1 research outputs found
Reducing Operation Cost of LPWAN Roadside Sensors Using Cross Technology Communication
Low-Power Wide-Area Network (LPWAN) is an emerging communication standard for
Internet of Things (IoT) that has strong potential to support connectivity of a
large number of roadside sensors with an extremely long communication range.
However, the high operation cost to manage such a large-scale roadside sensor
network remains as a significant challenge. In this paper, we propose
LOC-LPWAN, a novel optimization framework that is designed to reduce the
operation cost using the cross technology communication (CTC). LOC-LPWAN allows
roadside sensors to offload sensor data to passing vehicles that in turn
forward the data to a LPWAN server using CTC aiming to reduce the data
subscription cost. LOC-LPWAN finds the optimal communication schedule between
sensors and vehicles to maximize the throughput given an available budget of
the user. Furthermore, LOC-LPWAN optimizes the fairness among sensors by
allowing sensors to transmit similar amounts of data and preventing certain
sensors from dominating the opportunity for data transmissions. LOC-LPWAN also
provides an option that allows all sensor to transmit data within a specific
delay bound. Extensive numerical analysis performed with real-world taxi data
consisting of 40 vehicles with 24-hour trajectories demonstrate that LOC-LPWAN
improves the throughput by 72.6%, enhances the fairness by 65.7%, and reduces
the delay by 28.8% compared with a greedy algorithm given the same budget