Joint MS Offloading and Interference Coordination for Heterogeneous Ultra Dense Networks

Heterogeneous ultra dense network (HUDN) is a promising technique to improve network capacity for the fifth generation mobile communication system. However, HUDNs face the challenges of severe inter-cell interference and imbalanced load. To maximize the system utility, the mobile station (MS) offloa...

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Bibliographic Details
Published in2019 11th International Conference on Wireless Communications and Signal Processing (WCSP) pp. 1 - 6
Main Authors Qu, Di, Xie, Shangwei, Sun, Bule, ZhOU, Yiqing
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2019
Subjects
Cell Range Expansion
Frequency-domain analysis
Heterogeneous Ultra Dense Networks
Heuristic algorithms
Interference
Interference Management
Macrocell networks
MS Offloading
Optimization
Resource management
Signal to noise ratio
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Summary:Heterogeneous ultra dense network (HUDN) is a promising technique to improve network capacity for the fifth generation mobile communication system. However, HUDNs face the challenges of severe inter-cell interference and imbalanced load. To maximize the system utility, the mobile station (MS) offloading and interference coordination should be considered jointly. This paper applies cell range expansion (CRE) in HUDNs to balance cell loads. First, the interference source of MSs is analyzed for a HUDN with CRE, based on which the initial idea of frequency domain interference coordination is proposed. Then, a joint MS offloading and interference coordination optimization problem is formulated, which is NP hard. Therefore, a heuristic algorithm is proposed to solve the problem step by step. The simulation results show that the proposed scheme can improve the SINR and rate of MSs when compared to the traditional frequency domain ICIC scheme.
ISSN:2472-7628
DOI:10.1109/WCSP.2019.8928074