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Channel switching over method, device and system

A channel switching and live channel technology, applied in the field of communication, can solve the problems of the limitation of the number of concurrent connections in the network scale, the difficulty of supporting a large number of users to switch channels at the same time, increase the investment cost and maintenance cost of IPTV system deployment and operation, and improve the The effect of ubiquity and scalability

Inactive Publication Date: 2010-06-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Considering the large number of users of the IPTV system, the network scale applicable to the existing technical solutions is limited by the number of concurrent connections, the scalability is poor, and it is difficult to support the application requirements of a large number of users switching channels at the same time
In addition, cache equipment adopts a different maintenance system from network equipment, which increases the investment and maintenance costs of IPTV system deployment and operation

Method used

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  • Channel switching over method, device and system
  • Channel switching over method, device and system
  • Channel switching over method, device and system

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] Such as figure 1 As shown, it is a flow chart of a channel switching method in an embodiment of the present invention, including the following steps:

[0033] Step 101, cache the multicast IP packets of each live channel.

[0034] When caching the multicast IP packets carrying the live channel, the cached multicast IP packets can also be marked with GOP and I frame beginning and end to indicate the starting position of the multicast IP packets ...

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Abstract

The implementation of the invention discloses a channel switching over method, device and system. The method includes that: multicast Internet protocol IP message of live broadcast channel is cached; a channel switching over request which is sent by a client for switching over to the live broadcast is received, and the cached multicast IP message is pushed to the client; whether the pushed multicast IP message is synchronous with the real time multicast IP message of the live broadcast channel is judged, if yes, pushing of the cached multicast IP message to the client is stopped, and the real time multicast IP message is sent to the client. The implementation of the invention requires no modification on client and improves the universality and expandability of the channel switching over scheme.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a channel switching method, device and system. Background technique [0002] IPTV (Internet Protocol Television, Internet Protocol Television) is a brand-new technology that utilizes a broadband cable network and integrates various technologies such as the Internet, multimedia, and communication to provide home users with various interactive services including digital services. With the increase in popularity, IPTV has been recognized worldwide. However, IPTV users and operators have been troubled by the long time delay when switching channels. [0003] Factors that lead to channel switching delay include: the time spent leaving the original channel multicast group, the time consumed by joining a new channel multicast group, the time consumed by STB (Set Top Box, set-top box) cache filling data, and the time consumed by waiting for I frames . Among them, the tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04L12/18
CPCH04N21/26616H04L65/4076H04L12/1881H04L29/06326H04N21/2668H04N21/23106H04N21/4383H04L65/1006H04L29/06455H04N21/6405H04N21/6408H04N21/6125H04L29/06197H04N21/2393H04L65/1069H04L65/611H04L65/1104
Inventor 郭凯秦霞郑合文
Owner HUAWEI TECH CO LTD