Latency Limits for Content Delivery in a Fog-RAN with D2D Communication

Autor:	Osvaldo Simeone, Roy Karasik, Shlomo Shamai Shitz
Jazyk:	angličtina
Předmět:	Access network Computer science business.industry Ran 0202 electrical engineering electronic engineering information engineering 020206 networking & telecommunications Content delivery 02 engineering and technology Latency (engineering) business Computer network
Zdroj:	2019 IEEE International Symposium on Information Theory (ISIT) ISIT
DOI:	10.1109/isit.2019.8849844
Popis:	A Fog-Radio Access Network (F-RAN) with arbitrary number of edge nodes and users is studied in which the users are able to cooperate by communicating over out-of-band broadcast Device-to-Device (D2D) links. Placement and delivery strategies are proposed with the aim of minimizing the Normalized Delivery Time (NDT) — a metric that captures the high signal-to-noise ratio worst-case latency for delivering any subset of requested contents to the users. The proposed strategies, based on compress-and-forward, are shown to be optimal to within a constant multiplicative factor of two for all values of the problem parameters. The analysis provides insights on the role of D2D cooperation in improving the delivery latency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e524409eea86e349eecd9abdf16cf352 Zobrazit plný text záznamu