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US construction of civil emergency communication system using black SIM card

via:cnBeta.COM     time:2019/5/24 23:31:34     readed:144

FirstNet is a mobile network that uses Band 14, which is the US to digital starting in 2009.TVA 700 MHz spectrum fragment recovered from UHF television broadcasting during the transition. FirstNet's Band 14 spectrum is located in the middle and high frequency range of 700 MHz radio waves. In 2017, US officials sought to convert the spectrum into an emergency communications network. AT&T won a 25-year contract, and all 50 US states, Washington, DC, and the five major US overseas leaders signed documents to support FirstNet.

The US Congress injected $6.5 billion into the project to help pay for the Band 14 radio and network core equipment. AT&T estimates that FirstNet will be completed in half by 2019. FirstNet is not only used for emergency communications, but when used in light emergency situations, regular mobile traffic can also be routed through FirstNet's Band 14, but emergency calls and data take precedence over any other situation, including the ability to use during peak hours during emergencies. Preempt or block consumer traffic.

FirstNet is also able to withstand catastrophic events that disrupt mobile networks. A fleet of 70 light trucks is rapidly deployed nationwide, extracting Internet access from satellite resources and converting it to terrestrial 4G LTE. Three FirstNet drones can be used to do the same thing even if the truck is not accessible. At the heart of all this is the almost fabulous black SIM card that allows devices to enter FirstNet. The SIM card can be designed for emergency respondersMobile phoneUsed in, or compatible with Band 14 700 MHziPhoneUsed with Galaxy phones.


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