Measurements to Support Public Safety Communications: Attenuation and Variability of 750 MHz Radio Wave Signals in Four Large Building Structures

摘要

This is the sixth in a series of NIST technical notes (TN) on propagation and detection of radio signals in large building structures (apartment complex, hotel, office buildings, sports stadium, shopping mall, etc.). The first, second, and third NIST Tech Notes (NIST TN 1540, NIST TN 1541, and NIST TN 1542) described experiments related to radio propagation in a structure before, during, and after implosion. The next two Tech Notes (NIST TN 1545 and NIST TN 1546) focused on RF propagation into large buildings, with no implosion results. These reports are intended to give first responders and system designers a better understanding of what to expect from the radio-propagation environment in disaster situations. The overall goal of this project is to create a large, public-domain dataset describing the attenuation and variability of radio signals in various building types in the public safety frequency bands. Because the Federal Communications Commission (FCC) is in the process of auctioning spectrum between 764 MHz and 776 MHz for a new public-safety band, additional measurements were carried out in the 750 MHz frequency band in four different large building structures: a convention center, a high-rise office building, an apartment building, and a laboratory/office building.