Title:
BASE STATION AND TRANSMISSION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/182135
Kind Code:
A1
Abstract:
In order to perform scheduling that takes into account moving and stationary states of user terminals and in order to prevent deterioration in communication characteristics, this reception power measurement unit 103 measures the power of a reference signal from each user terminal. A moving/stationary determination unit 104 determines whether each user terminal is a moving terminal or a stationary terminal on the basis of the fluctuation over time of the reception power at each transmission point in each user terminal. A group selection unit 105 groups the user terminals into a moving terminal group and a stationary terminal group and selects one of the groups as the target for signal transmission. A transmission control unit 108 performs open loop signal processing, which does not include precoding, if the moving terminal group has been selected, and performs closed loop signal processing including precoding if the stationary terminal group has been selected.
Inventors:
OKUYAMA TATSUKI (JP)
SUYAMA SATOSHI (JP)
OKUMURA YUKIHIKO (JP)
SUYAMA SATOSHI (JP)
OKUMURA YUKIHIKO (JP)
Application Number:
PCT/JP2019/012187
Publication Date:
September 26, 2019
Filing Date:
March 22, 2019
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04W72/12; H04B7/022; H04B7/0456; H04B7/06; H04W16/28
Domestic Patent References:
| WO2008053550A1 | 2008-05-08 | |||
| WO2017154739A1 | 2017-09-14 |
Foreign References:
| JP2010537599A | 2010-12-02 | |||
| JP2018056837A | 2018-04-05 |
Other References:
See also references of EP 3771278A4
Attorney, Agent or Firm:
WASHIDA, Kimihito (JP)
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