Aggregate rate modem
First Claim
1. A terminal to receive a signal from a satellite, the terminal comprising:
- a receiver configured to receive the signal transmitted via the satellite;
a header processor, communicatively coupled with the receiver, and configured to;
receive a digitized stream comprising a physical layer signal representative of the received signal;
process the digitized stream to detect a first physical layer header portion of the digitized stream; and
demodulate and decode the first physical layer header portion to identify a first sub-channel identifier for a physical layer payload associated with the first physical layer header portion;
a buffer, communicatively coupled with the receiver and a filter, and configured to store at least part of the digitized stream comprising the physical layer payload associated with the first physical layer header portion; and
the filter, communicatively coupled with the header processor, and configured to;
store one or more sub-channel identifiers indicating whether an associated physical layer payload is to be demodulated and decoded by the terminal;
determine that the first sub-channel identifier matches one or more of the stored identifiers indicating that an associated physical layer payload should be filtered before demodulation and decoding; and
filter the physical layer payload associated with the first physical layer header portion by controlling the buffer to overwrite the stored part of the digitized stream comprising the physical layer payload before the physical layer payload is forwarded for demodulation or decoding to prevent demodulation and decoding.
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
29 Claims
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1. A terminal to receive a signal from a satellite, the terminal comprising:
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a receiver configured to receive the signal transmitted via the satellite; a header processor, communicatively coupled with the receiver, and configured to; receive a digitized stream comprising a physical layer signal representative of the received signal; process the digitized stream to detect a first physical layer header portion of the digitized stream; and demodulate and decode the first physical layer header portion to identify a first sub-channel identifier for a physical layer payload associated with the first physical layer header portion; a buffer, communicatively coupled with the receiver and a filter, and configured to store at least part of the digitized stream comprising the physical layer payload associated with the first physical layer header portion; and the filter, communicatively coupled with the header processor, and configured to; store one or more sub-channel identifiers indicating whether an associated physical layer payload is to be demodulated and decoded by the terminal; determine that the first sub-channel identifier matches one or more of the stored identifiers indicating that an associated physical layer payload should be filtered before demodulation and decoding; and filter the physical layer payload associated with the first physical layer header portion by controlling the buffer to overwrite the stored part of the digitized stream comprising the physical layer payload before the physical layer payload is forwarded for demodulation or decoding to prevent demodulation and decoding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 18, 19, 20)
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8. A processor for processing a digitized representation of a signal received from a satellite, the processor comprising:
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a header processor configured to; receive a digitized stream comprising a physical layer signal representative of the signal received from the satellite; process the digitized stream to detect a first physical layer header portion of the digitized stream; detect from the first physical layer header portion a first sub-channel identifier for a physical layer payload associated with the first physical layer header portion; and instruct a buffer to store at least part of the digitized stream comprising the physical layer payload associated with the first physical layer header portion; and a filter, communicatively coupled with the header processor, and configured to; access a stored listing of one or more sub-channel identifiers indicating whether an associated physical layer payload is to be demodulated and decoded; determine whether the first sub-channel identifier matches one or more of the listed identifiers that indicate an associated physical layer payload is to be demodulated and decoded; and filter the digitized stream comprising the physical layer payload associated with the first physical layer header portion by controlling the buffer to overwrite the stored part of the digitized stream comprising the physical layer payload before the physical layer payload is forwarded for demodulation or decoding to prevent the filtered payload from being demodulated and decoded. - View Dependent Claims (9, 10)
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11. A method of processing a digital representation of a signal received from a satellite, the method comprising:
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receiving a digitized stream comprising a physical layer signal representative of the signal received from the satellite; identifying a first physical layer header portion of the digitized stream; demodulating and decoding the physical layer header portion to identify a sub-channel identifier for a physical layer payload associated with the physical layer header portion; buffering at least part of the digitized stream comprising the physical layer payload; determining whether the sub-channel identifier corresponds to an indication that an associated physical layer payload is to be filtered from demodulation and decoding; and filtering the digitized stream comprising the physical layer payload by overwriting the buffered part of the digitized stream comprising the physical layer payload to prevent the payload from being demodulated or decoded, responsive to the determining step. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A satellite communications system comprising:
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a gateway configured to transmit a signal sent to a satellite for retransmission to a terminal; the satellite, in communication with the terminal and the gateway, and configured to receive the signal from the gateway and retransmit the received signal to the terminal; and the terminal comprising; a receiver configured to receive the retransmitted wireless signal from the satellite; a header processor, communicatively coupled with the receiver, and configured to; receive a digitized stream comprising a physical layer signal representative of the signal from the satellite; process the digitized stream to recognize a header identifier identifying a physical layer header portion of the digitized stream; and demodulate and decode the physical layer header portion to identify a sub-channel identifier for payload associated with the physical layer header portion; a buffer, communicatively coupled with the receiver and a filter, and configured to store at least part of the digitized stream comprising the payload associated with the physical layer header portion; and the filter, communicatively coupled with the header processor, and configured to; access a listing of one or more sub-channel identifiers indicating whether an associated physical layer payload is to be demodulated and decoded; determine that the identified sub-channel identifier matches at least one of the listed identifiers indicating the payload associated with the physical layer header portion is to be prevented from being demodulated and decoded; and filter the digitized stream comprising the payload associated with the physical layer header portion by controlling the buffer to overwrite the stored part of the digitized stream comprising said payload before said payload is forwarded for demodulation or decoding to prevent said payload from being demodulated and decoded.
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21. A device to receive a signal from a satellite, the device comprising:
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a receiver configured to receive a digitized stream comprising a physical layer signal representative of the signal received via the satellite; a processor, communicatively coupled with the receiver and configured to; process the digitized stream to detect a physical layer header portion of the digitized stream; process the physical layer header portion to identify a received sub-channel identifier for a physical layer payload associated with the physical layer header portion; and determine, responsive to the received sub-channel identifier, whether to; demodulate and decode the physical layer payload associated with the physical layer header portion;
ordiscard the physical layer payload associated with the physical layer header portion; a memory communicatively coupled with the processor and configured to buffer at least part of the digitized stream comprising the physical layer payload; and a filter communicatively coupled with the processor and configured to filter the physical layer payload associated with the physical layer header portion by overwriting the buffered part of the digitized stream to prevent the payload from being demodulated and decoded. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A device to receive a signal from a satellite, the device comprising:
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means for receiving a digitized stream comprising a physical layer signal representative of the signal received via the satellite; means for processing the digitized stream to detect a physical layer header portion of the digitized stream; means for processing the physical layer header portion to identify a received sub-channel identifier for a physical layer payload associated with the physical layer header portion; means for buffering at least part of the digitized stream comprising the physical layer payload; means for determining, responsive to the received sub-channel identifier, whether to A) demodulate and decode the physical layer payload associated with the physical layer header portion, or B) discard the physical layer payload associated with the physical layer header portion; and means for filtering the digitized stream comprising the physical layer payload to discard the physical layer payload by overwriting the buffered part of the digitized stream comprising the physical layer payload and thereby prevent the payload from being demodulated and decoded. - View Dependent Claims (28, 29)
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Specification