WISPA Raises Technical Objections to 37 GHz Draft
WISPA urged a few changes to the FCC’s draft 37 GHz item, set for an April 28 commissioner vote. The filing was posted Friday in docket 24-243. WISPA called for more focus on a dynamic spectrum management system for the band. The group also raised questions about power levels as measured in effective isotropic radiated power (EIRP).
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The draft “is not clear on the status of a point-to-multipoint user station operating at mobile power levels (+43 dBm EIRP) or transportable power levels (+55 dBm EIRP). Fixed user stations are allowed +85 dBm EIRP but that power level is not often necessary, particularly in mass-market deployments,” WISPA said: “Requiring all fixed user devices to coordinate individually as base stations do would substantially delay deployment.”
The rules don't “apply antenna direction or directionality to point-to-multipoint or base-to-mobile operations, only point-to-point operations,” WISPA noted. "However, both point-to-multipoint and base-to-mobile base stations often use sectorized antennas, and the radiation pattern envelope of these antennas is well characterized by the vendor."