GROUPING BASED REFERENCE SIGNAL TRANSMISSION FOR MASSIVE MIMO SCHEME

摘要

Grouping based reference signal transmission scheme for massive MIMO is disclosed. UEs are grouped and each UE group receives information on a sequence used for the uplink reference signal from a base station. The information is determined to assign orthogonal sequences to UEs within a UE group considering at least one or more of a number of orthogonal sequences, a number of the UEs within the UE group, amount of information to be transmitted, channel condition between the base station and each UE, and a number of sequences assigned to each UE of the UEs.