Method and apparatus for monitoring bit-error rate

• US 7,555,685 B2
• Filed: 11/21/2006
• Issued: 06/30/2009
• Est. Priority Date: 11/21/2006
• Status: Active Grant

• Current Assignee: Verizon Patent and Licensing Incorporated (Verizon Communications Inc.)
• Original Assignee: Verizon Services Corporation (Verizon Communications Inc.), Verizon Services Organization Incorporated (Verizon Communications Inc.)
• Inventors: Sylvester, James E., Lee, Stanley Y., Kanaan, Muzaffer, Laparidis, Alexander
• Primary Examiner(s): TU, CHRISTINE TRINH LE
• Application Number:
  US11/602,349
• Publication Number:
  US 20080120524A1
• Time in Patent Office: 952 Days
• Field of Search: None
• US Class Current: 714/704
• CPC Class Codes: H04L 43/06 Generation of reports
• CPC Class Codes: H04L 43/0847 Transmission error
• CPC Class Codes: H04L 43/10 Active monitoring, e.g. heartbeat, ping or trace-route
• CPC Class Codes: H04L 43/50 Testing arrangements

Abstract

A test set for evaluating network performance is described, and which may include an output device, a processor, a power supply, a memory unit, and a control terminal. The test set may be configured to receive a user-entered selection of one of a plurality of different bit-error rate profiles and generate a test signal exhibiting the selected bit-error rate profile. The test set may also supply the test signal exhibiting the selected bit-error rate profile to a network under test. In addition, the test set may receive as an input, an output from the network under test. The output may include the test signal exhibiting the selected bit-error rate. The test set may evaluate the received test signal and determine the performance of the network in response to the received test signal exhibiting the bit-error rate. The test set may then output the results of the evaluation.

Claims

1. A method comprising:

receiving a selection of one of a plurality of different profiles, the profiles representative of numbers of bit errors as functions of time;

generating a test signal exhibiting the selected profile;

supplying the test signal exhibiting the selected profile to a network under test;

receiving performance information for the supplied test signal from the network under test;

evaluating the received performance information; and

outputting results of the evaluation.

2. The method according to claim 1, wherein receiving a selection of one of a plurality of different profiles comprises:

receiving a selection to select the profile from a plurality of stored profiles.

3. The method according to claim 1, wherein receiving a selection of one of a plurality of different profiles comprises:

receiving an input to select values for the number of bit errors and a time interval.

4. The method according to claim 1, wherein receiving, a selection of one of a plurality of different profiles comprises:

receiving an input to decide whether to select the profile from a plurality of stored profiles or to select values for the number of bit errors and a time interval; and

receiving one of a selection to select the profile from a plurality of stored profiles or an input to select values for the number of bit errors and a time interval.

5. The method according to claim 1, wherein the network under test is any one of an optical transport network, an electrical transport network, and a wireless transport network.

6. The method according to claim 1, wherein results of the evaluation indicate the performance of the network under test in response to the supplied test signal including the selected profile.

7. The method according to claim 1, wherein results of the evaluation indicate the performance of an error correction algorithm in response to the supplied test signal exhibiting the selected profile.

8. The method according to claim 1, wherein the results of the evaluation indicate the performance of a forward error correction algorithm in response to the supplied test signal including the selected profile.

9. An apparatus comprising:

a first input configured to receive a user-entered selection of one of a plurality of different profiles, the profiles representative of numbers of bit errors as functions of time;

a first component configured to generate a test signal exhibiting the selected profile;

a second component configured to supply the test signal including the selected profile to a network under test;

a second input configured to receive network performance information from an output of the network under test;

a processor configured to analyze and evaluate the received network performance information; and

an output configured to output results of the evaluation.

10. The apparatus according to claim 9, wherein the one of a plurality of different profiles is selected from:

a plurality of stored profiles.

11. The apparatus according to claim 9, wherein the one of a plurality of different profiles is selected by:

inputting values for the number of bit errors and a time interval.

12. The apparatus according to claim 9, wherein the one of a plurality of different profiles is selected by receiving a choice of:

from a plurality of stored profiles;

or

by inputting values for the number of bit errors and a time interval; and

receiving the selection for the stored profile, or the selection values for the number of bit errors and the time interval.

13. The apparatus according to claim 9, wherein results of the evaluation indicate the performance of the network under test in response to the supplied test signal exhibiting the selected profile.

14. The apparatus according to claim 9, wherein results of the evaluation indicate the performance of an error correction algorithm in response to the supplied test signal exhibiting the selected profile.

15. The apparatus according to claim 9, wherein results of the evaluation indicate the performance of an forward error correction algorithm in response to the supplied test signal exhibiting the selected profile.

16. A method comprising:

receiving a user-entered selection of one of a plurality of different profiles, the profiles representative of numbers of bit errors as functions of time;

generating a test signal exhibiting the selected profile;

supplying the test signal exhibiting the selected profile to a network under test;

receiving the test signal from the network under test;

determining whether the received test signal exhibits numbers of bit errors exceeding a predetermined threshold;

storing parameters of the selected profile and an indication of the determination;

selecting from the plurality of different profiles, if the determination indicates that numbers of bit errors from the selected profile exceed the predetermined threshold, a profile different from the previously selected profile; and

repeating the supplying, receiving, determining, storing, and selecting steps until numbers of bit errors from the most recently selected profile do not exceed the predetermined threshold.

17. The method according to claim.16, wherein receiving a user-entered selection of one of a plurality of different profiles comprises:

receiving a selection to select the profile from a plurality of stored profiles.

18. The method according to claim 16, wherein receiving a user-entered selection of one of a plurality of different profiles comprises:

receiving an input to select values for the number of bit errors and a time interval.

19. The method according to claim 16, wherein receiving a user-entered selection of one of a plurality of different profiles comprises:

receiving an input to decide whether to select the profile from a plurality of stored profiles or to select values for the number of bit errors and a time interval; and

receiving one of a selection to select the profile from a plurality of stored profiles or an input to select values for the number of bit errors and a time interval.

20. An apparatus comprising,

a first input configured to receive a user-entered selection of one of a plurality of different profiles, the profiles representative of numbers of bit errors as functions of time;

a first component configured to generate a test signal exhibiting the selected profile;

a second component configured to supply the test signal exhibiting the selected profile to a network under test;

a second input configured to receive network performance information from an output of the network under test;

a determining component configured to determine whether the received test signal exhibits numbers of bit errors exceeding a predetermined threshold;

a memory component configured to store, as results, parameters of the selected profile and an indication of the determination;

a selecting component configured to select from the plurality of different profiles, if the determination indicates that numbers of bit errors from the selected profile exceed the predetermined threshold, a profile different from the previously selected profile;

a controller configured to determine when numbers of bit errors from the most recently selected profile do not exceed the predetermined threshold; and

an output component configured to output the stored results.

21. The apparatus according to claim 20, wherein the one of a plurality of different profiles is selected from:

a plurality of stored profiles.

22. The apparatus according to claim 21, wherein receiving a user-entered selection of one of a plurality of different profiles comprises:

receiving an input to select values for the number of bit errors and a time interval.