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Method and system for negotiating media and method for transmitting media description information

A technology for media description and description information, which is applied in the multimedia field and can solve the problem that the media negotiation of the mixed media components does not provide a complete solution.

Inactive Publication Date: 2008-08-20
HUAWEI TECH CO LTD
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  • Summary
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  • Description
  • Claims
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Problems solved by technology

[0079] As can be seen from the above, the prior art has provided a SDP interaction mechanism, which provides a negotiation method for various media formats registered with the Multipurpose Internet Mail Extension (MIME) type, but for multiple media Negotiation of media with mixed ingredients does not give a complete solution

Method used

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  • Method and system for negotiating media and method for transmitting media description information
  • Method and system for negotiating media and method for transmitting media description information
  • Method and system for negotiating media and method for transmitting media description information

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Embodiment Construction

[0097] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the present invention will be described in detail below in conjunction with specific embodiments.

[0098] In a multimedia session, the two parties need to negotiate on whether to use the mixed media of multiple media components as the transmission medium. In the embodiment of the present invention, the negotiation process is performed by using the SDP description and the offer / response mechanism of the SDP.

[0099] Such asfigure 1 As shown, the method for media negotiation provided by the embodiment of the present invention mainly includes the following steps:

[0100] Step 101: The SDP provider describes the media in which multiple media components are mixed, and generates an SDP offer containing the description information;

[0101] Step 102: The SDP provider sends the SDP offer to the SDP responder

[0102] Step 103: The SDP responder retur...

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Abstract

The present invention provides method and system executing negotiation for medium, method for transmitting medium descriptor and session describing protocol (SDP) provider, SDP provider executing description for multiple medium ingredient mixed medium, and transmitting SDP offer including the descriptor (SDP offer) to SDP responder, SDP responder returning SDP answer which reflects SDP provider terminal equipment medium ability to SDP provider according to the SDP offer, if the negotiation does not success or defeat, SDP provider re-generates SDP offer according to the SDP answer, and mentioned above steps are circled until negotiation success or defeat. In the process of negotiation and description, multiple medium ingredient mixed medium is negotiated easily to realize by describing characterize information of multiple medium ingredient mixed and internal medium component.

Description

technical field [0001] The invention relates to multimedia technology, in particular to a method and system for negotiating media and a method for sending media description information. Background technique [0002] With the continuous development of network technology and the continuous improvement of people's living needs, multimedia technology has become an important part of communication technology. The following briefly introduces some related protocols and technologies involved in the existing multimedia technology. [0003] Real-time Transport Protocol (RTP) is one of the multimedia communication protocols formulated by the Internet Engineering Task Force (IETF), defined in Request for Comments (RFC) 1889, usually used in conjunction with the RTP Control Protocol (RTCP), for real-time audio, video, etc. Data provides an end-to-end transfer function. Audio and video data blocks generated by multimedia applications are encapsulated in RTP packets, each RTP packet is e...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/56
CPCH04L65/1069H04L69/24
Inventor 朱文明王丰
Owner HUAWEI TECH CO LTD
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