Performance Evaluation of the 5G NR Conditional Handover in LEO-based Non-Terrestrial Networks

Enric Juan; Mads Lauridsen; Jeroen Wigard; Preben Mogensen

doi:10.1109/WCNC51071.2022.9771987

Performance Evaluation of the 5G NR Conditional Handover in LEO-based Non-Terrestrial Networks

Enric Juan, Mads Lauridsen, Jeroen Wigard, Preben Mogensen

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

8 Citations (Scopus)

Abstract

The development of non-terrestrial networks (NTN) aims to satisfy the requirements of ubiquitous and seamless coverage for fifth-generation (5G) services. Low Earth orbit (LEO) satellites introduce challenging mobility requirements to the 5G New Radio (NR) radio resource management procedures. Current research shows that the baseline 5G NR UE-assisted network-controlled handover (HO) procedure, meant for terrestrial scenarios, fails to ensure continuous and satisfactory service in LEO-based NTN. The conditional handover (CHO), specified by 3GPP in Rel-16, was designed for terrestrial networks to enhance mobility robustness by making HO decisions earlier. In this work, we conduct system-level simulations to evaluate the 5G NR mobility performance of the CHO in a LEO-based NTN with Earth-moving cells scenario. The simulation results show that the CHO procedure reduces the radio link failures and handover failures to 0 but increases the unnecessary HO rate by more than 60% in comparison with the baseline HO, which leads to an increase of the signalling and measurement reporting. Finally, future research directions are identified to address the increase of the signalling overhead by exploiting the predictability of the satellite’s movement.

Original language	English
Title of host publication	2022 IEEE Wireless Communications and Networking Conference (WCNC)
Number of pages	6
Publisher	IEEE Communications Society
Publication date	13 Apr 2022
Pages	2488-2493
Article number	9771987
ISBN (Print)	978-1-6654-4267-1
ISBN (Electronic)	978-1-6654-4266-4
DOIs	https://doi.org/10.1109/WCNC51071.2022.9771987
Publication status	Published - 13 Apr 2022
Event	2022 IEEE Wireless Communications and Networking Conference (WCNC) - Austin, TX, USA Duration: 10 Apr 2022 → 13 Apr 2022

Conference

Conference	2022 IEEE Wireless Communications and Networking Conference (WCNC)
Location	Austin, TX, USA
Period	10/04/2022 → 13/04/2022

Keywords

5G mobile communication
Simulation
Satellite broadcasting
Low earth orbit satellites
Interference
Handover
Radio links

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10.1109/WCNC51071.2022.9771987

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Cite this

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title = "Performance Evaluation of the 5G NR Conditional Handover in LEO-based Non-Terrestrial Networks",

abstract = "The development of non-terrestrial networks (NTN) aims to satisfy the requirements of ubiquitous and seamless coverage for fifth-generation (5G) services. Low Earth orbit (LEO) satellites introduce challenging mobility requirements to the 5G New Radio (NR) radio resource management procedures. Current research shows that the baseline 5G NR UE-assisted network-controlled handover (HO) procedure, meant for terrestrial scenarios, fails to ensure continuous and satisfactory service in LEO-based NTN. The conditional handover (CHO), specified by 3GPP in Rel-16, was designed for terrestrial networks to enhance mobility robustness by making HO decisions earlier. In this work, we conduct system-level simulations to evaluate the 5G NR mobility performance of the CHO in a LEO-based NTN with Earth-moving cells scenario. The simulation results show that the CHO procedure reduces the radio link failures and handover failures to 0 but increases the unnecessary HO rate by more than 60% in comparison with the baseline HO, which leads to an increase of the signalling and measurement reporting. Finally, future research directions are identified to address the increase of the signalling overhead by exploiting the predictability of the satellite{\textquoteright}s movement.",

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Juan, E, Lauridsen, M, Wigard, J & Mogensen, P 2022, Performance Evaluation of the 5G NR Conditional Handover in LEO-based Non-Terrestrial Networks. in 2022 IEEE Wireless Communications and Networking Conference (WCNC)., 9771987, IEEE Communications Society, pp. 2488-2493, 2022 IEEE Wireless Communications and Networking Conference (WCNC), 10/04/2022. https://doi.org/10.1109/WCNC51071.2022.9771987

Performance Evaluation of the 5G NR Conditional Handover in LEO-based Non-Terrestrial Networks. / Juan, Enric; Lauridsen, Mads; Wigard, Jeroen et al.
2022 IEEE Wireless Communications and Networking Conference (WCNC). IEEE Communications Society, 2022. p. 2488-2493 9771987.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

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Performance Evaluation of the 5G NR Conditional Handover in LEO-based Non-Terrestrial Networks

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