Hardware design experiences in ZebraNet
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Wireless sensor network survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Routing in Ad Hoc Networks of Mobile Hosts
WMCSA '94 Proceedings of the 1994 First Workshop on Mobile Computing Systems and Applications
Statistical en-route filtering of injected false data in sensor networks
IEEE Journal on Selected Areas in Communications
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Frequency-hopping (FH) is a well-known spread-spectrum method of transmitting radio signals by hopping frequency channels along a predefined hopping sequence known to both transmitter and receiver. Although FH is resistant to jamming by external malicious nodes which have no knowledge of the sequence, it is of no effect against attacks by internal compromised nodes which know the sequence. In this article, we propose a secure scheme for creating the hopping sequence for mobile wireless sensor networks. The proposed scheme is based on the idea of a statistical en-route filtering (SEF). SEF exploits collective decision making by multiple detecting nodes in the dense deployment of large sensor networks. We demonstrate the effectiveness of our scheme thorough simulations.