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Exploiting localization systems for LoRaWAN transmission scheduling in industrial applications
University of Brescia, Italy.
Univeristy of Brescia, Italy.
University of Brescia, Italy.
University of Brescia, Italy.
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2019 (English)In: 2019 15th IEEE International Workshop on Factory Communication Systems (WFCS), IEEE, 2019, article id 8757999Conference paper, Published paper (Refereed)
Abstract [en]

The Internet of Things (IoT) paradigm contaminated industrial world, allowing for innovative services. The wireless communications seem to be particularly attracting, especially when complement indoor and outdoor Real Time Location Systems (RTLS) for geo-referencing smart objects (e.g. for asset tracking). In this paper, the LoRaWAN solution is considered for transmitting RTLS data. LoRaWAN is an example of Low Power Wide Area Network: it tradeoffs throughput with coverage and power consumption. However, performance can be greatly improved with limited changes to the standard specifications. In this work, a scheduling layer is suggested above the regular stack for allocating communication resources in a time slot channel hopping medium access strategy. The main innovation is the time synchronization, which is obtained opportunistically from the ranging devices belonging to the RTLSs. The experimental testbed, based on commercially available solutions, demonstrates the affordability and feasibility of the proposed approach. When low-cost GPS (outdoor) and UWB (indoor) ranging devices are considered, synchronization error of few microseconds can be easily obtained. The experimental results show the that time reference pulses disciplined by GPS have a maximum jitter of 180 ns and a standard deviation of 40 ns whereas, if time reference pulses disciplined by UWB are considered, the maximum jitter is 3.3 μs and the standard deviation is 0.7 μs.

Place, publisher, year, edition, pages
IEEE, 2019. article id 8757999
Keywords [en]
Localization, LoRaWAN, Synchronization, Industrial IoT
National Category
Computer Engineering Communication Systems
Identifiers
URN: urn:nbn:se:miun:diva-36735DOI: 10.1109/WFCS.2019.8757999Scopus ID: 2-s2.0-85070104144ISBN: 978-1-7281-1268-8 (electronic)OAI: oai:DiVA.org:miun-36735DiVA, id: diva2:1337533
Conference
15th IEEE International Workshop on Factory Communication Systems (WFCS'19), Sundsvall, Sweden, May 27-29, 2019.
Projects
TIMELINESS
Funder
Knowledge FoundationAvailable from: 2019-07-15 Created: 2019-07-15 Last updated: 2019-08-20Bibliographically approved

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Sisinni, EmilianoGidlund, Mikael

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CiteExportLink to record
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