Kodheli, XheljaSolaija, Muhammad Sohaib J.Arslan, Hüseyin2024-08-052024-08-052024Kodheli, X., Solaija, M. S. J. ve Arslan, H. (2024). Performance comparison of handover mechanisms for leo networks in s and ka-bands. 25th IEEE Wireless Communications and Networking Conference, WCNC 2024, Dubai, April 21-24, 2024. http://dx.doi.org/10.1109/WCNC57260.2024.10570666979835030358297983503035991525-3511http://dx.doi.org/10.1109/WCNC57260.2024.10570666https://hdl.handle.net/20.500.12511/12762Low-Earth orbit (LEO) non-terrestrial networks (NTNs) have become increasingly popular due to their ability to provide high-bandwidth communication in otherwise unserved regions. However, this comes at the cost of high satellite mobility, necessitating efficient handover (HO) strategies. Till now the focus has been on the S-band, however Ka-band is expected to be deployed for high-bandwidth applications necessitating HO studies for higher frequency bands. To address this, we evaluate the performance of the conventional received power-based HO, as well as alternatives such as elevation angle and distance-based triggers for Ka-band LEO networks, and compare them with S-band frequencies. Moreover, a dynamic threshold approach is also evaluated in terms of the number of HOs, unnecessary handovers (UHOs), radio link failures (RLFs), and distributions of downlink carrier-to-noise-plus-interference ratio (CNIR) and mean time-of-stay of a user in a cell. The obtained results indicate the efficacy of power-based mechanisms for the S-band while showing that the alternative methods provide a much better balance at the Ka-band in terms of the overhead and the overall communication link quality.eninfo:eu-repo/semantics/openAccess5GHandover (HO)Ka-BandLow-Earth Orbit (LEO)Non-Terrestrial Network (NTN)Radio Link Failure (RLF)S-BandSatelliteVery-Small-Aperture Terminal (VSAT)Conference Object10.1109/WCNC57260.2024.10570666WOS:0012685693001622-s2.0-85198828572N/A