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An overlay multicast tree reconstruction method, multicast tree node and system

A multicast tree and node technology, applied in the field of multicast communication, can solve the problems of multi-system resources and consumption, achieve the effect of reducing system overhead and avoiding redundant packet traffic

Active Publication Date: 2012-02-08
CHINA NUCLEAR POWER TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in RFM, there are a certain number of repeated packets no matter on the node or on the link, and this processing method needs to consume more system resources

Method used

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  • An overlay multicast tree reconstruction method, multicast tree node and system
  • An overlay multicast tree reconstruction method, multicast tree node and system
  • An overlay multicast tree reconstruction method, multicast tree node and system

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0028] The embodiment of the present invention provides an Overlay multicast tree reconstruction method, and the method in the embodiment of the present invention can be used for reconstruction of a Host-based model, and can also be used for reconstruction of a Proxy-based model. The Host-based or Proxy-based model system can specifically be real-time streaming media systems such as video conferencing, online live broadcast, distance education, and online multimedia advertisements. The nodes in the following methods can be end systems in the Host-based model, or proxy servers in the Proxy-based model.

[0029] figure 2 is a schematic flowchart of the first embodiment of the Overlay multicast tree reconstruction method provided by the embodiment of the present invention, as s...

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Abstract

The embodiment of the invention discloses a method for reconstructing an Overlay multicast tree, a multicast tree node and a multicast tree system, wherein the method comprises the following steps: confirming a standby father node in advance for a node in the Overlay multicast tree; and when the node detects that the father node of the node retreats from the Overlay multicast tree, adopting the standby father node as the father node to add the Overlay multicast tree again. By adopting the invention, the system cost can be greatly reduced and the redundant grouping flow is avoided.

Description

technical field [0001] The invention relates to the field of multicast communication, in particular to an Overlay multicast tree reconstruction method, a multicast tree node and a system. Background technique [0002] Multicast communication refers to the communication mechanism that sends data from one source node to multiple destination nodes. It is the basic communication of many new network applications (such as video conferencing, online live broadcast, distance education, network multimedia advertisement and other real-time streaming media systems) Serve. IP multicast is a traditional multicast method. Efficiency is the biggest advantage of IP multicast. However, if IP multicast networks are to be widely deployed on the Internet, special multicast routers are required to support them. Therefore, the researchers proposed overlapping / covering / application layer multicast (Overlay multicast) to replace IP multicast. The basic idea of ​​this technology is that it does not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/18H04L12/26
Inventor 金杉
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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