Research of NTN Technical Scheme Based on 5G Network

NTN(Non-Terrestrial Network) is an important supplement to terrestrial cellular communication network defined by the 3rd generation partnership project (3GPP), which marks that the application of 5G technology has moved from land communication to space communication. Firstly, the progress and key technologies of 5G NTN standard of 3GPP Release 17 were introduced, including the differences between 5G NTN and 5G TN. Then, 5G NTN enhancement technology of 3GPP Release 18 are presented. Finally, the future technological evolution of the integration of NTN and TN was prospected. Through the research and standard analysis of 5G NTN technology, the technical route of 5G and satellite communication integration was clarified, which provided a basis for the subsequent research and design of 6G air, space, land and sea integration system.