Low latency signaling scheme for mode transition in DMT modems
First Claim
1. A method for coordinating and synchronizing a mode transition in a Discrete Multi-Tone (DMT) communication system operating over a range of tones, the method comprising:
- allocating a set of one or more of the tones in the range to serve as monitor tones for signaling the mode transition; and
signaling the mode transition by transmitting a known transition sequence on the monitor tones over two or more successive symbol intervals while simultaneously transmitting data on at least some of the tones in the range other than the monitor tones.
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Abstract
A method for coordinating and synchronizing a mode transition in a Discrete Multi-Tone (DMT) communication system operating over a range of tones. The method includes allocating a set of one or more of the tones in the range to serve as monitor tones for signaling the mode transition. The mode transition is signaled by transmitting a known transition sequence on the monitor tones over two or more successive symbol intervals while simultaneously transmitting data on at least some of the tones in the range other than the monitor tones.
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Citations
32 Claims
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1. A method for coordinating and synchronizing a mode transition in a Discrete Multi-Tone (DMT) communication system operating over a range of tones, the method comprising:
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allocating a set of one or more of the tones in the range to serve as monitor tones for signaling the mode transition; and
signaling the mode transition by transmitting a known transition sequence on the monitor tones over two or more successive symbol intervals while simultaneously transmitting data on at least some of the tones in the range other than the monitor tones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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- 17. Apparatus for digital communication, comprising a transmitter, which is adapted to transmit digital data over a range of tones in accordance with a discrete multi-tone (DMT) modulation scheme in either of a first transmission mode and a second transmission mode, and which is adapted to signal a mode transition from the first transmission mode to the second transmission mode by transmitting a known transition sequence on a set of one or more monitor tones, which are allocated from among the tones in the range, over two or more successive symbol intervals while simultaneously transmitting data on at least some of the tones in the range other than the monitor tones.
Specification