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Low-complexity Green Scheduling for the Coordinated Downlink of HetNet System

Heliot, F, Yang, Ting and Foh, CH (2015) Low-complexity Green Scheduling for the Coordinated Downlink of HetNet System In: IEEE 20th International Workshop on Computer Aided Modelling and Design of Communication Links and Networks (CAMAD), 2015-09-07 - 2015-09-09, Guildford, ENGLAND.

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Energy efficiency (EE) has become a critical metric for the next generation mobile networks. Scheduling plays a key role for offering not only spectral efficient but also energy efficient operation in mobile networks. In this paper, we address the problem of EE scheduling for the downlink of a two-tier Heterogeneous Network (HetNet) with orthogonal frequency division multiple access (OFDMA). Contrary to the existing contributions on this research topic, we propose a coordinated green scheduling scheme that maximizes EE for the entire HetNet rather than a particular tier. Moreover, our novel scheduling scheme uses a more realistic EE criterion where the time dependence of the scheduling process is taken into account. Numerical results are presented showing the competitive EE performance of our proposed scheduling scheme with improved user fairness and reduced complexity compared with existing non-HetNet schemes. In dense small cell situation, our scheme reduces the scheduling processing time as much as 25 times.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Foh, CH
Date : 7 September 2015
Copyright Disclaimer : Copyright 2015 IEEE
Uncontrolled Keywords : Energy efficiency; Scheduling; HetNet system; Coordination; OFDMA
Related URLs :
Additional Information : This paper reports work (partially) undertaken in the context of the project LEXNET. LEXNET is a project supported by the European Commission in the 7th Framework Programme (GA n318273). For further information, please visit We would also like to acknowledge the support of the University of Surrey 5GIC ( members for this work.
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:49
Last Modified : 13 Sep 2019 10:39

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