Resilient Data Collection in Mobile-assisted Wireless Sensor Networks
نویسندگان
چکیده
Mobility facilitates efficient data collection protocols improving the performance, scalability and life-time of wireless sensor networks. We propose a simple, yet effective and scalable method for resilient data collection in mobile-assisted wireless sensor networks. The mobile element covers an area using periodic long-range broadcast messages. Upon receiving a broadcast message, a sensor sends its data to the mobile element using trajectory routing in a multi-hop manner. The mobile element includes sensor acknowledgements in the broadcast using a Bloom filter. If a packet is not received by the mobile element due to an erroneous node along the trajectory, a different trajectory is used to avoid malicious nodes. Simulation results demonstrate that low number of broadcasts is enough to collect data from a large-scale network with over 99% success rate if the system parameters are set properly.
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