US 12,445,902 B2
Communication device, communication method thereof, information processing device, control method thereof, and computer-readable storage medium
Yuki Fujimori, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Aug. 6, 2021, as Appl. No. 17/395,498.
Application 17/395,498 is a continuation of application No. PCT/JP2020/004258, filed on Feb. 5, 2020.
Claims priority of application No. 2019-036402 (JP), filed on Feb. 28, 2019.
Prior Publication US 2021/0368391 A1, Nov. 25, 2021
Int. Cl. H04W 28/06 (2009.01); H04W 28/16 (2009.01); H04W 76/15 (2018.01)
CPC H04W 28/06 (2013.01) [H04W 28/16 (2013.01); H04W 76/15 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A communication device that operates as an access point (AP) and transmits a radio frame including a preamble and a data field of a physical layer (PHY):
wherein the preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), and a second Signal field, and
the second Signal field includes a subfield that consists of 2 bits and includes information indicating whether a coordinated transmission of data to a single partner device that operates as a station (STA) is performed by a plurality of access points; and
wherein the subfield indicates, by using said 2 bits, the information in accordance with a number of logical access points that transmit data.