Peculiarities of Traffic and QoS management in 5G NTN networks

The rapid advancements in Low Earth Orbit (LEO) satellite technologies promise high bandwidth and lower costs, making them crucial components for the future 6G networks. However, these orbits introduce a range of challenges not present in traditional Geosynchronous Orbit (GEO) systems, such as mobility issues, smaller coverage areas, and the need for inter-satellite communications. Within the scope of the TRANTOR project, we aim to investigate the complexities and peculiarities involved in utilizing LEO satellites for global communications. In this technical paper we will focus on reviewing the dynamic traffic and Quality of Service (QoS) management of NTN networks primarily being based on the 3GPP document "Technical Specification Group Radio Access Network; Solutions for NR to support non-terrestrial networks, NTN, Release 16" (3GPP TR 38.821 V16.1.0 (2021-05)).