Polling-based protocols for packet voice transport over IEEE 802.11 wireless local area networks

Ray Y.W. Lam, Victor C.M. Leung, Chun Bun Henry Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

35 Citations (Scopus)


In this article we present a survey of different polling-based protocols for supporting voice over IEEE 802.11 wireless local area networks (WLANs). In particular, three key issues are discussed: managing a polling list, determining the polling sequence, and reducing polling overhead. These discussions motivate the proposal of an isochronous coordination function (ICF) for transporting voice packets over IEEE 802.11 WLANs, which combines the advantages of some of the previous protocols. Emulating a dynamic TDMA-like service, ICF can greatly reduce polling overhead and provide fair polling for both uplink and downlink voice traffic by means of a cyclic polling queue. Some simulation results are presented to illustrate the advantages of ICF.
Original languageEnglish
Pages (from-to)22-29
Number of pages8
JournalIEEE Wireless Communications
Issue number1
Publication statusPublished - 1 Feb 2006

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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