Multi-point layered meeting control method in IMS system

Abstract

The invention discloses a control method for a multipoint hierarchical conference in an IMS system. The control method relates to the technical field of communication and can effectively reduce the signaling load of a conference central application server and the traffic flow in the down direction and realize the high-efficiency management of user members. The method comprises the following realization steps: establishing the connection between a conference chairman and the conference central application server so as to establish the multipoint hierarchical conference and acquire an open service mark of the conference as a unique mark; monitoring the conference member list change events through the application server; if receiving a CTRL request, analyzing the head parameters in the request through the application server, and entering different processing flows according to the difference in the head parameters so as to complete the conference member joining, deleting and attribute amendment; informing the conference chairman the results after the operation on designated members is completed; and releasing the resources if the conference is finished, otherwise continuing to monitor. The method can be used for the multipoint video conference traffic in the IMS.

Description

technical field [0001] The invention belongs to the technical field of communication, and specifically relates to a multipoint layered conference MPVC control method in the IMS system, which can be used for multipoint video conference services in the IP multimedia subsystem IMS. technical background [0002] With the rapid development of telecommunication networks, computer networks and radio and television networks, the networks are showing a trend of mutual integration, and the network structure has begun to change from quantitative to qualitative, and gradually evolve and transition to the next-generation network NGN. NGN is not a simple extension and superposition of the existing telecommunication network and IP network, but a transformation of the entire network framework and an overall solution. In order to realize the integration of fixed network, mobile network and Internet, 3GPP proposed the concept of IMS in its R5 standard. IMS is an IP-based next-generation netw...

AI Technical Summary

Problems solved by technology

However, this method has the following defects: 1. Each conference member establishes a SIP connection with the conference chairperson. When there are too many conference members, it is easy to cause the conference chairperson to be overloaded; 2. The conference chairperson not only needs to establish a signaling connection with the conference members, It is also responsible for media mixing and processing, which increases its processing capacity and implementation complexity; 3. In the process of conference control and management, in addition to the SIP protocol, H.248 and MGCP are also involved, and complex protocol interoperability issues need to be solved

[0010] There are following defects in this method: 1, SIP user agent needs to carry out conversion and reverse transformation between H.323 protocol message and class XML format message, realizes complexity increase; 2, does not utilize the extensibility and the flexibility of SIP agreement itself , involving multiple protocols, the conversion between messages will affect work efficiency

[0012] This solution has the following defects: 1. The SIP signaling connection of the control plane is concentrated in the conference center, which makes the conference center overload; 2. The real-time transport protocol RTP data packets of the user plane are all sent to the conference center, resulting in an overload of MRFC media processing 3. The user behavior-driven conference mode is not conducive to the centralized control and management of conference member rights; 4. In the process of conference control and management, other protocols need to be introduced, which increases the complexity of conference implementation and also violates the IMS system. Requirements for SIP as the only call control protocol

[0013] In short, neither the traditional video conferencing nor the existing IMS video conferencing solutions consider layering the organizational structure of video conferencing members to reduce the number of signaling connections and media processing load in the conference center; in addition, conference member control, management The use of multiple protocols makes the conference management and control process more complicated and increases the difficulty of business implementation; the management of conference members adopts a user behavior-driven model, which is not conducive to conference control management, centralized management of user rights, and implementation of conference policies

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