Fiber link recognition method, device, and system

• US 9,774,390 B2
• Filed: 02/22/2016
• Issued: 09/26/2017
• Est. Priority Date: 10/25/2013
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhou, Jinlin, Wang, Shijun, Zhao, Jun, Kang, Jingran, Liu, Xishe
• Primary Examiner(s): Bocure, Tesfaldet
• Application Number:
  US15/049,531
• Publication Number:
  US 20160173194A1
• Time in Patent Office: 582 Days
• CPC Class Codes: H04B 10/071 using a reflected signal, e.g. using optical time domain reflectometers [OTDR]

Abstract

A fiber link recognition method, device, and system, to recognize different fiber links where the method includes sending, by a link recognition device, a first test optical signal, receiving a second test optical signal that is returned after the first test optical signal is sent to a connection port of a first optical node, acquiring a reflection peak of the second test optical signal on a fiber link, determining a port identifier of the connection port of the first optical node according to the reflection peak of the second test optical signal on the fiber link, and recognizing, the fiber link corresponding to the second test optical signal that is returned by the connection port of the first optical node. The method embodiment is used to recognize a fiber link.

Claims

1. A fiber link recognition method, comprising:

sending, by a link recognition device, a first test optical signal;

receiving a second test optical signal that is returned after the first test optical signal is sent to a connection port of a first optical node;

acquiring a reflection peak of the second test optical signal on a fiber link;

determining a port identifier of the connection port of the first optical node according to the reflection peak of the second test optical signal on the fiber link, wherein the reflection peak of the second test optical signal on the fiber link corresponds to the port identifier of the connection port of the first optical node; and

recognizing, according to the port identifier of the connection port of the first optical node, the fiber link corresponding to the second test optical signal that is returned by the connection port of the first optical node.

2. The method according to claim 1, wherein before sending, by the link recognition device, the first test optical signal, the method further comprises:

acquiring the port identifier of the connection port of the first optical node;

sending the first test optical signal to the connection port of the first optical node according to the port identifier;

receiving the second test optical signal that is returned after the first test optical signal is transmitted to the connection port of the first optical node through the fiber link;

acquiring the reflection peak of the second test optical signal on the fiber link; and

establishing a correspondence between the port identifier and the reflection peak of the second test optical signal on the fiber link.

3. The method according to claim 2, wherein determining the port identifier of the connection port of the first optical node according to the reflection peak of the second test optical signal on the fiber link comprises determining, according to the correspondence between the port identifier and the reflection peak, the port identifier corresponding to the reflection peak.

4. The method according to claim 2, further comprising:

acquiring characteristic information of the first optical node;

determining the correspondence between the port identifier and the reflection peak of the second test optical signal on the fiber link; and

establishing a correspondence between the characteristic information of the first optical node and the port identifier, and the reflection peak of the second test optical signal on the fiber link.

5. A link recognition device, comprising:

a processor; and

a non-transitory computer readable medium connected to the processor,

wherein the processor is configured to;

send a first test optical signal;

receive a second test optical signal that is returned after the first test optical signal is sent to a connection port of a first optical node;

acquire a reflection peak of the second test optical signal on a fiber link;

determine a port identifier of the connection port of the first optical node according to the reflection peak of the second test optical signal on the fiber link; and

recognize, according to the port identifier of the connection port of the first optical node, the fiber link corresponding to the second test optical signal that is returned by the connection port of the first optical node, wherein the reflection peak of the second test optical signal on the fiber link corresponds to the port identifier of the connection port of the first optical node.

6. The device according to claim 5, wherein the processor is further configured to:

acquire the port identifier of the connection port of the first optical node;

send the first test optical signal to the connection port of the first optical node according to the port identifier;

receive the second test optical signal that is returned after the first test optical signal is transmitted to the connection port of the first optical node through the fiber link;

acquire the reflection peak of the second test optical signal on the fiber link; and

establish a correspondence between the port identifier and the reflection peak of the second test optical signal on the fiber link.

7. The device according to claim 6, wherein the processor is further configured to determine, according to the correspondence between the port identifier and the reflection peak, the port identifier corresponding to the reflection peak.

8. The device according to claim 6, wherein the processor is further configured to:

acquire characteristic information of the first optical node; and

establish a correspondence between the characteristic information of the first optical node and the port identifier, and the reflection peak of the second test optical signal on the fiber link.

9. A fiber link recognition system, comprising:

a link recognition device;

a first optical node; and

a test device,

wherein the link recognition device, the optical node and the test device are connected to each other,

wherein the first optical node comprises a connection port,

wherein the link recognition device is configured to;

send a first test optical signal;

receive a second test optical signal that is returned after the first test optical signal is sent to the connection port of the first optical node;

acquire a reflection peak of the second test optical signal on a fiber link;

determine a port identifier of the connection port of the first optical node according to the reflection peak of the second test optical signal on the fiber link, wherein the reflection peak of the second test optical signal on the fiber link corresponds to the port identifier of the connection port of the first optical node; and

recognize the fiber link corresponding to the second test optical signal that is returned by the connection port of the first optical node,

wherein the connection port is configured to return the second test optical signal after the first test optical signal sent by the link recognition device is received, and wherein the test device is configured to;

acquire the port identifier of the connection port; and

send the port identifier of the connection port to the link recognition device.