초록 ▼

A direct-access satellite telecommunications system employs one or more telecommunications satellites in geosynchronous orbit. Small, low-cost user terminals are located at the user's premises and permit two-way telecommunications via user links. Access links provide satellite telecommunications to

A direct-access satellite telecommunications system employs one or more telecommunications satellites in geosynchronous orbit. Small, low-cost user terminals are located at the user's premises and permit two-way telecommunications via user links. Access links provide satellite telecommunications to larger gateway stations as well as a network control center. Gateway stations store user information and provide connection to terrestrial telecommunications networks. In operation, the network control center allocates satellite bandwidth and power to setup the access and user links, with a minority of the satellite's power being allocated to the access links, and a majority of the power being available for the user links.

대표청구항 ▼

[ We claim:] [1.] A satellite-based telecommunications system comprising:a satellite in geosynchronous orbit providing satellite coverage over a geographical region;a plurality of user terminals located in the geographical region, each having a relatively small antenna that permits two-way telecommu

[ We claim:] [1.] A satellite-based telecommunications system comprising:a satellite in geosynchronous orbit providing satellite coverage over a geographical region;a plurality of user terminals located in the geographical region, each having a relatively small antenna that permits two-way telecommunications with the satellite via user links;a gateway station located in the geographical region coupled to a terrestrial telecommunications network, the gateway station having a relatively large antenna that permits two-way telecommunications with the satellite via access links;a network control center (NCC) that controls the satellite, the NCC having a relatively large antenna, bandwidth and power of the satellite being allocated by the NCC such that a majority of the satellite's power is used to provide the user links, and a minority of the satellite's power is used to provide the access links.