WO2008148341A1

WO2008148341A1 - Method of setting session role, server and terminal thereof

Info

Publication number: WO2008148341A1
Application number: PCT/CN2008/071119
Authority: WO
Inventors: Aiqin Zhang; Lei Zhu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-06-01
Filing date: 2008-05-28
Publication date: 2008-12-11

Abstract

A method of setting session role is disclosed. It includes: a server sends session role setting request and session invitation to the terminal of object user, according to an identifier of object user in session role setting request information carried in session request; the server receives the accepted information that the session role is set successfully returned from the terminal of object user; after the terminal of object user selects to add session and selects to accept the session role in the session role setting request information, the accepted information that the session role is set successfully is generated. This solution can set session role in the building process of pre-arranged PoC group session and Ad-hoc PoC Session. Furthermore, another technical solution is also disclosed that before building pre-arranged PoC group session, and if object user that is hand over role in the process of pre-arranged PoC group session is not the current session number, and in the process of Ad-hoc PoC Session, hands over /designate session role, which makes that in all sorts of conditions, then can hand over and/or designate session role.

Description

Method, server and terminal for setting session role

The present invention relates to multi-party communication technologies, and more particularly to a method, server and terminal for setting a session role. Background technique

In the development of network technology, multi-party communication has gradually become a universally applied service. In a multi-party communication system, a control point is required to uniformly manage multi-party communication to ensure consistency and real-time control of communication users in multi-party communication. Push to Talk over Cellular (hereinafter referred to as PoC) system is a commonly used multi-party communication system. As shown in FIG. 1, it is a schematic diagram of logical functions of a prior art PoC system. The PoC system includes a PoC client (Client), a PoC server (Server), a PoC function executive (enabler), a presence server (Presence Server), and an Extensible Markup Language (hereinafter referred to as XML) file management server ( XML Document Management Server, the following is called: XDMS) and the Provisioning Server. The PoC client, the PoC server, and the PoC function execution entity are logical entities, and each PoC function execution body only interacts with the PoC server, and the presentation server, the XDMS, and the service providing server are external entities. The PoC function executive may be a Charging enabler for PoC charging, a Security enabler, a Discovery/Registry enabler, or an authentication function executive. ( Authertication/Authorisation enabler ) and so on. The presence server is configured to receive and store the presentation information published by all Poc clients and the PoC server, for example: whether it is online, do not disturb, etc., and present it according to actual needs, for example, subscription requests of other entities. XDMS is used to manage PoC group and end user information, for example: can add, delete or change group information, and authorize and control groups, etc. XDMS interacts with PoC client and PoC server about user and group information. . The PoC server performs the main functions of PoC and is divided into control PoC functions and parameters. With the PoC function, the PoC client operates through the PoC server.

The existing PoC technology is based on PoC half-duplex, that is, at the same time, for the same media type, only one session participating user can be in the media sending state, and other session participating users can only be in the state of receiving media. Only users who have the right to send media can send the corresponding media. That is, if the media transmission right requested by the session participant is not idle, and the PoC system supports the queue state, the media transmission request of the session participant user is arranged in the queue in chronological order, waiting for the media transmission right to be granted. User permissions and session features vary from session to session. Users of special roles, such as: Session host, Floor Chair, Moderator, Dispatcher, etc., can apply for media transmission rights for other session participants. To view the queue order status of media transmission requests of other users in the queue, the queue order in the Poc system can be adjusted. In a scheduling session in which the dispatcher participates, the media stream sent from the session dispatcher is different from the sending mode of the media stream sent from the ordinary user, and the media stream sent from the session dispatcher is distributed to all ordinary session participating users ( Fleet member ) , and the media stream sent from the session participants can only be passed to the session dispatcher separately. Therefore, there are inevitably settings for session roles in the PoC system, including: session role handover and session role specification.

The session role handover refers to the application server of the multimedia session, a user itself or other users handing over the session role to another user. After the session role is handed over successfully, the other user will assume the transferred session role in the multimedia session.

The session role designation refers to the application server of a multimedia session or an authorized user assigning a session role to another user. After the session role is successfully specified, the other user will assume the designated session role in the multimedia session.

As shown in FIG. 2, it is a flowchart of a method for handover of a session role in a prior art PoC system, which takes the role of an administrator as an example, and includes the following steps:

Steps 101 to 102: During the scheduling session, the current session dispatcher A initiates a ten-party/Internet ten-party core network (Session Initiation Protocol/Internet) through a session in the local network. Protocol Core, the following is called: SIP/IP Core. A sends a dispatch role handover request (REFER/INVITE) to the participating server A. The dispatch role handover request includes the following information: PoC session identifier; target user for scheduling role handover The PoC address of B; the dispatch role identifier requesting the handover, here the session dispatcher ID.

Steps 103-105, the participating server A queries the routing information of the control network according to the PoC session identifier, and routes the scheduling role handover request to the control server through the SIP/IP core network A and the SIP/IP core network C of the control network.

Step 106: The control server C receives the scheduling role handover request, acquires the group information of the current group session from the XDMS according to the PoC session identifier, and authenticates the current session dispatcher A according to the group information, and determines the current session dispatcher A. If the current session dispatcher A does not have the dispatcher role or does not have the dispatcher role transfer authority, perform steps 107~111; if the judgment result is yes, perform the steps. 112.

In steps 107~111, the control server C returns a reject message (REJECTED) rejecting the dispatch role to the current session dispatcher A.

Step 112: The control server C authenticates the target user B to which the scheduling role is handed over, and determines whether the target user B has scheduling capability. If not, steps 107-111 are performed; if yes, step 113 is performed.

If the number of PoC addresses of the target users carried in the scheduling role handover request is multiple, the control server C may select a suitable one of the target users authenticated by the step 112 according to the preset user's load balancing policy. The target user B of the scheduling role is handed over.

In steps 113 to 117, the control server C sends a scheduling role handover request to the target user B to which the scheduling role is handed over.

Steps 118~126, after accepting the dispatch role handover request, the target user B returns an accept response message (ACCEPTED) to the current session dispatcher A.

Steps 127-131, after receiving the response message from the target user B, the control server C sends a notification message (NOTIFICATION) to the current session dispatcher A that the handover role is successfully handed over. Steps 132-136, after receiving the notification message that the scheduling role handover success sent by the control server C is received, the current session dispatcher A returns an "OK" response message to the control server C.

The inventor found in the process of implementing the present invention that the prior art role handover method shown in FIG. 2 is only applicable to the role handover in the process of pre-arranged PoC Group Session, and the goal of the role handover. The user must be a member of the current session, and during the establishment of the predefined group session and the temporary session (Ad-hoc PoC Session), during the temporary session, and in the pre-defined group session In the case of defining a group session and a temporary session, when the target user handed over by the role is not a member of the current session, how to set the session role, namely: how to hand over or specify the session role, has not yet given a corresponding implementation. Therefore, currently, before the pre-defined group session is established, during the pre-defined group session and temporary session establishment process, during the temporary session, and during the pre-defined group session and the temporary session, the role is handed over. If the target user is not a member of the current session, the session role cannot be handed over or specified. Summary of the invention

The technical problem to be solved by the embodiments of the present invention is to implement a target user before a pre-defined group session is established, or during a pre-defined group session and a temporary session establishment process, or during a pre-defined group session. In the case of a member of the current session, the handover/designation of the session role is performed.

According to a first aspect of the embodiments of the present invention, a first method for setting a session role is provided, including:

According to the session role setting request, the session role identifier in the group information is set correspondingly.

According to a second aspect of the embodiments of the present invention, a first server is provided, including: a first receiving module, configured to receive, by the terminal, a session role setting request for setting a session role in the group;

a setting module, configured to perform corresponding setting on the session role identifier in the group information according to the session role setting request;

The first sending module is configured to return, to the terminal, a response message that the session role is successfully set or a setting result message that fails to be set according to the setting result of the session role identifier.

The embodiment of the present invention determines the multimedia session role according to the related information in the predefined group information, and implements the related XML file on the XDMS before the multimedia session is established. The setting of the multimedia session role, including the handover/designation of the session role.

According to a third aspect of the embodiments of the present invention, a second method for setting a session role includes:

The server sends the session role setting request and the session invitation to the target user terminal according to the target user identifier in the session role setting request information carried in the session request.

Receiving, by the server, a response message that the session role setting succeeded by the target user terminal is successful; the response message of the session role setting success is selected by the target user terminal to select to join the session and select to accept the session role setting request message. Generated after the session role.

According to a fourth aspect of the embodiments of the present invention, a terminal provided includes:

a first generating module, configured to generate a session request that includes the session role setting request information, and a second sending module, configured to send, to the server, a session request that includes the session role setting request information;

The second receiving module is configured to receive a response message and a notification message that the session role set by the server is successfully set, or set a failure response message.

According to a fifth aspect of the embodiments of the present invention, a second server is provided, including: a third receiving module, configured to receive a session request that is sent by a terminal and includes session role setting request information; An identification module, configured to acquire, from the session request, a target user identifier in the session role setting request information;

And an indication module, configured to generate a session invitation according to the session request that includes the session role setting request information;

And a third sending module, configured to send a session role setting request and a session invitation to the target user terminal, and return a response message and a notification message for successfully setting the session role to the terminal, or set a failure response message.

According to a sixth aspect of the embodiments of the present invention, a third server is provided, including: a first generating module, configured to generate a session request that includes the session role setting request information; and a fourth sending module, configured to a session request that is generated by the first generation module and includes the session role setting request information, and sends the session role setting request and the session invitation to the target user terminal;

And a fourth receiving module, configured to receive an answer message and a notification message that the target user terminal returns a session role setting success, or set a failure response message.

In the process of establishing a pre-defined group session and a temporary multimedia session, the server or the terminal writes a session role setting request to the session request message, and the server implements the session role according to the session role setting request carried in the session request. Settings, handing over and/or specifying session roles.

According to a seventh aspect of the embodiments of the present invention, a third method for setting a session role is provided, including:

The server receives the session role setting request sent by the session initiator terminal, and obtains the target user identifier from the session role setting request;

And if the target user identified by the target user identifier is not in the session, the server sends the session role setting request and the session invitation to the target user terminal.

According to an eighth aspect of the present invention, a fourth server is provided, including: a fifth receiving module, configured to receive a session role setting request sent by a terminal, from the session angle Get the target user ID in the color setting request;

a third authentication module, configured to identify, according to the session role setting request, the session type and whether the target user joins the session;

a second generating module, configured to: when the target user does not join the session, generate a session invitation; the fifth sending module is configured to send the session role setting request and the session invitation generated by the second generating module to the target user terminal And returning a response message and a notification message for successfully setting the session role to the terminal, or setting a failure response message.

In the process of the pre-defined group session and the temporary session, when the target user set by the session role is not a multimedia session member, the embodiment of the present invention invites the target user to join the current session, and after the target user joins the current session, the user may select to receive. Perform a transition and/or designation of the session role by performing a session role handover and/or a specified technical solution.

The technical solutions of the embodiments of the present invention are further described in detail below with reference to the accompanying drawings and embodiments. DRAWINGS

1 is a schematic diagram of logical functions of a prior art PoC system;

2 is a flowchart of a method for handover of a session role in a prior art PoC system;

3 is a flow chart of an embodiment of a method for setting a session role before a group session is established according to the present invention;

4 is a flowchart of an embodiment of a method for setting a session role by a session initiator in a group session or a temporary session establishment according to the present invention;

5 is a flowchart of another embodiment of a method for setting a session role by a session initiator in a group session or a temporary session establishment according to the present invention;

6 is a flowchart of an embodiment of a method for setting a session role by a control server when a group session or a temporary session is established according to the present invention;

FIG. 7 is a target of setting a session role during a group session or a temporary session according to the present invention; A flowchart of an embodiment of a method for setting a session role when the user is not a session member;

8 is a flowchart of another embodiment of a method for setting a session role when a target user set by a session role is not a session member during a group session or a temporary session;

FIG. 9 is a flowchart of an embodiment of a method for setting a session role by a session member when a target user set by a session role is a participating user in a session during a temporary session;

10 is a schematic structural diagram of an embodiment of a server according to the present invention;

11 is a schematic structural diagram of a terminal embodiment of the present invention;

12 is a schematic structural diagram of another embodiment of a server according to the present invention;

13 is a schematic structural diagram of still another embodiment of a server according to the present invention;

FIG. 14 is a schematic structural diagram of still another embodiment of a server according to the present invention. detailed description

Embodiments of the present invention provide role handover before a predefined group session is established, or during a predefined group session and temporary session establishment process, or during a temporary session, or during a predefined group session. If the target user is not a member of the current session, the session role is handed over or specified. This allows the session role to be handed over or specified in each of the above cases.

For multimedia sessions conducted within a predefined group, the multimedia session role can be determined according to relevant information in the predefined group information, such as: direct role assignment or role capability related information, which can be modified by modifying the XDMS. An XML file to set the session role, namely: handing over or specifying a session role. Therefore, the multimedia session role can be set by modifying and defining the XML file of the group information before the multimedia session is established, thereby implementing the setting of the dialogue role, including: handover and/or designation.

As shown in FIG. 3, it is a flowchart of an embodiment of a method for setting a session role before a group session is established, which includes the following steps:

Step 201: The terminal sends a predefined group information to the proxy (Proxy) on the XDMS. The request (XCAP (HTTP) / GET ) requests to obtain group information related to the capability of the session role or the session role from the XDMS. The proxy is a secure entry and external interface of the XDMS, which can authenticate the terminal.

Step 202: The proxy forwards the predefined group information acquisition request to the XDMS.

Steps 203~204, the XDMS returns the group information to the terminal through the proxy.

Through steps 201-204, the terminal can query the corresponding group information.

Steps 205-206, after the terminal knows the session role information of the group user according to the group information, the terminal initiates a session role setting request (XCAP (HTTP) PUT/DELETE) to the XDMS, and requests the XDMS to identify the session role in the group information. Specify, modify, or hand over, where the session role ID is used to identify the session role that a user is currently holding.

For example, the terminal learns that the session role is a session dispatcher role from the group information. In step 207, the XDMS authenticates the target user set by the session role setting request originating terminal user and the session role, and if the authentication is passed, the execution is performed. Step 210; Otherwise, steps 208-209 are performed.

Specifically, the XDMS may query the session role setting request originating terminal from the XDMS itself or another application server or database (for example, a PoC XDMS file management server) that stores the terminal and the user with the capability and authority information that a certain session role should have. The user's session role setting authority, and the capability information of the target user terminal and the authority information of the target user are compared with preset criteria to determine whether the session role setting request originating terminal user has the session role for which the request setting is set. The authority, and the target user terminal set by the session role, have the ability to support the set session role, and whether the target user has the right to receive the set session role.

By authenticating the session role setting authority of the terminal user that initiates the session role setting request, it is ensured that the session role setting request originating terminal user has the right to hand over or specify the session role to prevent malicious setting of the session role; The capability information of the terminal and the authentication of the authority information of the target user ensure that the target user can serve as a handover or designated session role. It is beneficial to ensure the normal progress of subsequent sessions.

Steps 208~209, the XDMS returns a rejection message (REJECTED) of the rejection session role setting to the terminal that initiates the session role setting request by the proxy.

Step 210: The XDMS performs corresponding setting on the session role identifier according to the session role setting request.

The session role identifier is used to identify the session role currently held by a user. After the session role identifier in the group information stored in the XDMS is modified, the session role changes, thereby realizing the setting, modification, and handover of the session role. .

Steps 211 to 212, the XDMS sets a request to the session role through the proxy according to the setting result of the session role identifier, and the response message (OK) for the terminal to return the session role setting success or failure is initiated.

Between the step 201 and the step 202, the proxy may also perform the operation of authenticating the terminal for authenticity. If the authentication is passed, the step 202 is performed; otherwise, the notification message that the group information is not authorized to be returned is returned to the terminal. The steps can further ensure the legitimacy of the session role settings.

Further, if, in step 207, after the authentication is passed, in order to let the target user know the processing of the session character, the XDMS may send a notification message (SIP) indicating the session role setting content to the target user terminal before step 210. Notify ) to present to the target user, and prompt the target user to accept or reject the session role setting. This step is represented by step 207 in FIG. 3; the target user accepts or rejects the session role setting through the terminal, and returns an acceptance or rejection to the XDMS. The reply message of the session role setting (ANSWER), the step is represented by step 207" in FIG. 3; if the reply message received by the XDMS indicates that the user accepts the session role setting, step 210 is performed; if the reply message received by the XDMS indicates the user If the session role setting is rejected, steps 208-209 are performed.

In the foregoing embodiment shown in FIG. 3, the XDMS may not authenticate the target user set by the session role setting requesting end user and the session role, but after receiving the session role setting request initiated by the terminal, directly according to the session role. The setting request performs corresponding setting processing, modification, handover, and the like on the session role identifier, that is, steps 207-209 can be omitted.

When a multimedia session is established, the role can be specified and moved by carrying the role in the session initiation request message. Transfer relevant information to achieve the transfer of the session role.

When a session is established, for a multimedia session based on a predefined group, that is, a group session, and a temporary multimedia session, the session role setting request may be carried in the session initiation request message, that is, a session role handover request or a session role. Specify the request to implement the handover and/or assignment of the session role accordingly, as shown in Figure 4 to Figure 6, for group sessions and temporary sessions. Specifically, the session role setting request may be initiated by the session initiator or may be initiated by the control server (PoC Controlling Server); the target user set by the session role may be the session initiator user itself or other users in the group. That is: The session initiator can assign the multimedia session role to itself.

As shown in FIG. 4, it is a flowchart of an embodiment of a method for setting a session role by a session initiator when a group session or a temporary session is established, which includes the following steps:

Steps 301-302: When the session initiator A initiates a session request by using the session initiation terminal A, the session role setting request information is written into the session request message, and a session request including the session role setting request information is generated, and the SIP in the local network is used. /IP Core A sends a session request (INVITE) carrying the session role setting request to the participating server A. The session role setting request includes the following information: a PoC session identifier; a session role handover or a designated PoC address of the target user B; an identifier of all invitees, including a separate user identifier, for example: a SIP address, for a predefined group The group also includes the group ID (Group ID); the request to hand over or the specified session role ID. Assumption: The invitee user identifies (, D, E, F, the session role as a mitigating role, ie: Session Initiator A requests to hand over or designate its mitigating role as target user B.

After the session role setting request information is written into the session request message, the control server C can implement the handover and/or designation of the session role according to the session role setting request information.

Steps 303~305, the participating server A queries the routing information of the control network according to the PoC session identifier, and carries the session request carrying the session role setting request information through the SIP/IP core network A and the SIP/IP core network C of the control network. Route to the control server (.

Step 306, the control server C receives the session request, and extracts the session role setting request information from the session request, and authenticates the session initiator A and the target user B. If the authentication is passed, the execution is performed. Go to step 312; otherwise, perform steps 307-311.

Specifically, the control server C identifies, according to the identifier of the invitee carried in the session request, whether the session initiated by the session initiator A is a multimedia session of the predefined group or a temporary multimedia session, and if it is a multimedia session of a predefined group, The group session, the authentication performed by the control server C may be: The control server C obtains the group information of the current group session from the XDMS according to the PoC session identifier, and authenticates the session initiator A according to the group information, and determines Whether the session initiator A is currently designated by the group information to be a mitigating role, and whether there is a setting authority for handing over or specifying a mitigating role, if the session initiator A is not currently designated as a mitigating role in the group information, or the session initiator A If there is no permission to transfer or assign a mitigating role, perform steps 307-311; if the authentication of A is passed, the control server C obtains the target user from the XDMS according to the PoC address of the target user B carried in the request role setting request information. B information, and based on the information to authenticate the target user B, judge Whether the target user B as the ability to ease the role, if not having 307 ~ step 311 is performed; if it has, step 312 is performed.

If the session initiated by the session initiator A is a temporary multimedia session, that is, a temporary session, the authentication performed by the control server C may be: The control server C acquires the session initiation from the application server or database storing the session initiator A user information. The permission information of the party A user is compared with the preset standard, and the session initiator A user is authenticated. For example: Determine whether the session initiator A user has the right to initiate a multimedia session. If the session initiator A user does not pass the authority verification, perform steps 307-311. If the session initiator A user passes the rights verification, the control server C further performs the rights authentication and/or the terminal capability authentication on the target user B. For example, the control server C sets the PoC address of the target user B carried in the request information according to the session role setting. Obtaining the capability information of the terminal by performing information interaction with the terminal of the target user B, or acquiring the rights information and/or the terminal information of the terminal user B from the application server or the database storing the terminal information of the target user B, and according to the information Verification of the terminal capability and/or authority of the target user B, for example: determining whether the terminal of the target user B has the ability to play the role of mitigating. If the authentication is passed, step 312 is performed; otherwise, steps 307-311 are performed. In a specific application, only session initiator A or target user B may be authenticated according to actual needs.

In addition, if the session initiated by the session initiator A is a temporary multimedia session, and the session request carries the session role setting information, the control server C may also request the other user or part of the session participation member to agree to the target user B as the session role setting request information. The opinion of the role set in the state and the preset criteria for allowing the target user B to assume the session role determine whether the target user B is allowed to assume the role set in the session role setting request information, thereby realizing the authentication of the target user B. For example: According to the pre-set criteria that allows the target user B to assume the session role, when other temporary session participants agree with the role setting of A, namely: role assignment and role handover, or more than half of the other participants participating in the consultation request When the target user B assumes the role set in the session role setting request information, the control server C can authenticate the target user B accordingly.

By authenticating the session initiator A, it is ensured that the session initiator A has the right to set the session role to prevent malicious setting of the session coloring; and by authenticating the target user B, the target user B can be guaranteed to be served. The set session role helps to ensure the normal progress of subsequent sessions.

Steps 307~311, the control server C returns a reject message (REJECTED) for rejecting the session role setting to the session initiator A terminal.

If the number of PoC addresses of the target user B carried in the session role setting request information is multiple, the control server C may select an appropriate target user according to a preset policy, for example, according to the load balancing policy of the target user, the authentication is performed through step 306. Select one or more suitable target users B among the target users.

Step 312, the control server C sends the invitation of the invited party C, D, E, and F according to the session role setting request information, and sends the invitation to the invitee user (D, E, F terminal) to invite the session to join the session. Target User B sends a session role setup request and a session invitation.

Step 313: The target user B determines whether to accept the session invitation and the session role setting request. If the session invitation is accepted, the session role setting request is also accepted, that is, the user role is handed over or specified, and the session role setting is accepted. Successful, if the target user B does not accept the session invitation and The session role setting request indicates that the session role setting failed. The target user B terminal returns a response message (OK) of the success or failure of the session role setting to the session initiator A terminal.

Because the target user B receives the session role setting request at the same time as receiving the session invitation, an "OK" response message indicates that the session invitation is accepted and the session role setting request is accepted.

In addition, the invitee users B, C, D, E, and F can choose whether to accept the session invitation. When one of the invited users C, D, E, and F accepts the session invitation, the session is successfully established.

Step 314, after receiving the success response message indicating the session role setting from the target user B, the control server C sends a notification message ( NOTIFICATION) that the session role setting is successful to the session initiator A terminal. This notification message contains the following information: PoC session ID, accept role handover or assignment ID, and new mitigation role session role, namely: Target User B's PoC address.

Step 315: After receiving the notification message that the session role set by the control server C is successfully set, the session initiator A terminal returns an "OK" response message to the control server C.

In addition, when the authentication fails in step 306, in step 312, the control server C sends a session invitation to the user B, C, D, E, and F terminals, that is, the session invitation and the session role setting request are performed independently, step 306 When the medium authentication fails, the control server C sends a notification message that the session role setting fails to the session initiator A user. Or the target user B only accepts the session invitation but does not accept the session role setting request. The session invitation and the session role setting request are performed independently, and the session is established normally.

In step 301, the session request may carry more than one session role setting request information, and the target user may be one or more. When multiple session roles are set to the same target user B, the target user B can select the session role according to the preset policy. If one of the session roles is set successfully, the session role is set successfully.

Further, in step 306, if the session role of the target user B is specified in the XML file on the XDMS, and the session role is different from the session role set by the session role setting request information in the session request, the control server may be configured according to the preset Adjusting the policy, for example: Before authenticating session initiator A and target user B, set the priority of the two methods according to the session role designation in the pre-set XML file and the session role setting request information in the session request, for example : Priority mining The session role set by the session role setting request information in the session initiation request may also be based on the session establishment parameter, for example, the permission of the session initiator A user, to determine the session role set to the target user B, and after determining the set session role, The session initiator A and the target user B are authenticated in combination with the session role.

As shown in FIG. 5, it is a flowchart of another embodiment of a method for setting a session role by a session initiator when a group session or a temporary session is established. In this embodiment, a session role is separately sent to the target user B. Set the request and session invitation, and divide step 312 into:

Step 3121: The control server C sends a session invitation to the users B, C, D, E, and F terminals; and in step 3122, the control server C sends a session role setting request to the target user B.

Corresponding to step 3121 and step 3122 respectively, step 313 is divided into:

Step 3131, the target user B determines whether to accept the session invitation, and if yes, returns a response message (OK) to the control server C to accept the session invitation;

In step 3132, the target user B determines whether to accept the session role setting request, and if yes, returns a response message (OK) to the control server C to accept the session role setting request. There is no chronological relationship between step 3121 and step 3122 and between step 3131 and step 3132.

In the embodiment shown in FIG. 5, after the target user B accepts the session invitation and the response message accepting the session role setting request, the target user B can accept only the session invitation and reject the session role setting request, and the session role setting fails. The processing mechanism is more flexible without affecting the successful establishment of the multimedia session.

In addition, in the embodiment shown in FIG. 4 or FIG. 5, the session initiator A may also assign the session role to itself, that is, the PoC address of the target user specified by the session role is the PoC address of the session initiator A. The authentication of step 306 may be the authentication of the authority of the session initiator A, or the session initiator A may be authenticated by soliciting the opinions of other session participants and the preset criteria. For example: When other temporary session participants agree or partially agree that A assigns the session role to itself, Control Server C can authenticate session Initiator A accordingly.

A session request containing a role handover/designation request may also be initiated by control server C. Hypothesis A multimedia session is started at 9 o'clock in advance, and the users invited to participate in the session include A, B, C, D, E, and F, and User B first serves as the mitigating role of the session, and users A, C, D, and E Participating the user with F is a normal session, and the related parameters of the stored session indicate that the mitigating role of the session is rotated by the session participating members B, A, C, D, E, and F, and each person hosts a 30-minute meeting. Then, when the control server C initiates the session, the session role is specified, that is, the role is specified.

As shown in FIG. 6, a flowchart of an embodiment of a method for setting a session role by a control server when a group session or a temporary session is established according to the present invention includes the following steps:

Step 401: When the control server C initiates the session, the session invitation is generated and the session role setting request information is written therein to generate a session invitation including the session role setting request information, where the session role setting request information is specifically a session role specifying request, the session The role specification request information includes the following information: PoC session identifier; PoC address of the target user B specified by the session role; identifiers of all invited parties A, B, C, D, E, F, including separate user identifiers, for example: SIP The address, for the predefined group, also includes the group ID (Group ID); requesting the specified session role to mitigate the role identifier, indicating that the control server C wants the specified session role to be a mitigating role.

Step 402: The control server C sends a session invitation (INVITE) carrying the session role setting request information to the session participating users VIII, B, C, D, E, and F.

In addition, the control server C may also send the session role setting request and the session invitation directly to the session participating users, B, C, D, E, F without writing the session role setting request information into the session invitation.

Step 403: The target user B receives the session invitation carrying the session role setting request information, and determines whether to accept the session invitation. If the session invitation is accepted, the role role of the mitigation role is accepted, that is, the mitigation role in the current session is accepted. , returns an "OK" response message to the control server C.

The control server C sends a session role setting request and a session invitation to the target user B, and invites the target user B to join the session to implement the designation of the session role.

In step 404, the other invited users (, D, E, F select whether to accept the session invitation, and if yes, return an "OK" response message to the control server C respectively. Additionally, step 404 may be performed prior to step 403 or concurrently with step 403.

Step 405: The control server C sends a notification (Notify) to all the ordinary session participating members participating in the session, and prompts that the mitigating role of the current session is user B, and only the notification message is sent to the session participating user A.

Step 406: After the session participant user A receives the notification message, it returns an "OK" confirmation message to the control server C, and confirms receipt of the notification message.

In addition, before the step 401, the target user B may also be authenticated by using the method shown in FIG. 5, and the step 401 is performed after the authentication is passed.

When the session role handover or the specified setting is performed during the process of pre-defined group multimedia session or temporary multimedia session, if the target user B set by the session role is not a multimedia session member, the target user B may be invited to join the current session, in the session invitation. The session role setting request is written to set the session role.

As shown in FIG. 7, a flowchart of an embodiment of a method for setting a session role when a target user B set by a session role is not a session member in the process of performing a group session or a temporary session according to the present invention includes the following steps: Core network A Sending a session role setting request to the participating participating server A, where the session role setting request includes the following information: a PoC session identifier; a PoC address of the target user B that the scheduling role is handed over; and a scheduling role identifier that requests the handover.

Steps 503~505, the participating server A queries the routing information of the control network according to the PoC session identifier, and routes the session role setting request to the control server C through the SIP/IP core network A and the SIP/IP core network C of the control network.

Step 506, the control server C receives the session role setting request, and learns that the target user B does not join the multimedia session of the predefined group, and authenticates the session initiator A and the target user B. If the authentication is passed, go to step 512~ 516; Otherwise, perform steps 507~511.

Specifically, according to the identifier of the invitee in the session role setting request, determining that the session is a reservation The multimedia session of the right group is also a temporary multimedia session, and according to the online information of the target user B, it is determined whether the target user B joins the session.

The specific authentication method can be the same as step 306. Alternatively, step 507 may be directly executed without performing the authentication of step 506.

Steps 507~511, the control server C returns a reject message (REJECTED) for rejecting the session role setting to the session initiator A terminal.

Steps 512-516, the control server C knows that the target user B is not online according to the online information of the target user B, for example, the user information of the current session recorded on the server, or according to the presence information of the target user B obtained from the presence server. It is known that the target user B is not currently a session member, and then generates a session invitation that invites the target user B to participate in the session, writes a session role setting request to the session invitation, and controls the SIP/IP core network C and the target user B in the network. The terminal sends a session invitation (INVITE) carrying a session role setting request, where the session role setting request includes the following information: a PoC session identifier; a session role handover or a designated target user B PoC address; requesting a handover or a specified session role Logo.

Steps 517-525, the target user B determines whether to accept the session invitation, and if accepts the session invitation, and also accepts the session role setting request, that is, accepts the session role handed over or designated by the user A, indicating that the session role setting is successful. If the target user B does not accept the session invitation, it indicates a response message (OK) of the session corner failure.

When the target user B set by the session role is not a multimedia session member, the target user B is invited to join the current session, and the session role setting request is written to the session invitation, and the session role setting request is accepted when the target user B accepts the session invitation, thereby realizing The setting of the session role.

Steps 526-530, after receiving the response message from the target user B, the control server C sends a notification message ( NOTIFICATION) of the success or failure of the session role to the session initiator A terminal. Steps 531-535: After receiving the notification message that the session role setting succeeds or fails to be sent by the control server C, the session initiator A terminal returns an "OK" response message to the control server C.

In the same manner as the embodiment shown in FIG. 5, in steps 512-516, the control server C can separately send the session role setting request and the session invitation to the target user B separately. Thus, target user B can only accept the session invitation and reject the session role setting request. Whether the target user B accepts the session role setting request does not affect its joining session, and the processing mechanism is more flexible. Correspondingly, in steps 513-520, the target user B can respectively return two response messages to the control server C for accepting the session invitation and the session role setting request respectively.

In the embodiment shown in FIG. 7, when the target user B is not currently a session member, the control server C can send a notification message to the target user B, informing him of the current session message and the session role setting request initiated by the session initiator A. Target User B can initiate a session join request when he or she wishes, or further accept the role settings. As shown in FIG. 8 , a flowchart of another embodiment of a method for setting a session role when a target user B set by a session role is not a session member in the process of performing a group session or a temporary session according to the present invention includes the following steps: The network A sends a session role setting request to the participating participating server A, where the session role setting request includes the following information: a PoC session identifier; a session role handover or a designated target user B PoC address; a request handover or a specified scheduling role identifier .

Steps 603~605, the participating server A queries the routing information of the control network according to the PoC session identifier, and routes the session role setting request to the control server C through the SIP/IP core network A and the SIP/IP core network C of the control network.

Step 606: The control server C receives the session role setting request, and authenticates the session initiator A and the target user B. If the authentication passes, step 612 is performed; otherwise, steps 607-611 are performed.

The specific authentication method can be similar to step 306. Similarly, step 607 can be performed directly without the authentication of step 606.

Steps 607~611, the control server C returns the reject session role setting to the session initiator A terminal. Rejection message (REJECTED).

Steps 612-616, the control server C knows that the target user B is not online according to the presence information on the target user B terminal, and knows that the target user B is not currently a session member, and then sends a notification message to the target user B. The notification message includes a session message, for example: a PoC session identifier, a group identifier of the session, and the like, and a session role setting request message, for example: a session role setting request user A, a session role identifier; the notification message The sending method is not limited, for example: It can be implemented by SIP notification (Notify) or instant message ( Instant Message), as long as the target user B can be informed of the session message and the session role setting request message.

Steps 617-621, when the user B is willing to join the session and accepts the session role setting request, the terminal B sends a join session request to the control server C, which carries the session message, for example: the PoC session identifier and the group identifier where the session is located. Wait.

In the same manner as the embodiment shown in FIG. 5, the target user B can separately send the join session request and the accept session role setting request to the control server C, and the target user can only request to join the session without accepting the session role setting, that is, whether the target user accepts the session. Role transition or assignment does not affect its joining session.

Steps 622-626, when the control server C receives the join session request sent by the target user B terminal, it is learned that the target user B has accepted the session role setting, and sends a notification message (NOTIFICATION) that the session role setting is successful to the session initiator A terminal.

When the target user B set by the session role is not a multimedia session member, a request message is set to the target user B session message and the session role, and the target user B sends a join session request to accept the session invitation when the user B is willing to join the session and accept the session role setting request. The session role setting request is accepted to implement the setting of the session role.

The session role setting request may carry one or more session role settings, and the target user B may also be one or more. When multiple session roles are set to the same target user B, the target user B can select the role when joining the multimedia session. If the selected session role setting fails, you can also select another session role. As long as one of the session roles is set successfully, the session role is set successfully. Steps 627-631, after receiving the notification message that the session role setting succeeded by the control server C is successfully received, the session initiator A terminal returns an "OK" response message to the control server C.

As shown in FIG. 9 , a flowchart of an embodiment of a method for setting a session role by a session member is performed by a session member in the process of a temporary session of the present invention, where the target user B is a participating user in the session, and includes the following steps:

Steps 701-702, the current session member A uses the terminal A to send a session role setting request (REFER/INVITE) to the participating participating server A through the SIP/IP core network A in the local network, where the session role setting request includes the following information. : PoC session ID; PoC address of the current session member A, PoC address of the target user B set by the scheduling role; Scheduling role ID of the request setting, for example: mitigation role.

Steps 703~705, the participating server A queries the routing information of the control network according to the PoC session identifier, and routes the session role setting request to the control server C through the SIP/IP core network A and the SIP/IP core network C of the control network.

Steps 706-710: The control server C forwards the session role setting request (REFER/INVITE) to the target user B when the current session is a temporary multimedia session and the target user B has joined the temporary multimedia session.

Steps 711-715, the target user B determines whether to accept the session role set by the session role setting request. If the session role is accepted, the target user B terminal controls through the SIP/IP core network B, the participating server B, and the SIP/IP core network C. Server C sends the response message (ACCEPTED) of the target user B to accept the session role.

Step 716: The control server C sends, to the other session participating members C, D, E, F or some of the session participating members of the temporary multimedia session, whether to agree to the target user B to serve as the set session requesting information, and participate in other sessions. The member (, D, E, F or part of the session participation member returns the opinion information and the preset criteria for allowing the target user B to assume the session role, and further authenticates the target user B. If the target user B is allowed according to the preset setting As the standard for the session role, all other session participants (, D, E, and F agree that the target user B is set up by user A. The session role, or a plurality of other session participation members, agrees that the target user B serves as the session role set by the user A, and the target user B performs authentication, and step 717 is performed. If the number of other session participating members C, D, E, and F agrees that the target user B assumes the role of the session cannot reach the preset standard that allows the target user B to assume the session role, the authentication fails, and the control server C moves to the current session. The member A terminal returns a notification message that the session role setting failed.

Determining whether to allow the target user B to serve as the session role setting request setting session by enlisting other temporary multimedia session members C, D, E, F, or whether some of the session participation members agree with the target user B as the set session role. Character. The session role is set when the target user B is allowed to assume the session role set by the session role setting request.

Step 716 may be performed first. After the authentication is passed through step 716, step 711 to step 715 may be performed, or step 716 and step 711 to step 715 may be performed simultaneously. Step 718 is performed after the authentication is performed in step 716 and the target user B accepts the session invitation in steps 711 to 715. As long as one of the two conditions is not satisfied, the control server C returns the session role setting to the current session member A terminal. Failed notification message.

Step 717~721, the control server C returns a response message (ACCEPTED) of the session role setting success to the current session member A terminal.

Steps 722 to 726, the control server C sends a notification message (NOTIFICATION) to the current session member A terminal that the session role is set successfully.

Steps 727~731, the current session member A terminal returns an "OK" response message to the control server C after receiving the notification message that the session role set by the control server C is successfully set.

In addition, between step 705 and step 706, the method may further include:

The control server C recognizes the session role setting request as a session role handover request or a session role designation request. If the request is specified for the session role, step 706 is directly executed. If the session role is handed over, the control server C also authenticates the current session member A. Specifically, the control server C obtains the current session member A related information from the XDMS according to the PoC address of the current session member A, and determines whether the current session member A is currently a mitigating role according to the information, or further determines the current session. Whether A has the permission to set or assign a mitigating role. If the authentication fails, the control server C returns a rejection message (REJECTED) rejecting the session role setting to the current session member A terminal. If the authentication is passed, step 706 can be performed.

Further, if the current session member A is authenticated, the control server C can authenticate the target user B according to the PoC address of the target user B carried in the request, for example: by using the terminal with the target user B. Obtaining the capability information of the terminal interactively, or acquiring the terminal information of the terminal user B from an application server or a database storing the terminal information of the target user B, and performing a risk on the terminal capability of the target user B according to the information, for example : Determine whether the target user B's terminal has the ability to play the role of mitigating. If the authentication fails, the control server C returns a reject message (REJECTED) rejecting the session role setting to the current session member A terminal. If the authentication is passed, step 706 can be performed.

Since it is a temporary multimedia session, if there is no such authentication between step 705 and step 706, it is possible that the target user B does not really successfully implement the role setting when accepting the role setting request.

In the step 701-702, the session role setting request may carry one or more session roles to be handed over or specified, and the target user B may be one or more. When multiple session roles are set to the same target user B, target user B can select the session role. If one of the session roles is set successfully, the session role is set successfully.

If the target user B set in the session role is not the participating user in the session, the target user B set by the session role may be invited to join the session, specifically, in the embodiment shown in FIG. 7 or FIG. After the target user B passes the authentication or is willing to accept the role set by the session role setting request, the target user B is invited to join the session, and the target user B is added to the session after setting the role; or, the target user B joins the session and then authenticates it.

In addition, during the process of the temporary multimedia session, the session role may also be set by the application server, and the application server may trigger the initiation of the session role designation request based on the session-related parameter or the request of a certain user on the application server; the target specified by the session role User B can be based on the following factors Determining: i) determining according to capability information of each session terminal stored in the application service; ii) determining according to the application server, for example: determining according to an allocation policy of a multimedia session role pre-stored on the control server; iii) having a certain according to the multimedia session The assigned policy of the user's defined multimedia session role is determined. During the process of the temporary session, the method for setting the session role by the application server is similar to the embodiment shown in FIG. 6. The difference is that, since the session has been established, the application server does not need to initiate a session request, and the session role designation request is separately initiated. There is no need to process session requests in subsequent processes.

As shown in FIG. 10, it is a schematic structural diagram of an embodiment of a server according to the present invention. The server of this embodiment includes a first receiving module 11, a first sending module 12, and a setting module 13. The first receiving module 11 is configured to receive a session role setting request for setting a session role in the group sent by the terminal. The setting module 13 is configured to set a session role identifier in the group information according to the session role setting request, for example: setting a session role identifier in the group information, implementing handover, designation, modification, etc. of the session role, After the session role identifier is set, the setting module 13 returns a setting success response message or a setting failure result message to the first receiving module 11 to be sent by the first sending module 12 to the terminal. The first sending module 12 is configured to return a response message that the session role setting is successful to the terminal or set a failed setting result message. In addition, the first sending module 12 can also be used to send group information to the terminal.

In addition, the foregoing server may further include a storage module 14 configured to store group information, where the group information includes session related information, for example: session role information, so that the terminal may obtain the group information or setting module 13 from the server. Set the session role ID in the group information.

Referring to FIG. 10, the server may further include a first authentication module 15 for authenticating the terminal user that sends the session role setting request and/or the target user set by the session role; the setting module 13 is at the terminal user and / After the target user passes the corresponding authentication, the session role identifier in the group information is set accordingly. The server of the embodiment shown in Figure 10 can be used as a controller for implementing a method embodiment for setting a session role as shown in Figure 3.

FIG. 11 is a schematic structural diagram of a terminal embodiment of the present invention, where the terminal includes: The first generation module 21, the second sending module 22 and the second receiving module 23. The first sending module 21 is configured to generate a session request that includes the session role setting request information; the second sending module 22 is configured to send a session request that includes the session role setting request information to the server; and the second receiving module 23 is configured to receive the server return. The session role sets a successful reply message with a notification message, or sets a failed reply message.

As shown in FIG. 12, it is a schematic structural diagram of another embodiment of the server of the present invention. The server of this embodiment includes a third receiving module 31, a third sending module 34, an identifying module 32, and an indicating module 33. The third receiving module 31 is configured to receive a session request that includes the session role setting request information sent by the terminal. The identifying module 32 is configured to obtain the target user in the session role setting request information from the session request received by the third receiving module 31. The identifier may also identify the session role in the session setting request information. The instructing module 33 is configured to generate a session invitation according to the session request including the session role setting request information, and may further instruct the third sending module 34 to send the session role setting to the target user terminal. The third sending module 34 is configured to send a session role setting request and a session invitation to the target user terminal, and return a response message and a notification message for successfully setting the session role to the terminal that sends the session request, or set a failure response message. .

In the server shown in FIG. 12, the first authentication module 15 may be further configured to acquire the target user identifier from the session role setting request information according to the identification module 32, and perform the session initiator terminal user and/or the target user. The authentication module 33 generates a session invitation after the session initiator terminal user and/or the target user passes the corresponding authentication, and instructs the third sending module 34 to send the session role setting request and the session invitation to the target user terminal.

Further, the server of the embodiment shown in FIG. 12 may further include a selection module 35, configured to: when the identification module 32 learns that the session role setting request information has multiple target user identifiers and/or multiple session roles, according to preset The policy selects the target user and/or the session role; the instructing module 33 generates a session invitation and instructs the third sending module 34 to send the selected session role setting request and the session invitation to the selected target user terminal. The server of the embodiment shown in FIG. 12 can be used as a control server, and combined with the terminal of the embodiment shown in FIG. 11, can be used to implement the method for setting a session role in the embodiment shown in FIG. 4 and FIG. The terminal and the server exchange information with the third sending module 34 and the third receiving module 31 in the server through the second sending module 22 and the second receiving module 23 in the terminal.

FIG. 13 is a schematic structural diagram of still another embodiment of a server according to the present invention. The server of the embodiment includes a first generation module 21, a fourth sending module 41, and a fourth receiving module 42. The first generating module 21 is configured to generate a session request including the session role setting request information according to the pre-stored session information. The fourth sending module 41 is configured to include the session role setting request information generated by the first generating module 21 The session request sends a session role setting request and a session invitation to the target user terminal. The fourth receiving module 42 is configured to receive a response message and a notification message that the target user terminal returns the session role setting success, or set a failure response message.

In the embodiment shown in FIG. 13, the server may further include a second authentication module 43, configured to perform authentication on the target user according to the pre-stored user information according to the target user identifier in the session role setting request information; The generating module 21 generates a session request including the session role setting request information after the target user passes the authentication. The server of the embodiment shown in Fig. 13 can be used as a control server for implementing the method of setting a session role in the embodiment shown in Fig. 6.

FIG. 14 is a schematic structural diagram of still another embodiment of a server according to the present invention. The server of the embodiment includes a fifth receiving module 51, a third authentication module 52, a second generating module 53, and a fifth sending module 54. The fifth receiving module 51 is configured to receive the session role setting request sent by the session initiating terminal, and obtain the target user identifier from the session role setting request. The fifth sending module 54 is configured to send the session role setting request and the second to the target user terminal. The session invitation generated by the module 53 is generated, and the response message and the notification message of the session role setting success are returned to the session initiating terminal, or the failed response message is set. The third authentication module 52 is configured to identify the session type according to the session role setting request. That is, whether the current session is a multimedia session or a temporary session of the predefined group, and whether the target user is added to the session. The second generation module 53 is configured to generate a session invitation when the target user does not join the session. Referring to FIG. 14, the server may further include a first authentication module 15 configured to authenticate the session initiation terminal user and/or the target user according to the user identifier in the session role setting request and the pre-stored user information. The fifth sending module 54 is configured to send a session role setting request and a session invitation to the target user terminal not joining the session after the terminal user and/or the target user pass the corresponding authentication, and send the session role setting to the target user terminal joining the temporary multimedia session. request. The server of the embodiment shown in FIG. 14 can be used as a control server for implementing the method of setting a session role in the embodiment shown in FIGS. 7 to 9.

The embodiments of the present invention respectively provide that during the pre-defined group session and the temporary session establishment process, the target user that the role is handed over during the pre-defined group session is not a member of the current session. In the case, and during the course of the temporary session, the technical solution of the transition/assignment of the session role is performed, so that the session role can be handed over and/or specified in each of the above cases.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing storage medium includes: ROM, RAM, magnetic disk or optical disk, and the like, which can store various program codes. Finally, the above embodiments are only used to illustrate the technology of the present invention. The present invention will be described in detail with reference to the preferred embodiments, and those skilled in the art should understand that the invention may be modified or substituted without departing from the spirit and scope of the invention. .

Claims

Rights request

A method for setting a session role, characterized in that:

The method for setting a session role according to claim 1, wherein the receiving the session role setting request sent by the terminal further comprises:

And authenticating the target user set by the terminal user and/or the session role according to the terminal user identifier carried in the session role setting request and the target user identifier set by the session role, and if the authentication is passed, the group information is The session role ID in the setting is set accordingly;

If the authentication fails, the setup result message that fails to be set is returned to the terminal.

The method for setting a session role according to claim 2, wherein, if the authentication is passed, sending a prompt message to the target user terminal whether to accept the session role set by the session role setting request, and Determining, according to the reply message returned by the target user terminal, whether the target user accepts the session role,

If the target user accepts the session role, the session role identifier in the group information is set accordingly;

If the target user does not accept the session role, return a setting result message that fails to be set to the terminal.

The method of setting a session role according to any one of claims 1 to 3, wherein the method further comprises:

According to the setting result, a response message indicating that the session role setting is successful is returned to the terminal or a failed setting result message is set.

5. A method for setting a session role, the method comprising:

The server sets the target user identifier in the request information according to the session role carried in the session request. Knowledge, send a session role setting request and a session invitation to the target user terminal;

The method for setting a session role according to claim 5, wherein the session role setting request is initiated when a session initiator terminal initiates a session request, or is initiated by the server when initiating a session.

The method for setting a session role according to claim 5, wherein before the server sends the session role setting request and the session invitation to the target user terminal, the method further includes: the server setting according to the session role The request information is used to authenticate the session initiator user and/or the target user. After the authentication is passed, the server sends the session role setting request and the session invitation to the target user terminal.

The method for setting a session role according to claim 7, wherein the server authenticating the session initiator user and/or the target user is specifically: the server according to the session role Setting the identifier of the invitee in the request information to identify whether the session is a multimedia session of a predefined group or a temporary multimedia session, and according to the recognition result, the session role setting according to the multimedia session or the temporary multimedia session of the predefined group The right mode, the session initiator user and/or the target user are authenticated.

The method for setting a session role according to claim 8, wherein the authenticating the session initiator user according to the authentication mode set by the temporary multimedia session to the session role is as follows: The authority information of the session initiator user, and verifying the authority of the session initiator user according to the permission information;

The authenticating the target user according to the authentication mode set by the temporary multimedia session to the session role is: acquiring the terminal capability information of the target user, and performing terminal capability verification on the target user according to the terminal capability information. And/or obtaining the authority information of the target user, and performing authority verification on the target user according to the permission information.

The method for setting a session role according to claim 5, wherein the session role setting request further includes a user identifier of the invitee, and the server sends the session role setting to the target user terminal. When requesting and inviting a session, the session invitation is also sent to the user terminals of all invitees according to the user ID of the invitee.

The method for setting a session role according to claim 5, wherein the server receives a response message that the session role set by the target user terminal is successfully set, and further includes

The method for setting a session role according to claim 5, wherein the sending the session role setting request and the session invitation to the target user terminal is specifically: the server according to the session role setting request information a target user identifier, sending a session invitation to the target user terminal, where the session invitation includes session role setting request information;

When the server sends the session invitation including the session role setting request information to the target user terminal, and further, according to the identifier of the invitee in the session role setting request information, all the other than the target user The invitee terminal sends a session invitation that carries the session role setting request information.

The method for setting a session role according to claim 12, wherein before the server sends the session role setting request and the session invitation to the target user terminal, the method further includes: the server setting according to the session role The request information is used to authenticate the target user. After the target user passes the authentication, the server sends a session invitation including the session role setting request information to the target user terminal.

The method for setting a session role according to claim 5, wherein the target user selects to join the session and accepts the session role, and returns a response message that the session role is successfully set to the server; The server sends a notification message that the target user assumes the session role to an invitee user terminal other than the target user.

The method for setting a session role according to claim 5, wherein the target user selects whether to join the session, and whether to accept the session role setting request The session roles include:

Determining whether to accept the session role setting request and the session invitation, and accepting the session invitation, joining the session, and selecting whether to accept the session role; if not accepting the session invitation, refusing to join The session, and rejecting the session role.

The method for setting a session role according to any one of claims 6 to 15, wherein if there are multiple target user identifiers and/or multiple session roles in the session role setting request information, The sending, by the server, the session role setting request and the session invitation to the target user terminal is: the server selects a target user and/or a session role according to a preset policy, and sends a corresponding target to the selected target user terminal. Session role setup request and session invitation.

The method for setting a session role according to claim 8 or 13, wherein, when the session is a temporary multimedia session, the server authenticating the target user is specifically: the server according to the The identifier of the invitee, sending, to all or part of the invitee user terminal, the opinion request information for agreeing to the target user as the session role, and according to the opinion information returned by the invitee terminal and the preset permission target The user assumes that the target user authentication is passed; otherwise, the target user authentication fails.

18. A method for setting a session role, the method comprising:

If the target user identified by the target user identifier is not in the session, the server sends the session role setting request and the session invitation to the target user terminal.

The method for setting a session role according to claim 18, wherein after the server obtains the target user identifier from the session role setting request, the method further includes:

The server authenticates the session initiator user and/or the target user according to the session role setting request, and after the authentication is passed, the server sends the session role to the target user terminal. Set up requests and session invitations.

The method of setting a session role according to claim 19, wherein after the authentication is passed, the method further comprises:

The server determines, according to the identifier of the invitee in the session role setting request, whether the session is a multimedia session of a predefined group or a temporary multimedia session, and determines the target user according to the online information of the target user. Whether the session role setting request is sent to the target user terminal, or the session role setting request is sent to the target user terminal if the session is not in the session; With session invitations.

The method of setting a session role according to claim 18, wherein the method further comprises:

The target user determines whether to agree to join the session, and when agreeing to join the session, sends a join session request to the server, and selects whether to accept the session role.

The method for setting a session role according to claim 21 or 22, wherein the selecting, by the target user, whether to accept the session role comprises:

And the control server sends, according to the identifier of the invitee in the session setting request, the opinion request information of whether the target user is engaged as the session role, and according to the invitee The opinion information returned by the terminal and the pre-set allowable target user are allowed, and the target user selects to accept the session role in the session role setting request.

The method for setting a session role according to claim 23, wherein when the target user selects to accept the session role, the method further includes: Successful response message; Set a successful notification message.

The method for setting a session role according to claim 18, wherein if the session role setting request has multiple target user identifiers and/or multiple session roles, the server is directed to the target user terminal. The sending the session role setting request and the session invitation is specifically: the server selects a target user and/or a session role according to a preset policy, and sends a corresponding session role setting request and a session invitation to the selected target user terminal.

26. A server, comprising:

a first receiving module, configured to receive, by the terminal, a session role setting request for setting a session role in the group;

The server according to claim 26, further comprising:

a storage module, configured to store the group information.

The server according to claim 26 or 27, further comprising: a first authentication module, configured to authenticate the target user and/or the target user set by the session role; The session role ID in the group information is set accordingly.

29. A terminal, comprising:

a first generation module, configured to generate a session request that includes the session role setting request information, and a second sending module, configured to send, to the server, a session request that includes the session role setting request information; The second receiving module is configured to receive a response message and a notification message that the session role set by the server is successfully set, or set a failure response message.

30. A server, comprising:

a third receiving module, configured to receive a session request that is sent by the terminal and includes session role setting request information;

An identification module, configured to acquire, from the session request, a target user identifier in the session role setting request information;

The server according to claim 30, further comprising:

The first authentication module is configured to authenticate the terminal user and/or the target user according to the session role setting request information; a session invitation.

The server according to claim 30 or 31, further comprising: a selecting module, configured to: when the session role setting request information has multiple target user identifiers and/or multiple session roles, according to a preset policy, selecting a target user and/or a session role; the third sending module sending the selected session role setting request and the session invitation to the selected target user terminal.

33. A server, comprising:

a first generation module, configured to generate a session request that includes the session role setting request information, and a fourth sending module, configured to: according to the session request that includes the session role setting request information generated by the first generation module, to a target The user terminal sends the session role setting request and session Invitation

The server according to claim 33, further comprising:

a second authentication module, configured to authenticate the target user according to the session role setting request information;

The first generation module generates a session request including the session role setting request information after the target user passes the authentication.

35. A server, comprising:

a fifth receiving module, configured to receive a session role setting request sent by the terminal, and obtain a target user identifier from the session role setting request;

The server according to claim 35, further comprising:

a first authentication module, configured to authenticate the terminal user and/or the target user; after the terminal user and/or the target user pass the authentication, the fifth sending module sends a The target user terminal not joining the session sends the session role setting request and the session invitation, and sends the session role setting request to the target user terminal joining the temporary multimedia session.