Dynamic reverse link retransmission timelines in satellite communication systems
First Claim
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1. A method of operating a satellite access network (SAN) of a satellite communication system, the method comprising:
- receiving reverse-link (RL) data from a user terminal via a satellite of the satellite communication system;
dynamically configuring a timeline for processing retransmissions based at least in part on changes in an amount of feeder-link delay between the SAN and the satellite, wherein the timeline includes a timing of retransmission requests initiated by the SAN and a timing of retransmissions initiated by the user terminal in response to the retransmission requests; and
transmitting a retransmission request to the user terminal for at least a portion of the RL data in accordance with the timeline.
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Abstract
A method and apparatus for operating a satellite access network (SAN) of a satellite communication system to schedule communications with a user terminal. In some aspects, the SAN may provision a communication frame, for the user terminal, into a number of forward-link (FL) subframes and a different number of reverse-link (RL) subframes. The SAN then transmits the FL subframes to the user terminal via a forward link of the satellite communication system, and subsequently receives the RL subframes from the user terminal via a reverse link of the satellite communication system.
22 Citations
27 Claims
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1. A method of operating a satellite access network (SAN) of a satellite communication system, the method comprising:
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receiving reverse-link (RL) data from a user terminal via a satellite of the satellite communication system; dynamically configuring a timeline for processing retransmissions based at least in part on changes in an amount of feeder-link delay between the SAN and the satellite, wherein the timeline includes a timing of retransmission requests initiated by the SAN and a timing of retransmissions initiated by the user terminal in response to the retransmission requests; and transmitting a retransmission request to the user terminal for at least a portion of the RL data in accordance with the timeline. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A satellite access network (SAN) comprising:
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one or more processors; and a memory configured to store instructions that, when executed by the one or more processors, cause the SAN to; receive reverse-link (RL) data from a user terminal via a satellite of a satellite communication system; dynamically configure a timeline for processing retransmissions based at least in part on changes in an amount of feeder-link delay between the SAN and the satellite, wherein the timeline includes a timing of retransmission requests initiated by the SAN and a timing of retransmissions initiated by the user terminal in response to the retransmission requests; and transmit a retransmission request to the user terminal for at least a portion of the RL data in accordance with the timeline. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A satellite access network (SAN) comprising:
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means for receiving reverse-link (RL) data from a user terminal via a satellite of a satellite communication system; means for dynamically configuring a timeline for processing the retransmission based at least in part on changes in an amount of feeder-link delay between the SAN and the satellite, wherein the timeline includes a timing of retransmission requests initiated by the SAN and a timing of retransmissions initiated by the user terminal in response to the retransmission requests; and means for transmitting a retransmission request to the user terminal for at least a portion of the RL data in accordance with the timeline. - View Dependent Claims (17, 18, 19, 20, 21)
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22. A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a satellite access network (SAN), cause the SAN to perform operations comprising:
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receiving reverse-link (RL) data from a user terminal via a satellite of a satellite communication system; dynamically configuring a timeline for processing retransmissions based at least in part on changes in an amount of feeder-link delay, wherein the timeline includes a timing of retransmission requests initiated by the SAN and a timing of retransmissions initiated by the user terminal in response to the retransmission requests; and transmitting a retransmission request to the user terminal for at least a portion of the RL data in accordance with the timeline. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification