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Video system based on multicast and QoS

A video and intermediate system technology, applied in the field of video systems based on multicast and QoS, can solve the problems of consuming user bandwidth and transmission channel congestion, and achieve the effects of improving utilization, high-efficiency forwarding, and avoiding congestion.

Pending Publication Date: 2021-02-19
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Video programs consume a large amount of user bandwidth and may cause congestion in the transmission channel, so it is urgent to find a way to efficiently send data and save bandwidth

Method used

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  • Video system based on multicast and QoS
  • Video system based on multicast and QoS
  • Video system based on multicast and QoS

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Experimental program
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Effect test

Embodiment

[0027] Currently, video programs are sent through unicast. Unicast means that one user sends and one user receives, which will greatly consume the bandwidth of the backbone transmission channel, such as figure 1 as shown,

[0028] When 1000 users in an enterprise watch a live video program at the same time, the video program requires a bandwidth of 2Mb / s, and the user adopts unicast to receive the video program, the transmission channel must allocate 2Mb / s bandwidth for each user, and the video server to The backbone optical cable of the core switch needs to consume a bandwidth of 2Mb / s*1000=2Gb / s, which will cause network congestion when the network business is busy.

[0029] The emergence of IP multicast technology promptly solves the problem of uncertain number of users in the network. The sender of the multicast information (that is, the multicast source) only sends the information once, and establishes a tree-shaped route for the multicast data packet with the help of th...

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Abstract

The invention provides a video system based on multicast and QoS. The video system comprises a core media node CMS, a core router CR, a convergence router DR, a three-layer switch L3-SW, a video switch IPTV-SW, an intermediate system node HMS and a two-layer switch L2-SW. The method is reasonable in design, multicast transmission is adopted from the video server to the user, because the multicastis copied only when reaching the last bifurcation point, the main optical cable from the video server to the core switch only consumes the bandwidth of 2Mb / s, the utilization rate of a main transmission channel is greatly improved, and the risk of network congestion is avoided.

Description

technical field [0001] The invention mainly relates to the technical field of electronic information and computer, and specifically relates to a video system based on multicast and QoS. Background technique [0002] With the development of science and technology, the network video service integrating Internet, multimedia, communication and other technologies is also developing rapidly. This technology uses a broadband network to transmit data signals, uses a family personal computer as a terminal receiving device, integrates various technologies such as the Internet and multimedia communication, and provides end users with digital TV and Internet services through the Internet network protocol (TCP / IP). A variety of digital media services within. [0003] Network video programs are transmitted in the network through streaming media technology. The application of streaming media technology can compress the image and sound information into streaming media information, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L65/1013H04L65/80H04L65/611
Inventor 陶骏杜敏陈欢
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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