University of Oulu

A. Hoeller, R. D. Souza, O. L. Alcaraz Lòpez, H. Alves, M. de Noronha Neto and G. Brante, "Exploiting Time Diversity of LoRa Networks Through Optimum Message Replication," 2018 15th International Symposium on Wireless Communication Systems (ISWCS), Lisbon, Portugal, 2018, pp. 1-5. doi: 10.1109/ISWCS.2018.8491203

Exploiting time diversity of LoRa networks through optimum message replication

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Author: Hoeller Jr., Arliones1,2; Souza, Richard Demo1; Alcaraz López, Onel L.3;
Organizations: 1Electrical & Electron. Eng. Dept., UFSC, Florianópolis, Brazil
2Telecommun. Eng. Dept., IFSC, São José, Brazil
3Centre for Wireless Commun.,Univ. of Oulu, Finland
4Commun. Syst. Lab, UTFPR, Curitiba, Brazil
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.3 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2018
Publish Date: 2018-10-18


LoRA networks have been gaining momentum as an accessible and open solution for massive connectivity in the Internet-of- Things. Besides the popularity, however, academic research has shown that the technology has limitations. In particular to the connectivity argument, it became clear that massive coverage comes at the price of severely reduced duty cycles, and the increased number of users in the network significantly elevates packet loss due to collisions. In this paper, we exploit time diversity to increase the probability of successful packet delivery in LoRA uplink. We build on previous work to model the outage and coverage probabilities of LoRA channels and analyze the use of message replication to create signal diversity. We observed that there is an optimum number of message replicas that minimizes outage probability and avoids high collision probability. We validate the proposed model using numerical simulations.

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Series: International Symposium on Wireless Communication Systems
ISSN: 2154-0217
ISSN-E: 2154-0225
ISSN-L: 2154-0217
ISBN: 978-1-5386-5005-9
ISBN Print: 978-1-5386-5006-6
Pages: 1 - 5
DOI: 10.1109/ISWCS.2018.8491203
Host publication: 2018 15th International Symposium on Wireless Communication Systems (ISWCS), 28-31 August 2018 Lisbon, Portugal
Conference: International Symposium on Wireless Communication Systems (ISWCS)
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: Authors were partially funded by FAPESC and CNPq,at Brazil, and the Academy of Finland 6Genesis Flagship project (Grant no.318927), at Finland.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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