Broadcast Time Synchronization Algorithm for Wireless Sensor Networks

A time synchronization algorithm for wireless sensor networks is proposed.Based on packet exchange mechanism,it utilized the broadcasting property of wireless channel and employed piggyback technique to reduce the number of packets necessary for time synchronization.It buffered time information of packets and employed the least-squares linear regression technique to smooth jitter of synchronization error. Simulation results show that single-hop synchronization precision is about57microseconds on Mica 2.Finally,performance is compared with similar algorithms.