Mobile base station management using fuzzy logic in wireless sensor networks

Due to resource limitations in wireless sensor networks, prolonging the network lifetime has been of a great interest. The energy of sensor nodes is mostly utilized for data transmission to the base station. In hierarchical routing based on clustering, it is the cluster heads responsibility to do that. Thus, it makes them to deplete their energy much faster. In this paper, a mobile base station approach is used to reduce the energy consumption of cluster heads by enclosing the base station to them while a fuzzy logic is applied to manage the base station move. A Critical Degree is assigned to each cluster head by the fuzzy system based on the input parameters such as, energy, proximity to the base station and size of cluster. Then it makes the base station move toward the cluster head with the most Critical Degree so that it can save much more of its energy. According to the simulation results, the proposed scheme has proved its efficiency in the network lifetime, residual energy of network and load distribution. The proposed scheme also proved to have considerable efficiency in different scenarios.