Node Sensing & Dynamic Discovering Routes for Wireless Sensor Networks

Computer Science – Networking and Internet Architecture

Scientific paper

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IEEE Publication format, International Journal of Computer Science and Information Security, IJCSIS, Vol. 7 No. 3, March 2010,

Scientific paper

The applications of Wireless Sensor Networks (WSN) contain a wide variety of scenarios. In most of them, the network is composed of a significant number of nodes deployed in an extensive area in which not all nodes are directly connected. Then, the data exchange is supported by multihop communications. Routing protocols are in charge of discovering and maintaining the routes in the network. However, the correctness of a particular routing protocol mainly depends on the capabilities of the nodes and on the application requirements. This paper presents a dynamic discover routing method for communication between sensor nodes and a base station in WSN. This method tolerates failures of arbitrary individual nodes in the network (node failure) or a small part of the network (area failure). Each node in the network does only local routing preservation, needs to record only its neighbor nodes' information, and incurs no extra routing overhead during failure free periods. It dynamically discovers new routes when an intermediate node or a small part of the network in the path from a sensor node to a base station fails. In our planned method, every node decides its path based only on local information, such as its parent node and neighbor nodes' routing information. So, it is possible to form a loop in the routing path. We believe that the loop problem in sensor network routing is not as serious as that in the Internet routing or traditional mobile ad-hoc routing. We are trying to find all possible loops and eliminate the loops as far as possible in WSN.

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