摘要
PW-MAC协议中发送者通过预测接收者的醒来时间来最小化传感器节点的能量消耗,但在无线传感器网络中,PW-MAC协议不能适应大幅流量的变化。为此,提出一种动态调整传感器节点占空比的MAC协议,该协议采用传感器的占空比,根据流量的变化进行动态调整。仿真结果证明,与PW-MAC协议相比,该协议数据包传输延时减少30%,数据包投递率提高35%。
This paper researches a new energy-efficient MAC protocol which is based on asynchronous duty cycling. PredictiveWakeup MAC（PW-MAC） minimizes sensor node energy consumption by enabling senders to predict receiver＇s wakeup times.However, PW-MAC protocol performs poorly in the dramatically changing traffic Wireless Sensor Network（WSN）. Based on this problem, the paper proposes a Adaptive Duty Cycle MAC（ADC MAC） protocol that dynamically adjusts the node＇s duty cycle based on the changing traffic. Simulation results show that ADC MAC reduces the packet transmission delay by 30% and increases the packet successful delivery ratio by 35% compared with PW-MAC.
出处
《计算机工程》
CAS
CSCD
2013年第3期93-98,共6页
Computer Engineering
基金
山西省青年基金资助项目(2010021016-3)
山西省科技攻关计划基金资助项目(20090322004)
关键词
无线传感器网络
占空比
MAC协议
动态流量
能量效率
传输延时
Wireless Sensor Network（WSN）
duty cycle
MAC protocol
dynamic traffic
energy efficiency
transmission delay
