iTWire - AST SpaceMobile claims first space-based voice call using standard smar...
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Wednesday, 26 April 2023 19:57
AST SpaceMobile claims first space-based voice call using standard smartphones Featured
By Josh Martinez
American satellite maker AST SpaceMobile has announced the successful completion of claimed first-ever two-way voice calls, directly to standard unmodified smartphones using its BlueWalker 3 (BW3) satellite.
According to AST, this is the first time anyone has ever achieved a direct voice connection from space to everyday cellular devices, the company says enhances its mission to provide connectivity to the nearly 50% of the global population who remain unconnected from cellular broadband.
The first voice call was made from AST's home base in the Midland, Texas area to Rakuten in Japan over AT&T spectrum using a Samsung Galaxy S22 smartphone.
AST says the calls demonstrated the power of its BW3 satellite, which at 64 square metres in size is the largest-ever commercial communications array deployed in low Earth orbit and is an important step to providing space-based 2G, 3G, 4G LTE and 5G cellular broadband globally.
Engineers from Vodafone, Rakuten and AT&T participated in the preparation and testing of the first voice calls with BW3.
“Achieving what many once considered impossible, we have reached the most significant milestone to date in our quest to deliver global cellular broadband from space,” said Abel Avellan, Chairman and Chief Executive Officer of AST SpaceMobile.
"While we take a moment to celebrate this tremendous accomplishment, we remain focused on the path ahead and pivotal next steps that get us closer to our goal of transforming the way the world connects.”
“Today, we have taken another major step in mobile communications. 30 years after Vodafone sent the world’s first text message, we supported AST SpaceMobile in successfully making the first ever direct-to-smartphone test call using satellite communications," said Margherita Della Valle, Vodafone Group Chief Executive.
"As a lead investor in AST SpaceMobile, we will continue to break technological boundaries by connecting many more millions of people across the planet when the service becomes commercially available.”
“It was a unique thrill and honour to have the Rakuten team talk with Abel in a world-first direct-to-satellite experience," said Mickey Mikitani, Rakuten Chairman & CEO.
"As technological advancements like space connectivity become possible with pioneers like AST SpaceMobile, Rakuten will also progress even further along the road to democratising connectivity for all.”
“We connect people to greater possibility, and this important milestone with AST SpaceMobile is a big step and we can’t wait to see what’s next in our space-based journey,” said Chris Sambar, Head of AT&T Network.
In addition to test calls, AST SpaceMobile engineers conducted initial compatibility tests on a variety of smartphones and devices.
According to AST, the phones successfully exchanged SIM and network information directly to BW3 — crucial for delivering broadband connectivity from space to any phone or device.
Additional testing and measurements on the smartphone uplink and downlink signal strength confirm the ability to support cellular broadband speeds and 4G LTE / 5G waveforms, AST says.
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