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ESA Open Invitation to Tender: 1-11315
Open Date: 13/10/2022 10:08 CEST
Closing Date: 13/01/2023 13:00 CEST

The objective of the activity is to develop a complete end-to-end 5G NR physical layer solution for railway control communications over satellite. A demonstrator will be developed to assess its performance. Targeted Improvements: Enabling Future Railway Mobile Communication System services via satellite. Providing ETSI RT group with necessary inputs for standardisation. Description: The Future Railway Mobile Communication System (FRMCS) is planned to be operational before GSM-R's predicted saturation in 2030. ETSI has already started to prepare the FRMCS standard with SATCOM as a component of the future system. The terrestrial component will use 5G NRas the air interface and therefore it is expected that using the same waveform over satellite will ease their integration. To support the FRMCS standardization, multiple companies have started complete end-to-end physical layer studies using 5G NR for the terrestrial link with their results being an input to the drafting of the ETSI TS documents. For SATCOM to have a strong position in FRMCS,it is essential to have a similar exercise for the use of 5G NR physical layer over satellite. Current and planned ESA activities on FRMCS focus mostly on the link layer and above for what regards the user, the control and the management planes. In terms of physical layer, there is a lack of complete end-to-end simulations that demonstrate the 5G NR physical layer performance over satellite, especially considering the specific railway channel features such as very high speeds (i.e., up to 500Km/h) and its characteristic multipath and interference profiles, which are essential topics for the FRMCS standardization. To fill this gap, this activity will develop a complete end-to-end 5G NR physical layer solution for the satellite link of FRMCS and its performance will be demonstrated via simulations. For this purpose, the activity will first identify suitable FRMCS system scenarios including available satellite frequency bands for 5G NR. For each of the scenarios, the railway channel via satellite will be studied in detail to define realistic channel models that will be implemented in SW. An end-to-end 5G NR physical layer implementation (e.g., OAI or other developed stacks/libraries) will be then integrated with the channel models to form a demonstrator capable of emulating realistically railway communications in a variety of operational conditions such as train speeds (e.g., up to 500 km/h) and locations (e.g., rural, urban, hilly terrain etc.). The demonstrator will support a variety of frequency bands in line with the scenarios (e.g., L-band, S-band, mm-wave) and antenna options; both forward and return links will be considered. All performance shortcomings in the operational conditions will lead to the adaptation of physical layer elements that will be tested with the demonstrator to ensure the compliance of the satellite link with the FRMCS requirements. In addition, for the purpose of future real field demonstrations, support for the integration of the developed 5G NR physical layer solution on board real platforms shall be provided by the developers of the solution. The outcome of the work shall also be made available to feed the ETSI RT FRMCS standardization.

Directorate: Directorate Telecom Integrated Applica
Estabilishment: ECSAT
ECOS Required: No
Classified: No
Price Range: > 500 KEURO
Authorised Contact Person: Nathalie Dorval
Initiating Service: TIA-TTG
IP Measure: N/A
Prog. Reference: E/0534-03A - 5G-Other Act. Prod&T
Tender Type: Open Competition
Technology Keywords: 6-A-II-Telecom Signal Processing
Products Keywords: 2-L-5-a-SW for RF Comm. design, analysis, simulation, etc.

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