Patent ID: 9621242
Date: 2017-04-11
CPC Classifications: H04B,H04L,H04W

Claim:
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, data layer information relating to the data layer and interference layer information relating to 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 said data layer information relating to the data layer and a second information field including said interference layer information relating to the interference layer, and processing the data layer in accordance with said data layer information and processing the interference layer in accordance with the interference layer information for obtaining the user data at the user equipment, said processing further including determining a spatial covariance matrix of and interference source associated with the interference layer on the basis of the interference layer information, wherein the first information field of the control channel message comprises a first codeword field including said data layer information and transmitted at least in part on the data layer, and wherein the second information field of the control channel message comprises a second codeword field including the interference layer information and transmitted at least in part on a further data layer of the plurality of transmission layers.