A MAC protocol for multi-channel multi-interface wireless mesh network using hybrid channel assignment scheme

Chi-Yu Li*, An Kai Jeng, Rong Hong Jan

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

In recent years, Wireless Mesh Network (WMN) which uses a multi-hop configuration to extend the reach of the last-mile access to Internet has come into public notice. WMN improves network performance by the use of multiple orthogonal (non-overlapping) channels and multiple wireless interfaces. However, the Medium Access Control (MAC) protocol in IEEE 802.11 standard was designed and suited for only one channel and one interface. In this paper, we present a new MAC protocol which is specially designed for multi-channel and multi-interface WMNs. The proposed MAC protocol employs a hybrid channel assignment strategy to solve the rendezvous problem and a waiting time scheme for updating network allocation vectors (NAVs) to solve the multichannel hidden terminal problem. Simulation results show that the proposed protocol can achieve a better utilization of both interfaces and channels.

Original languageEnglish
Pages (from-to)1041-1055
Number of pages15
JournalJournal of Information Science and Engineering
Volume23
Issue number4
DOIs
StatePublished - 1 Jul 2007

Keywords

  • Channel assignment
  • MAC protocol
  • Multi-channel
  • Multi-interface
  • Wireless mesh networks

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