Title:
無線基地局装置、移動端末装置、無線通信方法及び無線通信システム
Document Type and Number:
Japanese Patent JP5599481
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a radio base station device, a mobile terminal device, and a radio communication method for transmitting and receiving a channel quality measurement reference signal of a downlink, while taking into account the orthogonalization among transmission antennas, orthogonalization between cells and high-precision estimation of interference.SOLUTION: In this radio communication method, the radio base station device generates channel quality measurement reference signals; executes non-orthogonalization processing to the channel quality measurement reference signals so as to cause non-orthogonalization between at least some cells, allowing the channel quality measurement reference signals to be orthogonal between the transmission antennas; transmits the reference signal to the mobile terminal device, together with control information, and the mobile terminal device receives downlink signals containing control information and channel-quality measurement reference signals; extracts the channel-quality measurement reference signals by using the control information; and measures the channel quality by using the channel quality measurement reference signals.
Inventors:
岸山 祥久
Kazuaki Takeda
Yusuke Owatari
Kazuaki Takeda
Yusuke Owatari
Application Number:
JP2013056682A
Publication Date:
October 01, 2014
Filing Date:
March 19, 2013
Export Citation:
Assignee:
NTT DoCoMo, Inc.
International Classes:
H04J99/00; H04B7/04; H04J1/00; H04J11/00; H04W72/04
Attorney, Agent or Firm:
Hiroyoshi Aoki
Masayuki Amada
Yoshitaka Moriya
Masayuki Amada
Yoshitaka Moriya