1. Call Admission Control Optimization in WiMAX Networks.
- Author
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Bo Rong, Yi Qian, Lu, Kejie, Hsiao-Hwa Chen, and Guizani, Mohsen
- Subjects
IEEE 802.16 (Standard) ,APPLICATION service providers ,INTERNET industry ,MATHEMATICAL optimization ,ALGORITHMS ,APPROXIMATION theory - Abstract
Worldwide interoperability for microwave access (WiMAX) is a promising technology for last-mile Internet access, particularly in the areas where wired infrastructures are not available. In a WiMAX network, call admission control (CAC) is deployed to effectively control different traffic loads and prevent the network from being overloaded. In this paper, we propose a framework of a 2-D CAC to accommodate various features of WiMAX networks. Specifically, we decompose the 2-D uplink and downlink WiMAX CAC problem into two independent 1-D CAC problems and formulate the 1-D CAC optimization, in which the demands of service providers and subscribers are jointly taken into account. To solve the optimization problem, we develop a utility- and fairness-constrained optimal revenue policy, as well as its corresponding approximation algorithm. Simulation results are presented to demonstrate the effectiveness of the proposed WiMAX CAC approach. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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