Analysis of real time video traffic for enhanced distributed channel access over WLAN

This paper presents a study of an Enhanced Distributed Channel Access method (EDCA) in the IEEES02.11e standard and enhanced protocol. The protocol is evaluated under different network loads for real-time applications using MPEG-4 video traffic, and then compared with the earlier legacy IEEE 802.11 DCF access method. A Simulation using Network Simulator 2 (NS-2) & Evalvid were carried out using different performance metrics and applied various QoS parameters such as average end-to-end delay, throughput and packet loss ratio. Simulation results of throughput, decidable frame rate, PSNR, and packet loss, show good quality with lower packet loss and higher throughput.

[1]  Thierry Turletti,et al.  Adaptive EDCF: enhanced service differentiation for IEEE 802.11 wireless ad-hoc networks , 2003, 2003 IEEE Wireless Communications and Networking, 2003. WCNC 2003..

[2]  King Ngi Ngan,et al.  Admission control in IEEE 802.11e wireless LANs , 2005, IEEE Netw..

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

[4]  Qiang Ni,et al.  Performance analysis and enhancements for IEEE 802.11e wireless networks , 2005, IEEE Network.

[5]  Didier J. Le Gall,et al.  The MPEG video compression standard , 1991, Compcon.

[6]  Brahim Bensaou,et al.  Performance analysis of IEEE 802.11e contention-based channel access , 2004, IEEE Journal on Selected Areas in Communications.

[7]  Jinyun Zhang,et al.  QoS enhancement in IEEE 802.11 wireless local area networks , 2003, IEEE Commun. Mag..

[8]  Mihaela van der Schaar,et al.  Performance Analysis of Video Transmission Over IEEE 802.11a/e WLANs , 2007, IEEE Trans. Veh. Technol..

[9]  Yang Xiao,et al.  Voice and video transmissions with global data parameter control for the IEEE 802.11e enhance distributed channel access , 2004, IEEE Transactions on Parallel and Distributed Systems.

[10]  Y. Harada,et al.  A QoS scheduler for IEEE 802.11e WLANs , 2004, First IEEE Consumer Communications and Networking Conference, 2004. CCNC 2004..

[11]  What Are the Mpeg Standards? , .

[12]  David R. Bull,et al.  Throughput analysis of IEEE 802.11 and IEEE 802.11e MAC , 2004, 2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733).