Noise compensation in satellite communications
First Claim
1. A method comprising:
- identifying a change in a return link signal quality at a gateway for a return link from a terminal communicatively coupled to the gateway through a satellite, said return link being shared by a plurality of terminals having an interference relationship; and
adjusting a data rate for a message sent from the terminal through the return link based on the change in the return link signal quality without changing the interference relationship among the plurality of terminals.
1 Assignment
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Accused Products
Abstract
A quality measure, such as a signal-to-noise ratio, of a signal arriving at a gateway for a return link is used to adjust a data rate for the link. The return link is transferred from a terminal to the gateway through a satellite, and shared by a number of user terminals at any given time, including the terminal for which the data rate is adjusted. The terminals sharing the link have a certain interference relationship. Adjusting a data rate for a message sent from one or more terminals through the return link in the presence of signal degradation or power loss does not appreciably change the interference relationship among the plurality of terminals.
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Citations
59 Claims
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1. A method comprising:
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identifying a change in a return link signal quality at a gateway for a return link from a terminal communicatively coupled to the gateway through a satellite, said return link being shared by a plurality of terminals having an interference relationship; and
adjusting a data rate for a message sent from the terminal through the return link based on the change in the return link signal quality without changing the interference relationship among the plurality of terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. Apparatus comprising:
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means for identifying a change in a return link signal quality at a gateway for a return link between a terminal and a gateway, said return link being shared by a plurality of terminals having an interference relationship; and
means for adjusting a data rate for a message sent from the terminal through the return link based on the change in the return link signal quality without changing the interference relationship among the plurality of terminals. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. Apparatus comprising:
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a comparator to identify a change in a return link signal quality at a gateway for a return link from a terminal communicatively coupled to the gateway through a satellite, said return link being shared by a plurality of terminals, said plurality of terminals having an interference relationship; and
a data rate generator to adjust a data rate for a message sent from the terminal through the return link based on the change in the return link signal-to-noise ratio without changing the interference relationship among the plurality of terminals. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A machine readable medium having stored thereon machine executable instructions that when executed implement a method comprising:
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identifying a change in a return link signal quality at a gateway for a return link from a terminal communicatively coupled to the gateway through a satellite, said return link being shared by a plurality of terminals having an interference relationship; and
adjusting a data rate for a message sent from the terminal through the return link based on the change in the return link signal quality without changing the interference relationship among the plurality of terminals. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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Specification