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

Enric Juan, Mads Lauridsen, Jeroen Wigard, Preben Mogensen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

1 Citation (Scopus)

Abstract

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.
Original languageEnglish
Title of host publication2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring)
Number of pages6
PublisherIEEE Communications Society
Publication date22 Jun 2022
Pages1-6
Article number9860992
ISBN (Print)978-1-6654-8244-8
ISBN (Electronic)978-1-6654-8243-1
DOIs
Publication statusPublished - 22 Jun 2022
Event2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring) - Helsinki, Finland
Duration: 19 Jun 202222 Jun 2022

Conference

Conference2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring)
LocationHelsinki, Finland
Period19/06/202222/06/2022
SeriesI E E E V T S Vehicular Technology Conference. Proceedings
ISSN1550-2252

Keywords

  • Vehicular and wireless technologies
  • Satellite constellations
  • Satellite broadcasting
  • Low earth orbit satellites
  • Handover
  • Extraterrestrial measurements
  • Radio links

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