On-Board Content Caching With Dynamic Cache Reconfiguration in Multi-Layer Satellite Edge Networks
Satellite Edge Computing (SEC) integrated with multi-layer networks is a promising solution for on-board content caching to meet the stringent content delivery requirements in the future network. However, designing an efficient on-board content caching strategy is challenging in satellite edge netwo...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Open Journal of the Communications Society |
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| Online Access: | https://ieeexplore.ieee.org/document/11063433/ |
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| author | Haftay Gebreslasie Abreha Ilora Maity Houcine Chougrani Christos Politis Symeon Chatzinotas |
| author_facet | Haftay Gebreslasie Abreha Ilora Maity Houcine Chougrani Christos Politis Symeon Chatzinotas |
| author_sort | Haftay Gebreslasie Abreha |
| collection | DOAJ |
| description | Satellite Edge Computing (SEC) integrated with multi-layer networks is a promising solution for on-board content caching to meet the stringent content delivery requirements in the future network. However, designing an efficient on-board content caching strategy is challenging in satellite edge networks because of limited on-board resources, dynamic topology, and fluctuating traffic demand. Frequent cache updates are required to adapt to these dynamic conditions, but incur cache reconfiguration overhead, which can overload feeder links and increase cache update delays. To address these challenges, in this paper, we propose an on-board dynamic cache reconfiguration strategy that maximizes the cache hit rate while minimizing reconfiguration overhead. We design a proximity-based content popularity model and an Age of Information (AoI)-aware caching strategy to optimize on-board satellite resources, enhancing the cache hit rate and ensuring content freshness. We employ a greedy algorithm for an initial and fast solution for caching contents and enhance it with a Genetic Algorithm (GA)-based approach. Simulations with realistic datasets demonstrate that the proposed solution outperforms the Cooperative Content Caching (CCC) benchmark by 11.63% and 9.25% in terms of cache hit rate and feeder link load, respectively. |
| format | Article |
| id | doaj-art-67d3abe0e2a64cb0b8b9b590356891e5 |
| institution | DOAJ |
| issn | 2644-125X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Communications Society |
| spelling | doaj-art-67d3abe0e2a64cb0b8b9b590356891e52025-08-20T03:13:27ZengIEEEIEEE Open Journal of the Communications Society2644-125X2025-01-0165727574510.1109/OJCOMS.2025.358545111063433On-Board Content Caching With Dynamic Cache Reconfiguration in Multi-Layer Satellite Edge NetworksHaftay Gebreslasie Abreha0https://orcid.org/0009-0000-2172-2326Ilora Maity1https://orcid.org/0000-0002-8042-4123Houcine Chougrani2Christos Politis3Symeon Chatzinotas4https://orcid.org/0000-0001-5122-0001Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg City, LuxembourgInterdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg City, LuxembourgInterdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg City, LuxembourgSES TechCom S.A., Betzdorf, LuxemburgInterdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg City, LuxembourgSatellite Edge Computing (SEC) integrated with multi-layer networks is a promising solution for on-board content caching to meet the stringent content delivery requirements in the future network. However, designing an efficient on-board content caching strategy is challenging in satellite edge networks because of limited on-board resources, dynamic topology, and fluctuating traffic demand. Frequent cache updates are required to adapt to these dynamic conditions, but incur cache reconfiguration overhead, which can overload feeder links and increase cache update delays. To address these challenges, in this paper, we propose an on-board dynamic cache reconfiguration strategy that maximizes the cache hit rate while minimizing reconfiguration overhead. We design a proximity-based content popularity model and an Age of Information (AoI)-aware caching strategy to optimize on-board satellite resources, enhancing the cache hit rate and ensuring content freshness. We employ a greedy algorithm for an initial and fast solution for caching contents and enhance it with a Genetic Algorithm (GA)-based approach. Simulations with realistic datasets demonstrate that the proposed solution outperforms the Cooperative Content Caching (CCC) benchmark by 11.63% and 9.25% in terms of cache hit rate and feeder link load, respectively.https://ieeexplore.ieee.org/document/11063433/Multi-layer satellite networkssatellite edge computing (SEC)on-board content cachingcache reconfigurationcontent freshnessage of information (AoI) |
| spellingShingle | Haftay Gebreslasie Abreha Ilora Maity Houcine Chougrani Christos Politis Symeon Chatzinotas On-Board Content Caching With Dynamic Cache Reconfiguration in Multi-Layer Satellite Edge Networks IEEE Open Journal of the Communications Society Multi-layer satellite networks satellite edge computing (SEC) on-board content caching cache reconfiguration content freshness age of information (AoI) |
| title | On-Board Content Caching With Dynamic Cache Reconfiguration in Multi-Layer Satellite Edge Networks |
| title_full | On-Board Content Caching With Dynamic Cache Reconfiguration in Multi-Layer Satellite Edge Networks |
| title_fullStr | On-Board Content Caching With Dynamic Cache Reconfiguration in Multi-Layer Satellite Edge Networks |
| title_full_unstemmed | On-Board Content Caching With Dynamic Cache Reconfiguration in Multi-Layer Satellite Edge Networks |
| title_short | On-Board Content Caching With Dynamic Cache Reconfiguration in Multi-Layer Satellite Edge Networks |
| title_sort | on board content caching with dynamic cache reconfiguration in multi layer satellite edge networks |
| topic | Multi-layer satellite networks satellite edge computing (SEC) on-board content caching cache reconfiguration content freshness age of information (AoI) |
| url | https://ieeexplore.ieee.org/document/11063433/ |
| work_keys_str_mv | AT haftaygebreslasieabreha onboardcontentcachingwithdynamiccachereconfigurationinmultilayersatelliteedgenetworks AT iloramaity onboardcontentcachingwithdynamiccachereconfigurationinmultilayersatelliteedgenetworks AT houcinechougrani onboardcontentcachingwithdynamiccachereconfigurationinmultilayersatelliteedgenetworks AT christospolitis onboardcontentcachingwithdynamiccachereconfigurationinmultilayersatelliteedgenetworks AT symeonchatzinotas onboardcontentcachingwithdynamiccachereconfigurationinmultilayersatelliteedgenetworks |