LEO satellite, task offloading, optimization, SCA, multi-time slot
Résumé :
[en] The next-generation regenerative payload-enabled low Earth orbit (LEO) satellites enable task offloading and delivering services to energy and computation-constrained devices in remote terrains. Recent studies on satellite-aided edge computing often focus on binary offloading scenarios, neglecting crucial system parameters such as service period, task deadline, and output size. To address these limitations, we propose a hierarchical computation framework for remote Earth observation related services such as disaster prediction, 2D/3D scene observation, route finding, and rescue operations based on satellite images/videos. The proposed framework supports parallel and partial task offloading strategies, optimizing the communication and computation resources across the serving LEO satellite, adjacent LEO satellites, and cloud-aided gateway. Our objective is to minimize the worst-case task completion time, ensuring near real-time delivery of requested tasks. The formulated multi-time slot joint optimization problem is tackled via the proposed iterative algorithm based on successive convex approximation, demonstrating superior performance compared to baseline solutions.
Disciplines :
Ingénierie électrique & électronique
Auteur, co-auteur :
BHANDARI, Sovit ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
VU, Thang Xuan ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Co-auteurs externes :
no
Langue du document :
Anglais
Titre :
LEO Satellite-assisted Task Offloading for a Near Real-time Earth Observation Service
Date de publication/diffusion :
08 décembre 2024
Nom de la manifestation :
2024 IEEE GLOBECOM Symposium
Organisateur de la manifestation :
IEEE GLOBECOM
Lieu de la manifestation :
Cape Town, Afrique du Sud
Date de la manifestation :
08-12-2024 to 12-12-2024
Titre de l'ouvrage principal :
LEO Satellite-assisted Task Offloading for a Near Real-time Earth Observation Service
Maison d'édition :
IEEE, Etats-Unis
Peer reviewed :
Peer reviewed
Projet FnR :
FNR14016225 - Integrated Satellite-terrestrial Systems For Ubiquitous Beyond 5g Communications, 2020 (01/10/2020-30/09/2026) - Symeon Chatzinotas
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