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International Journal of Satellite Communications and Networking
Article . 2025 . Peer-reviewed
License: Wiley Online Library User Agreement
Data sources: Crossref
DBLP
Article . 2025
Data sources: DBLP
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An Integrated LEO Communication and PNT System for Beyond 5G NTN

Authors: Riccardo De Gaudenzi;

An Integrated LEO Communication and PNT System for Beyond 5G NTN

Abstract

ABSTRACTThis paper proposes a pragmatic approach to integrate communication (COM) and positioning navigation timing (PNT) services in (beyond) 5G ((B)5G) low Earth orbiting (LEO) satellite nonterrestrial networks (NTN). The goal is to optimize performance and minimize complementary PNT service costs. The current third generation partnership program (3GPP) fifth generation (5G) standard incorporates positioning reference signal (PRS) for enhancing user equipment (UE) positioning accuracy. However, this approach relies on network connectivity and is not suitable for UE standalone PNT service provision. Additionally, PRS exploitation in a NTN satellite constellation shows major issues on top of its know limitations in terrestrial networks (TNs). To address these limitations, we propose a solution inspired by the Chinese multimedia digital broadcasting standard (CMMB) standard, adapted for satellite NTN. This approach involves broadcasting a dedicated direct‐sequence spread‐spectrum (DS‐SS) PNT signal on‐top of the primary COM signal. This allows for efficient PNT service provision without compromising the performance of the core COM services. By decoupling PNT and COM services, we can optimize the satellite payload design providing wide area coverage for the PNT signal with reduced interference on the COM narrow beams, thus optimizing overall system performance. The proposed solution offers a promising and cost effective approach to enable accurate and reliable PNT services in satellite NTN, even in challenging environments with limited network connectivity.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
9
Top 10%
Top 10%
Top 10%
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