An energy-efficient mobile routing algorithm in wireless sensor network

In order to extend the lifetime of wireless sensor network and avoid network premature invalidation caused by local emergency, this paper proposes an energy-efficient mobile routing algorithm (MREEMRP). The network based on the MREEMRP is divided into several square virtual grids to reduce energy consumption, and the cluster head is selected according to the residual energy of nodes and the weighted sum of coordinate distance between a node and the cluster barycenter. The sink node receives data from the cluster head by controllable moving scheduling strategy, and relay nodes with unlimited energy are introduces to extend the network lifetime, and serve as information transmitting large area. On this basis, the simulation is carried out and the results are compared with the MSEERP algorithm without relay nodes. The analysis shows that the proposed algorithm is superior to the MSEERP algorithm from the aspects of total energy consumption of the network, active nodes number and data amount that the gathering node receives. © 2015 SERSC.