A Wireless Sensor Network MAC Protocol Based on the Ladder Pattern Wakeup Scheduling
Chunmei Gui · Computer Engineering and Science · 2009
How to provide energy-efficient communication without necessarily sacrificing application-specific latency performance is a key challenge confronting wireless sensor network MAC protocols.In this paper,LP-MAC,a MAC protocol based on ladder pattern wakeup scheduling is proposed.By arranging the nodes in a multi-hop path to forward data continuously,the wakeup delay is eliminated;by the conflict avoidance scheme and the temporary wakeup mechanism based on link counters,the conflicts between the sibling nodes are decreased and the sleeping time of nodes is increased,which further improves the protocol's energy efficiency.The theoretical analysis and simulation results show that,the LP-MAC protocol has both low-energy consumption and stable low end-to-end delay.