Method for determining multicast proxy node, multicast method, equipment and system

A proxy node and node technology, applied in the field of multicast technology, can solve the problem of heavy burden on the multicast manager, meet the requirements of multicast security, and avoid the effect of heavy burden

Inactive Publication Date: 2009-05-27
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The disadvantage of this method is that all multicast data must be sent to the multicast manager first, and the route is not necessarily optimal. Moreover, for different multicast source nodes, the multicast manager is the same, and the multicast manager has the same burden. heavier

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  • Method for determining multicast proxy node, multicast method, equipment and system
  • Method for determining multicast proxy node, multicast method, equipment and system

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0016] Embodiment 1 of the present invention describes a method for determining a multicast proxy node. The method includes the following steps:

[0017] 101. The multicast source node sends a multicast proxy node discovery request, and the discovery request carries a destination group identifier. The multicast proxy node discovery request can be sent in a broadcast form.

[0018] 102. After receiving the discovery request, the member nodes of each group determine their routing cost to the multicast source node, and then return it to the multicast source node.

[0019] Before the discovery request reaches each group member node, it usually passes through an intermediate node, which may be a group member node or a non-group member node. After a node receives the...

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Abstract

The invention discloses a method for determining a multicast agent node and a multicasting method. A node of each group member corresponding to a path with minimum cost is selected as a multicast agent node, thereby ensuring that a multicast source node can multicast according to an optimal route. Furthermore, regarding different multicast source nodes, multicast agent nodes can be different, thus burden of the multicast agent node can be scattered, and the problem of heavy burden when the same node is used as a multicast agent node for different multicast source nodes is avoided. The invention also discloses node equipment and a multicast system.

Description

technical field [0001] The invention relates to the communication field, in particular to a multicast technology. Background technique [0002] Multicast, also called multicast, means that one node in the network at that time sends data to multiple destination nodes at the same time. Multicast technology mainly involves multicast routing, group member management and multicast security. Among them, in terms of multicast security, it is necessary to ensure that the multicast data will not be obtained by unauthorized nodes, usually through encryption and decryption. In some existing networks, such as ZigBee networks, multicast source nodes and group member nodes use the network key shared by all network nodes to encrypt and decrypt multicast data, because non-group member nodes also know the network key , so it cannot prevent non-group members from obtaining multicast data. [0003] In other networks, multicast source nodes and group member nodes use group keys to encrypt an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/18H04L12/56H04L9/08
CPCH04L67/2814H04L12/18H04L29/08738H04L67/1002H04L29/08144H04L67/1001H04L67/563
Inventor 刘永俊
Owner HUAWEI TECH CO LTD
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