Average age of information in a multi-source M/M/1 queueing model with LCFS prioritized packet management
Moltafet, Mohammad; Leinonen, Markus; Codreanu, Marian (2020-08-10)
M. Moltafet, M. Leinonen and M. Codreanu, "Average Age of Information in a Multi-Source M/M/1 Queueing Model with LCFS Prioritized Packet Management," IEEE INFOCOM 2020 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), Toronto, ON, Canada, 2020, pp. 303-308, doi: 10.1109/INFOCOMWKSHPS50562.2020.9162681
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https://urn.fi/URN:NBN:fi-fe2020111790895
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Abstract
In this paper, we consider an M/M/1 status update system consisting of two independent sources, one server, and one sink. We consider the following last-come first-served (LCFS) prioritized packet management policy. When the system is empty, any arriving packet immediately enters the server; when the server is busy, a packet of a source waiting in the queue is replaced if a new packet of the same source arrives and the fresh packet goes at the head of the queue. We derive the average age of information (AoI) of the considered M/M/1 queueing model by using the stochastic hybrid systems (SHS) technique. Numerical results illustrate the effectiveness of the proposed packet management policy compared to several baseline policies.
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