• Dr A V N CHANDRA SEKHAR

Wireless networks can be accomplished by adding Access Points (APs) which is known as infrastructure mode or without an AP which is known as Adhoc mode. Both bring about several issues, the design must be care-fully considered before it is deployed. There are many factors that are affecting the performances of Wireless Local Area Networks (WLAN) topologies designed for network. In this paper we investigating and analyzing the performances of two types of WLAN topologies namely; Basic Service Sets (BSSs) and Extended Ser-vice Sets (ESSs). Both BSS and ESS are categorized as Infrastructure mode i.e. they require AP or APs before they can function. The two types of WLAN topologies were modeled with an Optimized Network Engineering Tool (OPNET) into scenarios. There are connections between APs, switch and application server which host application of high priority. The simulation was performed with real-time video conferencing with variations in numbers of users, and data rate in megabit per seconds. Performance metrics such as throughput, and delay were measured and closely analyzed to see which connection maintain its Quality of Service (QoS).

"PERFORMANCE ANALYSIS OF WIRELESS NETWORK TOPOLOGIES IN WLAN BY USING OPNET", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 7, page no.b317-b321, July-2021, Available :http://www.jetir.org/papers/JETIR2107169.pdf

"PERFORMANCE ANALYSIS OF WIRELESS NETWORK TOPOLOGIES IN WLAN BY USING OPNET", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 7, page no. ppb317-b321, July-2021, Available at : http://www.jetir.org/papers/JETIR2107169.pdf