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OPNET Technologies © 2008 OPNET Technologies, Inc. |
Research With OPNET OPNET Modeler is one of several network simulators available for use in the ELISA lab. The OPNET product provides a large collection of detailed simulation models for different network technologies, protocols, and applications. We are not using OPNET for any teaching at the University of Calgary, but we have used OPNET in some of the networking research activities in my group. To date, our primary use of OPNET Modeler has been for modeling video streaming applications in wireless LAN scenarios. We use the IEEE 802.11b WLAN models, as well as the Ethernet LAN models. Substantial effort went into validation of the simulation against empirical measurements of WLAN video streaming performance in an IEEE 802.11b wireless LAN. The following is a complete list of all of our research papers that have used OPNET Modeler: Title: Simulation Evaluation of Wireless Web Performance in an IEEE 802.11b Classroom Area Network Abstract: This paper presents a simulation study of an IEEE 802.11b wireless LAN (WLAN) used as a classroom area network. The simulation is conducted using OPNET Modeler 9.1. The first part of the paper discusses parameterization and validation of the simulation model, based on empirical measurements in a wireless classroom environment. The second part of the paper presents a simulation study designed to estimate the number of clients that can be supported in the WLAN, as well as the user-perceived Web response time as a function of network load. The simulation results show that an IEEE 802.11b WLAN can easily support up to 100 clients with modest Web browsing activities. The results also show that protocol features such as persistent connections provide a significant performance advantage in a WLAN environment.This paper presents a simulation study of an IEEE 802.11b wireless LAN (WLAN) used as a classroom area network. The simulation is conducted using OPNET Modeler 9.1. The first part of the paper discusses parameterization and validation of the simulation model, based on empirical measurements in a wireless classroom environment. The second part of the paper presents a simulation study designed to estimate the number of clients that can be supported in the WLAN, as well as the user-perceived Web response time as a function of network load. The simulation results show that an IEEE 802.11b WLAN can easily support up to 100 clients with modest Web browsing activities. The results also show that protocol features such as persistent connections provide a significant performance advantage in a WLAN environment.
Simulation Evaluation of Wireless Web Performance
in an IEEE 802.11b Classroom Area Network (PDF, 520 KB)
by Guangwei Bai and Carey Williamson. OPNET Technologies, Inc. is a leading provider of solutions for managing networks and applications. OPNET's best-in-class solutions address application troubleshooting, application monitoring, network monitoring, network configuration management, capacity management, and network simulation. OPNET’s solutions have been operationally proven in thousands of customer environments worldwide, including corporate and government enterprises, government and defense agencies, network service providers, and network equipment manufacturers. For more information about OPNET and its products, visit www.opnet.com. |
