Hybrid Deployment Schemes for Wireless Sensor Networks
The Wireless Sensor Networks are used in many applications in military, ecological, health related areas, for example, rapid deployment, self-organization, and fault tolerance characteristics of sensor networks make them a very promising technique for military command, control, communications and the targeting systems. Sensor networks are expected to pay an essential role in the upcoming age of pervasive computing. These networks are deployed in harsh and inaccessible environments with the purpose of monitoring their respective surroundings, and generating observed readings. Deployment of nodes in Wireless Sensor Networks (WSNs) is a basic issue to be addressed as it can influence the performance metrics of WSNs connectivity, resilience and scalability requirements. Many deployment schemes have been proposed for wireless sensor networks. We survey six deployment models random, rectangular-grid, square-grid, triangular-grid, hexagonal-grid, grid-group, and proposed two novel schemes for deployment, combinational and hybrid deployment schemes, to show which deployment scheme can be used to increase network connectivity, and scalability requirements with respect to some factor. We present the analytical and simulation-based results of the WSN made up of mica2 motes using the deployment knowledge to motivate the use of these emerging paradigms. WSNs have been simulated with Network Simulator 2.34 for node configuration, sink node configuration, topology creation, and node configured with sensing, temperature and energy capabilities by using mannasim.
KeywordsWireless sensor network Deployment knowledge Connectivity Scalability
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