Friendly Jamming in LoRa Physical Layer Using Imperfect Orthogonality of Spreading Factor

Soo Jung Moon, Wonjun Lee

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

Abstract

As the Internet of Things (IoT) requires communication technologies to interconnect many devices, a low-power wide-Area network (LPWAN), especially LoRa, has emerged due to its power and range benefits. Since the physical layer of LoRa remains susceptible to deliberate jamming attacks, we propose a friendly jamming scheme that protects the legitimate communication against attacks by using the imperfect orthogonality of the spreading factor (SF). SF imperfect orthogonality allows a stronger signal to disrupt weaker signal with different SF, therefore we use the strong friendly jamming signal to hide the legitimate signal from attackers. The legitimate receiver can cancel the friendly jamming signal and retrieve the initial data. We implement the scheme with software-defined radios, showing that our friendly jamming scheme is efficacious to impede the jamming attack.

Original languageEnglish
Title of host publication36th International Conference on Information Networking, ICOIN 2022
PublisherIEEE Computer Society
Pages423-428
Number of pages6
ISBN (Electronic)9781665413329
DOIs
Publication statusPublished - 2022
Event36th International Conference on Information Networking, ICOIN 2022 - Virtual, Jeju Island, Korea, Republic of
Duration: 2022 Jan 122022 Jan 15

Publication series

NameInternational Conference on Information Networking
Volume2022-January
ISSN (Print)1976-7684

Conference

Conference36th International Conference on Information Networking, ICOIN 2022
Country/TerritoryKorea, Republic of
CityVirtual, Jeju Island
Period22/1/1222/1/15

Keywords

  • friendly jamming
  • IoT
  • LoRa
  • LPWAN
  • spreading factor

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems

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