Performance Improvement for the Basic Access Mechanism of WLAN with Noise Detection

To improve the performance of wireless LAN in an error-prone radio channel, this paper proposes a new backoff counter chosen mechanism based on Noise Detection scheme, which is a method to distinguish between packets suffered by noise and collision. In this new mechanism, backoff counter can choose a lower value when the last transfer error is caused by noise, or choose a higher value when it meets a collision. The performance of the new access mechanism is evaluated by a modified Markov chain model. The numerical results show that this new mechanism can improve the saturation throughout, reduce the drop probability and shorten packet delay in a fading channel.

[1]  Haitao Wu,et al.  Performance of reliable transport protocol over IEEE 802.11 wireless LAN: analysis and enhancement , 2002, Proceedings.Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies.

[2]  Pravin Varaiya,et al.  Saturation throughput analysis of IEEE 802.11 wireless LANs for a lossy channel , 2005, IEEE Communications Letters.

[3]  Peng Xiangyu,et al.  Performance Analysis of Hybrid Backoff Algorithm of Wireless LAN , 2007, 2007 International Conference on Wireless Communications, Networking and Mobile Computing.

[4]  Zongkai Yang,et al.  Performance evaluation of distributed access scheme in error-prone channel , 2002, 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering. TENCOM '02. Proceedings..

[5]  Periklis Chatzimisios,et al.  IEEE 802.11 packet delay-a finite retry limit analysis , 2003, GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489).

[6]  Oliver W. W. Yang,et al.  Delay analysis of the IEEE 802.11 DCF , 2003, 14th IEEE Proceedings on Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003..

[7]  A. Girotra,et al.  Performance Analysis of the IEEE 802 . 11 Distributed Coordination Function , 2005 .

[8]  Zoran Hadzi-Velkov,et al.  Saturation throughput - delay analysis of IEEE 802.11 DCF in fading channel , 2003, IEEE International Conference on Communications, 2003. ICC '03..