SpaceX has chosen Qualcomm to supply the radio hardware for Starlink Mobile, its planned terrestrial 5G network in the United States, in a move that takes the satellite company firmly onto the ground. Qualcomm announced the multi-year agreement on 4 November, saying its Dragonwing cellular infrastructure platforms will power Starlink Mobile base stations across the country.

The deal covers the Dragonwing QRU100 and QDU100 platforms, together with commercial-grade Layer 1 software. The QRU100 provides the radio-unit processing behind the network's Massive MIMO antennas, while the QDU100 handles the distributed-unit work that turns radio signals into data. Qualcomm said the combination is designed to improve performance per watt, a practical concern when a network is built at national scale.

Starlink Mobile's terrestrial sites will use Massive MIMO radio units with 64 transmit and 64 receive paths, known as 64T64R. The design uses many antenna elements to form narrow beams aimed at individual users, rather than flooding a whole sector with one broad signal. In principle, that improves both coverage and capacity, allowing one site to serve more users at the same time. Qualcomm has not published benchmarks for the configuration, so the scale of that gain in the field remains to be tested.

Deployment is scheduled to begin in 2027, with tens of thousands of sites rolled out over the course of the multi-year agreement. Neither company has given an exact site count, a date when customers will be able to sign up, or any pricing. The financial terms of the agreement have also not been disclosed, so the value of the deal to Qualcomm cannot yet be sized from the announcement alone.

The split of responsibilities is one of the more telling details. Qualcomm will supply the Layer 1 software, the physical-layer code that handles modulation, coding and beamforming. SpaceX will write the layers above it, controlling scheduling, data flow, signalling and mobility, including how a phone hands off between a ground cell and a satellite link. That gives SpaceX control over how the network behaves, without having to build the hardest signal-processing code from scratch.

Durga Malladi, Qualcomm's executive vice president and general manager for technology planning, edge solutions and data centre, said: "Building a nationwide network demands high performance and power efficiency at every site." He added that the two companies were building world-leading cellular infrastructure in the United States, with an opportunity to lay the foundation for AI-native 6G in the years ahead.

Michael Nicolls, senior vice president of Starlink, said the company was building the first fully integrated nationwide satellite and terrestrial network, aimed at keeping people connected wherever they are. He said Starlink was excited to work with Qualcomm and use its industry expertise to speed up development of its base station architecture.

The ground network fills a gap that satellites alone cannot close. Starlink's satellites reach remote areas, but they struggle with indoor coverage, dense cities and the sheer capacity demanded by millions of simultaneous phone users. Ground sites are designed to carry the heavy urban load, while satellites cover the places towers cannot reach. A hybrid network of the two could, in theory, hand a phone seamlessly between a tower and a satellite as coverage changes.

For Qualcomm, the agreement is a visible win in infrastructure, a market where it has historically been far less prominent than in handset chips. A named customer planning tens of thousands of sites gives its Dragonwing line a reference deployment, which other carriers weigh heavily when choosing suppliers. For the established network vendors, the signal is less comfortable: a new entrant is buying only radio hardware and physical-layer code, and writing the rest of the network software itself.

There is still much that is unknown. Building tens of thousands of sites is a logistics problem as much as a technology one, with each site needing a lease, power, backhaul, permits and a crew. The announcement says nothing about how SpaceX will acquire or build the sites, and no customer launch date has been set. For now, the news is about a supplier choice for a network that has yet to be built, rather than a service people can buy.