AT&T Urges Cautious Approach on Devices in 6 GHz Band
The FCC shouldn’t provide further flexibility for unlicensed 6 GHz devices without a requirement for automated frequency coordination and there is no need for the FCC to address the issue quickly, AT&T said in a filing posted Monday in docket…
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18-295. AT&T said it disagreed with arguments by NCTA and CableLabs (see 2208160038). “There is no time urgency to act on the proposals to raise the LPI [low power indoor] power limit or to authorize VLP [very low power] operations because it is now apparent that the use cases supporting those proposals can be realized under AFC control,” AT&T said: “Instead of approving higher LPI power devices -- which evidence indicates will harm [fixed service] components of vital telecommunications networks, including Public Safety and Critical Infrastructure systems -- the Commission should opt for the more prudent path of gaining real world experience with how these types of … applications interact with FS microwave links using AFC. Requiring AFC control has no or little cost to manufacturers of LPI and VLP devices given technology developments that already offer multiple means of connecting unlicensed devices using AFC controls.” NAB also countered the NCTA filing. “NAB’s current proposal is to reserve just 55 MHz of the 6 GHz band exclusively for licensed mobile use until real-world data is available to justify the removal of such reservation,” broadcasters said: “This would effectively serve as a pilot program to test the coexistence of unlicensed operations and licensed mobile operations and address our ongoing concerns regarding the potential for harmful interference to licensed mobile operations in the 6 GHz band. Contrary to NCTA’s assertion, we ask neither for a permanent reservation of spectrum nor a wholesale review of unlicensed operations in the band in the future.”