Method for distributing files-in-group in IMS (IP multimedia subsystem) multimedia meeting

Abstract

The invention discloses a method for distributing files-in-group in an IMS (IP multimedia subsystem) multimedia meeting, and relates to the field of communication. By means of 're-INVITE', 'UPDATE' and 'MESSAGE' methods, the process control of distribution of temporary files-in-group is realized in an existing IMS multimedia meeting session, and other ongoing multimedia meeting media streams are not influenced by the process. The 're-INVITE' method is used for initiating a files-in-group distribution request and transmitting a media stream negotiation of the files-in-group; the 'UPDATE' method is used for releasing the files-in-group to distribute media stream carrying resources after file distribution; and the 'MESSAGE' method is used for transmitting a file distribution result report to an initiator of the distribution of the files-in-group.

Description

technical field [0001] The present invention relates to the communication field, in particular to multimedia application technology based on IP Multimedia Subsystem (IP Multimedia Subsystem, "IMS" for short). Background technique [0002] In the third generation partnership project (3rd Generation Partnership Project, referred to as "3GPP") R5 stage, the introduction of IP multimedia core network subsystem (IP Multimedia Subsystem, referred to as "IMS"), IMS uses the IP packet domain as its control signaling The bearer channel for media transmission uses the Session Initiation Protocol (Session Initiation Protocol, "SIP") as the call control signaling. In the IMS network, various application servers (Application Server, "AS" for short) are used to provide IP multimedia (IP Multimedia, "IM" for short) value-added services for IMS users. [0003] IMS consists of call state control function (Call Session Control Function, referred to as "CSCF"), media gateway control function ...

AI Technical Summary

Problems solved by technology

[0006] 1) It is necessary to use some methods to inform other members of the group of file-related information in advance, which is more suitable for the mode of distributing files to all members of the meeting, and for the temporary distribution of files in the group during the meeting, it is impossible for the participants to temporarily decide to share files Members in the group are notified in advance, and other methods such as e-mail are also inefficient;

[0007] 2) If the file receiving members do not actively feed back the file receiving results to the file distribution participants through some other methods, the file distribution participants will not be able to know the status of the receiving results of the shared files in the group;

[0008] 3) The FTP method is independent of the IMS multimedia conference session model and is not controlled by IMS multimedia session signaling. In fact, the intra-group file distribution based on this method has not been organically integrated with the IMS multimedia system based on SIP signaling

[0010] 1) Since the sub-conference design mode is specially designed for intra-group multimedia conferences, not for the requirement of intra-group file distribution, the efficiency of intra-group file distribution through this mode is not high;

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