Po^2V Network Layer Position Verification in Multi-HopWireless Networks
WOWMOM '06 Proceedings of the 2006 International Symposium on on World of Wireless, Mobile and Multimedia Networks
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IEEE Transactions on Dependable and Secure Computing
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Mobility '08 Proceedings of the International Conference on Mobile Technology, Applications, and Systems
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MSN'07 Proceedings of the 3rd international conference on Mobile ad-hoc and sensor networks
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NPSEC'05 Proceedings of the First international conference on Secure network protocols
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Position-based ad hoc routing algorithms have proved to have decent performance in delivery ratio andend-to-end delay. Position service is essential for such algorithms. In this paper, a distributed position service system, named VDPS, is proposed and evaluated. In the system, each node has a virtual home region (VHR), which is a geographic area. Nodes residing in a nodeýs VHR will act as its position servers. A node updates its position to the servers, through which other nodes can obtain its position. To reduce the overhead on position management and simplify the operation, in VDPS, a VHR is divided into subregions. A region-based broadcast is used for position update, and a sequential searching is used for position retrieving. Different mechanisms for improving system robustness have been proposed. Mathematical models are built for analyzing system robustness and control overhead. Illustrated results show that VDPS can maintain a high system robustness at a relatively low control overhead.