US Patent No: 6,760,847

Number of patents in Portfolio can not be more than 2000

Method for performing subscriber loop disturber recognition by comparing measured sample power spectral densities with a set of known power spectral densities

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Importance

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Abstract

To identify interference from other data carrying subscriber loops (i.e., from loop disturbers), a power spectral density sample may be obtained from the subscriber loop under consideration based on at least one measurement while the loop is not transmitting data. The sample power spectral density may then be correlated with each one of a set of known power spectral densities. Each known power spectral density represents a power spectral density in a loop which is not transmitting data in the presence of one of (i) no subscriber loop disturbers, (ii) a particular subscriber loop disturber, and (iii) particular subscriber loop disturbers. Based on the correlations, subscriber loop disturbers may be recognized.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NORTEL NETWORKS LIMITEDMONTREAL QUEBEC1733

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Campbell, Michael A Brampton, CA 6 92
Liu, Gin Brampton, CA 8 109
Stone, Gary T Toronto, CA 2 21
Yao, Liqian Mississauga, CA 2 21

Cited Art

Patent Info (Count) # Cites Year
 
ROCKSTAR CONSORTIUM US LP (2)
6,055,297 Reducing crosstalk between communications systems 42 1996
6,339,613 Reducing crosstalk between communications systems 18 1999
 
3COM LTD. (1)
6,088,368 Ethernet transport facility over digital subscriber lines 94 1997
 
BAKER HUGHES INCORPORATED (1)
6,470,275 Adaptive filtering with reference accelerometer for cancellation of tool-mode signal in MWD applications 6 2000
 
LEGERITY, INC. (1)
6,456,602 Method and apparatus for achieving frequency diversity by use of multiple images 7 1999
 
LUCENT TECHNOLOGIES INC. (1)
6,456,850 Method for preventing overload conditions in communication systems 27 1999
 
QWEST COMMUNICATIONS INTERNATIONAL INC. (1)
6,209,108 Method for testing VDSL loops 20 1999
 
VERIZON PATENT AND LICENSING INC. (1)
6,292,539 Method and apparatus for digital subscriber loop qualification 52 1998

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
QWEST COMMUNICATIONS INTERNATIONAL INC. (9)
7,467,193 Management of virtual and physical network inventories 3 2001
7,464,164 Linking order entry process to realtime network inventories and capacities 1 2001
7,219,124 Provisioning system and method for auto-discovering customer premises equipment in activating xDSL 11 2001
7,134,135 Fault management in a VDSL network 4 2001
7,058,707 Performance modeling in a VDSL network 2 2001
7,032,016 Proactive service request management and measurement 10 2001
6,981,039 Fault management in a VDSL network 31 2001
7,693,079 Proactive repair process in the xDSL network (with a VDSL focus) 3 2004
8,364,801 Management of virtual and physical network inventories 0 2008
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (2)
7,200,505 Methods and systems for identifying recurrent patterns 11 2004
7,865,389 Analyzing time series data that exhibits seasonal effects 0 2007
 
ADAPTIVE SPECTRUM AND SIGNAL ALIGNMENT, INC. (1)
7,573,943 Interference cancellation system 3 2004
 
HUAWEI TECHNOLOGIES CO., LTD. (1)
7,907,506 Method, system and device for xDSL crosstalk cancellation 0 2009
 
INTEL CORPORATION (1)
7,068,755 Methods and apparatus for characterizing subscriber loop based on analysis of DSL handshaking signals and for optimization of DSL operation 5 2003
 
THE BOEING COMPANY (1)
8,270,900 Aggregate batch polling method for return link communications between a platform and a base station 0 2006

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