Biased choice of a mobile telephony tariff type
Telematics and Informatics
SUTIL - Network selection based on utility function and integer linear programming
Computer Networks: The International Journal of Computer and Telecommunications Networking
Max-utility wireless resource management for best-effort traffic
IEEE Transactions on Wireless Communications
Utility-Based Resource Allocation in Wireless Networks
IEEE Transactions on Wireless Communications
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This work considers the network selection and the bandwidth assignment problems in the context of heterogeneous wireless networks operated by a single service provider. The current commercial and research practices on resource management are presented, and a novel utility-based approach supporting multiple client classes is introduced. A bandwidth sharing policy and a "controlled unfairness" scheme is achieved by combining distinct priority classes with logarithmic utility functions that variably grade the bandwidth allocated to clients. To demonstrate the possibilities of this approach an optimisation problem is formulated and its solution utility-optimally allocates bandwidth and distributes clients to base stations, modelling a network-side resource management system. The centralised operation allows for network-wide provision of comparable service levels to clients of the same class. The optimal solution is compared to several heuristic methods. Simulations showcase the behaviour of the system, which successfully differentiates clients and utilises all available resources.