Emission Limits for the 24.25-27.5 GHz Band, 28522-28523 [2021-10536]
Download as PDF
28522
Federal Register / Vol. 86, No. 101 / Thursday, May 27, 2021 / Proposed Rules
in rulemaking proceedings. In this
proceeding, the Bureau has already
granted a 30-day extension of comment
and reply deadlines to allow parties
additional time to develop submissions
that address complex issues raised in
the Notice.15 Because a further
extension of time would only delay
receipt of these comments and parties
will have time to reply to these
submissions, the Commission is not
persuaded that such an extension is
warranted. To the extent that members
of the 12 GHz Alliance have input on
whether filings in the comment stage
demonstrate the feasibility of sharing in
this band, they may submit such input
at the reply stage and in subsequent ex
parte presentations. The Commission
therefore denies the Further Extension
Request. The deadlines for filing
comments and reply comments in this
proceeding continue to be May 7, 2021,
and June 7, 2021, respectively.
II. Ordering Clause
5. Accordingly, it is ordered that,
pursuant to section 4(i) of the
Communications Act of 1934, as
amended, 47 U.S.C. 154(i), 0.131, 0.331,
and § 1.46 of the Commission’s rules, 47
CFR 0.131, 0.331, and § 1.46, the
Further Extension Request filed by
WorldVu Satellites Limited (ONEWEB),
Kepler Communications, SpaceX
Holdings, LLC, Intelsat License LLC,
and SES S.A., on April 26, 2021, is
denied.
Federal Communications Commission.
Amy Brett,
Acting Chief of Staff, Wireless
Telecommunications Bureau.
[FR Doc. 2021–11066 Filed 5–26–21; 8:45 am]
BILLING CODE 6712–01–P
FEDERAL COMMUNICATIONS
COMMISSION
47 CFR Parts 2 and 30
[ET Docket No. 21–186; GN Docket No. 14–
177; DA 21–482; FRS 27278]
Emission Limits for the 24.25–27.5 GHz
Band
Federal Communications
Commission (FCC).
ACTION: Requests for comments.
AGENCY:
In this document, The Office
of Engineering and Technology (OET)
and the Wireless Telecommunications
Bureau (WTB) seek comment on
implementing certain of the decisions of
the World Radiocommunication
Conference held by the International
jbell on DSKJLSW7X2PROD with PROPOSALS
SUMMARY:
15 Extension
VerDate Sep<11>2014
Order at para. 3.
16:46 May 26, 2021
Jkt 253001
Telecommunication Union (ITU) in
2019 (WRC–19) regarding the 24.25–
27.5 GHz band. Specifically, OET and
WTB seek comment on aligning the
FCC’s rules with the unwanted
emissions limits into the passive 23.6–
24.0 GHz band that were adopted at
WRC–19.
DATES: Comments are due on or before
June 28, 2021, and reply comments are
due on or before July 26, 2021.
ADDRESSES: Federal Communications
Commission, 45 L Street NE,
Washington, DC 20554.
FOR FURTHER INFORMATION CONTACT:
Nicholas Oros, Office of Engineering
and Technology, 202–418–0636,
Nicholas.Oros@fcc.gov or John Schauble
of the Wireless Telecommunications
Bureau, at (202) 418–0797, or
John.Schauble@fcc.gov.
SUPPLEMENTARY INFORMATION: This is a
summary of the Commission’s
document, Public Notice, DA 21–482,
ET Docket No. 21–186, GN Docket No.
14–177, released April 26, 2021. The
full text of this document is available for
public inspection and can be
downloaded at: https://www.fcc.gov/
document/oet-wtb-seek-commentemission-limits-2425-275-ghz-band or
by using the search function for ET
Docket No. 21–186 on the Commission’s
ECFS web page at www.fcc.gov/ecfs.
Synopsis
1. In 2017, the Commission
established service rules for fixed and
mobile operation in the 24.25–24.45
GHz and 24.75–25.25 GHz bands
(collectively, 24 GHz band) under the
Upper Microwave Flexible Use Service
(UMFUS). The Commission applied the
UMFUS rules, including the technical
rules, to the 24 GHz band. The UMFUS
rules specify that emissions outside of a
licensee’s assigned frequency block
must be limited to ¥13 dBm/MHz. With
respect to the passive systems operating
in the 23.6–24 GHz band, the
Commission noted that ongoing
international studies include analyses to
determine International Mobile
Telecommunications (IMT) out-of-band
emission limits necessary to protect
passive sensors onboard weather
satellites in that band, and it
acknowledged that the Commission’s
UMFUS rules might be revisited once
these international studies have been
completed.
2. WRC–19 allocated 24.25–25.25 GHz
to mobile (except aeronautical) on a
primary basis in Regions 1 and 2,
globally identified the 24.25–27.5 GHz
band for IMT, and established limits of
unwanted emissions that apply to IMT
in the 24.25–27.5 GHz band to protect
PO 00000
Frm 00022
Fmt 4702
Sfmt 4702
Earth Exploration-Satellite Service
(EESS) passive systems in the 23.6–24.0
GHz band from harmful interference. To
protect EESS passive systems, WRC–19
modified a footnote to the International
Table of Allocations to specify that
Resolution 750 (Rev. WRC–19) applies
to the 24.25–27.5 GHz band. Resolution
750 specifies unwanted emission limits
as the amount of power that may be
radiated into any 200 megahertz of the
23.6–24.0 GHz passive band by IMT
base stations and IMT mobile stations
operating in the 24.25–27.5 GHz band.
Resolution 750 specifies unwanted
emission limits in terms of Total
Radiated Power (TRP) that currently
apply to IMT stations and stricter
emission limits that are effective for
IMT stations brought into use after
September 1, 2027. These unwanted
emission limits are shown in Table 1.
TABLE 1—WRC–19 RESOLUTION 750
UNWANTED EMISSIONS PERMITTED
WITHIN ANY 200 MEGAHERTZ IN THE
23.6–24 GHZ PASSIVE BAND
Type of
station
IMT Base
Stations
IMT Mobile
Stations
Current
TRP limits
TRP limits after
Sept. 1, 2027
¥33 dBW
¥39 dBW
¥29 dBW
¥35 dBW
3. The WRC–19 Final Acts updated
the ITU Radio Regulations, including
Resolution 750. The National
Telecommunications and Information
Administration (NTIA), FCC, and the
Department of State share responsibility
for implementing the WRC Final Acts in
the United States. The Commission has
authority to implement the changes to
the Radio Regulations through its
rulemaking proceedings. Given the
importance of limiting unwanted
emissions into the passive 23.6–24.0
GHz band, OET and WTB seek to
develop a record on implementing the
changes to the emission limit in
Resolution 750 applicable to active
services in the 24 GHz band.
4. OET and WTB seek comment
broadly on implementing certain of the
WRC–19 outcomes with respect to the
24.25–27.5 GHz band. Noting that the
United States is a signatory to the treaty
text of the Radio Regulations, OET and
WTB seek comment on modifying the
Commission’s rules in response to the
unwanted emission limits and
international allocation table footnotes
adopted for the 24.25–27.5 GHz band at
the WRC–19. These rule changes could
include, for example, adding footnotes
to the United States Table of Frequency
E:\FR\FM\27MYP1.SGM
27MYP1
jbell on DSKJLSW7X2PROD with PROPOSALS
Federal Register / Vol. 86, No. 101 / Thursday, May 27, 2021 / Proposed Rules
Allocations or aligning the
Commission’s technical rules.
5. Appropriate out-of-band emission
limits in the 24.25–27.5 GHz band are
important to protect passive sensing
operations in the 23.6–24.0 GHz band.
The limits adopted at WRC–19 are to be
measured within a 200-megahertz
bandwidth within the 400-megahertz
23.6–24 GHz passive band. For
comparison with the Resolution 750
unwanted emission limit, a signal at
¥13 dBm/MHz (conductive or TRP)
would result in ¥20 dBW within a 200megahertz bandwidth. However, OET
and WTB note that the ¥13 dBm/MHz
emission limit applies at the edge of the
UMFUS band—i.e., 24.25 GHz. Given
this, OET and WTB seek to understand
what level of emissions can be expected
within the 23.6–24 GHz band from
UMFUS transmitters, and whether and
to what extent harmful interference to
passive systems operating in the 23.6–
24.0 GHz band is expected to occur from
new 5G deployments at the current
UMFUS limit.
6. Recognizing that the unwanted
emission limits in Resolution 750 and
the current out-of-band emission limits
in the UMFUS rules are specified
differently, and further recognizing the
two-phased approach for the unwanted
emissions limits that were adopted in
WRC–19, OET and WTB seek
information on whether and how
equipment intended for use under the
UMFUS rules in the 24.25–24.45 GHz
and 24.75–25.25 GHz bands can be
designed to conform to the Resolution
750 limits—both the current limits and
the more restrictive limits that apply to
new equipment brought into use after
September 1, 2027. Can licensees meet
the WRC–19 TRP limits by the relevant
deadlines? Is it possible that licensees
can meet the ¥39 dBW limit for IMT
base stations and the ¥35 dBW limit for
IMT mobile stations prior to 2027? What
steps, if any, can the Commission take
to help accelerate development and
deployment of equipment that complies
with the post-2027 limits?
7. OET and WTB note that Resolution
750 specifies TRP as the only means of
meeting the required emission limits.
Are there any difficulties in performing
over the air TRP measurements at such
low signal levels in the 24.25–24.45
GHz and 24.75–25.25 GHz bands?
Consistent with the current UMFUS
rules, should a conductive power
methodology also be included as an
alternative means for equipment
certification?
8. The UMFUS rules allow licensees
flexibility as to the services they will
deploy and the architecture of their
networks. Under these rules licensees
VerDate Sep<11>2014
16:46 May 26, 2021
Jkt 253001
will be able to deploy mobile services.
Licensees will also have the freedom to
implement point-to-point and point-tomultipoint systems. The unwanted
emission limits of Resolution 750 apply
only to IMT base stations and mobile
stations. The Commission’s rules do not
define IMT and do not require that
equipment complying with a particular
technical standard be used in a band
licensed under the UMFUS rules. If the
Commission were to adopt the emission
limits in Resolution 750 for the 24.25–
27.5 GHz band, how should it determine
to what stations these limits will apply?
Should they only apply to systems that
meet the definition of IMT as specified
by the ITU? Should the rules apply to
point-to-point and point-to-multipoint
equipment licensed under the UMFUS
rules? Should any mobile UMFUS
equipment be required to comply with
these unwanted emission limits
regardless of the technology used, the
application, and the density of
deployment?
Federal Communications Commission.
Ronald T. Repasi,
Acting Chief, Office of Engineering and
Technology.
[FR Doc. 2021–10536 Filed 5–26–21; 8:45 am]
BILLING CODE 6712–01–P
FEDERAL COMMUNICATIONS
COMMISSION
47 CFR Part 73
[MB Docket No. 21–219; RM–11907; DA 21–
583; FR ID 28088]
Television Broadcasting Services,
Quincy, Illinois
Federal Communications
Commission.
ACTION: Proposed rule.
AGENCY:
The Commission has before it
a petition for rulemaking filed by
WGEM License, LLC (Petitioner), the
licensee of WGEM–TV (NBC), channel
10, Quincy, Illinois. The Petitioner
requests the substitution of channel 19
for channel 10 at Quincy in the DTV
Table of Allotments.
DATES: Comments must be filed on or
before June 28, 2021 and reply
comments on or before July 12, 2021.
ADDRESSES: Federal Communications
Commission, Office of the Secretary, 45
L Street NE, Washington, DC 20554. In
addition to filing comments with the
FCC, interested parties should serve
counsel for the Petitioner as follows:
Patrick Cross, Esq., Brooks, Pierce,
McLendon, Humphrey & Leonard, LLP,
SUMMARY:
PO 00000
Frm 00023
Fmt 4702
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28523
1700 Wells Fargo Capitol Center,
Raleigh, North Carolina 27601.
FOR FURTHER INFORMATION CONTACT:
Joyce Bernstein, Media Bureau, at (202)
418–1647 or Joyce.Bernstein@fcc.gov.
SUPPLEMENTARY INFORMATION: In support
of its channel substitution request, the
Petitioner states that the Commission
has recognized that VHF channels have
certain propagation characteristics that
pose challenges for their use in
providing digital television service,
including propagation characteristics
that allow undesired signals and noise
to be receivable at relatively far
distances and nearby electrical devices
to cause interference. Petitioner states
that it has attempted to address the
station’s reception issues through
multiple technical avenues, including
requesting a waiver of the permissible
power limits set forth in the
Commission’s rules, but continues to
receive numerous complaints of poor or
no reception from viewers. In addition,
while the proposed channel 19 facility
will result in a slight reduction
(approximately 9.4 kilometers) in
WGEM–TV’s noise limited contour, the
Petitioner states that use of the LongleyRice propagation model indicates that
the proposed channel 19 facility will
have an extended terrain-limited service
throughout the gap area, and thus, there
will be no loss of service.
This is a synopsis of the
Commission’s Notice of Proposed
Rulemaking, MB Docket No. 21–219;
RM–11907; DA 21–583, adopted May
17, 2021, and released May 17, 2021.
The full text of this document is
available for download at https://
www.fcc.gov/edocs. To request materials
in accessible formats (braille, large
print, computer diskettes, or audio
recordings), please send an email to
FCC504@fcc.gov or call the Consumer &
Government Affairs Bureau at (202)
418–0530 (VOICE), (202) 418–0432
(TTY).
This document does not contain
information collection requirements
subject to the Paperwork Reduction Act
of 1995, Public Law 104–13. In addition,
therefore, it does not contain any
proposed 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). Provisions of the Regulatory
Flexibility Act of 1980, 5 U.S.C. 601–
612, do not apply to this proceeding.
Members of the public should note
that all ex parte contacts are prohibited
from the time a Notice of Proposed
Rulemaking is issued to the time the
matter is no longer subject to
E:\FR\FM\27MYP1.SGM
27MYP1
Agencies
[Federal Register Volume 86, Number 101 (Thursday, May 27, 2021)]
[Proposed Rules]
[Pages 28522-28523]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-10536]
-----------------------------------------------------------------------
FEDERAL COMMUNICATIONS COMMISSION
47 CFR Parts 2 and 30
[ET Docket No. 21-186; GN Docket No. 14-177; DA 21-482; FRS 27278]
Emission Limits for the 24.25-27.5 GHz Band
AGENCY: Federal Communications Commission (FCC).
ACTION: Requests for comments.
-----------------------------------------------------------------------
SUMMARY: In this document, The Office of Engineering and Technology
(OET) and the Wireless Telecommunications Bureau (WTB) seek comment on
implementing certain of the decisions of the World Radiocommunication
Conference held by the International Telecommunication Union (ITU) in
2019 (WRC-19) regarding the 24.25-27.5 GHz band. Specifically, OET and
WTB seek comment on aligning the FCC's rules with the unwanted
emissions limits into the passive 23.6-24.0 GHz band that were adopted
at WRC-19.
DATES: Comments are due on or before June 28, 2021, and reply comments
are due on or before July 26, 2021.
ADDRESSES: Federal Communications Commission, 45 L Street NE,
Washington, DC 20554.
FOR FURTHER INFORMATION CONTACT: Nicholas Oros, Office of Engineering
and Technology, 202-418-0636, [email protected] or John Schauble of
the Wireless Telecommunications Bureau, at (202) 418-0797, or
[email protected].
SUPPLEMENTARY INFORMATION: This is a summary of the Commission's
document, Public Notice, DA 21-482, ET Docket No. 21-186, GN Docket No.
14-177, released April 26, 2021. The full text of this document is
available for public inspection and can be downloaded at: https://www.fcc.gov/document/oet-wtb-seek-comment-emission-limits-2425-275-ghz-band or by using the search function for ET Docket No. 21-186 on the
Commission's ECFS web page at www.fcc.gov/ecfs.
Synopsis
1. In 2017, the Commission established service rules for fixed and
mobile operation in the 24.25-24.45 GHz and 24.75-25.25 GHz bands
(collectively, 24 GHz band) under the Upper Microwave Flexible Use
Service (UMFUS). The Commission applied the UMFUS rules, including the
technical rules, to the 24 GHz band. The UMFUS rules specify that
emissions outside of a licensee's assigned frequency block must be
limited to -13 dBm/MHz. With respect to the passive systems operating
in the 23.6-24 GHz band, the Commission noted that ongoing
international studies include analyses to determine International
Mobile Telecommunications (IMT) out-of-band emission limits necessary
to protect passive sensors onboard weather satellites in that band, and
it acknowledged that the Commission's UMFUS rules might be revisited
once these international studies have been completed.
2. WRC-19 allocated 24.25-25.25 GHz to mobile (except aeronautical)
on a primary basis in Regions 1 and 2, globally identified the 24.25-
27.5 GHz band for IMT, and established limits of unwanted emissions
that apply to IMT in the 24.25-27.5 GHz band to protect Earth
Exploration-Satellite Service (EESS) passive systems in the 23.6-24.0
GHz band from harmful interference. To protect EESS passive systems,
WRC-19 modified a footnote to the International Table of Allocations to
specify that Resolution 750 (Rev. WRC-19) applies to the 24.25-27.5 GHz
band. Resolution 750 specifies unwanted emission limits as the amount
of power that may be radiated into any 200 megahertz of the 23.6-24.0
GHz passive band by IMT base stations and IMT mobile stations operating
in the 24.25-27.5 GHz band. Resolution 750 specifies unwanted emission
limits in terms of Total Radiated Power (TRP) that currently apply to
IMT stations and stricter emission limits that are effective for IMT
stations brought into use after September 1, 2027. These unwanted
emission limits are shown in Table 1.
Table 1--WRC-19 Resolution 750 Unwanted Emissions Permitted Within Any
200 Megahertz in the 23.6-24 GHz Passive Band
------------------------------------------------------------------------
Current TRP TRP limits after
Type of station limits Sept. 1, 2027
------------------------------------------------------------------------
IMT Base Stations........................ -33 dBW -39 dBW
IMT Mobile Stations...................... -29 dBW -35 dBW
------------------------------------------------------------------------
3. The WRC-19 Final Acts updated the ITU Radio Regulations,
including Resolution 750. The National Telecommunications and
Information Administration (NTIA), FCC, and the Department of State
share responsibility for implementing the WRC Final Acts in the United
States. The Commission has authority to implement the changes to the
Radio Regulations through its rulemaking proceedings. Given the
importance of limiting unwanted emissions into the passive 23.6-24.0
GHz band, OET and WTB seek to develop a record on implementing the
changes to the emission limit in Resolution 750 applicable to active
services in the 24 GHz band.
4. OET and WTB seek comment broadly on implementing certain of the
WRC-19 outcomes with respect to the 24.25-27.5 GHz band. Noting that
the United States is a signatory to the treaty text of the Radio
Regulations, OET and WTB seek comment on modifying the Commission's
rules in response to the unwanted emission limits and international
allocation table footnotes adopted for the 24.25-27.5 GHz band at the
WRC-19. These rule changes could include, for example, adding footnotes
to the United States Table of Frequency
[[Page 28523]]
Allocations or aligning the Commission's technical rules.
5. Appropriate out-of-band emission limits in the 24.25-27.5 GHz
band are important to protect passive sensing operations in the 23.6-
24.0 GHz band. The limits adopted at WRC-19 are to be measured within a
200-megahertz bandwidth within the 400-megahertz 23.6-24 GHz passive
band. For comparison with the Resolution 750 unwanted emission limit, a
signal at -13 dBm/MHz (conductive or TRP) would result in -20 dBW
within a 200-megahertz bandwidth. However, OET and WTB note that the -
13 dBm/MHz emission limit applies at the edge of the UMFUS band--i.e.,
24.25 GHz. Given this, OET and WTB seek to understand what level of
emissions can be expected within the 23.6-24 GHz band from UMFUS
transmitters, and whether and to what extent harmful interference to
passive systems operating in the 23.6-24.0 GHz band is expected to
occur from new 5G deployments at the current UMFUS limit.
6. Recognizing that the unwanted emission limits in Resolution 750
and the current out-of-band emission limits in the UMFUS rules are
specified differently, and further recognizing the two-phased approach
for the unwanted emissions limits that were adopted in WRC-19, OET and
WTB seek information on whether and how equipment intended for use
under the UMFUS rules in the 24.25-24.45 GHz and 24.75-25.25 GHz bands
can be designed to conform to the Resolution 750 limits--both the
current limits and the more restrictive limits that apply to new
equipment brought into use after September 1, 2027. Can licensees meet
the WRC-19 TRP limits by the relevant deadlines? Is it possible that
licensees can meet the -39 dBW limit for IMT base stations and the -35
dBW limit for IMT mobile stations prior to 2027? What steps, if any,
can the Commission take to help accelerate development and deployment
of equipment that complies with the post-2027 limits?
7. OET and WTB note that Resolution 750 specifies TRP as the only
means of meeting the required emission limits. Are there any
difficulties in performing over the air TRP measurements at such low
signal levels in the 24.25-24.45 GHz and 24.75-25.25 GHz bands?
Consistent with the current UMFUS rules, should a conductive power
methodology also be included as an alternative means for equipment
certification?
8. The UMFUS rules allow licensees flexibility as to the services
they will deploy and the architecture of their networks. Under these
rules licensees will be able to deploy mobile services. Licensees will
also have the freedom to implement point-to-point and point-to-
multipoint systems. The unwanted emission limits of Resolution 750
apply only to IMT base stations and mobile stations. The Commission's
rules do not define IMT and do not require that equipment complying
with a particular technical standard be used in a band licensed under
the UMFUS rules. If the Commission were to adopt the emission limits in
Resolution 750 for the 24.25-27.5 GHz band, how should it determine to
what stations these limits will apply? Should they only apply to
systems that meet the definition of IMT as specified by the ITU? Should
the rules apply to point-to-point and point-to-multipoint equipment
licensed under the UMFUS rules? Should any mobile UMFUS equipment be
required to comply with these unwanted emission limits regardless of
the technology used, the application, and the density of deployment?
Federal Communications Commission.
Ronald T. Repasi,
Acting Chief, Office of Engineering and Technology.
[FR Doc. 2021-10536 Filed 5-26-21; 8:45 am]
BILLING CODE 6712-01-P