Feedback and user scheduling for multi-user multiple input multiple output (MU-MIMO) system

摘要

Some of the embodiments of the present disclosure provide a method comprising selecting, by a user equipment (UE), a preferred interference precoding matrix from a plurality of candidate precoding matrices included in a codebook; and transmitting, by the user equipment to a communication node, a preferred interference precoding matrix index (PMI) corresponding to the preferred interference precoding matrix included in the codebook. Other embodiments are also described and claimed.

主权项

1. A method comprising:
selecting, by a user equipment, a preferred interference precoding matrix from among a plurality of candidate precoding matrices included in a codebook, wherein the preferred interference precoding matrix is associated with a direction such that when a communication node transmits a signal in the direction associated with the preferred interference precoding matrix, an interference power component of the transmitted signal received by the user equipment is low; determining, by the user equipment, a plurality of signal directions corresponding to precoding matrices that are different from the direction associated with the preferred interface precoding matrix; estimating, by the user equipment, for ones of the plurality of signal directions, a corresponding signal to noise ratio (SNR) for signals transmitted from the communication node to the user equipment in the corresponding signal direction; and transmitting, by the user equipment to the communication node, (i) an identification of the preferred interference precoding matrix, and (ii) the estimated SNRs corresponding to ones of the plurality of signal directions.