Tactics for providing location privacy against global adversaries in wireless sensor networks

The unprotected surroundings of a sensor network makes relatively easy for an adversary to eavesdrop the network. Even though there is wide range of protocols for providing content privacy, the contextual information remains exposed. So adversary will use this contextual information to perform attack on source node or sink node. The existing methods for location privacy protect the network only against a local eavesdropper. In this backdrop to provide location privacy for source node intervallic gathering and source imitation methods are proposed. Also for preventing sink location privacy sink imitation and backbone flooding methods are proposed. These proposed methods provide location privacy against global adversaries.