Title:
RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD
Document Type and Number:
Japanese Patent JP2018133733
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a radio communication system and a radio communication method that reliably determine a beam direction and enable communication having a stable main signal.SOLUTION: A radio communication system includes a plurality of radio stations. Each of at least two radio stations out of the plurality of radio stations includes: a first antenna for transmitting a radio wave at a first frequency band; a second antenna for transmitting a radio wave at a second frequency band lower in frequency than the first frequency band; a first transmission/reception unit for transmitting and receiving a main signal at the first frequency band; and a second transmission/reception unit for transmitting and receiving a control signal at the second frequency band. At least one radio station out of the at least two radio stations includes: a variable beam antenna capable of changing a beam direction as the first antenna; a wide-angle antenna having a radiation range equal to or more than a variable range of a beam direction as the second antenna; and a control unit for controlling the beam direction of the variable beam antenna on the basis of the control signal.SELECTED DRAWING: Figure 2
Inventors:
KOBAYASHI KIYOSHI
KAN YASUSHI
KAN YASUSHI
Application Number:
JP2017027041A
Publication Date:
August 23, 2018
Filing Date:
February 16, 2017
Export Citation:
Assignee:
FUJIKURA LTD
International Classes:
H01Q3/26; H04B7/06; H01Q21/28; H04W88/02
Domestic Patent References:
| JP2008219503A | 2008-09-18 | |||
| JP2016528830A | 2016-09-15 |
Foreign References:
| US20140148107A1 | 2014-05-29 | |||
| WO2011055536A1 | 2011-05-12 | |||
| US20140206406A1 | 2014-07-24 |
Attorney, Agent or Firm:
Masatake Shiga
Sumio Tanai
Mitsunaga Igarashi
Toshio Komuro
Yuichiro Shimizu
Sumio Tanai
Mitsunaga Igarashi
Toshio Komuro
Yuichiro Shimizu