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General Information
    • ISSN: 1793-8244
    • Frequency: Semiyearly
    • DOI: 10.18178/JACN
    • Editor-in-Chief: Dr. Ka Wai Gary Wong
    • Executive Editor: Ms. Nina Lee
    • Abstracting/ Indexing: EI (INSPEC, IET), Engineering & Technology Digital Library, DOAJ, Electronic Journals Library, Ulrich's Periodicals Directory, International Computer Science Digital Library (ICSDL), ProQuest, and Google Scholar.
    • E-mail: jacn@ejournal.net
Dr. Ka Wai Gary Wong
Division of Information and Technology Studies, Faculty of Education, The University of Hong Kong.
It's a honor to serve as the editor-in-chief of JACN. I'll work together with the editors and reviewers to help the journal progress
JACN 2016 Vol.4(2): 80-85 ISSN: 1793-8244
DOI: 10.18178/JACN.2016.4.2.208

A Novel Downlink Interference Management Mechanism for Two-Tier OFDMA Femtocell Networks

Gwo-Jong Yu and Hoai Nam Bui Khac
Abstract—In wireless broadband access networks, almost indoor environment encounters serious coverage problem due to non-line of sight transmission. To improve the coverage, femtocell has been introduced as a promising technology. However, the deployment of femtocells may introduce extra interference to macrocell base stations. An effective interference management mechanism is required to optimize the system performance. In this paper, a resource allocation algorithm is proposed to resolve the two-tier downlink interference problem. The proposed scheme combines fractional frequency reuse (FFR) in macrocell and a heuristic graph-based channel assignment algorithm in femtocell to reduce the interference problem. Simulation results reveal that the proposed approach significantly improves the system throughput of the two-tier OFDMA networks.

Index Terms—Femtocells, interference management, resource allocation, Frational Frequence Reuse (FFR).

Gwo-Jong Yu and Hoai Nam Bui Khac are with the Department of Computer Science and Information Engineering, Aletheia University, New Taipei City, 251 Taiwan (e-mail: yugj@mail.au.edu.tw, hoainam.bk2012@gmail.com).


Cite:Gwo-Jong Yu and Hoai Nam Bui Khac, "A Novel Downlink Interference Management Mechanism for Two-Tier OFDMA Femtocell Networks  ," Journal of Advances in Computer Networks vol. 4, no. 2, pp. 80-85, 2016.

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