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An Energy-Efficient MAC Protocol for Delay-Sensitive Wireless Sensor Networks

  • Changsu Suh
  • Deepesh Man Shrestha
  • Young-Bae Ko
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4097)

Abstract

In this paper, we propose a new medium access control protocol for wireless sensor networks, named LE-MAC (Latency and Energy aware MAC) that aims to minimize data delivery latency as well as energy consumption. To achieve both goals, we exploit a physical carrier sensing feature in CSMA/CA and combine it with a cross-layer technique. When nodes that are in routing path between source and sink become aware of the traffic based on the carrier signal, they wakeup once more during the sleep period for transmitting data over multiple hops. We evaluated the proposed scheme compared with S-MAC on the ns-2 simulator. The results show that our scheme outperforms S-MAC protocols in balancing the need of low latency and energy consumption.

Keywords

Wireless Sensor Network Medium Access Control Duty Cycle Data Packet Total Energy Consumption 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Changsu Suh
    • 1
  • Deepesh Man Shrestha
    • 1
  • Young-Bae Ko
    • 1
  1. 1.R & D Departments, Hanback Electronics Company, Republic of Korea, College of Information & CommunicationAjou UniversityRepublic of Korea

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