ROUTING OPTIMIZATION FRAMEWORKS FOR MULTIHOP WIRELESS NETWORKS USING CO-OPERATIVE DIVERSITY

Abstract

Wireless sensor network is a network composed of a large number of sensor nodes with limited radio capabilities and one or a few sinks that collect data from sensor nodes. Sensor nodes are powered by small batteries, hence, the energy consumption in operating a WSN should be as low as possible. The wireless sensor network present all sensor nodes generate an equal amount of data packets in a WSN, nodes around a sink have to relay more packets and tend to die earlier than other nodes because the energy consumption of sensor nodes is almost completely dominated by data communication rather than by sensing and processing. Hence, the whole network lifetime can be prolonged by balancing the communication load at heavily loaded nodes around a sink. This problem is called the energy hole problem and is one of the most important issues for WSNs. In this project, the heterogeneity of networks and a fair cooperative routing method is analyzed. To avoid unfair improvement only on certain networks, in this project introduce one or a few shared nodes that can use multiple channels to relay data packetsThe sinks and shared nodes

can communicate with any WSNs node, different WSNs can use cooperative routing with each other since shared nodes allow sensor nodes to forward data from another WSN as the function of interchange points among respective WSN planes.

Keywords__Sensor network, cooperative routing, fairness, heterogeneous environment, load balancing.

Author

NAGINA BANU RESHMA DHANALAKSHMI MANGAYARKARASI S.M.KARPAGAVALLI

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