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Enhancement of coverage in wireless sensor network

Wireless Sensor Network comprises of many sensor nodes which examine the changes in environment. Random and deterministic are the two different strategies used for deployment and enhancement of coverage of sensor nodes in wireless sensor network. Random Deployment strategy deploys nodes in random positions and deterministic deployment strategy deploys nodes in predetermined positions. The random deployment of sensor nodes, in area of interest, might lead to coverage gaps in network. One of the solutions to improve area coverage and connectivity after preliminary deployment is by mobility of sensor nodes. Coverage indicates, how efficiently the region is observed. The performance of various random deployment techniques which are used to enhance coverage of area by nodes is presented in this paper.