{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,10,6]],"date-time":"2024-10-06T01:12:50Z","timestamp":1728177170633},"reference-count":20,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2022,5,2]],"date-time":"2022-05-02T00:00:00Z","timestamp":1651449600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"By enabling name-based routing and ubiquitous in-network caching, Named Data Networking (NDN) is a promising network architecture for sixth generation (6G) edge network infrastructures. However, the performance of content retrieval largely depends on the selected caching strategy, which is implemented in a distributed fashion by each NDN node. Previous research showed the effectiveness of caching decisions based on content popularity and network topology information. This paper presents a new distributed caching strategy for NDN edge networks based on a metric called popularity-aware closeness (PaC), which measures the proximity of the potential cacher to the majority of requesters of a certain content. After identifying the most popular contents, the strategy caches them in the available edge nodes that guarantee the higher PaC. Achieved simulation results show that the proposed strategy outperforms other benchmark schemes, in terms of reduced content retrieval delay and exchanged data traffic.<\/jats:p>","DOI":"10.3390\/s22093460","type":"journal-article","created":{"date-parts":[[2022,5,3]],"date-time":"2022-05-03T12:26:35Z","timestamp":1651580795000},"page":"3460","source":"Crossref","is-referenced-by-count":10,"title":["Popularity-Aware Closeness Based Caching in NDN Edge Networks"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"http:\/\/orcid.org\/0000-0003-2370-5145","authenticated-orcid":false,"given":"Marica","family":"Amadeo","sequence":"first","affiliation":[{"name":"DIIES Department, University Mediterranea of Reggio Calabria, 89100 Reggio Calabria, Italy"},{"name":"National Inter-University Consortium for Telecommunications (CNIT), 43124 Parma, Italy"}]},{"ORCID":"http:\/\/orcid.org\/0000-0003-3281-6680","authenticated-orcid":false,"given":"Claudia","family":"Campolo","sequence":"additional","affiliation":[{"name":"DIIES Department, University Mediterranea of Reggio Calabria, 89100 Reggio Calabria, Italy"},{"name":"National Inter-University Consortium for Telecommunications (CNIT), 43124 Parma, Italy"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-2664-2322","authenticated-orcid":false,"given":"Giuseppe","family":"Ruggeri","sequence":"additional","affiliation":[{"name":"DIIES Department, University Mediterranea of Reggio Calabria, 89100 Reggio Calabria, Italy"},{"name":"National Inter-University Consortium for Telecommunications (CNIT), 43124 Parma, Italy"}]},{"ORCID":"http:\/\/orcid.org\/0000-0003-2731-300X","authenticated-orcid":false,"given":"Antonella","family":"Molinaro","sequence":"additional","affiliation":[{"name":"DIIES Department, University Mediterranea of Reggio Calabria, 89100 Reggio Calabria, Italy"},{"name":"National Inter-University Consortium for Telecommunications (CNIT), 43124 Parma, Italy"},{"name":"Laboratoire des Signaux et Syst\u00e9mes (L2S), CentraleSup\u00e9lec, Universit\u00e9 Paris-Saclay, 91190 Gif-sur-Yvette, France"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1145\/2656877.2656887","article-title":"Named data networking","volume":"44","author":"Zhang","year":"2014","journal-title":"ACM SIGCOMM Comput. 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