REA-MAC: A low latency routing-enhanced asynchronous duty-cycle MAC protocol for wireless sensor networks
来源期刊：中南大学学报(英文版)2013年第3期
论文作者：TANG Hong-wei(唐宏伟) CAO Jian-nong(曹建农) SUN Cai-xia(孙彩霞) LU Kai(卢凯)
文章页码：678 - 687
Key words：wireless sensor networks; asynchronous; duty-cycle; media access control protocol; idle listening; low latency
Abstract: 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.
TANG Hong-wei(唐宏伟)1, CAO Jian-nong(曹建农)2, SUN Cai-xia(孙彩霞)1, LU Kai(卢凯)1
(1. College of Computer Science, National University of Defense Technology, Changsha 410073, China;
2. Department of Computing, Hong Kong Polytechnic University, Hong Kong, China)
Abstract: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.
Key words:wireless sensor networks; asynchronous; duty-cycle; media access control protocol; idle listening; low latency
