IEEE 802.11e enhancement for voice service

Motivated by the promising voice over IP technology and the wide service availability of WLANs, the application of voice over WLAN (VoWLAN) is expected to experience dramatic growth in the near future. Originally designed for high-rate data traffic, WLANs may experience bandwidth inefficiency when supporting delay-sensitive and low-rate voice traffic. This article proposes mechanisms to enhance QoS support capability of IEEE 802.11e for voice service. Unnecessary polling of silent voice stations is avoided, and header and control overheads are suppressed significantly. Compared to IEEE 802.11e, our mechanisms can greatly improve the capacity of WLANs to support voice service.

[1]  Soung Chang Liew,et al.  Solutions to performance problems in VoIP over a 802.11 wireless LAN , 2005, IEEE Transactions on Vehicular Technology.

[2]  Van Jacobson,et al.  Compressing IP/UDP/RTP Headers for Low-Speed Serial Links , 1999, RFC.

[3]  Yang Xiao,et al.  Voice capacity analysis of WLAN with unbalanced traffic , 2006, IEEE Transactions on Vehicular Technology.

[4]  Thierry Turletti,et al.  A survey of QoS enhancements for IEEE 802.11 wireless LAN , 2004, Wirel. Commun. Mob. Comput..

[5]  Nitin H. Vaidya,et al.  Priority Scheduling in Wireless Ad Hoc Networks , 2002, MobiHoc '02.

[6]  A. S. Krishnakumar,et al.  Quality-of-service in ad hoc carrier sense multiple access wireless networks , 1999, IEEE J. Sel. Areas Commun..

[7]  Sunghyun Choi,et al.  Analysis of IEEE 802.11e for QoS support in wireless LANs , 2003, IEEE Wireless Communications.

[8]  T. S. Randhawa,et al.  Saturation throughput analysis of IEEE 802.11e enhanced distributed coordination function , 2004, IEEE Journal on Selected Areas in Communications.