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A Hybrid Approach for Radio Access Technology Selection in Heterogeneous Wireless Networks

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4 Author(s)

In heterogeneous wireless networks, different radio access technologies are integrated and may be jointly managed. To optimize composite network performance and capacity, Common Radio Resource Management (CRRM) mechanisms need to be defined. This paper tackles the access technology selection ?? a key CRRM functionality ?? and proposes a hybrid decision framework to dynamically integrate operator objectives and user preferences. Mobile users make their selection decision based on their needs and preferences as well as on the cost and QoS information signaled by the network. Appropriate decisional information should then be derived so that the network better utilizes its radio resources, while mobile users maximize their own utility. We thus present two tuning policies, namely the staircase and the slope tuning policies, to dynamically modulate this information. Simulation results illustrate the gain from using our tuning policies in comparison with a static one: they lead to better network performance, larger operator gain and higher user satisfaction. Index Terms ?? Radio access technology selection, heterogeneous wireless networks, hybrid decision-making approach.

Published in:

Wireless Conference (EW), Proceedings of the 2013 19th European

Date of Conference:

16-18 April 2013