Direct-to-Cell Delivers Satellite LTE Via LEOs
TL;DR. A new white paper describes direct-to-cell technology, placing LTE base stations on low Earth orbit satellites to connect unmodified legacy devices. - DTC uses phased array antennas on LEO satellites from 340 km to 570 km altitude. - It addresses Doppler shift and round-trip time challenges for existing phones. - Spectrum sharing and regulatory frameworks like FCC SCS enable these services. - DTC serves as an interim solution toward 5G NTN and 6G unified network architecture.
- Direct-to-cell (DTC) technology uses LEO satellites to provide LTE connectivity to existing mobile devices without hardware or software changes.
- Satellites act as spaceborne cell towers, utilizing phased array antennas to deliver narrow beams and compensate for physical layer challenges.
- Regulatory frameworks and spectrum sharing are critical for enabling DTC services.
- DTC is an interim step envisioned to precede full 5G Non-Terrestrial Network (NTN) and 6G capabilities.
Sources
- Direct-to-Cell Technology: Enabling Satellite Connectivity for Legacy Devices — content.knowledgehub.wiley.com