Tag: AST SpaceMobile

AST SpaceMobile successfully tests cell-to-satellite calls transmitting video

9:37 am

According to press releases from both Verizon and AT&T on February 24, 2025, each has successfully tested cellphone-to-satellite video calls using the first set of satellites in AST SpaceMobile’s BlueBird satellite constellation. From ATT:

AT&T and AST SpaceMobile have successfully completed a video call by satellite over AT&T spectrum using the BlueBird satellites launched last September. These are the same satellites that will be used to start commercial service.

From Verizon:

Verizon and AST have yet again pushed the boundaries of what can be done with mobile devices by successfully trialing a live video call between two mobile devices with one connected via satellite and the other connected via Verizon’s terrestrial network connection.

The satellites will essentially act like cell towers in space, filling in all dead spots not reached by ground-based towers.

AST’s constellation is competing with Starlink, which has signed T-Mobile for its service. In addition, Eutelsat-Oneweb has just successfully tested using its satellite constellation for the same purpose.

I suspect that in time, when these satellite systems have been thoroughly tested and have become operational, they will allow these phone networks to begin decommissioning their cell towers on Earth, thus reducing their costs significantly and thus lowering the cost to their customers.

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Eutelsat-Oneweb uses its satellite constellations to test technology for phone-to-satellite capabilities

9:17 am

The communications company Eutelsat-Oneweb announced today that it has successfully tested the technology that would allow smartphones to use its satellite constellations as orbiting cell towers in order to eliminate dead zones in their ground-based systems.

Based on the press release, it is unclear whether the tests actually included a cell phone.

The trial used Eutelsat OneWeb satellites, with the MediaTek NR NTN test chipset, and NR NTN test gNB provided by ITRI, implementing the 3GPP Release 17 specifications. Sharp, Rhode & Schwarz provided the antenna array and test equipment and the LEO satellites, built by Airbus, carry transponders, with Ku-band service link, Ka-band feeder link, and adopt the “Earth-moving beams” concept. During the trial, the 5G user terminal successfully connected to the 5G core via the satellite link and exchanged traffic. [emphasis mine]

That user terminal might have been a smart phone, or it could have been an engineering test terminal.

Either way, Eutelsat-Oneweb appears to be aggressively trying to enter the competition for cell-to-satellite business, competing with the systems already operational from Starlink and AST SpaceMobile.

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AST SpaceMobile raises $400 million in capital

9:33 am

The direct-to-cell satellite company AST SpaceMobile has raised another $400 million in investment capital, giving it a total of $900 million in cash on hand for building its full constellation of its much larger second generation Bluebird satellites.

The operator now has more than $900 million of cash on its balance sheet to shift production of its Block 2 BlueBird satellites into a higher gear this year, after deploying five smaller Block 1 spacecraft to low Earth orbit (LEO) in September.

At about 223 square meters when fully deployed, a Block 2 satellite is significantly larger than Block 1, which spans 64 square meters, enabling 10 times the capacity to support up to 120 megabits per second (Mbps) peak data rates.

It has plans to launch 45 of these larger satellites in the next two years.

At the moment AST SpaceMobile and SpaceX are the only two companies offering direct-to-cell service. One component of SpaceX’s Starlink constellation has this capability, and the company has a deal with T-Mobile to use it to fill in gaps in its cell tower ground network. AST in turn has a deal with AT&T.

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AST SpaceMobile’s satellite-to-cell constellation gets its second contract

9:46 am

AST SpaceMobile, which is building a constellation of satellites that act as orbiting cell towers and can provide service where ground-based cell towers are unavailable, has now won its second contract, signing a 10-year deal with Vodafone, a European cell company which provides service there as well as across Africa and the Middle East.

AST’s first contract is with AT&T in the U.S. It already has five satellites in orbit, and plans to begin launching its second generation and larger BlueBird satellites next year, with the goal to begin service in the U.S. first.

All it needs really is an FCC license, which it has applied for but not yet received. Its main competitor, Starlink, has received its FCC license, so expect this red tape to evaporate relatively quickly, especially with the coming change in presidents.

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FCC approves use of Starlink for direct cell-to-satellite T-Mobile service

10:02 am

Despite objections from all of SpaceX’s competitors, the FCC has now approved the use of its Starlink constellation for direct cell-to-satellite service as part of T-Mobile’s cellular network.

The decision noted that many technical issues still must be cleared.

There are a few limitations on how this type of service (which the FCC calls “supplemental coverage from space,” or SCS) can work. Right now it officially has to operate as an extension of an existing terrestrial provider, in this case T-Mobile. That’s because the regulations on how you broadcast stuff in space are different from those for how you broadcast stuff to and from a phone (as opposed to a base station antenna). AT&T, for its part, is partnering with AST SpaceMobile.

SpaceX must also be sure that its service does not interfere with other services on the ground, while the ground services do not have to worry about whether they might interfere with the satellite signals.

Nonetheless, this approval likely means that soon users of T-Mobile (as well as AT&T) will no longer have any dead zones. When there are no cell towers available, their phones will simply access the orbiting constellations of either Starlink or AST SpaceMobile.

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AST Spacemobile signs multi-launch agreement with Blue Origin

9:24 am

The direct-to-cell satellite company AST Spacemobile announced yesterday that it has signed a multi-launch agreement with Blue Origin to use its New Glenn orbital rocket to place approximately sixty of its second generation BlueBird satellites into orbit in the 2025-2026 time frame.

The next-generation Block 2 BlueBirds are designed to deliver up to 10 times the bandwidth capacity of the BlueBird satellites in orbit today, accelerating the goal to achieve 24/7 continuous cellular broadband service coverage. The service will target approximately 100% U.S. nationwide coverage from space with over 5,600 coverage cells, with beams designed to support a capacity of up to 40 MHz, enabling peak data transmission speeds up to 120 Mbps, supporting voice, full data and video applications. The Block 2 BlueBirds, featuring up to 2,400 square foot communications arrays, will be the largest ever commercially deployed in low Earth orbit once launched, surpassing the current record held by AST SpaceMobile’s BlueBird 1-5 and BlueWalker 3, each ~700 square feet in size.

The Block 2 BlueBirds are designed to be compatible with all major launch vehicles. Blue Origin’s launch vehicle, the New Glenn, offers a seven-meter fairing enabling twice the payload volume of five-meter class commercial launch systems, and is well-suited to launching up to 8 of the largest-ever Block 2 BlueBirds.

According to this, the contract is for approximately 7 to 8 New Glenn launches. It also notes the large capacity of New Glenn apparently gives it an advantage over the rockets available from both SpaceX and ULA. If (the operative word) Blue Origin can finally get this rocket off the ground soon, it will then finally provide some real competition to SpaceX.

We shall see. New Glenn is five years behind schedule, and all signs suggest the company continues to move at a relatively slow pace compared to its competitors. It has said it wants to do the first New Glenn launch before the end of the year, but that remains uncertain.

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Successful deployment of large array antennas on all five AST’s satellites

12:48 pm

AST SpaceMobile has now successfully unfolded the large array antennas on all five the satellites it launched in September, and did so six weeks ahead of schedule.

“The unfolding of the first five commercial satellites is a significant milestone for the company. These five satellites are the largest commercial communications arrays ever launched in low Earth orbit,” commented Abel Avellan, founder, Chairman and CEO of AST SpaceMobile, in a statement. “It is a significant achievement to commission these satellites, and we are now accelerating our path to commercial activity.”

The satellites are designed to act like cell towers in space, providing direct satellite-to-cellphone coverage and fill gaps in ground-based cell service. ATT has already signed a contract with AST to use these satellites.

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AST SpaceMobile makes deal with ATT to use its cell-to-satellite constellation

11:59 am

AST SpaceMobile, which launched in 2022 its first satellite for direct cellphone-to-satellite communications and has been successfully testing it since, has now signed a deal with ATT, which wants to use the company’s planned constellation of five such satellites, scheduled for launch this summer.

Nor is this the only satellite company launching such satellites. SpaceX has already launched several dozen Starlink satellites adapted for direct cell-to-satellite service. In addition, it appears that all the companies making smart phones are adding features to their phones that would allow this capability in the future.

Once operational, these satellites will act as orbiting cell towers, and will thus eliminate most of the dead zones in all the populated regions on Earth.

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