FCC explores unlicensed spectrum for satellite direct-to-device

Today's concept: Direct-to-device (D2D) communication

Direct-to-device (D2D) communication is a capability that allows standard consumer equipment, such as everyday smartphones, to connect directly to satellites or nearby hardware without requiring specialized satellite dishes or dedicated ground terminals.

Direct-to-device communication relies on satellite constellations acting as flying cellular base stations—an approach known as non-terrestrial networks—to transmit radio signals directly to ground hardware.

Traditionally, cellular networks rely on physical towers built on the ground. When a user travels outside the coverage area of these towers—such as in remote wilderness, across open oceans, or during natural disasters when local power and equipment fail—they lose connectivity entirely. Building ground towers in these remote or hazardous locations is often geographically impossible or financially unfeasible.

D2D solves this problem by using satellites in low-Earth orbit as airborne cell towers. Instead of routing a signal to a nearby roadside tower, a standard device sends its radio signal straight up into space. This provides seamless coverage across gaps in terrestrial networks, ensuring continuous connectivity for emergency response, remote military operations, and secure logistics anywhere on Earth.

To understand D2D, imagine driving through a remote desert where there are no roadside gas stations. Instead of building permanent fueling stations along hundreds of miles of empty road, a specialized tanker aircraft flies overhead to refuel your car on the move. D2D similarly delivers wireless connectivity straight from orbit to your device, bypassing the need for fixed infrastructure on the ground.

For research and development strategy, D2D represents a critical shift toward integrated satellite-terrestrial networks, fundamentally changing how spectrum is allocated and how resilient communications are designed for national security.

What happened

US-led 6G coalition faces execution and supply chain hurdles The National Telecommunications and Information Administration (NTIA) launched a 25-country coalition to champion secure, open 6G standards, but the group notably excludes key manufacturing nations like India, Vietnam, and Taiwan. For your program planning, this highlights that political consensus alone will not secure the hardware supply chain or guarantee dominance in international technical standards bodies like the 3rd Generation Partnership Project (3GPP). Light Reading is an independent telecom trade publication providing market analysis. Light Reading https://www.lightreading.com/6g/new-us-6g-alliance-must-show-it-can-make-a-difference

FCC opens proceeding to explore unlicensed spectrum for satellite direct-to-device links The Federal Communications Commission (FCC) voted to launch a formal proceeding examining how unlicensed radio spectrum can be used for satellite-based direct-to-device (D2D) communications. This regulatory action directly impacts your office's testbed planning and spectrum strategy, as official policy rules will dictate which frequency bands can be used for space-based operational concepts. Light Reading is a trade news outlet reporting on regulatory policy. Light Reading https://www.lightreading.com/satellite/fcc-opens-proceeding-on-unlicensed-spectrum-for-d2d

Fixed wireless industry group pushes back on FCC satellite spectrum proposals The Wireless Internet Service Providers Association (WISPA) requested that the FCC revise its proposed rulemaking on unlicensed spectrum for D2D use, claiming the agency's technical assumptions are unsupported by historical evidence. This dispute signals potential regulatory delays and spectrum interference challenges that your office must factor into future test and evaluation timelines for satellite-terrestrial spectrum sharing. WISPA holds a commercial position representing terrestrial internet service providers competing for access to these frequency bands. Light Reading https://www.lightreading.com/satellite/wispa-warns-fcc-of-unsupported-conclusions-in-d2d-proceeding

SpaceX outlines terrestrial small-cell network to complement satellite D2D service SpaceX announced plans to build a ground-based small-cell network that integrates directly with its satellite D2D service to compete against established commercial cellular operators. Tracking this integration helps your office evaluate where commercial industry is making real capital investments in hybrid space-ground architectures versus marketing claims. RCR Wireless is a commercial telecommunications trade publication. RCR Wireless https://www.rcrwireless.com/20260805/carriers/spacex-targets-us-carriers-small-cells-physical-ai

AT&T deploys low-band spectrum with Ericsson hardware to boost signal performance AT&T is deploying dual-band radios from Ericsson using newly acquired 600-megahertz (MHz) low-band spectrum designed to improve coverage and uplink performance. This operational buildout provides a real-world baseline for your office's test and evaluation metrics regarding low-band radio performance and hardware signal strength. Light Reading is an industry trade press publication. Light Reading https://www.lightreading.com/5g/at-t-puts-600mhz-to-work-with-ericsson-for-coverage-and-uplink

Worth watching

Watch for international coordination efforts leading into 3GPP Release 21, which will contain the first formal specifications for 6G technology and is scheduled to freeze in March 2029. In the near term, track public comment filings from the FCC's D2D unlicensed spectrum proceeding, as industry feedback will shape official US technical positions ahead of upcoming International Telecommunication Union Radiocommunication Sector (ITU-R) IMT-2030 standardization milestones.