NDLI: Optimising coverage efficiency in heterogeneous wireless cellular networks

Content Provider	IET Digital Library
Author	Phan, Ca V. Vien, Quoc Tuan
Abstract	In this study, the authors first propose an analytical model for investigating the impacts of power allocation (PA) and cell density allocation (CDA) on coverage efficiency (CE) of heterogeneous wireless cellular networks (HWCNs) under limited resources. It is shown that the interference among cells that belong to different tiers is reduced significantly in higher path loss environment and results in a higher coverage. The network coverage of the HWCN can be further extended with the deployment of a higher cell density in a more lossy environment. This accordingly leads us to develop an optimisation problem (OP) to maximise the CE by optimising the PA and CDA under the constraint of limited cell power and total power available in the downlink HWCN. In particular, they proposed a two-stage approach for solving the OP to sequentially obtain the heuristic value of the CDA and PA due to complicated objective function along with various involved parameters. Numerical results reveal that the coverage obtained by the heuristic solution at the first-stage is significantly improved with lower power than the conventional approach. Furthermore, an enhanced overall CE is achieved for all cases of the power constraint when applying fully two stages in their proposed algorithm.
Starting Page	3022
Ending Page	3029
Page Count	8
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 17, Oct (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/17
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2020.0313
Journal	IET Communications
Publisher Date	2020-08-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Analytical Model Bandwidth Allocation Cell Density Allocation Cellular Radio Downlink HWCN Electromagnetic Compatibility Heterogeneous Wireless Cellular Network Higher Path Loss Environment Interference Lossy Environment Mobile Radio System Network Coverage Optimisation Optimisation Problem Optimisation Technique Optimising Coverage Efficiency Power Constraint Probability Propagation Environment Radio Frequency Interference Radio Wave Propagation Resource Allocation Statistics
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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