Kavli Affiliate: Feng Wang
| First 5 Authors: Feng Wang, Giovanni Geraci, Tony Q. S. Quek, ,
| Summary:
Non-terrestrial networks (NTN) offer potential for efficient content
broadcast in remote regions, thereby extending the reach of digital services.
In this paper, we introduce a novel approach to optimize wireless edge content
placement using NTN. Specifically, we dynamically select content for placement
via NTN links based on popularity and suitability for delivery through NTN,
while considering the orbital motion of LEO satellites. Our comprehensive
system-level case studies, based on a practical LEO constellation, demonstrate
the significant improvement in placement speed compared to existing methods
that neglect network mobility. We further show that the advantages of NTN links
over standalone wireless TN solutions are more pronounced in the early stages
of content delivery and are amplified by higher content popularity correlation
across geographical regions.
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