Balanced energy using uneven transmission schemes to prolong the lifetime of WSN
Jing Hong Guo, Caixia Zhang, Yong Chen, Fei Wang · 2016
Prolonging lifetime is an important issue in wireless sensor networks. When the sink is stationary in the network, the nodes close to the sink are bottleneck nodes since they relay more traffic than the other nodes. In this paper, we focus on balancing energy to prolong the networks lifetime. To protect the nodes around the sink, an uneven transmission policy is investigated. Moreover, by considering the distance to the sink and the residual energy of each node together, we could use opportunistic routing theory to achieve energy efficiency. Then an energy balancing algorithm via uneven transmission schemes and opportunistic routing theory (EB-UTOR) is proposed. Hence, the energy efficiency can be attained by extending the lifetime of the nodes with relative low residual energy. Furthermore, simulation results are provided to demonstrate the effectiveness of the EB-UTOR algorithm.