Latency-aware and energy efficiency tradeoffs for wireless sensor networks

Performance evaluation is one of the most important research topics for the wireless sensor networks (WSN). Latency-aware and energy efficiency are two important parameters to evaluate the networks quality. In order to meet different performance requirements of the service, we classify the packets into high priority and low priority. We consider the latency and energy tradeoffs in WSN. The latency of the high priority packets is small but the network cost more energy. The latency of the packets of low priority packets is large but the network cost less energy. We solve this problem by transmitting redundant packets in the WSN. We assume that the network has a cell-partitioned structure, and sensor moves according to one-step Markov path model with constant speed. Simulation shows that the scheduling algorithm with/without redundancy can realize the latency/energy tradeoffs in WSN.