说明：  ORAN协议是为了适应迅猛增长的移动业务，移动网络及相关网络设备必须更加绿色、灵活及智能，实现方式应该更加软件化和虚拟化而产生
(Oran protocol is to adapt to the rapid growth of mobile services, mobile networks and related network devices must be more green, flexible and intelligent, and the implementation mode should be more software and virtualization)