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Performance Evaluation of Heterogeneous Wireless Networks Considering Competing Objectives and Viewpoints

Ernst, J. E. ; Kremer, S. K. ; Rodrigues, J. R.

Performance Evaluation of Heterogeneous Wireless Networks Considering Competing Objectives and Viewpoints, Proc ACM Symp. on Appl. Computing, Salamanca, Spain, Vol. USB, pp. 1 - 8, April, 2015.

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Abstract
Metrics, objectives and point of view are crucial to designing a high performance wireless network. A high performance network is different from one user to the next. Network de- sign is often concerned with optimizing traditional metrics such as packet delivery ratio, throughput and delay. How- ever, a user is interested in a trade-off between these, and many more metrics such as cost in order to have a good ex- perience depending on their application. Furthermore, op- erators who run these networks are interested in meeting the users’ requirements in order to maintain a good reputa- tion. Operators are also interested in maximizing revenue and profit since most networks are commercial enterprises. With these competing interests in mind, this paper proposes a network model for heterogeneous wireless networks which may be used to make informed decisions for handover, rout- ing, scheduling and other common network functions which often depend on traditional, limited metrics. Experimental evidence for these shortcomings is provided, using 802.11 Wi-Fi as an example case. A simple Pareto method for addressing the shortcomings of the traditional approach is given as a basis for future work which may be expanded to more complicated HWNs.