Communications system and method employing forward satellite links using multiple simultaneous data rates
First Claim
1. A communication system comprising:
- a central control subsystem;
a space-based subsystem for receiving data from the central control subsystem and transmitting the data on a selected one of a plurality of transmitters to a receiving station such that said data is transmitted at a desired data rate determined by said central control subsystem;
a plurality of receivers located at said receiving station for receiving said data, said receiving station using a selected one of said receivers that is configured to receive information at said desired data rate to receive said data being transmitted from said space-based subsystem; and
wherein said central control subsystem transmits said data to said space-based subsystem data at a selected one of said data rates based on a monitored condition for said receiving station.
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Accused Products
Abstract
A communication system and method for transmitting data to mobile platforms using multiple simultaneous channels operating at multiple data rates. Each mobile receiver has the capability to receive multiple transmit channels at multiple data rates. Mobile platforms report their position to a ground based controller which determines which communication channel can be operated without substantial loss of data. Data packets destined for each aircraft are preferably routed to the highest data rate channel that can be received by that mobile platform without substantial loss of data. This maximizes the overall system efficiency and throughput. High priority and mission critical data may be transmitted to the aircraft using low data rate channels to increase link availability.
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Citations
25 Claims
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1. A communication system comprising:
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a central control subsystem;
a space-based subsystem for receiving data from the central control subsystem and transmitting the data on a selected one of a plurality of transmitters to a receiving station such that said data is transmitted at a desired data rate determined by said central control subsystem;
a plurality of receivers located at said receiving station for receiving said data, said receiving station using a selected one of said receivers that is configured to receive information at said desired data rate to receive said data being transmitted from said space-based subsystem; and
wherein said central control subsystem transmits said data to said space-based subsystem data at a selected one of said data rates based on a monitored condition for said receiving station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A communication system comprising:
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a control subsystem transmitting data at a selected one of a plurality of different data rates;
a space-based subsystem for receiving data from the control subsystem and transmitting the data on a selected one of a plurality of transmitters to a receiving station operating within a coverage region such that said data is transmitted at a selected data rate;
a receiver subsystem located at said receiving station for receiving said data transmitted from said space-based subsystem; and
wherein said control subsystem selects a particular one of said data rates to use for transmission of said data such that a maximum data rate is used that is able to maintain closure of a communications link with said receiving station. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A communications system comprising:
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a central control station for transmitting data at a plurality of different data rates;
a space-based transponder for receiving said data and transmitting said data at a data rate selected by said central control station;
a mobile platform operating within a designated coverage region being served by said space-based transponder, said mobile platform including a receiving subsystem for receiving data from said space-based transponder at a data rate selected by said central control station; and
wherein said central control station selects a data rate for use based on whether said data is defined as relating to mobile platform operation or not. - View Dependent Claims (18, 19)
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20. A communications system comprising:
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a central control station for transmitting data at a plurality of different data rates;
a space-based transponder for receiving said data and transmitting said data at a data rate selected by said central control station;
a mobile platform operating within a designated coverage region being served by said space-based transponder, and traveling between a plurality of subregions within said coverage region;
said mobile platform including a receiving subsystem for receiving data from said space-based transponder at a data rate selected by said central control station; and
wherein said central control station monitors, in real time, a location of said mobile platform and selects, in real time, different data rates for use in transmitting said data to said mobile platform based on which subregion said mobile platform is operating in. - View Dependent Claims (21)
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22. A method for communicating comprising:
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transmitting data from a central control station at a selected one of a plurality of different data transmission rates;
using a space-based subsystem operating in a designated coverage region to receive and transmit said data at said selected data transmission rate;
receiving said data at a receiving station operating within said designated coverage region; and
selecting a maximum data transmission rate for use that still enables closure of a communications link between said space-based subsystem and said receiving station to be maintained. - View Dependent Claims (23, 24, 25)
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Specification