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Title:
WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, AND WIRELESS COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/251379
Kind Code:
A1
Abstract:
This wireless communication system has a first wireless communication device and a second wireless communication device. The first wireless communication device communicates wirelessly with the second wireless communication device via one or more first antennas. The second wireless communication device communicates wirelessly with the first wireless communication device via one or more second antennas. A control unit provided to the wireless communication system performs control so as to change: a first antenna, among individual first antennas of each of a plurality of the first wireless communication device, that communicates wirelessly with the second wireless communication device; and/or a second antenna, among a plurality of second antennas of the second wireless communication device, that communicates wirelessly with the first wireless communication device, said control being performed so as to maximize communication quality on the basis of the communication quality between the selected first antenna and second antenna at individual points in time, as calculated using movement schedule information indicating the position of the first wireless communication device at individual points in time and the position of the second antennas.

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Inventors:
GOTO DAISUKE (JP)
YAMASHITA FUMIHIRO (JP)
ITOKAWA KIYOHIKO (JP)
KOJIMA YASUYOSHI (JP)
KATO CHIHAYA (JP)
NAKADAI MITSUHIRO (JP)
Application Number:
PCT/JP2021/021742
Publication Date:
December 16, 2021
Filing Date:
June 08, 2021
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
JAPAN AEROSPACE EXPLORATION (JP)
International Classes:
H04B7/024; H04B7/06; H04B7/08; H04B7/185
Domestic Patent References:
WO2015114715A12015-08-06
Foreign References:
JP2000115049A2000-04-21
JP2013187867A2013-09-19
JP2019537877A2019-12-26
JP2006148482A2006-06-08
JP2020036070A2020-03-05
JP2020022650W2020-06-09
Other References:
GOTO, DAISUKE, YAMASHITA, FUMIHIRO,: "Capacity evaluation under channel estimation using unique word in multi-satellite/multi-beam MIMO systems", IEICE TECHNICAL REPORT, IEICE, vol. 117, no. 174, SAT2017-34, 10 August 2017 (2017-08-10), XP009532741
ALEXEI GOROKHOVDHANANJAY A. GOREAROGYASWAMI J. PAULRAJ: "Receive Antenna Selection for MIMO Spatial Multiplexing: Theory and Algorithms", IEEE TRANSACTIONS ON SIGNAL PROCESSING, vol. 51, no. 11, 2003, pages 2796 - 2807, XP011102796, DOI: 10.1109/TSP.2003.818204
SHAHAB SANAYEIARIA NOSRATINIA: "Antenna Selection in MIMO Systems", IEEE COMMUNICATIONS MAGAZINE, vol. 42, no. 1 0, 2004, pages 68 - 73, XP055195637, DOI: 10.1109/MCOM.2004.1341263
C. KATOM. NAKADAID. GOTOH. SHIBAYAMAF. YAMASHITA: "Channel Capacity Analysis of Satellite MIMO System Depending on the Orbital Altitude", AIAA INTERNATIONAL COMMUNICATION SATELLITE SYSTEMS CONFERENCE, October 2019 (2019-10-01)
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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