US 12,407,375 B2
Initialization and synchronization for pulse power in a network system
Douglas Paul Arduini, Florence, OR (US); Sung Kee Baek, San Ramon, CA (US); Richard Anthony O'Brien, Livermore, CA (US); Joel Richard Goergen, Soulsbyville, CA (US); Chad M. Jones, Doylestown, OH (US); Jason DeWayne Potterf, Austin, TX (US); and Ruqi Li, Fremont, CA (US)
Assigned to CISCO TECHNOLOGY, INC., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Jul. 11, 2024, as Appl. No. 18/769,534.
Application 17/171,723 is a division of application No. 16/671,508, filed on Nov. 1, 2019, granted, now 11,063,630, issued on Jul. 13, 2021.
Application 18/769,534 is a continuation of application No. 17/171,723, filed on Feb. 9, 2021, granted, now 12,113,588.
Prior Publication US 2024/0364383 A1, Oct. 31, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 3/54 (2006.01); G01R 31/08 (2020.01); G01R 31/50 (2020.01); G05B 9/02 (2006.01); G06F 1/30 (2006.01); H02J 13/00 (2006.01); H04L 12/10 (2006.01); H04L 12/40 (2006.01)
CPC H04B 3/54 (2013.01) [G01R 31/083 (2013.01); G01R 31/50 (2020.01); G05B 9/02 (2013.01); G06F 1/305 (2013.01); H02J 13/00 (2013.01); H02J 13/00032 (2020.01); H04L 12/10 (2013.01); H04L 12/40045 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving first pulse power from power sourcing equipment at a powered device;
synchronizing the powered device with a waveform of the first pulse power received from the power sourcing equipment such that a modulator switch at the power sourcing equipment is turned on before a modulator switch at the powered device is turned on and the modulator switch at the powered device is turned off before the modulator switch at the power sourcing equipment is turned off;
operating the powered device with second pulse power received from the power sourcing equipment, wherein the first pulse power is at a power level lower than a power level of the second pulse power; and
starting up a transceiver at the powered device for communication with the power sourcing equipment before receiving the second pulse power.