SaT5G_White_Paper_Architecture_2019（通信架构白皮书）.pdf

Satellite and Terrestrial Network for 5G Architecture Whitepaper June 2019 SaT5G (761413) SaT5G Architecture Whitepaper June 2019 Table of Contents Introduction3 1 Satellite as a key enabler for 5G requirements 4 1.1 Satellite system fundamentals 4 1.1.1 General satellite system architecture 4 1.1.2 Satellite orbits 4 1.1.3 Satellite Coverage 4 1.1.4 Satellite Capacity5 1.1.5 Satellites are good at multicast 5 1.2 New trends in satellite communications 5 1.3 SaT5G use cases and scenarios 7 2 Satellite positioning in 5G system architecture 9 2.1 Satellite connectivity in the 5G system architecture 9 2.2 Direct UE access 10 2.3 Indirect UE access of backhaul 10 3 Backhaul implementation options and related challenges11 3.1 Transport Network based implementation options 11 3.2 Relay Node based implementation options11 3.3 Challenges for implementation options and timeline 13 4 Enablers for 5G satellite-terrestrial integration 14 4.1 Reference architecture 14 4.2 Features for integrated satellite and terrestrial 5G network 14 4.3 Satellite based edge network delivery16 Conclusion18 Bibliography19 Page 2 of 20 This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 761413 . SaT5G (761413) SaT5G Architecture Whitepape