Title:
RADIO COMMUNICATION SYSTEM, RELAY DEVICE, RADIO COMMUNICATION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/137527
Kind Code:
A1
Abstract:
This relay device is provided with a reception unit, a received waveform recording unit, an antenna number determination unit, and a transmission unit. The reception unit receives a first signal of radio transmitted from a first communication device using a plurality of reception antennas. The received waveform recording unit generates waveform data of the first signal received by each reception antenna. The antenna number determination unit determines the number of reception antennas according to a relay device position on the basis of information on communication quality between the first communication device and the relay device at the relay device position. The transmission unit transmits a second signal representing the waveform data of the first signal received by each reception antenna of the number determined by the antenna number determination unit according to the relay device position. The second communication device performs reception processing of the second signal received from the relay device to acquire the waveform data and performs reception processing of the first signal represented by the acquired waveform data to acquire data.
Inventors:
SAKAMOTO KAZUMITSU (JP)
FUJINO YOSUKE (JP)
GOTO DAISUKE (JP)
KOJIMA YASUYOSHI (JP)
ITOKAWA KIYOHIKO (JP)
FUJINO YOSUKE (JP)
GOTO DAISUKE (JP)
KOJIMA YASUYOSHI (JP)
ITOKAWA KIYOHIKO (JP)
Application Number:
PCT/JP2020/048810
Publication Date:
June 30, 2022
Filing Date:
December 25, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B7/155; H04B7/185
Foreign References:
| JP2020502858A | 2020-01-23 | |||
| JP2020517161A | 2020-06-11 | |||
| JP2019047262A | 2019-03-22 |
Other References:
ANONYMOUS: "Technological Demonstration Proposal for Realization of "Low Earth Orbit Satellite-to-Ground Communication over 20 Gbps and Ultra Wide Area IoT Data Collection" Adopted as an Innovative Satellite Technology Demonstration Theme -World 's First In-orbit Demonstration of Low Earth Orbit Satellite MIMO ", NTT, 29 May 2020 (2020-05-29), pages 1 - 5, XP055951444, Retrieved from the Internet [retrieved on 20220815]
HORIKOSHI, ISAO: "With one satellite, the entire area of Japan is covered by the IoT communication area, and NTT and JAXA overturn the common sense with a '6G' vision", NIKKEI XTECH, JP, JP, pages 1 - 2, XP009538849, Retrieved from the Internet
HORIKOSHI, ISAO: "With one satellite, the entire area of Japan is covered by the IoT communication area, and NTT and JAXA overturn the common sense with a '6G' vision", NIKKEI XTECH, JP, JP, pages 1 - 2, XP009538849, Retrieved from the Internet
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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