US 7,480,327 B2Granted

System and method for controlling line driver power in digital subscriber line modems

AssigneeInternational Business Machines Corporation

InventorsGordon Taylor Davis, Jeffrey Haskell Derby, Evangelos Stavros Eleftheriou, Sedat Oelcer, Malcolm Scott Ware

Life of this patent

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Abstract

A method for operating plurality of DSL modem transmitters integrated within a circuit card. The method includes each DSL modem transmitter: generating a full power physical frame when the DSL modem transmitter is provided with data to transmit; generating a low power physical frame having a control channel signal component and no data; and selecting between the full power physical frame and the low power physical frame for transmission from the DSL modem transmitter, wherein selection of the low power physical frame for transmission from the DSL modem transmitter is based only on the DSL modem transmitter having no data to transmit. The method further includes limiting aggregate flow of data to the plurality of DSL modem transmitters such that a total power required by the plurality of DSL modem transmitters is held below a predefined target power level.

Claims10

Dependent claims

A method for operating plurality of DSL (Digital Subscriber Line) modem transmitters integrated within a circuit card, the method comprising:

each DSL modem transmitter generating a full power physical frame when the DSL modem transmitter is provided with data to transmit, the full power physical frame including a control channel signal component and a data signal component;
each DSL modem transmitter generating a low power physical frame having a control channel signal component and no data;
each DSL modem transmitter selecting between the full power physical frame and the low power physical frame for transmission from the DSL modem transmitter, wherein selection of the low power physical frame for transmission from the DSL modem transmitter is based only on the DSL modem transmitter having no data to transmit;
and
limiting aggregate flow of data to the plurality of DSL modem transmitters such that a total power required by the plurality of DSL modem transmitters is held below a predefined target power level.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/945,213Filed 26 Nov 2007 · continuation
Priority: 21 Mar 2001
Published: US 2008/0069194 A120 Mar 2008
Granted: 20 Jan 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 25/028
Arrangements for coupling to transmission lines: arrangements specific to the transmitter end
H04L 27/2626
Multicarrier modulation systems: arrangements specific to the transmitter only
H04M 11/062
Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors: using different frequency bands for speech and…
Y02D 30/50
Reducing energy consumption in communication networks: in wire-line communication networks, e.g. low power modes or reduced link rate

Family

Application09/814,044Parent of this continuation · filed 21 Mar 2001
Application11/237,001Parent of this continuation · filed 28 Sep 2005
US 6,973,123 B2Parent of this continuation · filed 6 Dec 2005
US 2008/0069194 A1Pre-grant publication · published 20 Mar 2008
US 7,352,802 B2Parent of this continuation
US 2002/0136284 A1Published application
US 2006/0039457 A1Published application
US 7,480,327 B2This patent

From the US filing history. Foreign family members aren’t listed.