What is 5G NR 3GPP?

5G NR (New Radio) is a new radio access technology (RAT) developed by 3GPP for the 5G (fifth generation) mobile network. It was designed to be the global standard for the air interface of 5G networks. … The study of NR within 3GPP started in 2015, and the first specification was made available by the end of 2017.

In a 5G network, the function of the HSS is split into the authentication server function (AUSF), the UDM, and the UDR (when it is a stateless architecture). The AUSF authenticates servers and provides encryption keys. The UDM stores and manages the data.

5G Data call establishes virtual circuits between calling and called party for data transmission and reception over 5G network . There are two types of Data calls viz. Mobile Originating packet switched call and Mobile Terminating packet switched call.