Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (5): 41-45.doi: 10.1016/S1005-8885(08)60266-6

• Wireless • 上一篇    下一篇

Optimization of listening time of S-MAC for wireless sensor networks

李成,王葵如,张锦龙,赵德馨, LI Wang   

  1. Key Laboratory of Optical Communications and Lightwave Technologies, Ministry of Education,
    Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2008-08-19 修回日期:1900-01-01 出版日期:2009-10-30
  • 通讯作者: 李成

Optimization of listening time of S-MAC for wireless sensor networks

LI Cheng ,WANG Kui-ru, ZHANG Jin-long, ZHAO De-xin, LI Wang   

  1. Key Laboratory of Optical Communications and Lightwave Technologies, Ministry of Education,
    Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2008-08-19 Revised:1900-01-01 Online:2009-10-30
  • Contact: LI Cheng

摘要:

In wireless sensor networks, sensor nodes are usually battery-operated computing and sensing devices, hence operations are limited by the initially equipped batteries, which are hard to be recharged or replaced. In this sense, saving energy consumption becomes significant. As most energy waste is from the always-on wireless interface, S-MAC is suggested to reduce energy consumption by introducing periodic listen/sleep scheme. However, when designing the listening time, S-MAC fails to consider the traffic distribution factor. In this article, an optimization for this scheme is proposed based on the distribution model. Evaluations show that the optimized S-MAC achieves considerable improvement in energy and latency.

关键词:

wireless;sensor;networks,;S-MAC,;traffic;distribution,;energy;waste,;latency

Abstract:

In wireless sensor networks, sensor nodes are usually battery-operated computing and sensing devices, hence operations are limited by the initially equipped batteries, which are hard to be recharged or replaced. In this sense, saving energy consumption becomes significant. As most energy waste is from the always-on wireless interface, S-MAC is suggested to reduce energy consumption by introducing periodic listen/sleep scheme. However, when designing the listening time, S-MAC fails to consider the traffic distribution factor. In this article, an optimization for this scheme is proposed based on the distribution model. Evaluations show that the optimized S-MAC achieves considerable improvement in energy and latency.

Key words:

wireless sensor networks;S-MAC;traffic distribution;energy waste;latency