Aligning the upstream DMT symbols of multiple lines in a TDD DSL system

摘要

A method comprising transmitting a delay value to each of a plurality of digital subscriber line (DSL) transceivers, by a distribution point unit (DPU), and receiving a plurality of signals at substantially the same time, wherein each of the plurality of signals is from a different DSL transceiver in the plurality of DSL transceivers and transmitted at different times based on the delay value and a corresponding propagation delay.

主权项

1. A method comprising:
transmitting a delay value to each of a plurality of digital subscriber line (DSL) transceivers, by a distribution point unit (DPU), wherein the delay value comprises a gap time at a U-interface of a plurality of second DSL transceivers at the DPU to be applied to a time-division duplex (TDD) frame transmission; and receiving, by the DPU from the plurality of DSL transceivers, a plurality of signals comprising a plurality of lines of upstream discrete multitone modulation (DMT) symbols aligned at the U-interface of the plurality of second DSL transceivers, wherein the plurality of lines of upstream DMT symbols are transmitted at different times within a TDD frame period based on the delay value and a corresponding propagation delay.