摘要
结合层次传感器网络中基础层的多跳分簇结构、周期性短数据为主、有明显方向性的数据流特点,提出了一种交错的周期倍增同步休眠调度方案。该方案通过让不同层节点运行不同频率的激活/休眠周期可以达到降低时延和降低能耗的目的。将该机制应用到基础层MAC协议中,仿真证明可以保证簇中上下行两个方向的数据都有较低的时延,并且在节能和降低时延的同时拥有较大的吞吐量,能够较好的满足基础层的要求。
A periodic sleep mechanism called cross double-increased synchronization sleep scheduling is proposed for the foundation layer of hierarchy WSN that has a character for multi-hop cluster structure,periodic short data and detection data stream.This sleep scheduling makes nodes in different layer of a cluster run different cycle to sleep and wakeup,which can lower delay of transmission and can save energy at the same time.Simulation analysis shows that this sleep scheduling can reduce the transmission delay of uplink and downlink of cluster,and provide with better throughputs for the foundation layer of hierarchy WSN.
出处
《传感技术学报》
CAS
CSCD
北大核心
2012年第7期980-984,共5页
Chinese Journal of Sensors and Actuators
基金
军内预研课题
关键词
异构无线传感器网络
MAC协议
交错周期倍增同步
休眠调度
hierarchy wireless sensor network
MAC protocol
cross periodic double-increased synchronization
sleep scheduling