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Energy‐efficient radio remote units placement for single‐user uplink in C‐RAN
Author(s) -
Shao Shihai,
Han Liang,
Shen Ying,
Tang Youxi
Publication year - 2012
Publication title -
concurrency and computation: practice and experience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.309
H-Index - 67
eISSN - 1532-0634
pISSN - 1532-0626
DOI - 10.1002/cpe.2877
Subject(s) - c ran , radio access network , computer science , energy consumption , ran , efficient energy use , computer network , telecommunications link , energy (signal processing) , cloud computing , quality of service , remote radio head , access network , telecommunications , base station , transmitter , engineering , electrical engineering , operating system , mobile station , channel (broadcasting) , statistics , mathematics
SUMMARY Because of the increasing energy consumption in radio access networks, a new radio access network called Cloud radio access network (C‐RAN) has attracted increasing attention. In C‐RAN, the distributed radio remote units (RRUs) are located in different sites and the placement of RRUs will influence the system performance. However, few researches investigate the optimal RRU placement from the perspective of energy efficiency, which is one of the most important characteristics of C‐RAN. In this paper, we first derive the energy efficiency of C‐RAN to achieve certain QoS requirements considering the circuitry energy consumption. Then, we obtain the optimal placement of RRUs by minimizing the consumed energy per bit. Numerical results are also presented to validate the analysis. Copyright © 2012 John Wiley & Sons, Ltd.