A source-location privacy protection strategy via pseudo normal distribution-based phantom routing in WSNs

Toward resolving the source-location privacy protection issue in Wireless Sensor Networks (WSNs), a Pseudo Normal Distribution-based Phantom Routing (PNDBPR) protocol is proposed in this paper. The proposed protocol is composed of two critical phases: 1) adjusting the value of minimum-hops between a phantom node and its source, and varying the area of the phantom node distribution region at the network deployment stage; 2) generating a set of Gaussian-distributed random real numbers using the Pseudo Random Generator when the source node is transmitting data packets, and calculating the corresponding random walk hops. Theoretical analyses and simulation results show that PNDBPR can dramatically improve the diversity and the dynamicity of the phantom nodes distribution at the expense of a slight increase in communication overheads when compared with the existing PUSBRF (Source Location Privacy Preservation Protocol in Wireless Sensor Network Using Source Based Restricted Flooding) and HBDRW(A hop-based directed random walk) protocols.

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