Cloud RAN for Mobile Networks - a Technology Overview

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Checko, Aleksandra ; Christiansen, Henrik Lehrmann ; Yan, Ying ; Scolari, Lara ; Kardaras, Georgios ; Berger, Michael Stübert ; Dittmann, Lars (2014)
  • Related identifiers: doi: 10.1109/COMST.2014.2355255
  • Subject: Cloud RAN | Mobile networks | Small cell | eICIC | CoMP | Virtualization | IQ Compression | CPRI

Cloud Radio Access Network (C-RAN) is a novel mobile network architecture which can address a number of challenges the operators face while trying to support growing end-user’s needs. The main idea behind C-RAN is to pool the Baseband Units (BBUs) from multiple base stations into centralized BBU Pool for statistical multiplexing gain, while shifting the burden to the high-speed wireline transmission of In-phase and Quadrature (IQ) data. C-RAN enables energy efficient network operation and possible cost savings on base- band resources. Furthermore, it improves network capacity by performing load balancing and cooperative processing of signals originating from several base stations. This article surveys the state-of-the-art literature on C-RAN. It can serve as a starting point for anyone willing to understand C-RAN architecture and advance the research on C-RAN
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