Summary: Koala: Ultra-Low Power Data Retrieval in Wireless Sensor Networks
Razvan Musaloiu-E.
Computer Science Dept.
Johns Hopkins University
razvanm@cs.jhu.edu
Chieh-Jan Mike Liang
Computer Science Dept.
Johns Hopkins University
cliang4@cs.jhu.edu
Andreas Terzis
Computer Science Dept.
Johns Hopkins University
terzis@cs.jhu.edu
Abstract
We present Koala, a reliable data retrieval system de-
signed to operate at permille (.1%) duty cycles, essential
for long term environmental monitoring networks. Koala
achieves these low duty cycles by letting the network's
nodes sleep most of the time and reviving them through an
efficient wake-up strategy whenever the gateway performs a

Source: Amir, Yair - Department of Computer Science, Johns Hopkins University

Collections: Computer Technologies and Information Sciences