Satellite operators attempting direct-to-cell voice and data transmission are encountering regulatory hurdles and spectral efficiency limits that complicate commercial deployment.
Spectrum Coexistence Challenges
Terrestrial mobile network operators are raising concerns over potential out-of-band interference caused by satellite-based transmissions using existing cellular spectrum. Regulatory bodies are demanding stricter power flux density thresholds.
Bandwidth and Service Limitations
Initial deployments are restricted to low-bandwidth text messaging and emergency calls. Achieving continuous broadband throughput will require next-generation phased array constellations and expanded orbital launch availability.