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Over-the-Air Time Synchronization for URLLC: Requirements, Challenges and Possible Enablers
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology. (Communication Systems and Networks (CSN))ORCID iD: 0000-0003-3717-7793
University of Oulo and Ericsson Research, Finland.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology. (Communication Systems and Networks (CSN))ORCID iD: 0000-0003-0873-7827
Ericsson Research, Finland.
2018 (English)In: Proceedings of the International Symposium on Wireless Communication Systems, IEEE, 2018, article id 8491188Conference paper, Published paper (Refereed)
Abstract [en]

Ultra-reliable and low-latency communications (URLLC) is an emerging feature in 5G and beyond wireless systems, which is introduced to support stringent latency and reliability requirements of mission-critical industrial applications. In many potential applications, multiple sensors/actuators collaborate and require isochronous operation with strict and bounded jitter, e.g., 1┬Ás. To this end, network time synchronization becomes crucial for real-time and isochronous communication between a controller and the sensors/actuators. In this paper, we look at different applications in factory automation and smart grids to reveal the requirements of device-level time synchronization and the challenges in extending the high-granularity timing information to the devices. Also, we identify the potential over-the-air synchronization mechanisms in 5G radio interface, and discuss the needed enhancements to meet the jitter constraints of time-sensitive URLLC applications.

Place, publisher, year, edition, pages
IEEE, 2018. article id 8491188
Keywords [en]
URLLC, Synchronization, 5G, Industrial IoT
National Category
Communication Systems Telecommunications Computer Engineering
Identifiers
URN: urn:nbn:se:miun:diva-34525DOI: 10.1109/ISWCS.2018.8491188Scopus ID: 2-s2.0-85056726193ISBN: 978-1-5386-5005-9 (electronic)OAI: oai:DiVA.org:miun-34525DiVA, id: diva2:1251336
Conference
15th International Symposium on Wireless Communication Systems, ISWCS 2018; Lisbon; Portugal; 28 August 2018 through 31 August 2018
Projects
TIMELINESS
Funder
Knowledge FoundationAvailable from: 2018-09-27 Created: 2018-09-27 Last updated: 2018-12-10Bibliographically approved

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Mahmood, AamirGidlund, Mikael

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CiteExportLink to record
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