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QoS Aware Radio Access Technology Selection Framework in Heterogeneous Networks using SDN

Raschella, A, Bouhafs, F, Deepak, GC and MacKay, M (2017) QoS Aware Radio Access Technology Selection Framework in Heterogeneous Networks using SDN. Journal of Communications Networks, 19 (6). pp. 577-586. ISSN 1229-2370

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Abstract

This paper addresses the problem of radio access technology (RAT) selection in heterogeneous networks (HetNets). Current approaches rely on signal related metrics such as signal to interference plus noise ratio (SINR) for selection of the best network for the wireless user. However, such approaches do not take into account the quality of service (QoS) requirements of wireless users and therefore often do not connect them to the most suitable network. We propose a QoS aware RAT selection framework for HetNets based on software-defined networking (SDN). The proposed framework implements a RAT selection strategy that reflects QoS requirements of downlink flows using a metric called fittingness factor (FF). The framework relies on the flexibility and centralised nature of SDN to implement monitoring and RAT capacity assessment mechanisms that help in the realisation of the selection strategy. The simulation campaign illustrates the important gains achieved by our RAT selection framework in terms of data rates assigned to the wireless users, their satisfaction, and their quality of experience (QoE) compared against other state of the art RAT selection solutions.

Item Type: Article
Uncontrolled Keywords: 1005 Communications Technologies, 0805 Distributed Computing
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Computer Science
Publisher: IEEE
Related URLs:
Date Deposited: 13 Feb 2018 10:45
Last Modified: 15 Sep 2018 04:08
DOI or Identification number: 10.1109/JCN.2017.000098
URI: http://researchonline.ljmu.ac.uk/id/eprint/8003

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