Energy-efficient multi-tier caching and node association in heterogeneous fog networks
Energy-efficient multi-tier caching and node association in heterogeneous fog networks
Caching popular contents at heterogeneous devices, e.g., fog nodes (FNs) or fog access points (FAPs), constitutes a promising technique of reducing both the traffic and the energy consumption of the backhaul links. In this paper, we propose an energy-efficient caching and node association algorithm for cache-aided fog networks. First, we solve the problem of energy-efficient content caching and delivery in the FNs/FAPs. In both caching scenarios, we investigate the relationship between the caching probability of the file and the energy-efficient content delivery by formulating the associated energy efficiency (EE) optimization problem. Then, we derive a joint modulation mode allocation strategy and caching policy for each content caching node and conceive a joint node association and caching algorithm. Finally, we quantify both the overall EE and throughput for demonstrating that the proposed caching and transmission strategy achieves significant performance improvements.
Wang, Kunlun
1ca5fe18-ef5b-4f3f-91f3-b26e871498ff
Li, Jun
173328aa-1759-4a78-9514-319c5a6ff4b0
Yang, Yang
4f250291-4405-49b3-a662-eb9810e00415
Chen, Wen
739112b6-9b2f-4deb-92f3-7c8af78f129e
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
15 February 2021
Wang, Kunlun
1ca5fe18-ef5b-4f3f-91f3-b26e871498ff
Li, Jun
173328aa-1759-4a78-9514-319c5a6ff4b0
Yang, Yang
4f250291-4405-49b3-a662-eb9810e00415
Chen, Wen
739112b6-9b2f-4deb-92f3-7c8af78f129e
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Wang, Kunlun, Li, Jun, Yang, Yang, Chen, Wen and Hanzo, Lajos
(2021)
Energy-efficient multi-tier caching and node association in heterogeneous fog networks.
In 2020 IEEE 92nd Vehicular Technology Conference, VTC 2020-Fall - Proceedings.
vol. 2020-November,
IEEE..
(doi:10.1109/VTC2020-Fall49728.2020.9348651).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Caching popular contents at heterogeneous devices, e.g., fog nodes (FNs) or fog access points (FAPs), constitutes a promising technique of reducing both the traffic and the energy consumption of the backhaul links. In this paper, we propose an energy-efficient caching and node association algorithm for cache-aided fog networks. First, we solve the problem of energy-efficient content caching and delivery in the FNs/FAPs. In both caching scenarios, we investigate the relationship between the caching probability of the file and the energy-efficient content delivery by formulating the associated energy efficiency (EE) optimization problem. Then, we derive a joint modulation mode allocation strategy and caching policy for each content caching node and conceive a joint node association and caching algorithm. Finally, we quantify both the overall EE and throughput for demonstrating that the proposed caching and transmission strategy achieves significant performance improvements.
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e-pub ahead of print date: 16 December 2020
Published date: 15 February 2021
Additional Information:
Funding Information:
Acknowledgements We thank the “National Center for Scientific and Technical Research” in Rabat (Morocco) for their support by the Excellence Scholarship.
Publisher Copyright:
© 2020 IEEE.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Venue - Dates:
92nd IEEE Vehicular Technology Conference, VTC 2020-Fall, , Virtual, Victoria, Canada, 2020-11-18
Identifiers
Local EPrints ID: 474726
URI: http://eprints.soton.ac.uk/id/eprint/474726
ISSN: 1550-2252
PURE UUID: 7efb1467-7fcc-42fb-8181-cff3e21da00a
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Date deposited: 02 Mar 2023 17:34
Last modified: 18 Mar 2024 02:36
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Contributors
Author:
Kunlun Wang
Author:
Jun Li
Author:
Yang Yang
Author:
Wen Chen
Author:
Lajos Hanzo
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