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Chapter 8
Wakeup Strategies in Wireless Sensor
Networks
Curt Schurgers
Electrical and Computer Engineering Department
curts@ece.ucsd.edu
1 Introduction: The Wakeup Principle
1.1 The Need for Sleep
Low-power operation has been recognized as being one of the crucial design
requirements in sensor networks [1]. Often these networks will be deployed in
environments where no external source of electrical power is available, such
as in outdoor environmental monitoring applications or battlefield scenarios.
Even in indoor scenarios, such as machine or structural health monitoring, it
is often prohibitive to attach power cables to each sensor node, especially if
the network spans tens or even hundreds of devices. In addition, many sensor
network applications require the devices to be unobtrusive, possibly even
implantable, or deployable without extensive infrastructure support.
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