Smart Connection Architecture for WLAN
Date Issued
2007
Date
2007
Author(s)
Ho, I-Chung
DOI
en-US
Abstract
Over the past few years, there has been a tremendous growth in the market of mobile computing devices exemplified by the laptop computers. Also the ease of installation and low cost of IEEE 802.11 network, contribute to the enormous growth in the adoption of WLAN. Amid this trend, High-Density WLAN has emerged, which comprises of a large number of Access Points (APs). However, with the current connection architecture, we select an AP among such High-Density WLAN only base on signal strength, which can lead to bad performance due to its ignorance of the load at different APs. Moreover, due to existences of noise and interferences, frame errors occur quite often which makes the performance suffers and current architecture only uses rate adaptation to improve the performance.
In this thesis, we propose a new connection architecture, which use monitor mode to collect environment information for AP selection, also adopt rate adaptation and dynamic fragment threshold to improve the performance while condition getting worse. Furthermore, we use estimated bandwidth as a criterion of condition awareness. We use three access points, and four notebooks and a cordless phone as interference to setup practical scenario. Our experiments show that the proposed architecture works well and has better performance than original architecture.
Subjects
監聽模式
無線基地台選擇
速率調變
訊框切割
monitor mode
AP selection
rate adaptation
fragmentation
Type
thesis