Improved wireless ad hoc network multi-link routing method

Abstract

The invention discloses an improved multi-link routing method for a wireless ad hoc network. The method comprises the following steps of: 1) arranging a route initialization module, a route information processing module, a route adding module, a route information updating module, a timeliness checking module, a link monitoring module, a link switching module and a route information broadcasting module in each node of the wireless ad hoc network; 2) initializing a local routing table, inputting the current node information into the local routing table and broadcasting, and checking whether the routing is outdated; (3) extracting a source node and a destination node from the routing information sent by the neighbor nodes, finding out N routes with the shortest distances from the source node to the destination node, sorting the routes according to the distances, selecting an optimal route as a main route, and taking the rest N-1 routes as standby routes; then updating the routing table information and broadcasting the routing information; and 4) when the packet loss number of the node reaches a preset upper limit, finding out one route from the standby routes to perform link switching.

Description

Technical field [0001] The present invention relates to the field of wireless communication technologies, and more particularly to an improved ad-hoc network multi-link routing method based on a Bellman-Ford algorithm. Background technique [0002] Wireless Self-Organization Network (Ad-Hoc Network) has the characteristics of centered and self-organizing, and the nodes in the network establishes a connection with other nodes. Therefore, the focus of data transmission in the Ad-Hoc network is to find available and reliable transmission links between the source node and the cascading node. For this routing problem, the currently agreement and algorithm have roughly the following. Several categories: [0003] Traditional routing protocol: AODV protocol is a typical protocol in the Ad-Hoc network, and this protocol is characterized by the on-demand generation route. The protocol is simple and easy to implement, but when the topology change or channel state changes in the network, the...

AI Technical Summary

Problems solved by technology

[0006] The communication quality of the Ad-hoc network is greatly affected by the wireless channel conditions. The sudden change of the channel quality will cause the original effective link to fail, and the data transmission will be interrupted, especially in the outdoor or wild scene, where the interference factors in the environment are more complex and Unpredictable, leading to poor channel parameter stability

In addition, the nodes of the Ad-hoc network are mobile, so the topology of the network may change greatly in a short period of time.

These problems have brought great challenges to the reliable communication of Ad-hoc network

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