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Time Synchronization in 5G Wireless Edge: Requirements and Solutions for Critical-MTC
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.ORCID iD: 0000-0003-3717-7793
Ericsson Research, Jorvas, Finland.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.ORCID iD: 0000-0003-0873-7827
Ericsson Research, Jorvas, Finland.
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2019 (English)In: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 57, no 12, p. 45-51Article in journal (Refereed) Published
Abstract [en]

The wireless edge is about distributing intelligence to wireless devices wherein the distribution of accurate time reference is essential for time-critical machine-type communication (cMTC). In 5G-based cMTC, enabling time synchronization in the wireless edge means moving beyond the current synchronization needs and solutions in 5G radio access. In this article, we analyze the device-level synchronization needs of potential cMTC applications: industrial automation, power distribution, vehicular communication, and live audio/video production. We present an overthe- air synchronization scheme comprising 5G air interface parameters and discuss their associated timing errors. We evaluate the estimation error in device-to-base-station propagation delay from timing advance under random errors and show how to reduce the estimation error. In the end, we identify the random errors specific to dense multipath fading environments and discuss countermeasures.

Place, publisher, year, edition, pages
2019. Vol. 57, no 12, p. 45-51
Keywords [en]
5G New Radio, cMTC, Industry 4.0, time synchronization, timing advance, TSN.
National Category
Telecommunications Communication Systems
Identifiers
URN: urn:nbn:se:miun:diva-37971DOI: 10.1109/MCOM.001.1900379ISI: 000502777900009Scopus ID: 2-s2.0-85076687454OAI: oai:DiVA.org:miun-37971DiVA, id: diva2:1377479
Funder
Knowledge FoundationAvailable from: 2019-12-11 Created: 2019-12-11 Last updated: 2020-01-16Bibliographically approved

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