Query-Age-Optimal Scheduling under Sampling and Transmission Constraints

This letter provides query-age-optimal joint sampling and transmission scheduling policies for a heterogeneous status update system, consisting of a stochastic arrival and a generate-at-will source, with an unreliable channel. Our main goal is to minimize the average query age of information (QAoI)...

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Bibliographic Details
Main Authors Zakeri, Abolfazl, Moltafet, Mohammad, Leinonen, Markus, Codreanu, Marian
Format Journal Article
LanguageEnglish
Published 23.09.2022
Online AccessGet full text
DOI10.48550/arxiv.2209.11689

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Summary:This letter provides query-age-optimal joint sampling and transmission scheduling policies for a heterogeneous status update system, consisting of a stochastic arrival and a generate-at-will source, with an unreliable channel. Our main goal is to minimize the average query age of information (QAoI) subject to average sampling, average transmission, and per-slot transmission constraints. To this end, an optimization problem is formulated and solved by casting it into a linear program. We also provide a low-complexity near-optimal policy using the notion of weakly-coupled constrained Markov decision processes. The numerical results show up to 32% performance improvement by the proposed policies compared with a benchmark policy.
DOI:10.48550/arxiv.2209.11689