What is the cause of the "5G storm" that caused the chaos in the sky of the United States? Sort out the reasons for the suspension and its course [Foreign Telegraph] | Tourism Voice (Tourism Industry News)

In the United States, global airlines cancelled some flights to the United States and affected domestic flights due to the launch of a new round of 5G services last week. Although there is no worst-case scenario in which air traffic stops altogether, why does this chaos happen? The Associated Press is telling the whole story and the whole story.

航空会社の関係者は、AT&Tとベライゾンがホワイトハウスからの圧力によって、多くの空港周辺で5G通信塔の運用を延期したことが、さらに混乱に拍車をかけたと非難している。

With this delay, the Federal Aviation Administration (FAA) has bought time to squeeze out aircraft that can operate freely in a 5G network environment. On January 20th, at the airport involved in the 5G communications environment, 78% of all aircraft owned by American airlines were allowed to land even with a poor field of vision.

In bad weather, there is a chance that about 1/5 of aircraft will not be able to land at some airports, but this is indeed less and less. CEO of American Airlines and United Airlines said in a statement that there will be no major chaos on flights in the future.

What's wrong?

携帯電話会社は数年前から次世代5Gサービスを展開しているが、最新のCバンドについては、より高速で安定したワイヤレスネットワークを確保することができることから、AT&Tとベライゾンは、T-Mobileと激しく競合していた。

Not only can 5G download videos such as movies faster, but it is also important for autopilot, the latest manufacturing processes, smart cities, telemedicine and other areas that rely on IoT.

The problem is that 5G works in the radio band close to the range used by radio altimeters that measure the height of aircraft on the ground. As early as 2020, a report by RTCA, an aviation research group, warned pilots and airlines about the possibility of wireless interference that could threaten safety. CTIA, a communications industry group, has challenged the report, retorting that 5G does not pose a risk to air transport.

Why do airlines ground flights to the United States?

As the 5G network became operational, global airlines cancelled some flights. Because companies are afraid that they may not be able to land at their destination under the 5G supervision determined by FAA.

What is the number of grounded flights?

According to the flight, more than 350 flights were grounded on January 19. This number sounds like a lot, but it actually accounts for only 2% of the original flights. In addition, it also includes those who are grounded for other reasons. It is worth mentioning that on January 3 this year, flights were grounded due to heavy snow and a new coronal infection among employees, which was 10 times higher than on January 19.

Our problem's solved?

In fact, the problem has not been solved. FAA announced that many altimeters are properly protected by C-band signal interference from 5G, but aircraft equipped with inappropriate altimeters may not be approved. In other words, airlines need to install new instruments if they want to land at all airports.

Is this just a problem for the United States?

In most cases, this is the case. FAA believes that the expansion of the 5G C-band is a problem for American airlines for several reasons. Compared with other countries, the 5G communication tower in the United States uses strong signal strength, and its antenna is installed upward at a high angle, so there may be interference to the aircraft radio altimeter. However, CITA makes sense to this FAA's claim.

In France, the 5G network near the airport must operate at low output power to avoid interference with aircraft.

Complete 5G networking in the United States?

It's not finished yet. AT&T and Belazon activated about 90 per cent of the 5G C-band towers, but agreed to control towers within a two-mile radius at many airports. The two companies hope to start running their communication towers as soon as possible, but may not be able to reach an agreement until FAA confirms that the airlines are safe.

What is the response of enterprises to this question?

AT&Tとベライゾンだけでなく、航空機製造のボーイングとエアバス、高度計メーカーのコリンズ、ハネウェル、タレスも対応に追われている。航空会社は、再びキャンセルが発生しないように、通信会社に圧力をかけている。

Whose side is the United States government on?

It can be said that no matter which side, it is to deal with it smoothly.

AT&T and Bellison won the C-band frequency bid for $80 billion (9.1 trillion yen). The Federal Communications Commission, which is in charge of the matter, has claimed that there is a safe buffer zone between the 5G and the aircraft altimeter, and FAA and Peter Boutijage, the transport minister, expressed their understanding of the airline's claim and asked the communications company to postpone operation.

Some experts pointed out that inadequate coordination and uncooperative attitudes among federal agencies have the same degree of responsibility as technical issues.

Why is there a crisis?

In theory, this crisis will not happen.

FAA and the airline had been discussing this issue for several years before the C band began to operate. The airline expressed concern, but said FAA ignored it. American airline CEO Doug Doug Parker expressed satisfaction with the solution but expressed dissatisfaction with the process, saying: "as a country, I don't think I can say I've had a lazy time."

The conversion of Japanese dollar to 114 yen is calculated by the travel voice editorial department.