Reduced symbol rate handshake signaling in ADSL systems

Details Reduced symbol rate handshake signaling in ADSL systems Reduced symbol rate handshake signaling in ADSL systems

2008-05-13

2008-05-13

Tse, Young T. (Department: 2611)

Pulse or digital communications

Transceivers

Modems

C375S260000, C370S210000

Reexamination Certificate

active

07372899

ABSTRACT:
In an asynchronous digital subscriber line (ADSL) system comprising a central office High Speed ADSL Terminating Unit (HSTU-C) in bi-directional discrete multitone (DMT) communication with a remote High Speed ADSL Terminating Unit (HSTU-R), a method for improving handshake detection is provided by the present invention. The method comprises transmitting handshake signaling from the HSTU-C to the HSTU-R via a first subset of carrier sets at a first symbol rate and transmitting handshake signaling from the HSTU-C to the HSTU-R via a second subset of carrier sets at a second symbol rate, the second symbol rate being less than the first symbol rate.

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International Search Report dated Dec. 12, 2003 for Application No. PCT/US03/23105.

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