Warring U.S. government agencies continue to debate whether expanded
fifth generation wireless service will interfere with aviation altitude
measurements, years after the parties should have resolved this mission
critical issue. See, e.g., FAA Statements on 5G (Jan. 28, 2022); https://www.faa.gov/newsroom/faa-statements-5g;
Carr Statement on Biden Administration’s Failure of Leadership on 5G (Jan. 18,
2022); https://www.fcc.gov/document/carr-statement-biden-5g-delay.
In preparation for a 2019 global spectrum planning conference
convened by the International Telecommunication Union, a specialized agency of
the United Nations, the Federal Communications Commission, and even the President’s
Executive Branch telecommunications advisory agency, summarily dismissed 5G
altimeter interference concerns raised by the Federal Aviation Administration. See
Letter from Steve Dickson, Administrator, Federal Aviation Administration, to Adam
Candeub, Deputy Assistant Secretary of Commerce for Communications and
Information, Performing the Delegated Duties of the Assistant Secretary of
Commerce for Communications and Information National Telecommunications and Information
Policy, (Dec. 1, 2020); https://www.faa.gov/sites/faa.gov/files/2021-10/DOT_Letter_to_NTIA_FCC3.7_GHz_Band_Auction.pdf;
John Hendel, How Washington flew into a 5G mess, POLITICO (Jan. 19,
2022); https://www.politico.com/news/2022/01/19/5g-flights-spectrum-mess-washington-527425.
Critical interference analysis should have continued, but it
appears that the rejecting agencies expected the FAA to accept defeat and consider
the matter closed. Predictably, the FAA did
not “speak now and forever hold your peace.” It now has powerfully alarmed the court of
public opinion with worst case scenarios of severe interference between 5G service
and airline altimeter readings. See, e.g., Tom Wheeler, Did the FAA
cry wolf on 5G?, TECHTANK, The Brookings Inst. (Jan. 21, 2022); https://www.brookings.edu/blog/techtank/2022/01/21/did-the-faa-cry-wolf-on-5g/;
Stephen Gandel, How 5G Clashed With an Aviation Device Invented in the 1920s,
THE NEW YORK TIMES (Jan. 19, 2022); https://www.nytimes.com/2022/01/19/business/5g-radio-altimeters-airlines.html;
Andrew Ross Sorkin, Jason Karaian, Sarah Kessler, Stephen Gandel, Michael J. de
la Merced, Lauren Hirsch and Ephrat Livni, Why Airlines Are Worried About 5G,
THE NEW YORK TIMES (Jan. 20, 2022).
A serious matter,
which could have been resolved through fair-minded technical assessment of interference
potential and accommodation of cross cutting interests, now triggers FAA claims
of calamity. In the interim, the FCC auctioned
off the newly reallocated 5G spectrum generating over $81 billion dollars for
the U.S. treasury, (FCC Announces Winning Bidders in C-band Auction,
(Feb. 24, 2021); https://www.fcc.gov/document/fcc-announces-winning-bidders-c-band-auction)
with as much as $14.7 billion flowing to incumbent users of the C-Band
satellite spectrum to defray their relocation costs. See, FCC, Expanding Flexible Use of the
3.7 to 4.2 GHz Band, GN Docket No. 18-122, Report and Order and Order of
Proposed Modification, 35 FCC Rcd. 2343
(2020); Caleb Henry, FCC sets December C-band auction, offers up to $14.7
billion for satellite operators, SPACE NEWS (Feb. 6, 2020);
How Could This Happen?
For decades, the nations of the world have relied on an
intergovernmental process designed to build trust and harmonize the use of radio
spectrum and the orbits used by satellites. The ITU, has earned a reputation for lending its “good
offices” to reach a global consensus, albeit one that can take years to
complete. Interference-free frequency
allocations and uniform procedure for registering the orbital location of
satellites enhance consumer welfare by promoting efficiency, shared access to
global resources, and economies of scale. For example, a consensus on which
frequencies to use for wireless services has made it possible for equipment
manufacturers to offer single handsets useable in most places. https://spacenews.com/fcc-sets-december-c-band-auction-offers-up-to-14-7-billion-for-satellite-operators/.
The ITU
achieves consensus by adhering to a lengthy process requiring thorough study,
ventilation of viewpoints, and trust building with an eye toward anticipating, avoiding,
and resolving conflicts. Because the
process often reaches “consensus by exhaustion,” some national governments and
commercial stakeholders have become increasingly dissatisfied with the pace and
outcomes of conference deliberations. The
prospect for early market entry, global wireless leadership, and billions of
dollars in auction proceeds encouraged the FCC and the Executive Branch to fast
forward 5G frequency allocations with little concern about potential harm to
the ITU planning process and inadequate assessment of altimeter interference
potential, even after financing the departure of incumbent users.
Government Agency Squabbling
Compounding problems with the ITU process, the United States government
failed to resolve all interagency disputes before the 2019 ITU World Radio Conference. The parties had plenty of time to work
through their disputes and reach a consensus on spectrum planning initiatives
at the ITU. Instead, the FAA persists, perhaps
combining a heartfelt concern for aviation safety with the desire to remedy the
sting of not having had its concerns adequately considered by other government
agencies having more apparent expertise, clout, and the ability to generate
billions for the national treasury.
Reaching closure on a single set of initiatives for ITU
spectrum planning conferences will become more difficult for many nations as
the nature and type of interested parties grows. Representatives of ventures using new spectrum-intensive
technologies, such as autonomous vehicles, finance, artificial intelligence,
and the Internet of Things, will need more bandwidth. While most applications require short
distance transmissions and can tolerate multiple uses of the same frequencies,
the massive increase in demand can result in congestion and in turn demands for
exclusive assignments to foreclose even the possibility of interference.
FCC did anticipate the need to separate commercial 5G
services from nearby incumbent altitude monitoring by aircraft. Despite an FCC-mandated guard band of 220
Megahertz, separating the two types of
services the FAA vigorously asserted that the potential for harmful
interference would persist, particularly during critical aircraft takeoffs and
landings at airports (see Robert D. Atkinson, C-Band Spectrum Rollout for 5G
and Aviation Altimeters, ITIF INNOVATION FILES (Nov. 9, 2021); https://itif.org/publications/2021/11/09/c-band-spectrum-rollout-5g-and-aviation-altimeters.
The FCC and FAA should recognize that they have limited time
available to avert greater harm to the national interest in both access to the
latest innovations in wireless broadband and aviation safety. Had the FCC
worked with the FAA to assess the actual potential for interference, despite
ample separation of frequencies used, wireless consumers would already have access
to a sizeable block of spectrum ideal for ultrawideband service.