| C-RAN is a kind of green wireless access network architecture (Clean system) which is based on centralized processing, collaborative radio and real-time cloud computing infrastructure. Its essence is to reduce the base station through the realization of the number of rooms to reduce energy consumption, use of collaboration, virtualization, resource sharing and dynamic scheduling, improved spectral efficiency, in order to achieve low cost, high bandwidth and flexibility of operation. C-RAN’s overall goal is to address the rapid development of mobile Internet brought to the operator the multifaceted challenges, the pursuit of sustainable business and future profit growth.According to the plan, the move will be implemented in three phases C-RAN scheme and and ultimately achieve in 3 to 5 years, the introduction of cloud computing-based real-time processing in order to achieve the virtual base station, based on a common processor and open platform to support multi-mode software radio. As the leading mobile radio access network proposed new structure, the beginning of the deployment forces to focus on the construction of multi-joint, including the NGMN and 3GPP and other international organizations, Tsinghua University and Beijing University of Posts and other research institutions, IBM, and intel and other IT vendors, ZTE and Datang and other domestic equipment manufacturers and Nokia Siemens Networks and other international equipment manufacturers have joined together to move the C-RAN camp.This paper details the C-RAN architecture system and its technical characteristics, the pool system is an intelligent carrier case, described C-RAN technologies and their practical application of the impact on the existing network.Research goal in the following areas:1.This article describes the technical characteristics of C-RAN system, described its key technologies of network effects.2.To study the C-RAN network architecture and feasibility analysis.3.To C-RAN architecture for the case:the smart carrier pool system, for example, describes in detail the principles of its composition and compared before and after reference to intelligent network carrier pool system performance.4.The beginning of this article describes the development of C-RAN architecture, history and architecture, at the end describes the future direction of C-RAN. |
