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Age of Information-Aware Scheduling for Timely and Scalable Internet of Things Applications
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems.
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems.
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems.
2019 (English)In: IEEE Conference On Computer Communications (IEEE INFOCOM 2019), 2019, p. 2476-2484Conference paper, Published paper (Refereed)
Abstract [en]

We consider large scale Internet of Things applications requesting data from physical devices. We study the problem of timely dissemination of sensor data towards applications with freshness requirements by means of a cache. We aim to minimize direct access to the possibly battery powered physical devices, yet improving Age of Information as a data freshness metric. We propose an Age of Information-aware scheduling policy for the physical device to push sensor updates to the caches located in cloud data centers. Such policy groups application requests based on freshness thresholds, thereby reduces the number of requests and threshold misses, and accounts for delay variation. The policy is incrementally introduced as we study its behavior over ideal and more realistic communication links with delay variation. We numerically evaluate the proposed policy against a simple yet widely used periodic schedule. We show that our informed schedule outperforms the periodic schedule even under high delay variations.

Place, publisher, year, edition, pages
2019. p. 2476-2484
Series
IEEE INFOCOM, ISSN 0743-166X
National Category
Communication Systems Computer Sciences
Identifiers
URN: urn:nbn:se:uu:diva-393764ISI: 000480426400276ISBN: 978-1-7281-0515-4 (electronic)OAI: oai:DiVA.org:uu-393764DiVA, id: diva2:1355154
Conference
IEEE Conference on Computer Communications (IEEE INFOCOM), APR 29-MAY 02, 2019, Paris, FRANCE
Funder
Swedish Foundation for Strategic Research , GMT14-0032Available from: 2019-09-27 Created: 2019-09-27 Last updated: 2019-09-27Bibliographically approved

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Corneo, LorenzoRohner, ChristianGunningberg, Per

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