US 11,736,255 B2
Wireless communication device, wireless communication terminal, and wireless communication method
Ryuichi Hirata, Kanagawa (JP); Yuichi Morioka, Kanagawa (JP); and Kosuke Aio, Kanagawa (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Filed by Sony Group Corporation, Tokyo (JP)
Filed on Aug. 8, 2022, as Appl. No. 17/882,615.
Application 17/882,615 is a continuation of application No. 16/959,678, granted, now 11,431,452, previously published as PCT/JP2018/048421, filed on Dec. 28, 2018.
Claims priority of application No. 2018-003164 (JP), filed on Jan. 12, 2018.
Prior Publication US 2022/0386377 A1, Dec. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/08 (2009.01); H04L 5/00 (2006.01); H04W 74/02 (2009.01); H04W 72/23 (2023.01)
CPC H04L 5/0048 (2013.01) [H04L 5/0064 (2013.01); H04W 72/23 (2023.01); H04W 74/02 (2013.01); H04W 74/0816 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A wireless communication device in a wireless communication system including the wireless communication device, that functions as a base station or an access point, and one or more wireless communication terminals that communicate with the wireless communication device as slave units, the wireless communication device comprising:
a transceiver; and
control circuitry configured to:
transmit a DL packet during a downlink transmission period, the DL packet including propriety information that indicates whether or not reception of any uplink (UL) packet to be transmitted from the one or more wireless communication terminals is possible during a downlink transmission period, the downlink transmission period being a period when the wireless communication device transmits a downlink (DL) packet;
while transmitting the DL packet during the downlink transmission period, determine whether or not at least one UL packet was received from one of the one or more wireless communication terminals:
upon determining that no UL packet was received from one of the one or more wireless communication terminals while transmitting the DL packet during the downlink transmission period, re-set the propriety information to indicate that reception of any uplink (UL) packet to be transmitted from the one or more wireless communication terminals is possible; or
upon determining that at least one UL packet was received from one of the one or more wireless communication terminals while transmitting the DL packet during the downlink transmission period, re-set the propriety information to indicate that reception of any uplink (UL) packet to be transmitted from the one or more wireless communication terminals is not possible; and
terminate the transmitting of the DL packet after performing any re-setting of the propriety information based on the determining whether or not the at least one UL packet was received from the one of the one or more wireless communication terminals.