US 2011/0256897 A1 · BASE STATION APPARATUS, USER EQUIPMENT AND PRECODING METHOD

Abstract

The present invention provides a base station apparatus capable of preventing degrading of throughput performance even when feedback information amount on precoding in uplink MIMO transmission is reduced. This base station (200) has a scheduler (231) for determining resource blocks used in wireless communications with each mobile station (100) adaptively, a precoding weight selecting section (232) for selecting a precoding weight for controlling phase and/or amplitude of a transmission signal for each antenna in the mobile station (100) based on reception quality on uplink at the resource blocks determined to the mobile station (100); and transmission/reception sections (206a and 206b) for transmitting the determined precoding weight to the mobile station (100).

Claims12

Dependent claims

A base station apparatus comprising:

a scheduler configured to assign a band made up of one or continuous resource blocks on a system bandwidth to each user equipment;
a PMI (Precoding Matrix Indicator) determining section configured to determine a PMI that is used in weighting of a transmission antenna of the user equipment for every band assigned to the user equipment;
and
a transmitter configured to transmit the PMI determined by the PMI determining section to the user equipment.

1 more element

Dependencies are inferred from the claim text.

Base station apparatus, user equipment and precoding method

Life of this patent

Base station apparatus, user equipment and precoding method

Life of this patent

Abstract

Claims12