WAVELENGTH DIVISION MULTIPLEXING TRANSMISSION SYSTEM

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United States of America Patent

APP PUB NO 20170047990A1
SERIAL NO

15237051

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In a wavelength division multiplexing transmission system, a controller of a relay node of a post-stage notifies level decrease information to a transmission node, upon detecting a decrease in a level of a wavelength in a wavelength multiplex signal received from the transmission node of a pre-stage by the optical channel monitor of the transmission node. The controller of the transmission node of the pre-stage determines that a failure occurs in the wavelength of the transponder of the transmission node, upon detecting a decrease in the level of the wavelength in the wavelength multiplex signal transmitted to the relay node by the optical channel monitor of the transmission node and upon receiving the level decrease information for the wavelength from the relay node. Therefore, a wavelength channel failure in the transponder can be determined in a preferable manner.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJITSU LIMITEDKAWASAKI18047

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
KARUBE, Ryo Kawasaki, JP 1 1
KASEZAWA, Akihide Kawasaki, JP 2 8
KAWAGUCHI, Akihisa Kawasaki, JP 7 46
MURAKAMI, Shoichi Kawasaki, JP 28 86
SATO, Reiko Kawasaki, JP 21 97
SUZUKI, Tonoyuki Kawasaki, JP 1 1
TANONAKA, Koji Kawasaki, JP 6 41

Cited Art Landscape

Patent Info (Count) # Cites Year
 
NEC CORPORATION (1)
* 2013/0294,770 MONITORING SYSTEM, MONITORING METHOD AND MONITORING PROGRAM 1 2011
 
FUJITSU LIMITED (2)
* 2013/0243,424 OPTICAL CHANNEL MONITOR 2 2013
* 2016/0315,729 OPTICAL TRANSMISSION DEVICE THAT TRANSMITS WAVELENGTH DIVISION MULTIPLEXED OPTICAL SIGNAL AND OPTICAL TRANSMISSION SYSTEM 0 2016
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
CIENA CORPORATION (1)
* 9634791 Flexible optical spectrum management systems and methods 0 2015
* Cited By Examiner