US 11,917,455 B2
Transmission parameter control method, control station and radio base station
Toshiro Nakahira, Musashino (JP); Tomoki Murakami, Musashino (JP); Hirantha Abeysekera, 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. 17/441,743
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Mar. 16, 2020, PCT No. PCT/JP2020/011493
§ 371(c)(1), (2) Date Sep. 22, 2021,
PCT Pub. No. WO2020/196038, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-063477 (JP), filed on Mar. 28, 2019.
Prior Publication US 2022/0182887 A1, Jun. 9, 2022
Int. Cl. H04W 28/22 (2009.01)
CPC H04W 28/22 (2013.01) 8 Claims
OG exemplary drawing
 
1. A transmission parameter control method in a radio communication system that performs, between a radio base station and a plurality of radio terminal stations, communication of a first method in which reception confirmation is enabled and communication of a second method in which reception confirmation is not possible,
wherein
the communication of the first method is unicast communication, and the communication of the second method is multicast communication or broadcast communication, and
wherein the radio base station selects transmission parameters in the communication of the second method with the radio terminal stations, based on radio communication information in the communication of the first method with the radio terminal stations,
wherein transmission parameters include all of a modulation level, a length of guard interval, a number of transmission streams, bandwidth, and an error method.