Estimated delay spread of industrial plant Month Year doc.: IEEE 802.11-yy/xxxxr0 February 2011 Estimated delay spread of industrial plant Date: 2011-2-24 Authors: Shusaku Shimada, Yokogawa Co. John Doe, Some Company

Month Year doc.: IEEE 802.11-yy/xxxxr0 February 2011 Abstract An simplified ray tracing simulation result of delay spread in typical industrial plant is provided. Shusaku Shimada, Yokogawa Co. John Doe, Some Company

A simplified capture of industrial plant for ray tracing Month Year doc.: IEEE 802.11-yy/xxxxr0 February 2011 A simplified capture of industrial plant for ray tracing area : 300m x 500m approximately Shusaku Shimada, Yokogawa Co. John Doe, Some Company

Rays not more than two reflections with diffraction Month Year doc.: IEEE 802.11-yy/xxxxr0 February 2011 Rays not more than two reflections with diffraction Relative Receiving Power [ dBm ] Time of arrival [ nsec ] Shusaku Shimada, Yokogawa Co. John Doe, Some Company

Estimated result of delay spread Month Year doc.: IEEE 802.11-yy/xxxxr0 February 2011 Estimated result of delay spread -Result of simplified ray tracing maximum delay : 3.3 us rms delay spread : ~ 600 ns -Estimated maximum delay maximum delay : 6.4 us rms delay spread : 1 us -Result suggests S-V type cluster model, typical in indoor WLAN also works in outdoor industrial use case, if the available channel bandwidth is sufficiently wide, e.g. 1~5MHz. Shusaku Shimada, Yokogawa Co. John Doe, Some Company

End doc.: IEEE 802.11-yy/xxxxr0 Month Year February 2011 Shusaku Shimada, Yokogawa Co. John Doe, Some Company