Adaptive cross-layer MAC design for improved energy-efficiency in multi-channel wireless sensor networks

Haythem Bany Salameh, Tao Shu, Marwan Krunz

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

We present a novel cross-layer design for improving energy efficiency in a wireless sensor network that utilizes a multi-channel non-persistent CSMA MAC protocol with adaptive MQAM modulation at the physical layer. Cross-layer interactions are achieved through joint, traffic-dependent adaptation of the backoff probability at the MAC layer and the modulation order at the physical layer. The joint optimization of the backoff probability and the modulation order is conducted subject to a constraint on the packet retransmission delay. Such an optimization is shown to produce a significant improvement in the per-bit energy requirement for successful packet delivery. Our analytical findings are verified through numerical results and computer simulations.

Original languageEnglish (US)
Pages (from-to)844-854
Number of pages11
JournalAd Hoc Networks
Volume5
Issue number6
DOIs
StatePublished - Aug 1 2007

Keywords

  • Backoff probability
  • CSMA
  • Cross-layer design
  • MQAM
  • Traffic load
  • WSN

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications

Fingerprint Dive into the research topics of 'Adaptive cross-layer MAC design for improved energy-efficiency in multi-channel wireless sensor networks'. Together they form a unique fingerprint.

  • Cite this