Routing Protocol Based On Load-Balanced Wireless Mesh Network

Wireless mesh network is evolved by the Ad Hoc network which is relatively static. Wireless mesh network is a self-organizing, self-configuring and self-healing network that can automatically organize the various nodes in the establishment of an Ad Hoc network. Routing is the core technology of wireless mesh network.This paper introduces the present development of the wireless mesh network structure, the key technologies, features and applications; Second, it analyzes the designing ideas of existing wireless mesh routing algorithm and the features and technical principles of the current variety of mesh networks, to fully exploit the strengths and weaknesses of existing routing protocols; third, on the full study of the shortcomings of the existing protocol, it is realized that the traditional Ad hoc routing protocol is not suitable for the Mesh, and the existing routing protocol has some demerits in aspects of load balancing and the economy of network resources. Therefore, an improved protocol based on the DSR protocol-Load Balancing Dynamic Source Routing Protocol is proposed. The protocol, adapting the total weight routing criterion which reflects the real-time link state, mainly collects the real-time information of the node bandwidth which is economical in network resources and the buffer saturation as the parameters of calculation of the routing criterion. To obtain better dynamic load balancing function and to enhance the utilization of internet resources, this protocol adapts:the multi-path routing algorithm, assigning tasks according to the size of the path weights in the multiple-path to the aimed node; the real-time monitoring and timely adjustment of link state. When the change of the link is significant, the node voluntarily notifies the redundant source node to change into or use mostly other links. And the protocol proposes a timely backoff algorithm which would solve the problem of the internet fairness between the single-path and the multiple-path and avoid the node congestion. Finally, it simulates the LBDSRM Protocol, the DSR Protocol and the multi-path extended MSR Protocol based on the DSR and analyzes the results comparatively. Experimental results show that thought the several means above, the reasonable diversion of internet data is realized effectively, improved dynamic load balancing is achieved, and the utilization of the internet resources is enhanced. All the performance, especially the ability of the load balancing of LBDSRM, is superior to the DSR before improvement in the environment of wireless mesh network.