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- W1477992425 abstract "While wireless access networks are rapidly evolving, constantly increasing both in coverage and offered bandwidth, the vision for Next Generation Wireless Networks (NGWNs) encompasses a core network incorporating various Radio Access Technologies (RATs) in a unified and seamless manner. In such an environment, providers with multi-RAT technologies will aim at the maximization of the satisfaction of their subscribers, while attempting to avoid overloading their subsystems. In this paper we deal with the network selection problem in a multi-RAT environment where users are equipped with multimode terminals. We introduce a utility-based optimization function and formulate the problem of allocating user terminals to RATs as an optimization problem under demand and capacity constraints. This problem is recognized as NP-hard and we propose an optimal Branch and Bound (BB) algorithm, as well as a greedy heuristic which exploits a metric that measures the utility gained versus the resource spent for each allocation. BB manages to significantly reduce the search procedure, while greedy produces optimal allocation results similar to BB but with very low computational cost." @default.
- W1477992425 created "2016-06-24" @default.
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- W1477992425 date "2012-01-01" @default.
- W1477992425 modified "2023-10-06" @default.
- W1477992425 title "RAT Selection Optimization in Heterogeneous Wireless Networks" @default.
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- W1477992425 doi "https://doi.org/10.1007/978-3-642-30376-0_33" @default.
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