Optimization on 5G NR Transmission Scheme for Integrated TTC&OC System
Year: 2025
Type: conference-paper
Abstract: The aerospace telemetry, tracking, command and operation control (TTC&OC) network is a critical component of space-ground integrated systems. However, existing TTC&OC transmission schemes are unable to support the increasing service requirements with the rapid growth in the number of spacecrafts. 5G new radio (NR) non-terrestrial network (NTN) technology characterized by high capacity, low latency, and high reliability, has provided a new approach to address this issue. In this study, we propose a space-ground integrated aerospace TTC&OC network architecture by introducing transparent relay and 5G NR transmission, which expands service coverage through satellite-ground cooperative operations and space-ground complementarity. Based on this architecture, a dedicated TTC&OC transmission scheme is developed by incorporating Luby transform (LT) codes as outer codes in concatenated coding. Mathematical analysis demonstrates that the rateless property of LT codes can effectively reduce retransmission-induced waiting latency, enabling highly reliable and low-latency data transmission. Simulations on a 5G NR link-level simulation platform verifies that the proposed transmission scheme with concatenated coding can achieve 2 ∼ 6 dB reliability improvement and 30% ∼ 67% latency reduction over the existing 5G NR solution in various scenarios.
Authors: Ziji Guo, Danpu Liu, Zhilong Zhang, Guixin Li, Wei Zhang
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7127038911