Scale-Free Wireless Sensor Networks

K.B. Chia, W. Su, and T.T. Ha (USA)


Wireless Sensor Networks, Scale Free, Resilient, Scalable.


The resilience of wireless sensor networks is investigated. A key concept is that scale-free network principles can be adapted to artificially create resilient wireless sensor net works. As scale-free networks are known to be resilient to errors but vulnerable to attack, a strategy using ”cold-start” diversity is proposed to reduce the vulnerability to attacks. The IEEE 802.15.4 MAC and ZigBee protocols are investi gated for their ability to form resilient clusters. Simulation of the physical and media access control layers using ns-2 is carried out to validate key concepts and approach.

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