Mobility impact on cluster based MAC layer protocols in wireless sensor networks

Pranav M. Pawar*, Rasmus H. Nielsen, Neeli R. Prasad, Ramjee Prasad

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

5 Citations (Scopus)

Abstract

Wireless sensor networks (WSNs) enable a wide variety of applications resulting in still increasing requirements for the protocols supporting the operations. The medium access control (MAC) layer protocols are essential for improving the performance of an application and its quality of service because MAC protocols influence channel capacity utilization, network delay, energy consumption, and scalability. The contribution of this paper is two novel cluster-based time division multiple access (TDMA) scheduling MACs for WSNs and an analysis of the mobility impact on both. The proposed MAC layer protocols support real time applications where the cluster-based scheduling improves the scalability and also improves the performance in varying network conditions. The paper presents the design, implementation and performance evaluation of the proposed cluster based TDMA scheduling algorithms green conflict free (GCF) and multicolor-GCF (M-GCF) for high complexity and high requirement applications of WSNs under both low and high mobility conditions. The comparative evaluation shows that the M-GCF algorithm has better slot sharing and less conflicts with reduced communication energy consumption, delay, and good throughput under static and low mobility conditions while the GCF algorithm has better performance in high mobility scenarios. The paper also defines the mobility threshold that decides the use of the GCF- and M-GCF algorithms according to the mobility requirement of application.

Original languageEnglish
JournalWireless Personal Communications
Volume74
Issue number4
Pages (from-to)1213-1229
Number of pages17
ISSN0929-6212
DOIs
Publication statusPublished - 1 Feb 2014

Keywords

  • Clustering
  • Energy efficiency
  • GCF
  • Graph coloring
  • M-GCF
  • Media access control (MAC)
  • Mobility
  • Time division multiple access (TDMA)
  • Wireless sensor networks (WSN)

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