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Federal Register / Vol. 86, No. 7 / Tuesday, January 12, 2021 / Rules and Regulations claims, and upon satisfactorily addressing any such claims, permit authorization on a permanent basis. The Commission expressed concern about the complexity of Microsofts suggested coordination procedure and whether such a procedure is even warranted given the existing obligations of unlicensed devices to protect authorized radio services and other protected users.
The Commission also sought comment on a simpler alternative to this procedure. Specifically, the Commission sought comment on whether a party wishing to operate a fixed white space device at an HAAT greater than 250
meters should be required to notify potentially affected, protected entities of their intended operation at least 48
hours in advance. The notification would include the prospective white space device operators contact information, geographic coordinates of the antenna, antenna height above ground and average terrain, EIRP and channels of operation. For notification purposes, a potentially affected TV
station would be defined consistent with Microsofts proposal, i.e., a station would receive notification if its broadcast contour was within the separation distance corresponding to an assumed HAAT 50 meters higher than the actual deployment.
16. Adaptrum, Microsoft, and WISPA
support the more streamlined coordination procedure with broadcasters that the Commission proposed in the NPRM. RADWIN, RED
Technologies, and Dynamic Spectrum Alliance assert that no coordination procedure is necessary since unlicensed device operators already have an obligation to not interfere with authorized services, although RED
Technologies states that it supports the Commissions proposed coordination procedure if one is required.
17. The Commission adopts the simpler procedures proposed in the NPRM, except it will require that notifications be made four calendar days in advance of operating at an increased HAAT, in response to concerns raised by some parties that 48 hours is not sufficient notice. The Commission requires this coordination procedure because white space devices operating at high HAAT have the potential to interfere with TV reception at large distances. Several parties support this simpler procedure, which will ensure that TV broadcasters are aware of new white space device operations with high HAAT that have the potential to affect broadcast operations at greater distances. This procedure provides an opportunity for TV broadcasters to work with white space system operators to
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address any concerns regarding potential harmful interference situations.
18. Parties operating white space devices on an unlicensed basis have an ongoing obligation under the rules to cease operation if harmful interference occurs to any authorized service. The complex multi-step procedure, including a 30-day trial period, initially suggested by Microsoft and supported by NAB is therefore unnecessary. For example, requiring a 30-day trial period appears unnecessary since the unlicensed device operating parameters location, channel, power, and antenna height during a trial period would be no different than those planned for normal operation of the device. In addition, parties who believes that an unlicensed device is causing harmful interference may report this occurrence to the Commission and unlicensed device operator at any time, so there appears to be no need to require a specific time period for reporting and investigating interference complaints.
An unlicensed device that causes harmful interference to an authorized service must cease operation regardless of whether the interference was found during the first 30 days of operation or sometime later.
19. As proposed in the NPRM, the Commission requires that when a party plans to operate a fixed white space device with an HAAT greater than 250
meters, it must contact a white space database and identify all TV broadcast station contours that would be potentially affected by operation at the planned HAAT and EIRP. The Commission will define a potentially affected TV station as one where the protected service contour would be within the applicable separation distance if the white space device were operating at an HAAT of 50 meters above the planned HAAT at the proposed power level. The Commission will also require that the installing party notify each of these broadcast licensees and provide the geographic coordinates of the white space device, relevant technical parameters of the proposed deployment, and contact information.
The Commission will permit this process to be automated through the white space database, with notifications sent to a TV station licensees address of record with the Commission. The white space device may commence operations no earlier than four days after the notification.
20. The Commission believes that increasing the notification period from two to four days balances broadcasters concerns regarding having sufficient time to review proposed white space
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device operations when operating at high HAATs and the need for white space device operators to begin providing service. Because these white space devices are restricted to less congested areas, the Commission does not expect broadcasters to be overloaded with notification requests. Also, because device installation must generally be planned in advance, the four-day requirement should not unduly delay new broadband service to rural and underserved areas.
21. The Commission also adopts the other elements of the coordination procedure proposed in the NPRM.
Specifically, the Commission will require that, upon request, the installing party must provide each potentially affected licensee with information on the time periods of operations. This will help licensees investigate alleged harmful interference from white space devices. The Commission will also require that if the installing party seeks to modify its fixed operations by i increasing its power level, ii moving more than 100 meters horizontally from its location, or iii making an increase in the HAAT or EIRP of the white space device that results in an increase in the minimum required separation distances from co-channel or adjacent channel TV
station contours, then it must conduct a new coordination. This requirement will ensure that TV broadcast licensees have the most current information on white space device operations. The Commission selects 100 meters as the minimum change in location for which a new coordination is required since the tables of separation distances from TV
station contours are rounded to the nearest 0.1 kilometer 100 meters. The Commission see no benefits in requiring a new coordination for changes less than 100 meters.
22. The Commission declines to require parties planning to operate white space devices with an HAAT
above 250 meters to notify public safety or wireless microphone licensees prior to commencing operation, as requested by NPSTC, Sennheiser, and Shure.
Their services are very different from broadcast TV. In the case of broadcast TV, white space devices must protect a consumer receive-only service with very weak signal levels at long distances from the transmitter. By contrast, public safety licensees operate two-way voice and data systems, generally operate with much higher signal levels than those a consumer receives at the edge of a TV
contour and could increase power if necessary. Wireless microphones also operate at significantly higher signal levels than those at the edge of a TV
contour. In addition, the required
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