Title:
BASE STATION DEVICE, TERMINAL AND COMMUNICATION METHOD
Document Type and Number:
Japanese Patent JP2020039073
Kind Code:
A
Abstract:
To provide a base station device, a terminal and a communication method improving throughput, and frequency utilization efficiency, by flexible transmission control in a space region.SOLUTION: A terminal includes a measurement part 205 to find CSI on the basis of CSI report setting and CSI-RS, and a transmission section 203 transmitting the CSI to a base station device. The CSI report setting includes a codebook setting and the CQI number of every report, and when the code book setting shows a type 1 codebook, the CQI number of every report is 2, and a rank index (RI) is 4 or more, channel quality indicators of two code words are found, when the codebook setting shows a type 2 codebook, the CQI number of every report is 2, and the RI is 2 or more, the CQI of two code words are found, and a CSI containing a precoding matrix index found in the type 1 codebook or type 2 codebook, RI and CQI is transmitted.SELECTED DRAWING: Figure 3
Inventors:
YAMADA RYOTA
TOMEBA HIROMICHI
NANBA HIDEO
TOMEBA HIROMICHI
NANBA HIDEO
Application Number:
JP2018165979A
Publication Date:
March 12, 2020
Filing Date:
September 05, 2018
Export Citation:
Assignee:
SHARP KK
International Classes:
H04B7/0417; H04B7/0456; H04B17/24; H04B17/309; H04L27/26; H04W24/10; H04W72/04
Attorney, Agent or Firm:
Hiroyuki Katata