摘要
为满足无线传感器网络低功耗的要求,提出一种双广播域同步的低功耗多跳广播时钟同步算法。该算法基于接收端-接收端同步机制,通过一对已同步节点间对等广播消息,只需多发送一次消息,即可将该对节点的同步范围扩大为两广播域的并集,并采用双根节点的层级结构将算法扩展到全网络范围。OMNeT++仿真结果表明,与MBS算法相比,该算法能有效降低全网络同步需要传输的报文个数。
In order to satisfy the requirement of energy constrained in Wireless Sensor Network（WSN）,an energy-efficient multihop broadcast synchronization algorithm based on double broadcast domain is proposed.The algorithm is based on Receiver-receiver Synchronization（RRS）.Node synchronization range is expanded to two broadcast domains by peer-to-peer broadcasting message in a pair of synchronized nodes which need to broadcast message one more time.A hierarchical structure with two root nodes is built,and the algorithm is extended to the network-wide.OMNeT＋＋ simulation results show that the proposed algorithm requires much less timing messages for network-wide synchronization than MBS algorithm.
出处
《计算机工程》
CAS
CSCD
2013年第1期102-105,共4页
Computer Engineering
基金
国家自然科学基金资助项目(61071088
60962001)
广西无线宽带通信与信号处理重点实验室2011年度主任基金资助项目(11105)
关键词
无线传感器网络
时钟同步
接收端-接收端同步
广播
低功耗
多跳
Wireless Sensor Network（WSN）
clock synchronization
Receiver-receiver Synchronization（RRS）
broadcast
energy-efficient
multihop
