Title:
RADIO COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/194423
Kind Code:
A1
Abstract:
Provided is a radio communication device capable of efficiently transmitting a plurality of different types of data at the same frequency and time. The radio communication device is provided with: an antenna unit 19 which outputs an upper layer (UL) beam and a lower layer (LL) beam into space at the same frequency and time; an upper IL control unit 13 and a lower IL control unit 14 which respectively adjust the power ratio of the UL beam and the LL beam; and an upper-layer amplitude/phase control unit 15 and a lower-layer amplitude/phase control unit 16 which respectively control the widths of the UL and LL beams. The upper-layer amplitude/phase control unit 15 and the lower-layer amplitude/phase control unit 16 perform control to reduce the width of the UL beam and increase the width of the LL beam. In addition, the upper IL control unit 13 and the lower IL control unit 14 perform adjustment such that radiated power of the UL beam becomes greater than the radiated power of the LL beam and the difference between the radiated power of the two is greater than or equal to a predetermined power difference in the transmission direction of the UL beam and the range of the width of the UL beam.
Inventors:
NAKADA TATSUHIRO (JP)
TAKEYARI RYOJI (JP)
TAKEYARI RYOJI (JP)
Application Number:
PCT/JP2019/012378
Publication Date:
October 01, 2020
Filing Date:
March 25, 2019
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC (JP)
International Classes:
H04J99/00; H04B7/0452
Domestic Patent References:
| WO2018008212A1 | 2018-01-11 |
Foreign References:
| JP2018523353A | 2018-08-16 | |||
| JP2008547283A | 2008-12-25 | |||
| JP2015062267A | 2015-04-02 | |||
| US20180083357A1 | 2018-03-22 | |||
| JPS5773506A | 1982-05-08 | |||
| JP2018516476A | 2018-06-21 | |||
| JP2014154962A | 2014-08-25 |
Attorney, Agent or Firm:
TAMURA Chikashi et al. (JP)
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