Architecture of GPP based, scalable, large-scale C-RAN BBU pool

The concept of C-RAN is attractive for both academic and industry to bring innovative ideas for advanced wireless processing and reduce cost directly in mobile infrastructure. C-RAN could be one of direction of future mobile infrastructure, however, to achieve the goal of C-RAN is quite challenging, since it's domain specific cloud computing technology, in which real-time processing and huge amount of antenna data make it more difficult than traditional cloud computing. In the paper, together with the load analysis of C-RAN, one of GPP (e.g. x86) based C-RAN architecture is proposed targeted to scalable, large-scale BBU pool. The design philosophy is to efficiently reduce computation cost and power consumption by allocating computation/switch resource fitting the traffic need.