Implied costs for multirate wireless networks

Authors:
Cesar Vargas;Manju V. Hegde;Morteza Naraghi-Pour
Affiliations:
Center for Electronics and Telecommunications, ITESM-Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey, NL 64849, Mexico;Department of Electrical Engineering, Washington University, St. Louis, MO;Department of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, LA
Venue:
Wireless Networks
Year:
2004

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Abstract

Implied costs for multirate wireless networks are calculated and their use is demonstrated for quantifying mobility, traffic load, call pricing, network optimization and for evaluating trade-offs between calls of different rates. User mobility is modeled by assigning call termination and call handoff probabilities. Fixed Channel Assignment (FCA) is used with priority for handoffs over new call arrivals by reserving a number of channels in all the cells. The performance measures used are new call blocking and handoff drop probabilities. The implied cost is calculated for the network net revenue, which considers the revenue generated by accepting a new call arrival into the network as well as the cost of a handoff drop in any cell. Simulation and numerical results are presented to show the accuracy of the model. The implied costs are used to suggest pricing techniques for different calls based on mobilities and bandwidth. Finally, a nonlinear constrained optimization problem is formulated to calculate the sum revenue for a given network by maximizing the net revenue using implied costs in a gradient descent algorithm. The implied cost analysis also shows that matching capacity distribution to not only exogenous traffic, but also to mobility can significantly increase revenue.