Protection and guarantee for voice and video traffic in IEEE 802.11e wireless LANs

In order to support multimedia applications such as voice and video over the wireless medium, a contention-based channel access function, called enhanced distributed coordination function (EDCF), is being developed in the emerging standard IEEE 802.11e. In EDCF, differentiated services are provided for different traffic classes. In this paper, we propose a two-level protection and guarantee mechanism for voice and video traffic in IEEE 802.11e wireless LANs. In the first-level protection, the existing voice and video flows are protected from the new and other existing voice and video flows. In the second-level protection, the voice and video flows are protected from the best-effort data traffic. For each protection level, a couple of protection mechanisms are proposed. Extensive simulation results show that the proposed two-level protection and guarantee mechanism is very effective in terms of protecting and guaranteeing existing voice and video flows as well as fully utilizing the channel capacity

[1]  Michael G. Barry,et al.  Supporting service differentiation in wireless packet networks using distributed control , 2001, IEEE J. Sel. Areas Commun..

[2]  Ieee . Wg.  Part11 : Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, Higher-Speed Physical Layer Extension in the 2.4 GHz Band , 1999 .

[3]  Sunghyun Choi,et al.  QoS Signaling for Parameterized Traffic in IEEE 802.11e Wireless LANs , 2002, AISA.

[4]  L. E. Miller,et al.  Implementing message priority policies over an 802.11 based mobile ad hoc network , 2001, 2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277).

[5]  Ruay-Shiung Chang,et al.  A Priority Scheme for IEEE 802. 11 DCF Access Method , 1999 .

[6]  Sunghyun Choi,et al.  IEEE 802.11e Wireless LAN for Quality of Service , 2001 .

[7]  Claude Castelluccia,et al.  Differentiation mechanisms for IEEE 802.11 , 2001, Proceedings IEEE INFOCOM 2001. Conference on Computer Communications. Twentieth Annual Joint Conference of the IEEE Computer and Communications Society (Cat. No.01CH37213).

[8]  Daniel Collins,et al.  Carrier Grade Voice Over IP , 2000 .

[9]  Yang Xiao,et al.  Performance analysis of priority schemes for IEEE 802.11 and IEEE 802.11e wireless LANs , 2005, IEEE Trans. Wirel. Commun..

[10]  Yang Xiao.  A simple and effective priority scheme for IEEE 802.11 , 2003, IEEE Communications Letters.

[11]  Sunghyun Choi,et al.  IEEE 802.11e - fair resource sharing between overlapping basic service sets , 2002, The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[12]  Yang Xiao.  Enhanced DCF of IEEE 802.11e to support QoS , 2003, 2003 IEEE Wireless Communications and Networking, 2003. WCNC 2003..

[13]  Yang Xiao.  Backoff-based priority schemes for IEEE 802.11 , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[14]  Sunghyun Choi,et al.  IEEE 802.11 e contention-based channel access (EDCF) performance evaluation , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[15]  Ieee . Wg.  Part 11 : Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specification , 2003 .

[16]  Sunghyun Choi,et al.  Collaborative QoS architecture between DiffServ and 802.11e wireless LAN , 2003, The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring..