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Flow medium data multi-point transmission method

A multi-point transmission and multimedia data technology, which is applied in data exchange details, electrical digital data processing, data exchange through path configuration, etc., can solve the problems that multicast technology has not been promoted, reduce the processing speed of routers, and increase the burden on routers, etc. , to eliminate unnecessary resource consumption, reduce the probability of overall collapse, and improve the effect of application solutions

Inactive Publication Date: 2009-05-20
POLYCOM COMM TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, there are still many limitations in the application of multicast technology
First of all, multicast technology needs the support of routing protocols such as DVMRP, MOSPF, CBT or PIM, but for the sake of security, the routers in practical applications do not open the multicast service; secondly, even if the router opens the multicast service, The protocols they adopt may also be incompatible with each other; in addition, providing multicast support will occupy router resources, thereby increasing the burden on the router, reducing the processing speed of the router, and even causing system crashes in severe cases
Therefore, the application of multicast technology has not been promoted in the wide area network.

Method used

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  • Flow medium data multi-point transmission method

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specific Embodiment approach

[0047] The invention provides a method for multi-point transmission of streaming media data, the method is:

[0048] Connect the source server to the WAN through the corresponding router;

[0049] Connecting the transit proxy server to the wide area network through a corresponding router, and the transit proxy server is connected to the multimedia terminal through a local area network;

[0050] in:

[0051] The source server transmits the multimedia data to the transit proxy server by means of unicast communication;

[0052] The transfer proxy server transmits the multimedia data to the multimedia terminals in the local area network connected to it by means of multicast communication.

[0053] One said source server corresponds to n (n≥1) said transit proxy servers, the value of n is preset, and the addresses of n transit proxy servers are stored in said source server, each transit The address of the source server is stored in the proxy server;

[0054] One said transit pr...

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Abstract

This invention provides a multipoint transmission method for stream media data in which, a source server is conneted with WLAN via a router, an intermediate transit agent server is connected with a WLAN via a corresponding router and the server is connected with multimedia terminals via LAN, among which, said source server adopts a singleplay way to transfer the multimedia data to said intermediate agent server adopting multicast mode to deliver the data to the terminal in the LAN connected with the server to realize multipoint transmission of media data.

Description

technical field [0001] The invention relates to broadband multimedia communication, in particular to video conferencing and video monitoring technology, specifically a method for multi-point transmission of streaming media data. Background technique [0002] The popularity of the Internet and the application of multimedia technology on the Internet urgently require technologies that can transmit media data such as audio, video, and computer animation in real time. Streaming media transmission technology appears under this background. [0003] Most of the current streaming media technologies use the UDP protocol at the transport layer, and UDP transmission can use three communication methods: Unicast, Multicast and Broadcast. [0004] The throughput of multimedia data is very large during network transmission. If end-to-end unicast technology is used for multipoint transmission (such as figure 1 shown), there are many defects. First of all, the server site must always rema...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04L12/16H04N7/15G06F13/00H04Q3/545
Inventor 熊胜峰
Owner POLYCOM COMM TECH BEIJING
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