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1. 发明授权

US06700873B1 Apparatus for and method of detecting operation administration and maintenance (OAM) cell 有权
标题翻译：检测手术管理和维护（OAM）细胞的装置和方法
公开(公告)号：US06700873B1
公开(公告)日：2004-03-02
申请号：US09610386
申请日：2000-07-05
申请人： Toshihiko Sugaya , Yumi Tanaka
发明人： Toshihiko Sugaya , Yumi Tanaka
IPC分类号： G01R3108
CPC分类号： H04L12/5601 , H04L2012/5625 , H04L2012/5628
摘要： In an OAM detecting apparatus and an OAM detecting method, normal lines are not adversary influenced at occurrence of failure and one failed position can be recognized at occurrence of a double failure. A timer counter comparator generates a discard signal when a timer counter value measuring a predetermined time equal to or less than one second after reception of an OAM cell is less than a reference value. A failed position display and comparator compares, when a failed position display change flag is “0”, failed position display information of a new OAM cell received with failed position display information previously stored, and generates a discard signal when the comparison results in mismatching. When the flag is “1”, the display and comparator compares the failed position display information of a new OAM cell received with the failed position display information previously stored, and does not generates a discard signal even when the comparison results in mismatching. The display and comparator updates the failed position display information previously stored to the failed position display information of the new OAM cell and sets the flag to “0”.
摘要翻译：在OAM检测装置和OAM检测方法中，在发生故障时，法线不会受到对手的影响，在发生双重故障时可以识别出一个失败的位置。当在接收到OAM小区之后测量等于或小于1秒的预定时间的定时器计数器值小于参考值时，定时器计数器比较器产生丢弃信号。故障位置显示和比较器比较当故障位置显示改变标志为“0”时，先前存储的故障位置显示信息接收的新的OAM单元的故障位置显示信息，并且当比较导致不匹配时产生丢弃信号。当标志为“1”时，显示和比较器将接收到的新的OAM单元的故障位置显示信息与先前存储的故障位置显示信息进行比较，即使比较导致不匹配，也不产生丢弃信号。显示器和比较器更新先前存储到新的OAM单元的故障位置显示信息的故障位置显示信息，并将该标志设置为“0”。

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