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Source location privacy (SLP) protection is an emerging research topic inwireless sensor networks (WSNs). Because the source location represents thevaluable information of the target being monitored and tracked, it is of greatpractical significance to achieve a high degree of privacy of the sourcelocation. Although many studies based on phantom nodes have alleviates theprotection of source location privacy to some extent. It is urgent to solve theproblems such as complicate the ac path between nodes, improve the centralizeddistribution of Phantom nodes near the source nodes and reduce the networkcommunication overhead. In this paper, PSSPR routing is proposed as a visableapproach to address SLP issues. We use the coordinates of the center node V todivide sector-domain, which act as important role in generating a new phantomnodes. The phantom nodes perform specified routing policies to ensure that theycan choose various locations. In addition, the directed random route can ensurethat data packets avoid the visible range when they move to the sink node hopby hop. Thus, the source location is protected. Theoretical analysis andsimulation experiments show that this protocol achieves higher security ofsource node location with less communication overhead.

PSSPR: A Source Location Privacy Protection Scheme Based on Sector Phantom Routing in WSNs