Millimeter-Wave Downlink Coverage Extension Strategies

Traditionally, the uplink and downlink in a cellular network are associated with the same base station and the same frequency band since it promotes simpler network design, maintenance, and operation because of reduced complexity. However, when deploying millimeter-wave (mmWave) spectrum, network co...

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Bibliographic Details
Published in:IEEE communications magazine 2020-09, Vol.58 (9), p.74-78
Main Authors: Baenke, Jeffrey, Chaudhuri, Kausik Ray, Deshpande, Abhishek, Halder, Atanu, Irizarry, Michael, Saxena, Narothum, Sharma, Sanjay, Yang, Roberto
Format: Magazinearticle
Language:English
Subjects:
5G mobile communication
Cellular communication
Cellular networks
Decoupling
Downlink
Downlinking
Frequencies
Millimeter waves
Monte Carlo methods
Propagation losses
Radio equipment
Throughput
Uplink
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Summary:Traditionally, the uplink and downlink in a cellular network are associated with the same base station and the same frequency band since it promotes simpler network design, maintenance, and operation because of reduced complexity. However, when deploying millimeter-wave (mmWave) spectrum, network coverage has limitations hinging on the nature of the mmWave propagation characteristics relative to the traditional sub 6 GHz frequency bands. In this article, we present a method for an extension of the mmWave downlink coverage by demonstrating the benefits of decoupling the reverse and forward link frequencies and by leveraging macro-type radio deployment heights to maximize the line-of-sight coverage. The accompanying link budget analysis and coverage simulations quantify the benefit of the coverage extension methodology to be as much as 6.8 dB while extending possible coverage range distance to greater than 2 km.
ISSN:0163-6804
1558-1896
DOI:10.1109/MCOM.001.2000046