Timely Updates By Multiple Sources: The M/M/1 Queue Revisited

02/07/2020

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by   Sanjit K. Kaul, et al.

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Multiple sources submit updates to a monitor through an M/M/1 queue. A stochastic hybrid system (SHS) approach is used to derive the average age of information (AoI) for an individual source as a function of the offered load of that source and the competing update traffic offered by other sources. This work corrects an error in a prior analysis. By numerical evaluation, this error is observed to be small and qualitatively insignificant.