发明申请
- 专利标题: Passive optical network system and fault determination method
- 专利标题(中): 无源光网络系统和故障确定方法
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申请号: US12379634申请日: 2009-02-26
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公开(公告)号: US20100067901A1公开(公告)日: 2010-03-18
- 发明人: Masahiko Mizutani , Yusuke Yajima , Yoshihiro Ashi
- 申请人: Masahiko Mizutani , Yusuke Yajima , Yoshihiro Ashi
- 优先权: JP2008-234188 20080912
- 主分类号: H04B10/08
- IPC分类号: H04B10/08 ; H04J14/02
摘要:
In a passive optical network system, a parent station includes a reception circuit that receives an optical signal from each of child stations using a threshold used to identify if the optical signal is 0 or 1; a bandwidth setting unit that determines a time at which each child station sends an optical signal; a storage unit that stores thresholds and intensities of optical signals received from the child stations; and a control unit that sets a threshold, stored corresponding to a sending time, in,the reception circuit to control a reception of an optical signal. The control unit has a function that compares an intensity of a signal received from each child station at an optical signal reception time with information stored in the storage unit to detect and determine a fault in the child station or in the optical fiber connected to the child station.