Gu, Shushi, Yu, Zichao, Zhang, Qingyu, and Huang, Tao (2023) Energy-Aware Coded Transmission Strategy for Hierarchical Cooperative Caching Networks. IEEE Wireless Communications Letters, 12 (1). pp. 178-182.

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Abstract

With the rapid development of millions more edge base stations (EBSs) and billions of user devices in the future networks, the desire for low-energy system design and transmission strategy will be even more compelling. In this letter, we investigate the energy consumption issue of hierarchical cooperative caching networks (HCCNs) in which both EBSs and users are capable of storing content data in their local caches. A three-stage coded transmission strategy in HCCNs is proposed, and the closed expression of energy consumption of each stage is derived. In addition, we formulate a total energy consumption minimization problem with the constraint of EBSs’ cache sizes and provide an algorithm to obtain the optimal cache placement matrix. We demonstrate by numerical results that our optimized three-stage coded transmission strategy can achieve lower energy consumption than various multicast transmission strategies under the different users' cache sizes.

Item ID:	76765
Item Type:	Article (Research - C1)
ISSN:	2162-2345
Keywords:	hierarchical cooperative caching networks, coded transmission, cache placement optimization, energy consumption
Copyright Information:	© 2022 IEEE.
Date Deposited:	15 Nov 2022 22:52
FoR Codes:	40 ENGINEERING > 4006 Communications engineering > 400602 Data communications @ 40% 40 ENGINEERING > 4006 Communications engineering > 400604 Network engineering @ 40% 46 INFORMATION AND COMPUTING SCIENCES > 4605 Data management and data science > 460503 Data models, storage and indexing @ 20%
SEO Codes:	17 ENERGY > 1701 Energy efficiency > 170102 Industrial energy efficiency @ 20% 22 INFORMATION AND COMMUNICATION SERVICES > 2201 Communication technologies, systems and services > 220105 Network systems and services @ 50% 22 INFORMATION AND COMMUNICATION SERVICES > 2201 Communication technologies, systems and services > 220107 Wireless technologies, networks and services @ 30%
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