Title :
Polling-based protocols for packet voice transport over IEEE 802.11 wireless local area networks
Author :
Lam, Ray Y W ; Leung, Victor C M ; Chan, Henry C B
Author_Institution :
British Columbia Univ., Vancouver, BC, Canada
Abstract :
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.
Keywords :
computer network management; queueing theory; telecommunication traffic; transport protocols; voice communication; wireless LAN; IEEE 802.11 wireless local area networks; TDMA-like service; WLAN; cyclic polling queue; downlink voice traffic; isochronous coordination function; packet voice transport; polling list management; polling-based protocols; uplink voice traffic; Access protocols; Data communication; Delay; IP networks; Quality of service; Telecommunication network reliability; Traffic control; Transport protocols; Wireless LAN; Wireless application protocol;
Journal_Title :
Wireless Communications, IEEE
DOI :
10.1109/MWC.2006.1593521
