System and Method for Power Control in a Physical Layer Device
First Claim
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1. A method, comprising:
- receiving, by a receiver in a local physical layer device, a signal that is transmitted by a remote physical layer device, said local physical layer device supporting an active operating mode and an energy saving operating mode;
generating a control signal based on a signal level of said received signal; and
adjusting, during said active operating mode, an amplitude of a transmission signal delivered by a transmitter in said local physical layer device to said remote physical layer device using said generated control signal.
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Abstract
A system and method for power control in a physical layer device. Energy savings during an active state can be produced through the monitoring of a received signal level by a receiver in a physical layer device. In one embodiment, based on an indication of the received signal level or other communication characteristic of the transmission medium, a control module can adjust the signal level or amplitude and/or adjust the voltage supply.
251 Citations
20 Claims
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1. A method, comprising:
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receiving, by a receiver in a local physical layer device, a signal that is transmitted by a remote physical layer device, said local physical layer device supporting an active operating mode and an energy saving operating mode; generating a control signal based on a signal level of said received signal; and adjusting, during said active operating mode, an amplitude of a transmission signal delivered by a transmitter in said local physical layer device to said remote physical layer device using said generated control signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method, comprising:
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receiving, by a receiver in a local physical layer device, a signal that is transmitted by a remote physical layer device; generating a control signal based on an indication of a power level of said received signal; and adjusting, using said generated control signal, an output of a power supply used by at least part of said local physical layer device. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A physical layer device that supports an active operating mode and an energy saving mode, comprising:
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a receiver that is coupled to a network cable for receiving a signal transmitted onto said network cable by a remote physical layer device; a control module that generates a control signal based on a signal level of said received signal, said control signal being used by the physical layer device to adjust, during the active operating mode, an amount of power used during transmission of the physical layer device. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification