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

Volume

15

Issue

1

fYear

2008

fDate

2/1/2008 12:00:00 AM

Firstpage

56

Lastpage

62

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;

fLanguage

English

Journal_Title

Wireless Communications, IEEE

Publisher

ieee

ISSN

1536-1284

Type

jour

DOI

10.1109/MWC.2008.4454705

Filename

4454705