In the United States, telecommunications companies AT&T Y Verizon they began to pause the construction of networks with fifth generation technology and even, in some cities they preferred not to turn on their already ready networks with 5G and whose range was close to the airports of that country, after the airlines accused that these wireless communications disturb the communication of commercial flights with land.
The airlines told the FAA authority that they could demonstrate that the takeoffs and landings of at least 799 commercial flights from different companies such as Emirates, Air India, ANA and Japan Airlines, and in several US cities would have been affected in some way in the month January for 5G communications.
These interferences would derive from the proximity that exists between the frequencies used to send and receive data from 5G and those that use radio altimeters and other aviation industry instruments that are essential to the safety of commercial flights in the air.
In U.S the incipient communications 5G travel through the frequency band from 3.7 to 3.98 GHz, while the communications of the airlines they use the bands between 4.2 and 4.4 GHz. The proximity between one and the other frequencies, and the powerful reception capacity that the equipment of both industries have is what could now confront two sectors that are essential for the US economy.
Manufacturers of radio communication equipment Ericsson, Huawei Y Nokia were consulted for this note, but were not immediately available to provide an opinion.
In Mexico there is a 600 MHz distance between the 5G bands and the aviation bands
The controversy in U.S has already been echoed in Mexico and now the question arises as to whether the 5G technology could have a negative impact on the around 1,100 commercial flights that, for example, daily take off and land at the Mexico City International Airport (AICM).
From the Federal Telecommunications Institute (IFT), the Mexican authority on the matter, any type of interference in technical terms is ruled out in the country.
Mexico has defined that some of the frequencies for exploitation in 5G are those located between the ranges of 3.3 and 3.6 GHz, while the aviation communications they also travel here between 4.2 and 4.4 GHz, and “in the middle” are satellite service communications, between 3.7 and 4.2 GHz.
In this way, the Mexican telecommunications authority allays the fears of those people who would have thought that the 5G networks compromise the safety of flights in the country.
Radio altimeters used in aeronautical services operate in the 4.2 to 4.4 GHz segment, and the proximity in frequencies of aeronautical operations with 5G has caused concern about possible harmful interference that could be caused to radio altimeters (…) In Mexico there are 600 MHz of separation in frequencies between both services, so there is no risk that the use of this band for mobile services in our country could affect aeronautical operations in any way, “explained the IFT.
“So far, there appears to be no evidence that 5G services in the 3.7 to 3.98 GHz could have any impact on aeronautical services (…) The technical rules for the use of this band that were issued by the Federal Communications Commission of the United States also considered measures to provide reasonable protection to aeronautical services of That country”.
The 5G technology can work with other frequency ranges, but that does not mean that the IFTIn the case of Mexico, it will privilege one or another industry, but rather, as a neutral authority, its function is to seek coexistence and harmonization in the exploitation of frequencies.
5G does not affect Mexican airports, because there is still no 5G in Mexico
In Mexico, the authority has foreseen that the spectrum of 600 MHz, 1.5 GHz and 3.5 GHz will be the ones that can be exploited most quickly in the 5G technologyalthough, again, the IFT insists that it is up to the companies to use their spectrum frequencies under the technology that makes the most sense for their business plans.
The most recognized companies among the Mexican consumer, such as AT&T, Telcel The Movistar, among other fixed or mobile services, have a diversity of frequencies that they could already exploit with 5G technology.
AT&T, for example, recently started a pilot to commercially test its 5G on a package of frequencies that it has in the band of 2.5 GHz.
Telcel, for its part, has begun to experiment with the sale of wireless fixed internet services for homes on its part of the 3.5 GHz band that it maintains nationwide.
None of these or other companies in the sector has officially stated that they already have networks of 5G covering Mexican airports, nor that they already operate a national network of 5G operating throughout the country.