China Telecom released the 5G technical route? There are two schemes about the 5G architecture. On June 14, the 3GPP plenary meeting of the Communication Standardization Organization (TSG#80) approved the function freeze of the new 5G air interface SA (Independent Independent Networking) standard. In addition to the SA architecture, in February last year, 3GPP approved the early version of 5G Release 15 of NSA (non-independent networking) architecture. The core network of NSA architecture still adopts 4G network. He Zhiqiang said that the target network architecture of China Telecom's 5G is "three clouds", namely "access cloud", "control cloud" and "forwarding cloud". The "Three Clouds" 5G network will be a converged network, which can be flexibly deployed according to business scenarios. ?
China Telecom introduced in the white paper that China Telecom, the core network of 5G, adopts SA networking scheme, which realizes the collaboration between 4G and 5G networks through the interworking of core networks, and mainly meets the requirements of eMBB (Enhanced Mobile Broadband) scenarios in the initial stage. ?
The 5G core network based on service architecture will adopt cloud deployment; The 5G core network should have the carrying capacity of voice services. At the beginning, we adopted the scheme of retreating from 5G to 4G network, and provided voice service through VoLTE technology. ?
He Zhiqiang said that SA networking was chosen to give users a better experience, and users always wanted to use the best things. "Using SA can also avoid frequent network switching and complicated terminal problems of NSA."
Since the SA standard was frozen, this is the first time that China Telecom released a white paper that comprehensively expounded the views and overall strategy of 5G technology. ?