Apparatus for remotely determining fault of subscriber terminals and method thereof
First Claim
1. An apparatus for determining a remote fault of subscriber terminals comprising:
- a frequency analysis unit recognizing a fault occurrence of a subscriber terminal from an upstream signal and analyzing the frequency spectrum of the upstream signal; and
a fault determination unit selecting a specific frequency corresponding to the shape of the spectrum, determining a diagnosis signal corresponding to the specific frequency, transmitting a message requesting to upward transmit the diagnosis signal to each ONT, finding a peak frequency from the frequency spectrum of the diagnosis signal transmitted by the ONT, determining a fault of the subscriber terminal by comparing the peak frequency with the selected specific frequency.
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Accused Products
Abstract
An apparatus for remotely determining a fault of subscriber terminals and a method thereof, and more specifically, an apparatus by which in a passive optical network (PON) system, a central office determines a remote fault of subscriber terminals, and a method thereof are provided. The apparatus for determining a remote fault of subscriber terminals includes: a frequency analysis unit recognizing a fault occurrence of a subscriber terminal from an upstream signal and analyzing the frequency spectrum of the upstream signal; and a fault determination unit selecting a specific frequency corresponding to the shape of the spectrum, determining a diagnosis signal corresponding to the specific frequency, transmitting a message requesting to upward transmit the diagnosis signal to each ONT, finding a peak frequency from the frequency spectrum of the diagnosis signal transmitted by the ONT, determining a fault of the subscriber terminal by comparing the peak frequency with the selected specific frequency.
33 Citations
4 Claims
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1. An apparatus for determining a remote fault of subscriber terminals comprising:
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a frequency analysis unit recognizing a fault occurrence of a subscriber terminal from an upstream signal and analyzing the frequency spectrum of the upstream signal; and
a fault determination unit selecting a specific frequency corresponding to the shape of the spectrum, determining a diagnosis signal corresponding to the specific frequency, transmitting a message requesting to upward transmit the diagnosis signal to each ONT, finding a peak frequency from the frequency spectrum of the diagnosis signal transmitted by the ONT, determining a fault of the subscriber terminal by comparing the peak frequency with the selected specific frequency. - View Dependent Claims (2)
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3. A method for determining a remote fault of subscriber terminals comprising:
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recognizing a fault occurrence of a subscriber terminal from an upstream signal;
analyzing the frequency spectrum of the upstream signal;
selecting a specific frequency corresponding to the shape of the spectrum;
determining a diagnosis signal corresponding to the specific frequency;
transmitting a message requesting to upward transmit the diagnosis signal to each ONT;
finding a peak frequency from the frequency spectrum of the diagnosis signal transmitted by the ONT; and
determining a fault of the subscriber terminal by comparing the peak frequency with the selected specific frequency. - View Dependent Claims (4)
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Specification