DOWNSTREAM WAVEFORM MODIFICATION
First Claim
1. A gateway configured to transmit a signal to respective subscriber terminals via a satellite, the gateway comprising:
- a receiver unit configured to;
receive a set of data to be transmitted via the satellite destined for a first subscriber terminal; and
receive data identifying link conditions for the first subscriber terminal;
an adaptive coding and modulation unit, communicatively coupled with the receiver unit, and configured to dynamically assign a modulation and coding format for the set of data based at least in part on the link conditions;
an encapsulation unit, communicatively coupled with the receiver unit and adaptive coding and modulation unit, and configured to;
receive the assigned modulation and coding format for the set of data;
utilize the assigned modulation and coding format to dynamically set a block size for a payload for a first physical layer frame, the block size set to produce a physical layer frame of substantially equal duration in reference to adjacent physical layer frames to be transmitted from the gateway; and
encapsulate a subset of the set of data in the set block size for the payload of the first physical layer frame, the first physical layer frame including a header with a sub-channel identifier formatted to allow subscriber terminal filtering; and
a transmitter unit, communicatively coupled with the encapsulation unit, and configured to upconvert the physical layer frame and transmit the upconverted frame to the satellite.
5 Assignments
0 Petitions
Accused Products
Abstract
Systems, devices, processors, and methods are described for the transmission and reception of broadband signals between a gateway and subscriber terminals via satellite. In one set of embodiments, a wireless signal is generated and transmitted including a series of frames including a physical layer header and payload. A sub-channel identifier may be included in the physical layer header to identify the sub-channel for the payload, and allow for various novel filtering techniques at the subscriber terminal. The frames may be generated to be of substantially equal duration. Novel subscriber terminal configurations are described to leverage this formatting.
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Citations
25 Claims
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1. A gateway configured to transmit a signal to respective subscriber terminals via a satellite, the gateway comprising:
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a receiver unit configured to; receive a set of data to be transmitted via the satellite destined for a first subscriber terminal; and receive data identifying link conditions for the first subscriber terminal; an adaptive coding and modulation unit, communicatively coupled with the receiver unit, and configured to dynamically assign a modulation and coding format for the set of data based at least in part on the link conditions; an encapsulation unit, communicatively coupled with the receiver unit and adaptive coding and modulation unit, and configured to; receive the assigned modulation and coding format for the set of data; utilize the assigned modulation and coding format to dynamically set a block size for a payload for a first physical layer frame, the block size set to produce a physical layer frame of substantially equal duration in reference to adjacent physical layer frames to be transmitted from the gateway; and encapsulate a subset of the set of data in the set block size for the payload of the first physical layer frame, the first physical layer frame including a header with a sub-channel identifier formatted to allow subscriber terminal filtering; and a transmitter unit, communicatively coupled with the encapsulation unit, and configured to upconvert the physical layer frame and transmit the upconverted frame to the satellite. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A processor for encapsulating a physical layer frame, the processor comprising:
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a receiver unit configured to receive a set of data to be transmitted via a satellite destined for a first subscriber terminal; an adaptive coding and modulation unit, communicatively coupled with the receiver unit, and configured to assign a modulation and coding format for the set of data based at least in part on data identifying link conditions from the satellite to the first subscriber terminal; and an encapsulation unit, communicatively coupled with the receiver unit and the adaptive coding and modulation unit, and configured to; receive the assigned modulation and coding format for the set of data; utilize the assigned modulation and coding format to dynamically set a block size for payload for a first physical layer frame, the block size set to produce a physical layer frame of substantially equal duration in reference to adjacent physical layer frames to be transmitted; identify a subset of the set of data for the payload for the frame; and encapsulate the identified subset to produce the physical layer frame.
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13. A method of producing a physical layer frame to be directed to a subscriber terminal via a satellite, the method comprising:
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receiving an identification of a modulation and coding format for data to be transmitted to a first subscriber terminal, the format dynamically assigned at least in part based on link conditions for a first subscriber terminal; utilizing the identified modulation and coding format to dynamically set a block size for payload for a first physical layer frame, the block size set to produce a physical layer frame of substantially equal duration in reference to adjacent physical layer frames to be transmitted; encapsulating an amount of data of the set block size to produce the payload for the first physical layer frame; and appending a header to the payload to produce the physical layer frame, the header formatted with an identifier to allow subscriber terminal filtering of packets before the payload is demodulated or decoded. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A satellite communications system comprising:
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a gateway comprising; an adaptive coding and modulation unit configured to dynamically assign a modulation and coding format for data destined for a subscriber terminal based at least in part on link conditions between a satellite and the subscriber terminal; an encapsulation unit, communicatively coupled with the adaptive coding and modulation unit, and configured to; receive the assigned modulation and coding format for the set of data; utilize the assigned modulation and coding format to dynamically set a block size for payload for a physical layer frame, the block size set to produce a physical layer frame of substantially equal duration in reference to adjacent physical layer frames transmitted from the gateway; and encapsulate a subset of the set of data as the payload to produce the physical layer frame; and a transmitter unit, communicatively coupled with the encapsulation unit, and configured to upconvert the physical layer frame and transmit the upconverted frame as a wireless signal to the satellite; the satellite, communicatively coupled with the subscriber terminal and the gateway, and configured to receive the wireless signal from the gateway and retransmit the received signal to the subscriber terminal; and the subscriber terminal configured to receive the signal transmitted via the satellite.
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23. A signal embodied in a transmission medium, the signal comprising a plurality of physical layer frames, the signal comprising:
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a first physical layer frame including; a first payload in a dynamically assigned first modulation and coding format; and a first physical layer header with a first sub-channel identifier formatted to allow subscriber terminal filtering of packets before the first payload is demodulated or decoded; and a second physical layer frame including; a second payload in a dynamically assigned second modulation and coding format, wherein the block size of data for the second payload was dynamically set to produce a physical layer frame of substantially equal duration to the first physical layer frame; and a second physical layer header with a second sub-channel identifier formatted to allow subscriber terminal filtering of packets before the second payload is demodulated or decoded. - View Dependent Claims (24, 25)
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Specification