Open-source cellular networking is moving beyond towers and toward space.

The Linux Foundation announced OCUDU 26.10 on October 8, adding support for 5G non-terrestrial networks (NTN)—the technology that helps cellular systems communicate through satellites.

It does not mean any phone can suddenly connect to any satellite. It means developers now have more of the open software needed to build and test satellite-capable 5G infrastructure. The Linux Foundation’s release announcement describes support for 3GPP Release 17 NTN.

What changed?

Alongside satellite connectivity, OCUDU adds 8T8R MIMO, enhanced beamforming, additional O-RAN split options, positioning features, and security improvements. In plain English: better ways for open network software to coordinate radios, handle multiple antennas, and reduce delays.

OCUDU focuses on the central and distributed units of a radio access network—the software between a cell site’s radios and the wider mobile network. It is infrastructure for builders, not a consumer satellite-phone app.

Why open source matters

Cell networks have traditionally relied on tightly integrated vendor systems. Open RAN aims to make parts of that stack more interchangeable and easier to test. A shared codebase can let universities, carriers, equipment makers, and independent developers experiment without recreating every component from scratch.

That builds on the same open-development ideas we explained in our open-source software guide and Git and GitHub explainer.

What comes next?

OCUDU’s developers are meeting October 20–22 near Washington, D.C., to discuss implementation and testing. The release also adds continuous fuzz testing and DTLS signaling encryption. Those improvements matter because experimental telecom software still needs serious reliability and security work before production deployment.

SmartNews takeaway: The exciting part is not that 5G satellites are new. It is that more of the software for building and testing those networks is becoming openly available.

Editor’s Note: OCUDU 26.10 is a software release, not an announcement of new satellite coverage or guaranteed device compatibility.