Efficient delay-aware data collection in mostly-off wireless sensor networks

摘要: A challenging issue in data collection duty-cycled wireless sensor networks (DC-WSNs) is the trade-off between lifetime and latency. Indeed, duty-cycling has long been a critical mechanism for energy conservation WSNs where nodes switch active dormant states. Moreover, this involves strong sleep latencies leading to severe end-to-end delay degradation. In paper we propose delay-aware routing scheme minimize process already impacted by significant durations of nodes. Most traditional algorithms are based on restricting propagation direction toward sink from source each hop greedily searching furthest neighbor time. our keep same restriction gradually adapt transmission power allowing node select all potential forwarders regardless their distance sink. First, develop (FaST) dynamic ForwArder Selection Technique having packets send must choose forwarder whose next time-slot closest. Besides, combine controlled unicast transmissions with FaST better bound communication while keeping consumption at acceptable values. Through extensive simulations, examine performance design under different configurations show how it outperforms schemes terms delay, load balancing cost.