An ASIP based physical layer virtualization method of centralized radio access network

With the rapid increasing demand on the data traffic and energy efficiency, centralized radio access network architecture is proposed for next generation communication. Similar to the VM (Virtual Machine) running on the cloud computer servers, V-BS (Virtual Base Station) is proposed. Problem exists since characteristics of V-BS PHY layer tasks are different from traditional computing tasks in the cloud-computing, such as time constraint, data dependency and heterogeneous mapping. This paper proposed a new virtualization method based on ASIP (Application Specified Instruction Set Processor) architecture, with consideration of both scheduling efficiency and resource utilizing. Experiments are made to evaluate the validation of the new virtualization method.