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Coexistence Assessment of Industrial Wireless Protocols in the Nuclear Facility Environment (NUREG/CR-6939)
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Publication Information
Manuscript Completed: May 2007
Date Published: July 2007
Prepared by
M. Howlader, C.J. Kiger and P.D. Ewing
Oak Ridge National Laboratory
Managed by UT-Battelle, LLC
P.O. Box 2008
Oak Ridge, TN 37831-6283
T. V. Govan, NRC Project Manager
Prepared for
Division of Fuel, Engineering and Radiological Research
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001
NRC Job Code Y6475
Availability
Notice
Abstract
This report details an interference study of the three most prominent wireless devices in use today, using
computer models and simulations. The goal is to determine whether Bluetooth, Zigbee, and Wireless
Fidelity (WiFi) wireless devices can coexist in an industrial environment. All three wireless devices
operate in the 2.4-GHz industrial, scientific, and medical (ISM) frequency band. Simulations are
conducted because of the amount of time that it would take to physically collect measurements for a
plausible coexistence study. Numerous possible combinations of transmitters, receivers, and interferers
are simulated. Both general channel models and site-specific channel models, incorporating the physical
layout of an industrial building, are created and computed to simulate the effects of interference for
certain combinations of different wireless devices. The considered channel models are basic additive
white Gaussian noise (AWGN), general Rayleigh fading, and site-specific Ricean and Rayleigh fading.
The results of the simulations demonstrate the performance of the three wireless devices in a practical
wireless environment and their influence on other wireless devices.
Related work performed to date under JCN Y6475 includes a companion study that identified and
assessed wireless technologies, both current and emerging, that have the potential for deployment in
nuclear facilities. The companion study explored the technology differentiators that need to be considered
before deploying a wireless system. In addition, deployment issues were investigated and current wireless
deployments in nuclear facilities were examined. Results of that study are reported in NUREG/CR-6882,
Assessment of Wireless Technologies and Their Application at Nuclear Facilities (May 2006). Security
issues are also briefly explored in NUREG/CR-6882, but it was not the intent of that study to
comprehensively address wireless security issues. The need for a comprehensive treatment of wireless
security has been recognized and additional work will be performed in this area. The results of the
planned wireless security study are anticipated to augment the findings from this study and the work
reported in NUREG/CR-6882.
PAPERWORK REDUCTION ACT STATEMENT
This NUREG/CR report does not contain any information collections and, therefore, is not subject to the
requirements of the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.).
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