Cloud radio access network (C-RAN): a primer

In the era of mobile Internet, mobile operators are facing pressure on ever-increasing capital expenditures and operating expenses with much less growth of income. Cloud Radio Access Network (C-RAN) is expected to be a candidate of next generation access network techniques that can solve operators&#...

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Bibliographic Details
Published in:IEEE network 2015-01, Vol.29 (1), p.35-41
Main Authors: Wu, Jun, Zhang, Zhifeng, Hong, Yu, Wen, Yonggang
Format: Article
Language:English
Subjects:
Algorithms
Architecture
Architecture (computers)
Base stations
Cloud computing
Communications networks
Computer architecture
Interference
Internet
Mobile communication
Networks
Operators
Planes
Power demand
Radio
Radio access networks
Radio communication
Resource management
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Summary:In the era of mobile Internet, mobile operators are facing pressure on ever-increasing capital expenditures and operating expenses with much less growth of income. Cloud Radio Access Network (C-RAN) is expected to be a candidate of next generation access network techniques that can solve operators' puzzle. In this article, on the basis of a general survey of C-RAN, we present a novel logical structure of C-RAN that consists of a physical plane, a control plane, and a service plane. Compared to traditional architecture, the proposed C-RAN architecture emphasizes the notion of service cloud, service-oriented resource scheduling and management, thus it facilitates the utilization of new communication and computer techniques. With the extensive computation resource offered by the cloud platform, a coordinated user scheduling algorithm and parallel optimum precoding scheme are proposed, which can achieve better performance. The proposed scheme opens another door to design new algorithms matching well with C-RAN architecture, instead of only migrating existing algorithms from traditional architecture to C-RAN.
ISSN:0890-8044
1558-156X
DOI:10.1109/MNET.2015.7018201