System and method for using an ethernet physical layer...

Details System and method for using an ethernet physical layer... System and method for using an ethernet physical layer...

2008-03-14

2011-10-11

Suryawanshi, Suresh (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

C710S100000, C709S224000

Reexamination Certificate

active

08037323

ABSTRACT:
A system and method for using an Ethernet physical layer device to identify cabling topologies. A power sourcing equipment (PSE) can power independent powered devices (PDs) using two sets of wire pairs in a single four-pair cable. Higher power PSEs can power a single PD using all four wire pairs in the cable. Conventional power over Ethernet (PoE) analog techniques (i.e., voltage, current, etc.) have a difficult time distinguishing where the wire pairs are going from the PSE. By using information (e.g., negotiated speed, link energy, distance diagnostic, etc.) generated by the physical layer device (PHY) subsystem, the PoE system can determine whether the two sets of wire pairs in a cable are powering a single PD or two independent PDs.

REFERENCES:
patent: 7240224 (2007-07-01), Biederman
patent: 7460889 (2008-12-01), Darshan et al.
patent: 7593756 (2009-09-01), Ferentz et al.
patent: 7613939 (2009-11-01), Karam et al.
patent: 7705741 (2010-04-01), Picard
patent: 7814346 (2010-10-01), Diab
patent: 2005/0197094 (2005-09-01), Darshan et al.
patent: 2007/0278857 (2007-12-01), Robbins
patent: 2007/0288771 (2007-12-01), Robbins
patent: 2009/0083550 (2009-03-01), Diab
patent: 2009/0172421 (2009-07-01), Schindler

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