Graduate School and Research Center in Digital Sciences

Caching policies for delay minimization in small cell networks with joint transmissions

Ricardo, Guilherme; Neglia, Giovanni; Spyropoulos, Thrasyvoulos

ICC 2020, IEEE International Conference on Communications, 7-11 June 2020, Dublin, Ireland

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.

Document Bibtex

Title:Caching policies for delay minimization in small cell networks with joint transmissions
Keywords:Edge caching, joint transmission, CoMP, heterogeneous cellular networks, distributed algorithms
Type:Conference
Language:English
City:Dublin
Country:IRELAND
Date:
Department:Communication systems
Eurecom ref:6217
Bibtex: @inproceedings{EURECOM+6217, year = {2020}, title = {{C}aching policies for delay minimization in small cell networks with joint transmissions}, author = {{R}icardo, {G}uilherme and {N}eglia, {G}iovanni and {S}pyropoulos, {T}hrasyvoulos}, booktitle = {{ICC} 2020, {IEEE} {I}nternational {C}onference on {C}ommunications, 7-11 {J}une 2020, {D}ublin, {I}reland}, address = {{D}ublin, {IRELAND}}, month = {06}, url = {http://www.eurecom.fr/publication/6217} }
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