Satellite-based direct access telecommunications systems
First 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.
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Accused Products
Abstract
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.
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Citations
22 Claims
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1. A satellite-based telecommunications system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for providing direct-to-premises telecommunications services comprising:
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one or more telecommunication satellites in geosynchronous orbit that provide two-way radio frequency communication links, comprising access and user links, over a geographical region; a plurality of gateway stations, at least one of which is connected to a terrestrial telecommunications network, the gateway stations having access to a database that stores user information, a gateway station communicating through the satellites via access links at X-Band radio frequencies; a plurality of user terminals, each of which is located at a user premises, the user terminals communicating through the satellites via user links at Extended C-Band frequencies; a network control center (NCC) that controls the satellites, wherein a service request from either a user within the system or a terminal within the terrestrial telecommunications network causes the NCC to allocate bandwidth and power of a satellite to establish the access and user links. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification