Hybrid multi-hop/single-hop opportunistic transmission of WSNs

In this paper, two hybrid multi-hop/single-hop opportunistic transmission strategies for lifetime extension of WSNs are proposed. To prolong the network lifetime, a systematic model that contains a network distribution block, a routing algorithm block, a traffic pattern block and an optimal policy block is presented to determine the optimal transmission probability of each node. With the global routing paths, two optimization strategies in the optimal policy block are proposed by minimizing the overall power consumption or minimizing the maximum power consumption of nodes. Computer simulations show that the second strategy can achieve almost triple network lifetime extension, as compared to the first strategy.