Variable line cycle adaptation for powerline communications
First Claim
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1. A method comprising:
- determining, at a first device, signal-to-noise (SNR) characteristics of received signals at various times during a powerline cycle, including a first SNR measurement at a first portion of the powerline cycle and a second SNR measurement at a second portion of the powerline cycle;
determining, at the first device, line cycle adaptation periods within the powerline cycle based at least in part on the SNR characteristics, wherein determining the line cycle adaptation periods includes determining a line cycle adaptation period boundary between the first portion of the powerline cycle and the second portion of the powerline cycle when a difference between the first SNR measurement and the second SNR measurement exceeds a threshold amount, the line cycle adaptation period boundary associated with an end of a first line cycle adaptation period and a beginning of a second line cycle adaptation period; and
coordinating the line cycle adaptation periods with a second device such that subsequent transmissions from the second device are in accordance with line cycle adaptation properties specific to each line cycle adaptation period.
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Abstract
Line cycle adaptation periods may have variable duration. A powerline cycle may be segmented into a plurality of line cycle adaptation periods having variable duration based upon signal-to-noise (SNR) characteristics measured at various times throughout the powerline cycle. The line cycle adaptation periods may include at least two periods with unequal durations. Each line cycle adaptation period may be associated with one or more tone maps defining physical layer transmission properties to be used by a second device for transmissions occurring during the line cycle adaptation period.
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Citations
23 Claims
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1. A method comprising:
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determining, at a first device, signal-to-noise (SNR) characteristics of received signals at various times during a powerline cycle, including a first SNR measurement at a first portion of the powerline cycle and a second SNR measurement at a second portion of the powerline cycle; determining, at the first device, line cycle adaptation periods within the powerline cycle based at least in part on the SNR characteristics, wherein determining the line cycle adaptation periods includes determining a line cycle adaptation period boundary between the first portion of the powerline cycle and the second portion of the powerline cycle when a difference between the first SNR measurement and the second SNR measurement exceeds a threshold amount, the line cycle adaptation period boundary associated with an end of a first line cycle adaptation period and a beginning of a second line cycle adaptation period; and coordinating the line cycle adaptation periods with a second device such that subsequent transmissions from the second device are in accordance with line cycle adaptation properties specific to each line cycle adaptation period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus comprising:
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a processor; a memory to store instructions, which when executed by the processor, cause the apparatus to; determine signal-to-noise (SNR) characteristics of received signals at various times during a powerline cycle, including a first SNR measurement at a first portion of the powerline cycle and a second SNR measurement at a second portion of the powerline cycle; determine line cycle adaptation periods within the powerline cycle based at least in part on the SNR characteristics, and to determine a line cycle adaptation period boundary between the first portion of the powerline cycle and the second portion of the powerline cycle when a difference between the first SNR measurement and the second SNR measurement exceeds a threshold amount, the line cycle adaptation period boundary associated with an end of a first line cycle adaptation period and a beginning of a second line cycle adaptation period; and coordinate the line cycle adaptation periods with a second device such that subsequent transmissions from the second device are in accordance with line cycle adaptation properties specific to each line cycle adaptation period. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A non-transitory computer readable medium storing computer program code, the computer program code comprising instructions which when executed by a processor of a device cause the device to:
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determine signal-to-noise (SNR) characteristics of received signals at various times during a powerline cycle, including a first SNR measurement at a first portion of the powerline cycle and a second SNR measurement at a second portion of the powerline cycle; determine line cycle adaptation periods within the powerline cycle based at least in part on the SNR characteristics and to determine a line cycle adaptation period boundary between the first portion of the powerline cycle and the second portion of the powerline cycle when a difference between the first SNR measurement and the second SNR measurement exceeds a threshold amount, the line cycle adaptation period boundary associated with an end of a first line cycle adaptation period and a beginning of a second line cycle adaptation period; and coordinate the line cycle adaptation periods with a second device such that subsequent transmissions from the second device are in accordance with line cycle adaptation properties specific to each line cycle adaptation period. - View Dependent Claims (22, 23)
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Specification