CA2369858A1 - Single ended measurement method and system for determining subscriber loop make up - Google Patents

Single ended measurement method and system for determining subscriber loop make up Download PDF

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Publication number
CA2369858A1
CA2369858A1 CA002369858A CA2369858A CA2369858A1 CA 2369858 A1 CA2369858 A1 CA 2369858A1 CA 002369858 A CA002369858 A CA 002369858A CA 2369858 A CA2369858 A CA 2369858A CA 2369858 A1 CA2369858 A1 CA 2369858A1
Authority
CA
Canada
Prior art keywords
loop
discontinuity
determining
echoes
measurement method
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
CA002369858A
Other languages
French (fr)
Other versions
CA2369858C (en
Inventor
Stefano Galli
David L. Waring
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.)
Intellectual Ventures II 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
Application filed by Individual filed Critical Individual
Publication of CA2369858A1 publication Critical patent/CA2369858A1/en
Application granted granted Critical
Publication of CA2369858C publication Critical patent/CA2369858C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04L1/24—Testing correct operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • 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
    • H04M3/305—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop testing of physical copper line parameters, e.g. capacitance or resistance
    • H04M3/306—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop testing of physical copper line parameters, e.g. capacitance or resistance for frequencies above the voice frequency, e.g. xDSL line qualification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • H04M3/085—Fault locating arrangements

Abstract

A method and system for determining the make-up of a subscriber loop (220) comprising sending pulses onto a loop and acquiring data based on received echo signals. Determining (7301) from the received echoes each discontinuity on the loop and, based on each discontinuity, determining a channel transfer function (7305) for each loop section preceding the discontinuity. The transfer function is then used to synthesize an inverse filter (7309). The inverse filter and acquired data are convolved for all the loop sections preceding the discontinuity (7313). The method may be further improved by modeling real and spurious echoes and subtracting these echoes from the echoes generated in the loop.
CA002369858A 1999-06-25 2000-06-19 Single ended measurement method and system for determining subscriber loop make up Expired - Lifetime CA2369858C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US14112199P 1999-06-25 1999-06-25
US60/141,121 1999-06-25
PCT/US2000/016865 WO2001001158A1 (en) 1999-06-25 2000-06-19 Single ended measurement method and system for determining subscriber loop make up

Publications (2)

Publication Number Publication Date
CA2369858A1 true CA2369858A1 (en) 2001-01-04
CA2369858C CA2369858C (en) 2006-02-21

Family

ID=22494251

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002369858A Expired - Lifetime CA2369858C (en) 1999-06-25 2000-06-19 Single ended measurement method and system for determining subscriber loop make up

Country Status (3)

Country Link
EP (1) EP1247110A4 (en)
CA (1) CA2369858C (en)
WO (1) WO2001001158A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116520270A (en) * 2023-07-04 2023-08-01 四川天中星航空科技有限公司 Radar electronic warfare testing method based on evaluation model

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4311902B2 (en) 2000-01-07 2009-08-12 アウェア， インコーポレイテッド System and method for determining transmission line loop length and bridge tap length
US6668041B2 (en) 2001-05-09 2003-12-23 Centillium Communications, Inc. Single ended line probing in DSL system
US6801601B2 (en) * 2000-10-31 2004-10-05 Centillium Communications, Inc. Single ended line probing in DSL system using transformerless hybrid
EP1248383B1 (en) * 2001-04-02 2006-09-20 Alcatel Method and apparatus for identification of an access network by means of 1-port measurements
WO2002087103A1 (en) * 2001-04-19 2002-10-31 Aware, Inc. Single-ended measurement method and system using abcd-matrix theory of transmission lines
WO2002089454A2 (en) * 2001-04-26 2002-11-07 Aware, Inc. Systems and methods for loop characterization from double-ended measurements
US6876725B2 (en) * 2001-05-09 2005-04-05 Centillium Communications, Inc. Single ended line probing in DSL system
JP2003244034A (en) * 2002-02-15 2003-08-29 Matsushita Electric Ind Co Ltd Method and apparatus for inspecting set of cables in transmission line, and selection method of set of cables
DE60238976D1 (en) 2002-07-26 2011-03-03 Alcatel Lucent Data processing system for interpreting reflection measurement information
DE60222763T2 (en) * 2002-08-05 2008-07-03 Alcatel Lucent Subscriber line localization in a subscriber line based on reflectance time range measurements
ES2256428T3 (en) * 2002-10-18 2006-07-16 Alcatel SIGNAL PROCESSING TO ESTIMATE THE ATTRIBUTES OF A TRANSMISSION LINE.
WO2004104531A2 (en) * 2003-05-15 2004-12-02 Telcordia Technologies, Inc. Method and system for improved single-ended loop make-up identification
WO2006129999A1 (en) * 2005-05-31 2006-12-07 Snap-On Incorporated Network bus diagnosis system
WO2008081215A1 (en) 2006-12-29 2008-07-10 Telecom Italia S.P.A. Method for the status analysis of a subscriber loop to support broadband telecommunication services
JP4621266B2 (en) 2008-03-25 2011-01-26 富士通株式会社 Measurement method, echo generation location identification method, measurement device, and echo generation location identification device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630228A (en) * 1982-06-28 1986-12-16 Systron-Donner Corporation Transmission line analyzer for automatically identifying the severities and locations of multiple mismatches
DE4220410C1 (en) * 1992-06-19 1993-11-25 Siemens Ag Method for determining a fault on an electrical transmission line
US5369366A (en) * 1993-02-12 1994-11-29 Cable Repair Systems Corporation Method of finding faults in a branched electrical distribution circuit
US6091713A (en) * 1998-04-13 2000-07-18 Telcordia Technologies, Inc. Method and system for estimating the ability of a subscriber loop to support broadband services
US6292539B1 (en) * 1998-05-29 2001-09-18 Verizon Laboratories Inc. Method and apparatus for digital subscriber loop qualification

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116520270A (en) * 2023-07-04 2023-08-01 四川天中星航空科技有限公司 Radar electronic warfare testing method based on evaluation model
CN116520270B (en) * 2023-07-04 2023-09-05 四川天中星航空科技有限公司 Radar electronic warfare testing method based on evaluation model

Also Published As

Publication number Publication date
EP1247110A4 (en) 2006-08-09
CA2369858C (en) 2006-02-21
EP1247110A1 (en) 2002-10-09
WO2001001158A1 (en) 2001-01-04

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