@article{MC4A7E6CA,
title = "QoS-aware Routing Algorithm in Satellite and Ground Integrated Networks",
journal = "The Journal of Korean Institute of Communications and Information Sciences",
year = "2025",
issn = "1226-4717",
doi = "10.7840/kics.2025.50.5.781",
author = "Sanghoon Lee, Hongrok Choi, Dongkyun Ryoo, Haeun Kim, Junhyeong Kim, Jinho Park, Hyun Park, Kihun Kim, Sungjoon Ahn, Sangheon Pack",
keywords = "LEO Satellite, Multi-hop Network, Routing, QoS, Utility",
abstract = "Terrestrial networks face challenges in ensuring Quality of Service (QoS) due to limited coverage, especially in dead zones or long-distance communications. To address this, satellite-terrestrial integrated networks using Low Earth Orbit (LEO) satellites have gained attention. However, existing studies mainly consider transmission delay, neglecting the impact of long propagation distances, which hinders optimal routing. This paper proposes a utility-based QoS routing algorithm with a weighted Expected Propagation and Transmission Time (wEPTT) metric that accounts for both transmission and propagation delays. Experimental results show that wEPTT achieves lower latency and higher throughput than a conventional metric."
}