Location-Based Handover Triggering for Low-Earth Orbit Satellite Networks

Enric Juan, Mads Lauridsen, Jeroen Wigard, Preben Mogensen

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1 Citationer (Scopus)

Abstrakt

Broadband low Earth orbit (LEO) satellite constellations are a reality. The integration of satellite and terrestrial systems for mobile communications is taking-off with the development of non-terrestrial networks (NTN) and the ongoing deployment of private constellations. Due to the highly mobile nature of LEO satellites, one of the critical research areas is the design of the mobility mechanisms to ensure robust service continuity for the end-user. Recent studies in the domain of Earth-moving cells have shown that measurement-based handover (HO) triggering events cannot guarantee a low number of radio link failures without an increase in signalling and measurement reporting. In this work, we present a new HO triggering event that exploits the predictable movement of LEO satellites and uses the distance between the user’s location and the centre of the moving cells on the ground. The performance of the proposed solution is evaluated with system-level simulations and compared against the measurement-based baseline HO and Rel-16 Conditional HO (CHO). It is found that the location-based HO triggering event completely eliminates the HO failures as well as unnecessary HOs and ping-pongs. As a result, the location-based HO triggering event extends the mean time-of-stay from values below 2 s to 4.8 s where the optimal mean time-of-stay is 4.9 s.
OriginalsprogEngelsk
Titel2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring)
Antal sider6
ForlagIEEE Communications Society
Publikationsdato22 jun. 2022
Sider1-6
Artikelnummer9860992
ISBN (Trykt)978-1-6654-8244-8
ISBN (Elektronisk)978-1-6654-8243-1
DOI
StatusUdgivet - 22 jun. 2022
Begivenhed2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring) - Helsinki, Finland
Varighed: 19 jun. 202222 jun. 2022

Konference

Konference2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring)
LokationHelsinki, Finland
Periode19/06/202222/06/2022
NavnI E E E V T S Vehicular Technology Conference. Proceedings
ISSN1550-2252

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