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Forced node exit method and application layer multicast system

A forced exit, application layer technology, applied in the field of communication, can solve problems such as service interruption, nodes cannot be avoided, and child nodes are not considered

Inactive Publication Date: 2008-11-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. Nodes that are forced to withdraw cannot avoid it;
[0008] 2. The ongoing business of the subnodes of the node that is forced to quit is not interrupted and the quality is degraded as much as possible;
[0021] 2. This switching method requires the node to exit the distribution tree immediately after receiving the forced exit message. It does not consider that the child node MAC may not have switched the parent node, and MA A interrupts the distribution of media streams to MA B. Applications such as meetings will cause service interruption

Method used

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  • Forced node exit method and application layer multicast system
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  • Forced node exit method and application layer multicast system

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Embodiment Construction

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0034] Figure 4 A flow chart of a method for forcing a node to exit according to an embodiment of the present invention is shown, which includes the following steps:

[0035] Step S10, sending an exit message to the parent node and child nodes of the target node;

[0036] Step S20, the child node reselects a new parent node, and sends a success response message after the reselection is successful; and

[0037] Step S30, when receiving success response messages from all child nodes or after timeout, the parent node ends data distribution to the target node.

[0038] In this embodiment, the exit message that requires a node in the application layer multicast topology to exit is sent to its parent node and child nodes at the same time when it is necessary to force a node to exit. Therefore, even if the target node refuses to exit, it...

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Abstract

The invention provides a method which forces the node to quit and is used for forcing the target node in the application layer multicast topology; the method includes the steps that the quit message is sent to the parent node and the child node of the target node; the child node reselects a new parent node and sends a replay message after the reselection is successful; when the successful relay messages of all the child nodes are received or the timeout emerges, the parent node ends the data distribution to the target node; the invention also provides an application layer multicast system. The method which forces the node to quit can avoid the situation that the forcefully-quitted target node refuses to execute the message and improve the data continuity of the child node when the node is forcefully quitted.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, relates to a method for forcing a node (Node) to quit (Kickout) and an application layer multicast system. Background technique [0002] Multicast in the general sense refers to IP multicast, which mainly solves the problem of identifying multiple recipients of the same information through a special multicast address, and the router performs corresponding forwarding and branching according to a specific routing table, and close to the final The recipients are converted into multiple multicast packets for distribution, which can reduce bandwidth waste during transmission and reduce the processing burden of the source server by merging repeated information. [0003] The realization of multicast needs to upgrade the network structure in advance, add multicast function routers, and the system’s support for multicast protocols (such as IGMP, PIM-SM, PIM-DM, etc.) must also be u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L12/16
Inventor 胡新宇韩磊李峰
Owner HUAWEI TECH CO LTD
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