Open AccessFreshness ratio of information: a new metric for age of information
Author(s) -
Lee Y.
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.2020
Subject(s) - metric (unit) , fraction (chemistry) , computer science , mathematics , performance metric , statistics , engineering , operations management , chemistry , organic chemistry , economics , management
The age of information is the time elapsed since the generation of the last successfully received update message. In this Letter, the authors propose a new metric, freshness ratio of information (FRoI), defined as the fraction of time the age does not exceed a predefined freshness threshold. In addition, they analyse the FRoI for two different system models.