US9270331B2 - Method and system for detecting non-linear devices - Google Patents
Method and system for detecting non-linear devices Download PDFInfo
- Publication number
- US9270331B2 US9270331B2 US14/050,587 US201314050587A US9270331B2 US 9270331 B2 US9270331 B2 US 9270331B2 US 201314050587 A US201314050587 A US 201314050587A US 9270331 B2 US9270331 B2 US 9270331B2
- Authority
- US
- United States
- Prior art keywords
- link
- snr
- noise
- transmit power
- power levels
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
- H04B3/21—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a set of bandfilters
-
- 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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
- 1. A module capable of detecting the presence of a nonlinear device by comparing at least one first noise value to at least one second noise value, wherein the first noise value is from a first link having a first transmit power level and the second noise value is from a second link having a second different transmit power level.
- 2. A method of detecting the presence of a nonlinear device comprising:
- comparing at least one first noise value to at least one second noise value, wherein the first noise value is from a first link having a first transmit power level and the second noise value is from a second link having a second different transmit power level.
- 3. A module capable of detecting the presence of a nonlinear device comprising:
- means for comparing at least one first noise value to at least one second noise value, wherein the first noise value is from a first link having a first transmit power level and the second noise value is from a second link having a second different transmit power level.
- 4. An information storage media comprising information that when executed compares at least one first noise value to at least one second noise value, wherein the first noise value is from a first link having a first transmit power level and the second noise value is from a second link having a second different transmit power level.
- 5. Any one of aspects 1-4, wherein the first transmit power level is for at least one subcarrier in the first link and the second transmit power level is different, and for the at least one subcarrier in the second link.
- 6. Any one of aspects 1-4, wherein the first noise value corresponds to a noise measurement on at least one subcarrier.
- 7. Any one of aspects 1-4, wherein the second noise value corresponds to a noise measurement on at least one subcarrier.
- 8. Any one of aspects 1-4, wherein the first noise value and the second noise value correspond to a noise measurement on at least one subcarrier.
- 9. A module capable of detecting the presence of a nonlinear device by comparing at least one first parameter value to at least one second parameter value, wherein
- the first parameter value is from a first link having a first transmit power level and the second parameter value is from a second link having a second different transmit power level.
- 10. A method of detecting the presence of a nonlinear device comprising:
- comparing at least one first parameter value to at least one second parameter value, wherein the first parameter value is from a first link having a first transmit power level and the second parameter value is from a second link having a second different transmit power level.
- 11. A module capable of detecting the presence of a nonlinear device comprising:
- means for comparing at least one first parameter value to at least one second parameter value, wherein the first parameter value is from a first link having a first transmit power level and the second parameter value is from a second link having a second different transmit power level.
- 12. A computer-readable storage media having stored thereon processer executable instructions that when executed compares at least one first parameter value to at least one second parameter value, wherein the first parameter value is from a first link having a first transmit power level and the second parameter value is from a second link having a second different transmit power level.
- 13. Any one of aspects 9-12, wherein the first transmit power level is for at least one subcarrier in the first link and the second transmit power level is different, and for the at least one subcarrier in the second link.
- 14. Any one of aspects 9-12, wherein the first parameter value corresponds to at least one of a noise measurement or an SNR measurement on at least one subcarrier.
- 15. Any one of aspects 9-12, wherein the second parameter value corresponds to at least one of a noise measurement or an SNR measurement on at least one subcarrier.
- 16. Any one of aspects 9-12, wherein the first parameter value and the second parameter value correspond to at least one of a noise measurement or an SNR measurement on at least one subcarrier.
- 17. Any of the above aspects above wherein a user is notified of the detection of a non-linear device.
- 18. Any of the above aspects above wherein additional links are performed to identify additional non-linear devices.
- 1. A module capable of detecting the presence of a nonlinear device by comparing at least one first noise value to at least one second noise value, wherein the first noise value is from a first packet transmission having a first transmit power level and the second noise value is from a second packet transmission having a second different transmit power level.
- 2. A method of detecting the presence of a nonlinear device comprising:
- comparing at least one first noise value to at least one second noise value, wherein the first noise value is from a first packet transmission having a first transmit power level and the second noise value is from a second packet transmission having a second different transmit power level.
- 3. A module capable of detecting the presence of a nonlinear device comprising:
- means for comparing at least one first noise value to at least one second noise value, wherein the first noise value is from a first packet transmission having a first transmit power level and the second noise value is from a second packet transmission having a second different transmit power level.
- 4. An information storage media comprising information that when executed compares at least one first noise value to at least one second noise value, wherein the first noise value is from a first packet transmission having a first transmit power level and the second noise value is from a second packet transmission having a second different transmit power level.
- 5. Any one of aspects 1-4, wherein the first transmit power level is for at least one subcarrier in the first packet transmission and the second transmit power level is different, and for the at least one subcarrier in the second packet transmission.
- 6. Any one of aspects 1-4, wherein the first noise value corresponds to a noise measurement on at least one subcarrier.
- 7. Any one of aspects 1-4, wherein the second noise value corresponds to a noise measurement on at least one subcarrier.
- 8. Any one of aspects 1-4, wherein the first noise value and the second noise value correspond to a noise measurement on at least one subcarrier.
- 9. A module capable of detecting the presence of a nonlinear device by comparing at least one first parameter value to at least one second parameter value, wherein
- the first parameter value is from a first packet transmission having a first transmit power level and the second parameter value is from a second packet transmission having a second different transmit power level.
- 10. A method of detecting the presence of a nonlinear device comprising:
- comparing at least one first parameter value to at least one second parameter value, wherein the first parameter value is from a first packet transmission having a first transmit power level and the second parameter value is from a second packet transmission having a second different transmit power level.
- 11. A module capable of detecting the presence of a nonlinear device comprising:
- means for comparing at least one first parameter value to at least one second parameter value, wherein the first parameter value is from a first packet transmission having a first transmit power level and the second parameter value is from a second packet transmission having a second different transmit power level.
- 12. A computer-readable storage media having stored thereon processer executable instructions that when executed compares at least one first parameter value to at least one second parameter value, wherein the first parameter value is from a first packet transmission having a first transmit power level and the second parameter value is from a second packet transmission having a second different transmit power level.
- 13. Any one of aspects 9-12, wherein the first transmit power level is for at least one subcarrier in the first packet transmission and the second transmit power level is different, and for the at least one subcarrier in the second packet transmission.
- 14. Any one of aspects 9-12, wherein the first parameter value corresponds to at least one of a noise measurement or an SNR measurement on at least one subcarrier.
- 15. Any one of aspects 9-12, wherein the second parameter value corresponds to at least one of a noise measurement or an SNR measurement on at least one subcarrier.
- 16. Any one of aspects 9-12, wherein the first parameter value and the second parameter value correspond to at least one of a noise measurement or an SNR measurement on at least one subcarrier.
- 17. Any of the above aspects above wherein a user is notified of the detection of a non-linear device.
- 18. Any of the above aspects above wherein additional packet transmissions are performed to identify additional non-linear devices.
SNR1=S1/N1 and SNR2=S2/N2,
N1/N2=(S1*SNR2)/(S2*SNR1).
- i) If the noise change on monitoring subcarriers significant, then a harmful unfiltered may be present on the line. In this case, this result can be reported with all remaining operational steps skipped.
- ii) If the noise change on monitoring subcarriers is not significant, then it is unlikely that a harmful unfiltered device is present on the line. In this case, report this result and skip all remaining operational steps.
- i) If the noise change on monitoring subcarriers is significant, then a harmful unfiltered device may be present on the line. In this case, a report and/or instructions are generated with operation ending.
- ii) If the noise change on monitoring subcarriers is not significant, then it is unlikely that a harmful unfiltered device is present on the line. In this case, this result can be reported with all remaining processed skipped.
- 1. The exemplary process can utilize standard compliant data collection and initialization procedures. This includes the data collection and initialization procedures specified ITU and ANSI DSL standards, such as G.992.1/0.3/0.5 and G.993.2. Because it is possible (although not necessary) to utilize standard-compliant DSL links to acquire the data rather than relying on a proprietary implementation that might not be implemented on some modems, more modems can utilize the exemplary method because the vast majority of DSL modems are effectively standard compliant.
- 2. The exemplary process can utilize standard compliant sending of data from the far-end modem to the central office, which enables data collection to be initiated and results made available remotely (e.g., from a central office far from the CPE modem and unfiltered devices) without requiring a communication channel other than the DSL link itself used to perform the measurement.
- i) If the noise change on monitoring subcarriers is significant, then a harmful unfiltered may be present on the line. In this case, this can be reported and/or instructions generated with control ending (steps S250 and S260)
- ii) If the noise change on monitoring subcarriers is not significant, then it is unlikely that a harmful unfiltered device is present on the line and this can be reported with control ending. (Steps S270 and S280)
- i) If the noise change on monitoring subcarriers is significant, then a harmful unfiltered device may be present on the line. In this case, a report and/or instructions can be generated with control continuing to step S185 where the control sequence ends.
- ii) If the noise change on monitoring subcarriers is not significant, then it is unlikely that a harmful unfiltered device is present on the line. In this case, a report and/or instructions can be generated with control continuing to step S195 where the control sequence ends.
- i) If the noise change on monitoring subcarriers is significant, then a harmful unfiltered may be present on the line. In this case, this can be reported and/or instructions generated with control ending (steps S450 and S460)
- ii) If the noise change on monitoring subcarriers is not significant, then it is unlikely that a harmful unfiltered device is present on the line and this can be reported with control ending. (Steps S470 and S480)
- i) If the noise change on monitoring subcarriers is significant, then a harmful unfiltered device may be present on the line. In this case, a report and/or instructions can be generated with control continuing to step S385 where the control sequence ends.
- ii) If the noise change on monitoring subcarriers is not significant, then it is unlikely that a harmful unfiltered device is present on the line. In this case, a report and/or instructions can be generated with control continuing to step S395 where the control sequence ends.
Claims (18)
N1 /N2=(S1*SNR2)/(S2*SNR1),
N1/N2=(S1*SNR2)/(S2*SNR1),
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/050,587 US9270331B2 (en) | 2008-01-29 | 2013-10-10 | Method and system for detecting non-linear devices |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6280508P | 2008-01-29 | 2008-01-29 | |
PCT/US2009/032020 WO2009097243A1 (en) | 2008-01-29 | 2009-01-26 | Method and system for detecting non-linear devices |
US86452610A | 2010-09-15 | 2010-09-15 | |
US14/050,587 US9270331B2 (en) | 2008-01-29 | 2013-10-10 | Method and system for detecting non-linear devices |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/864,526 Continuation US8559532B2 (en) | 2008-01-29 | 2009-01-26 | Method and system for detecting non-linear devices |
PCT/US2009/032020 Continuation WO2009097243A1 (en) | 2008-01-29 | 2009-01-26 | Method and system for detecting non-linear devices |
Publications (2)
Publication Number | Publication Date |
---|---|
US20140036980A1 US20140036980A1 (en) | 2014-02-06 |
US9270331B2 true US9270331B2 (en) | 2016-02-23 |
Family
ID=40524883
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/864,526 Active 2029-12-02 US8559532B2 (en) | 2008-01-29 | 2009-01-26 | Method and system for detecting non-linear devices |
US14/050,587 Expired - Fee Related US9270331B2 (en) | 2008-01-29 | 2013-10-10 | Method and system for detecting non-linear devices |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/864,526 Active 2029-12-02 US8559532B2 (en) | 2008-01-29 | 2009-01-26 | Method and system for detecting non-linear devices |
Country Status (3)
Country | Link |
---|---|
US (2) | US8559532B2 (en) |
EP (1) | EP2250801B1 (en) |
WO (1) | WO2009097243A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9838882B1 (en) * | 2016-10-25 | 2017-12-05 | Cisco Technology, Inc. | Dynamic frequency selection with discrimination |
US11910423B2 (en) | 2021-10-27 | 2024-02-20 | Cisco Technology, Inc. | Systems and methods for reducing false radar detection |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2250801B1 (en) | 2008-01-29 | 2017-03-15 | Broadcom Corporation | Method and system for detecting non-linear devices |
US9130655B2 (en) | 2009-11-30 | 2015-09-08 | Broadcom Corporation | Methods and systems for detecting metallic faults affecting communications links |
US20130051220A1 (en) * | 2011-08-22 | 2013-02-28 | Igor Ryshakov | Method and Apparatus for Quick-Switch Fault Tolerant Backup Channel |
US8867594B2 (en) | 2012-05-23 | 2014-10-21 | Qualcomm Incorporated | Inferring presence and identity of non-linear devices on a powerline communication network |
EP2882177A1 (en) * | 2013-12-06 | 2015-06-10 | Alcatel Lucent | Method and device for configuring communication lines against impulse noise |
WO2015168692A1 (en) | 2014-05-02 | 2015-11-05 | Ikanos Communications, Inc. | Method and apparatus for detecting missing micro-filter |
CN111164900B (en) * | 2017-09-28 | 2021-08-31 | 英国电讯有限公司 | Method, apparatus, gateway device, and storage medium for controlling communication with respect to local area network |
CN111201718B (en) | 2017-10-10 | 2021-10-01 | 英国电讯有限公司 | Identifying interfering links in a local area network |
US10236982B1 (en) * | 2017-12-21 | 2019-03-19 | Ciena Corporation | Fiber parameter identification |
Citations (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04175037A (en) | 1989-11-16 | 1992-06-23 | Fujitsu Ltd | Modem signal detection system |
JPH04181852A (en) | 1990-11-16 | 1992-06-29 | Fujitsu Ltd | Modem provided with state diagnostic function |
WO1995026604A1 (en) | 1994-03-29 | 1995-10-05 | Jabra Corporation | Adaptive telephone interface |
US5475315A (en) | 1991-09-20 | 1995-12-12 | Audio Precision, Inc. | Method and apparatus for fast response and distortion measurement |
WO1999018701A1 (en) | 1997-10-03 | 1999-04-15 | Conexant Systems, Inc. | Splitterless digital subscriber line communication system |
US6111936A (en) * | 1998-01-28 | 2000-08-29 | Paradyne Corporation | Method and apparatus for automatically detecting and measuring distortion in a DSL system |
WO2000063709A1 (en) | 1999-04-21 | 2000-10-26 | Sunrise Telecom, Inc. | Detection of bridge tap using frequency domain analysis |
US6192109B1 (en) | 1997-12-24 | 2001-02-20 | Globespan, Inc. | Apparatus and method for improved DSL communication |
US6219378B1 (en) | 1997-09-17 | 2001-04-17 | Texas Instruments Incorporated | Digital subscriber line modem initialization |
US20010031048A1 (en) | 2000-01-05 | 2001-10-18 | Payne Ralph E. | Method and system for data communication |
US6438212B1 (en) | 1997-09-18 | 2002-08-20 | Verizon Services Corp. | Automated telephone line test apparatus with intelligent diagnostic function |
US20020114383A1 (en) | 2000-08-10 | 2002-08-22 | Murat Belge | Systems and methods for characterizing transmission lines using broadband signals in a multi-carrier DSL environment |
US6456650B1 (en) | 1998-02-04 | 2002-09-24 | Texas Instruments Incorporated | Splitterless modem using harmonics reduction |
US6466649B1 (en) | 1999-12-09 | 2002-10-15 | Harris Corporation | Detection of bridged taps by frequency domain reflectometry |
US6487243B1 (en) | 1999-03-08 | 2002-11-26 | International Business Machines Corporation | Modems, methods, and computer program products for recovering from errors in a tone reversal sequence between two modems |
US6535580B1 (en) | 1999-07-27 | 2003-03-18 | Agere Systems Inc. | Signature device for home phoneline network devices |
US6549520B1 (en) * | 1997-10-10 | 2003-04-15 | Aware, Inc. | Method and apparatus for varying power levels in a multicarrier modem |
US6658052B2 (en) | 2000-01-07 | 2003-12-02 | Aware, Inc. | Systems and methods for establishing a diagnostic transmission mode and communicating over the same |
AU2003262111A1 (en) | 1997-10-10 | 2004-01-15 | Aware, Inc. | Splitterless multicarrier modem |
US6748016B1 (en) | 1999-07-16 | 2004-06-08 | Aware, Inc. | System and method for transmitting messages between transceivers using electromagnetically coupled signals |
US6856683B1 (en) | 2001-02-28 | 2005-02-15 | 3Com Corporation | Method for reducing noise from a non-linear device that shares a customer loop with an asymmetric digital subscriber line modem |
US20050041753A1 (en) | 2003-08-21 | 2005-02-24 | Aware, Inc. | Nonlinear device detection |
US20060098725A1 (en) | 2003-12-07 | 2006-05-11 | Adaptive Specctrum And Signal Alignment, Inc. | DSL system estimation including known DSL line scanning and bad splice detection capability |
US7177419B2 (en) | 2004-09-22 | 2007-02-13 | 2Wire, Inc. | Methods and apparatuses for detecting and reducing non-linear echo in a multi-carrier communication system |
WO2009097243A1 (en) | 2008-01-29 | 2009-08-06 | Aware, Inc. | Method and system for detecting non-linear devices |
US8102902B2 (en) * | 2005-01-18 | 2012-01-24 | At&T Intellectual Property I, L.P. | System and method for improving DSL performance |
US20120232878A1 (en) | 2009-11-30 | 2012-09-13 | Aware, Inc. | Methods and systems for detecting metallic faults affecting communications links |
US20130010931A1 (en) | 2010-03-26 | 2013-01-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Estimating Pair Symmetry Status for a Communication Line |
-
2009
- 2009-01-26 EP EP09706491.9A patent/EP2250801B1/en active Active
- 2009-01-26 US US12/864,526 patent/US8559532B2/en active Active
- 2009-01-26 WO PCT/US2009/032020 patent/WO2009097243A1/en active Application Filing
-
2013
- 2013-10-10 US US14/050,587 patent/US9270331B2/en not_active Expired - Fee Related
Patent Citations (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04175037A (en) | 1989-11-16 | 1992-06-23 | Fujitsu Ltd | Modem signal detection system |
JPH04181852A (en) | 1990-11-16 | 1992-06-29 | Fujitsu Ltd | Modem provided with state diagnostic function |
US5475315A (en) | 1991-09-20 | 1995-12-12 | Audio Precision, Inc. | Method and apparatus for fast response and distortion measurement |
WO1995026604A1 (en) | 1994-03-29 | 1995-10-05 | Jabra Corporation | Adaptive telephone interface |
JPH10500540A (en) | 1994-03-29 | 1998-01-13 | ジャブラ コーポレーション | Adaptive phone interface |
US6219378B1 (en) | 1997-09-17 | 2001-04-17 | Texas Instruments Incorporated | Digital subscriber line modem initialization |
US6438212B1 (en) | 1997-09-18 | 2002-08-20 | Verizon Services Corp. | Automated telephone line test apparatus with intelligent diagnostic function |
JP2001519620A (en) | 1997-10-03 | 2001-10-23 | コネクサント システムズ,インコーポレーテッド | Digital subscriber line communication system without splitter |
WO1999018701A1 (en) | 1997-10-03 | 1999-04-15 | Conexant Systems, Inc. | Splitterless digital subscriber line communication system |
AU2003262111A1 (en) | 1997-10-10 | 2004-01-15 | Aware, Inc. | Splitterless multicarrier modem |
US6549520B1 (en) * | 1997-10-10 | 2003-04-15 | Aware, Inc. | Method and apparatus for varying power levels in a multicarrier modem |
US6192109B1 (en) | 1997-12-24 | 2001-02-20 | Globespan, Inc. | Apparatus and method for improved DSL communication |
US6111936A (en) * | 1998-01-28 | 2000-08-29 | Paradyne Corporation | Method and apparatus for automatically detecting and measuring distortion in a DSL system |
US6456650B1 (en) | 1998-02-04 | 2002-09-24 | Texas Instruments Incorporated | Splitterless modem using harmonics reduction |
US6487243B1 (en) | 1999-03-08 | 2002-11-26 | International Business Machines Corporation | Modems, methods, and computer program products for recovering from errors in a tone reversal sequence between two modems |
WO2000063709A1 (en) | 1999-04-21 | 2000-10-26 | Sunrise Telecom, Inc. | Detection of bridge tap using frequency domain analysis |
US6748016B1 (en) | 1999-07-16 | 2004-06-08 | Aware, Inc. | System and method for transmitting messages between transceivers using electromagnetically coupled signals |
US6535580B1 (en) | 1999-07-27 | 2003-03-18 | Agere Systems Inc. | Signature device for home phoneline network devices |
US6466649B1 (en) | 1999-12-09 | 2002-10-15 | Harris Corporation | Detection of bridged taps by frequency domain reflectometry |
US20010031048A1 (en) | 2000-01-05 | 2001-10-18 | Payne Ralph E. | Method and system for data communication |
US6658052B2 (en) | 2000-01-07 | 2003-12-02 | Aware, Inc. | Systems and methods for establishing a diagnostic transmission mode and communicating over the same |
US20060182169A1 (en) * | 2000-08-10 | 2006-08-17 | Aware, Inc. | Systems and methods for characterizing transmission lines using broadband signals in a multi-carrier DSL environment |
US20020114383A1 (en) | 2000-08-10 | 2002-08-22 | Murat Belge | Systems and methods for characterizing transmission lines using broadband signals in a multi-carrier DSL environment |
US6856683B1 (en) | 2001-02-28 | 2005-02-15 | 3Com Corporation | Method for reducing noise from a non-linear device that shares a customer loop with an asymmetric digital subscriber line modem |
US20050041753A1 (en) | 2003-08-21 | 2005-02-24 | Aware, Inc. | Nonlinear device detection |
US7580471B2 (en) | 2003-08-21 | 2009-08-25 | Aware, Inc. | Nonlinear device detection |
US20090268797A1 (en) | 2003-08-21 | 2009-10-29 | Aware, Inc. | Nonlinear device detection |
US20060098725A1 (en) | 2003-12-07 | 2006-05-11 | Adaptive Specctrum And Signal Alignment, Inc. | DSL system estimation including known DSL line scanning and bad splice detection capability |
US7177419B2 (en) | 2004-09-22 | 2007-02-13 | 2Wire, Inc. | Methods and apparatuses for detecting and reducing non-linear echo in a multi-carrier communication system |
US8102902B2 (en) * | 2005-01-18 | 2012-01-24 | At&T Intellectual Property I, L.P. | System and method for improving DSL performance |
WO2009097243A1 (en) | 2008-01-29 | 2009-08-06 | Aware, Inc. | Method and system for detecting non-linear devices |
US8559532B2 (en) * | 2008-01-29 | 2013-10-15 | Aware, Inc. | Method and system for detecting non-linear devices |
US20120232878A1 (en) | 2009-11-30 | 2012-09-13 | Aware, Inc. | Methods and systems for detecting metallic faults affecting communications links |
US20130010931A1 (en) | 2010-03-26 | 2013-01-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Estimating Pair Symmetry Status for a Communication Line |
Non-Patent Citations (57)
Title |
---|
"IEEE Standard 802.3: Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications" IEEE Standard 802.3-2008, Dec. 26, 2008, pp. 1-2977. |
"ITU-T Recommendation G.992.3, "Asymmetric digital subscriber line transceivers 2 (ADSL2)," Jan. 2005, 436 pages". |
Communication Pursuant to Rules 161(1) and 162 EPC for European Patent Application No. 09706491.9, mailed Nov. 12, 2010. |
Communication Pursuant to Rules 161(1) and 162 EPC for European Patent Application No. 10791017.6, mailed Jul. 27, 2012. |
Cunningham et al. "Proposal for a Standard R-Lineprobe State for G.992.3", Aug. 21, 2003. |
Decision of Refusal (including translation) for Japanese Patent Application No. 2009-214695, mailed Mar. 11, 2013. |
Extended European Search Report for European Patent Application No. 10012113.6, dated Nov. 30, 2011. |
First Examination Report for Australian Patent Application No. 2004302784, dated Jun. 2, 2009. |
First Examination Report for Australian Patent Application No. 2010200127, mailed Mar. 6, 2012. |
First Examination Report for Indian Patent Application No. 549/KOLNP/2006, dated Sep. 27, 2007. |
First Office Action for Chinese Patent Application No. 200480027933.4, mailed Nov. 28, 2008. |
First Official Action (including translation) for Japanese Patent Application No. 2009-214695, mailed Sep. 3, 2012. |
IEEE Standard 802.11: Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, IEEE Standard 802.11-2007, Jun. 30, 2007, pp. 1-1233. |
International Preliminary Report on Patentabilitiy for International (PCT) Patent Application No. PCT/US2004/026912, mailed Mar. 2, 2006. |
International Preliminary Report on Patentability for International (PCT) Patent Application No. PCT/US2009/032020, mailed Aug. 12, 2010. |
International Preliminary Report on Patentability for International Application No. PCT/US2010/058292, mailed Jun. 14, 2012. |
International Search Report for International (PCT) Patent Application No. PCT/US2004/026912, mailed Dec. 9, 2004. |
International Search Report for International (PCT) Patent Application No. PCT/US2009/032020, mailed Apr. 27, 2009. |
International Search Report for International Application No. PCT/US2010/058292, mailed Mar. 29, 2011. |
International Telecommunication Union, Recommendation G.997.1, Series G: Transmission Systems and Media, Digital Systems and Networks, Apr. 2009, 128 pages. |
ITU-T Recommendation G.992.1 "Series G: Transmission Systems and Media, Digital Systems and Networks-Asymmetric Digital Subscriber Line (ADSL) Transceivers" Jun. 1999, 256 pages. |
ITU-T Recommendation G.992.5, "Asymmetric Digital Subscriber Line (ADSL) transceivers-Extended bandwidth ADSL2 (ADSL2+)," International Telecommunications Union, May 2003, 92 pages. |
ITU-T Recommendation G.993.2, "Very high speed digital subscriber line transceivers 2 (VDSL2)," International Telecommunications Union, Feb. 2006, 252 pages. |
ITU-T Recommendation G.9960 "Series G: Transmission Systems and Medial, Digital Systems and Networks-Unified High-Speed Wire-Line Based Home Networking Transceivers-System Architecture and Physical Layer Specification" Jun. 2010, 162 pages. |
Notice of Acceptance for Australian Patent Application No. 2004302784, dated Oct. 15, 2009. |
Notice of Acceptance for Australian Patent Application No. 2010200127, dated Dec. 7, 2012. |
Notice of Allowance (including translation) for Korean Patent Application No. 10-2009-7016184, mailed Jul. 1, 2011. |
Notice of Allowance for Canadian Patent Application No. 2,535,460, mailed Jan. 25, 2013. |
Notice of Allowance for Japanese Patent Application No. 2006-524035, mailed Aug. 30, 2010. |
Notice of Allowance for U.S. Appl. No. 10/921,857, mailed Jun. 30, 2009. |
Notice of Allowance for U.S. Appl. No. 12/864,526, mailed Aug. 6, 2013. |
Notice of Refusal for Korean Patent Application No. 10-2006-7003404, mailed Jul. 29, 2011. |
Notification of Granting a Patent for Chinese Patent Application No. 200480027933.4, mailed Jan. 26, 2011. |
Notification of Reasons for Refusal (including translation) for Japanese Patent Application No. 2006-524035, dispatched Jan. 18, 2010. |
Notification of Reasons for Refusal (including translation) for Japanese Patent Application No. 2006-524035, dispatched Mar. 16, 2009. |
Office Action for Canadian Patent Application No. 2,535,460, mailed Dec. 1, 2011. |
Office Action for European Patent Application No. 04781572.5, dated Dec. 14, 2007. |
Office Action for European Patent Application No. 04781572.5, dated Jan. 28, 2010. |
Official Action (including translation) for Korean Patent Application No. 10-2006-7003404, mailed Jan. 12, 2011. |
Official Action (including translation) for Korean Patent Application No. 10-2009-7016184, dispatched Feb. 26, 2010. |
Official Action (including translation) for Korean Patent Application No. 10-2009-7016184, mailed Dec. 28, 2010. |
Official Action for European Patent Application No. 04781572.5, dated Aug. 26, 2011. |
Official Action for U.S. Appl. No. 10/921,857, mailed Dec. 11, 2007. |
Official Action for U.S. Appl. No. 10/921,857, mailed Dec. 24, 2008. |
Official Action for U.S. Appl. No. 10/921,857, mailed Sep. 22, 2008. |
Official Action for U.S. Appl. No. 12/498,155, mailed Aug. 6, 2010. |
Official Action for U.S. Appl. No. 12/864,526, mailed Jun. 26, 2013. |
Official Action for U.S. Appl. No. 12/864,526, mailed Nov. 8, 2012. |
Official Action for U.S. Appl. No. 13/502,199, mailed Jan. 13, 2014. |
Partial European Search Report for European Patent Application No. 10012113.6, dated Sep. 6, 2011. |
Second Office Action (including translation) for Chinese Patent Application No. 200480027933.4, mailed May 22, 2009. |
Supplemental Notice of Allowance for U.S. Appl. No. 10/921,857, mailed Jul. 23, 2009. |
T1-413-1998 "Network and Customer Installation Interfaces-Asymmetric Digital Subscriber Line (ADSL) Metallic Interface" Draft American National Standards for Telecommunications, 1998, i.e., T1.413 Issue 2, 270 pages. |
Third Office Action (including translation) for Chinese Patent Application No. 200480027933.4, mailed Nov. 20, 2009. |
Written Opinion for International (PCT) Patent Application No. PCT/US2004/026912, mailed Dec. 9, 2004. |
Written Opinion for International (PCT) Patent Application No. PCT/US2009/032020, mailed Apr. 27, 2009. |
Written Opinion for International Application No. PCT/US2010/058292, mailed Mar. 29, 2011. |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9838882B1 (en) * | 2016-10-25 | 2017-12-05 | Cisco Technology, Inc. | Dynamic frequency selection with discrimination |
US10237749B2 (en) | 2016-10-25 | 2019-03-19 | Cisco Technology, Inc. | Dynamic frequency selection with discrimination |
US11910423B2 (en) | 2021-10-27 | 2024-02-20 | Cisco Technology, Inc. | Systems and methods for reducing false radar detection |
Also Published As
Publication number | Publication date |
---|---|
US20140036980A1 (en) | 2014-02-06 |
WO2009097243A1 (en) | 2009-08-06 |
US8559532B2 (en) | 2013-10-15 |
EP2250801B1 (en) | 2017-03-15 |
US20110053528A1 (en) | 2011-03-03 |
EP2250801A1 (en) | 2010-11-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9270331B2 (en) | Method and system for detecting non-linear devices | |
US10623559B2 (en) | Systems and methods for establishing a diagnostic transmission mode and communicating over the same | |
US9054794B2 (en) | Detecting faults affecting communications links | |
US9130655B2 (en) | Methods and systems for detecting metallic faults affecting communications links | |
CA2726826C (en) | Diagnostic methods and systems for multicarrier modems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BROADCOM CORPORATION, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AWARE, INC.;REEL/FRAME:033705/0585 Effective date: 20140801 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: BANK OF AMERICA, N.A., AS COLLATERAL AGENT, NORTH CAROLINA Free format text: PATENT SECURITY AGREEMENT;ASSIGNOR:BROADCOM CORPORATION;REEL/FRAME:037806/0001 Effective date: 20160201 Owner name: BANK OF AMERICA, N.A., AS COLLATERAL AGENT, NORTH Free format text: PATENT SECURITY AGREEMENT;ASSIGNOR:BROADCOM CORPORATION;REEL/FRAME:037806/0001 Effective date: 20160201 |
|
AS | Assignment |
Owner name: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD., SINGAPORE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BROADCOM CORPORATION;REEL/FRAME:041706/0001 Effective date: 20170120 Owner name: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BROADCOM CORPORATION;REEL/FRAME:041706/0001 Effective date: 20170120 |
|
AS | Assignment |
Owner name: BROADCOM CORPORATION, CALIFORNIA Free format text: TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS;ASSIGNOR:BANK OF AMERICA, N.A., AS COLLATERAL AGENT;REEL/FRAME:041712/0001 Effective date: 20170119 |
|
AS | Assignment |
Owner name: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITE Free format text: MERGER;ASSIGNOR:AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.;REEL/FRAME:047229/0408 Effective date: 20180509 |
|
AS | Assignment |
Owner name: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITE Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE EFFECTIVE DATE PREVIOUSLY RECORDED ON REEL 047229 FRAME 0408. ASSIGNOR(S) HEREBY CONFIRMS THE THE EFFECTIVE DATE IS 09/05/2018;ASSIGNOR:AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.;REEL/FRAME:047349/0001 Effective date: 20180905 |
|
AS | Assignment |
Owner name: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITE Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE PATENT NUMBER 9,385,856 TO 9,385,756 PREVIOUSLY RECORDED AT REEL: 47349 FRAME: 001. ASSIGNOR(S) HEREBY CONFIRMS THE MERGER;ASSIGNOR:AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.;REEL/FRAME:051144/0648 Effective date: 20180905 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20200223 |