Dynamic non-average-slot MAC layer protocol for wireless sensor networks

To solve the ineffective power consumption generated by the idle listening, conflict and control expenses in wireless sensor networks MAC layer, a novel MAC method based on the dynamic non-equal distribution slot is studied. According to the network topology and monitoring type, we analyze more about the coverage model of network nodes, Afterwards, the dynamic election mechanism that the node with lowest energy level is turned to sleep equalizes the energy consumption is designed, and a novel allocation algorithm based on the non-average-slot protocol is derived. In order to achieve the same time base among network nodes, a single direction broadcast time synchronization mechanism is raised based on the local time series and recursive least square. In the end, simulation experiments is applied to verify the effectiveness of the protocol, the simulation results indicates that the method is used to bring about a fundamental function for the better in the number of dynamic nodes and the standard of non-average-slot, and can effectively use the network energy to extend the network life-cycle.