Sift: A MAC protocol for event-driven wireless sensor networks

Kyle Jamieson, Hari Balakrishnan, Y. C. Tay

Research output: Chapter in Book/Report/Conference proceedingConference contribution

140 Scopus citations


Nodes in sensor networks often encounter spatially-correlated contention, where multiple nodes in the same neighborhood all sense an event they need to transmit information about. Furthermore, in many sensor network applications, it is sufficient if a subset of the nodes that observe the same event report it. We show that traditional carrier-sense multiple access (CSMA) protocols for sensor networks do not handle the first constraint adequately, and do not take advantage of the second property, leading to degraded latency as the network scales in size. We present Sift, a medium access control (MAC) protocol for wireless sensor networks designed with the above observations in mind. We show using simulations that as the size of the sensor network scales up to 500 nodes, Sift can offer up to a 7-fold latency reduction compared to other protocols, while maintaining competitive throughput.

Original languageEnglish (US)
Title of host publicationWireless Sensor Networks - Third European Workshop, EWSN 2006, Proceedings
Number of pages16
StatePublished - Jul 7 2006
Externally publishedYes
Event3rd European Workshop on Wireless Sensor Networks, EWSN 2006 - Zurich, Switzerland
Duration: Feb 13 2006Feb 15 2006

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3868 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other3rd European Workshop on Wireless Sensor Networks, EWSN 2006

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • General Computer Science


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