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Wireless sensor networks have attracted increasing attentions considering their potentials for being widely adopted in both emerging civil and military applications. A common practice of sensor networks is to collect data from the sensors and report the data to the sinks or to some pre-defined data rendezvous points via multi-hop communications. Attackers may locate a sink easily by reading the destination field in the packet header or predicting the arrival of a sink at the rendezvous points, which opens up vulnerabilities to location privacy of the sinks. In this paper, the authors propose a random data collection scheme to protect the location privacy of mobile sinks in sensor networks.
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