Providing power over ethernet cables
First Claim
Patent Images
1. A method comprising, by one or more computing devices:
- determining whether a powered device receiving power from a power delivery system requires less power than it is receiving from the power delivery system, the powered device receiving power from the power delivery system on all four wire pairs of an Ethernet cable coupling the powered device to the power delivery system;
if the powered device requires less power, causing power to be provided to the powered device on fewer than all the wire pairs;
determining, based on power information from the powered device communicated using a network discovery protocol, whether a power requirement of the powered device exceeds a predetermined threshold; and
if the power requirement exceeds the predetermined threshold, causing power to be provided to the powered device on all the wire pairs.
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Abstract
A method for power delivery comprises coupling an Ethernet cable comprising four wire pairs to a power delivery system and providing power to a powered device on all of the wire pairs. A power delivery system includes an interface operable to couple to an Ethernet cable comprising four wire pairs and a controller operable to provide power to a powered device on all of the wire pairs.
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Citations
12 Claims
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1. A method comprising, by one or more computing devices:
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determining whether a powered device receiving power from a power delivery system requires less power than it is receiving from the power delivery system, the powered device receiving power from the power delivery system on all four wire pairs of an Ethernet cable coupling the powered device to the power delivery system; if the powered device requires less power, causing power to be provided to the powered device on fewer than all the wire pairs; determining, based on power information from the powered device communicated using a network discovery protocol, whether a power requirement of the powered device exceeds a predetermined threshold; and if the power requirement exceeds the predetermined threshold, causing power to be provided to the powered device on all the wire pairs. - View Dependent Claims (2, 3, 4)
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5. An apparatus comprising:
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one or more computer-readable non-transitory storage media embodying one or more instructions; and one or more processors coupled to the media and operable when executing the instructions to; determine whether a powered device receiving power from a power delivery system requires less power than it is receiving from the power delivery system, the powered device receiving power from the power delivery system on all four wire pairs of an Ethernet cable coupling the powered device to the power delivery system; if the powered device requires less power, cause power to be provided to the powered device on fewer than all the wire pairs; determine, based on power information from the powered device communicated using a network discovery protocol, whether a power requirement of the powered device exceeds a predetermined threshold; and if the power requirement exceeds the predetermined threshold, cause power to be provided to the powered device on all the wire pairs. - View Dependent Claims (6, 7, 8)
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9. One or more computer-readable non-transitory storage media embodying software that is operable when executed to:
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determine whether a powered device receiving power from a power delivery system requires less power than it is receiving from the power delivery system, the powered device receiving power from the power delivery system on all four wire pairs of an Ethernet cable coupling the powered device to the power delivery system; if the powered device requires less power, cause power to be provided to the powered device on fewer than all the wire pairs; determining, based on power information from the powered device communicated using a network discovery protocol, whether a power requirement of the powered device exceeds a predetermined threshold; and if the power requirement exceeds the predetermined threshold, causing power to be provided to the powered device on all the wire pairs. - View Dependent Claims (10, 11, 12)
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Specification