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DRAG: A Priority-Guaranteed Routing for Sensor Networks with Low Duty Cycles
Guodong Sun and Bin Xu

It is a new challenge to provide priority-based delivery in low duty-cycled sensor networks where there are not always-awake communication paths and the wireless links are very time-varying and unreliable. In this paper, we propose a Dynamic Routing Algorithm for priority Guarantee (called DRAG) in low duty-cycled sensor networks. Both schemes of dynamic forwarding decision making and priority-based schedule are used in DRAG to achieve priority guarantee in low duty-cycled sensor networks.We evaluate DRAG via extensive simulations and the results show that DRAG can achieve good performance in delivery ratio and network delay.

Keywords: low duty-cycled sensor network, priority guarantee, routing algorithm

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