Title :
Variable bit rate VOiP in IEEE 802.11e wireless LANs
Author :
Li, Frank Haizhon ; Xiao, Yang ; Zhang, Jingyuan
Author_Institution :
Univ. of South Carolina Upstate, Spartanburg
fDate :
2/1/2008 12:00:00 AM
Abstract :
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.
Keywords :
Internet telephony; access protocols; radio access networks; wireless LAN; access point dynamic access; access time-based admission control; bit rate VoIP; protocols; wireless LANs; wireless networks; wireless voice services; Access protocols; Bit rate; Costs; Internet telephony; Media Access Protocol; Payloads; Physical layer; Quality of service; Wireless LAN; Wireless application protocol;
Journal_Title :
Wireless Communications, IEEE
DOI :
10.1109/MWC.2008.4454705