Two World Radiocommunication Conference 2027 agenda items examine different ways satellites could communicate with ordinary mobile devices. One concerns using terrestrial mobile spectrum for satellite connections. The other concerns additional spectrum allocations for mobile-satellite services.
In an October 28 policy paper, Information Technology and Innovation Foundation authors Joe Kane and Ellis Scherer recommend that the United States support both approaches. Their recommendation is a policy position, not an international spectrum decision.
Two Different Spectrum Approaches
The terrestrial-spectrum approach would allow satellite links to supplement mobile networks using frequencies associated with terrestrial mobile service. A satellite connection could extend service beyond the reach of a ground network, subject to the applicable technical and regulatory conditions.
This approach creates a coordination problem because frequencies used by ground networks can also be received across national borders. Satellite transmissions cover large areas, making protection of existing services part of the international study.
Agenda item 1.13 addresses this subject through ITU Resolution 253. The studies support consideration at WRC-27; they do not themselves authorize commercial operations.
The second approach uses spectrum allocated to mobile-satellite services. These allocations establish a satellite-service basis for the connection instead of relying on a satellite extension of terrestrial mobile spectrum.
Frequencies Under Consideration
Agenda item 1.14 and ITU Resolution 254 address possible additional mobile-satellite allocations. The bands under study include 2010–2025 MHz for Earth-to-space transmissions and 2160–2170 MHz for space-to-Earth transmissions in Regions 1 and 3. The 2120–2160 MHz band is under consideration for space-to-Earth service in all three ITU regions.
An Earth-to-space transmission travels from a device or ground terminal to a satellite. A space-to-Earth transmission travels in the opposite direction. The regional distinctions matter because international allocations do not necessarily apply identically everywhere.
ITIF’s support for both approaches would preserve two regulatory routes to satellite connectivity. The paper advocates that position; it does not establish that either route has received the international permissions under discussion.
The United States already has a domestic framework for supplemental coverage from space. New Space Economy’s explanation describes that framework. Domestic authorization and international allocation decisions operate at different levels: WRC-27 will consider the international rules and allocations addressed by its agenda.
Useful Books Available on Amazon
