A Dynamic Sleep MAC Protocol for Wireless Sensor Networks

摘要：

It has been proved radio sleep can significantly prolong the lifetime of wireless sensor networks; however, sleep causes more multi-hop latency and fewer throughputs under heavy load. This paper proposes a dynamic sleep MAC protocol LD3-MAC for wireless sensor networks, which uses global schedule, stagger sleep and periodic synchronization to achieve sleep coordination. The dynamic listening scheme that employs limited contention and extended listening is proposed to reduce forward delay and collision. In addition, the dynamic duty cycle scheme is used to adjust the regular listening period according to the traffic load, which further improves the space efficiency of channel. LD3-MAC was evaluated through NS-2 simulation; the results show that the scheme reduces energy consumption and latency, and improves deliver ratio under heavy traffic load.

关键词： wireless sensor networks energy efficient medium access control dynamic sleep

作者: Junfeng Shi Yongchang Ma

作者单位: College of Engineering and Technology University of Southwest Chongqing 400716,China

会议类型: 国际会议

会议名称: 2010 IEEE信息与自动化国际会议(ICIA 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 1-6

在线出版日期: 2010-06-20（万方平台首次上网日期，不代表论文的发表时间）