Telefonaktiebolaget LM Ericsson (publ)
METHOD AND NETWORK NODE FOR GENERATING AND SELECTING A CODEBOOK IN A MIMO COMMUNICATION NETWORK

Abstract:

A method in a network node for Multiple Input Multiple Output (MIMO) is provided. The method comprises: obtaining a precoding matrix indicator (PMI) for a first codebook for use in a Single User Multiple Input Multiple Output (SU-MIMO) transmission; determining a precoding matrix for a second codebook, based on the obtained precoding matrix indicator; and selecting the determined precoding matrix for the second codebook in response to determining that an User Equipment (UE) is scheduled for a Multi-User (MU)-MIMO transmission. A network node for performing this method is also provided.