Over platform end-to-end PTP protocol stack designing method

A design method and protocol stack technology, applied in the direction of electrical components, transmission systems, etc., can solve the problems that UDP does not provide control module information, does not provide congestion mechanism, etc., and achieves the goal of reducing network overhead, reducing operation complexity, and reducing complexity Effect

Inactive Publication Date: 2005-11-09
ZHEJIANG UNIV
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Problems solved by technology

[0008] To realize the cross-platform RTP / UDP transmission mode, the following problems must be solved: how to unpack in order at the receiving end, while the sending end of the transmission sends packets out of order, because UDP is a connectionless transmission protocol; how to solve network congestion mechanism, so that it can adapt to different network environments, because the UDP protocol does not provide a congestion mechanism; how to obtain effective feedback and module information, because UDP does not provide control module information; how to transmit huge streaming media data on the Internet without Does not cause a lot of bandwidth competition; in order to adapt to embedded handheld devices and wireless transmission, the occupation of various network and computer resources should be minimized

Method used

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  • Over platform end-to-end PTP protocol stack designing method

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Embodiment Construction

[0020] By modifying the RTP packet header format, using relative timestamps instead of absolute timestamps to achieve synchronization, cutting and extending the RTCP protocol, simplifying the SR packets of RTCP packets, and improving the RTCP packet length algorithm and packet loss rate algorithm , so that it can provide more flexible and accurate feedback of the network environment at a certain moment; improve and combine member maintenance and synchronization source maintenance, set five different states of members, delete the synchronization source list, and establish a layer-based member maintenance list, so that The organic combination of member maintenance and synchronization source maintenance provides effective support for the implementation of each RTP algorithm, ensures real-time transmission and necessary reliability, improves member conflict detection, simplifies member maintenance operations, improves back-off mechanism, and prevents network jitter. .

[0021] The...

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Abstract

This invention discloses end-to-end RTP protocol stack design method, which modifies and reduces the RTP protocol standard and applies a simple interface technology to reduce the complexity of the operation. The protocol stack includes three modules: 1, a data packet module, 2, an information packet control module, 3, a membership module processed by a dispatcher to make them suitable for the clear application under mobile environment. This invention improves the RTP protocol greatly to meet the needs of clear wireless transmission.

Description

technical field [0001] The invention relates to a cross-platform end-to-end RTP protocol stack design method. Background technique [0002] With the development of multimedia processing technology, multimedia applications based on streaming media transmission have developed rapidly. At present, many experimental high-speed broadband networks regard the technology and application of video transmission as the key subject of research. Streaming media technology is suitable for various network bandwidth environments (14.4Kbps-10Mbps). Therefore, streaming media is widely used on the Internet, such as real-time video conferencing, multimedia news release, online live broadcast, e-commerce, video on demand, distance education, road monitoring etc. In the broadband environment, streaming media can not only perform one-way streaming, but also provide network interactive services based on interactive technology, such as interactive games, interactive training, 3D animation and so o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
Inventor 卜佳俊陈纯黄笑鹏谭永宝
Owner ZHEJIANG UNIV
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