Energy and Cost Footprint Reduction for 5G and Beyond With Flexible Radio Access Network

This paper focuses on Beyond fifth generation (B5G) non-linear data modeling and decision-making tools to optimize cost reduction versus coverage-QoS trade-off, in other words, the number of active Remote Radio Heads or Units (RRHs) needed according to traffic demands. The cost and energy optimizati...

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Bibliographic Details
Published in:IEEE access 2021, Vol.9, p.142179-142194
Main Authors: Guerra-Gomez, Rolando, Ruiz-Boque, Silvia, Garcia-Lozano, Mario, Saeed, Umar
Format: Article
Language:English
Subjects:
5G mobile communication
Accounting
Baseband
C-RAN
Cost analysis
Costs
Decision making
Integer programming
Linear programming
Modelling
Optimization
Quality of service
Quality of service architectures
Radio
radio network optimization
Radio networks
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Summary:This paper focuses on Beyond fifth generation (B5G) non-linear data modeling and decision-making tools to optimize cost reduction versus coverage-QoS trade-off, in other words, the number of active Remote Radio Heads or Units (RRHs) needed according to traffic demands. The cost and energy optimization are analytically expressed by modeling the complex relationships between input and output system parameters using realistic scenarios and traffic profiles for low, medium, and high traffic environments. The optimization tool is based on a multi-objective integer linear programming model, designed to reduce the network cost while maintaining a good coverage-QoS and accounting for capacity constraints, User Equipments (UEs), and different slices. Results at 3.6 and 28 GHz are presented by analyzing and comparing several Cloud Radio Access Network (C-RAN) split options in a heterogeneous deployment with Macro-RRHs (MRRHs) and Small-RRHs (SRRHs). Cost reductions ranging from 30 % to 70 % have been obtained depending on the scenario. This proposal allows mobile network operators (MNOs) to achieve further optimization, while providing better network diagnostics.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2021.3120765