Enhancing the sensor network lifetime by topology control and sleep-scheduling

Topology control based Duty-Cycling is an efficiency approach that can enhance the sensor network lifetime. In this paper, we propose a Group-based Scheduling Protocol (GSP) for wireless sensor networks which exploits the network density and divides the nodes into groups and only one node in each group remains active. GSP identifies equivalent nodes in terms of communication with a low communication overhead and then schedules nodes based on this equivalence. The simulation results illustrate that GSP outperforms some other existing algorithms in terms of connectivity guarantee and energy conservation.