Title:
通信システム、基地局装置、端末装置
Document Type and Number:
Japanese Patent JP5703057
Kind Code:
B2
Abstract:
In a communication system, a first cell that covers a wide region includes, in a cover region thereof, a second cell that covers a smaller region than the first cell, one first terminal device or more positioned in the first cell receive a signal on which precoding has been performed and that is transmitted by a first base station apparatus that controls the first cell, and one second terminal device or more positioned in the second cell receive a signal on which precoding has been performed and that is transmitted using the same frequency as in the first cell by a second base station apparatus that controls the second cell. The communication system determines the number of streams to be transmitted by the second base station apparatus on the basis of information regarding the number of streams to be transmitted by the first base station apparatus. As a result, in a system in which interference between cells exists, interference may be reduced with a simple structure using transmit and receive filters.
Inventors:
Hirata Kozue
Shinpei Fuji
Shinpei Fuji
Application Number:
JP2011032556A
Publication Date:
April 15, 2015
Filing Date:
February 17, 2011
Export Citation:
Assignee:
Sharp Corporation
International Classes:
H04W16/28; H04J99/00; H04W16/32; H04W88/08
Domestic Patent References:
| JP2010278674A | ||||
| JP2010522516A |
Foreign References:
| WO2010122749A1 | ||||
| WO2009120048A2 | ||||
| WO2010090408A2 |
Other References:
NTT DOCOMO,Inter-cell Radio Resource Management for Heterogeneous Networks,3GPP R1-094246,3GPP,2009年10月12日
Samsung,Performance Evaluation of Femto-based HetNet,3GPP R1-102223,3GPP,2010年 4月12日
Samsung,Performance Evaluation of Femto-based HetNet,3GPP R1-102223,3GPP,2010年 4月12日
Attorney, Agent or Firm:
Yusuke Hiraki
Toshiaki Watanabe
Kenichi Imamura
Toshiaki Watanabe
Kenichi Imamura