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Variable bit rate VOiP in IEEE 802.11e wireless LANs

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3 Author(s)
Frank Haizhon Li ; Univ. of South Carolina Upstate, Spartanburg ; Yang Xiao ; Jingyuan Zhang

WLANs have become a ubiquitous networking technology deployed everywhere. Meanwhile. VoIP is one popular application and a viable alternative to traditional telephony systems due to its cost efficiency. VoIP over WLAN (VoWLAN) has been emerging as an infrastructure to provide low-cost wireless voice services. However, VoWLAN poses significant challenges due to the characteristics of contention-based protocols and wireless networks. In this article we propose two mechanisms to provide quality of service for variable bit rate VoIP in IEEE 802.11e contention-based channel access WLANs: access time-based admission control and access point dynamic access. Simulation results are conducted to study these schemes.

Published in:

IEEE Wireless Communications  (Volume:15 ,  Issue: 1 )