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US Patent 6775237 - Methods and apparatus for burst tolerant excessive bit error rate alarm detection and clearing
US Patent Issued on August 10, 2004
Estimated Patent Expiration Date:
March 29, 2021Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
March 29, 2021Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractThe excessive bit error rate detection algorithm operates in two modes: BURST mode and non-BURST mode. In non-BURST mode, an alarm state is entered if an error count exceeds a threshold within a set number of frames and exits the alarm state when the error count stays below a threshold for a set number of frames. In the BURST mode, the alarm state is not entered unless the error count exceeds the threshold two consecutive times and does not exit the alarm state unless the error rate remains below a threshold for two consecutive frame counts.Other References
| InventorsAssigneeApplicationNo. 09912086 filed on 03/29/2001US Classes:370/241, DIAGNOSTIC TESTING (OTHER THAN SYNCHRONIZATION)370/244, Of a switching system370/907, Synchronous Optical network (SONET)375/224, TESTING714/48, Error detection or notification714/704Error count or rateField of Search370/241, DIAGNOSTIC TESTING (OTHER THAN SYNCHRONIZATION)370/242, Fault detection370/243, Of a repeater system370/244, Of a switching system370/246, Of a repeater370/250, Of a switching system370/252, Determination of communication parameters370/395.51, Utilizing a plurality of ATM networks (e.g., MPOA, SONET, or SDH)370/907, Synchronous Optical network (SONET)375/224, TESTING714/100, DATA PROCESSING SYSTEM ERROR OR FAULT HANDLING714/2, Fault recovery714/25, Fault locating (i.e., diagnosis or testing)714/48, Error detection or notification714/704, Error count or rate714/708Shutdown or establishing system parameter (e.g., transmission rate)ExaminersPrimary: Duong, FrankAttorney, Agent or FirmUS Patent References3916379, 5138616, Continuous on-line link error rate detector utilizing the frame bit error rateIssued on: 08/11/1992 Inventor: Wagner, Jr., et al.5467341, Apparatus and method for alerting computer users in a wireless LAN of a service area transition Issued on: 11/14/1995 Inventor: Matsukane, et al.5570373, Method and apparatus for testing a radio in a base station without using a radio test unit Issued on: 10/29/1996 Inventor: Wing5627837, Apparatus and method for suppressing protection switching in a digital communication system in the event of an error burst Issued on: 05/06/1997 Inventor: Gillett5724362, Apparatus and method employing a window reset for excessive bit error rate alarm detection and clearing Issued on: 03/03/1998 Inventor: Lau5764651, Bit error rate detection system Issued on: 06/09/1998 Inventor: Bullock, et al.5867096, Method for signal degradation alarm detection and cancellation in synchronous digital microwave system Issued on: 02/02/1999 Inventor: Park6310911Method of detecting signal degradation fault conditions within SONET and SDH signals Issued on: 10/30/2001 Inventor: Burke, et al. International ClassH04B 7208 |
