GPON Rogue-ONU detection based on error counts

Details GPON Rogue-ONU detection based on error counts GPON Rogue-ONU detection based on error counts

2011-08-23

2011-08-23

Abraham, Esaw T (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Error count or rate

C714S752000

Reexamination Certificate

active

08006142

ABSTRACT:
A system, for identifying faults in a GPON that includes an OLT and a plurality of ONUs, including: a global error-counter, coupled to the OLT, for counting FEC-correctable errors, for each ONU, from a data stream from the GPON; and a CPU for extracting an ONU status, indicative of a faulty ONU, contingent on the errors from the global error-counter. A system, for identifying faults in a GPON that includes an OLT and a plurality of ONUs, including: a grant-start error-counter, coupled to the OLT, for counting grant-start errors, for each ONU, from a data stream from the GPON; a grant-end error-counter, coupled to the OLT, for counting grant-end errors for each ONU; and a CPU for extracting an ONU status, indicative of a faulty ONU, contingent on a parameter selected from the group consisting of the grant-start errors, the grant-end errors, and a combination thereof.

REFERENCES:
patent: 7493786 (2009-02-01), Kim et al.
patent: 7502328 (2009-03-01), Lee et al.
patent: 7548694 (2009-06-01), Kazawa et al.
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patent: 7630639 (2009-12-01), Kramer et al.
patent: 2005/0041972 (2005-02-01), Kim et al.

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