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 receive first information on which of uplink transmission time units is enabled to transmit an uplink reference signal and second information on a sequence used for the uplink reference signal from a base station. The above first information is differently determined to second UE group other than a first UE group including the first UE. And, the second information is determined to assign orthogonal sequences to the first UE group.

主权项

1. A method for a first user equipment (UE) to operate in a wireless communication system employing a massive MIMO (Multiple Input Multiple Output) scheme, the method comprising:
receiving first information on which of uplink transmission time units is enabled to transmit an uplink reference signal and second information on a sequence used for the uplink reference signal from a base station, wherein the first information is differently determined to second UE group other than a first UE group including the first UE, wherein the second information is determined to assign orthogonal sequences to the first UE group; and transmitting the uplink reference signal to a base station at an uplink transmission time unit identified by the first information using the sequence identified by the second information.