A prototype low-cost wakeup radio for the 868 MHz band

In many wireless sensor network scenarios, battery-powered nodes must operate for years, which necessitate the need for advanced power management of the radio. In this paper, we pursue the idea of using a second, ultra low-power radio that can be used to trigger a remote interrupt, so that a receiver can fire up its primary radio to engage in efficient high-speed communication with the sender. Wakeup radio avoids the complex bookkeeping associated with energy-efficient MAC protocols, but at the price of additional hardware. We present the first design of a low-cost wakeup radio made out of standard components. Our working prototype implementation operates in the European license-free 868 MHz band, and includes a specialised low-power microcontroller filtering out interference (e.g. GSM signals), which makes it practical for use in many real-world settings.

[1]  David E. Culler,et al.  Versatile low power media access for wireless sensor networks , 2004, SenSys '04.

[2]  Katia Obraczka,et al.  Energy-efficient collision-free medium access control for wireless sensor networks , 2003, SenSys '03.

[3]  Amre El-Hoiydi,et al.  WiseMAC: An Ultra Low Power MAC Protocol for Multi-hop Wireless Sensor Networks , 2004, ALGOSENSORS.

[4]  Paramvir Bahl,et al.  Wake on wireless: an event driven energy saving strategy for battery operated devices , 2002, MobiCom '02.

[5]  Paul J.M. Havinga,et al.  A Lightweight Medium Access Protocol (LMAC) for Wireless Sensor Networks: Reducing Preamble Transmissions and Transceiver State Switches , 2004 .

[6]  Saurabh Ganeriwal,et al.  Optimizing sensor networks in the energy-density-latency design space , 2002 .

[7]  Rudy Lauwereins,et al.  Design, Automation, and Test in Europe , 2008 .

[8]  John S. Heidemann,et al.  Ultra-low duty cycle MAC with scheduled channel polling , 2006, SenSys '06.

[9]  John A. Stankovic,et al.  Radio-Triggered Wake-Up for Wireless Sensor Networks , 2005, Real-Time Systems.

[10]  Nitin H. Vaidya,et al.  A MAC protocol to reduce sensor network energy consumption using a wakeup radio , 2005, IEEE Transactions on Mobile Computing.

[11]  Prasant Mohapatra,et al.  Medium access control in wireless sensor networks , 2007, Comput. Networks.

[12]  Alberto L. Sangiovanni-Vincentelli,et al.  Design methodology for PicoRadio networks , 2001, Proceedings Design, Automation and Test in Europe. Conference and Exhibition 2001.