Spatial correlation-based collaborative medium access control in wireless sensor networks

Mehmet C. Vuran, Ian F. Akyildiz

Research output: Contribution to journalArticlepeer-review

Abstract

Wireless Sensor Networks (WSN) are mainly characterized by dense deployment of sensor nodes which collectively transmit information about sensed events to the sink. Due to the spatial correlation between sensor nodes subject to observed events, it may not be necessary for every sensor node to transmit its data. This paper shows how the spatial correlation can be exploited on the Medium Access Control (MAC) layer. To the best of our knowledge, this is the first effort which exploits spatial correlation in WSN on the MAC layer. A theoretical framework is developed for transmission regulation of sensor nodes under a distortion constraint. It is shown that a sensor node can act as a representative node for several other sensor nodes observing the correlated data. Based on the theoretical framework, a distributed, spatial Correlation-based Collaborative Medium Access Control (CC-MAC) protocol is then designed which has two components: Event MAC (E-MAC) and Network MAC (N-MAC). E-MAC filters out the correlation in sensor records while N-MAC prioritizes the transmission of route-thru packets. Simulation results show that CC-MAC achieves high performance in terms energy, packet drop rate, and latency.

Original languageEnglish (US)
Pages (from-to)316-329
Number of pages14
JournalIEEE/ACM Transactions on Networking
Volume14
Issue number2
DOIs
StatePublished - Apr 2006
Externally publishedYes

Keywords

  • CC-MAC
  • Energy efficiency
  • Medium access control
  • Spatial correlation
  • Wireless sensor networks

ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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