US 12,335,020 B2
Radio communication apparatus, and radio communication method
Riku Omiya, Musashino (JP); Tomoki Murakami, Musashino (JP); Koichi Ishihara, Musashino (JP); Takafumi Hayashi, Musashino (JP); and Yasushi Takatori, Musashino (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/625,873
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Aug. 23, 2019, PCT No. PCT/JP2019/033136
§ 371(c)(1), (2) Date Jul. 8, 2022,
PCT Pub. No. WO2021/038645, PCT Pub. Date Mar. 4, 2021.
Prior Publication US 2022/0360318 A1, Nov. 10, 2022
Int. Cl. H04W 16/26 (2009.01); H04B 7/155 (2006.01); H04W 16/28 (2009.01)
CPC H04B 7/15542 (2013.01) [H04W 16/26 (2013.01); H04W 16/28 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A wireless communication system including, a primary transmitting station and a primary receiving station which are being in communication, a secondary transmitting station and one or more secondary receiving stations which use an identical frequency that are used by the primary transmitting station and the primary receiving station, the one or more secondary receiving stations including a secondary receiving station serving as a destination, the secondary receiving station serving as the destination receiving a transmitted signal from the secondary transmitting station, the wireless communication system comprising:
a plurality of relay stations located between the secondary transmitting station and the one or more secondary receiving stations, wherein
the secondary transmitting station is configured to execute to:
transmit control signals that cause the signal strengths to be measured at the secondary receiving stations and the primary receiving station for each combination of the one or more relay stations to be turned on:
store the signal strengths fed back via the relay stations responding to the control signals;
select at least one relay station that relays the transmitted signal from among the plurality of relay stations based on the signal strengths in accordance with the secondary receiving station serving as the destination;
add information for turning on the at least one selected relay station to the transmitted signal; and
transmit the transmitted signal,
the at least one selected relay station is configured to be turned on in accordance with the information of the transmitted signal to perform a non-regenerative relay of the transmitted signal, and
the secondary receiving station serving as the destination is configured to receive the transmitted signal relayed via the at least one relay station that is turned on.