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时间同步是无线躯体传感器网络(WBSN)的一项支撑技术。文章针对WBSN能源有限的问题,提出了一种改进的时间同步算法。该算法结合基准节点单向广播机制和成对双向消息传递机制,在保证一定同步精度的前提下,减少消息传递次数,降低通信开销,达到了低能耗的要求。最后进行仿真验证了算法性能。
Time synchronization is a supportive technology for wireless body sensor networks (WBSN). Aiming at the limited energy of WBSN, this paper proposes an improved time synchronization algorithm. Combined with the unidirectional broadcast mechanism of the reference node and the bidirectional two-way message delivery mechanism, this algorithm reduces the number of message transmissions and the communication overhead under the premise of guaranteeing a certain synchronization accuracy, which meets the requirements of low energy consumption. Finally, the simulation verifies the performance of the algorithm.