Patent ID: 9088642
Filing Date: 2015-07-21
Classification: H04B,H04L,H04M,H04W

Abstract:
1. A communication system, comprising: a first line card having a first transceiver coupled to a first subscriber line, and a second line card having a second transceiver coupled to a second subscriber line, the second transceiver configured to communicate across the second subscriber line at a data rate during a data phase that follows a training phase, the second line card having vector logic configured to perform vectoring, based on at least one vectoring coefficient, to cancel from a signal communicated across the second subscriber line crosstalk induced by a signal communicated across the first subscriber line, the vector logic configured to update the vectoring coefficient based on vectoring information from the first line card, wherein the data rate is selected in the training phase, wherein the vector logic is configured to disable the vectoring in response to a detection of a vectoring fault that prevents the second line card from receiving vectoring information from the first line card, and wherein the second line card has control logic configured to adjust the data rate at which the second transceiver communicates across the second subscriber line in response to the detection of the vectoring fault without the second transceiver performing a retrain.