US 11,917,682 B2
Wireless LAN system and interference control method
Kenichi Kawamura, Musashino (JP); Yasushi Takatori, Musashino (JP); Tomoyuki Yamada, Musashino (JP); Hiroshi Nakamoto, Musashino (JP); Keisuke Wakao, Musashino (JP); and Shota Nakayama, Musashino (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/292,703
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Nov. 8, 2019, PCT No. PCT/JP2019/043849
§ 371(c)(1), (2) Date May 10, 2021,
PCT Pub. No. WO2020/100735, PCT Pub. Date May 22, 2020.
Claims priority of application No. 2018-213122 (JP), filed on Nov. 13, 2018.
Prior Publication US 2022/0007419 A1, Jan. 6, 2022
Int. Cl. H04W 4/00 (2018.01); H04L 1/1867 (2023.01); H04W 84/12 (2009.01)
CPC H04W 74/0816 (2013.01) [H04L 1/1896 (2013.01); H04W 84/12 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A wireless LAN system in which, in the surroundings of a wireless LAN base station and a wireless LAN terminal that perform communication with each other, there is an interfering AP/STA that is to transmit an interference signal, comprising: an interference control signal transmitter that is provided in the surroundings of the wireless LAN base station and the wireless LAN terminal, and is configured to collect wireless environment information regarding the interfering AP/STA, and transmit, to the interfering AP/STA, an interference control signal that is to be used to set a transmission waiting period; and an interference control signal management device configured to collect the wireless environment information from the interference control signal transmitter, determine the interference control signal transmitter whose communication area includes the interfering AP/STA based on the wireless environment information, and control the determined interference control signal transmitter to transmit the interference control signal to be used to set the transmission waiting period that corresponds to a length of time of the communication between the wireless LAN base station and the wireless LAN terminal, wherein while the interfering AP/STA that has received the interference control signal sets the transmission waiting period, the wireless LAN base station and the wireless LAN terminal preferentially perform communication.