Performing Upstream Symbol Alignment Under FEXT

摘要

A method for implementing an upstream symbol alignment within a network component, the method comprising receiving an upstream sync signal via an initializing digital subscriber line (DSL) during a channel discovery phase from a customer premise equipment (CPE), determining a corrected upstream symbol alignment value based upon the upstream sync signal, and transmitting the corrected upstream symbol alignment value to the CPE, wherein the upstream symbol alignment value determines an upstream symbol alignment for one or more upstream transmissions, and wherein the corrected upstream symbol alignment value is determined before receiving a plurality of upstream data signals within the data symbol positions during the channel discovery phase.

主权项

1. An apparatus comprising:
a first transceiver unit (TU) for coupling to a first initializing digital subscriber line (DSL); a memory; and a processor coupled to the memory and the first TU, wherein the memory includes instructions that when executed by the processor cause the apparatus to perform the following:
receive an upstream sync signal via the first TU;determine a correction value that corresponds to an upstream symbol alignment for the first initializing DSL using the upstream sync signal; andtransmit the correction value in a downstream direction via the first TU, wherein the correction value is determined prior to receiving a plurality of upstream signals located in a plurality of data symbol positions.