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Multicasting routing method based on secondary link in wireless distributed network

A distributed network and auxiliary link technology, applied in the field of wireless self-organizing network and multicast routing, can solve the problems of low efficiency, low network forwarding efficiency, and large maintenance costs, so as to improve efficiency, reduce the number of forwarding times, reduce The effect of small forwarding hop count

Active Publication Date: 2015-06-10
XIDIAN UNIV
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Problems solved by technology

[0003] Among the above routing protocols, MAODV and AMRIS based on tree topology are simple in structure and can ensure no loops in routing, but the limitation of tree links makes network forwarding inefficient; grid-based ODMRP has a flexible structure and provides redundant links The DDM protocol supports a stateless mode, so that the nodes in the data forwarding path do not need to maintain the multicast forwarding state. This protocol is generally used in small-scale self-organizing networks. When there are too many nodes, it will production efficiency reduction

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  • Multicasting routing method based on secondary link in wireless distributed network
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  • Multicasting routing method based on secondary link in wireless distributed network

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[0019] Further detailed description will be given below in conjunction with the accompanying drawings.

[0020] The implementation of the present invention assumes that the multicast shared tree has been constructed using the MAODV protocol. The nodes in the multicast shared tree include three types: group leader node, group member node and transit node; in addition, the present invention particularly External nodes applying the multicast shared tree are used as auxiliary nodes, and these auxiliary nodes are only used for forwarding multicast packets.

[0021] The multicast routing table structure that the present invention uses is as table 1:

[0022] Table 1 Multicast routing table

[0023]

[0024] Among them, M1 represents the multicast to which the node belongs, M2 represents the multicast that the node can forward as an auxiliary node, and Null represents that the content of this part is empty.

[0025] refer to figure 1 , the implementation steps of the present in...

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Abstract

The invention discloses a multicasting routing method based on a secondary link in a wireless distributed network. The problem that the data transmission efficiency of the existing wireless multicasting routing protocol based on a tree topology is low is solved. The multicasting routing method based on the secondary link in the wireless distributed network comprises the following steps of firstly, establishing the secondary link by using neighbor nodes and multicasting tree external nodes and refreshing a multicasting routing list; secondly, finding out the multicasting routing list and a neighbor node list when receiving a multicasting report and judging whether the multicasting report meets forwarding conditions or not; and finally, forwarding the multicasting report by using the original link and the secondary link. By the multicasting routing method, the forwarding frequency and the forwarding hop count of the multicasting report can be reduced, the efficiency of the multicasting report which covers all group members is improved, and the multicasting routing method can be used for a wireless self-organized network.

Description

Technical field: [0001] The invention belongs to the technical field of communication, and in particular relates to a multicast routing method, which can be used in wireless ad hoc networks. technical background: [0002] Wireless self-organizing network is a complex distributed network system, which is widely used in military and civilian fields such as military command and emergency rescue due to its advantages of self-organization, no need for fixed infrastructure, node mobility and good invulnerability. . Multicast, as a point-to-multipoint or multipoint-to-multipoint communication method, has high packet sending and propagation efficiency. Since the applications of wireless ad hoc networks often require support for multicast services, it is particularly important to study multicast routing protocols for wireless ad hoc networks. In recent years, a series of multicast routing protocols for wireless ad hoc networks have been proposed at home and abroad, such as tree-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02
CPCH04L45/026H04L49/201H04W40/248H04W84/18
Inventor 史琰盛敏孙大江张琰程冬水张强刘渊
Owner XIDIAN UNIV
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