CRAM: Robust Medium Access Control for LPWAN using Cryptographic Frequency Hopping

Absar Ul Haque Ahmar, Emekcan Aras, Thien Duc Nguyen, Sam Michiels, Wouter Joosen, Danny Hughes

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

Low power wide area networks (LPWANs) are being applied in many Internet of Things applications around the globe. These technologies offer economic coverage of wide areas, while retaining low power operation. LoRaWAN is a key technology in this space, with a world-wide presence and millions of devices deployed in the field. Despite this early success, recent research has shown that LoRa performs poorly in dense deployments with a high degree of contention. Furthermore, LoRa is not robust against selective jamming attacks. In this paper, we propose CRAM: a cryptographic frequency hopping MAC protocol designed for the LoRa physical layer that reduces contention by fairly exploiting all available frequency space, while making it significantly more difficult to perform selective jamming. Our evaluation shows that CRAM significantly reduces contention, thereby dramatically increasing scalability and reliability in comparison to the standard LoRa protocol.

Original languageEnglish
Title of host publicationProceedings - 16th Annual International Conference on Distributed Computing in Sensor Systems, DCOSS 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages95-102
Number of pages8
ISBN (Electronic)9781728143514
DOIs
Publication statusPublished - May 2020
Externally publishedYes
Event16th Annual International Conference on Distributed Computing in Sensor Systems, DCOSS 2020 - Virtual, Online, United States
Duration: 15 Jun 202017 Jun 2020

Publication series

NameProceedings - 16th Annual International Conference on Distributed Computing in Sensor Systems, DCOSS 2020

Conference

Conference16th Annual International Conference on Distributed Computing in Sensor Systems, DCOSS 2020
Country/TerritoryUnited States
CityVirtual, Online
Period15/06/2017/06/20

Keywords

  • Internet of Things (IoT)
  • LoRa
  • Low Power Wide Area Networks (LPWAN)
  • Medium Access Control (MAC)
  • Time Synchronized Channel Hopping (TSCH)

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