CA2394491A1 - Diagnostic methods and systems for multicarrier modems - Google Patents

Diagnostic methods and systems for multicarrier modems

Info

Publication number
CA2394491A1
CA2394491A1 CA002394491A CA2394491A CA2394491A1 CA 2394491 A1 CA2394491 A1 CA 2394491A1 CA 002394491 A CA002394491 A CA 002394491A CA 2394491 A CA2394491 A CA 2394491A CA 2394491 A1 CA2394491 A1 CA 2394491A1
Authority
CA
Canada
Prior art keywords
diagnostic
modem
message
link message
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002394491A
Other languages
French (fr)
Other versions
CA2394491C (en
Inventor
David M. Krinsky
Robert Edmund Pizzano Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TQ Delta LLC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
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Application filed by Individual filed Critical Individual
Priority to CA2726826A priority Critical patent/CA2726826C/en
Publication of CA2394491A1 publication Critical patent/CA2394491A1/en
Application granted granted Critical
Publication of CA2394491C publication Critical patent/CA2394491C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/302—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
    • H04M3/304—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using xDSL modems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/245—Testing correct operation by using the properties of transmission codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/345—Modifications of the signal space to allow the transmission of additional information
    • H04L27/3461—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1438—Negotiation of transmission parameters prior to communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2209—Arrangements for supervision, monitoring or testing for lines also used for data transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2227—Quality of service monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop

Abstract

Upon detection of a trigger, such as the exceeding of an error threshold or the direction of a user, a diagnostic link system enters a diagnostic information transmission mode. This diagnostic information transmission mode allows for two modems to exchange diagnostic and/or test information that may not otherwise be exchangeable during normal communication. The diagnostic information transmission mode is initiated by transmitting an initiate diagnostic link mode message to a receiving modem accompanied by a cyclic redundancy check (CRC). The receiving modem determines, based on the CRC, if a robust communications channel is present. If a robust communications channel is present, the two modems can initiate exchange of the diagnostic and/or test information. Otherwise, the transmission power of the transmitting modem is increased and the initiate diagnostic link mode message re-transmitted to the receiving modem until the CRC is determined to be correct.

Claims (43)

1. A diagnostic link system for communicating data between modems using multicarrier modulation comprising:
an initiate diagnostic mode trigger that instructs a transmitting modem to forward an initiate diagnostic mode message to a receiving modem;
a message determination device that determines a diagnostic link message; and a receiving modem diagnostic device that receives the diagnostic link message and determines the accuracy of the diagnostic link message.
2. The system of claim 1, further comprising a power control device that increases a transmission power of the diagnostic link message if the received diagnostic link message is inaccurate.
3. The system of claim 1, wherein the diagnostic link message is re-transmitted a predetermined number of times.
4. The system of claim 1, wherein the diagnostic link message comprises at least one of test and diagnostic information.
5. The system of claim 4, wherein the diagnostic link message comprises at least one of a version number of a diagnostic link mode, a length of the diagnostic information, a communications standard, a chipset type, one or more vendor identifications, an ATU version number, a time domain received reverb signal, a frequency domain reverb signal, an amplifier setting, a CO transmitter power spectral density, a frequency domain received idle channel, a signal to noise ratio, bits and gain information, and upstream and downstream transmission rates.
6. The system of claim 1, wherein the accuracy is determined based on at least one of an error detecting scheme, a bit error detection and a cyclic redundancy check.
7. The system of claim 1, wherein the trigger is based on at least one of an initialization failure, a bit rate failure, a CRC error in an initialization message, a CRC error during a normal steady state transmission mode, a forward error correction error, a user request, a central office modem request and a remote terminal modem request.
8. The system of claim 1, wherein the transmitting modem completes a portion of a modem initialization sequence before forwarding the initiate diagnostic mode message.
9. The system of claim 1, wherein the transmitting modem is at least one of a central office modem and a remote terminal modem.
10. The system of claim 1, wherein the receiving modem is at least one of a central office modem and a remote terminal modem.
11. A method for communicating data between modems using multicarrier modulation comprising:
instructing a transmitting modem to forward an initiate diagnostic mode message to a receiving modem;
determining a diagnostic link message;
transmitting the diagnostic link message; and determining the accuracy of the transmitted diagnostic link message.
12. The method of claim 11, further comprising increasing a transmission power of the diagnostic link message if a received diagnostic link message is inaccurate.
13. The method of claim 11, further comprising transmitting the diagnostic link message a predetermined number of times.
14. The method of claim 11, wherein the diagnostic link message comprises at least one of test and diagnostic information.
15. The method of claim 14, wherein the diagnostic link message comprises at least one of a version number of a diagnostic link mode, a length of the diagnostic information, a communications standard, a chipset type, one or more vendor identifications, an ATU version number, a time domain received reverb signal, a frequency domain reverb signal, an amplifier setting, a CO transmitter power spectral density, a frequency domain received idle channel, a signal to noise ratio, bits and gain information, and upstream and downstream transmission rates.
16. The method of claim 11, wherein the accuracy is determined based on at least one of an error detecting scheme, a bit error detection and a cyclic redundancy check.
17. The method of claim 11, wherein the initiate diagnostic mode message is based on at least one of an initialization failure, a bit rate failure, a CRC
error in an initialization message, a CRC error during the normal steady state transmission mode, a forward error correction error, a user request, a central office modem request and a remote terminal modem request.
18. The method of claim 11, further comprising completing a portion of a modem initialization sequence before forwarding the initiate diagnostic mode message.
19. The method of claim 11, wherein a transmitting modem is at least one of a central office modem and a remote terminal modem.
20. The method of claim 11, wherein a receiving modem is at least one of a central office modem and a remote terminal modem.
21. A method for communicating data between modems using multicarrier modulation comprising:
receiving an initiate diagnostic mode message;
determining a diagnostic link message;
transmitting the diagnostic link message; and at least one of increasing a transmission power of the diagnostic link message if the received diagnostic link message is inaccurate and re-transmitting the diagnostic link message a predetermined number of times.
22. The method of claim 21, wherein the diagnostic link message comprises at least one of test and diagnostic information.
23. The method of claim 22, wherein the diagnostic link message comprises at least one of a version number of a diagnostic link mode, a length of the diagnostic information, a communications standard, a chipset type, one or more vendor identifications, an ATU version number, a time domain received reverb signal, a frequency domain reverb signal, an amplifier setting, a CO transmitter power spectral density, a frequency domain received idle channel, a signal to noise ratio, bits and gain information, and upstream and downstream transmission rates.
24. The method of claim 21, wherein the accuracy is determined based on at least one of an error detecting scheme, a bit error detection and a cyclic redundancy check.
25. The method of claim 21, wherein the initiate diagnostic mode message is based on at least one of an initialization failure, a bit rate failure, a CRC
error in an initialization message, a CRC error during the normal steady state transmission mode, a forward error correction error, a user request, a central office modem request and a remote terminal modem request.
26. The method of claim 21, further comprising completing a portion of a modem initialization sequence before forwarding the initiate diagnostic mode message.
27. The method of claim 21, wherein a transmitting modem is at least one of a central office modem and a remote terminal modem.
28. The method of claim 21, wherein a receiving modem is at least one of a central office modem and a remote terminal modem.
29. A method for communicating data between modems using multicarrier modulation comprising:
receiving an initiate diagnostic mode message;
determining the accuracy of a received diagnostic link message; and receiving at least one of an increased transmission power diagnostic link message if the received diagnostic link message is inaccurate and a re-transmission of a predetermined number of the diagnostic link messages.
30. The method of claim 29, wherein the diagnostic link message comprises at least one of test and diagnostic information.
31. The method of claim 30, wherein the received diagnostic link message comprises at least one of a version number of a diagnostic link mode, a length of the diagnostic information, a communications standard, a chipset type, one or more vendor identifications, an ATU version number, a time domain received reverb signal, a frequency domain reverb signal, an amplifier setting, a CO transmitter power spectral density, a frequency domain received idle channel, a signal to noise ratio, bits and gain information, and upstream and downstream transmission rates.
32. The method of claim 29, wherein the accuracy is determined based on at least one of an error detecting scheme, a bit error detection and a cyclic redundancy check.
33. The method of claim 29, wherein the initiate diagnostic mode message is based on at least one of an initialization failure, a bit rate failure, a CRC
error in an initialization message, a CRC error during the normal steady state transmission mode, a forward error correction error, a user request, a central office modem request and a remote terminal modem request.
34. The method of claim 29, further comprising completing a portion of a modem initialization sequence before receiving the initiate diagnostic mode message.
35. An information storage media comprising information for communicating data between modems using multicarrier modulation comprising:
information that instructs a transmitting modem to forward an initiate diagnostic mode message to a receiving modem;
information that determines a diagnostic link message;
information that transmits the diagnostic link message; and information that determines the accuracy of the transmitted diagnostic link message.
36. An information storage media comprising information for communicating data between modems using multicarrier modulation comprising:
information that receives an initiate diagnostic mode message;
information that determines a diagnostic link message;
information that transmits the diagnostic link message; and information that at least one of increases a transmission power of the diagnostic link message if the received diagnostic link message is inaccurate and re-transmits the diagnostic link message a predetermined number of times.
37. An information storage media comprising information for communicating data between modems using multicarrier modulation comprising:
information that receives an initiate diagnostic mode message;
information that determines the accuracy of a received diagnostic link message; and information that receives at least one of an increased transmission power diagnostic link message if the received diagnostic link message is inaccurate and a re-transmission of a predetermined number of the diagnostic link messages.
38. A method for communicating diagnostic information between DSL modems using multicarrier modulation comprising:
completing a portion of a modem initialization sequence;
transmitting an initiate diagnostic communication mode message to a receiving modem;
entering a diagnostic communications mode based on at least one of an initialization failure, a bit rate failure, a CRC error in an initialization message, a CRC error during the normal steady state transmission mode, a forward error correction error, a user request, a central office modem request and a remote terminal modem request;
and transmitting a diagnostic link message comprising at least one of a version number of a diagnostic link mode, a length of the diagnostic information, a communications standard, a chipset type, one or more vendor identifications, an ATU version number, a time domain received reverb signal, a frequency domain reverb signal, an amplifier setting, a CO
transmitter power spectral density, a frequency domain received idle channel, a signal to noise ratio, bits and gain information, and upstream and downstream transmission rates.
39. The method of claim 38, further comprising re-transmitting the diagnostic link message a predetermined number of times.
40. The method of claim 38, further comprising increasing a transmission power of the diagnostic link message.
41. A method for communicating diagnostic information between DSL modems using multicarrier modulation comprising:
completing a portion of a modem initialization sequence;
receiving an initiate diagnostic communication mode message;

entering a diagnostic communications mode based on at least one of an initialization failure, a bit rate failure, a CRC error in an initialization message, a CRC error during the normal steady state transmission mode, a forward error correction error, a user request, a central office modem request and a remote terminal modem request;
receiving a diagnostic link message comprising at least one of a version number of a diagnostic link mode, a length of the diagnostic information, a communications standard, a chipset type, one or more vendor identifications, an ATU version number, a time domain received reverb signal, a frequency domain reverb signal, an amplifier setting, a CO
transmitter power spectral density, a frequency domain received idle channel, a signal to noise ratio, bits and gain information, and upstream and downstream transmission rates.
42. The method of claim 41, further comprising receiving a re-transmitted diagnostic link message a predetermined number of times.
43. The method of claim 41, further comprising receiving an increased transmission power diagnostic link message.
CA2394491A 2000-01-07 2001-01-08 Diagnostic methods and systems for multicarrier modems Expired - Lifetime CA2394491C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2726826A CA2726826C (en) 2000-01-07 2001-01-08 Diagnostic methods and systems for multicarrier modems

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US17486500P 2000-01-07 2000-01-07
US60/174,865 2000-01-07
US22430800P 2000-08-10 2000-08-10
US60/224,308 2000-08-10
PCT/US2001/000418 WO2001052516A2 (en) 2000-01-07 2001-01-08 Diagnostic methods and systems for multicarrier modems

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2726826A Division CA2726826C (en) 2000-01-07 2001-01-08 Diagnostic methods and systems for multicarrier modems

Publications (2)

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CA2394491A1 true CA2394491A1 (en) 2001-07-19
CA2394491C CA2394491C (en) 2011-03-29

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CA2788662A Expired - Lifetime CA2788662C (en) 2000-01-07 2001-01-08 Diagnostic methods and systems for multicarrier modems
CA2948960A Expired - Lifetime CA2948960C (en) 2000-01-07 2001-01-08 Diagnostic methods and systems for multicarrier modems
CA2394491A Expired - Lifetime CA2394491C (en) 2000-01-07 2001-01-08 Diagnostic methods and systems for multicarrier modems

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CA2948960A Expired - Lifetime CA2948960C (en) 2000-01-07 2001-01-08 Diagnostic methods and systems for multicarrier modems

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US (17) US6658052B2 (en)
EP (7) EP2270996B1 (en)
JP (3) JP2003520504A (en)
KR (1) KR100690111B1 (en)
AT (2) ATE343879T1 (en)
AU (4) AU776559B2 (en)
CA (3) CA2788662C (en)
DE (1) DE60124069T2 (en)
DK (1) DK1245093T3 (en)
ES (1) ES2272438T3 (en)
HK (1) HK1254420A1 (en)
PT (1) PT1245093E (en)
WO (1) WO2001052516A2 (en)

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CA2788662A1 (en) 2001-07-19
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AU2009222537A1 (en) 2009-10-22
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EP2270996A2 (en) 2011-01-05
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CA2948960C (en) 2020-06-23
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AU2004203321B2 (en) 2008-08-21
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US9838531B2 (en) 2017-12-05
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