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REA-MAC:A low latency routing-enhanced asynchronous duty-cycle MAC protocol for wireless sensor networks

REA-MAC:A low latency routing-enhanced asynchronous duty-cycle MAC protocol for wireless sensor networks
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摘要 Many energy efficiency asynchronous duty-cycle MAC(media access control) protocols have been proposed in recent years.However,in these protocols,wireless sensor nodes almost choose their wakeup time randomly during the operational cycle,which results in the packet delivery latency increased significantly on the multiple hops path.To reduce the packet delivery latency on multi-hop path and energy waste of the sender's idle listening,a new low latency routing-enhanced asynchronous duty-cycle MAC protocol was presented,called REA-MAC.In REA-MAC,each sensor node decided when it waked up to send the beacon based on cross-layer routing information.Furthermore,the sender adaptively waked up based on the relationship between the transmission request time and the wakeup time of its next hop node.The simulation results show that REA-MAC reduces delivery latency by 60% compared to RI-MAC and reduces 8.77% power consumption on average.Under heavy traffic,REA-MAC's throughput is 1.48 times of RI-MAC's. Many energy efficiency asynchronous duty-cycle MAC (media access control) protocols have been proposed in recent years. However, in these protocols, wireless sensor nodes almost choose their wakeup time randomly during the operational cycle, which results in the packet delivery latency increased significantly on the multiple hops path. To reduce the packet delivery latency on multi-hop path and energy waste of the sender's idle listening, a new low latency routing-enhanced asynchronous duty-cycle MAC protocol was presented, called REA-MAC. In REA-MAC, each sensor node decided when it waked up to send the beacon based on cross-layer routing information. Furthermore, the sender adaptively waked up based on the relationship between the transmission request time and the wakeup time of its next hop node. The simulation results show that REA-MAC reduces delivery latency by 60% compared to RI-MAC and reduces 8.77% power consumption on average. Under heavy traffic, REA-MAC's throughput is 1.48 times of RI-MAC's.
出处 《Journal of Central South University》 SCIE EI CAS 2013年第3期678-687,共10页 中南大学学报(英文版)
基金 Projects(61103011,61170261) supported by the National Natural Science Foundation of China
关键词 wireless sensor networks ASYNCHRONOUS duty-cycle media access control protocol idle listening low latency 无线传感器网络 MAC协议 低延迟 占空比 异步 路由 传感器节点 介质访问控制
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