High speed multiple loop DSL system
First Claim
1. A DSL (Digital Subscriber Line) system comprising:
- a multiple loop segment comprising a plurality of bonded loops, each loop comprising a twisted pair of wires, the loops being coupled at one end to a controller and at the other end, opposite the controller, to a plurality of different customer premises equipments (CPEs) that are in different locations to provide at least one DSL communications channel to each respective CPE, there being at least one loop coupled to each CPE;
the controller to monitor the multiple loop segment and to generate control signals based on the monitoring; and
a vectoring unit also coupled to a plurality of the loops of the multiple loop segment at the controller end of the multiple loop segment, to receive the control signals and to vector transmissions simultaneously through the coupled plurality of the loops of the multiple loop segment, the coupled plurality of the loops being coupled to different CPEs,wherein for at least one CPE, a plurality of twisted pairs of wires are coupled to the CPE such that one wire of the plurality of twisted pairs of wires is selected as a reference wire and the other wires of the plurality of twisted pairs of wires are referenced to the reference wire to provide more communications channels than there are twisted pairs.
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Accused Products
Abstract
A DSL system includes a multiple loop segment where K loops are bonded to provide a multiple loop segment having up to (2K−1) communication channels on which transmissions are vectored. The segment may be a drop to a customer premises, an inter-pedestal link, or any other suitable part of a larger DSL system. Generally the bonded loops are relatively short, being 300 meters or less. Signal vectoring is used to increase the speed and data carrying capability of the channels. In some embodiments, an expanded frequency spectrum also can be used to increase the data carrying capability of one or more of the channels. An impedance matching circuit may be coupled to each end of the segment to provided efficient transmission of data across the segment. A controller may provide control signals used to operate the segment as a vectored system and, if desired, frequency bandwidth control signals. The controller may monitor and/or collect data and information from the DSL system to assist in generating control signals. The controller can be a dynamic spectrum manager or DSM Center that includes a computer system and/or other hardware to assist in performing the required functions.
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Citations
36 Claims
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1. A DSL (Digital Subscriber Line) system comprising:
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a multiple loop segment comprising a plurality of bonded loops, each loop comprising a twisted pair of wires, the loops being coupled at one end to a controller and at the other end, opposite the controller, to a plurality of different customer premises equipments (CPEs) that are in different locations to provide at least one DSL communications channel to each respective CPE, there being at least one loop coupled to each CPE; the controller to monitor the multiple loop segment and to generate control signals based on the monitoring; and a vectoring unit also coupled to a plurality of the loops of the multiple loop segment at the controller end of the multiple loop segment, to receive the control signals and to vector transmissions simultaneously through the coupled plurality of the loops of the multiple loop segment, the coupled plurality of the loops being coupled to different CPEs, wherein for at least one CPE, a plurality of twisted pairs of wires are coupled to the CPE such that one wire of the plurality of twisted pairs of wires is selected as a reference wire and the other wires of the plurality of twisted pairs of wires are referenced to the reference wire to provide more communications channels than there are twisted pairs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A DSL (Digital Subscriber Line) system comprising:
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a multiple loop segment comprising a plurality of bonded loops, each loop in the multiple loop segment having a pair of wires, the segment being coupled at a first end to a plurality of different customer premises equipments (CPEs) to provide different channels to different CPEs that are in different locations, the wires of the multiple loop segment being connected so that at least two wires of the multiple bonded loops each carry a communication channel using a third wire of the multiple bonded loops as a common reference wire, a first vectoring unit coupled at the first end of the multiple loop segment resident at one of the CPEs of the plurality of different CPEs, the first vectoring unit comprising a first vector signal processing module; and a second vectoring unit coupled to a plurality of the loops of the multiple loop segment at a second end opposite the first end of the multiple loop segment opposite the plurality of CPEs and comprising a second vector signal processing module; wherein the first and second vectoring units provide vectored transmissions across the multiple loop segment, the second vectoring unit vectoring upstream and downstream transmissions with the plurality of CPEs simultaneously across all active channels of the coupled plurality of the loops of the segment across different CPEs. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A DSL (Digital Subscriber Line) system comprising:
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a multiple loop segment, comprising a plurality of bonded loops, each loop in the multiple loop segment having a pair of wires, the wires being connected as communication channels to a plurality of different customer premises equipments (CPEs) coupled to one end of the multiple loop segment to provide different channels to different CPEs that are in different locations, the wires in each loop being connected so that at least two wires of the multiple bonded loops each carry a communication channel using a third wire of the multiple bonded loops as a common reference wire; and a controller coupled opposite the plurality of different CPEs, the controller comprising; means for collecting data regarding transmissions across the communications channels of the multiple loop segment; and means for controlling vectoring of transmissions across the communications channels of the multiple loop segment to vector upstream and downstream transmissions with the plurality of CPEs simultaneously across all active channels of the communications channels of the coupled plurality of the loops of the segment. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A method of sending DSL (Digital Subscriber Line) signals through multiple communication channels comprising:
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sending a first signal through a first communications channel to a first customer premises equipment (CPE), wherein the first communication channel comprises a plurality of twisted pairs from a multiple loop segment numbering K bonded twisted pairs so that there are 2K wires in the segment, one of the 2K wires being selected as a reference wire, the remaining (2K−
l) wires being referenced to the reference wire to provide up to (2K−
l) communications channels, the (2K−
1) channels using vectoring across the channels;sending a second signal through a second communications channel to a second CPE at a different location using a second at least two wires of the same multiple loop segment; and vectoring upstream and downstream transmissions through the first and second communications channels simultaneously across the first and second communications channels and the first and second CPEs from an upstream location coupled to the first and second communications channels opposite the CPEs. - View Dependent Claims (31, 32, 33)
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34. A computer-readable storage medium having instructions stored thereon, that when executed by a computer causes the computer to perform operations comprising:
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collecting data regarding DSL (Digital Subscriber Line) transmissions on a plurality of loops of a multiple loop segment, each loop having a pair of wires to carry transmissions to customer premises equipment (CPE), the plurality of loops forming a plurality of communications channels to a plurality of different CPEs at different locations, at least one channel comprising a plurality of twisted pairs from a multiple loop segment numbering K bonded twisted pairs so that there are 2K wires in the segment, one of the 2K wires being selected as a reference wire, the remaining (2K−
l) wires being referenced to the reference wire to provide up to (2K−
l) communications channels, the (2K−
1) channels using vectoring across the channels; andgenerating control signals to simultaneously control vectoring of the transmissions across the plurality of loops with the plurality of different CPEs across different communications channels of the coupled plurality of loops of the segment. - View Dependent Claims (35, 36)
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Specification