Wireless networks has biggest constraint of limited bandwidth in comparison to wired networks but in spite of this constraint wireless networks are becoming popular day by day on account of their flexibility, mobility as well as inexpensive physical medium (air). Wireless local area networks (WLANs) are error-prone as well as fragile. The commuters feel annoyed when all of sudden communication cuts off and transmission of packets fails. Hence, it becomes an obligation to improve WLAN performance metrics. We investigated throughput and delay performance of WLANs using network simulation tool OPNET concentrating on the IEEE 802. 11 Mac layer parameters, and suggest that Wireless LAN performance can be improved by fine tuning parameters such as fragmentation threshold, request to send (RTS) thresholds and buffer size. The main objective of this paper is buffer size manipulation to reduce load and delays, leading to performance improvement.
The authors REF suggest that Wireless LAN performance can be improved by fine tuning parameters such as fragmentation threshold, and buffer size.