Feasibility of deploying wireless Internet of Things in the unlicensed European 865-868MHz band

Mads Lauridsen, Frank Frederiksen, Ignacio Rodriguez

Research output: Contribution to journalConference article in JournalResearchpeer-review

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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 languageEnglish
JournalProceedings of the IEEE Wireless Communications and Networking Conference
ISSN1525-3511
Publication statusPublished - 16 Apr 2019
EventIEEE Wireless Communications and Networking Conference 2019: Touch through Wireless - Marrakech, Morocco
Duration: 15 Apr 201918 Apr 2019
https://wcnc2019.ieee-wcnc.org/

Conference

ConferenceIEEE Wireless Communications and Networking Conference 2019
CountryMorocco
CityMarrakech
Period15/04/201918/04/2019
Internet address

Fingerprint

Radio frequency identification (RFID)
Internet of things

Keywords

  • IoT
  • RFID
  • mesurements
  • interference
  • performance
  • ISM

Cite this

@inproceedings{e4e908accf19445a9f34684e863db929,
title = "Feasibility of deploying wireless Internet of Things in the unlicensed European 865-868MHz band",
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.",
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author = "Mads Lauridsen and Frank Frederiksen and Ignacio Rodriguez",
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language = "English",
journal = "I E E E Wireless Communications and Networking Conference. Proceedings",
issn = "1525-3511",
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Feasibility of deploying wireless Internet of Things in the unlicensed European 865-868MHz band. / Lauridsen, Mads; Frederiksen, Frank; Rodriguez, Ignacio.

In: Proceedings of the IEEE Wireless Communications and Networking Conference, 16.04.2019.

Research output: Contribution to journalConference article in JournalResearchpeer-review

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AU - Rodriguez, Ignacio

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N2 - 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.

AB - 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.

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