Design and Performance Evaluation

Networking

Each network is individually tailored to the needs of the user. Yet how do you find out if the network is meeting those needs and if not, what needs to be done to fix it? The answer is performance evaluation. After the network has been set up, several methods may be used to determine how effective the network is at its given task. Data is collected about use and performance, then analyzed statistically to identify key problems. After outlining a solution, optimization of the network will occur until the performance is deemed satisfactory.




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Each network is individually tailored to the various needs of the users, including throughput, delay requirement, fairness, resilience/robustness of the network, cost-effectiveness, to name a few. Yet how do you find out if the network is meeting those needs and if not, what needs to be done to fix it? The answer lies in the network design and performance evaluation.

Once the network has been set up, several methods may be used to determine how effective the network is at its given task under various conditions. Data is collected about network usage and performance, and then statistically analyzed to identify key problems. After outlining a solution, optimization of the network will then follow until the performance is deemed satisfactory.

Experts in network design and performance evaluation must have critical understanding of network protocols across all layers and their interactions, simulation skills, analytical modeling techniques for user traffic and protocols, as well as network measurement and statistical analysis of data, toward optimizing existing networks for best performance. This skill set is required also for developing new protocols for networks in unconventional/challenging environments.

Network design and performance evaluation is central to almost all kinds of existing networks and protocols ranging from connection-oriented networks, packet-switched networks or Internet, various protocols in transport layer and MAC layer, up to wireless networks and mobile ad-hoc/sensor networks.

Associated Courses