A LoRaWAN Adaptive Retransmission Mechanism

Shahzeb Javed, Dimitrios Zorbas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

LoRaWAN is a widely used protocol for low-power Internet of Things devices. Due to duty cycle restrictions imposed in sub-GHz unlicensed spectrum, the downlink time resources of the gateways are limited. If many end-devices request acknowledgments for their uplink transmissions, the gateway resources will be depleted fast, especially if retransmissions occur. Apart from the obvious effect on the network congestion, this also has a negative effect on the number of unique transmissions that an end-device can send, because repeated retransmissions of the same uplink may postpone scheduled transmissions of new data and violate the application requirements. This paper examines the impact of retransmission attempts on network performance and proposes an adaptive retransmission mechanism with the main goal of increasing the unique packet transmissions and, at the same time, meeting the application requirements. Simulation results show that, even though the packet delivery ratio is dropped, the proposed mechanism not only increases the unique packets, but it also achieves a better energy consumption as compared to an existing approach in the literature and to an approach that always uses the maximum number of retransmissions.

Original languageEnglish
Title of host publication2023 IEEE Conference on Standards for Communications and Networking, CSCN 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages324-327
Number of pages4
ISBN (Electronic)9798350395389
DOIs
Publication statusPublished - 2023
Event2023 IEEE Conference on Standards for Communications and Networking, CSCN 2023 - Munich, Germany
Duration: Nov 6 2023Nov 8 2023

Publication series

Name2023 IEEE Conference on Standards for Communications and Networking, CSCN 2023

Conference

Conference2023 IEEE Conference on Standards for Communications and Networking, CSCN 2023
Country/TerritoryGermany
CityMunich
Period11/6/2311/8/23

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Safety, Risk, Reliability and Quality

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