Patent ID: 9654172
Date: 2017-05-16
CPC Classifications: H04B,H04L,H04M

Claim:
1. A method for line initialization, comprising: sending a first probe signal in a downstream direction to acquire a first precoding matrix needed by a first part of subcarriers of all available subcarriers; sending, using the first part of subcarriers, multiple data signals selected from all data signals that need to be sent in an initialization process; after the multiple data signals are sent by using the first part of subcarriers, sending, using at least a second part of subcarriers of all of the available subcarriers, a second probe signal in the downstream direction to acquire a second precoding matrix needed by the at least second part of subcarriers; and sending, using the at least second part of subcarriers, remaining data signals, exclusive of the multiple data signals, of all of the data signals that need to be sent in the initialization process, to complete line initialization.