Protecting optical transports from consecutive identical digits in optical computer networks
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United States of America Patent
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May 20, 2014
Grant Date -
Aug 8, 2013
app pub date -
Feb 2, 2012
filing date -
Feb 2, 2012
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Abstract
In general, techniques are described for protecting optical networks from consecutive identical digit (CID) errors. An optical network device comprising a control unit and an interface may implement the techniques described in this disclosure. The control unit determines whether a data packet will result in a CID error prior to encapsulating at least a portion of the data packet to form a passive optical network (PON) frame and then, in response to the determination that the data packet will result in the CID error, modifies the data packet to form a modified data packet so that the modified data packet will not result in the CID error. The control unit encapsulates the modified data packet to form a PON frame. The control unit applies a scrambling polynomial to the PON frame to form a scrambled PON frame. The interface transmits the scrambled PON frame.
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