Preserving Source-Location Privacy through Redundant Fog Loop for Wireless Sensor Networks

A redundant fog loop-based scheme is proposed to preserve the source node-location privacy and achieve energy efficiency through two important mechanisms in wireless sensor networks (WSNs). The first mechanism is to create fogs with loop paths. The second mechanism creates fogs in the real source node region as well as many interference fogs in other regions of the network. In addition, the fogs are dynamically changing, and the communication among fogs also forms the loop path. The simulation results show that for medium-scale networks, our scheme can improve the privacy security by 8 fold compared to the phantom routing scheme, whereas the energy efficiency can be improved by 4 fold.