Comprehensive analysis of 3GPP NTN roadmap progression, covering protocol layer extensions for large round-trip times (RTT), high Doppler shift compensation, hybrid automatic repeat request (HARQ) disabling, and regenerative on-board gNodeB split architectures.
Deploying 3gpp ntn rel-17/18 evolution in non-terrestrial environments requires solving fundamental physics constraints: path loss over 1000km distances, rapid carrier frequency shifts due to Doppler effects, and power-thermal limits of spaceborne hardware. The architecture provides deterministic mitigation strategies.
The protocol workflow for 3gpp ntn rel-17/18 evolution coordinates physical layer signal acquisition with higher-layer transport resilience. By leveraging open-loop ephemeris calculations and adaptive retransmission timers, communication links maintain uninterrupted throughput across satellite handoffs.