In the Report and Order document FCC 16-89, the FCC adopted new technical and service rules mmWave band devices that operate under Part 30 of the FCC rules. These procedures cover base stations, mobile stations and transportable stations. Subparts C and E of 47 CFR Part 30 establish specific requirements and set limits on in-band RF power level, out of band (emission) level, maximum authorized bandwidth, frequency tolerance, and antenna gain (main lobe and sidelobe) characteristics. RF power limits and out of band emission limits are expressed in terms of maximum radiated power (EIRP or EIRP density) and Total Radiated Power (TRP) or conducted power, respectively.
Here is a link to the document "BASIC CERTIFICATION REQUIREMENTS AND MEASUREMENT PROCEDURES FOR UPPER MICROWAVE FLEXIBLE USE SERVICE (UMFUS) DEVICES".