Joint transmission power control method and transponded communication system
First Claim
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1. A method for joint transmission power control, comprising:
- transmitting, by a plurality of communication terminals, a plurality of uplink signals to a bent pipe transponder through a plurality of uplinks respectively;
combining, by the bent pipe transponder, the plurality of uplink signals to generate a combined downlink signal, and transmitting the combined downlink signal to a ground hub through a combined downlink;
extracting, by the ground hub, a plurality of downlink signals from the combined downlink signal, wherein each downlink signal corresponds to one of the plurality of uplink signals and a transponded link, each transponded link is defined as one uplink plus a corresponding downlink from the bent pipe transponder to the ground hub;
performing, by the ground hub, a link information estimation and pre-qualification process by using the plurality of downlink signals to determine whether a selected waveform is supported by a corresponding transponded link; and
performing, by the ground hub, a joint transmission power control process by using the plurality of downlink signals to determine whether a set of link waveforms corresponding to a plurality of transponded links are supported when required downlink margins and required uplink margins are satisfied.
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Abstract
A joint transmission power control and a transponder communication system, transmitting a plurality of uplink signals to a bent pipe transponder, combining the plurality of uplink signals to generate a combined downlink signal, transmitting the combined downlink signal to a ground hub, performing an estimate and pre-qualification process by the plurality of down link signals to determine a selected waveform, perform the join transmission power control of uplink margins are satisfied.
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Citations
20 Claims
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1. A method for joint transmission power control, comprising:
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transmitting, by a plurality of communication terminals, a plurality of uplink signals to a bent pipe transponder through a plurality of uplinks respectively; combining, by the bent pipe transponder, the plurality of uplink signals to generate a combined downlink signal, and transmitting the combined downlink signal to a ground hub through a combined downlink; extracting, by the ground hub, a plurality of downlink signals from the combined downlink signal, wherein each downlink signal corresponds to one of the plurality of uplink signals and a transponded link, each transponded link is defined as one uplink plus a corresponding downlink from the bent pipe transponder to the ground hub; performing, by the ground hub, a link information estimation and pre-qualification process by using the plurality of downlink signals to determine whether a selected waveform is supported by a corresponding transponded link; and performing, by the ground hub, a joint transmission power control process by using the plurality of downlink signals to determine whether a set of link waveforms corresponding to a plurality of transponded links are supported when required downlink margins and required uplink margins are satisfied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A transponded communication system, comprising:
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a plurality of communication terminals configured for transmitting a plurality of uplink signals through a plurality of uplinks respectively; a bent pipe transponder configured for receiving and combining the plurality of uplink signals to generate a combined downlink signal, and transmitting the combined downlink signal through a combined downlink; and a ground hub configured for; receiving the combined downlink signal, extracting a plurality of downlink signals from the combined downlink signal, wherein each downlink signal corresponds to one of the plurality of uplink signals and a transponded link, each transponded link is defined as one uplink plus a corresponding downlink from the bent pipe transponder to the ground hub, performing a link information estimation and pre-qualification process by using the plurality of downlink signals to determine whether a selected waveform is supported by a corresponding transponded link, and performing a joint transmission power control process by using the plurality of downlink signals to determine whether a set of link waveforms corresponding to a plurality of transponded links are supported when required downlink margins and required margins uplink margins are satisfied. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification