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Fair Partitioning of the Downlink Resources of an OFDMA-Based Multi-User Multi-Tier Cellular Network Using Fractional Frequency Reuse
Akindele Segun AFOLABI Erdenebileg MUNKHBAT Yumi TAKAKI Chikara OHTA Hisashi TAMAKI Yoshizo TANAKA Takashi YAMAMOTO Yoji OKADA
IEICE TRANSACTIONS on Communications
Publication Date: 2012/10/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
resource partitioning, OFDMA, FFR, macrocell, femtocell,
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Orthogonal Frequency Division Multiple Access (OFD-MA) is a leading air interface candidate for future generation cellular networks. However, if deployed in a multi-user multi-tier cellular system, it is important to fairly share radio resources such as transmission power and sub-carriers among co-tier and cross-tier users. This paper focuses on a mathematical formulation of cell inner-zone/outer-zone radio resource partitioning variables and considers the case of an FFR-based macrocell underlaid with femtocell. By applying an exhaustive search procedure on the developed formulation, we determine the optimal radio resource partitioning parameter values from the perspectives of macrocell user fairness and femtocell throughput maximization.