Patent ID: 9294310
Filing Date: 2016-03-22
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method comprising: determining a rank indicator (RI); determining a precoding matrix index (PMI); determining a channel quality indicator (CQI) according to the PMI and RI; and reporting information corresponding to the RI, PMI or CQI to a wireless network, wherein the RI, PMI or CQI is determined based on channel covariance estimation, and the channel covariance estimation is performed using a first channel covariance matrix based upon a number of receive antennas in a User Equipment (UE) device being greater than or equal to a number of transmit antennas in a network node, and a second channel covariance matrix based upon the number of receive antennas in the UE being less than the number of transmit antennas in the network node, wherein the first channel covariance matrix is defined by the expectation of a channel matrix multiplied by a conjugate transpose of the channel matrix for a given resource element number, and the second channel covariance matrix is defined by expectation of the conjugate transpose of the channel matrix multiplied by the channel matrix for the given resource element number.