20-07-2012, 01:54 PM
ENSC 427 COMMUNICATION NETWORKS WLAN-WiMAX ANALYSIS
OPNET
Wimax.pdf (Size: 1.11 MB / Downloads: 122)
Introduction
Overview of WiMAX technology and comparison
between Wi-Fi and WiMAX.
WiMAX which is based on the IEEE802.16 standard provides a wireless broadband
technology. Both the technical execution and the business case show the differences between
WiMAX and traditional Wi-Fi technology. As they are both wireless technology, most of the
people consider WiMAX as the robust of Wi-Fi. The simple comparison shows the advantage
of WiMAX in larger network coverage area and the faster transfer speed than Wi-Fi. Because
of the technologies reason and standardization issues, WiMAX does not present its better
performance in market position. Besides the newborn technology and the standardization
issues, the relatively high price also decreases the speed of WiMAX to occupy the market.
Project motivation and goal
In this project our purpose is to test the transfer efficiency of WLAN and WiMAX network
by using the OPNET software. There are two models are built in this project. One is the
WiMAX connection model and the other one is the WLAN and WiMAX model. The
WiMAX connection model is used to test the connection efficiency between the base station
and the work station while the WLAN and WiMAX model is dedicated to show the file
transfer efficiency.
WiMAX Connection model
The basic components of WiMAX connection station is the wireless work station and
WiMAX base station. The most common connections of Wiamx are PMP which means point
to multipoint. The PMP topology, where a group of subscriber terminals are connected to a
base station separately, is the best choice for most of the users to who do not need the entire
bandwidth and extremely high speed.
WLAN-WiMAX network model
In order to improve the performance of WiMAX and Wi-Fi network, these two technologies
are integrated by a WiMAX/W-iFi gateway that enables to connect the users in both
technologies area. By the WiMAX/Wi-Fi gateway, the workstations in WiMAX network area
can access to Wi-Fi services that are not belong to WiMAX region by employing the multiple
hops of MANET which is Mobile AD Hoc Network. This integrated technology is the most
practical way to perform the large scale wireless networks in cities.