Evaluation of LoRaWAN Class B efficiency for downlink traffic

The LoRaWAN technology is today the object of great interest in the Internet of Things context. It defines a simple network architecture offering a wide-area wireless coverage for low rate IoT applications with low power consumption for devices. The LoRaWan class A is designed for sensor networks wi...

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Bibliographic Details
Main Authors: Elbsir, Houssem Eddin, Kassab, Mohammed, Bhiri, Sami, Bedoui, Mohamed Hedi
Format: Conference Proceeding
Language:English
Subjects:
Delays
Downlink
internet of things
Logic gates
LoRaWAN
LoRaWan Class B
Synchronization
Uplink
Wireless communication
Wireless sensor networks
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Summary:The LoRaWAN technology is today the object of great interest in the Internet of Things context. It defines a simple network architecture offering a wide-area wireless coverage for low rate IoT applications with low power consumption for devices. The LoRaWan class A is designed for sensor networks with a focus on the uplink. LoRaWan defines an optional MAC operation, Class B, that provides the network server with the opportunities to initiate a downlink, which can be a real solution for actuators focus network. Today, Performances of Class B are not quantified and compared to default LoRaWAN class. In this paper, we propose an evaluation of Class B performance. We offer a set of realistic evaluation scenarios based on an NS-3 simulation module that we have developed for this purpose. Results show that Class B reduces the delivery delay of downlink traffic in comparison to Class A. Class B operation significantly reduces the percentage of packet loss for downlink traffic even in congested contexts. We conclude that a trade off should be made between having low access delay or packet loss. Both the NS-3 module and data are released as an open-source to the research community.
ISSN:2160-4894
DOI:10.1109/WiMob50308.2020.9253405