Per-Sensor Energy-Saving MAC Protocol Design for Multi-hop Wireless Sensor Networks

Multi-hop wireless sensor networks are mainly designed for environment monitoring. The lifetime of networks depends on the durability of the battery resource sensors, so it is crucial for sensors to efficiently use limited battery resource. The energy expends by sensor nodes in communication makes-up a quantum of their total amount of energy consumption. In existing research, most of the energy-saving MAC protocols reduce energy consumption by putting periodically sensors to sleep mode. Such a regular active/sleep schedule fails to adjust individual sensor node sleep duration according to per-sensor node communication traffic loads, which causes unnecessary idle listening problem and low power-efficiency. In this paper, we