Joint resource allocation and user association for heterogeneous cloud radio access networks

Ying Loong Lee, Li-Chun Wang, Teong Chee Chuah, Jonathan Loo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

Cloud radio access networks (C-RANs) have been regarded as a promising architecture for energy-efficient fifth generation systems. In this paper, a new joint remote radio head (RRH) activation, user-RRH pairing and resource allocation strategy is proposed for heterogeneous C-RANs (H-CRANs). We first formulate an optimization problem to maximize the energy efficiency of H-CRANs. Then, a low-complexity suboptimal solution is developed. Our proposed mechanism consists of three key procedures: 1) RRH activation is performed based on greedy RRH selection; 2) user-RRH pairing is performed based on the channel quality; 3) the resource allocation problem is solved by dual decomposition. Simulation results show that the proposed strategy can improve energy efficiency significantly.

Original languageEnglish
Title of host publicationProceedings of the 28th International Teletraffic Congress, ITC 2016
EditorsTobias Hossfeld, Brian L. Mark, Gary Chan, Andreas Timm-Giel
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages87-93
Number of pages7
ISBN (Electronic)9780988304512
DOIs
StatePublished - 6 Jan 2017
Event28th International Teletraffic Congress, ITC 2016 - Wurzburg, Germany
Duration: 12 Sep 201616 Sep 2016

Publication series

NameProceedings of the 28th International Teletraffic Congress, ITC 2016
Volume1

Conference

Conference28th International Teletraffic Congress, ITC 2016
CountryGermany
CityWurzburg
Period12/09/1616/09/16

Keywords

  • Energy efficiency
  • H-CRAN
  • RRH activation
  • Resource allocation
  • User association

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