Next Article in Journal
Integrated Diagnostic Framework for Process and Sensor Faults in Chemical Industry
Previous Article in Journal
The Impact of Environment on Gait Assessment: Considerations from Real-World Gait Analysis in Dementia Subtypes
Previous Article in Special Issue
How Can Wake-up Radio Reduce LoRa Downlink Latency for Energy Harvesting Sensor Nodes?
Article

Dense Deployment of LoRa Networks: Expectations and Limits of Channel Activity Detection and Capture Effect for Radio Channel Access

LIUPPA Laboratory, University of Pau, 64000 Pau, France
*
Author to whom correspondence should be addressed.
Academic Editor: Francisco Falcone
Sensors 2021, 21(3), 825; https://doi.org/10.3390/s21030825
Received: 13 December 2020 / Revised: 21 January 2021 / Accepted: 22 January 2021 / Published: 26 January 2021
(This article belongs to the Special Issue Massive and Reliable Sensor Communications with LPWANs Technologies)
With worldwide deployment of LoRa/LoRaWAN LPWAN networks in a large variety of applications, it is crucial to improve the robustness of LoRa channel access which is largely ALOHA-like to support environments with higher node density. This article presents extensive experiments on LoRa Channel Activity Detection and Capture Effect property in order to better understand how a competition-based channel access mechanisms can be optimized for LoRa LPWAN radio technology. In the light of these experimentation results, the contribution continues by identifying design guidelines for a channel access mechanism in LoRa and by proposing a channel access method with a lightweight collision avoidance mechanism that can operate without a reliable Clear Channel Assessment procedure. The proposed channel access mechanism has been implemented and preliminary tests show promising capabilities in increasing the Packet Delivery Rate in dense configurations. View Full-Text
Keywords: LPWAN; LoRa; scalability; performance; channel access; carrier sense; channel activity detection; capture effect LPWAN; LoRa; scalability; performance; channel access; carrier sense; channel activity detection; capture effect
Show Figures

Figure 1

MDPI and ACS Style

Pham, C.; Ehsan, M. Dense Deployment of LoRa Networks: Expectations and Limits of Channel Activity Detection and Capture Effect for Radio Channel Access. Sensors 2021, 21, 825. https://doi.org/10.3390/s21030825

AMA Style

Pham C, Ehsan M. Dense Deployment of LoRa Networks: Expectations and Limits of Channel Activity Detection and Capture Effect for Radio Channel Access. Sensors. 2021; 21(3):825. https://doi.org/10.3390/s21030825

Chicago/Turabian Style

Pham, Congduc, and Muhammad Ehsan. 2021. "Dense Deployment of LoRa Networks: Expectations and Limits of Channel Activity Detection and Capture Effect for Radio Channel Access" Sensors 21, no. 3: 825. https://doi.org/10.3390/s21030825

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop