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Do LoRa Low-Power Wide-Area Networks Scale?
Lancaster University.
Lancaster University.
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Architecture and Computer Communication. (UNO)ORCID iD: 0000-0002-2586-8573
Univ. Nac. de Cuyo, Argentina.
2016 (English)Conference paper (Refereed)
Abstract [en]

New Internet of Things (IoT) technologies such as LongRange (LoRa) are emerging which enable power ecientwireless communication over very long distances. Devicestypically communicate directly to a sink node which removesthe need of constructing and maintaining a complex multi-hop network. Given the fact that a wide area is coveredand that all devices communicate directly to a few sinknodes a large number of nodes have to share the commu-nication medium. LoRa provides for this reason a rangeof communication options (centre frequency, spreading fac-tor, bandwidth, coding rates) from which a transmitter canchoose. Many combination settings are orthogonal and pro-vide simultaneous collision free communications. Neverthe-less, there is a limit regarding the number of transmitters aLoRa system can support. In this paper we investigate thecapacity limits of LoRa networks. Using experiments wedevelop models describing LoRa communication behaviour.We use these models to parameterise a LoRa simulation tostudy scalability. Our experiments show that a typical smartcity deployment can support 120 nodes per 3.8 ha, which isnot sucient for future IoT deployments. LoRa networkscan scale quite well, however, if they use dynamic commu-nication parameter selection and/or multiple sinks.

Place, publisher, year, edition, pages
Keyword [en]
LoRa, Low-Power Wide-Area Network, Scalability Analysis
National Category
Computer Engineering
Research subject
Computer Science with specialization in Computer Communication
URN: urn:nbn:se:uu:diva-306901OAI: diva2:1044681
The 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems
Available from: 2016-11-04 Created: 2016-11-04 Last updated: 2016-11-09Bibliographically approved

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