Method and apparatus for capability negotiation of multimedia

Abstract

The invention provides a method and an apparatus for capability negotiation of a multimedia, belonging to the communication field. The method for capability negotiation of the multimedia is applied to an MONA-MPC (media oriented negotiation acceleration-Media Preconfigured Channels) system and comprises the following steps that: a first terminal creates a first priority PM message according to the self media capacity; the first terminal sends the first PM message to a second terminal and receives a second PM message returned by the second terminal, the second PM message includes the media capacity which is determined by the second terminal according to the priority of the media capacity of the first terminal and used for the communication between the second terminal and the first terminal; and the first terminal determines a media channel for the connection with the second terminal according to the second PM message. According to the method and the apparatus for capability negotiation of the multimedia, the generality of an MPC can be improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a multimedia capability negotiation method and device. Background technique [0002] Videophone is a multimedia communication system that integrates audio and video, so that people are no longer limited to ordinary voice telephone services, and truly realize the dream of hearing their voices and seeing them. With the advent of the 3G era, videophones will be accepted by more and more people. [0003] Most of the 3G video calls are based on the 3G-H.324M video call standard. The normal H.245 call process takes more than 5 to 8 seconds, which is difficult for users to accept. Therefore, a protocol to speed up the H.245 process has emerged MONA (media oriented negotiation acceleration, media-oriented negotiation acceleration) can shorten the call setup time of H.245 to within one second. [0004] There are three technologies in the MONA specification, namely SPC (Signaling Preconfigured ...

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Problems solved by technology

[0004] There are three technologies in the MONA specification, namely SPC (Signaling Preconfigured Channel, signaling preconfigured channel), MPC (Media Preconfigured Channels, media preconfigured channel), ACP (Accelerated Connection Procedure, accelerated connection process), among which MPC has the fastest negotiation speed , but the existing MPC technology has the following disadvantages: it cannot express the attributes of media capabilities, so in the case of multiple media capabilities, MPC cannot express the priority of multiple media capabilities, which may lead to negotiation failure and reduce the MPC. Versatility

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