Title:
無線通信システムにおいてチャネル状態情報をフィードバックする端末装置及びその方法
Document Type and Number:
Japanese Patent JP5864655
Kind Code:
B2
Abstract:
A method and apparatus are described for transmitting a channel state information (CSI) reporting at a user equipment (UE) in a wireless communication system. A rank indicator (RI) and a first type precoding matrix indicator (PMI) are transmitted to a base station (BS) according to a first CSI feedback type. A second type PMI and a channel quality information (CQI) are transmitted to the BS according to a second CSI feedback type. The RI and the first type PMI are jointly coded, and transmitted through a physical uplink control channel (PUCCH). A reporting period of the first type PMI is longer than a reporting period of the second type PMI. The first type PMI is a wideband PMI, and the second type PMI is a subband PMI. The reporting period of the first type PMI is equal to a reporting period of the RI.
Inventors:
Kim Hyun Tae
Theo Han Byul
Kim Ki Jun
Reda Wong
Theo Han Byul
Kim Ki Jun
Reda Wong
Application Number:
JP2014078376A
Publication Date:
February 17, 2016
Filing Date:
April 07, 2014
Export Citation:
Assignee:
LG ELECTRONICS INC.
International Classes:
H04J99/00; H04B7/04
Domestic Patent References:
| JP2007274094A |
Foreign References:
| US20090201825 | ||||
| WO2010013950A2 |
Other References:
Ericsson,Rank Override Support for Precoder Confirmation, 3GPP TSG-RAN WG1#52b R1-081540,2008年 4月 4日
Samsung,Relationship of Rank Report and PUCCH CQI/PMI reports, 3GPP TSG-RAN WG1#53 R1-081746,2008年 5月 9日
Samsung,Relationship of Rank Report and PUCCH CQI/PMI reports, 3GPP TSG-RAN WG1#53 R1-081746,2008年 5月 9日
Attorney, Agent or Firm:
Hidesaku Yamamoto
Natsuki Morishita
Natsuki Morishita