  The 60 GHz band (57-71 GHz) has been attracting considerable research
interest thanks to the bandwidth abundance and ruling as an unlicensed band.
The 60 GHz Wi-Fi (also known as WiGig) and 5G New Radio Unlicensed (NR-U) are
among the key access technologies that will operate in the band. This paper
inspects the downlink performance of the two technologies under
inter-technology interference from each other in 60 GHz band. Based on a dense
small-cell setting, this paper finds stochastic models for
signal-to-interference-plus-noise ratio (SINR) and data rate. Via simulations,
this paper discovers that the downlink SINR and data rate follow Gaussian
mixture distributions with three modes representing (i) severely interfered,
(ii) mildly interfered, and (iii) not interfered UEs.
