Performance of a Live Multi-Gateway LoRaWAN and Interference Measurement across Indoor and Outdoor Localities

Computers

Eugen Harinda¹  Ryan M. Gibson¹  Ayyaz-UI-Haq Qureshi¹  Hadi Larijani¹  Andrew J. Wixted² 

[1] School of Computing, Engineering and Built Environment, Glasgow Caledonian University, Glasgow G40BA, UK;School of Engineering and Built Environment, Nathan Campus, Griffith University, 170 Kessels Road, Brisbane, QLD 4111, Australia;

关键词: LoRaWAN;    interference;    received signal strength;    live multi-gateway;    non-line-of-sight;    internet of things;   

DOI  :  10.3390/computers11020025

来源: DOAJ

【 摘 要 】

Little work has been reported on the magnitude and impact of interference with the performance of Internet of Things (IoT) applications operated by Long-Range Wide-Area Network (LoRaWAN) in the unlicensed 868 MHz Industrial, Scientific, and Medical (ISM) band. The propagation performance and signal activity measurement of such technologies can give many insights to effectively build long-range wireless communications in a Non-Line of Sight (NLOS) environment. In this paper, the performance of a live multi-gateway in indoor office site in Glasgow city was analysed in 26 days of traffic measurement. The indoor network performances were compared to similar performance measurements from outdoor LoRaWAN test traffic generated across Glasgow Central Business District (CBD) and elsewhere on the same LoRaWAN. The results revealed 99.95% packet transfer success on the first attempt in the indoor site compared to 95.7% at the external site. The analysis shows that interference is attributed to nearly 50 X greater LoRaWAN outdoor packet loss than indoor. The interference measurement results showed a 13.2–97.3% and 4.8–54% probability of interfering signals, respectively, in the mandatory Long-Range (LoRa) uplink and downlink channels, capable of limiting LoRa coverage in some areas.

【 授权许可】

Unknown