Information freshness is crucial in a wide range of wireless applications where a destination needs the most recent measurements of a remotely observed random process. In this paper, we study the information freshness of a single-server multi-source M/M/1 queueing model under a first-come first-served (FCFS) serving policy. The information freshness of the status updates of each source is evaluated by the average age of information (AoI). We derive an exact expression for the average AoI for the multi-source M/M/1 queueing model. Simulation results are provided to validate the derived exact expression for the average AoI.
Moltafet Mohammad, Leinonen Markus, Codreanu Marian
A4 Article in conference proceedings
Place of publication:
2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications
8 October 2020
M. Moltafet, M. Leinonen and M. Codreanu, “An Exact Expression for the Average AoI in a Multi-Source M/M/1 Queueing Model,” 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, London, United Kingdom, 2020, pp. 1-6, doi: 10.1109/PIMRC48278.2020.9217386
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