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.

主权项

1. A method for a user equipment (UE) to operate in a wireless communication system employing a massive MIMO (Multiple Input Multiple Output) scheme, the method comprising:
receiving information on a sequence to be used for an uplink reference signal from a base station, wherein 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; and transmitting the uplink reference signal to the base station using the sequence identified by the second information.