Design and Evaluation of an Adaptive and Energy-Efficient MAC Protocol for Wireless Sensor Networks


Prof. Torsten Brown, University of Bern


24 November 2010






Wireless sensor networks must support heterogeneous application requirements in terms of bandwidth, delay and energy-efficiency. Certain applications such as event monitoring might generate strongly varying traffic load. We present an energy-efficient MAC protocol for wireless sensor networks that can adapt to different traffic load. Evaluation of wireless sensor network protocols based on real-world measurements is important in order to prove the operability in real-world settings as well as to provide calibration parameters for large-scale network simulations. We present a single metric that considers various protocol characteristics such as delay, throughput, and energy efficiency and evaluate the protocol using simulations and real-world measurements. For energy consumption, we use dedicated measurement hardware, which is, however, difficult to deploy in out-door test-beds or real-world deployments. We propose to consider software-based energy consumption measurements. We discuss limitations of existing software-based measurement approaches and propose improved schemes to overcome their limitations.


Torsten Braun got his Ph.D. degree from University of Karlsruhe (Germany) in 1993. From 1994 to 1995 he has been a guest scientist at INRIA Sophia-Antipolis (France). From 1995 to 1997 he has been working at the IBM European Networking Centre Heidelberg (Germany) as a project leader and senior consultant. He has been a full professor of Computer Science at the University of Bern (Switzerland) since 1998 and director of the Institute of Computer Science and Applied Mathematics at University of Bern since 2007. He has been member of the SWITCH (Swiss education and research network) board of trustees since 2001.