Compared with the 2 G/3 G signaling network and 4 G signaling network

introduces 5 G signaling network architecture

including 3 GPP’s signaling network architecture defined in R15 and R16. Then

based on the requirements and characteristics of 5 G core network element signaling exchange

it analyzes and compares the four signaling network networking modes. Finally

it proposes the 5 G signaling network networking scheme after introducing SCP

and the subsequent convergence of NRF and SCP proposal.