Abstract:

In June 2019, the Ministry of Industry and Information Technology officially issued a 5G commercial license, which accelerated the deployment of China’s 5G network. The 5G international standards developed by the 3GPP include non-standalone (NSA) and standalone (SA) modes. In view of the differences between the two, the basic concepts of NSA and SA were introduced. The main characteristics of the two networking modes were compared with performance, work difficulties and key points. The two routes from NSA to SA network evolution and two issues that need attention were analyzed, and the rapid growth of China’s 5G industry was pointed out. In particular, the operating companies had implemented recommendations for implementing development strategies and selecting appropriate networking architectures.

Key words: 5G, networking mode, non-standalone, standalone, evolution route