QoS and Integrating issues of Real Time Traffic within Wireless Environment

Abstract: Wireless technology in simple words is a technique that enables more than one user to share resources without having wiring. In comparison with wired local area network in which twisted pair cables, adapters and coaxial cables are used to connect multiple devices. Wireless technology has enabled us to send and receive data through radio and infrared waves and a single access point in WLAN can easily accommodate many users in the same domain. In this era of technology we want everything to be simplified to the maximum and in regards to wireless technology we want to have voice over IP instead of analog phones this is what we call real time traffic. In this Thesis report we have studied the WLAN technology in detail with special emphasis on QoS issues and tried to suggest the possibilities on how to integrate real time traffic on WLAN. Through simulation we will try to find improvements in this field. Our main focus will be on CSMA/CA protocol of 802.11 and 802.11e standards, and different MAC schemes that are used to accommodate different types of traffic, special emphasis is given on DCF and EDCA. Through simulation we will show the results that how these fields can affect the QoS of WLAN, these schemes enables more user capacity which means that we can increase the traffic and make wireless LAN more adaptive. The simulation that we will do in this Thesis will be totally correlated with our research but it will not be practically implemented.