Unlicensed Use of the 6 GHz Band

Citation85 FR 31997
Record Number2020-11320
Published date28 May 2020
CourtFederal Communications Commission
Federal Register, Volume 85 Issue 103 (Thursday, May 28, 2020)
[Federal Register Volume 85, Number 103 (Thursday, May 28, 2020)]
                [Proposed Rules]
                [Pages 31997-32002]
                From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
                [FR Doc No: 2020-11320]
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                Proposed Rules
                 Federal Register
                ________________________________________________________________________
                This section of the FEDERAL REGISTER contains notices to the public of
                the proposed issuance of rules and regulations. The purpose of these
                notices is to give interested persons an opportunity to participate in
                the rule making prior to the adoption of the final rules.
                ========================================================================
                Federal Register / Vol. 85, No. 103 / Thursday, May 28, 2020 /
                Proposed Rules
                [[Page 31997]]
                FEDERAL COMMUNICATIONS COMMISSION
                47 CFR Part 15
                [ET Docket No. 18-295, GN Docket No. 17-183; FCC 20-51; FRS 16739]
                Unlicensed Use of the 6 GHz Band
                AGENCY: Federal Communications Commission.
                ACTION: Proposed rule.
                -----------------------------------------------------------------------
                SUMMARY: In this document, the Commission proposes to expand unlicensed
                use of the 5.925-7.125 GHz band (6 GHz band) while protecting the
                incumbent licensed services that operate in this spectrum. The proposed
                rules would allow a new class of unlicensed devices to operate
                throughout the entire 6 GHz band at power levels that are low enough to
                prevent the occurrence of harmful interference to licensed services.
                The Commission seeks comment on permitting unlicensed access points
                that are restricted to indoor operation in the 6 GHz band to operate at
                a power spectral density of 8 dBm/MHz with a maximum permissible
                equivalent isotropically radiated power (EIRP) of 33 dBm, an increase
                of 3 dB over the current rules. The Commission also seeks comment on
                permitting access points that operate under the control of an automated
                frequency coordination (AFC) system in the 5.925-6.425 GHz and 5.512-
                6.875 GHz sub-bands to be used for mobile applications. In addition,
                the document seeks comment on allowing access points that operate under
                AFC control to transmit with more power than the 36 dBm EIRP currently
                permitted.
                DATES: Comments are due June 29, 2020. Reply comments are due July 27,
                2020.
                ADDRESSES: Pursuant to Sec. Sec. 1.415 and 1.419 of the Commission's
                rules, 47 CFR 1.415, 1.419, interested parties may file comments and
                reply comments on or before the dates indicated in the DATES section of
                this document. Comments may be filed using the Commission's Electronic
                Comment Filing System (ECFS). See Electronic Filing of Documents in
                Rulemaking Proceedings, 63 FR 24121 (1998).
                 Electronic Filers: Comments may be filed electronically
                using the internet by accessing the ECFS: http://apps.fcc.gov/ecfs/.
                 Paper Filers: Parties who choose to file by paper must
                file an original and one copy of each filing.
                 Commercial overnight mail (other than U.S. Postal Service
                Express Mail and Priority Mail) must be sent to 9050 Junction Drive,
                Annapolis Junction, MD 20701.
                 U.S. Postal Service first-class, Express, and Priority
                mail must be addressed to 445 12th Street SW, Washington, DC 20554.
                 Effective March 19, 2020, and until further notice, the
                Commission no longer accepts any hand or messenger delivered filings.
                This is a temporary measure taken to help protect the health and safety
                of individuals, and to mitigate the transmission of COVID-19. See FCC
                Announces Closure of FCC Headquarters Open Window and Change in Hand-
                Delivery Policy, Public Notice, DA 20-304 (March 19, 2020). https://www.fcc.gov/document/fcc-closes-headquarters-open-window-and-changes-hand-delivery-policy.
                 During the time the Commission's building is closed to the
                general public and until further notice, if more than one docket or
                rulemaking number appears in the caption of a proceeding, paper filers
                need not submit two additional copies for each additional docket or
                rulemaking number; an original and one copy are sufficient.
                FOR FURTHER INFORMATION CONTACT: Nicholas Oros, Office of Engineering
                and Technology, 202-418-0636, [email protected].
                SUPPLEMENTARY INFORMATION: This is a summary of the Commission's Notice
                of Proposed Rulemaking, ET Docket No. 18-295, GN Docket No. 17-183, FCC
                20-51, adopted April 23, 2020, and released April 24, 2020. The full
                text of this document is available for inspection and copying during
                normal business hours in the FCC Reference Center (Room CY-A257), 445
                12th Street SW, Washington, DC 20554. The full text may also be
                downloaded at: https://www.fcc.gov/edocs/search-results?t=advanced&fccNo=18-147. People with Disabilities: To request
                materials in accessible formats for people with disabilities (braille,
                large print, electronic files, audio format), send an email to
                [email protected] or call the Consumer & Governmental Affairs Bureau at
                202-418-0530 (voice), 202-418-0432 (tty).
                Synopsis
                 1. Discussion. The Commission proposes rules to expand unlicensed
                use of the 5.925-7.125 GHz band (6 GHz band). These proposals build
                upon the rules the Commission adopted for unlicensed use of the 6 GHz
                band in a Report and Order adopted on April 23, 2020, FCC 20-51 (85 FR
                31390, May 26, 2020). In those rules the Commission permitted standard-
                power access points to operate under the control of an automated
                frequency coordination (AFC) system in the 5.925-6.425 GHz and 5.512-
                6.875 GHz sub-bands. Those rules also permitted low-power access points
                to operate indoors throughout the entire 6 GHz band. In this further
                notice of proposed rulemaking (FNPRM), the Commission seeks comment on
                options for further expanding unlicensed operations in the 6 GHz band.
                First, the Commission proposes to authorize operations that are not
                limited to indoor use--and, thus, must be very low power to protect
                incumbents. Second, the Commission seeks comment on increasing the
                power spectral density EIRP for low-power indoor operations from 5 dBm/
                MHz to 8 dBm/MHz. In addition, the Commission seeks comment on
                permitting mobile AFC controlled standard-power access point operation
                and on whether to allow higher power levels for AFC controlled standard
                power access points used in fixed point-to-point applications
                 2. Very Low Power Operation. Apple, Broadcom et al. have requested
                that the Commission permit very low-power unlicensed devices to operate
                in portions of the 6 GHz band with no requirements that the devices be
                kept indoors or be under the control of an AFC system. Apple, Broadcom
                et al. claim that this device class will be critical for supporting
                indoor and outdoor portable use cases such as wearable peripherals
                including augmented reality/virtual reality and other personal-area-
                network applications as well as in-vehicle applications. Apple,
                Broadcom et al. have requested that these very low-
                [[Page 31998]]
                power devices be permitted to transmit with 14 dBm EIRP and -8 dBm/MHz
                power spectral density EIRP.
                 3. The Commission proposes to permit very low power devices to
                operate across the entirety of the 6 GH band, both indoors and
                outdoors, without using an AFC. This would make a contiguous 1200-
                megahertz spectrum block available for new and innovative high-speed,
                short range devices. The Commission seeks comment on this proposal.
                What are the benefits that these devices can bring to the American
                public? What use cases are envisioned for these devices? What form
                factors will be most useful for performing everyday activities? Will
                very low power functionality be built into existing devices such as
                cell phones or will they be standalone devices? What data rates are
                necessary to enable the enhanced applications envisioned for these
                devices? Over what distances will transmissions to very low power
                devices be necessary? Where are these devices most anticipated to be
                used and for what applications? The answers to these questions will
                drive additional comment and decisions on these devices as the
                fundamental decision that must be determined is how much power can
                these very lower power devices be permitted so that the potential of
                causing harmful interference to incumbent 6 GHz band users is
                minimized.
                 4. The Commission seeks comment on the appropriate power level for
                very low power unlicensed devices in the 6 GHz band. In examining what
                power levels the Commission should authorize, there are many factors
                that need to be considered, including body loss (as many use cases will
                be for body worn devices), use of transmit power control, antenna type
                and radiation pattern, use of a contention-based protocol and projected
                activity factor. As a threshold matter, similar to the requirements for
                low power indoor devices, the Commission proposes to require that 6 GHz
                band very low power unlicensed devices incorporate an integrated
                antenna. The Commission seeks comment on these proposals. Using an
                integrated antenna will ensure that users are unable to swap out the
                antenna for a higher gain antenna that could increase the potential for
                interference. The Commission assumes that the antennas will be
                omnidirectional and have minimum gain. Is that a good assumption? Are
                there other antennas anticipated for these devices?
                 5. As the Commission has found for indoor low power devices, should
                the Commission require a contention-based protocol that requires
                devices to sense or listen to the spectrum prior to transmitting to
                ensure all unlicensed devices have an equal opportunity to transmit as
                well as to protect incumbent users? Commenters should address whether
                protocols such as Wi-Fi's current carrier sense multiple access with
                collision avoidance (CSMA/CA) would be used or are there other
                protocols that may work here too. Apple, Broadcom et al. contend that
                such a protocol will protect mobile Broadcast Auxiliary Service
                Incumbents in the U-NII-6 and U-NII-8 bands. The Commission seeks
                comment on the viability of relying on a contention-based protocol to
                protect these uses. Can this protocol also be used to protect Fixed
                Service microwave incumbents? What sensing levels are necessary to
                reliably detect incumbent services to protect them? Wideband and
                ultrawideband unlicensed devices operate in the 6 GHz band. Can the
                contention-based protocol be used to enable co-existence between
                various unlicensed device types? Commenters should provide detailed
                technical information on the contention-based protocol and how it can
                be used to protect existing 6 GHz band users (and whether a requirement
                to include a contention-based protocol would materially affect the
                spectrum very low power devices could use as well as the relevant power
                levels in order to protect incumbent services).
                 6. In determining the proper power level for very low power
                unlicensed devices using 160-megahertz channels, the Commission first
                notes that it authorized low power indoor devices to operate with 5
                dBm/MHz power spectral density (PSD) EIRP and a maximum 27 dBm EIRP.
                This decision is based on an extensive record replete with multiple
                studies--both Monte Carlo and static link budgets. A major contributing
                factor to those analyses was consideration of building entry loss and
                the effect such propagation loss would have on protecting incumbent
                licensees from harmful interference. Building attenuation is a function
                of building construction type (traditional or thermally efficient) and
                the elevation angle of the signal path at the building fa[ccedil]ade.
                Because the major difference between low power indoor unlicensed
                devices and very low power unlicensed devices is that, for the latter
                devices, outdoor use would not be subject to building entry loss, how
                should the Commission evaluate the interference potential of these
                devices as many may be operating outdoors? Can the analyses performed
                for indoor low power devices inform how the Commission proceeds here?
                The Commission notes that for many anticipated use cases, use will
                occur near the ground and in the presence of buildings and other
                objects further subjecting potentially interfering emissions to clutter
                losses. Accounting for clutter losses would infer that more power could
                be permitted without increasing the potential for harmful interference.
                How should the Commission account for clutter losses? What types of
                clutter losses would affect low power device signals? Because clutter
                losses, like building attenuation, is statistical, the Commission seeks
                information on clutter loss statistical distributions that would be
                appropriate to use in any analyses. What information is available? What
                are the minimum, maximum, and mean values that can be expected for
                various locations? How have these distributions been validated?
                Commenters should provide detailed information and reference material
                to support their claims regarding appropriate clutter losses to
                consider.
                 7. Other factors that must be considered when evaluating very low
                power unlicensed devices is body loss and transmit power control. The
                Commission anticipates that most of the devices contemplated for such
                operation will be body worn and subject to such losses. In their
                filings with technical analyses, Apple, Broadcom et al. assume that
                there will be at least 18 dB signal attenuation from body loss and
                transmit power control. Is this assumption realistic? The Commission
                seeks comment on the correct value to consider for body loss and
                transmit power control for these devices. Commenters should provide
                detailed technical analysis supporting the value(s) they believe the
                Commission should rely on to determine the maximum power level for very
                low power devices.
                 8. The Commission also asks commenters to address some specific
                technical solutions and use situations that it believes are likely to
                arise through typical operation. First, cell phones typically employ
                proximity or other sensors to determine if they are close to a body to
                adjust power to meet the Commission's radio frequency (RF) exposure
                rules. Could such a sensor be used in conjunction with these very low
                power devices as a way of adjusting their power based on how much body
                loss might be expected? How would such a system work to both ensure the
                ability of devices to close their links as well as avoiding causing
                harmful interference to incumbent licensees? Should such sensors be
                required on
                [[Page 31999]]
                these devices? If so, what parameters are essential and what algorithms
                would ensure proper power level tuning? How would interference to
                incumbent operations be protected when a very low power unlicensed
                device must use higher power when facing maximum body loss in the
                direction of its intended receiver, but no similar losses in other
                directions? For example, a cell phone in a backpack may be transmitting
                to a body worn device where the intended signal encounters a person's
                full mass in that intended direction, but no losses in other
                directions. Is this a reasonable scenario? What are the potential
                consequences of such operation?
                 9. Alternatively, in use cases where an unlicensed device may not
                encounter much body loss, how would transmit power control be
                implemented to protect incumbent licensees? For example, if a device is
                mounted on a bicycle handlebar and communicating with a body worn
                device, there would be no body loss and little clutter. The Commission
                seeks comment on other use cases and whether proximity sensors could be
                used and how transmit power control would provide sufficient power for
                the application and at the same time protect incumbent licensees. How
                does the expected geometry between these unlicensed devices, which
                presumably will generally be used close to the ground and fixed service
                microwave links which are generally high off the ground and employ
                directional antennas affect the power level the Commission can allow?
                What about the interaction for Broadcast Auxiliary Services?
                 10. The Commission seeks comment on how all these factors should be
                considered in analyses and the various technical solutions can work
                together to authorize very low power unlicensed devices across the 6
                GHz band. The Commission seeks comment on the appropriate factors that
                should be incorporated into a link budget. The Commission also seeks
                comment on the appropriate way to model the potential interactions
                between unlicensed devices and incumbent operations. Should the
                Commission rely on Monte Carlo analysis, link budget analysis, link-
                level simulations that take into account detailed physical layer
                implementations of unlicensed devices as well as incumbent devices, or
                a combination of these methods? Regardless of which type of analysis
                commenters submit, all assumptions should be fully explained and
                supported and all methodologies explained in detail. The Commission
                also seeks comment on what technological measures can be incorporated
                into a very low-power device to support the operations at the requested
                power limits and mitigate the potential for harmful interference to
                incumbent services?
                 11. In contemplating the various factors discussed, the Commission
                seeks comment on what power level the Commission should authorize for
                very low power unlicensed devices across the 6 GHz band. In this
                regard, the Commission notes that, similar to the rules the Commission
                adopted for indoor low power devices in a Report and Order adopted on
                April 23, 2020, FCC 20-51 (85 FR 31390, May 26, 2020), the Commission
                anticipates requiring devices to meet a power spectral density
                requirement, which inherently places a maximum on radiated power. Do
                commenters support this approach? Apple, Broadcom et al. contend that
                14 dBm EIRP and -8 dBm/MHZ PSD EIRP is necessary to enable the
                applications they anticipate for these devices. The Commission seeks
                comment on the power level and other technical or operational rules the
                Commission should consider to maximize the utility of the 6 GHz band
                and protect incumbent licensees. The Commission encourages commenters
                to also conduct testing and measurements of protype devices to support
                whatever rules they advocate for. Such testing can be done under an
                experimental license to the extent needed. What technical measures will
                be effective in meeting the Commission's goals of balancing new devices
                against the need to protect incumbent licensees?
                 12. Power Spectral Density Increase for Low Power Indoor Operation.
                The Commission seeks comment in this FNPRM on whether to allow low
                power indoor devices to operate at a higher power spectral density of 8
                dBm/MHz with a maximum permissible EIRP of 33 dBm when a device uses a
                bandwidth of 320 megahertz in the U-NII-5 through U-NII-8 bands. The
                Commission adopts 5 dBm/MHz in the Report and Order considering the
                analyses in the record based on limited measurements, Monte Carlo
                simulations and static link budgets, none of which fully capture a
                future deployment scenario involving a very large number of unlicensed
                devices operating in a complex interference environment. Analyses that
                can incorporate realistic environments, including accurate link-level
                and system level simulations or measurements which take into account
                the physical layer characteristics of both unlicensed and incumbent
                devices would be more convincing in determining whether a higher PSD
                such as 8 dBm/MHz should be adopted. For devices operating with
                bandwidths other than 320 megahertz, the maximum allowable total power
                would scale accordingly (e.g., 30 dBm with a bandwidth of 160
                megahertz, 27 dBm with a bandwidth of 80 megahertz, 24 dBm with a
                bandwidth of 40 megahertz, and 21 dBm with a bandwidth of 20
                megahertz). The Commission believes that these rules would be useful
                for many indoor devices that require high data rate transmissions such
                as indoor access points communicating with clients like high-
                performance video game controllers, and wearable video augmented
                reality and virtual reality devices.
                 13. Would the proposed power levels be useful for low power indoor
                devices? What are the specific benefits to consumers and users of
                unlicensed operations of a higher power spectral density limit? Are the
                proposed power limits appropriate for preventing interference to
                authorized users in the U-NII-5 through U-NII-8 bands? Do the mobile
                uses of these bands present challenges to adjusting the power limits?
                Should the Commission adopt any other requirements in addition to power
                density and total EIRP limits to protect services in these bands? The
                Commission seeks specific comment on how a higher power spectral
                density limit would impact the analysis of Examples 1B, 4, and 5 from
                the AT&T study submitted to the Commission on November 12, 2019 in ET
                Docket No. 18-295, as well as how common those scenarios are.
                Proponents of low-power indoor operations have convincingly shown that
                even in these examples the likelihood of harmful interference to fixed
                microwave services will be insignificant with a power spectral density
                limit of 5 dBm/MHz. Is the risk materially higher at 8 dBm/MHz? Is so,
                is such risk still low (or even insignificant)? And how common are such
                scenarios? The Commission seeks specific comment from fixed service
                incumbents on what fraction of their operations do each of these
                scenarios represent. And is the Commission correct to surmise that
                these are worst case scenarios (as would be suggested by the incentives
                of those introducing these scenarios into the record) or do they
                actually represent a significant number of operations? Finally, the
                Commission seeks comment on the benefits and costs of the proposal. How
                should the Commission quantify the potential economic benefits of
                authorizing higher power spectral density for low power indoor devices
                and the potential cost to incumbent operations should interference
                occur?
                 14. Mobile Standard-Power Access Point Operation. The Commission
                seeks
                [[Page 32000]]
                comment on whether to allow standard-power access points, under AFC
                control, to be used in mobile applications under rules similar to those
                for personal/portable white space devices. Such usage would expand the
                area over which unlicensed 6 GHz devices can operate to deliver
                additional benefits to the American public. Mobile use at higher power
                levels than what the Commission is proposing, or very low power
                unlicensed devices could also enable new innovative applications. The
                Commission seeks comment on what benefits such usage could provide.
                What new applications are envisioned for higher power mobile operation?
                 15. The white space device rules limit personal/portable devices to
                a lower power level than fixed white space devices. Under the rules a
                personal/portable white space device must determine its geographic
                coordinates using an incorporated geo-location capability prior to its
                initial service transmission, each time the device is activated from a
                power-off condition, and at least once every 60 seconds while in
                operation. In addition, it must access a database to obtain a list of
                available channels for its location and must access the database for an
                updated channel list if it changes location by more than 100 meters
                from the location at which it last obtained its channel list. Also, a
                personal/portable white space device must re-check its location and
                access the database daily to verify that the operating channel(s)
                continue to be available. Further, it may load channel availability
                information for multiple locations, (i.e., in the vicinity of its
                current location) and use that information to define a geographic area
                within which it can operate on the same available channels at all
                locations.
                 16. The Commission seeks comment on whether the Commission should
                allow mobile standard-power access point operation in the 6 GHz band,
                and if so, what technical requirements should apply? Are the personal/
                portable white space device rules an appropriate model to follow in
                developing rules for mobile standard-power access points? Which of
                those rules could be adopted for 6 GHz standard-power devices? Which of
                the white space rules would need to be modified for devices operating
                in the 6 GHz band? What other changes or requirements would be needed?
                Should the Commission define a separate device category for mobile
                standard-power devices? If so, how should these differ from fixed
                standard-power access points? For example, the Commission believes such
                devices would need an integrated geolocation capability and have an
                integrated connectorized antenna. The Commission seeks comment on these
                requirements and any others that need to be placed on these devices.
                 17. What power limit would be appropriate for mobile standard-power
                access points? Could mobile standard-power access points operate at the
                same power as fixed devices or should they have a lower maximum power?
                How should the protection distances be calculated for mobile devices?
                What factors need to be considered to ensure that incumbent operations
                are protected from harmful interference? How often would mobile devices
                need to update their position? Should it be the same requirement as for
                white space devices which require updates every 60 seconds or when the
                location changes by more than 100 meters? Or, are other requirements
                more appropriate? Should the Commission allow devices to preload a list
                of cleared channels over an area (e.g., create a geo-fenced area) and
                operate without updating location with the AFC system so long as they
                stay within the cleared area? Should mobile operation be permitted in
                both the U-NII-5 and U-NII-7 bands?
                 18. What effect would permitting mobile standard-power access point
                operation have on the AFC? Would allowing standard-power access points
                to operate while in motion make the AFC system overly complicated as it
                would need to continuously update available frequency lists for such
                devices? Would mobile applications add substantial congestion to links
                connecting devices to the AFC system as a moving device may need to be
                in near constant contact with the database, potentially degrading the
                quality of service for the expected predominant fixed access point use?
                Would the added complexity of mobile operation delay the AFC system
                development and prevent the American public from reaping the benefits
                of expanded unlicensed use soon? What costs would be involved with
                adding this capability? And, what additional requirements would be
                needed for 6 GHz unlicensed devices? Would additional information need
                to be communicated to the AFC system to identify whether a device is
                fixed or mobile? Would fixed devices need to be updated to send
                additional data too? How would this impact development of devices and
                the timeline for getting them into the marketplace? Are there
                additional security concerns associated with mobile operation? What are
                the costs that might be involved with permitting mobile standard-power
                device operation?
                 19. The Commission seeks comment on all technical and operational
                aspects associated with mobile standard-power device operation.
                Commenters should provide detailed technical analysis to support
                comments advocating technical limits and methods of protecting
                incumbent users from harmful interference. In addition, commenters
                should provide detailed support for any operational rules they believe
                could be adopted to expand 6 GHz unlicensed use to mobile standard-
                power operations while protecting incumbent operations from harmful
                interference.
                 20. Higher Power Limits and Antenna Directivity for Standard-Power
                Access Points. The Commission also seeks comment on whether to allow
                standard-power access points used in fixed point-to-point applications
                to operate at power levels greater than 36 dBm EIRP. In the Report and
                Order, the Commission limits standard power access points to a maximum
                36 dBm EIRP power level to limit the range at which harmful
                interference could potentially occur. That approach deviates from the
                U-NII-1 and U-NII-3 band rules which permit higher power point-to-point
                operations, because of the different incumbent licensee environment in
                the 6 GHz band as compared to 5 GHz. To explore whether similar
                flexibility can be permitted in the 6 GHz band, the Commission seeks
                comment on whether to allow power levels greater than 36 dBm EIRP for
                standard-power access points operating in the U-NII-5 and U-NII-7 bands
                when configured as point-to-point links. As a threshold matter, the
                Commission believes that any flexibility provided for higher power
                should be used for targeted applications that would benefit from point-
                to-point operations, such as backhaul and not for point-to-multipoint
                use or as a scheme for providing more wide area service through
                multiple antennas aimed to cover larger areas. Thus, if the Commission
                allows higher power for point-to-point links, the Commission seeks
                comment on replicating the U-NII-1 and U-NII-3 band requirement on such
                links that would exclude the use of point-to-multipoint systems,
                omnidirectional applications, and multiple collocated transmitters
                transmitting the same information.
                 21. The Commission seeks comment on the appropriate technical
                parameters and limits that would be associated with 6 GHz point-to-
                point operation. How would the Commission ensure that incumbent
                operations will be protected from unlicensed devices operating at
                higher power levels? For example, should there be a limit on the
                maximum
                [[Page 32001]]
                conducted transmitter power as is done in other U-NII bands to
                encourage parties to use higher gain, highly directional antennas? If
                so, what is the appropriate power limit? Should there be specific
                antenna requirements for standard-power access points operating at
                power levels above 36 dBm EIRP, such as a minimum gain or maximum
                beamwidth requirement? To limit the maximum EIRP and thus the distance
                over which stations could be potentially affected, the U-NII-1 band
                requires a 1 dB reduction in maximum conducted output power and maximum
                power spectral density for each 1 dB of antenna gain in excess of 23
                dBi. Would a similar requirement be needed for the 6 GHz band? If so,
                what should be the antenna gain threshold for triggering the power
                reduction? Are any other requirements necessary to protect incumbent
                services? What modifications to the AFC system would be required to
                accommodate higher power point-to-point operations? Would any
                corresponding changes be needed for standard-power access points
                related to the information they exchange with the AFC? If so, how
                quickly could changes be made to the AFC and equipment? What costs are
                involved?
                 22. Regarding unlicensed point-to-point applications in the 6 GHz
                band, the Commission also seeks comment on whether the AFC system
                should be permitted to take the directivity of a standard-power access
                point's antenna into account when determining the available frequencies
                and power levels at a location, rather than assuming an omnidirectional
                antenna. The directional pattern of an access point's antenna could
                affect the identification of available frequencies at a location,
                because when the transmit antenna points away from a microwave
                receiver, the effect would be that the access point has a lower EIRP in
                the direction of the receiver. Under such situations, the required
                separation distance between the access point and microwave receiver
                would be shorter, which could increase the number of locations where a
                device could operate. Would taking access point transmit antenna
                directivity into account result in any significant increase in the
                amount of spectrum available to unlicensed devices?
                 23. If the AFC system considers access point transmit antenna
                directivity, how would the Commission assure the accuracy of antenna
                pattern and orientation information? Would the Commission need to rely
                on a professional installer requirement as the Commission does for
                certain stations in the Citizens Broadband Radio Service? If so, how
                would such a requirement be implemented? Are there other ways to ensure
                reporting accuracy of this information? How could this information be
                supplied to the AFC system? Should there be an automated system, or
                could the Commission allow for a manual system or both? Should the
                Commission require the AFC system to store detailed information, such
                as the antenna gain at one-degree intervals, or could the Commission
                define several simpler generic antenna patterns that approximate
                commonly used antennas? What other criteria would the Commission need
                to specify to ensure that incumbent services are protected? Would the
                benefits of such an approach outweigh the increased costs and
                complexity of the AFC system and the risk that inaccurate antenna
                pattern information might result in harmful interference to incumbent
                services? If the Commission were to permit a change, what specific
                changes are needed to the AFC system? Are corresponding changes needed
                to the standard-power access points' software or hardware? How long
                would it take to make such changes? What costs would be associated with
                such changes?
                 24. Procedural Matters. Paperwork Reduction Act Analysis. This
                document does not contain new or modified information collection
                requirements subject to the Paperwork Reduction Act of 1995 (PRA),
                Public Law 104-13. In addition, therefore, it does not contain any new
                or modified information collection burden for small business concerns
                with fewer than 25 employees, pursuant to the Small Business Paperwork
                Relief Act of 2002, Public Law 107-198, see 44 U.S.C. 3506(c)(4).
                 25. Initial Regulatory Flexibility Analysis. As required by the
                RFA, the Commission has prepared an Initial Regulatory Flexibility
                Analysis (IRFA) of the possible significant economic impact on a
                substantial number of small entities of the proposals addressed in this
                FNPRM. The Full IRFA is found in Appendix C at https://www.fcc.gov/edocs/search-results?t=advanced&fccNo=18-147. Written public comments
                are requested on the IRFA. These comments must be filed in accordance
                with the same filing deadlines for comments on the FNPRM, and they
                should have a separate and distinct heading designating them as
                responses to the IRFA. The Commission's Consumer and Governmental
                Affairs Bureau, Reference Information Center, will send a copy of this
                FNPRM, including the IRFA, to the Chief Counsel for Advocacy of the
                Small Business Administration, in accordance with the RFA.
                 26. People with Disabilities. To request materials in accessible
                formats for people with disabilities (braille, large print, electronic
                files, audio format), send an email to [email protected] or call the
                Consumer & Governmental Affairs Bureau at 202-418-0530 (voice), 202-
                418-0432 (TTY).
                 27. Availability of Documents. Comments, reply comments, and ex
                parte submissions will be publicly available online via ECFS. These
                documents will also be available for public inspection during regular
                business hours in the FCC Reference Information Center, which is
                located in Room CY-A257 at FCC Headquarters, 445 12th Street SW,
                Washington, DC 20554. The Reference Information Center is open to the
                public Monday through Thursday from 8:00 a.m. to 4:30 p.m. and Friday
                from 8:00 a.m. to 11:30 a.m.
                 28. Ex Parte Presentations. The proceedings shall be treated as
                ``permit-but-disclose'' proceedings in accordance with the Commission's
                ex parte rules. Persons making ex parte presentations must file a copy
                of any written presentation or a memorandum summarizing any oral
                presentation within two business days after the presentation (unless a
                different deadline applicable to the Sunshine period applies). Persons
                making oral ex parte presentations are reminded that memoranda
                summarizing the presentation must (1) list all persons attending or
                otherwise participating in the meeting at which the ex parte
                presentation was made, and (2) summarize all data presented and
                arguments made during the presentation. If the presentation consisted
                in whole or in part of the presentation of data or arguments already
                reflected in the presenter's written comments, memoranda or other
                filings in the proceeding, the presenter may provide citations to such
                data or arguments in his or her prior comments, memoranda, or other
                filings (specifying the relevant page and/or paragraph numbers where
                such data or arguments can be found) in lieu of summarizing them in the
                memorandum. Documents shown or given to Commission staff during ex
                parte meetings are deemed to be written ex parte presentations and must
                be filed consistent with rule Sec. 1.1206(b). In proceedings governed
                by rule Sec. 1.49(f) or for which the Commission has made available a
                method of electronic filing, written ex parte presentations and
                memoranda summarizing oral ex parte presentations, and all attachments
                thereto, must be filed through the electronic comment filing system
                [[Page 32002]]
                available for that proceeding, and must be filed in their native format
                (e.g., .doc, .xml, .ppt, searchable .pdf). Participants in these
                proceeding should familiarize themselves with the Commission's ex parte
                rules.
                Ordering Clauses
                 29. It is ordered, pursuant to the authority found in Sections
                4(i), 201, 302, and 303 of the Communications Act of 1934, as amended,
                47 U.S.C. 154(i), 201, 302a, 303, and Sec. 1.411 of the Commission's
                Rules, 47 CFR 1.411, that this FNPRM is hereby adopted.
                 30. It is further ordered that the Commission's Consumer and
                Governmental Affairs Bureau, Reference Information Center, shall send a
                copy of this FNPRM, including the Initial Regulatory Flexibility
                Analysis, to the Chief Counsel for Advocacy of the Small Business
                Administration.
                 31. It is further ordered that the Commission's Consumer and
                Governmental Affairs Bureau, Reference Information Center, shall send a
                copy of this FNPRM, including the Initial Regulatory Flexibility
                Analysis, to Congress and the Government Accountability Office pursuant
                to the Congressional Review Act, see 5 U.S.C. 801(a)(1)(A).
                Federal Communications Commission.
                Cecilia Sigmund,
                Federal Register Liaison Officer.
                [FR Doc. 2020-11320 Filed 5-27-20; 8:45 am]
                BILLING CODE 6712-01-P
                

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