On Energy Efficient Inter-Frequency Small Cell Discovery in Heterogeneous Networks

Onireti, O., Imran, A., Imran, M. A. and Tafazolli, R. (2015) On Energy Efficient Inter-Frequency Small Cell Discovery in Heterogeneous Networks. In: 2015 IEEE International Conference on Communications (ICC), London, UK, 08-12 Jun 2015, pp. 13-18. ISBN 9781467364324 (doi:10.1109/ICC.2015.7248291)

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Abstract

In this paper, we investigate the optimal inter-frequency small cell discovery (ISCD) periodicity for small cells deployed on carrier frequency other than that of the serving macro cell. We consider that the small cells and user terminals (UTs) positions are modelled according to a homogeneous Poisson Point Process (PPP). We utilize polynomial curve fitting to approximate the percentage of time the typical UT missed small cell offloading opportunity, for a fixed small cell density and fixed UT speed. We then derive analytically, the optimal ISCD periodicity that minimizes the average UT energy consumption (EC). Furthermore, we also derive the optimal ISCD periodicity that maximizes the average energy efficiency (EE), i.e. bit-per-joule capacity. Results show that the EC optimal ISCD periodicity always exceeds the EE optimal ISCD periodicity, with the exception of when the average ergodic rates in both tiers are equal, in which the optimal ISCD periodicity in both cases also becomes equal.

Item Type:Conference Proceedings
Additional Information:This work was made possible by NPRP grant No. 5-1047- 2437 from the Qatar National Research Fund (a member of The Qatar Foundation).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Imran, Professor Muhammad and Onireti, Oluwakayode
Authors: Onireti, O., Imran, A., Imran, M. A., and Tafazolli, R.
College/School:College of Science and Engineering > School of Engineering
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
ISBN:9781467364324
Copyright Holders:Copyright © 2015 IEEE
First Published:First published in 2015 IEEE International Conference on Communications (ICC): 13-18
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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