Proposed Rule2024-13266
Use of the 5.850-5.925 GHz Band
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
June 17, 2024
Issuing agencies
Federal Communications Commission
Abstract
In this document, the Office of Engineering and Technology invites supplemental comment to address issues regarding the use of geofencing in cellular-vehicle-to-everything on-board units to reduce out-of-band emission power limits around specified federal radiolocation services.
Full Text
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<title>Federal Register, Volume 89 Issue 117 (Monday, June 17, 2024)</title>
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[Federal Register Volume 89, Number 117 (Monday, June 17, 2024)]
[Proposed Rules]
[Pages 51293-51295]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-13266]
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FEDERAL COMMUNICATIONS COMMISSION
47 CFR Parts 90 and 95
[ET Docket No. 19-138, DA 24-538; FR ID 225149]
Use of the 5.850-5.925 GHz Band
AGENCY: Federal Communications Commission.
ACTION: Proposed rule.
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SUMMARY: In this document, the Office of Engineering and Technology
invites supplemental comment to address issues regarding the use of
geofencing in cellular-vehicle-to-everything on-board units to reduce
out-of-band emission power limits around specified federal
radiolocation services.
DATES: Interested parties may file comments on or before July 5, 2024.
ADDRESSES: Pursuant to sections 1.415 and 1.419 of the Commission's
rules, 47 CFR 1.415, 1.419, interested parties may file comments on or
before the dates provided in the ``Dates'' section of this Proposed
Rule. Comments may be filed using the Commission's Electronic Comment
Filing System (ECFS). You may submit comments, identified by ET Docket
No. 19-138 and referencing this public notice, by any of the following
methods:
<bullet> Electronic Filers: Comments may be filed electronically
using the internet by accessing the ECFS: <a href="https://www.fcc.gov/ecfs/">https://www.fcc.gov/ecfs/</a>.
<bullet> Paper Filers: Parties who choose to file by paper must
file an original and one copy of each filing.
<bullet> Filings can be sent by hand or messenger delivery, by
commercial overnight courier, or by First-Class or overnight U.S.
Postal Service mail. All filings must be addressed to the Commission's
Secretary, Office of the Secretary, Federal Communications Commission.
<bullet> All hand-delivered or messenger-delivered paper filings
for the Commission's Secretary are accepted between 8:00 a.m. and 4:00
p.m. at 9050 Junction Drive, Annapolis Junction, MD 20701. All hand
deliveries must be held together with rubber bands or fasteners. Any
envelopes and boxes must be disposed of before entering the building.
<bullet> Commercial overnight deliveries (other than U.S. Postal
Service Express Mail and Priority Mail) must be sent to 9050 Junction
Drive, Annapolis Junction, MD 20701.
<bullet> U.S. Postal Service First-Class, Express, and Priority
mail must be addressed to Secretary, Federal Communications Commission,
45 L Street NE, Washington, DC 20554.
<bullet> People with Disabilities: Contact the Commission to
request reasonable accommodations (accessible format documents, sign
language interpreters, CART, etc.) by email: <a href="/cdn-cgi/l/email-protection#377174740207037751545419505841"><span class="__cf_email__" data-cfemail="b1f7f2f2848185f1d7d2d29fd6dec7">[email protected]</span></a> or phone:
202-418-0530 or TTY: 202-418-0432.
<bullet> Availability of Documents: Comments and ex parte
submissions will be available via ECFS. Documents will be available
electronically in ASCII, Microsoft Word, and/or Adobe Acrobat.
FOR FURTHER INFORMATION CONTACT: Brian Butler of the Office of
Engineering and Technology, at <a href="/cdn-cgi/l/email-protection#aeecdcc7cfc080ecdbdac2cbdceec8cdcd80c9c1d8"><span class="__cf_email__" data-cfemail="286a5a414946066a5d5c444d5a684e4b4b064f475e">[email protected]</span></a> or 202-418-2702.
SUPPLEMENTARY INFORMATION: This is a summary of the Office of
Engineering and Technology's Public Notice in ET Docket No. 19-138, DA
24-538, released June 11, 2024. The full text of this document is
available for public inspection at the following internet address:
<a href="https://www.fcc.gov/document/oet-seeks-comment-board-unit-power-limits-c-v2x-operations">https://www.fcc.gov/document/oet-seeks-comment-board-unit-power-limits-c-v2x-operations</a>.
Regulatory Flexibility Analysis. The Further Notice of Proposed
Rulemaking (FNPRM) in ET Docket No. 19-138 included an Initial
Regulatory Flexibility Analysis (``IRFA'') pursuant to 5 U.S.C. 603,
exploring the potential impact on small entities of the Commission's
proposals. Use of the 5.850-5.925 GHz Band, 86 FR 23323, 23333-36 (May
3, 2021). We invite parties to file supplemental comments on the IRFA
in light of this request to refresh the record.
Paperwork Reduction Act Analysis. This document does not contain
any new or modified information collection requirements subject to the
Paperwork Reduction Act of 1995, Public Law 104-13. Thus, 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).
Ex Parte Presentations. This proceeding shall be treated as
``permit-but-disclose'' 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)
[[Page 51294]]
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
1.1206(b). In proceedings governed by rule 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 available for that proceeding, and
must be filed in their native format (e.g., .doc, .xml, .ppt,
searchable .pdf). Participants in this proceeding should familiarize
themselves with the Commission's ex parte rules.
Providing Accountability Through Transparency Act: The Providing
Accountability Through Transparency Act, Public Law 118-9, requires
each agency, in providing notice of a rulemaking, to post online a
brief plain-language summary of the proposed rule. The required summary
of this Public Notice is available at <a href="https://www.fcc.gov/proposedrulemakings">https://www.fcc.gov/proposedrulemakings</a>.
Synopsis
By this Proposed Rule, the Office of Engineering and Technology
invites supplemental comment to the FNPRM in the Commission's
proceeding titled Use of the 5.850-5.925 GHz Band, 86 FR 23323 (May 3,
2021), to address issues raised by a commenter regarding the use of
geofencing to allow for higher power limits in devices operating in
certain areas while ensuring that their power is sufficiently limited
in locations near specified federal radiolocation service sites.
Specifically, the National Telecommunications and Information
Administration (NTIA) recently filed a letter in this proceeding making
recommendations to address three specific areas related to the
protection of federal radiolocation systems: general provisions for
cellular vehicle-to-everything (C-V2X) technical and service rules; C-
V2X roadside unit (RSU) equivalent isotropically-radiated power (EIRP)
limits; and EIRP limits for C-V2X on-board units (OBUs). Letter from
Charles Cooper, Associate Administrator, Office of Spectrum Management,
NTIA, to Ronald T. Repasi, Chief, Office of Engineering and Technology
and Joel Taubenblatt, Chief, Wireless Telecommunications Bureau, FCC,
ET Docket No. 19-138 (filed June 7, 2024) (NTIA Letter). The NTIA
suggestions regarding EIRP limits for C-V2X OBUs present a proposal to
allow for higher power limits in devices equipped with geofencing than
in devices not so equipped. We specifically request comment on this
proposal.
In the First Report and Order of this proceeding, Use of the 5.850-
5.925 GHz Band, 86 FR 23281 (May 3, 2021), the Commission adopted
provisions requiring Intelligent Transportation System (ITS) operators
to move Dedicated Short-Range Communications (DSRC) operations out of
the lower 45 megahertz of the 5.850-5.925 GHz band (5.9 GHz band) and
the transition of those operations to C-V2X technology. At the same
time, in the FNPRM, the Commission sought comment on numerous proposals
aimed at finalizing the technical parameters for C-V2X operations. With
regard to OBU device power limits, the Commission proposed to limit C-
V2X OBUs' output power to no more than 20 dBm and EIRP to no more than
23 dBm.
NTIA's recommendations focus on ensuring that the power levels of
C-V2X operations are limited as necessary to protect federal
radiolocation services. Under current Commission rules, the federal
radiolocation service site locations for which protection is sought are
specified in 47 CFR 90.371(b), and the DSRC RSU facilities within
certain radii relative to these locations (``coordination zones'') must
be coordinated with the NTIA prior to authorization. 47 CFR 90.371. The
existing rules addressing power limits for both RSUs and OBUs are
agnostic regarding operations relative to the coordination zones.
Among other things, in its letter, NTIA suggests that the
Commission adopt power requirements for OBUs to ensure federal
radiolocation service sites are protected within the coordination
zones, including optionally incorporating geofencing that would enable
OBUs to operate at variable levels depending on location.
``Geofencing'' is used to create a virtual boundary around a physical
location by enabling a radiofrequency device using a geolocation
capability to determine whether its geographic coordinates are within a
defined geographic area. As proposed by NTIA, an OBU could incorporate
a geolocation capability to respond to the appropriate areas around
federal radiolocation sites, currently enumerated in 47 CFR 90.371(b),
by dynamically reducing power when entering any of those areas. NTIA
suggests that such OBUs would be able to operate without such power
restrictions in areas outside the coordination zones, provided that
they are programmed with information about these sites--geographic
coordinates and a predetermined radius--ensuring that they operate with
reduced EIRP levels within the relevant areas. NTIA suggests that OBU
devices not incorporating a geolocation capability be required to
comply with the more restrictive EIRP limits.
Accordingly, considering the need to protect the federal
radiolocation service through the optional use of geofencing
techniques, NTIA suggests the following EIRP power spectral density
(PSD) limits for C-V2X OBUs operating without a geofencing capability
at all locations and those that incorporate a geofencing capability
when operating inside of a coordination zone:
<bullet> 10 megahertz channel (5.895-5.905 GHz): 23 dBm/10 MHz
EIRP; 10 megahertz channel (5.905-5.915 GHz): 33 dBm/10 MHz EIRP,
reduced to 27 dBm within <plus-minus>5 degrees of horizontal;
<bullet> 10 megahertz channel (5.915-5.925 GHz): 33 dBm/10 MHz
EIRP, reduced to 27 dBm within <plus-minus>5 degrees of horizontal;
<bullet> 20 megahertz channel (5.895-5.915 GHz): 23 dBm/20 MHz
EIRP;
<bullet> 20 megahertz channel (5.905-5.925 GHz): 33 dBm/20 MHz
EIRP, reduced to 27 dBm within <plus-minus>5 degrees of horizontal; and
<bullet> 30 megahertz channel (5895-5925 GHz): 23 dBm/30 MHz EIRP.
NTIA suggests the following EIRP PSD limits for C-V2X OBUs that
incorporate a geofencing capability when operating outside of a
coordination zone:
<bullet> 10 megahertz channel (5.895-5.905 GHz): 33 dBm/10 MHz
EIRP;
<bullet> 10 megahertz channel (5.905-5.915 GHz): 33 dBm/10 MHz
EIRP;
<bullet> 10 megahertz channel (5.915-5.925 GHz): 33 dBm/10 MHz
EIRP;
<bullet> 20 megahertz channel (5.895-5.915 GHz): 33 dBm/20 MHz
EIRP;
<bullet> 20 megahertz channel (5.905-5.925 GHz): 33 dBm/20 MHz
EIRP; and
<bullet> 30 megahertz channel (5.895-5.925 GHz): 33 dBm/30 MHz
EIRP.
NTIA also suggests that manufacturers implementing a geofencing
capability would need to specifically demonstrate and certify
compliance of the capability within the equipment certification process
specified in part 2 of the
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Commission's rules. In addition, NTIA suggests that responsible parties
should provide a mechanism to update the OBUs with new information
within a reasonable timeframe if geofencing locations and parameters
are subsequently modified.
Through this Proposed Rule, we seek comment on NTIA's
recommendations that the Commission modify its part 95 rules to adopt
power limit rules for C-V2X OBUs that include provisions for the
optional use of geofencing techniques. Given that using geofencing
would be an option and not required, we seek comment on the likelihood
of manufacturers incorporating such a capability. What performance
gains would be expected for C-V2X devices and the ITS overall when a
geolocation capability is used as compared to if it is not? Are NTIA's
recommendations regarding the power limits for C-V2X devices inside and
outside the coordination areas appropriate? Would NTIA's
recommendations provide benefits for C-V2X devices and ITS as compared
to the Commission's C-V2X OBU rules originally proposed in this
proceeding? What would be the relative complexity for adding a
geolocation capability and the associated logic necessary for the OBU
to adjust its power when in a coordination zone compared to devices
without such capability? Would there be increased costs? If so, what
would be the expected cost increase? What is the likelihood that
manufacturers would incorporate a geofencing capability into their
devices given any increased device complexity, additional compliance
requirements, and increased cost? Conversely, would the proposed limits
have a detrimental effect on operations or compliance? What methods
could be used to update deployed OBUs to reflect revised geofencing
locations and parameters?
Federal Communications Commission.
Ronald T. Repasi,
Chief, Office of Engineering and Technology.
[FR Doc. 2024-13266 Filed 6-14-24; 8:45 am]
BILLING CODE 6712-01-P
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