On the enhancement of ieee 802.11 overlapping aps capacity sharing

Abstract

Initially, a literature study was carried out about the IEEE 802.11 2007 and IEEE 802.11e standards in order to understand the Medium Access Control (MAC) architectures. The next step after the initial study was the Deliverable Report 6 of FLAVIA (Flexible Architecture for Virtualizable wireless future Internet Access) project that I was familiar with during my placement within NEC. After these primary studies, we focused on Overlapping BSS problem, by performing thorough research for the state of the art on OBSS (e.g. IEEE 802.11aa Draft) as well as the related work whereas several proposed solutions were analyzed. Through the IEEE 802.11aa Draft the main studies were on the QLoad Report element, the HCCA TXOP Advertisement and on the Sharing Schemes (i.e. the Proportional Sharing and the On Demand Sharing). Once these studies were completed an enhanced algorithm was proposed for overlapping APs capacity sharing. The conception of enhanced algorithm was based on the Quiet element that first was introduced on IEEE 802.11 2007. In this thesis, simulations have been carried out by using the software called OPNET Modeler version 12.0. During the implementation of the proposed solution number of cases was evaluated with and without the enhanced algorithm. Finally, the simulation results (i.e. throughput and delay performance) were plotted using the Matlab mathematical software and were further analyzed.