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Method and apparatus for configuring and managing a robust overlay multicast tree

A device and session manager technology, applied in the direction of data exchange through path configuration, digital transmission system, electrical components, etc., can solve the problem of frequent booking/leaving errors of terminal nodes, inability to consider the physical network environment, etc., and achieve effective service. , simple installation procedure, high quality of service effect

Inactive Publication Date: 2007-10-10
ELECTRONICS & TELECOMM RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In other words, there is a drawback that when establishing a transmission path in an overlay multicast environment, the physical network environment cannot be considered, thereby causing inefficiency, and frequent subscription / leaving of terminal nodes (hosts) can cause frequent errors

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  • Method and apparatus for configuring and managing a robust overlay multicast tree
  • Method and apparatus for configuring and managing a robust overlay multicast tree
  • Method and apparatus for configuring and managing a robust overlay multicast tree

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Embodiment Construction

[0036] Thereafter, exemplary embodiments of the present invention will be described in detail. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various types. Therefore, the embodiment is provided to fully disclose the present invention and fully inform those skilled in the art of the scope of the present invention.

[0037] 1A and 1B illustrate an overlay multicast network environment according to the present invention. Specifically, FIG. 1A is a network environment for transmitting real-time multicast data, and FIG. 1B is a network environment for transmitting multicast data having reliability characteristics such as stock data.

[0038]As shown in Figures 1A and 1B, the inventive overlay multicast network includes multicast agents (MA) 120a, 130a, 120b, and 130b for performing relay transmission of multicast data; Session Managers (SM) 110a and 110b that broadcast the proxy's session reservation request.

[0039]...

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Abstract

Provided is a method and apparatus for configuring and managing an overlay multicast data delivery tree in a transmission network having a SM (session manager) and at least one MA (multicast agent). The method includes the steps of at the MA intending to joining a session, obtaining an active neighbor MA list from the SM; detecting information on QoS infoimation of each neighbor MA in the active neighbor MA list, selecting a MA having the most optimized QoS as a parent MA based on the QoS information of each Neighbor MA in the active neighbor MA list, joining an overlay multicast data communication session through the selected parent MA, periodically receiving HB (heart beat) information having information on a path from a root to the MA and determining whether to perform a parent -switching based on the HB information and parent-switching from the current parent MA to a MA having a better QoS when it is determined to perform the parent-switching.

Description

technical field [0001] The present invention relates to methods and devices for efficiently configuring and managing 1:N data delivery trees in an overlay multicast environment, and more particularly to methods and devices for efficiently configuring and managing 1:N overlay multicast by end hosts or servers Data transfer tree, method and device for providing 1:N group data transfer service. Background technique [0002] Internet transmission methods can be classified into unicast method, broadcast mechanism and multicast mechanism, wherein, in unicast method, one transmitter sends data to another receiver; in broadcast mechanism, one transmitter sends data to All receivers send data; in a multicast mechanism, at least one transmitter each sends data to at least one specific receiver, according to the transmitters and receivers participating in the transmission. [0003] In a multicast mechanism, when a transmitter sends the same data to multiple receivers at the same time,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28
CPCH04L67/26H04L41/0823H04L67/322H04L12/185H04L12/1877H04L67/61H04L67/55H04L12/28
Inventor 朴珠永金恩淑权义莲姜信角郑玉朝
Owner ELECTRONICS & TELECOMM RES INST
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