Interleaved signaling
First Claim
1. A method of scheduling signal transmission for a plurality of devices configured to transmit signals through different transmission mediums to a combiner for combination into a common transmission medium, the method comprising:
- determining attenuation associated with the different transmission mediums used by the plurality of devices to communicate with the combiner;
identifying a first device of the plurality of devices having attenuation within a first attenuation range;
identifying a second device of the plurality of devices having attenuation within a second attenuation range, the second attenuation range being less than the first attenuation range;
instructing the first device to transmit according to pulse amplitude modulation (PAM), including instructing the first device to convert to the frequency domain a first PAM carrier block used to convey the signal transmission, the first PAM being converted to create a first converted PAM carrier block having at least one spectral hole;
instructing the second device to transmit according to orthogonal frequency division multiplexing (OFDM), including instructing the second device to convert a second OFDM carrier block used to convey the signal transmission, the second OFDM carrier block being converted to create a second converted OFDM carrier block that fills at least one of the at least one spectral hole; and
instructing the first device and the second device to respectively transmit the first converted PAM carrier block and the second converted OFDM carrier block at a same frequency band, a same transmission block duration, and a same transmission block start time, thereby resulting in the combiner adding the first converted PAM carrier block with the second converted OFDM carrier block for transmission over the common transmission medium.
1 Assignment
0 Petitions
Accused Products
Abstract
Signal interleaving of multiple signals, such as those associated with transmissions within a high-speed data network from subscribers to the Internet or other locations, is contemplated. The transmitted signals may be interleaved by adding signals from one subscriber with those transmitted from another subscriber. The transmitted signals may include spectral holes such that when one or more spectral holes of the signal sent from one subscriber add together with signals from another subscriber, or other simultaneously transmitting device, it fills spectral holes in a manner that maximizes transmission capabilities.
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Citations
20 Claims
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1. A method of scheduling signal transmission for a plurality of devices configured to transmit signals through different transmission mediums to a combiner for combination into a common transmission medium, the method comprising:
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determining attenuation associated with the different transmission mediums used by the plurality of devices to communicate with the combiner; identifying a first device of the plurality of devices having attenuation within a first attenuation range; identifying a second device of the plurality of devices having attenuation within a second attenuation range, the second attenuation range being less than the first attenuation range; instructing the first device to transmit according to pulse amplitude modulation (PAM), including instructing the first device to convert to the frequency domain a first PAM carrier block used to convey the signal transmission, the first PAM being converted to create a first converted PAM carrier block having at least one spectral hole; instructing the second device to transmit according to orthogonal frequency division multiplexing (OFDM), including instructing the second device to convert a second OFDM carrier block used to convey the signal transmission, the second OFDM carrier block being converted to create a second converted OFDM carrier block that fills at least one of the at least one spectral hole; and instructing the first device and the second device to respectively transmit the first converted PAM carrier block and the second converted OFDM carrier block at a same frequency band, a same transmission block duration, and a same transmission block start time, thereby resulting in the combiner adding the first converted PAM carrier block with the second converted OFDM carrier block for transmission over the common transmission medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of scheduling signal transmission for a plurality of devices configured to transmit signals through different transmission mediums to a combiner for combination into a common transmission medium, the method comprising:
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determining attenuation associated with the different transmission mediums used by the plurality of devices to communicate with the combiner; instructing a first portion of the plurality of devices having attenuation within a first attenuation range to transmit at a first instance with a first guard interval such that the corresponding signal transmissions are added together at the combiner for transmission to the common transmission medium; and instructing a second portion of the plurality of devices having attenuation within a second attenuation range to transmit at a second instance with a second guard interval such that the corresponding signal transmissions are added together at the combiner for transmission to the common transmission medium, the first attenuation being greater than and outside the second attenuation range, the second guard interval being less than the first guard interval. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of scheduling signal transmission for a plurality of devices, the method comprising:
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determining attenuation associated with different transmission mediums used by the plurality of devices; identifying a first device of the plurality of devices having attenuation within a first attenuation range; identifying a second device of the plurality of devices having attenuation within a second attenuation range, the second attenuation range being less than the first attenuation range; instructing the first device to transmit a first carrier block having at least one spectral hole; instructing the second device to transmit a second carrier block that fills at least one of the at least one spectral hole; and instructing the first device and the second device to respectively transmit the first and second carrier blocks at a same guard interval, a same frequency band, a same transmission block duration, and a same transmission block start time. - View Dependent Claims (16, 17)
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18. A method of facilitating removal of linear distortions associated with a signal burst issued from a transmitter to be carried over communication medium to a combiner for further transmission, the method comprising:
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determining an echo associated with the communication medium; adding a pre-distortion to an end of the signal burst, the pre-distortion corresponding with an inverse of the echo; and transmitting a combined signal over the communication medium, the combined signal including the signal burst and the pre-distortion. - View Dependent Claims (19, 20)
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Specification