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Fair slots assignment mechanisms of IEEE 802.11 networks for multiple access points

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3 Author(s)
Ali, G.G.M.N. ; Dept. of CSE, Khulna Univ. of Eng. & Technol., Khulna, Bangladesh ; Shahin, R. ; Mowna, N.

This paper is a research work to find out an efficient algorithm for slots assignments of multiple access points (APs) of IEEE 802.11 wireless LANs in a framework for seeking an approach which balances between quality of services (QoS) and fairness while achieving maximum network throughput. The explosive growth of wireless systems coupled with the extensive use of laptop and palmtop computers indicate bright future for wireless networks both as standalone systems and as part of large networking infrastructure. IEEE 802.11 wireless LAN has been improving in terms of data rates, radio services, security etc. ever since. Now-a-days WLAN is an essential part for providing both real time and non-real time services to a massive mobile users. But there are still lacking for WLAN to provide both QoS guarantee and fairness which makes it inappropriate for real time applications such as voice and video services. We analyze for a new framework which based on centralized coordination of APs, is a complementary to the emerging 802.11e standard for QoS and guarantee to overcome the hidden node and overlapping cell problems. We simulate three algorithms for slots assignment of multiple APs during contention-free period (CFP) of IEEE 802.11 point coordination function (PCF) medium access control (MAC) mode for ensuring the QoS, inter-AP fairness with maximizing the network throughput.

Published in:

Computers and Information Technology, 2009. ICCIT '09. 12th International Conference on

Date of Conference:

21-23 Dec. 2009