The Open RAN System Architecture and mMIMO

摘要

This article has provided a tutorial on the architecture of the O-RAN and the approach to standardizing the interfaces between the RU, DU and CU to achieve interoperability and provide an environment for new entrants and network innovation. mMIMO is one RAN implementation to improve data capacity in areas with high mobile traffic, and the article discussed the functional architecture of a mMIMO RAN meeting O-RAN standards.A future article will discuss the mMIMO architecture and performance parameters of the RU, applying the concepts to the design of two AAUs: for the North American band from 3.7 to 3.98 GHz and the European band from 3.3 to 3.8 GHz.