A Scheme for Source Location Privacy of Multiple Sources in Wireless Sensor Networks

In Wireless Sensor Network applications involving the monitoring of valuable objects, it is crucial to keep the locations of these objects private in order to protect them from potential adversaries. A number of schemes exist to address this problem, of which only a few of them focus on networks where multiple source nodes can report simultaneously. While those schemes provide a reasonable privacy level, they often suffer from inefficiencies in terms of packet overhead. In this paper, we present a scheme called Multi-Source Location Privacy (MSLP). In MSLP, a node uses two-hop neighbourhood information and broadcast nature of wireless communication to route packets to the sink. We perform simulation experiments of MSLP and compare it with other existing schemes and show that MSLP not only provides better location privacy but also offers better performance in terms of energy and delivery delay by reducing packet overhead.