Interference-Aware Dynamic Channel Allocation for Small-Cells in Heterogeneous Networks with FFR

Ilhak BAN  Se-Jin KIM  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E102-A   No.10   pp.1443-1446
Publication Date: 2019/10/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E102.A.1443
Type of Manuscript: LETTER
Category: Mobile Information Network and Personal Communications
Keyword: 
heterogeneous network,  small-cell,  dynamic channel assignment,  fractional frequency reuse,  interference,  

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Summary: 
This letter proposes a novel dynamic channel assignment (DCA) scheme to improve the downlink system capacity in heterogeneous networks (HetNets) with fractional frequency reuse (FFR). In the proposed DCA scheme, the macro base station (MBS) finds small-cell base stations (SBSs) that give strong interference to macro user equipments (MUEs) and then dynamically assigns subchannels to the SBSs to serve their small-cell user equipments (SUEs) according to the cross-tier interference information to MUEs. Through simulation results, it is shown that the proposed DCA scheme outperforms other schemes in terms of the total system capacity.