US 12,074,664 B2
Data transmission device and reception device in wireless AV system
Chijun Ahn, Seoul (KR); Jinmin Kim, Seoul (KR); Jaewook Song, Seoul (KR); and Jinsoo Choi, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/596,255
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Jun. 18, 2019, PCT No. PCT/KR2019/007299
§ 371(c)(1), (2) Date Dec. 6, 2021,
PCT Pub. No. WO2020/256166, PCT Pub. Date Dec. 24, 2020.
Prior Publication US 2022/0311479 A1, Sep. 29, 2022
Int. Cl. H04B 7/0413 (2017.01); H04B 7/0491 (2017.01); H04W 74/08 (2009.01); H04W 76/14 (2018.01); H04W 76/19 (2018.01)
CPC H04B 7/0413 (2013.01) [H04B 7/0491 (2013.01); H04W 74/08 (2013.01); H04W 76/14 (2018.02); H04W 76/19 (2018.02)] 18 Claims
OG exemplary drawing
 
1. A wireless data receiving device, comprising:
a transceiver being configured to receive data related to a video through a wireless channel from a wireless data transmitting device;
a display unit outputting the video;
a processor being configured to perform an initial connection establishment mode performing connection setup related to the wireless data transmitting device, when the transceiver is turned on, a data transfer mode receiving the data related to the video through the transceiver, a stand-by mode during which the wireless data receiving device or wireless data transmitting device is deactivated, and a connection re-establishment mode performing connection setup related to the wireless data transmitting device, when the wireless data receiving device and wireless data transmitting device are activated; and
a memory being configured to store operation algorithm and control information of an operation that is performed in at least one of the initial connection establishment mode, the data transfer mode, the stand-by mode, and the connection re-establishment mode, and to be connected to the processor so as to store the data related to the video according to instructions made by the processor,
wherein the initial connection establishment mode includes scanning and initialization, and the connection setup,
wherein the scanning and initialization includes a step of searching, by the transceiver, a directional multi-gigabit (DMG) beacon frame including information on a base service set (BSS) that is transmitted from the wireless data transmitting device at a beacon interval (BI) cycle period with a beacon interval (BI) that does not include a beacon header interval (BHI), and a step of joining the BSS, when the DMG beacon frame search is successful, and
wherein the connection setup includes a step of performing, by the transceiver, sector level sweep (SLS) based on the DMG beacon frame, a step of performing association with no authentication with the wireless data transmitting device, and a step of performing MIMO beamforming setup.