Service carrying method, communication terminal, control network element S-CSCF and system

Abstract

The embodiment of the invention discloses a service carrying method, which may comprise the following steps: a communication terminal performs media negotiation with a communication opposite end at a first access network according to a service request; the communication terminal performs first media resource reservation at the first access network according to the media negotiation result; if the reserved resource of the first access network cannot meet a target resource, the communication terminal performs second media resource reservation at a second access network; after the communication terminal sends a message of completing first media resource reservation to the communication opposite end, the communication terminal receives a message of completing second media resource reservation sent by the communication opposite end after completing media resource reservation; the communication terminal builds service connection with the communication opposite end, and respectively carries media streams at the first access network and the second access network according to carrying modes of the media streams corresponding to target services in the message of completing first media resource reservation. The embodiment of the invention also provides a communication terminal, a control network element S-CSCF and a system, thus, network pressure can be shared effectively, quality of service of the services can be improved, and user experience is increased.

Description

technical field [0001] The present invention relates to an IP Multimedia Subsystem (IMS, IPMultimediaSubsystem), in particular to a service bearing method, a communication terminal, a control network element S-CSCF and a system. Background technique [0002] Today, with the rapid development of communication technology, IP technology and Internet applications across the link layer transmission medium are widely popularized. The single voice communication method has developed into a new multimedia communication method, which more and more meets people's needs for communication development. [0003] IMS (IPMultimediaSubsystem), as an IP multimedia subsystem defined in the 3GPPR5 stage, is a brand-new multimedia service form. It uses the packet domain (PS) as the bearer channel for upper-layer control signaling and media transmission, and introduces the Session Initiation Protocol (SIP, SessionInitiationProtocol), as a service control protocol, uses the characteristics of SIP's...

AI Technical Summary

Problems solved by technology

However, for a single service, the quality of service Qos that can be provided by VoLTE or VoWiFi bearer is limited. If a single service is shared through VoLTE or VoWiFi access network, if the VoLTE or VoWiFi access network cannot meet the service requirements demand, then it will not be able to provide better Qos and reduce user experience

For example, when a current user need

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