Abstract
The European Commission has made the unlicensed 865-868MHz band available for deployment of wireless Internet of Things. The band is mainly used by RFID systems, but the current activity levels are unknown. In this paper, the in-band power levels are measured in five areas. The measurements show that RFID interrogators emit high-power single tone-like signals in four subbands, when active. Most signals are 0.4 s long, but it differs whether the subbands are used in a coordinated way or not. In some areas the RFID systems use a single subband about 80% of the time, while in other areas two to three subbands are occupied simultaneously 65-80% of the time. The measurements are used to evaluate the performance of a narrowband wireless Internet of Things technology, if it were to be deployed in the 865-868MHz band. Specifically, the measurements serve as interference input in a calculation of error rate probability. If the least interfered subband is always selected for the wireless Internet of Things transmission the error rate is 0%for desired signals up to −115 dBm, while if the subband with highest average interference is used, the error rate is up to 7.5% and at least 25% at −100 dBm and −120 dBm, respectively.
Original language | English |
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Title of host publication | 2019 IEEE Wireless Communications and Networking Conference (WCNC) |
Number of pages | 5 |
Publisher | IEEE |
Publication date | 31 Oct 2019 |
Pages | 1-5 |
Article number | 8886048 |
ISBN (Print) | 978-1-5386-7647-9 |
ISBN (Electronic) | 978-1-5386-7646-2 |
DOIs | |
Publication status | Published - 31 Oct 2019 |
Event | IEEE Wireless Communications and Networking Conference 2019: Touch through Wireless - Marrakech, Morocco Duration: 15 Apr 2019 → 18 Apr 2019 https://wcnc2019.ieee-wcnc.org/ |
Conference
Conference | IEEE Wireless Communications and Networking Conference 2019 |
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Country/Territory | Morocco |
City | Marrakech |
Period | 15/04/2019 → 18/04/2019 |
Internet address |
Series | Proceedings of the IEEE Wireless Communications and Networking Conference |
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ISSN | 1525-3511 |
Keywords
- IoT
- RFID
- mesurements
- interference
- performance
- ISM