HIGH SPEED, HIGH TERRESTRIAL DENSITY GLOBAL PACKET DATA MOBILE SATELLITE SYSTEM ARCHITECTURES

摘要

A satellite communications system comprises multiple satellites (e.g., a combination of LEO/MEO/GEO satellites). Multiple satellite gateways communicate over channels of the satellites with remote mobile user terminals. The mobile user terminals communicate with the satellite gateways via associated satellite terminals that interface with the satellites, or directly with the satellites. Each mobile user terminal of a first group communicates with a satellite gateway, over satellite channels, via an associated satellite terminal. Each mobile user terminal of a second group (e.g., in a remote rural area) communicates with a satellite gateway directly over satellite channels. The mobile user terminals of the first communicate with the satellite terminals locally via S-band. The mobile user terminals of the second group communicate directly over the satellite channels via Ku band or Ka Band. Each of the satellite gateways communicates over satellite channels via Ka band, Ku band, V-band or L-band.