AT&T and Verizon Wireless have agreed to take additional measures to prove to the US Federal Aviation Administration (FAA) that 5G that uses C-band frequencies does not interfere with aircraft equipment.
Mid-range C-band 5G spectrum provides a compromise between these two desirable outcomes and will be an important resource in the rollout of 5G.
5G networks will use a more diverse range of spectrum than previous generation mobile technology, with low-band frequencies such as 700MHz offering wider coverage, and high-band millimeter wave (mmWave), which provides greater capability over short distances. Is.
AT&T and Verizon, along with T-Mobile and US Wireless, won licenses for C-band airwaves located between 3.7GHz and 3.98GHz in an auction earlier this year that raised $80 billion.
However, the FAA fears that 5G services using this spectrum could affect sensitive aviation electronics such as altimeters that rely on frequencies located between 4.2GHz and 4.4GHz.
Mobile operators and industry bodies say there is no credible evidence of interference, noting that other countries have deployed C-band 5G without problems and that there is a substantial spectrum gap between the bandwidth allocated to mobile and aviation. Is. Others have questioned why the FAA waited so long before expressing concern.
The first tranche of C-band spectrum allocated during the auction was to be released to the winning bidders next month, but AT&T and Verizon agreed to delay the launch of C-band 5G services by a month, while more research was done.
Now operators have also agreed to take additional steps to reduce the power coming from 5G base stations for six months, especially around airports and heliports. He says the commitments will expire on July 6 next year, unless credible evidence comes to the fore demonstrating interference during that period.
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