Energy-efficient, Flow-specific Medium Access using Preamble Sampling

Authors

T. Owens Walker III, Naval Postgraduate School, Monterey, California, USAFollow
Murali Tummala, Naval Postgraduate School, Monterey, California, USAFollow
John McEachen, Naval Postgraduate School, Monterey, California, USAFollow

Date of this Version

9-30-2009

Comments

Published in 3rd International Conference on Signal Processing and Communication Systems Omaha, Nebraska, 28-30 September 2009.

Abstract

Current wireless sensor network applications face challenging power constraints that demand low duty cycles. In this paper, we propose an energy-efficient, flow-specific medium access scheme that is capable of achieving low duty cycles while taking advantage of the performance improvements available through a flow-specific medium access approach. The scheme is based on an adaptive sleep and wake cycle that responds to changes in both contention and non-contention traffic loads through the use of preamble sampling. A preamble sampling probability parameter is introduced to manage the trade-off between energy efficiency and network throughput and delay performance. A performance analysis is conducted and verified through simulation.