Title: Efficient Algorithm for Baseband Unit Pool Planning in Cloud Radio Access Networks
Abstract: Cloud Radio Access Network (C-RAN) is deemed as a promising architecture to enhance the spectrum and energy efficiency of the cellular systems. The key feature of the C-RAN is to separate the baseband processing function from conventional remote radio heads (RRHs) and process the baseband signals in a centralized baseband units (BBUs) pool to obtain statistical multiplexing gain. In this paper, we investigate the BBU pool placement problem in the C-RAN, where we try to minimize the deployment cost of the BBUs while considering the processing capacity of the BBUs, the traffic demands of the RRHs and the signal synchronization among them. Our general problem formulation leads to an NP-hard integer programming optimization task. We propose an efficient local search algorithm to address it. Numerical results show that the proposed algorithm converges quickly. Moreover, it yields a performance-guaranteed placement scheme for the BBU pool in the C-RAN.
Publication Year: 2016
Publication Date: 2016-05-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 11
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