METHOD FOR MEASURING FIBER LENGTH, OPTICAL LINE TERMINAL AND OPTICAL NETWORK SYSTEM
First Claim
1. A method for measuring a fiber length between a first optical network device and a second optical network device, comprising:
- sending a first message from the first optical network device to the second optical network device;
receiving a response message from the second optical network device;
determining a time duration between sending the first message and receiving the response message;
obtaining an actual response time of the second optical network device and a waiting time assigned to the second optical network device; and
determining the fiber length based on the time duration, the waiting time, and the actual response time.
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Accused Products
Abstract
A method for measuring fiber length, an optical line terminal and an optical network system. The method for measuring fiber length according to the embodiment of the present invention includes the following steps: Sending the first message to an optical network device at the subscriber side; —Receiving the second message, which is a response returned by the optical network device at the subscriber side to the first message; —Determining the duration between sending the first message and receiving the second message; Calculating the length of the fiber to the optical network device at the subscriber side according to the above-mentioned duration and the information related to the processing delay of the optical network device at the subscriber side, wherein the information related to the processing delay of the optical network device at the subscriber side includes the actual response time of the optical network device at the subscriber side.
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Citations
21 Claims
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1. A method for measuring a fiber length between a first optical network device and a second optical network device, comprising:
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sending a first message from the first optical network device to the second optical network device; receiving a response message from the second optical network device; determining a time duration between sending the first message and receiving the response message; obtaining an actual response time of the second optical network device and a waiting time assigned to the second optical network device; and determining the fiber length based on the time duration, the waiting time, and the actual response time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An optical line terminal, comprising:
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a sending unit that is adapted to send a first message to an optical network device; a receive unit that is adapted to receive a response message from the optical network device; a time counting unit that is adapted to determine a duration between sending the first message and receiving the response message; a response time acquisition unit that is adapted to obtain a actual response time of the optical network device; and a computation unit that is adapted to calculate a fiber length between the optical line terminal and the optical network device according to the duration and the actual response time of the optical network device. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An optical network device, comprising:
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a receiving unit that is adapted to receive a first message sent from an optical line terminal; a response time acquisition unit that is adapted to obtain an actual response time of the optical network device; and a sending unit that is adapted to send a second message carrying the actual response time to the optical line terminal. - View Dependent Claims (18, 19, 20)
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21. A computer readable media, comprising logic encoded in the computer readable media, the logic when executed operable to:
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send a first message to the second optical network device; receive a response message from the second optical network device; determine a duration between sending the first message and receiving the response message; obtain a actual response time of the second optical network device and a waiting time assigned to the second optical network device; and determine the fiber length according to the duration, the waiting time, the actual response time.
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Specification