Title:
WIRELESS BASE STATION, USER TERMINAL, AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2016/013387
Kind Code:
A1
Abstract:
The purpose of the present invention is to prevent a reduction in throughput even in cases of employing LBT in a wireless communication system that operates LTE/LTE-A etc. in an unlicensed band. Disclosed is a wireless base station that communicates with a user terminal capable of utilizing a licensed band and an unlicensed band, the wireless base station comprising: a detection unit that detects a signal transmitted from another transmission point; an acquisition unit that acquires an identification number of the transmission point corresponding to the detected signal; and a transmission unit that transmits a data signal and a demodulation reference signal in an unlicensed band. The sequence of the demodulation reference signal is associated with the identification number of the transmission point. The transmission unit notifies the user terminal of information about the identification number of the other transmission point.
Inventors:
TAKEDA KAZUAKI (JP)
HARADA HIROKI (JP)
TAKEDA KAZUKI (JP)
NAGATA SATOSHI (JP)
HARADA HIROKI (JP)
TAKEDA KAZUKI (JP)
NAGATA SATOSHI (JP)
Application Number:
PCT/JP2015/069332
Publication Date:
January 28, 2016
Filing Date:
July 03, 2015
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04W48/08; H04M11/00; H04W74/08; H04W88/06
Domestic Patent References:
| WO2010073468A1 | 2010-07-01 | |||
| WO2014109105A1 | 2014-07-17 |
Foreign References:
| JP2014500685A | 2014-01-09 |
Other References:
CISCO: "On LTE in Unlicensed Spectrum", 3GPP TSG-RAN#62 RP-131749, XP050733900, Retrieved from the Internet
See also references of EP 3174340A4
See also references of EP 3174340A4
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (JP)
Hiroyoshi Aoki (JP)
Hiroyoshi Aoki (JP)
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