System and method for pathological pattern protection
First Claim
Patent Images
1. A system for protection against pathological patterns in a Frame Synchronous Scrambled network communication, the system comprising:
- at least one transmitter comprising;
at least one pathological pattern detector that detects one or more undesirable bit patterns in an incoming traffic stream; and
at least one bit pattern modification module that modifies the one or more undesirable bit patterns to produce a modified traffic stream;
wherein the at least one transmitter transmits the modified traffic stream;
wherein the at least one bit pattern modification module comprises;
a replacement pattern generator that generates at least one replacement bit pattern;
at least one multiplexer that replaces at least a portion of the one or more undesirable bit patterns with the at least one replacement bit pattern;
an insertion pattern generator that generates at least one insertion pattern; and
at least one multiplexer that inserts the at least one insertion bit pattern into the one or more undesirable bit patterns of the incoming traffic stream.
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Abstract
In a frame synchronous scrambled communications network, communications are protected from pathological bit patterns that may lead to loss of receiver lock by detecting a pathological bit pattern in an incoming traffic stream using a pathological pattern detector. When a pathological bit pattern, such as a transition-less bit pattern, is detected, a corrective bit pattern is generated and inserted or substituted into the incoming traffic stream before transmission to the receiver. The receiver can be configured to revert the modified traffic stream back to the original traffic stream.
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Citations
14 Claims
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1. A system for protection against pathological patterns in a Frame Synchronous Scrambled network communication, the system comprising:
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at least one transmitter comprising; at least one pathological pattern detector that detects one or more undesirable bit patterns in an incoming traffic stream; and at least one bit pattern modification module that modifies the one or more undesirable bit patterns to produce a modified traffic stream; wherein the at least one transmitter transmits the modified traffic stream; wherein the at least one bit pattern modification module comprises; a replacement pattern generator that generates at least one replacement bit pattern; at least one multiplexer that replaces at least a portion of the one or more undesirable bit patterns with the at least one replacement bit pattern; an insertion pattern generator that generates at least one insertion pattern; and at least one multiplexer that inserts the at least one insertion bit pattern into the one or more undesirable bit patterns of the incoming traffic stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for correcting pathological patterns in a Frame Synchronous Scrambled network communication, the method comprising:
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receiving an incoming traffic stream, at a receiver; detecting an undesirable bit pattern in the incoming traffic stream via a processor; and modifying the undesirable bit pattern to produce a modified traffic stream; wherein modifying the undesirable bit pattern comprises at least one of; generating, by a replacement pattern generator, a bit transition pattern and replacing, by at least one multiplexer, at least a portion of the undesirable bit pattern with the bit transition pattern; and generating, by an insertion pattern generator, a bit transition pattern and inserting, by at least one multiplexer, the bit transition pattern into the undesirable bit pattern.
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14. A telecommunications system comprising:
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a transmitter comprising; a frame synchronous scrambler that scrambles an incoming traffic stream; a pattern detector that detects one or more undesirable bit patterns in a scrambled traffic stream; a bit pattern modification module that modifies the one or more undesirable bit patterns to produce a modified traffic stream; and at least one receiver that receives the modified traffic stream and reverts the modified traffic stream; wherein the at least one bit pattern modification module provides at least one of; replaces, by a replacement pattern generator, an original undesirable bit pattern with a replacement bit pattern in the modified traffic stream and wherein the receiver reverts the replacement bit pattern to the original undesirable bit pattern; and inserts, by an insertion pattern generator, an insertion bit pattern into the modified traffic stream and wherein the receiver removes the insertion bit pattern from the modified traffic stream.
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Specification