  This work reports on a measurement study to estimate the attenuation of 450
MHz LTE networks. The LTE band 72 is currently deployed in Germany, in
particular for smart grid applications. Due to this use-case, we assume that a
significant amount of future devices will be deployed stationary and indoor
which motivated our campaign. We designed a custom measurement device which
uses commercial off-the-shelf hardware to assess the downlink RSRP of a public
mobile network. In addition, a software has been developed to provide
non-experts the possibility to conduct these measurements in the future. This
software provides the possibility to determine the indoor position based on
ground plans. We conducted measurements at three different buildings. Our
results reveal, that the building attenuation of 450 MHz LTE networks is highly
heterogeneous and mainly depends on the type of the building, the indoor
position and in particular the height of the floor where the device is located.
