Patent ID: 9363061
Filing Date: 2016-06-07
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method of communicating a plurality of transmission layers from at least one cell which is under the control of at least one base station to a user equipment, wherein the plurality of transmission layers includes a data layer and an interference layer which are spatially multiplexed, wherein the data layer comprises user data for the user equipment and the interference layer interferes with the data layer, the method comprising: determining, by the base station, interference layer information relating to the interference layer, comprising determining a spatial covariance matrix of an interference source associated with the interference layer; transmitting, by the base station, the data layer, the interference layer and a control channel message to the user equipment, wherein the control channel message comprises a first information field including data layer information relating to the data layer and a second information field including the interference layer information relating to the interference layer, wherein the control channel message further comprises spatial covariance matrix information representing the spatial covariance matrix; and processing the data layer in accordance with the data layer information and processing the interference layer in accordance with the interference layer information for obtaining the user data at the user equipment, wherein processing the interference layer in accordance with the interference layer information at the user equipment includes processing the interference layer in accordance with the spatial covariance matrix information; wherein the first information field comprises a first codeword field relating to a first codeword transmitted at least in part on the data layer, and wherein the second information field comprises a second codeword field including the interference layer information in a first mode and relating to a second codeword transmitted at least in part on a further data layer of the plurality of transmission layers in a second mode.