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Energy Efficient Protocol Based on Orient Constraint Factor in UWASNs

UWASNs are deployed in environments of sea and shallow water, which are composed of many nodes that communicate through acoustic wave. The preliminary problem in UWASNs different with on land WSNs is the severe demand of delay time constrain. It becomes a crucial problem that how to reduce unnecessary path that waste time. In this proposed paper, we present an energy efficient protocol with low delay time. Orient constraint factor is a constitute element of this proposed protocol, which instructs node how to select the next hop from neighbor nodes. The orient constrain factor is composed of the distances of source node, neighbor nodes and destination node (commonly pointed to sink node). Simulations show that this protocol can efficiently reduce the delay time and hold a high level of energy efficient.