Tractable Coverage Analysis for Hexagonal Macrocell-Based Heterogeneous UDNs With Adaptive Interference-Aware CoMP

We consider a heterogeneous ultra dense network (HUDN) with both the hexagon and Poisson point process (PPP) layouts, which is more relevant for practical scenarios. A user-centric and adaptive interference-aware non-coherent coordinated multi-point transmission (IA-CoMP) scheme is used as a system...

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Bibliographic Details
Published in:IEEE transactions on wireless communications 2019-01, Vol.18 (1), p.503-517
Main Authors: Liu, Ling, Zhou, Yiqing, Zhuang, Weihua, Yuan, Jinhong, Tian, Lin
Format: Article
Language:English
Subjects:
Adaptive systems
Analytical models
Computer simulation
coordinated multi-point
Coverage analysis
heterogeneous ultra dense network
hexagonal macrocell
Interference
Layout
Macrocell networks
Performance analysis
Upper bounds
Wireless communication
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Summary:We consider a heterogeneous ultra dense network (HUDN) with both the hexagon and Poisson point process (PPP) layouts, which is more relevant for practical scenarios. A user-centric and adaptive interference-aware non-coherent coordinated multi-point transmission (IA-CoMP) scheme is used as a system setup to reduce both the cross-tier and the co-tier inter-cell interference (ICI) for the HUDN with range expansion (RE) in small cells. Due to the involvement of hexagonal macrocells, it is intractable to analyze the coverage performance of HUDNs with IA-CoMP. To this end, we present a mobile station GrouPing (MSGP)-based coverage analysis method, which partitions all MSs into four groups according to their main interference, and the whole coverage is obtained as the sum of the coverage of each MS group. We demonstrate that the proposed MSGP-based coverage analysis method can provide a tight upper bound when compared with Monte Carlo simulations. As the small cell density increases, the system coverage of HUDNs with hexagonal macrocells reduces exponentially, while the system coverage of HUDNs with PPP-based macrocells remains unchanged. Moreover, the system coverage increases with the larger one of the main ICI judging coefficient and the RE bias.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2018.2882434