University of Oulu

K. Mikhaylov, "On the Uplink Traffic Distribution in Time for Duty-cycle Constrained LoRaWAN Networks," 2021 13th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), 2021, pp. 16-21, doi: 10.1109/ICUMT54235.2021.9631708

On the uplink traffic distribution in time for duty-cycle constrained LoRaWAN networks

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Author: Mikhaylov, Konstantin1
Organizations: 1Centre for Wireless Communications, University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2022-01-11


In the recent years, the LoRaWAN Low Power Wide Area Network (LPWAN) technology became a critical connectivity enabler for many Internet of Things (IoT) grade monitoring applications and has attracted substantial attention from Academy, Industry, and businesses. One of the most widespread assumption relative to the LoRaWAN and the basis for many studies has been the uniformity of distribution in time of uplink packet transmissions by the different machine devices composing the network. However, recent experimental studies revealed that this implication does not always hold in real-life networks composed of multiple devices, which operate under duty-cycle restrictions. This study dives deeper to identify the reason underlying this effect, which can potentially create negative consequences for the performance of the whole network. Specifically, the paper starts by detailing the key aspects of LoRaWAN procedures and mechanisms and hypothesize that non-uniform distribution of UL transmissions may be caused by a cumulative effect of (i) over-the-air activation (OTAA) procedure, (ii) duty-cycle restrictions and their implementation, and (iii) periodic UL traffic. This hypothesis is validated and confirmed through simulations using the specially-developed model, which captures the details of OTAA and subsequent data transmissions in LoRaWAN. After demonstrating this effect and validity of our hypothesis, several approaches, which can enable to mitigate it, are identified and pinpointed.

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Series: International Conference on Ultra Modern Telecommunications and Workshops
ISSN: 2157-0221
ISSN-E: 2157-023X
ISSN-L: 2157-0221
ISBN: 978-1-6654-0219-4
ISBN Print: 978-1-6654-0220-0
Pages: 16 - 21
DOI: 10.1109/ICUMT54235.2021.9631708
Host publication: 13th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT), 25-27 Oct. 2021, Brno, Czech Republic
Conference: International Congress on Ultra Modern Telecommunications and Control Systems and Workshops
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research has been financially supported by the Academy of Finland 6Genesis Flagship (decision 318927) and MRAT-SafeDrone (decision 341111) project.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
341111 (Academy of Finland Funding decision)
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