On June 26th, China Telecom released the White Paper of China Telecom's 5G Technology at the 218 Shanghai Mobile World Congress. He Zhiqiang, general manager of China Telecom Technology Department, said at the meeting that China Telecom adopted SA standard to set up a 5G network, and the initial 5G voice dropped back to 4G network. ?
China Telecom released the 5G technical route? There are two schemes about the 5G architecture. On June 14th, the 3GPP plenary meeting of the Communication Standardization Organization (TSG#8) approved the function freeze of the new 5G air interface SA(standalone Independent Networking) standard. In addition to SA architecture, in December last year, 3GPP approved the early version of 5G Release15 of NSA(non-standalone networking) architecture. The core network of NSA architecture still adopts 4G network. He Zhiqiang said that China Telecom's 5G target network architecture is "three clouds", namely "access cloud", "control cloud" and "forwarding cloud". The "Three Clouds" 5G network will be a converged network that can be flexibly deployed according to business scenarios. ?
China Telecom introduced in the white paper that China Telecom, the 5G core network, adopted SA networking scheme, which realized the collaboration between 4G and 5G networks through the interoperability of core networks, and mainly met the requirements of eMBB (Enhanced Mobile Broadband) scenarios in the initial stage. ?
the 5G core network based on service architecture will be deployed in the cloud; The 5G core network should have the carrying capacity of voice services. At the initial stage, it adopts the scheme of falling back from 5G to 4G network, and provides voice services 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 the problems of frequent network transformation and complex terminals of NSA." ?
Since the SA standard was frozen, it is the first time that China Telecom has released a white paper that comprehensively expounds the views and overall strategies of 5G technology. ?