Title:
WIRELESS BASE STATION, USER TERMINAL, AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/136542
Kind Code:
A1
Abstract:
The purpose of the present invention is to improve usage efficiency of wireless resources, and suppress the impact of interference, even in cases when different DL/UL configurations are applied among neighbouring transmission/reception points. This wireless base station uses time division duplexing to communicate with user terminals, and is capable of implementing control to change DL/UL configurations. The wireless base station is provided with: a subframe-type determination unit which categorizes each subframe as a fixed subframe or a dynamic subframe in accordance with a relationship between a DL/UL configuration applied by the wireless base station and DL/UL configurations applied by other wireless base stations; and a frequency-allocation controller which respectively applies different frequency-allocation methods to the fixed subframes and the dynamic subframes.
Inventors:
NAGATA SATOSHI (JP)
HOU XIAOLIN (CN)
NA CHONGNING (CN)
HARADA ATSUSHI (CN)
HOU XIAOLIN (CN)
NA CHONGNING (CN)
HARADA ATSUSHI (CN)
Application Number:
PCT/JP2014/053268
Publication Date:
September 12, 2014
Filing Date:
February 13, 2014
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04W16/30; H04W72/04
Other References:
QUALCOMM INCORPORATED: "Interference mitigation schemes", 3GPP TSG RAN WG1 MEETING #72 R1-130586, 19 January 2013 (2013-01-19), XP050663842
SAMSUNG: "Power control in flexible subframes for eIMTA", 3GPP TSG RAN WG1 #72 R1-130290, 19 January 2013 (2013-01-19), XP050663636
INTEL CORPORATION: "Discussion on MCS mismatch between regular and flexible subframes in multi - cell outdoor Pico scenario", 3GPP TSG-RAN WG1 #69 R1-122643, 12 May 2012 (2012-05-12), XP050600828
"Feasibility Study for Evolved UTRA and UTRAN", 3GPP, TR25.912, September 2006 (2006-09-01)
See also references of EP 2966893A4
SAMSUNG: "Power control in flexible subframes for eIMTA", 3GPP TSG RAN WG1 #72 R1-130290, 19 January 2013 (2013-01-19), XP050663636
INTEL CORPORATION: "Discussion on MCS mismatch between regular and flexible subframes in multi - cell outdoor Pico scenario", 3GPP TSG-RAN WG1 #69 R1-122643, 12 May 2012 (2012-05-12), XP050600828
"Feasibility Study for Evolved UTRA and UTRAN", 3GPP, TR25.912, September 2006 (2006-09-01)
See also references of EP 2966893A4
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)
Hiroyoshi Aoki (JP)
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