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Multi-routing technology with several independent root nodes based on AODV

A routing and node technology, applied in the field of Ad Hoc node independent multi-routing protocol, can solve problems such as service quality impact, unfavorable network traffic balance end-to-end link service quality, intermediate node congestion, etc.

Inactive Publication Date: 2008-01-16
BEIJING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

However, the standard AODV protocol only maintains a source-to-destination route. When the node increases the sending rate, it is easy to cause local congestion of the intermediate node, thereby reducing the throughput of the entire network and increasing the end-to-end transmission delay.
This is not conducive to network traffic balance and end-to-end link quality of service
When the link is broken due to the movement of the intermediate node during the communication process, the route needs to be re-established, which will also have a great impact on the quality of service

Method used

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  • Multi-routing technology with several independent root nodes based on AODV

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Embodiment Construction

[0017] (1) Expand the encapsulation format of the routing request message RREQ, add the source node neighbor domain, that is, some neighbor nodes of the source node, see Figure 2.

[0018] (2) The source node broadcasts the routing request message RREQ. When the intermediate node receives the routing request message RREQ and judges that the last hop forwarded by it is the source node, it can judge that it is the next hop node of the source node, that is, the root of the tree. . Fill in your own ip address in the extended source node neighbor field.

[0019] (3) When the intermediate node receives the route request message RREQ or the route reply message RREP to determine the reverse route or forward route, if it finds that there is already a route entry to the same destination node, it will send the new route to the same destination node Adds to the routing table rather than overriding updates. In order to prevent the route from being changed implicitly, it is necessary to a...

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Abstract

The invention relates to an improvement on AODV protocol, which gets the TRND_AODV (Tree Root Node Disjoint Ad-Hoc On Demand distance Vector) protocol supporting a plurality of routes. Utilize node root algorithm and simply, rapidly and effectively realize multipath route on demand with independent node in Ad Hoc network. Cross node does not exist between positive routes or between opposite routes, and the problem of route implication change can be solved. The novel route protocol of the invention can realize backup route, support the application of traffic engineering and greatly improve the robustness of Ad Hoc network route and reduce the network congestion degree.

Description

technical field [0001] The invention belongs to a routing protocol in wireless network communication, in particular to an AODV-based Ad Hoc node independent multi-routing protocol. Background technique [0002] Ad Hoc network is a mobile, multi-hop self-organizing wireless network. Due to the continuous joining and exiting of wireless mobile nodes and the change of wireless channels, the network has a dynamic topology. The communication between nodes in the AdHoc network is limited by the wireless transmission range. The communication between the source node and the sink node has to go through multi-hop forwarding, and the access bandwidth, storage capacity, processing speed and battery energy of each intermediate wireless node Both are limited. How to avoid local network congestion of intermediate nodes as much as possible, reduce packet loss rate, and rationally select routes and distribute network traffic to achieve load balancing is an important issue in current resear...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L45/02
CPCH04L45/50H04W84/18H04L45/26H04L45/00H04W40/24
Inventor 武穆清朱颖韦蓉魏宇欣丁炜徐春秀朱新宁张春红易欢冯泽恒
Owner BEIJING UNIV OF POSTS & TELECOMM
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