Baseband Processing Units Virtualization for Cloud Radio Access Networks

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Abstract
In cloud radio access networks (C-RANs), the baseband processing units (BBUs) from traditional base stations (BSs) are virtualized and moved into a single centralized location. By virtualization, the computing resources of BBUs can be dynamically shared among all cells, enabling a significant improvement in computing resource utilization and power efficiency. In this letter, we propose a BBUs virtualization scheme that minimizes the power consumption with a linear computational complexity order. The scheme is based on a heuristic simulated annealing (HSA) algorithm, which combines a bin packing algorithm with SA. Simulation results show that the HSA effectively decreases system power consumption when compared to standard approaches.
Funding Information
  • National Natural Science Foundation of China (61431001)
  • Chinese Hi-tech National R&D Program 863 (2014AA01A703)
  • Beijing Natural Science Foundation Major Project (61222103)
  • New Technology Star Plan of Beijing (xx2013052)
  • Australian Research Council (ARC) (DP130102479, E150101704)

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