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Caching Policies for Delay Minimization in Small Cell Networks with Joint Transmissions

Abstract : In 5G and beyond network architectures, operators and content providers base their content distribution strategies on Heterogeneous Networks, where macro and small(er) cells are combined to offer better Quality of Service (QoS) to wireless users. On top of such networks, edge caching and Coordinated Multi-Point (CoMP) transmissions are used to further improve performance. The problem of optimally utilizing the cache space in dense and heterogeneous cell networks has been extensively studied under the name of "FemtoCaching." However, related literature usually assumes relatively simple physical layer (PHY) setups and known or stationary content popularity. In this paper, we address these issues by proposing a class of fully distributed and dynamic caching algorithms that take advantage of CoMP capabilities towards minimizing PHY-aware metrics, such as end-to-end (E2E) delay. Our policies outperform existing dynamic solutions that are PHY-unaware, under both synthetic and real (non-stationary) request processes, and converge to efficient centralized solutions, in static setups.
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https://hal.archives-ouvertes.fr/hal-03051751
Contributor : Guilherme Iecker Ricardo Connect in order to contact the contributor
Submitted on : Thursday, December 10, 2020 - 12:04:06 PM
Last modification on : Friday, January 21, 2022 - 3:11:06 AM
Long-term archiving on: : Thursday, March 11, 2021 - 7:25:11 PM

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Guilherme Iecker Ricardo, Giovanni Neglia, Thrasyvoulos Spyropoulos. Caching Policies for Delay Minimization in Small Cell Networks with Joint Transmissions. ICC 2020 - IEEE International Conference on Communications (ICC), Jun 2020, Dublin, Ireland. pp.1-6, ⟨10.1109/ICC40277.2020.9149237⟩. ⟨hal-03051751⟩

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