Abstract
Tests on both commonly-used and new wireless communication standards operating in the 2.4GHz and 5GHz bands (IEEE 802.15.1 Bluetooth, and IEEE 802.11g, 802.11n and 802.11ac Wi-Fi) were carried out in a variety of underground tunnels. In general, it was shown that wireless data communication in tunnels shows significantly increased throughput vs. range characteristics compared to open space or office environments, however, transmission is largely restricted to line-of-sight paths. Particular attention has been given to the effect of tunnel cross-sectional area, the presence of cross-cuts, a comparison between 2.4GHz and 5GHz, and the relative effectiveness of those standards that employ MIMO. Tests also investigated tolerance to loss of line-of-sight. It is anticipated that the results presented here will provide guidance for planning wireless networks for use in mining and transport tunnels, or for temporary use in drains, sewers or service tunnels such as those carrying cables and pipework.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
