CU Scholar (University of Colorado Boulder) · 2006 · 21 citations · 10 references
ComputingComputer EngineeringComputer SystemsEnergy ManagementLow-power DesignWireless CommunicationsEmbedded Communication ProtocolsLatency OptimizationSensor NetworksWireless Communication ProtocolsWireless NetworksWireless Sensor NetworksEnergy ConsumptionEnergy-efficient Communication ProtocolsEnergy-efficient Data TransmissionEnergy-efficient ProtocolsEnergy-efficient Wireless Sensor NetworksLow-power Wireless CommunicationSleep SchedulingWireless Sensor Network Protocols
In this paper we present X-MAC, a low power MAC protocol for wireless sensor networks (WSNs). Standard MAC protocols developed for duty-cycled WSNs such as BMAC, which is the default MAC protocol for TinyOS, employ an extended preamble and preamble sampling. While this “low power listening” approach is simple, asynchronous, and energy-efficient, the long preamble introduces excess latency at each hop, is suboptimal in terms of energy consumption, and suffers from excess energy consumption at nontarget receivers. X-MAC proposes solutions to each of these problems by employing a shortened preamble approach that retains the advantages of low power listening, namely low power communication, simplicity and a decoupling of transmitter and receiver sleep schedules. We demonstrate through implementation and evaluation in a wireless sensor testbed that X-MAC’s shortened preamble approach significantly reduces energy usage at both the transmitter and receiver, reduces per-hop latency, and offers additional advantages such as flexible adaptation to both bursty and periodic sensor data sources.
10
Versatile low power media access for wireless sensor networks
Joseph Polastre, Jason Hill, David Culler · 2004 · 3.4K citations
Eugene Shih, Paramvir Bahl, Michael J. Sinclair · 2002 · 588 citations