Intelligent power balancing for NBASE-T ethernet
First Claim
1. A method of operation in an Ethernet integrated circuit (IC) chip having multiple channels, the method comprising:
- during an offline mode of operation,measuring a signal-to-noise ratio (SNR) for each of the channels with a receiver corresponding to each channel;
determining a transmit power level for a link partner transmitter, the transmit power level representing a minimum power level at the link partner transmitter that results in the measured SNR value at the receiver satisfying a predetermined SNR threshold;
communicating the transmit power level to the link partner transmitter; and
during an on-line mode of operation,transceiving first Ethernet data based on the determined transmit power level; and
updating the determined transmit power level bymeasuring a run-time SNR,determining an updated transmit power level based on the measured run-time SNR,communicating the updated transmit power level to the link partner transmitter, andtransceiving second Ethernet data based on the updated transmit power level.
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Accused Products
Abstract
A method for determining a power back-off value for an Ethernet channel is disclosed. The method includes measuring a signal-to-noise ratio (SNR) for each of the channels with a receiver corresponding to each channel. A transmit power level for a link partner transmitter is determined, where the transmit power level represents a minimum power level at the link partner transmitter that results in the measured SNR value at the receiver satisfying a predetermined SNR threshold. The transmit power level is communicated to the link partner transmitter and Ethernet data is then transceived between the link partners based on the determined transmit power level.
79 Citations
10 Claims
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1. A method of operation in an Ethernet integrated circuit (IC) chip having multiple channels, the method comprising:
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during an offline mode of operation, measuring a signal-to-noise ratio (SNR) for each of the channels with a receiver corresponding to each channel; determining a transmit power level for a link partner transmitter, the transmit power level representing a minimum power level at the link partner transmitter that results in the measured SNR value at the receiver satisfying a predetermined SNR threshold; communicating the transmit power level to the link partner transmitter; and during an on-line mode of operation, transceiving first Ethernet data based on the determined transmit power level; and updating the determined transmit power level by measuring a run-time SNR, determining an updated transmit power level based on the measured run-time SNR, communicating the updated transmit power level to the link partner transmitter, and transceiving second Ethernet data based on the updated transmit power level. - View Dependent Claims (2, 3, 4, 5)
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6. An Ethernet integrated circuit (IC) chip, the Ethernet IC chip comprising:
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interface circuitry for coupling to multiple channels; receiver circuitry to receive signals from multiple channels via the interface circuitry; logic coupled to the interface circuitry, the logic operable to, for each of the multiple channels during an offline mode of operation, measure a signal-to-noise ratio (SNR) value for signals received over a given one of the multiple channels, determine a transmit power level representing a minimum power level at the link partner transmitter that results in the measured SNR value at the receiver satisfying a predetermined SNR threshold; and during an online mode of operation, updating the determined transmit power level by measuring a run-time SNR, determining an updated transmit power level based on the measured run-time SNR, and transmitter circuitry to transmit the updated transmit power level to the link partner transmitter. - View Dependent Claims (7, 8, 9, 10)
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Specification