Autonomous collision-free scheduling for LoRa-based industrial Internet of Things

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Date
2019-06
Authors
Zorbas, Dimitrios
O'Flynn, Brendan
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Institute of Electrical and Electronics Engineers (IEEE)
Published Version
10.1109/WoWMoM.2019.8792975
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Abstract
LoRa-based transmissions suffer from extensive collisions even for low node numbers due to unregulated access to the medium. In order to tackle this problem, we propose a collision-free time-slotted scheduling approach where each node autonomously decides when to transmit a packet based on its unique identifier which is converted to a slot number using a modulo operation. We report through simulations and real experiments that this approach can provide very high reliability when the nodes are synchronized. Moreover, it does not require any additional communication overhead apart from a broadcast packet emitted by the gateway. Our comparison with the native LoRa, as well as to a slotted-LoRa version, shows significant performance gains in terms of packet delivery ratio, especially in the case of low node populations.
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Keywords
Internet of Things , Mobile radio , Synchronisation , Telecommunication scheduling , Wide area networks , Slotted-LoRa version , Packet delivery ratio , Autonomous collision-free scheduling , LoRa-based transmissions , Slot number , Modulo operation , Broadcast packet , Collision-free time-slotted scheduling , LoRa-based industrial Internet of Things , Communication overhead , Logic gates , Job shop scheduling , Bandwidth , Optimal scheduling , Synchronization , Schedules
Citation
Zorbas, D. and O'Flynn, B. (2019) 'Autonomous Collision-Free Scheduling for LoRa-Based Industrial Internet of Things'. 2019 IEEE 20th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM), Washington, DC, USA, 10-12 June 2019, 1-5. doi: 10.1109/WoWMoM.2019.8792975
Link to publisher’s version
https://ieeexplore.ieee.org/document/8792975
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https://hdl.handle.net/10468/8575
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Tyndall National Institute - Conference Items
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