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Peak Age of Information under Tandem of Queues

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arxiv 2405.02705 v1 pith:JP53TL6Q submitted 2024-05-04 cs.IT math.IT

classification cs.ITmath.IT
keywords informationframeworkmeanpeakpreemptiveprocessqueuesservers
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

This paper considers a communication system where a source sends time-sensitive information to its destination via queues in tandem. We assume that the arrival process as well as the service process (of each server) are memoryless, and each of the servers has no buffer. For this setup, we develop a recursive framework to characterize the mean peak age of information (PAoI) under preemptive and non-preemptive policies with $N$ servers having different service rates. For the preemptive case, the proposed framework also allows to obtain mean age of information (AoI).

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