OPNET Network Simulations Based on the Performance of WLAN IEEE802.11

摘要

This paper mainly focus on the modeling and simulating of WLAN (the wireless local area network) IEEE82.il. Based on the current research of IEEE 82.11 protocol and the most powerful network simulation tool OPNET, the paper introduces various behavior of WLAN and standards for WLAN. Research on CSMA / CA(Carrier Sense Multiple Access / Collision Avoidance) and a simulation study of optimization algorithm to the binary backoff time are conducted, DCF(Distributed Coordination Function)-based access solutions are analyze. The simulation of MAC (media access control) and PHY(Physical Layer) functional design and algorithm theory have been carried out. It can be seen from the simulation result that the theory of optimal design reduces network latency and packet loss rate, and improve the system throughput, which has an important reference value for the future deployment of WLAN IEEE 82.11 standards.