Sub-1 GHz Frequency Band Wireless Coexistence for the Internet of Things

    •  Nagai, Y., Guo, J., Sumi, T., Orlik, P.V., Rolfe, B.A., Mineno, H., "Sub-1 GHz Frequency Band Wireless Coexistence for the Internet of Things", IEEE Access, March 2022.
      BibTeX TR2022-037 PDF
      • @article{Nagai2022mar,
      • author = {Nagai, Yukimasa and Guo, Jianlin and Sumi, Takenori and Orlik, Philip V. and Rolfe, Benjamin A. and Mineno, Hiroshi},
      • title = {Sub-1 GHz Frequency Band Wireless Coexistence for the Internet of Things},
      • journal = {IEEE Access},
      • year = 2022,
      • month = mar,
      • url = {}
      • }
  • MERL Contacts:
  • Research Areas:

    Communications, Optimization, Signal Processing


Motivated by the explosion of the Internet of Things (IoT), we examined Sub-1 GHz
(frequencies below 1 GHz) band wireless technologies that are essential to enable various IoT applications.
IEEE 802.15.4g and IEEE 802.11ah are two wireless technologies developed for outdoor IoT applications such as smart utility, smart city and infrastructure monitoring for which both technologies operate in Sub1 GHz Bands. Our coexistence simulation of IEEE 802.15.4g and IEEE 802.11ah using standard defined coexistence mechanisms shows serious interference problems due to fundamental protocol differences and channel access parameter differences. Accordingly, we proposed IEEE 802.19.3 Task Group formation to lead the IEEE 802.19.3 standard development of IEEE 802.15.4g and IEEE 802.11ah coexistence in the Sub1 GHz band. In addition to our coexistence methods contributed to IEEE 802.19.3 standard, we propose a novel Active Carrier Sense based CSMA/CA mechanism for IEEE 802.15.4g to reduce CSMA/CA failure packet discard under interference from IEEE 802.11ah traffic and to keep interoperability with conventional
IEEE 802.15.4g CSMA/CA mechanism. Our proposed coexistence techniques can improve fair spectrum sharing between IEEE 802.15.4g and IEEE 802.11ah networks for IoT applications.


  • Related News & Events

    •  AWARD    MERL receives 33rd ARIB Radio Achievement Award
      Date: June 28, 2022
      Awarded to: Yukimasa Nagai, Jianlin Guo, Shoichi Kitazawa, Kazuto Yano.
      MERL Contacts: Jianlin Guo; Philip V. Orlik
      Research Areas: Communications, Electric Systems
      • Mitsubishi Electric Corporation (Yukimasa Nagai), MERL (Jianlin Guo), Muroran Institute of Technology (Shoichi Kitazawa) and Advanced Telecommunications Research Institute International (Kazuto Yano) jointly won the 33rd ARIB Radio Achievement Award with "IEEE 802.19.3 Standardization and Development for Sub-1 GHz Wireless Frequency Coexistence". The ARIB is an organization similar to the FCC in the U.S. It is responsible for setting standards for all radio communications in Japan at the request of the Ministry of Internal Affairs and Communications (MIC). In order to promote the effective use of radio waves, the "Radio Achievement Award" is given annually to an individual or organization that has made a special achievement in the effective use of radio waves. This award is the most prestigious award in the field of wireless communications in Japan.