Contact-Aware Opportunistic Data Forwarding in Disconnected LoRaWAN Mobile Networks
Po-Yu Chen, Laksh Bhatia, Roman Kolcun, David Boyle, Julie A. McCann

TL;DR
This paper introduces a contact-aware data forwarding scheme for mobile LoRaWAN networks, utilizing a real-time contact probability metric and a backpressure routing protocol to improve data transmission delays and throughput.
Contribution
It proposes a novel real-time contact-aware metric RCA-ETX and a backpressure routing protocol ROBC, along with new LoRaWAN classes, to enhance data forwarding in mobile LoRaWAN networks.
Findings
Reduces data transmission delays by up to 25%.
Achieves a 53% improvement in throughput.
Demonstrates effectiveness using London bus network data.
Abstract
LoRaWAN is one of the leading Low Power Wide Area Network (LPWAN) architectures. It was originally designed for systems consisting of static sensor or Internet of Things (IoT) devices and static gateways. It was recently updated to introduce new features such as nano-second timestamps which open up applications to enable LoRaWAN to be adopted for mobile device tracking and localisation. In such mobile scenarios, devices could temporarily lose communication with the gateways because of interference from obstacles or deep fading, causing throughput reduction and delays in data transmission. To overcome this problem, we propose a new data forwarding scheme. Instead of holding the data until the next contact with gateways, devices can forward their data to nearby devices that have a higher probability of being in contact with gateways. We propose a new network metric called Real-Time…
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Taxonomy
TopicsIoT Networks and Protocols · Opportunistic and Delay-Tolerant Networks · Age of Information Optimization
