We consider a status update system consisting of two independent sources, one server, and one sink. The packets of different sources are generated according to the Poisson process and the packets are served according to an exponentially distributed service time. We consider the following 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. 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 are provided to show the effectiveness of the proposed policy.
Moltafet Mohammad, Leinonen Markus, Codreanu Marian
A4 Article in conference proceedings
Place of publication:
2020 IEEE International Symposium on Information Theory, ISIT 2020
24 August 2020
M. Moltafet, M. Leinonen and M. Codreanu, “Average Age of Information for a Multi-Source M/M/1 Queueing Model With Packet Management,” 2020 IEEE International Symposium on Information Theory (ISIT), Los Angeles, CA, USA, 2020, pp. 1765-1769, doi: 10.1109/ISIT44484.2020.9174099
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