US 12,089,067 B2
PDCCH link control based on timing advance and user service beam mode in massive MIMO systems
Sanghoon Sung, Ashburn, VA (US)
Assigned to T-MOBILE INNOVATIONS LLC, Overland Park, KS (US)
Filed by T-MOBILE INNOVATIONS LLC, Overland Park, KS (US)
Filed on Oct. 6, 2022, as Appl. No. 17/961,293.
Prior Publication US 2024/0121624 A1, Apr. 11, 2024
Int. Cl. H04W 16/28 (2009.01); H04B 7/0413 (2017.01); H04W 84/04 (2009.01)
CPC H04W 16/28 (2013.01) [H04B 7/0413 (2013.01); H04W 84/042 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling a downlink channel based on a time advance and a beam mode at a cell site, the method comprising:
replacing, by a link management system communicatively coupled to one or more user devices, a response identifier with a cell identifier responsive to a move from an idle mode to an active mode;
storing a time advance and the cell identifier based on a time advance group that corresponds to the one or more user devices;
adapting a quality indication offset based on the time advance group;
determining a downlink channel indication based on the quality indication offset and the time advance group; and
activating a beam mode for communication with the one or more user devices of the time advance group based on the downlink channel indication.