Title
Synchronization Uncertainty Versus Power Efficiency in LoRaWAN Networks
Abstract
The availability of low-power wide area networks solutions opens new scenario in many application sectors. Among these technologies, long-range wide area network (LoRaWAN) was originally designed for consumer internet-of-things systems, but now it is investigated for distributed measurement systems applied to more demanding applications, including industry. In order to fulfill real-time requirements, the LoRaWAN end devices (EDs) are frequently requested to share a common timebase (i.e., to be synchronized). This paper deals with the tradeoff between the desired synchronization uncertainty and the energy available in the ED, which is usually battery powered. A new approach based on two algorithms for a posteriori synchronization and uncertainty estimation is proposed. After experimental validation of the proposed algorithms, a set of optimal energy/uncertainty tradeoff curves is obtained with the help of a specific tradeoff algorithm. Finally, the proposed tradeoff methodology is applied to two use cases concerning the design of: an industrial time division multiple access system and a predictive maintenance framework.
Year
DOI
Venue
2019
10.1109/TIM.2018.2859639
IEEE Transactions on Instrumentation and Measurement
Keywords
Field
DocType
Synchronization,Uncertainty,Clocks,Oscillators,Energy consumption,Estimation,Power demand
Electrical efficiency,Synchronization,Use case,A priori and a posteriori,Control engineering,Wide area network,Predictive maintenance,Time division multiple access,Energy consumption,Mathematics,Distributed computing
Journal
Volume
Issue
ISSN
68
4
0018-9456
Citations 
PageRank 
References 
4
0.42
0
Authors
6
Name
Order
Citations
PageRank
Mattia Rizzi140.76
Alessandro Depari212127.34
Paolo Ferrari339259.01
Alessandra Flammini449287.79
Stefano Rinaldi519031.39
Emiliano Sisinni645756.63