Design of time synchronization algorithm in wireless sensor network based on ZigBee

This paper introduced a time synchronization algorithm on the basis of HRTS(Hierarchy Referencing Time Synchronization Protocol).This algorithm mainly introduced a level-set process and point-to-point time synchronization to guarantee the time synchronization of the whole network.The results showed that in wireless sensor network based on ZigBee protocol the synchronization error between the codes is about 10ms and the normal applications can be satisfied.