IoT 19(19): e1

Research Article

Sub-GHz Band Communication Bridge Connecting TCP/IP Network

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  • @ARTICLE{10.4108/eai.13-7-2018.163921,
        author={Satoshi Kodama and Rei Nakagawa},
        title={Sub-GHz Band Communication Bridge Connecting TCP/IP Network},
        journal={EAI Endorsed Transactions on Internet of Things},
        keywords={IoT, LPWA, Heterogeneous Networks, Software-Defined Network, Communication Bridge},
  • Satoshi Kodama
    Rei Nakagawa
    Year: 2019
    Sub-GHz Band Communication Bridge Connecting TCP/IP Network
    DOI: 10.4108/eai.13-7-2018.163921
Satoshi Kodama1, Rei Nakagawa2,*
  • 1: Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba Prefecture, Japan
  • 2: Graduate School of Informatics and Engineering, University of Electro-Communication, 1-5-1 Chofugaoka, Chofu, Tokyo, Japan
*Contact email:


Recently, low power wide area (LPWA) communication devices have attracted attention in the construction of wide area sensor networks. A type of LPWA device called a sub-GHz band communication device allows a 1-hop wide area communication system to have improved power consumption. However, a sub-GHz band communication system is not scalable due to the lack of compatibility with heterogeneous communication devices, such as WiFi and LTE. In this paper, we propose a sub-GHz band communication bridge that builds a cross-over communication system connecting a conventional TCP/IP network and LPWA network. The communication bridge enables scalable TCP/IP network services (e.g., HTTP) by transmitting an ethernet frame over an LPWA network. Through experiments using IM920, a dedicated device for 920 MHz band communication, we evaluated the performance and behavior of communication through TCP applications over a TCP/IP network and LPWA network connected by the proposed communication bridge.