2. Independent networking (SA) refers to a new 5G network, including new base stations, backhaul links and core networks; Non-independent network (NSA) refers to deploying a 5G network using the existing 4G infrastructure. The 5G carrier based on NSA architecture only carries user data, and its control signaling is still transmitted through the 4G network.
3. Compared with SA, the advantages of NSA mainly include:
(1) With the help of mature 4G networks, the coverage of 5G single station can be expanded through joint networking with 4G (NSA).
(2)2)NSA was finalized earlier than SA standard, so the corresponding products and testing work have been basically completed, and the products are more mature in theory.
(3) Under the NSA networking, the 5G base station will use the existing 4G core network to save the construction of the 5G core network.
One is the mobile phone adopting Qualcomm Snapdragon X50 baseband scheme, which is also the scheme adopted by most Android phones on the market at present, but this scheme only supports NSA mode networking, and the other is Huawei Ba Long 5000 baseband scheme, which supports NSA and SA networking modes.