US 11,930,511 B2
Wireless communication apparatus and wireless communication method
Shigeru Sugaya, Tokyo (JP); and Yuichi Morioka, Tokyo (JP)
Assigned to SONY CORPORATION, Tokyo (JP)
Appl. No. 17/267,035
Filed by Sony Corporation, Tokyo (JP)
PCT Filed Jun. 25, 2019, PCT No. PCT/JP2019/025062
§ 371(c)(1), (2) Date Feb. 9, 2021,
PCT Pub. No. WO2020/036003, PCT Pub. Date Feb. 20, 2020.
Claims priority of application No. 2018-153176 (JP), filed on Aug. 16, 2018.
Prior Publication US 2021/0314940 A1, Oct. 7, 2021
Int. Cl. H04W 72/29 (2023.01); H04W 72/0453 (2023.01); H04W 84/12 (2009.01)
CPC H04W 72/29 (2023.01) [H04W 72/0453 (2013.01); H04W 84/12 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A wireless communication apparatus serving as an access point (AP) of a first wireless local area network (WLAN), the wireless communication apparatus comprising:
a transceiver; and
control circuitry configured to
receive, from a station (STA) in the first WLAN, a first channel notification signal including information regarding a channel used in an Overlap Basic Service Set (OBSS) of a second WLAN different from the first WLAN;
determine, from a predetermined list of possible channels, a frequency band of a channel of a Basic Service Set (BSS) to be used in the first WLAN based on the information regarding the channel used in the OBSS in the second WLAN;
generate a second channel notification signal including information regarding the determined frequency band of the BSS to be used;
transmit the second channel notification signal to the STA in the first WLAN;
receive a response to the second channel notification signal from the STA in the first WLAN; and
communicate with other devices of the first WLAN in accordance with the BSS, wherein
the first channel notification signal includes:
a first announce type indicating that the information regarding the channel used in the OBSS was received by the STA from a STA in the second WLAN, or
a second announce type, different from the first announce type, indicating that the information regarding the channel used in the OBSS was received by the STA from an AP in the second WLAN,
the second channel notification signal includes a third announce type, different from the first and second announce types, indicating that the second channel notification signal is related to channel usage in the first WLAN,
the response from the STA in the first WLAN includes a fourth announce type, different from the first, second and third announce types, indicating that the STA in the first WLAN has assigned one or more frequencies according to the BSS,
the information regarding the channel used in the OBSS comprises:
first information regarding a primary channel used in the OBSS, and
second information regarding at least one secondary channel used in the OBSS,
the determined frequency band comprises:
a frequency band of a primary channel of the BSS that is farthest, in terms of frequency, from a frequency band of the primary channel used in the OBSS, and
a frequency band of at least one secondary channel of the BSS.