Scheme system and method for power saving in vectored communications

摘要

A transmission scheme for a plurality of transceiver pairs, the transmission scheme including a partition of at least a downlink transmission portion of a data transmission frame into a plurality of precoding intervals, each precoding interval being associated with a respective active group of transceiver pairs, each active group of transceiver pairs including a plurality of transceiver pairs, each precoding interval terminating no earlier than the end of a respective downlink data transmission period associated with at least one of the transceiver pairs in the respective transceiver active group, wherein, a different respective precoder is associated with each the active groups and wherein, at least the transmitting ports of the first transceivers, which are not members of an active group, turn off.

主权项

1. A transmission method employing a transmission scheme for a plurality of transceiver pairs, each transceiver pair including a first transceiver and a second transceiver, each transceiver including a transmitter and a receiver, each said transceiver pairs defining a downlink between the transmitter of a first transceiver and the receiver of a second transceiver and further defining an uplink between the transmitter of said second transceiver and the receiver of said first transceiver, said transmitter of said first transceiver includes a pre-precoder coupled with the input of a precoder and a transmitting port coupled with the output of said precoder and with said receiver of said second transceiver, each transceiver pair transmitting data over at least a portion of a data transmission frame, said data transmission frame being partitioned into a downlink transmission portion and an uplink transmission portion, said transmission method including the steps of:
partitioning at least said downlink transmission portion of said data transmission frame into a plurality of precoding intervals, each precoding interval being associated with a respective active group of transceiver pairs, each active group of transceiver pairs including a plurality of transceiver pairs, each precoding interval terminating no earlier than the end of a respective downlink data transmission period associated with at least one of the transceiver pairs in the respective transceiver active group; and transmitting by each said transceiver pair according to said transmission scheme, whereby each said transceiver pair transmits a residual cancellation signal during said precoding interval when the duration of said respective precoding interval is longer than said respective downlink data transmission period and when said downlink data transmission period and said respective precoding interval do not overlap one with the other, wherein, a different respective precoder is associated with each said active groups, and wherein, at least the transmitting ports of the first transceivers, which are not members of an active group, turn off.