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Multicast routing method for Ad Hoc network

A routing and network technology, applied in the field of mobile Ad Hoc network multicast routing, can solve problems such as network congestion and reduce network channel utilization, and achieve the effects of reducing network conflicts, reducing a large number of maintenance messages, and enhancing robustness

Inactive Publication Date: 2009-07-22
BEIJING JIAOTONG UNIV
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Problems solved by technology

When the MAODV multicast routing protocol establishes a multicast tree, if a node in the network wants to join a multicast group, it will randomly send a JOIN RREQ join message by flooding, requesting to join the multicast group; When there are too many nodes joining the multicast group, the request to join information will increase instantly, and the wireless ad hoc network is a channel-limited system, too much routing control information will cause network congestion and greatly reduce the channel utilization of the network

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  • Multicast routing method for Ad Hoc network

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Embodiment Construction

[0063] The invention designs an improved multicast routing algorithm MAODV-MM in combination with the specific characteristics of the wireless mobile ad hoc network. The MAODV-MM routing algorithm is based on the MAODV routing protocol and applies some mesh multicast routing ideas, such as OMDRP, CAMP and other multicast routing protocols, thereby reducing the impact of link repair of the MAODV protocol. At the same time, some broadcast redundant information ignored by the original MAODV multicast routing protocol is utilized, which reduces the sending of link repair messages and enhances the performance of the network.

[0064] The idea of ​​MAODV-MM is: in the multicast group, the multicast shared tree is maintained by the multicast group leader in real time, and the nodes in the scene regularly update the routing table through the Group Hello message. If a node wants to join a multicast group, it selects the shortest path to the multicast group leader in the broadcast messa...

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Abstract

The present invention relates to a multicast routing method of mobile Ad Hoc network, which comprises the steps of information broadcasting of multicast routing, establishing the multicast routing, restoring multicast routing, combining the multicast routing and destroying the multicast routing. In the multicast group, the multicast sharing tree is real-time maintained through multicast group leader, and the nodes in the scene periodically update routing list through Group Hello information. If one node wishes to join the multicast group, a shortest path to the multicast group leader in the broadcast information is selected for transmitting joining request. After the node joints the multicast group, the information is transmitted, forwarded and received on the shortest path in the multicast group. The novel multicast routing method of mobile Ad Hoc network according to the invention has the advantages of easy realization, reduction of information transmission in multicast establishment, reduction of information for maintaining the multicast path, and increased accuracy for transmitting the data package.

Description

technical field [0001] The invention relates to a mobile Ad Hoc network multicast routing method (MAODV-MM routing method), which belongs to the field of wireless communication. Background technique [0002] The main purpose of the MAODV-MM routing method is to provide an easy-to-implement multicast routing algorithm solution for mobile Ad Hoc network products, so the improvement of the routing algorithm is proposed on the basis of the existing physical layer and MAC layer basic architecture , which is different from some existing design ideas of high-performance routing algorithms realized by changing the specific parameters of the physical layer and MAC layer. It needs to consider the complexity of routing algorithms more, optimize the packet delivery rate and network performance consumption and other performance. [0003] A network-based multicast routing protocol transmits data packets through a shared network that contains all paths from the sending node to the receivi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02H04L12/56
Inventor 李旭袁凯惠博
Owner BEIJING JIAOTONG UNIV
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