PAGE CONTENTS
Objectives
3GPP standardized the NTN (Non-Terrestrial-Networks) feature in Release17. Now, detailed study work is required to come from a high-level definition to a commercial deployed NTN service based on the multiple architecture options available, based on the standard.
In this project (covering the development phase), Nokia studied all architecture options and provides a future looking analysis of the multiple scenarios.
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Challenges
There are multiple architecture options impacting an NTN service. To list the major ones:
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Satellite GEO/MEO/LEO constellations,
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On-Board Edge computing capabilities,
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Inter-Satellite Links (ISL),
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Hierarchy of satellites,
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Transparent/regenerative/intelligent payload with all its flavours,
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Impact to achieve the required service KPI’s
System Architecture
The main building blocks of a 3GPP NTN service are shown in next functional diagram:
Complementing the mobile terrestrial deployment (composed out of a mobile core and a gNodeB), the new Release 17 phones will now also include satellite service. Multiple architecture options are available, from just reflecting the radio signal (transparent mode) to hosting the gNB (or parts of it) on the satellite and even evolving to the intelligent payload, deploying mobile core elements and SEC/RIC on the satellite.
Plan
The project covers only the development phase, with the final document delivery mid of June.
Current Status
The activity was kicked off in March 2024 with the MTR (Mid-Term-Review) on April 29. The completed study was distributed to ESA on June 20th 2024.
