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.
Moltafet Mohammad, Leinonen Markus, Codreanu Marian
B3 Article in conference proceedings
Place of publication:
2020 IEEE INFOCOM Conference on Computer Communications Workshops, INFOCOM WKSHPS 2020
10 August 2020
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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