal receives the multicast control information which is acquired and returned by the service base station according to the multimedia multicast area identifier.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a fifth possible implementation manner, the receiving, by the terminal, indication information that includes identification information indicating an MBMS bearer and is sent by an application server of the group communication service, and acquiring, according to the indication information, the multicast control information corresponding to the identification information specifically includes: the terminal receives a temporary mobile group identification code or a multimedia broadcast multicast session identification of the terminal from an application server of the group communication service, wherein the temporary mobile group identification code or the multimedia broadcast multicast session identification is acquired by the application server of the group communication service from a request message which is sent by the terminal and requests to enter a group; the terminal requests a service base station of the terminal to acquire multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identifier;

and the terminal receives multicast control information which is sent by a service base station of the terminal and corresponds to the temporary mobile group identification code or the multimedia broadcast multicast session identification.

In a fourth aspect, an embodiment of the present application provides an apparatus for transmitting a message, including: the receiving module is used for receiving a request message for requesting group entry, which is sent by a terminal; a sending module, connected to the receiving module, configured to send, according to the request message after the receiving module receives the request message, multicast control information to the terminal through itself or through a service node device of the terminal, or send, to the terminal, indication information including identification information indicating a multimedia broadcast multicast service MBMS bearer, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information; the multicast control information is used for enabling the terminal to acquire group communication data.

With reference to the fourth aspect, in a first possible implementation manner, the multicast control information is specifically MBMS bearer information of a group joined by the terminal.

With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the sending module is specifically configured to: sending a request message to a service mobile management entity of the terminal, wherein the request message is used for requesting to acquire the request message of the multicast control information; the receiving module is further configured to: after the sending module sends the request message, receiving the multicast control information which is obtained and returned by a service mobile management entity of the terminal and indicates a service base station or a multi-cell coordination entity of the terminal to obtain; the sending module is further configured to: and sending the multicast control information to the terminal.

With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a third possible implementation manner, the sending module is specifically configured to: and sending an indication message to a service mobile management entity of the terminal, wherein the indication message is used for indicating the service mobile management entity of the terminal to trigger a service base station of the terminal to send the multicast control information to the terminal.

With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a fourth possible implementation manner, the sending module is further configured to: sending a request message to a service mobile management entity of the terminal, wherein the request message is used for requesting to acquire a multimedia multicast area identifier of a cell where the terminal is located; the receiving module is further configured to: after the receiving module sends the request message, receiving the multimedia multicast area identifier which is obtained and returned by the service mobile management entity from a multi-cell coordination entity of the terminal; the sending module is further configured to: and sending indication information containing a multimedia multicast area identifier to the terminal, wherein the indication information is used for enabling the terminal to request to acquire the multicast control information corresponding to the multimedia multicast area identifier from the service base station.

With reference to the fourth aspect, in a fifth possible implementation manner, the method further includes: a determining module, connected to the sending module, for determining the terminal identifier of the terminal through the request message; the sending module is further configured to: after the determining module determines the terminal identifier, according to the terminal identifier, sending multicast control information to the terminal through the terminal or through a service node device of the terminal, or sending indication information containing identification information indicating MBMS bearer to the terminal, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information.

With reference to the fourth aspect, in a sixth possible implementation manner, the method further includes: a determining module, connected to the sending module, configured to determine a temporary mobile group identifier or a multimedia broadcast multicast session identifier of the terminal from the request message; the sending module is further configured to: after the determining module determines the temporary mobile group identifier or the multimedia broadcast multicast session identifier, the request information including the temporary mobile group identifier or the multimedia broadcast multicast session identifier is sent to the terminal, and the indication information is used for indicating the terminal to request a serving base station of the terminal to acquire the multicast control information corresponding to the temporary mobile group identifier or the multimedia broadcast multicast session identifier.

In a fifth aspect, an embodiment of the present application provides a message transmission apparatus, including: a receiving module for receiving a control message; a sending module, connected to the receiving module, configured to send, based on the control message, multicast control information to the terminal or send the multicast control information to an application server of a group communication service after the receiving module receives the control message, where the application server of the group communication service is configured to forward the multicast control information to the terminal, and the multicast control information is used to enable the terminal to obtain group communication data.

With reference to the fifth aspect, in a first possible implementation manner, the multicast control information is specifically multimedia broadcast multicast service MBMS bearer information of a group joined by the terminal.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the receiving module is specifically configured to: and receiving an identification information request message which is sent by the terminal and contains an indication MBMS bearer, wherein the request message is used for requesting to acquire the multicast control information corresponding to the identification information.

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation manner, the identification information is specifically: a multimedia multicast area identifier of the cell in which the terminal is located, or a temporary mobile group identifier of the terminal, or a multimedia broadcast multicast session identifier of the cell in which the terminal is located; the sending module is specifically configured to: and sending multicast control information corresponding to the multimedia multicast area identifier or the temporary mobile group identifier or the multimedia broadcast multicast session identifier to the terminal.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a fourth possible implementation manner, the receiving module is specifically configured to: receiving indication information sent by a serving mobility management entity of the terminal, the indication information being sent to the serving mobility management entity by an application server of a group communication service and being used for instructing the sending module to send the multicast control information to the terminal; or the receiving module is specifically configured to: receiving indication information sent by a service mobility management entity of the terminal, the indication information being sent to the service mobility management entity by an application server of a group communication service and being used for instructing the sending module to send the multicast control information to the application server of the group communication service.

In a sixth aspect, an embodiment of the present application provides an apparatus for acquiring a message, including: a sending module, configured to send a request message requesting for group entry to an application server of a group communication service; a receiving module, connected to the sending module, configured to receive multicast control information after the sending module sends the request message, where the multicast control information is sent to the terminal by an application server of the group communication service through the application server or a service node device of the terminal according to the request message; or, the terminal receives indication information containing identification information indicating MBMS bearer sent by an application server of the group communication service, and acquires the multicast control information corresponding to the identification information according to the indication information; the multicast control information is used for enabling the terminal to acquire group communication data.

With reference to the sixth aspect, in a first possible implementation manner, the multicast control information specifically includes: and the terminal joins the multimedia broadcast multicast service MBMS bearing information of the group.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a second possible implementation manner, the receiving module is specifically configured to: receiving the multicast control message sent by the application server of the group communication service, wherein the multicast control message is obtained by sending an indication message to a service mobility management entity of the terminal through the application server of the group communication service, and the indication message is used for being sent to the multi-cell coordination entity of the service base station or the terminal by the service mobility management entity and indicating the service base station or the multi-cell coordination entity to send the multicast control message to the application server of the group communication service.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a third possible implementation manner, the receiving module is specifically configured to: receiving the multicast control information sent by the serving base station of the terminal, wherein the multicast control information is obtained by sending an indication message to a serving mobility management entity of the terminal by an application server of the group communication service, and the indication message is used for being sent to the serving base station by the serving mobility management entity and indicating the serving base station to send the multicast control information to the terminal.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a fourth possible implementation manner, the receiving module is further configured to: receiving a multimedia multicast area identifier of a cell where the terminal is located from an application server of the group communication service, wherein the multimedia multicast area identifier is obtained by sending an indication message to a service mobility management entity of the terminal by the application server of the group communication service, and the indication message is used for indicating the service mobility management entity to obtain the multimedia multicast area identifier from a multi-cell coordination entity of the terminal and return the multimedia multicast area identifier to the application server of the group communication service; the sending module is further configured to: after the receiving module receives the multimedia multicast area identifier, sending the multimedia multicast area identifier to a service base station of the terminal; the receiving module is further configured to: and after the sending module sends the multimedia multicast area identifier, receiving the multicast control information which is obtained and returned by the service base station according to the multimedia multicast area identifier.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a fifth possible implementation manner, the receiving module is further configured to: receiving a temporary mobile group identification code or a multimedia broadcast multicast session identifier of the terminal from an application server of the group communication service, wherein the temporary mobile group identification code or the multimedia broadcast multicast session identifier is acquired by the application server of the group communication service from a request message for requesting to enter a group sent by the terminal; the sending module is further configured to: after the receiving module receives the temporary mobile group identification code or the multimedia broadcast multicast session identifier, requesting a service base station of the terminal to acquire multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identifier; the receiving module is further configured to: after the sending module sends the temporary mobile group identification code or the multimedia broadcast multicast session identifier, receiving multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identifier sent by a serving base station of the terminal.

In a seventh aspect, an embodiment of the present application provides an application server for group communication service, including: the data transmission interface is used for receiving a request message for requesting grouping sent by a terminal; a processor, connected to the data transmission interface, configured to send, according to the request message, multicast control information to the terminal through the data transmission interface or through a serving node device of the terminal, or send, to the terminal, indication information including identification information indicating a multimedia broadcast multicast service MBMS bearer, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information; the multicast control information is used for enabling the terminal to acquire group communication data.

With reference to the seventh aspect, in a first possible implementation manner, the multicast control information is specifically MBMS bearer information of a group joined by the terminal.

With reference to the seventh aspect or the first possible implementation manner of the seventh aspect, in a second possible implementation manner, the processor is further configured to: sending a request message to a service mobile management entity of the terminal through the data transmission interface, wherein the request message is used for requesting to acquire the request message of the multicast control information; receiving the multicast control information which is obtained and returned by a service base station or a multi-cell coordination entity of the terminal and indicated by a service mobile management entity of the terminal through the data transmission interface;

with reference to the seventh aspect or the first possible implementation manner of the seventh aspect, in a third possible implementation manner, the sending, by the processor, multicast control information to the terminal through a serving node device of the terminal specifically includes: and the processor sends an indication message to a service mobile management entity of the terminal through the data transmission interface, wherein the indication message is used for indicating the service mobile management entity of the terminal to trigger a service base station of the terminal to send the multicast control information to the terminal.

With reference to the seventh aspect or the first possible implementation manner of the seventh aspect, in a fourth possible implementation manner, the processor is further configured to: sending a request message to a serving mobility management entity of the terminal through the data transmission interface, wherein the request message is used for requesting to acquire a multimedia multicast area identifier of a cell where the terminal is located, and receiving the multimedia multicast area identifier acquired and returned by the serving mobility management entity from a multi-cell coordination entity of the terminal through the data transmission interface; the processor sends, to a terminal, indication information including identification information indicating MBMS bearer, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, and specifically includes: and the processor sends a multimedia multicast area identifier to the terminal through the data transmission interface, wherein the multimedia multicast area identifier is used for enabling the terminal to request to acquire the multicast control information from the service base station.

With reference to the seventh aspect, in a fifth possible implementation manner, the processor is further configured to: the processor determines the terminal identification of the terminal through the request message; the processor sends multicast control information to the terminal through the data transmission interface or through a service node device of the terminal according to the request message, or sends indication information including identification information indicating MBMS bearer to the terminal, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, and specifically: and the processor sends multicast control information to the terminal through the data transmission interface or through service node equipment of the terminal according to the terminal identifier and the request message, or an application server of the group communication service sends indication information containing identification information indicating MBMS bearing to the terminal, wherein the indication information is used for indicating the terminal to acquire the multicast control information corresponding to the identification information.

With reference to the seventh aspect, in a sixth possible implementation manner, the processor is further configured to: the processor determining a temporary mobile group identity or a multimedia broadcast multicast session identity of the terminal from the request message; the processor sends, to a terminal, indication information including identification information indicating MBMS bearer, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, and specifically includes: the processor sends the temporary mobile group identification code or the multimedia broadcast multicast session identifier to the terminal through the data transmission interface, wherein the temporary mobile group identification code or the multimedia broadcast multicast session identifier is used for the terminal to request a service base station of the terminal to acquire the multicast control information.

In an eighth aspect, an embodiment of the present application provides a base station, including: a data transmission interface for receiving a control message; and the processor is connected to the data transmission interface and is configured to send multicast control information to the terminal or send the multicast control information to an application server of a group communication service based on the control message after the data transmission interface receives the control information, where the application server of the group communication service is configured to forward the multicast control information to the terminal, and the multicast control information is used to enable the terminal to obtain group communication data.

With reference to the eighth aspect, in a first possible implementation manner, the multicast control information is specifically: and the terminal joins the multimedia broadcast multicast service MBMS bearing information of the group.

With reference to the eighth aspect or the first possible implementation manner of the eighth aspect, in a second possible implementation manner, the data transmission interface is specifically configured to: and receiving an identification information request message which is sent by the terminal and contains an indication MBMS bearer, wherein the request message is used for requesting to acquire the multicast control information corresponding to the identification information.

With reference to the second possible implementation manner of the eighth aspect, in a third possible implementation manner, the identification information is specifically: a multimedia multicast area identifier of the cell in which the terminal is located, or a temporary mobile group identifier of the terminal, or a multimedia broadcast multicast session identifier of the cell in which the terminal is located; the processor sends multicast control information to the terminal through the data transmission interface based on the control message, specifically: and the processor sends multicast control information corresponding to the multimedia multicast area identifier, the temporary mobile group identifier or the multimedia broadcast multicast session identifier to the terminal through the data transmission interface.

With reference to the eighth aspect or the first possible implementation manner of the eighth aspect, in a fourth possible implementation manner, the data transmission interface is specifically configured to: receiving indication information sent by a serving mobility management entity of the terminal, the indication information being sent to the serving mobility management entity by an application server of a group communication service and being used to instruct the data transmission interface to send the multicast control information to the terminal; or the data transmission interface is specifically configured to: receiving indication information sent by a service mobility management entity of the terminal, the indication information being sent to the service mobility management entity by an application server of a group communication service and being used for instructing the data transmission interface to send the multicast control information to the application server of the group communication service.

In a sixth aspect, an embodiment of the present application provides a terminal, including: a processor and a data transmission interface; the processor is used for sending a request message requesting for grouping to an application server of the group communication service through the data transmission interface after determining the request information requesting for grouping; the data transmission interface is configured to: receiving indication information which is returned by the application server of the group communication service according to the request message and contains identification information indicating the Multimedia Broadcast Multicast Service (MBMS) bearing; the processor is further configured to: acquiring the multicast control information corresponding to the identification information from a service base station of the terminal through the data transmission interface based on the indication information, wherein the multicast control information is used for enabling the terminal to acquire group communication data; the data transmission interface is further configured to: and receiving the multicast control information.

With reference to the ninth aspect, in a first possible implementation manner, the multicast control information specifically includes: and the terminal joins the MBMS bearing information of the group.

With reference to the ninth aspect or the first possible implementation manner of the ninth aspect, in a second possible implementation manner, the receiving, by the data transmission interface, indication information including identification information indicating an MBMS bearer, which is returned by the application server of the group communication service according to the request message specifically includes: the data transmission interface receives a multimedia multicast area identifier of a cell where the terminal is located from an application server of the group communication service, the multimedia multicast area identifier is obtained by sending an indication message to a service mobile management entity of the terminal by the application server of the group communication service, and the indication message is used for indicating the service mobile management entity to obtain the multimedia multicast area identifier from a multi-cell coordination entity of the terminal and return the multimedia multicast area identifier to the application server of the group communication service; the processor obtains the multicast control information corresponding to the identification information from a serving base station of the terminal through the data transmission interface based on the indication information, specifically: and the processor requests a service base station of the terminal to acquire the multicast control information corresponding to the multimedia multicast area identifier through the data transmission interface.

With reference to the ninth aspect or the first possible implementation manner of the ninth aspect, in a third possible implementation manner, the receiving, by the data transmission interface, indication information including identification information indicating an MBMS bearer, which is returned by the application server of the group communication service according to the request message specifically includes: the data transmission interface receives a temporary mobile group identification code or a multimedia broadcast multicast session identifier of the terminal from an application server of the group communication service, wherein the temporary mobile group identification code or the multimedia broadcast multicast session identifier is acquired by the application server of the group communication service from a request message which is sent by the terminal and requests to enter a group; the processor obtains the multicast control information corresponding to the identification information from a serving base station of the terminal through the data transmission interface based on the indication information, specifically: and the processor requests a service base station of the terminal to acquire the multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identification through the data transmission interface.

The beneficial effect of this application is as follows:

in the embodiment of the present application, after receiving a request message requesting for entering a group sent by a terminal, an application server of the group communication service itself or through a service node device of the terminal sends multicast control information to the terminal, or the application server of the group communication service instructs the terminal to acquire the multicast control information, that is, after the terminal enters the group, the application server of the group communication service may directly acquire the multicast control information, and then directly acquire group communication data through the multicast control information, instead of waiting for the multicast control information to be periodically sent, and then acquire the group communication data, thereby achieving the technical effect of reducing the time delay of data transmission. Drawings

FIG. 1 is a system architecture diagram of a group communication mechanism in the prior art;

FIG. 2 is a flow chart illustrating a method for transmitting information based on GCSE AS in an embodiment of the present application; fig. 3 is a flowchart illustrating establishing an MBMS bearer and transmitting data via the MBMS bearer in a method for transmitting information according to an embodiment of the present application;

FIG. 4 is a flowchart illustrating a GCSE AS acquiring multicast control information in a method for transmitting information according to an embodiment of the present application;

FIG. 5 is a flowchart illustrating a method for transmitting information according to an embodiment of the present application, in which a GCSE AS acquires an MBSFN area ID;

FIG. 6 is a flowchart of a method for transmitting information based on e B according to an embodiment of the present application;

FIG. 7 is a flow chart of a method of obtaining information in an embodiment of the present application; fig. 8 is a flowchart illustrating a method for acquiring information according to the present application, where a UE acquires multicast control information corresponding to identification information according to indication information;

fig. 9 is an interaction diagram of a plurality of devices when an eNB directly sends multicast control information to a UE in an embodiment of the present application;

fig. 10 is an interaction diagram of a plurality of devices when an eNB forwards multicast control information to a UE through a GCSE AS in the second embodiment of the present application;

fig. 11 is a flowchart illustrating interaction among multiple devices when a UE requests an eNB to acquire multicast control information in a third embodiment of the present application;

fig. 12 is a flowchart illustrating interaction among multiple devices when a UE sends a group name requesting to join a group to a GCSE AS to acquire multicast control information according to a fourth embodiment of the present application;

FIG. 13 is a first block diagram of an apparatus for transmitting information in the embodiment of the present application;

FIG. 14 is a second structural view of an apparatus for transmitting information in the embodiment of the present application;

fig. 15 is a structural diagram of an apparatus for acquiring information in the embodiment of the present application;

FIG. 16 is a block diagram of the GCSE AS in the embodiment of the present application;

FIG. 17 is a diagram illustrating an eNB structure in an embodiment of the present application;

fig. 18 is a structural diagram of a UE in the embodiment of the present application. Detailed Description

In order to solve the technical problem in the prior art that a delay of acquiring group communication data by a newly added terminal is long when the group communication data is transmitted in an MBMS manner, an embodiment of the present application provides a method for transmitting information, which specifically includes: an application server of group communication service receives a request message for requesting group entry sent by a terminal; and the application server of the group communication service sends the multicast control information to the terminal through the application server or the service node equipment of the terminal according to the request message, or the application server of the group communication service indicates the terminal to acquire the multicast control information. That is to say, after the terminal enters the group, the multicast control information can be directly acquired, and then the group communication data is directly acquired through the multicast control information, and the group communication data is acquired without waiting for the periodic transmission of the multicast control information, so that the technical effect of reducing the time delay of data transmission is achieved. To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

In a first aspect, an embodiment of the present application provides a method for transmitting information, where the method is applied in a GCSE AS (Group Communication Service enabled application server, Group Communication monthly application server), please refer to fig. 2, and the method specifically includes the following steps:

step S201: GCSE AS receives a request message for requesting grouping sent by UE (User Equipment: terminal);

step S202, the GCSE AS sends multicast control information to the UE through the GCSE AS or through the service node equipment of the UE according to the request message, or the GCSE AS sends indication information containing identification information indicating MBMS bearing to the UE, wherein the indication information is used for indicating the UE to acquire the multicast control information corresponding to the identification information; the multicast control information is used to enable the UE to acquire group communication data.

Before steps S201 and S202, an MBMS bearer may be established and data transmission may be performed through the established MBMS bearer, as shown in fig. 3, for a flowchart of establishing an MBMS bearer and performing data transmission, the method specifically includes the following steps:

step S301: GCSE AS requests the MBMS server BMSC (Broadcast Multicast Service center) to establish MBMS load;

step S302, the BMSC triggers the MBMS load establishing process, and then the MBMS load is established between the BMSC, the SGW (Serving gateway), the MME (Mobility Management Entity) and the eNB (E-UTRAN NodeB: base station);

step S303, the eNB starts to periodically send the multicast control information at the wireless interface after receiving the MBMS bearing establishment message, and the UE can directly receive the multicast control information sent by the eNB if the UE is positioned in the group communication system;

step S304, the group communication data reaches GCSE AS and then is transmitted to UE along with the load through MBMS. In the transmission process of the group communication data, if the UE joins the group communication system before the eNB transmits the multicast control information in a broadcast manner, the UE may determine the subframe information of the bearer group communication data directly through the multicast control information to further acquire the corresponding group communication data, whereas if the UE joins the group communication system after transmitting the multicast control information in a broadcast manner at e B, the UE may not receive the multicast control information broadcast by the eNB in time, in this case, the UE can obtain the multicast control information through steps S201 and S202, and then receive the group communication data directly through the multicast control information, without waiting for the next period to receive the multicast control information broadcasted by the eNB, and then receive the group communication data, so that the technical effect of reducing the delay is achieved.

In the specific implementation process, in step S201, the request information received by the GCSE AS may include various information, such AS: the UE identifier, authentication information, identity identifier, Qos (Quality of Service) information, capability parameter of the UE itself to receive information, one or more information in a group number of a group requested to be added by the UE, and the like, which are not limited in the embodiment of the present application.

In step S202, the information acquired by the UE may only include multicast control information, or may include some other information, for example: the information acquired by the UE is an MCCH (Multicast Control Channel) message, where the MCCH message includes both Multicast Control information and Control fields corresponding to other Multicast services, and the embodiment of the present application is not limited thereto.

In a specific implementation process, the multicast control information provides some auxiliary information for the MBMS bearer information of the group joined by the UE, and is used to help the UE to read service data, where the multicast control information indicates a receiving mode and a receiving address of the group communication data, where the receiving address is used to indicate subframe allocation of an MBSFN (multicast multiple access Network) region, and through the subframe allocation, the UE can receive the group communication data from a corresponding subframe.

For example: the multicast control information includes an MSP (MBMS scheduling period) configuration, and the MSP configuration is configured with subframe information for transmitting the MBMS in a scheduling period, for example: subframes 1, 3, 5, and 7, wherein the first subframe (e.g., subframe 1) of the current MSP may obtain MSI (MBMS scheduling information) information, the MSI indicates a correspondence between the subframe and specific multicast control information, and further may determine a subframe for transmitting data through the multicast control information, and then the UE may obtain group communication data carried by the subframe. In step S202, the manner of acquiring the multicast control information is different based on the difference of the information included in the request message requesting for grouping in step S201, and two of them are listed below for introduction, but of course, in the specific implementation process, the method is not limited to the following two cases.

AS a first optional implementation manner, the GCSE AS may further determine the UE identity of the UE through the request message requesting for grouping, for example: the request message shows the carried UE identity, that is: the request information definitely includes a field corresponding to the UE identification, and the GCSE AS can directly acquire the UE identification by reading the field; the request message implicitly carries the UE identity, that is: the request message does not include a field corresponding to the UE identity, but the GCSE AS may infer the UE identity through a combination of some information in the request message, such AS: the request information contains a part of fields of the UE identification, and the UE identification and the like can be deduced through the part of fields.

The UE standard port and the example port are as follows: an IMSI (International Mobile Subscriber Identity), a P-TMSI (Packet temporal Mobile Subscriber Identity), a soft Identity allocated by the GCSE AS (i.e., a dedicated UE Identity allocated by the GCSE, which only can be resolved by the GCSE, and cannot be resolved by any other network element).

Further, after determining the UE identity corresponding to the UE through the request message, the GCSE AS may send the multicast control information to the UE through itself or through a serving node device of the UE according to the UE identity, or send, to the terminal, indication information including identification information indicating MBMS bearer, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information. These three cases will be described separately below.

First, multicast control information is sent to a UE by itself, and before sending the multicast control information, the multicast control information needs to be obtained first, please refer to fig. 4, which can specifically be obtained in the following manner:

step S401, GCSE AS sends the service MME (Mobility Management Entity:

MME) sends a request message, wherein the request message is used for requesting to acquire the request message of the multicast control information; step S402, the GCSE AS receives the multicast control information which is acquired and returned by the service MME of the UE from the service eNB or the MCE of the UE.

In a specific implementation process, in step S401, the GCSE AS first determines, through the UE identifier, a server corresponding to the UE) to query the MME corresponding to the UE, or query the MEE from its own database, which is not limited in this embodiment of the present application.

The GCSE AS then indicates to the serving MME: solicit multicast control information;

after receiving the indication message, the MME may request multicast control information in various ways, two of which are described below.

One possible implementation manner is that the MME determines, through the UE identifier, an MCE (Multi-cell/Multi coding Entity: MCE) corresponding to the UE, and then sends to the MCE: requesting multicast control information, and after receiving the request message, the MCE determines multicast control information corresponding to the UE and sends the multicast control information to the GCSE AS;

another possible implementation manner is that the MME determines, through the UE identifier, an MCE corresponding to the UE, and then obtains, from the MCE, an MBSFN area ID (Multimedia multicast service Single Frequency Network area ID: Multimedia multicast area identifier) of a cell in which the UE is located; then determines the serving eNB (E-UTRAN NodeB: base station) corresponding to the UE, and then sends to the serving eNB: and after receiving the request message, the serving eNB determines the multicast control message corresponding to the UE through the MBSFN area ID and sends the multicast control information to the GCSE AS.

When the multicast control information is sent to the GCSE AS, whether the MBMS bearer service is in an active state (or a preempted state) may also be sent to the GCSE AS, for example: if the MBMS bearer service is in an inactive state (or a preempted state), the GCSE AS sends the multicast control information to the UE, which indicates that the service is in an inactive state (or a preempted state), or the GCSE AS may also directly not send the multicast control information to the UE when the service is in an inactive state (or a preempted state).

After receiving the multicast control information based on step S402, the GCSE AS directly sends the multicast control information to the UE, and the GCSE AS may also send whether the MBMS bearer service is active (or in a preempted state) to the UE. Second, sending multicast control information to the UE through a serving node device of the UE specifically includes:

the GCSE AS sends an indication message to a serving MME of the UE, wherein the indication message is used for indicating the serving MME of the UE to trigger a serving eNB of the UE to send multicast control information to the UE.

In the specific implementation process, the GCSE AS first searches the MME corresponding to the UE according to the UE identity, and then indicates to this MME: sending multicast control information to a certain UE;

the MME determines the range of the UE according to the UE identification, further finds the MCE corresponding to the UE, and then acquires the MBSFN area ID of the cell where the UE is located from the MCE;

then, the MME determines a service eNB corresponding to the UE according to the UE identification, then sends an indication message to the service eNB, wherein the indication message comprises an MBSFN area ID, and further informs the eNB to send multicast control information to the UE through the MBSFN area ID. While the eNB sends the multicast control information to the UE, the eNB may also send whether the MBMS bearer service is in an activated state (or a preempted state) to the UE, for example: if the MBMS bearer service is in an inactive state (or a preempted state), the eNB sends the multicast control information to the UE, and at the same time, indicates that the service is in an inactive state (or a preempted state). Or when the service is in an inactive state (or a preempted state), the multicast control information is not directly sent to the UE.

The method is different from the first method in that when the multicast control information is sent to the UE, the multicast control information is directly sent to the UE through the eNB without being forwarded through the GCSE AS, so that the time for sending the multicast control information to the UE is saved, and the technical effect of further reducing the time delay is achieved.

Thirdly, the GCSE AS sends, to the terminal, indication information including identification information indicating MBMS bearer, where the indication information is used to indicate the terminal to acquire multicast control information corresponding to the identification information, and in this case, the GCSE AS needs to first acquire the identification information including MBMS bearer, please refer to fig. 5, specifically, the identification information of MBMS bearer can be acquired in the following manner:

step S501: the GCSE AS sends an solicited message to a serving MME of the UE, and the solicited message is used for requesting to acquire the MBSFN area ID of the cell where the UE is located;

step S502, the GCSE AS receives the MBSFN area ID which is acquired and returned by the serving MME from the MCE of the UE.

In a specific implementation process, in step S501, the GCSE AS first determines an MME corresponding to the UE through the UE identifier, and then indicates to the MME: solicit for the MCCH message; in step S502, MME determines the MCE of the cell where the UE is located according to the UE identifier, and queries the MCE for the MBSFN area ID (Multimedia multicast service Single Frequency Network area ID: Multimedia multicast area i or identifier) of the cell where the UE is located;

then the MCE returns the MBSFN area ID to the MME;

the MME then returns the MBSFN area ID to the GCSE AS.

After receiving the MBSFN area ID returned by the MME in step S502, the GCSE AS sends the MBSFN area ID to the UE, and the UE requests the eNB corresponding to the UE to acquire multicast control information through the MBSFN area ID; in general, an eNB supports a plurality of MBSFN areas and also stores a plurality of multicast control information corresponding to the plurality of MBSFN areas. Therefore, the eNB determines multicast control information corresponding to the MBSFN area ID from the multicast control information according to the MBSFN area ID requested by the UE, and transmits the multicast control information corresponding to the MBSFN area ID to the UE. When the eNB sends the multicast control information to the UE, it may also send whether the MBMS bearer service is in an active state (or a preemptive state) to the UE, for example, if the service is in an inactive state (or a preemptive state), the eNB sends the multicast control information to the UE, and at the same time, indicates that the service is in an inactive state (or a preemptive state), or directly does not send the multicast control information to the UE when the service is in an inactive state (or a preemptive state).

The above third mode is different from the first and second modes in that the UE passively receives the multicast control information in the first or second mode, and actively requests to acquire the multicast control information in the third mode.

AS a second optional implementation manner, when the request information includes a group number of a group in which the UE is located, the GCSE AS may also first acquire identification information including an MBMS bearer, where the identification information is, for example: TMGI (temporal Mobile Group Identity) or MBMS session ID of the UE;

in the specific implementation process, because the request message contains the group number of the group requested to be added by the UE, the GCSE AS can directly map the group number into the MBMS service identifier TMGI or the MBMS session ID;

in this case, the GCSE AS sends, to the UE, indication information including identification information of the MBMS bearer, where the indication information is used to indicate the UE to acquire multicast control information corresponding to the identification information, and specifically includes:

the GCSE AS sends the TMGI or MBMS session ID to the UE, and the TMGI or MBMS session ID is used for the UE to request the service eNB of the UE to acquire multicast control information; wherein, the GCSE AS returns the group number to the UE after mapping the group number to the TMGI or the MBMS session ID;

after receiving the TMGI or MBMS session ID, the UE requests a service eNB connected with the UE to acquire a multicast control message by taking the TMGI or MBMS session ID as a key word;

the serving eNB connected to the UE acquires the corresponding multicast control information according to the TMGI or the MBMS session ID, and sends the multicast control information to the UE through a dedicated signaling. Or when the MBMS bearer service is in an inactive state (or a preempted state), the multicast control information is not directly sent to the UE.

According to the scheme, when the multicast control information is acquired, only the interaction among the UE, the GCSE AS and the eNB is needed, and the number of the interaction steps is less than that of the former step of acquiring the multicast control information through the UE identifier, so that the speed of acquiring the multicast control information can be increased, and the time delay is further reduced.

After the UE acquires the multicast control information based on step S202, if the GCSE AS bearer service is activated, the UE may immediately receive the group communication data through the MSMS bearer. And if the GCSE AS bearer service is in an inactive state (or a preempted state), the UE is in a waiting state for reception.

In a second aspect, based on the same inventive concept, an embodiment of the present application provides a method for transmitting data, where the method is applied to an eNB, and please refer to fig. 6, the method for transmitting data specifically includes the following steps: step S601: the eNB receives the control message;

and step S602, the eNB sends multicast control information to the UE or sends the multicast control information to a GCSE AS based on the control message, the GCSE AS is used for forwarding the multicast control information to the UE, and the multicast control information is used for enabling the UE to acquire group communication data. Optionally, the multicast control information specifically includes: the UE joins the MBMS bearer information of the group.

Optionally, the eNB receives the control message in step S601, specifically: the eNB receives an identification information request message which is sent by the UE and contains an indication MBMS bearer, wherein the request message is used for requesting to acquire multicast control information corresponding to the identification information.

Optionally, the identification information specifically includes: the multimedia multicast area identification of the cell where the UE is located, or the TMGI of the UE or the MBMS session ID of the cell where the UE is located;

in step S601, the eNB sends multicast control information to the UE based on the control message, specifically: and the eNB sends multicast control information corresponding to the multimedia multicast area identifier or the TMGI or MBMS session ID to the UE.

Optionally, the eNB receives the control message in step S601, specifically: the eNB receives indication information sent by a serving MME of the UE, wherein the indication information is sent to the serving MME by a GCSE AS and is used for indicating the eNB to send multicast control information to the UE; or

The eNB receives the control message, specifically: the eNB receives indication information transmitted by a serving MME of the UE, the indication information being transmitted by the GCSE AS to the serving MME and being for instructing the eNB to transmit multicast control information to the GCSE AS.

In a third aspect, based on the same inventive concept, an embodiment of the present application provides a method for acquiring a message, where the method is applied to a UE, please refer to fig. 7, and the method specifically includes:

step S701: UE sends request message for requesting group entry to GCSE AS;

step S702, UE receives multicast control information sent to UE by GCSE AS through itself or UE service node device according to request message, or UE receives indication information containing identification information indicating MBMS bearing sent by GCSE AS and obtains multicast control information corresponding to the identification information according to the indication information; the multicast control information is used to enable the UE to acquire group communication data. Optionally, the multicast control information specifically includes: the UE joins the MBMS bearer information of the group.

Optionally, the UE receives multicast control information, and the multicast control information is sent to the UE by the GCSE AS itself according to the request message, specifically:

the UE receives a multicast control message sent by the GCSE AS, the multicast control message is acquired by sending an indication message to a serving MME of the UE through the GCSE AS, and the indication message is used for being sent to an MCE of the serving eNB or the UE by the serving MME and indicating the serving eNB or the MCE to send the multicast control message to the GCSE AS. Optionally, the UE receives multicast control information, where the multicast control information is sent to the UE by the GCSE AS through a serving node device of the UE according to the request message, and the specific steps are AS follows:

the UE receives multicast control information sent by a serving eNB of the UE, the multicast control information is obtained by sending an indication message to a serving MME of the UE by a GCSE AS, and the indication message is used for sending the multicast control information to the serving eNB by the serving MME and indicating the serving eNB to send the multicast control information to the UE.

Optionally, the UE receives indication information sent by the GCSE AS and including identification information indicating MBMS 7:

step S801: the UE receives the MBSFN area ID of the cell where the UE is located from the GCSE AS, the MBSFN area ID is obtained by sending an indication message to a serving MME of the UE by the GCSE AS, and the indication message is used for indicating the serving MME to obtain the MBSFN area ID from the MCE of the UE and return the MBSFN area ID to the GCSE AS;

step S802, the UE sends the MBSFN area ID to a service eNB of the UE;

step S803, the UE receives the multicast control information which is acquired and returned by the service eNB according to the MBSFN area ID.

Optionally, the UE receives indication information that includes identification information indicating MBMS bearer and is sent by the GCSE AS, and acquires multicast control information corresponding to the identification information according to the indication information, which specifically includes:

the UE receives a TMGI or MBMS session ID of the UE from the GCSE AS, and the TMGI or MBMS session ID is acquired by the GCSE AS from a request message which is sent by the UE and requests to enter the group;

the UE requests a service eNB of the UE to acquire multicast control information corresponding to the TMGI or MBMS session ID;

the UE receives multicast control information corresponding to the TMGI or MBMS session ID transmitted by a serving eNB of the UE.

The method for transmitting data and the method for acquiring data described in the embodiments of the present application are described below by using several specific embodiments, and the following embodiments mainly describe several specific implementation processes of interaction among the GCSE AS, the eNB, and the UE. It should be noted that the examples in the present application are only for explaining the present application, and are not used for limiting the present application. All embodiments that come within the meaning of the application are to be understood as being within the scope of the application and the skilled person will naturally know how to adapt them according to the teaching of the application.

Example one

In this embodiment, since the first aspect of the embodiment of the present application has introduced a process in which a group communication system establishes an MBMS bearer and performs data transmission through the established MBMS bearer, how to acquire multicast control information by a newly added UE is introduced based on the established MBMS bearer in the embodiment of the present application, please refer to fig. 9, where the interaction process specifically includes the following steps:

step S901, UE newly joining in group sends request message for requesting to join in group to GCSE AS, and the message displays the ID carrying UE, which specifically comprises: the IMSI (the hypothesis is 460023513574685), and then the IMSI is added into the group, wherein the first three digits '460' in the IMSI represent that the country is China, the fourth five digits '02' represent an operator, and the latter ten digits are freely distributed;

step S902, GCSE AS searches MME corresponding to UE in HSS according to IMSI of UE, and indicates the MME: sending an MCCH message to a certain UE;

step S903, the MME finds the MCE of the cell where the UE is located according to the IMSI of the UE, inquires the MBSFN area ID of the cell to the MCE, the MCE returns the MBSFN area ID corresponding to the cell to the MME, the MCE finds the eNB corresponding to the UE according to the IMSI corresponding to the UE, and sends an indication message to the eNB: instructing the eNB to send an MCCH message to the UE, wherein the instruction message contains an MBSFN area ID;

step S904: the eNB does not need to wait for a repeated transmission mechanism of the multicast control information and transmits the multicast control information corresponding to the MBSFN area ID to the UE as soon as possible. And when the multicast control information is sent, whether the MBMS bearer service is in an activated state (or a preempted state) or not can be sent to the UE, or when the MBMS bearer service is in an inactivated state (or a preempted state), the multicast control information is not sent to the UE directly.

Step S905, after the UE receives the multicast control information, if the Gao MBMS bearer service is in an activated state, the UE immediately receives the group communication data through the MBMS bearer; and if the MBMS bearer service is in an inactive state (or a preempted state), the UE is in a waiting receiving state. Example two

In this embodiment, the eNB forwards the multicast control information to the UE through the GCSE AS, since the first aspect of the embodiment of the present application has introduced a process in which the group communication system establishes an MBMS bearer and performs data transmission through the established MBMS bearer, how to acquire the multicast control information by introducing a newly added UE based on the established MBMS bearer in the embodiment of the present application is described with reference to fig. 10, where the interaction process specifically includes the following steps:

step S1001: the UE newly joining the group sends a request message for requesting to join the group to the GCSE AS, and the message displays a message carrying a UE identifier, which specifically comprises the following steps: P-TMSI, (typically a 40 bit string) and then joined into groups;

step S1002: the GCSE AS searches the MME corresponding to the UE in the HSS according to the P-TMSI of the UE, and indicates the MME: solicit for the MCCH message;

step S1003, MME finds the MCE of the cell where the UE is located according to the P-TMSI of the UE, acquires the MBSFN area ID of the cell where the UE is located from the MCE, and the MME determines the eNB corresponding to the UE according to the UE identification and then sends the UE to the eNB: solicit multicast control information (including the MBSFN area ID);

step S104, when the service for transmitting the multicast control message between the eNB and the GCSE AS is in an activated state, the eNB sends the multicast control message to the GCSE AS, otherwise, the service is in a waiting-to-send state; step S1005, when the service for transmitting the multicast control message between the GCSE AS and the UE is in the activated state, the GCSE AS sends the multicast control message to the UE. If the service is in the inactive state (or the preempted state), the GCSE AS sends the multicast control information to the UE, and the service is in the inactive state (or the preempted state) at the same time. Or when the MBMS service is in an inactive state (or a preempted state), the multicast control information is not directly sent to the UE.

Step S1006, after the UE receives the multicast control information, if the MBMS bearer service is in the activated state, the UE immediately receives the group communication data through the bearer. If the MBMS bearer service is in an inactive state (or a preempted state), the UE is in a waiting state for reception.

EXAMPLE III

In this embodiment, since a process of establishing an MBMS bearer by a group communication system and performing data transmission through the established MBMS bearer has been introduced in the first aspect of the embodiment of the present application, how to acquire multicast control information by a newly added UE is introduced based on the established MBMS bearer in the embodiment of the present application, please refer to fig. 11, where the interaction process specifically includes the following steps:

step 1101, the UE newly joining the group requests the GCSE AS to join the group, the message carries the UE identification, specifically: a soft identity assigned by the GCSE AS (e.g., 12345678).

Step 1102: the GCSE AS searches the MME corresponding to the UE from the database of the GCSE AS according to the soft identifier, and indicates the soft identifier to the MME: the MCCH message is solicited.

Step 1103, the MME finds the MCE corresponding to the cell where the UE is located according to the soft identifier, and queries the MBSFN area ID corresponding to the cell to the MCE.

And step S1104, the MCE returns the MBSFN area ID corresponding to the cell to the MME.

Step S1105: the MME returns the MB SFN area corresponding to the cell where the UE is positioned to the GCSE AS

ID。

Step 1106, GCSE AS indicates the MBSFN area ID for sending the group service to the UE. Step 1107, UE requests MCCH message to eNB, carrying keyword MBSFN area ID. Step 1108, eNB queries corresponding MCCH message according to MBSFN area ID requested by UE and sends the MCCH message to the UE;

step 1109, UE receives the group communication data through MBMS load immediately after receiving MCCH message.

Example four

In this embodiment, the UE sends to the GCSE AS a group name that the eNB requests to join the group, then acquires the TMGI from the GCSE AS by the group name, and further acquires the multicast control information from the eNB by the TMGI, and in this embodiment, how to acquire the multicast control information by the newly joined UE is introduced based on the established MBMS bearer, please refer to fig. 12, where the interaction process includes the following steps:

step S1201: and the UE newly joining the group sends a request message for requesting to join the group to the GCSE AS, and the message carries the UE identification. Simultaneously, the UE informs the GCSE AS of the group name of the group which the UE wants to join; step S1202, GCSE-AS maps the group number notified by UE to MBMS service identification TMGI, then sends the mapping result (that is, TMGI) to UE;

step S1203, UE uses TMGI as key word to request e B multicast control information; step S1204, eNB finds out the correspondent multicast control message according to TMGI, and judge whether the business of transmitting the multicast control message between UE and eNB is in the activated state (or seized state), when the business is in the activated state, send the multicast control message to UE directly through the specialized signalling, and when the business is in the inactivated state (or seized state), is in waiting to send the state;

step S1205, after the UE receives the multicast control information, the UE directly receives the group communication data through the MBMS bearer.

In a fourth aspect, based on the same inventive concept, an embodiment of the present application provides an apparatus for transmitting a message, please refer to fig. 13, which specifically includes:

a receiving module 130, configured to receive a request message requesting for group entry sent by a UE;

a sending module 131, connected to the receiving module 130, configured to send, according to the request message after the receiving module 130 receives the request message, multicast control information to the UE through itself or through a serving node device of the UE, or send, to the UE, indication information including identification information indicating MBMS bearer, where the indication information is used to indicate the UE to obtain multicast control information corresponding to the identification information; the multicast control information is used to enable the UE to acquire group communication data.

Optionally, the multicast control information specifically includes: the UE joins the MBMS bearer information of the group.

Optionally, the sending module 131 is specifically configured to: sending a request message to a serving MME of the UE, wherein the request message is used for requesting to acquire a request message of multicast control information;

the receiving module 130 is further configured to: after the sending module 131 sends the request message, receiving multicast control information that the serving MME of the UE instructs the serving eNB or MCE of the UE to obtain and return;

the sending module 131 is further configured to: and sending the multicast control information to the UE.

Optionally, the sending module 131 is specifically configured to:

and sending an indication message to a serving MME of the UE, wherein the indication message is used for indicating the serving MME of the UE to trigger a serving eNB of the UE to send multicast control information to the UE.

Optionally, the sending module 131 is further configured to: sending a request message to a serving MME of the UE, wherein the request message is used for requesting to acquire the MBSFN area ID of a cell where the UE is located;

the receiving module 130 is further configured to: after the sending module 131 sends the request message, receiving the MBSFN area ID that the serving MME acquires and returns from the MCE of the UE;

the sending module 131 is further configured to: and transmitting indication information including the MBSFN area ID to the UE, wherein the indication information is used for requesting the UE to acquire multicast control information corresponding to the MBSFN area ID from the serving eNB.

Optionally, the method further includes: a determining module, connected to the sending module 131, configured to determine the UE identity of the UE through the request message;

the sending module 131 is further configured to: after the determining module determines the UE identifier, according to the UE identifier, multicast control information is sent to the UE through itself or through a serving node device of the UE, or indication information including identification information indicating MBMS bearer is sent to the UE, where the indication information is used to indicate the UE to acquire multicast control information corresponding to the identification information.

Optionally, the method further includes: a determining module, connected to the sending module 131, configured to determine the TMGI or MBMS session ID of the UE from the request message;

the sending module 131 is further configured to: after the determining module determines the TMGI or the MBMS session ID, sending request information including the TMGI or the MBMS session ID to the UE, where the indication information is used to indicate the UE to request the serving eNB of the UE to acquire multicast control information corresponding to the TMGI or the MBMS session ID.

In a fifth aspect, based on the same inventive concept, an embodiment of the present application provides a message transmission apparatus, please refer to fig. 14, where the apparatus includes:

a receiving module 140, configured to receive a control message;

the sending module 141, connected to the receiving module 140, is configured to send, based on the control message, multicast control information to the UE or send multicast control information to the GCSE AS after the receiving module 140 receives the control message, where the GCSE AS is configured to forward the multicast control information to the UE, and the multicast control information is configured to enable the UE to obtain group communication data.

Optionally, the receiving module 140 is specifically configured to: and receiving a request message which is sent by the UE and contains identification information indicating MBMS bearing, wherein the request message is used for requesting to acquire multicast control information corresponding to the identification information. Optionally, the identification information specifically includes: MBSFN area ID of the cell where the UE is located, TMGI of the UE or MBMS session ID of the cell where the UE is located;

the sending module 141 is specifically configured to: and sending multicast control information corresponding to the MBSFN area lD, the TMGI or the MBMS session ID to the UE.

Optionally, the receiving module 140 is specifically configured to: receiving indication information sent by a serving MME of the UE, wherein the indication information is sent to the serving MME by a GCSE AS and is used for indicating a sending module to send multicast control information to the UE; or

The receiving module 140 is specifically configured to: receiving indication information sent by a serving MME of the UE, the indication information being sent to the serving MME by the GCSE AS and being used for indicating a sending module to send multicast control information to the GCSE AS.

In a sixth aspect, based on the same inventive concept, an embodiment of the present application provides an apparatus for acquiring a message, please refer to fig. 15, which specifically includes:

a sending module 150, configured to send a request message requesting grouping to the GCSE AS;

a receiving module 151, connected to the sending module 150, configured to receive multicast control information after the sending module 150 sends the request message, where the multicast control information is sent to the UE by the GCSE AS through its own service node device or a service node device of the UE according to the request message, or the UE receives indication information that includes identification information indicating MBMS bearer and is sent by the GCSE AS, and obtains multicast control information corresponding to the identification information according to the indication information; the multicast control information is used to enable the UE to acquire group communication data.

Optionally, the receiving module 151 is specifically configured to:

and receiving a multicast control message sent by the GCSE AS, wherein the multicast control message is acquired by sending an indication message to a serving MME of the UE through the GCSE AS, and the indication message is used for being sent to an MCE of the serving eNB or the UE by the serving MME and indicating the serving eNB or the MCE to send the multicast control message to the GCSE AS.

Optionally, the receiving module 151 is specifically configured to:

receiving multicast control information sent by a serving eNB of the UE, wherein the multicast control information is obtained by sending an indication message to the serving MME of the UE by a GCSE AS, and the indication message is used for sending the multicast control information to the serving eNB by the serving MME and indicating the serving eNB to send the multicast control information to the UE. Optionally, the receiving module 151 is further configured to: receiving an MBSFN area ID of a cell where the UE is located from a GCSE AS, wherein the MBSFN area ID is obtained by sending an indication message to a serving MME of the UE by the GCSE AS, and the indication message is used for indicating the serving MME to obtain the MBSFN area ID from an MCE of the UE and return the MBSFN area ID to the GCSE AS;

the sending module 150 is further configured to: after the receiving module 151 receives the MBSFN area ID, it will

The MBSFN area ID is sent to a service eNB of the UE;

the receiving module 151 is further configured to: after the transmitting module 150 transmits the MBSFN area ID, the multicast control information acquired and returned by the serving eNB according to the MBSFN area ID is received.

Optionally, the receiving module 151 is further configured to: receiving a TMGI or MBMS session ID of the UE from the GCSE AS, wherein the TMGI or MBMS session ID is acquired by the GCSE AS from a request message which is sent by the UE and requests to enter a group;

the sending module 150 is further configured to: after receiving the TMGI or MBMS session ID, the receiving module 151 requests the serving eNB of the UE to acquire multicast control information corresponding to the TMGI or MBMS session ID;

the receiving module 151 is further configured to: after the transmission module 150 transmits the TMGI or MBMS session ID, the multicast control information corresponding to the TMGI or MBMS session ID transmitted by the serving eNB of the UE is received.

In a seventh aspect, based on the same inventive concept, an embodiment of the present application provides a GCSE AS, please refer to fig. 16, which specifically includes:

a data transmission interface 160, configured to receive a request message requesting for grouping sent by a UE;

a processor 161, connected to the data transmission interface 160, configured to send, after the data transmission interface 160 receives the request message, multicast control information to the UE through the data transmission interface 160 according to the request message; or sending indication information containing identification information indicating MBMS bearing to the UE, wherein the indication information is used for indicating the UE to acquire multicast control information corresponding to the identification information; the multicast control information is used to enable the UE to acquire group communication data. Optionally, the multicast control information specifically includes: the UE joins the MBMS bearer information of the group.

Optionally, the processor 161 is further configured to: sending a request message to a serving MME of the UE through the data transmission interface 160, the request message being a request message for requesting acquisition of multicast control information; and receives a serving MME indication of the UE through the data transfer interface 160 to the serving eNB or of the UE

And the MCE acquires and returns the multicast control information.

Optionally, the processor 161 sends the multicast control information to the UE through a serving node device of the UE, and specifically includes:

processor 161 sends an indication message to the serving MME of the UE through the data transmission interface, where the indication message is used to instruct the serving MME of the UE to trigger the serving eNB of the UE to send multicast control information to the UE.

Optionally, the processor 161 is further configured to: sending a request message to a serving MME of the UE through a data transmission interface 160, wherein the request message is used for requesting to acquire the MBSFN area ID of a cell where the UE is located, and receiving the MBSFN area ID acquired and returned by the serving MME from the MCE of the UE through the data transmission interface;

processor 161, configured to send, to the UE, indication information including identification information indicating an MBMS bearer, where the indication information is used to indicate the UE to acquire multicast control information corresponding to the identification information, and specifically:

processor 161 sends an MBSFN area ID to the UE through the data transmission interface, the MBSFN area ID being used for the UE to request acquisition of multicast control information from the serving eNB.

Optionally, the processor 161 is further configured to: determining the UE identification of the UE through the request message; the processor 161 sends multicast control information to the UE through the data transmission interface 160 or through a serving node device of the UE according to the request message, or sends indication information containing identification information indicating MBMS bearer to the UE, where the indication information is used to indicate the UE to acquire multicast control information corresponding to the identification information, and the specific is:

the processor sends multicast control information to the UE through a data transmission interface or through service node equipment of the UE according to the UE identification and the request message, or the GCSE AS sends indication information containing identification information indicating MBMS bearing to the UE, wherein the indication information is used for indicating the UE to acquire multicast control information corresponding to the identification information.

Optionally, the processor 161 is further configured to: determining the TMGI or MBMS session ID of the UE from the request message;

processor 161 sends the TMGI or MBMS session ID to the UE through data transmission interface 160, where the TMGI or MBMS session ID is used for the UE to request the serving eNB of the UE to acquire multicast control information. In an eighth aspect, based on the same inventive concept, an embodiment of the present application provides an eNB, please refer to fig. 17, which specifically includes:

a data transmission interface 170 for receiving a control message;

the processor 171 is connected to the data transmission interface 170, and configured to send, based on the control message, multicast control information to the UE or send multicast control information to the GCSE AS after the data transmission interface 170 receives the control information, where the GCSE AS is configured to forward the multicast control information to the UE, and the multicast control information is configured to enable the UE to obtain group communication data.

Optionally, the data transmission interface 170 is specifically configured to: and receiving an identification information request message which is sent by the UE and contains an indication MBMS bearer, wherein the request message is used for requesting to acquire multicast control information corresponding to the identification information.

Optionally, the identification information specifically includes: MBSFN area ID of the cell where the UE is located, TMGI of the UE or MBMS session ID of the cell where the UE is located;

the processor 171 sends multicast control information to the UE through the data transmission interface 170 based on the control message, specifically: the processor 171 transmits multicast control information corresponding to the MBSFN area ID or the TMGI or MBMS session ID to the UE through the data transmission interface.

Optionally, the data transmission interface 170 is specifically configured to: receiving indication information sent by a serving MME of the UE, wherein the indication information is sent to the serving MME by a GCSE AS and is used for indicating a data transmission interface to send multicast control information to the UE; or

The data transmission interface 170 is specifically configured to: receiving indication information sent by a serving MME of the UE, the indication information being sent by the GCSE AS to the serving MME and being used to instruct the data transport interface to send multicast control information to the GCSE AS.

In a ninth aspect, based on the same inventive concept, an embodiment of the present application provides a UE, please refer to fig. 18, which specifically includes:

a processor 180 and a data transmission interface 181;

a processor 180 for transmitting a request message requesting for grouping to the GCSE AS through the data transmission interface 181 after determining request information requesting for grouping;

a data transmission interface 181 for: receiving indication information which is returned by the GCSE AS according to the request message and contains identification information indicating MBMS bearing;

processor 180, further configured to: acquiring, based on the indication information, multicast control information corresponding to the identification information from the service e B of the UE through the data transmission interface 181, the multicast control information being for causing the UE to acquire group communication data;

the data transmission interface 181 is further configured to: and receiving the multicast control information.

Optionally, the data transmission interface 181 receives the inclusion indication returned by the GCSE AS according to the request message

The indication information of the identification information carried by the MBMS specifically includes:

the data transmission interface 181 receives the MBSFN area ID of the cell in which the UE is located from the GCSE AS,

the MBSFN area ID is obtained by sending an indication message to a serving MME of the UE by the GCSE AS, wherein the indication message is used for indicating the serving MME to obtain the MBSFN area ID from the MCE of the UE and return the MBSFN area ID to the GCSE AS;

based on the indication information, the processor 180 obtains, from the serving eNB of the UE through the data transmission interface 181, multicast control information corresponding to the identification information, specifically:

the processor 180 requests the serving eNB of the UE to acquire multicast control information corresponding to the MBSFN area ID through the data transmission interface 181.

Optionally, the data transmission interface 181 receives indication information including identification information indicating an MBMS bearer, which is returned by the GCSE AS according to the request message, specifically:

the data transmission interface 181 receives the TMGI or MBMS session ID of the UE from the GCSE AS, and the TMGI or MBMS session ID is obtained from a request message requesting for grouping sent by the UE from the GCSE AS;

the processor 181 requests acquisition of the TMGI or TMGI to the serving eNB of the UE through the data transmission interface

Multicast control information corresponding to the MBMS session ID. One or more technical solutions provided by the present application have at least the following technical effects or advantages: in the embodiment of the present application, after receiving a request message requesting for entering a group sent by a UE, the GCSE AS itself sends multicast control information to the UE or through a serving node device of the UE, or the GCSE AS instructs the UE to acquire the multicast control information, that is, after the UE enters the group, the GCSE AS can directly acquire the multicast control information, and further directly acquire group communication data through the multicast control information, without waiting for the multicast control information to be periodically sent, and then acquire the group communication data, thereby achieving the technical effect of reducing the time delay of data transmission.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Thus, the present application may take the form of a fully hardware embodiment, a fully software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

Claims to follow

1. A method of transmitting a message, comprising:

an application server of group communication service receives a request message for requesting group entry sent by a terminal; the application server of the group communication service sends multicast control information to the terminal through the application server or through service node equipment of the terminal according to the request message, or the application server of the group communication service sends indication information containing identification information indicating Multimedia Broadcast Multicast Service (MBMS) bearing to the terminal, wherein the indication information is used for indicating the terminal to acquire the multicast control information corresponding to the identification information; the multicast control information is used for enabling the terminal to acquire group communication data.

2. The method according to claim 1, wherein the multicast control information is specifically: and the terminal joins the MBMS bearing information of the group.

3. The method according to claim 1 or 2, wherein before said transmitting multicast control information to said terminal by itself, said method further comprises:

the application server of the group communication service sends a request message to a service mobile management entity of the terminal, wherein the request message is used for requesting to acquire the request message of the multicast control information;

and the application server of the group communication service receives the multicast control information which is obtained and returned by a service mobile management entity of the terminal and indicates a service base station or a multi-cell coordination entity of the terminal.

4. The method according to claim 1 or 2, wherein the sending multicast control information to the terminal by the serving node device of the terminal specifically includes:

and the application server of the group communication service sends an indication message to a service mobile management entity of the terminal, wherein the indication message is used for indicating the service mobile management entity of the terminal to trigger a service base station of the terminal to send the multicast control information to the terminal.

5. The method of claim 1 or 2, wherein before the application server of the group communication service sends indication information containing identification information indicating an MBMS bearer to a terminal, the indication information being used to instruct the terminal to acquire the multicast control information corresponding to the identification information, the method further comprises:

the application server of the group communication service sends a request message to a service mobile management entity of the terminal, wherein the request message is used for requesting to acquire a multimedia multicast area identifier of a cell where the terminal is located;

the application server of the group communication service receives the multimedia multicast area identifier which is obtained and returned by the service mobile management entity from the multi-cell coordination entity of the terminal;

the application server of the group communication service sends indication information containing identification information indicating MBMS bearer to a terminal, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, and specifically includes:

and the application server of the group communication service sends indication information containing a multimedia multicast area identifier to the terminal, wherein the indication information is used for enabling the terminal to request to acquire the multicast control information corresponding to the multimedia multicast area identifier from the service base station.

6. The method of claim 1, wherein before the application server of the group communication service sends multicast control information to the terminal according to the request message, through itself or through a service node device of the terminal, or before the application server of the group communication service sends indication information containing identification information indicating MBMS bearers to the terminal, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information, the method further comprises:

the application server of the group communication service determines the terminal identification of the terminal through the request message;

the application server of the group communication service sends multicast control information to the terminal through the application server itself or through the service node device of the terminal according to the request message, or the application server of the group communication service sends indication information containing identification information indicating MBMS bearer to the terminal, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information, and specifically includes:

and the application server of the group communication service sends multicast control information to the terminal through the application server of the group communication service or through service node equipment of the terminal according to the terminal identification, or the application server of the group communication service sends indication information containing identification information indicating MBMS bearing to the terminal, wherein the indication information is used for indicating the terminal to acquire the multicast control information corresponding to the identification information.

7. The method of claim 1, wherein before the application server of the group communication service transmits indication information including identification information indicating an MBMS bearer to a terminal, the indication information being used to instruct the terminal to acquire the multicast control information corresponding to the identification information, the method further comprises:

the application server of the group communication service determines a temporary mobile group identification or a multimedia broadcast multicast session identification of the terminal from the request message;

the application server of the group communication service sends indication information containing identification information indicating MBMS bearer to a terminal, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, and specifically includes:

the application server of the group communication service sends the request information containing the temporary mobile group identification code or the multimedia broadcast multicast session identification to the terminal, and the indication information is used for indicating the terminal to request a service base station of the terminal to acquire the multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identification.

8. A method for transmitting a message, comprising:

the base station receives the control message;

and the base station sends multicast control information to the terminal or sends the multicast control information to an application server of group communication service based on the control message, wherein the application server of the group communication service is used for forwarding the multicast control information to the terminal, and the multicast control information is used for enabling the terminal to acquire group communication data.

9. The method according to claim 8, wherein the multicast control information is specifically: and the terminal joins the multimedia broadcast multicast service MBMS bearing information of the group.

10. The method according to claim 8 or 9, wherein the base station receives a control message, specifically: and the base station receives an identification information request message which is sent by the terminal and contains an indication MBMS bearer, wherein the request message is used for requesting to acquire the multicast control information corresponding to the identification information.

11. The method according to claim 10, wherein the identification information is specifically: a multimedia multicast area identifier of a cell in which the terminal is located, or a temporary mobile group identifier of the terminal, or a multimedia broadcast multicast session identifier of the cell in which the terminal is located; the base station sends multicast control information to the terminal based on the control message, specifically: and the base station sends multicast control information corresponding to the multimedia multicast area identifier, the temporary mobile group identifier or the multimedia broadcast multicast session identifier to the terminal.

12. The method according to claim 8 or 9, wherein the base station receives a control message, specifically: the base station receives indication information sent by a serving mobility management entity of the terminal, wherein the indication information is sent to the serving mobility management entity by an application server of a group communication service and is used for indicating the base station to send the multicast control information to the terminal; or

The base station receives a control message, specifically: the base station receives indication information sent by a serving mobility management entity of the terminal, the indication information being sent to the serving mobility management entity by an application server of a group communication service and being used for instructing the base station to send the multicast control information to the application server of the group communication service.

13. A method for retrieving a message, comprising:

the terminal sends a request message for requesting group entry to an application server of the group communication service;

the terminal receives multicast control information, and the multicast control information is sent to the terminal by an application server of the group communication service through the terminal or service node equipment of the terminal according to the request message; or, the terminal receives indication information containing identification information indicating Multimedia Broadcast Multicast Service (MBMS) bearing sent by an application server of the group communication service, and acquires the multicast control information corresponding to the identification information according to the indication information; the multicast control information is used for enabling the terminal to acquire group communication data.

14. The method of claim 13, wherein the multicast control information is embodied as: and the terminal joins the MBMS bearing information of the group.

15. The method according to claim 13 or 14, wherein the terminal receives multicast control information, and the multicast control information is sent to the terminal by itself according to the request message by an application server of the group communication service, specifically:

the terminal receives the multicast control message sent by the application server of the group communication service, the multicast control message is obtained by the application server of the group communication service sending an indication message to a service mobile management entity of the terminal, and the indication message is used for the service mobile management entity to send to a multi-cell coordination entity of the service base station or the terminal and indicating the service base station or the multi-cell coordination entity to send the multicast control message to the application server of the group communication service.

16. The method according to claim 13 or 14, wherein the terminal receives multicast control information, and the multicast control information is sent to the terminal by an application server of the group communication service through a service node device of the terminal according to the request message, specifically:

the terminal receives the multicast control information sent by the service base station of the terminal, the multicast control information is obtained by sending an indication message to a service mobile management entity of the terminal by an application server of the group communication service, and the indication message is used for being sent to the service base station by the service mobile management entity and indicating the service base station to send the multicast control information to the terminal.

17. The method as claimed in claim 13 or 14, wherein the receiving, by the terminal, indication information including identification information indicating an MBMS bearer sent by an application server of the group communication service, and acquiring the multicast control information corresponding to the identification information according to the indication information specifically includes: the terminal receives a multimedia multicast area identifier of a cell where the terminal is located from an application server of the group communication service, the multimedia multicast area identifier is obtained by sending an indication message to a service mobile management entity of the terminal by the application server of the group communication service, and the indication message is used for indicating the service mobile management entity to obtain the multimedia multicast area identifier from a multi-cell coordination entity of the terminal and return the multimedia multicast area identifier to application service crying of the group communication service.

The terminal sends the multimedia multicast area identification to a service base station of the terminal; and the terminal receives the multicast control information which is acquired and returned by the service base station according to the multimedia multicast area identifier.

18. The method according to claim 13 or 14, wherein the terminal receives indication information containing identification information indicating MBMS bearer sent by an application server of the group communication service, and acquires the multicast control information corresponding to the identification information according to the indication information, and specifically comprises the terminal receiving a temporary mobile group identity or a multimedia broadcast multicast session identity of the terminal from the application server of the group communication service, the temporary mobile group identity or the multimedia broadcast multicast session identity being acquired by the application server of the group communication service from a request message requesting for group entry sent by the terminal;

the terminal requests a service base station of the terminal to acquire multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identification;

and the terminal receives multicast control information which is sent by a service base station of the terminal and corresponds to the temporary mobile group identification code or the multimedia broadcast multicast session identification.

19. An apparatus for transmitting a message, comprising:

the receiving module is used for receiving a request message for requesting group entry, which is sent by a terminal;

a sending module, connected to the receiving module, configured to send, according to the odd request message, multicast control information to the terminal through the receiving module itself or through a service node device of the terminal after the receiving module receives the request message, or send, to the terminal, indication information including identification information indicating a multimedia broadcast multicast service MBMS bearer, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information; the multicast control information is used for enabling the terminal to acquire group communication data.

20. The apparatus of claim 19, wherein the multicast control information is MBMS bearer information for the terminal to join a group.

21. The apparatus according to claim 19 or 20, wherein the sending module is specifically configured to: sending a request message to a service mobile management entity of the terminal, wherein the request message is used for requesting to acquire the request message of the multicast control information;

the receiving module is further configured to: after the sending module sends the request message, receiving the multicast control information which is obtained and returned by a service mobile management entity of the terminal to indicate a service base station or a multi-cell coordination entity of the terminal;

the sending module is further configured to: and sending the multicast control information to the terminal.

22. The apparatus according to claim 19 or 20, wherein the sending module is specifically configured to:

and sending an indication message to a service mobile management entity of the terminal, wherein the indication message is used for indicating the service mobile management entity of the terminal to trigger a service base station of the terminal to send the multicast control information to the terminal.

23. The apparatus of claim 19 or 20, wherein the sending module is further configured to: sending a request message to a service mobile management entity of the terminal, wherein the request message is used for requesting to acquire a multimedia multicast area identifier of a cell where the terminal is located;

the receiving module is further configured to: after the receiving module sends the request message, receiving the multimedia multicast area identifier which is obtained and returned by the service mobile management entity from a multi-cell coordination entity of the terminal;

the sending module is further configured to: and sending indication information containing a multimedia multicast area identifier to the terminal, wherein the indication information is used for enabling the terminal to request to acquire the multicast control information corresponding to the multimedia multicast area identifier from the service base station.

24. The apparatus of claim 19, further comprising: a determining module, connected to the sending module, for determining the terminal identifier of the terminal through the request message;

the sending module is further configured to: after the determining module determines the terminal identifier, according to the terminal identifier, multicast control information is sent to the terminal through the terminal or through a service node device of the terminal, or indication information containing identification information indicating MBMS bearing is sent to the terminal, wherein the indication information is used for indicating the terminal to acquire the multicast control information corresponding to the identification information.

25. The apparatus of claim 19, further comprising: a determining module, connected to the sending module, configured to determine a temporary mobile group identifier or a multimedia broadcast multicast session identifier of the terminal from the request message;

the sending module is further configured to: after the determining module determines the temporary mobile group identifier or the multimedia broadcast multicast session identifier, the request information including the temporary mobile group identifier or the multimedia broadcast multicast session identifier is sent to the terminal, and the indication information is used for indicating the terminal to request a serving base station of the terminal to acquire the multicast control information corresponding to the temporary mobile group identifier or the multimedia broadcast multicast session identifier.

26. A message transmission apparatus, comprising:

a receiving module for receiving a control message; a sending module, connected to the receiving module, configured to send, based on the control message, multicast control information to the terminal or send the multicast control information to an application server of a group communication service after the receiving module receives the control message, where the application server of the group communication service is configured to forward the multicast control information to the terminal, and the multicast control information is used to enable the terminal to obtain group communication data.

27. The apparatus of claim 26, wherein the multicast control information is MBMS bearer information for the MBMS services for which the terminal joined the group.

28. The apparatus according to claim 26 or 27, wherein the receiving module is specifically configured to: and receiving an identification information request message which is sent by the terminal and contains an indication MBMS bearer, wherein the request message is used for requesting to acquire the multicast control information corresponding to the identification information.

29. The apparatus according to claim 28, wherein the identification information is specifically: a multimedia multicast area identifier of a cell in which the terminal is located, or a temporary mobile group identifier of the terminal, or a multimedia broadcast multicast session identifier of the cell in which the terminal is located;

the sending module is specifically configured to: and sending multicast control information corresponding to the multimedia multicast area identifier or the temporary mobile group identifier or the multimedia broadcast multicast session identifier to the terminal.

30. The apparatus according to claim 26 or 27, wherein the receiving module is specifically configured to: receiving indication information transmitted by a serving mobility management entity of the terminal, the indication information being transmitted to the serving mobility management entity by an application server of a group communication service and being used to instruct the transmission module to transmit the multicast control information to the terminal; or

The receiving module is specifically configured to: receiving indication information sent by a serving mobility management entity of the terminal, the indication information being sent to the serving mobility management entity by an application server of a group communication service and being used for instructing the sending module to send the multicast control information to the application server of the group communication service.

31. An apparatus for retrieving a message, comprising:

a sending module, configured to send a request message requesting for group entry to an application server of a group communication service; a receiving module, connected to the sending module, configured to receive multicast control information after the sending module sends the request message, where the multicast control information is sent to the terminal by an application server of the group communication service according to the request message through the application server or a service node device of the terminal; or, the terminal receives indication information containing identification information indicating MBMS bearer sent by an application server of the group communication service, and acquires the multicast control information corresponding to the identification information according to the indication information; the multicast control information is used for enabling the terminal to acquire group communication data.

32. The apparatus of claim 31, wherein the multicast control information is embodied as: and the terminal joins the multimedia broadcast multicast service MBMS bearing information of the group.

33. The apparatus according to claim 31 or 32, wherein the receiving module is specifically configured to:

receiving the multicast control message sent by the application server of the group communication service, wherein the multicast control message is obtained by sending an indication message to a service mobility management entity of the terminal through the application server of the group communication service, and the indication message is used for being sent to the multi-cell coordination entity of the service base station or the terminal by the service mobility management entity and indicating the service base station or the multi-cell coordination entity to send the multicast control message to the application server of the group communication service.

34. The apparatus according to claim 31 or 32, wherein the receiving module is specifically configured to:

receiving the multicast control information sent by the serving base station of the terminal, wherein the multicast control information is obtained by sending an indication message to a serving mobility management entity of the terminal by an application server of the group communication service, and the indication message is used for being sent to the serving base station by the serving mobility management entity and indicating the serving base station to send the multicast control information to the terminal.

35. The apparatus of claim 31 or 32, wherein the receiving module is further configured to: receiving a multimedia multicast area identifier of a cell where the terminal is located from an application server of the group communication service, wherein the multimedia multicast area identifier is obtained by sending an indication message to a service mobility management entity of the terminal by the application server of the group communication service, and the indication message is used for indicating the service mobility management entity to obtain the multimedia multicast area identifier from a multi-cell coordination entity of the terminal and returning the multimedia multicast area identifier to the application server of the group communication service;

the sending module is further configured to: after the receiving module receives the multimedia multicast area identifier, sending the multimedia multicast area identifier to a service base station of the terminal; the receiving module is further configured to: and after the sending module sends the multimedia multicast area identifier, receiving the multicast control information which is obtained and returned by the service base station according to the multimedia multicast area identifier.

36. The apparatus of claim 31 or 32, wherein the receiving module is further configured to: receiving a temporary mobile group identity or a multimedia broadcast multicast session identifier of the terminal from an application server of the group communication service, wherein the temporary mobile group identity or the multimedia broadcast multicast session identifier is obtained by the application server of the group communication service from a request message requesting for group entry sent by the terminal;

the sending module is further configured to: after the receiving module receives the temporary mobile group identification code or the multimedia broadcast multicast session identifier, requesting a service base station of the terminal to acquire multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identifier;

the receiving module is further configured to: after the sending module sends the temporary mobile group identification code or the multimedia broadcast multicast session identifier, receiving multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identifier sent by a serving base station of the terminal.

37. An application server for group communication services, comprising:

the data transmission interface is used for receiving a request message for requesting grouping sent by a terminal;

a processor, connected to the data transmission interface, configured to send, according to the request message, multicast control information to the terminal through the data transmission interface or through a serving node device of the terminal, or send, to the terminal, indication information including identification information indicating a multimedia broadcast multicast service MBMS bearer, where the indication information is used to indicate the terminal to obtain the multicast control information corresponding to the identification information; the multicast control information is used for enabling the terminal to acquire group communication data.

38. The application server of group communication service according to claim 37, wherein the multicast control information is specifically: and the terminal joins the MBMS bearing information of the group.

39. An application server of a group communication service according to claim 37 or 38, wherein the processor is further configured to: sending a request message to a service mobile management entity of the terminal through the data transmission interface, wherein the request message is used for requesting to acquire the request message of the multicast control information, and receiving the multicast control information which is acquired and returned by a service base station or a multi-cell coordination entity of the terminal and indicated by the service mobile management entity of the terminal through the data transmission interface;

40. the application server of group communication service according to claim 37 or 38, wherein the processor, through the service node device of the terminal, sends multicast control information to the terminal, specifically comprising:

and the processor sends an indication message to a service mobile management entity of the terminal through the data transmission interface, wherein the indication message is used for indicating the service mobile management entity of the terminal to trigger a service base station of the terminal to send the multicast control information to the terminal.

41. An application server of a group communication service according to claim 37 or 38, wherein the processor is further configured to: sending a request message to a service mobile management entity of the terminal through the data transmission interface, wherein the request message is used for requesting to acquire a multimedia multicast area identifier of a cell where the terminal is located, and receiving the multimedia multicast area identifier acquired and returned by the service mobile management entity from a multi-cell coordination entity of the terminal through the data transmission interface;

the processor sends, to a terminal, indication information including identification information indicating MBMS bearer, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, and specifically:

and the processor sends a multimedia multicast area identifier to the terminal through the data transmission interface, wherein the multimedia multicast area identifier is used for enabling the terminal to request to acquire the multicast control information from the service base station.

42. An application server of a group communication service as defined in claim 37, wherein the processor is further configured to: the processor determines the terminal identification of the terminal through the request message; the processor, according to the request message, sends multicast control information to the terminal through the data transmission interface or through a service node device of the terminal, or sends, to the terminal, indication information including identification information indicating MBMS bearer by the application server of the group communication service, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, and the specific is:

and the processor sends multicast control information to the terminal through the data transmission interface or through service node equipment of the terminal according to the terminal identifier and the request message, or an application server of the group communication service sends indication information containing identification information indicating MBMS bearing to the terminal, wherein the indication information is used for indicating the terminal to acquire the multicast control information corresponding to the identification information.

43. An application server of a group communication service as defined in claim 37, wherein the processor is further configured to:

the processor determines a temporary mobile group identifier or a multimedia broadcast multicast session identifier of the terminal from the request message;

the processor sends, to a terminal, indication information including identification information indicating MBMS bearer, where the indication information is used to indicate the terminal to acquire the multicast control information corresponding to the identification information, and specifically: the processor sends the temporary mobile group identification code or the multimedia broadcast multicast session identifier to the terminal through the data transmission interface, wherein the temporary mobile group identification code or the multimedia broadcast multicast session identifier is used for the terminal to request a service base station of the terminal to acquire the multicast control information.

44. A base station, comprising:

a data transmission interface for receiving a control message;

and the processor is connected to the data transmission interface and is configured to send multicast control information to the terminal or send the multicast control information to an application server of a group communication service based on the control message after the data transmission interface receives the control information, where the application server of the group communication service is configured to forward the multicast control information to the terminal, and the multicast control information is used to enable the terminal to obtain group communication data.

45. The base station of claim 44, wherein the multicast control information is MBMS bearer information for the MBMS services for which the terminal joined the group.

46. The base station according to claim 44 or 45, wherein the data transmission interface is specifically configured to: and receiving an identification information request message which is sent by the terminal and contains an indication MBMS bearer, wherein the request message is used for requesting to acquire the multicast control information corresponding to the identification information.

47. The base station of claim 46, wherein the identification information is specifically: a multimedia multicast area identifier of a cell in which the terminal is located, or a temporary mobile group identifier of the terminal, or a multimedia broadcast multicast session identifier of the cell in which the terminal is located;

the processor sends multicast control information to the terminal through the data transmission interface based on the control message, specifically: and the processor sends multicast control information corresponding to the multimedia multicast area identifier, the temporary mobile group identifier or the multimedia broadcast multicast session identifier to the terminal through the data transmission interface.

48. The base station according to claim 44 or 45, wherein the data transmission interface is specifically configured to: receiving indication information sent by a serving mobility management entity of the terminal, the indication information being sent to the serving mobility management entity by an application server of a group communication service and being used to instruct the data transmission interface to send the multicast control information to the terminal; or

The data transmission interface is specifically configured to: receiving indication information sent by a service mobility management entity of the terminal, the indication information being sent to the service mobility management entity by an application server of a group communication service and being used for instructing the data transmission interface to send the multicast control information to the application server of the group communication service.

49. A terminal, comprising:

a processor and a data transmission interface;

the processor is used for sending a request message requesting for grouping to an application server of the group communication service through the data transmission interface after determining the request information requesting for grouping;

the data transmission interface is configured to: receiving indication information which is returned by the application server of the group communication service according to the request message and contains identification information indicating the Multimedia Broadcast Multicast Service (MBMS) bearing;

the processor is further configured to: acquiring the multicast control information corresponding to the identification information from a service base station of the terminal through the data transmission interface based on the indication information, wherein the multicast control information is used for enabling the terminal to acquire group communication data;

the data transmission interface is further configured to: and receiving the multicast control information.

50. The terminal of claim 49, wherein the multicast control information is embodied as: and the terminal joins the MBMS bearing information of the group. 51. The terminal of claim 49 or 50, wherein the indication information that the application server of the data transmission interface receiving the group communication service returns according to the request message and includes the identification information indicating the MBMS bearer specifically is:

the data transmission interface receives a multimedia multicast area identifier of a cell where the terminal is located from an application server of the group communication service, the multimedia multicast area identifier is obtained by sending an indication message to a service mobile management entity of the terminal by the application server of the group communication service, and the indication message is used for indicating the service mobile management entity to obtain the multimedia multicast area identifier from a multi-cell coordination entity of the terminal and return the multimedia multicast area identifier to the application server of the group communication service;

the processor obtains the multicast control information corresponding to the identification information from a serving base station of the terminal through the data transmission interface based on the indication information, specifically:

and the processor requests the service base station of the terminal to acquire the multicast control information corresponding to the multimedia multicast area identifier through the data transmission interface.

52. The terminal of claim 49 or 50, wherein the indication information that the application server of the data transmission interface receiving the group communication service returns according to the request message and includes the identification information indicating the MBMS bearer specifically is:

the data transmission interface receives a temporary mobile group identification code or a multimedia broadcast multicast session identifier of the terminal from an application server of the group communication service, wherein the temporary mobile group identification code or the multimedia broadcast multicast session identifier is acquired by the application server of the group communication service from a request message which is sent by the terminal and requests to enter a group;

the processor obtains the multicast control information corresponding to the identification information from a serving base station of the terminal through the data transmission interface based on the indication information, specifically:

and the processor requests the service base station of the terminal to acquire the multicast control information corresponding to the temporary mobile group identification code or the multimedia broadcast multicast session identification through the data transmission interface.