Department of Computer Science
University of California, Los Angeles
Los Angeles, CA, 90095
Date: April 10, 2001
Our proposed work centers around the development of new time synchronization methods, their characterization according to metrics relevant to wireless sensor networks, and a proof-of-concept implementation of an application that makes use of our synchronization primitives. In this proposal, we first describe a number of metrics that we have found useful for the characterization of time synchronization services. Using these metrics, we describe existing services, and compare them to the synchronization requirements of future sensor networks. We also present an implementation of our own low-power synchronization scheme, post-facto synchronization, and describe an experiment that characterizes its performance for creating short-lived and localized but high-precision synchronization using very little energy. Finally, we describe our work plan.