Fig. 1 NTRIP Service Flow
Fig. 2 LoRaWan Topology
Fig. 3 Data Communication of LoRa Classes
Fig. 4 SKT LoRa Location Service Flow
Fig. 5 Road Risk Information Notice Service Scenario
Fig. 6 Organization of Road Risk Information Notice Device
Fig. 7 PCB Design of Road Risk Information Notice Device
Fig. 8 Task Flow Road Risk Information Notice Device
Fig. 9 Design of User GUI
Fig. 10 Hardware Platform
Fig. 11 Radiation Pattern of LoRa Antenna
Fig. 12 Installation of Road Risk Information Notice Device
Fig. 13 Present Road Risk Information on T-Map
Fig. 14 Device Location Status on Server
Table. 1 Re-defined Packet of RTCM
Table. 2 LoRa Antenna Gain
References
- NMNational Maritime PNT Office. NTRIP Service Flow [Internet]. Available : http://www.nmpnt.go.kr/html/kr/dgnss/dgnss_030301.html
- W.S. Jang, Y.K. Kim, and K.Y. Seo, "Architecture Design for Integration o Software RS and IM of Maritime DGPS Reference Station System," Journal of the Korea Institute of Information and Communication Engineering, vol. 18, no. 2, pp. 282-288, Feb. 2014. https://doi.org/10.6109/jkiice.2014.18.2.282
- J. H. Shin, J. Y. Lim, D. H. Kim, and J. D. Kim, "Link Performance Analysis of LoRa for Real-time Information Gathering in Maritime Conditions," Journal of KIISE, vol. 45, no. 3, pp. 303-310, Mar. 2018. https://doi.org/10.5626/JOK.2018.45.3.303
- J. M. Kwak, and S. R. Lee, "Buoy-launched Terminal Equipment and Ship-launched Gateway Equipment Based on LoRa for Identification of Fishing Gear," Journal of the Korea Institute of Information and Communication Engineering, vol. 22, no. 5, pp. 779-786, May. 2018. https://doi.org/10.6109/JKIICE.22018.22.4.779
- J. J. Shin, S. B. Eun, S. S So, and B. H. Kim, "Design and Implementation of LoRa-based Emergency Exit Guide System," Journal of the Korea Institute of Information and Communication Engineering, vol. 22, no. 4, pp. 569-574, Apr. 2018. https://doi.org/10.6109/JKIICE.2018.22.4.569
- LoRa Alliance Technical Marketing Workgroup 1.0, "A technical overview of LoRa(R) and LoRaWAN," 2400 Camino Ramon, #375, San Ramon, CA 94583, 2016.
- U. J. Jung SK Telecom Network Device Tech Lab, "LoRa Device Common Requirement," 65 Uljiro Jung-gu Seoul, 2018.
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