METHOD AND DEVICE FOR EFFICIENT CHANNEL STATE INFORMATION DISTRIBUTION FOR MU-MIMO TRANSMISSION SCHEME BASED ON OLD CHANNEL STATE INFORMATION

摘要

PROBLEM TO BE SOLVED: To obtain a method and a device for channel state information distribution of multiuser MIMO transmission scheme based on old channel state information.;SOLUTION: This method includes a step of acquiring a first channel estimate of downlink channel between a base station and a first user terminal by the first user terminal, from at least one downlink pilot transmitted in the first time frequency block having data toward a second user terminal different from the first user terminal, a step of acquiring a second channel estimate of downlink channel between the base station and the second user terminal by the second user terminal, from at least one downlink pilot transmitted in the second time frequency block having data toward the first user terminal, and a step of transmitting a linear combination of the first and second channel estimates in a third time frequency block.;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2019,JPO&INPIT