FIBER RECOGNITION METHOD, OPTICAL LINE TERMINAL, AND RECOGNITION SYSTEM

• US 20150288446A1
• Filed: 05/06/2014
• Published: 10/08/2015
• Est. Priority Date: 11/08/2011
• 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: YIN, Jinrong, Yang, Sulin, Li, Shu
• Granted Patent: US 10,454,575 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 6/3895 identification of connection, e.g. right plug to the right socket or full engagement of the mating parts keying element on the plug or adapter G02B6/3831; keying element on the ferrule G02B6/3851; keying element for electrical connection H01R13/64
• CPC Class Codes: G02B 6/4452 Distribution frames
• CPC Class Codes: H04B 10/0775 Performance monitoring and measurement of transmission parameters
• CPC Class Codes: H04J 14/0272 Transmission of OAMP information
• CPC Class Codes: H04Q 11/0067 Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
• CPC Class Codes: H04Q 2011/0079 Operation or maintenance aspects

Abstract

Embodiments of the present invention disclose a fiber recognition method, an optical line terminal, and a system. The method includes: obtaining, by an optical line terminal, identification information of a fiber connected to an optical line terminal and to be recognized; generating, by the optical line terminal, a data frame that includes the identification information of the fiber to be recognized; transmitting, by the optical line terminal, optical signals that are generated according to the data frame to the fiber to be recognized, so as to make a fiber recognition instrument implement identification for the fiber to be recognized. The present invention can implement fiber recognition easily and conveniently. When a new ONU user is added to a distributed network, service interruption can also be avoided for a user who is normally using a service, and the cost is low.

Claims

1. A fiber recognition method, comprising:

obtaining identification information of a fiber connected to an optical line terminal and to be recognized;

generating a data frame that comprises the identification information of the fiber to be recognized; and

transmitting optical signals that are generated according to the data frame to the fiber to be recognized, wherein the identification information of the fiber to be recognized, which is carried in the data frame, is used to instruct a fiber recognition apparatus to recognize a fiber that transmits the optical signals.

2. The method according to claim 1, wherein the identification information of the fiber to be recognized comprises any one of or any combination of the following:

port information of the optical line terminal connected to the fiber to be recognized, service provider information, a protocol type of an optical line terminal port, transmit optical power of the optical line terminal port, a power budget level of the optical line terminal port, whether the optical line terminal port is an active port or a standby port, whether the optical line terminal port is connected to a remote radio unit, transmit optical power of the remote radio unit if the optical line terminal port is connected to the remote radio unit, a line coding scheme used by the optical line terminal port, and optical node transmitting wavelength information received by the optical line terminal.

3. The method according to claim 1, wherein the generating a data frame that comprises the identification information of the fiber to be recognized comprises:

obtaining coding scheme information, wherein the coding scheme information is used to indicate a coding scheme of the data frame that comprises the identification information of the fiber to be recognized; and

according to the obtained coding scheme information, generating the data frame that comprises the identification information of the fiber to be recognized, wherein

the coding scheme information comprises any one of the following;

pseudo-noise sequence combination coding scheme information, Golay complementary sequence combination coding scheme information, and sine signal combination coding scheme information.

4. The method according to claim 3, wherein the data frame comprises:

a frame header part used to identify a start position of the data frame, and a content part that comprises the identification information of the fiber to be recognized.

5. The method according to claim 1, wherein the transmitting optical signals that are generated according to the data frame to the fiber to be recognized comprises:

obtaining transmitting indication information, wherein the transmitting indication information is used to indicate a transmitting mode of transmitting the optical signals that are generated according to the data frame; and

according to the obtained transmitting indication information, transmitting the optical signals that are generated according to the data frame to the fiber to be recognized, wherein

the transmitting indication information comprises singly transmitting any one of the following;

indication information, periodical burst transmitting indication information, and periodical continuous transmitting indication information.

6. The method according to claim 1, wherein the identifying, by the fiber recognition instrument, the fiber to be recognized comprises:

determining, by the fiber recognition instrument by analyzing and processing an original sequence corresponding to a received optical signal, a start position of the original sequence, and recovering information carried in the original sequence whose start position is determined; and

judging whether the recovered information is the same as preset identification information of the fiber to be recognized, and, if yes, determining that a fiber that transmits the optical signal is the fiber to be recognized;

or, displaying the recovered information directly.

7. The method according to claim 1, wherein:

in an operation of transmitting optical signals that are generated according to the data frame to the fiber to be recognized, so as to make a fiber recognition instrument implement identification for the fiber to be recognized, the optical signals are transmitted, by using a periodical burst transmitting mode or a periodical continuous transmitting mode, to the fiber to be recognized, and the fiber recognition instrument receives the optical signals continuously, recovers multiple data frames, performs an averaging operation for the multiple data frames to obtain the identification information carried in the received optical signals, and compares and judges the identification information carried in the received optical signals with the preset identification information of the fiber to be recognized, so as to implement identification for the fiber to be recognized.

8. The method according to claim 1, wherein:

after the fiber recognition instrument implements the identification for the fiber to be recognized, the method further comprises;

measuring, by the fiber recognition instrument, energy of the optical signals transmitted on the fiber to be recognized.

9. An optical line terminal, comprising:

an obtaining module, configured to obtain identification information of a fiber connected to an optical line terminal and to be recognized;

a signal generating module, configured to generate a data frame that comprises the identification information of the fiber to be recognized, wherein the identification information is obtained by the obtaining module; and

a signal transmitting module, configured to transmit optical signals that are generated according to the data frame to the fiber to be recognized, so as to make a fiber recognition instrument implement identification for the fiber to be recognized, wherein the data frame is generated by the signal generating module.

10. The optical line terminal according to claim 9, wherein:

the obtaining module is further configured to obtain coding scheme information, wherein the coding scheme information is used to indicate a coding scheme of the data frame that comprises the identification information of the fiber to be recognized, and the coding scheme information comprises any one of the following;

PN sequence combination coding scheme information, Golay complementary sequence combination coding scheme information, and sine signal combination coding scheme information; and

the signal generating module is configured to;

according to the coding scheme information obtained by the obtaining module, generate the data frame that comprises the identification information of the fiber to be recognized.

11. The optical line terminal according to claim 10, wherein:

the obtaining module is further configured to obtain transmitting indication information, wherein the transmitting indication information is used to indicate a transmitting mode of transmitting the optical signals that are generated according to the data frame, wherein the transmitting indication information comprises singly transmitting any one of the following;

indication information, periodical burst transmitting indication information, and periodical continuous transmitting indication information; and

the signal transmitting module is configured to;

according to the transmitting mode indicated in the indication information obtained by the obtaining module, transmit the optical signals that are generated according to the data frame to the fiber to be recognized.

12. The optical line terminal according to claim 9, wherein the optical line terminal comprises a user interface that is used to obtain coding scheme information and transmitting indication information that are set by a user.

13. A fiber recognition instrument, comprising:

a signal receiving module, configured to receive optical signals; and

a signal processing module, configured to analyze and process the optical signals received by the signal receiving module, recover information carried in the optical signals, and, according to the recovered information, implement identification for a fiber to be recognized.

14. The fiber recognition instrument according to claim 13, wherein the signal processing module comprises:

a first calculating unit, configured to analyze and process an original sequence corresponding to a received optical signal, and determine a start position of the original sequence;

a second calculating unit, configured to recover information carried in the original sequence whose start position is determined; and

a judging unit, configured to judge whether the recovered information is the same as identification information of the fiber to be recognized, and, if yes, determine that a fiber that transmits the optical signal is the fiber to be recognized.

15. The fiber recognition instrument according to claim 13, further comprising:

a displaying module, configured to display the information recovered by the signal processing module.

16. A fiber recognition system, comprising an optical line terminal and a fiber recognition instrument, wherein a fiber to be recognized is connected to the optical line terminal, wherein:

the optical line terminal is configured to obtain identification information of the fiber to be recognized, and generate a data frame that comprises the obtained identification information of the fiber to be recognized, and transmit optical signals that are generated according to the data frame to the fiber to be recognized; and

the fiber recognition instrument is configured to;

according to the received optical signals, implement identification for the fiber to be recognized.

17. The system according to claim 16, wherein:

the optical line terminal transmits, by using a periodical burst transmitting mode or a periodical continuous transmitting mode, the optical signals that are generated according to the data frame, to the fiber to be recognized; and

the fiber recognition instrument receives the optical signals continuously, recovers multiple data frames, performs an averaging operation for the multiple data frames to obtain the identification information carried in the received optical signals, and compares and judges the identification information carried in the received optical signals with preset identification information of the fiber to be recognized, so as to implement identification for the fiber to be recognized.

18. A fiber recognition system, comprising:

an optical line terminal coupled to a fiber, and configured to obtain identification information of the fiber, to generate a data frame comprising the obtained identification information, and to transmit optical signals generated according to the data frame to the fiber; and

a fiber recognition instrument configured to identify the fiber according to received optical signals.