Synchronizing initial handshake in ADSL annex C to TTR
First Claim
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1. A method for synchronizing an initialization procedure with TTR in an ADSL Annex C communication system having a transmitting node and a receiving node that are communicatively coupled, the method comprising:
- transmitting a specially defined signal during one or more sets of known FEXT symbols of a first outgoing hyperframe, so that when detected at the receiving node, the specially defined signal establishes synchronization to TTR thereby enabling a synchronized initialization procedure, wherein the synchronized initialization procedure includes;
receiving a first response signal during one or more sets of FEXT symbols of a first incoming hyperframe to confirm receiving node detection of the specially defined signal.
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Abstract
Techniques for establishing TTR indication in ADSL Annex C based communication systems are disclosed. The techniques enable, for example, hyperframe alignment and synchronized initialization procedures (e.g., G.hs).
26 Citations
9 Claims
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1. A method for synchronizing an initialization procedure with TTR in an ADSL Annex C communication system having a transmitting node and a receiving node that are communicatively coupled, the method comprising:
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transmitting a specially defined signal during one or more sets of known FEXT symbols of a first outgoing hyperframe, so that when detected at the receiving node, the specially defined signal establishes synchronization to TTR thereby enabling a synchronized initialization procedure, wherein the synchronized initialization procedure includes; receiving a first response signal during one or more sets of FEXT symbols of a first incoming hyperframe to confirm receiving node detection of the specially defined signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for synchronizing an initialization procedure with TTR in an ADSL Annex C communication system having a transmitting node and a receiving node that are communicatively coupled, wherein the method is initiated by a remote transceiver at the receiving node, the method comprising:
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receiving a second specially defined signal from the remote transceiver during one or more sets of known FEXT symbols of a first incoming hyperframe, and transmission takes place in response to detecting the second specially defined signal; and transmitting a first specially defined signal during one or more sets of known FEXT symbols of a first outgoing hyperframe, so that when detected at the receiving node, the first specially defined signal establishes synchronization to TTR thereby enabling a synchronized initialization procedure.
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8. A method for synchronizing an initialization procedure with TTR in an ADSL Annex C communication system having a transmitting node and a receiving node that are communicatively coupled, the method comprising:
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transmitting a specially defined signal during one or more sets of known FEXT symbols of a first outgoing hyperframe, so that when detected at the receiving node, the specially defined signal establishes synchronization to TTR thereby enabling a synchronized initialization procedure; and engaging a fall back procedure in response to the receiving node not responding to the transmitted specially defined signal.
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9. A method for synchronizing an initialization procedure with TTR in an ADSL Annex C communication system having a transmitting node and a receiving node that are communicatively coupled, the method comprising:
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transmitting a specially defined signal during one or more sets of known FEXT symbols of a first outgoing hyperframe, so that when detected at the receiving node, the specially defined signal establishes synchronization to TTR thereby enabling a synchronized initialization procedure; and alternately sending the specially defined signal and a conventional signal a number of times until an affirmative response is received from the receiving node.
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Specification