RTP (Real-time Transport Protocol)-based stream media transmission method in 3G network

A streaming media transmission, 3G network technology, applied in transmission systems, electrical components, etc., to reduce the possibility of network packet loss, ensure real-time performance, and ensure sequence integrity.

Inactive Publication Date: 2013-02-13
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The client can receive media data from the media server, but cannot directly configure the media server

Method used

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  • RTP (Real-time Transport Protocol)-based stream media transmission method in 3G network
  • RTP (Real-time Transport Protocol)-based stream media transmission method in 3G network

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Experimental program
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Embodiment Construction

[0035] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0036] Such as figure 1 As shown, it is a schematic diagram of the transmission framework of the existing 3G network, and the client interacts with the server through the 3G network to realize data exchange and communication.

[0037] Such as figure 2 As shown, the server generates two UDP channels between the client and the server after receiving the request, which are RTP channel and RTCP channel.

[0038] By adopting a multi-thread mechanism, where the server has 3 main threads:

[0039] The first thread: Generate and transmit RTP packets, RTP packets are encapsulated into UDP packets and sent to the client after multiplexing.

[0040] The second thread: periodically send RTCP packets.

[0041] The third thread: monitor the RTCP packets sent by the client.

[0042] The client has 3 main threads:

[0043] The first thread: constantly recei...

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Abstract

The invention discloses a RTP (Real-time Transport Protocol)-based stream media transmission method in a 3G (The 3rd Generation Telecommunication) network. After receiving a request, a server generates two UDP (User Datagram Protocol) channels including a RTP channel and a RTCP (Real-time Transport Control Protocol) channel between a client and the server, and then the transmission of a stream media on the 3G network can be realized by a multithreading mechanism, wherein the server comprises the following 3 threads of: 1. generating and transmitting RTP packets, packing the RTP packets in a UDP packet, and transmitting to a client by multiplexing; 2. periodically transmitting RTCP packets; and 3. monitoring the RTCP packets transmitted from the client, wherein the client also has 3 corresponding threads. After receiving the RTP packets, a receiving end firstly analyzes RTP packet headers, judges the validity of information about versions, lengths and load types, updates RTP information of a buffer region, carries out information source synchronization according to a RTP time stamp, packet serial numbers and the like, clears up the RTP packet numbers and reconfigures video frames; and finally, the decoding is carried out according to load type identifiers, and data are placed into a buffer memory to be decoded and output by a decoder.

Description

technical field [0001] The invention relates to an RTP-based streaming media transmission method in a 3G network, and belongs to the technical field of multimedia data transmission in mobile communication networks. Background technique [0002] With the development of the third-generation mobile communication network technology, the enhancement of mobile terminal functions and the enrichment of mobile business application content, various wireless applications will greatly enrich people's daily work and life. In recent years, from SMS to MMS, MMS, MMS, MCR, mobile games, etc., the types of mobile value-added services have become more and more abundant. But generally speaking, the current mobile communication network mainly provides static content based on images and text. With the development of 3G network mobile data services, especially the improvement of network transmission quality and bandwidth, it provides a strong technical support for the development of mobile strea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
Inventor 许峰周文欢马鸿旭
Owner HOHAI UNIV
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