Patent ID: 9398590
Filing Date: 2016-07-19
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A mobile terminal device comprising: a feedback control signal generator that individually performs channel coding for a first precoding matrix indicator (PMI) selected from a first codebook for wideband and a second PMI selected from a second codebook for subband; and a transmitter that transmits the individually channel-coded first and second PMIs to a radio base station apparatus on a physical uplink shared channel (PUSCH), wherein the feedback control signal generator performs, in multiple-user multiple input multiple output (MU-MIMO) transmission, channel coding for the first PMI at a channel coding rate lower than that of the second PMI, and performs, in single-user MIMO (SU-MIMO) transmission, channel coding for the second PMI at a channel coding rate lower than that of the first PMI.