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Cluster Tree Based Self Organization of Virtual Sensor Networks

With recent advances enabling the deployment of large-scale collaborative Wireless Sensor Networks, numerous factors point to the need for sensor network deployments where subsets of nodes cooperate on specific tasks or networks supporting multiple applications. Virtual Sensor Networks (VSNs) is a concept to provide such support for the formation, usage, adaptation, and maintenance of subsets of sensors collaborating on a specific task(s). We describe a cluster tree based mechanism to form VSNs, facilitate inter-VSN and intra-VSN communication, and perform other VSN support functions. Simulation based results are used to evaluate its performance. The results indicate that cluster-tree based approach is significantly more efficient and reliable compared to random-routing based protocols.