Proceedings ArticleDOI
5G New Radio Mobility Performance in LEO-based Non-Terrestrial Networks
Enric Juan,Mads Lauridsen,Jeroen Wigard,Preben Mogensen +3 more
- pp 1-6
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In this paper, the authors presented a performance analysis of the conventional 5G NR HO algorithm in a LEO-based non-terrestrial networks (NTN) deployment and compared the HO performance in NTN with two 3GPP terrestrial scenarios - urban macro and high-speed train.Abstract:
As part of 3GPP standardization work for Release 17, non-terrestrial networks (NTNs) aim to bring 5G New Radio (NR) communications to unserved and isolated areas. Constellations of low Earth orbit (LEO) satellites have emerged as a promising asset for NTNs and a key enabler technology to provide truly seamless and ubiquitous connectivity through 5G. Varying and longer propagation delays compared to terrestrial networks, limited radio link budget and the inherent high-speed movement of LEO satellites introduce new challenges in the mobility management procedures. To guarantee robust service continuity and satisfactory user experience, the handover (HO) procedure in LEO satellite systems is critical. Motivated by this fact, this paper presents a first performance analysis of the conventional 5G NR HO algorithm in a LEO-based NTN deployment. We provide system-level simulations obtained for different values of HO margin and time-to-trigger. Furthermore, we compare the HO performance in NTN with two 3GPP terrestrial scenarios - urban macro and high-speed train. The simulation results show HO failures and radio link failures are a factor 10 higher for the NTN scenario, while the corresponding time in outage is 5 times longer. Finally, we analyze the key issues and suggest potential mobility enhancementsread more
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Journal ArticleDOI
Field Trial of a 5G Non-Terrestrial Network Using OpenAirInterface
Florian Völk,Thomas Schlichter,Florian Kaltenberger,Thomas Heyn,G. Casati,Robert T. Schwarz,Andreas Knopp +6 more
TL;DR: The results show that Open Source Software implementations running on general purpose platforms greatly support the research and standardization process for 5G-Beyond NTNs and can be a starting point to turn the vision of 6G protocols on-board the satellite into reality.
Proceedings ArticleDOI
An Overview of Channel Models for NGSO Satellites
TL;DR: In this article , the authors provide a comprehensive overview of NGSO channel models to facilitate the selection of the most appropriate channel based on the scenario requirements to be evaluated and/or analyzed.
Proceedings ArticleDOI
A Time-correlated Channel State Model for 5G New Radio Mobility Studies in LEO Satellite Networks
TL;DR: A Markov-based channel state model that takes into consideration the time correlations of the LOS variations along the satellite’s orbit and can accurately reflect the behaviour of the channel state variations of those scenarios, essentially leading to a realistic number of state changes per satellite pass.
Proceedings ArticleDOI
On the Standardization of Key Enabling Technologies in Non-Terrestrial Network Air-interface Design
TL;DR: In this article, the authors introduce the latest development of 5G standards for non-terrestrial networks (NTN) including deployment scenarios and system architectures in the 3rd Generation Partnership Project (3GPP).
Proceedings ArticleDOI
On the Performance of Handover Mechanisms for Non-Terrestrial Networks
TL;DR: In this paper , the authors compare the conventional measurement-based HO triggering mechanism with other alternatives such as distance, elevation angle, and timer-based methods in terms of the numbers of HOs, ping-pong HOs and radio link failures.
References
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Proceedings ArticleDOI
New frontiers for the mobile satellite interactive services
Eros Feltrin,Elisabeth Weller +1 more
TL;DR: In this article, the authors describe the approach adopted by Eutelsat together with some partners in order to solve these problems on different communication layers, in view of the launch of the satellite KA-SAT.
Proceedings ArticleDOI
Mobility Sensitivity Analysis for LTE-Advanced HetNet Deployments with Dual Connectivity
Simone Barbera,Lucas Chavarria Gimenez,Laura Luque Sanchez,Klaus I. Pedersen,Per Henrik Michaelsen +4 more
TL;DR: Trends and observations from simulations based on the 3GPP scenario are valuable, but should be supplemented by results from site-specific scenarios, as additional performance-determining effects are more accurately represented for such cases.
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