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Volume 10
Issue 17
10.3390/electronics10172162
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Article

On Analyzing Beamforming Implementation in O-RAN 5G

by
Mustafa Mohsin
1,
Jordi Mongay Batalla
1,*,
Evangelos Pallis
2,
George Mastorakis
2,
Evangelos K. Markakis
2 and
Constandinos X. Mavromoustakis
3
1
Institutte of Telecommunications, Warsaw University of Technology, 00-665 Warsaw, Poland
2
Department of Electrical and Computer Engineering, Hellenic Mediterranean University, 71004 Crete, Greece
3
Department of Computer Science, University of Nicosia, Nicosia 1700, Cyprus
*
Author to whom correspondence should be addressed.
Electronics 2021, 10(17), 2162; https://doi.org/10.3390/electronics10172162
Submission received: 14 July 2021 / Revised: 27 August 2021 / Accepted: 31 August 2021 / Published: 4 September 2021
(This article belongs to the Special Issue Telecommunication Networks)
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Abstract

The open radio access network (O-RAN) concept is changing the landscape of mobile networks (5G deployment and 6G research). O-RAN Alliance’s suggestions that O-RAN can offer openness and intelligence to the traditional RAN vendors will enable the capability for multi-vendors to re-shape the RAN structure and optimize the network. This paper positions the main research challenges of the O-RAN approach in regards to the implementation of beamforming. We investigate the O-RAN architecture and the configurations of the interfaces between O-RAN units and present the split options between the radio and distributing units in terms of O-RAN specification and 3GPP standards. From this point, we discuss the beamforming methods in O-RAN, addressing challenges and potential solutions, and suggest the introduction of the zero-forcing equalizer as a precoding vector in the channel-information-based beamforming method. This may be one of the solutions for achieving flexibility in a high-traffic communication environment while reducing the radio unit interferences caused by implanting the precoding in the open radio unit.
Keywords: 5G; radio access network; beamforming; massive MIMO; open interface; O-RAN 5G; radio access network; beamforming; massive MIMO; open interface; O-RAN

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MDPI and ACS Style

Mohsin, M.; Batalla, J.M.; Pallis, E.; Mastorakis, G.; Markakis, E.K.; Mavromoustakis, C.X. On Analyzing Beamforming Implementation in O-RAN 5G. Electronics 2021, 10, 2162. https://doi.org/10.3390/electronics10172162

AMA Style

Mohsin M, Batalla JM, Pallis E, Mastorakis G, Markakis EK, Mavromoustakis CX. On Analyzing Beamforming Implementation in O-RAN 5G. Electronics. 2021; 10(17):2162. https://doi.org/10.3390/electronics10172162

Chicago/Turabian Style

Mohsin, Mustafa, Jordi Mongay Batalla, Evangelos Pallis, George Mastorakis, Evangelos K. Markakis, and Constandinos X. Mavromoustakis. 2021. "On Analyzing Beamforming Implementation in O-RAN 5G" Electronics 10, no. 17: 2162. https://doi.org/10.3390/electronics10172162

APA Style

Mohsin, M., Batalla, J. M., Pallis, E., Mastorakis, G., Markakis, E. K., & Mavromoustakis, C. X. (2021). On Analyzing Beamforming Implementation in O-RAN 5G. Electronics, 10(17), 2162. https://doi.org/10.3390/electronics10172162

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