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A codec dynamic negotiation method and device

A codec and codec format technology, which is applied in the field of codec dynamic negotiation method and equipment, can solve the problem that the quality of session media cannot be guaranteed, etc.

Active Publication Date: 2016-07-06
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the gateway at both ends of the call does not support the low-rate codec format, the media stream will be interrupted, so that the quality of the session media cannot be guaranteed

Method used

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  • A codec dynamic negotiation method and device
  • A codec dynamic negotiation method and device

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no. 1 example

[0034] Such as figure 1 As shown, a codec dynamic negotiation method, including:

[0035] Step 11, monitor the current network environment to obtain the current available bandwidth;

[0036] Step 12, according to the currently available bandwidth, adjust the first negotiation list including multiple codec formats to obtain the second negotiation list;

[0037] Step 13, monitoring the transmission quality of the currently established media stream;

[0038] Step 14: When the transmission quality of the currently established media stream is lower than the preset transmission quality threshold corresponding to the codec format adopted by the currently established media stream, conduct a negotiation with the peer device according to the second negotiation list The renegotiation process of the codec format.

[0039] In this embodiment, the current available bandwidth is obtained by monitoring the network environment, and according to the currently available bandwidth, a preferred...

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Abstract

The invention provides a dynamic negotiation method and device for coding and decoding. The method comprises monitoring a current network environment to obtain a current available bandwidth; adjusting a first negotiation list including a plurality of coding and decoding formats to obtain a second negotiation list according to the current available bandwidth; monitoring the transmission quality of a current established media steam; renegotiating the coding and encoding format with an opposite terminal device according to the second negotiation list when the transmission quality of the current established media steam is smaller than a preset transmission quality threshold corresponding to the coding and decoding format utilized by the current established media steam. The technical scheme subjects a utilized media coding and decoding algorithm to dynamic negotiation to ensure used session media quality and improve the user experience.

Description

technical field [0001] The invention relates to the field of communication, in particular to a codec dynamic negotiation method and equipment. Background technique [0002] In a voice communication system based on IP and using SIP (SessionInitiationProtocol, Session Initiation Protocol) as control signaling, both parties to a session (between SIP terminals, or between a SIP terminal and a media gateway (MediaGateway, MGW)) Use the SIP message to carry the Session Description Protocol (SessionDescriptionProtocol, SDP) message body to describe the media capability information of the SIP terminal (including the codec algorithm used by voice or video, the IP address and the port used by the media stream, etc.), and provide / Response (offer / answer) realizes the media negotiation with the opposite end. Afterwards, the voice / video codec algorithm for establishing media session interaction adopts the algorithm determined through negotiation. [0003] Media data such as audio / video...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L12/26
Inventor 邓灵莉陆璐彭晋陈艾姜怡
Owner CHINA MOBILE COMM GRP CO LTD