US 12,278,786 B2
Systems and methods to signal a changing quantity of layers in a multi-subscriber identity module device
Akash Srivastava, Hyderabad (IN); Tanay Kabra, Hyderabad (IN); Priyangshu Ghosh, Hyderabad (IN); Karthikeyan Sabapathi, Hyderabad (IN); Pankaj Bansal, Hyderabad (IN); Manasa Yarramasu, Guntur (IN); and Mahender Reddy Akkapally, Hyderabad (IN)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jun. 7, 2022, as Appl. No. 17/805,766.
Prior Publication US 2023/0396397 A1, Dec. 7, 2023
Int. Cl. H04L 5/00 (2006.01); H04W 8/18 (2009.01); H04W 68/00 (2009.01); H04B 7/0413 (2017.01); H04W 88/06 (2009.01)
CPC H04L 5/0092 (2013.01) [H04L 5/0051 (2013.01); H04W 8/183 (2013.01); H04W 68/005 (2013.01); H04B 7/0413 (2013.01); H04W 88/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of wireless communication performed by a user equipment (UE), the method comprising:
operating in a mode in which a first subscription associated with a first subscriber identity module (SIM) and a second subscription associated with a second SIM share radio frequency (RF) resources of the UE;
transmitting a first sounding reference signal (SRS) from the UE, wherein the first SRS indicates a first quantity of layers available to the first subscription;
receiving a first uplink (UL) grant from a network for the first quantity of layers for the first subscription;
transmitting a second SRS, wherein the second SRS indicates a second quantity of layers available to the first subscription, the second quantity of layers being less than the first quantity of layers;
receiving a second UL grant from the network for the second quantity of layers;
tuning away a first transmit chain associated with a first one of the layers;
receiving paging messages by the second subscription during a duration of the tuning away; and
subsequent to the duration of the tuning away, transmitting a third SRS by the first subscription, wherein the third SRS indicates the first quantity of layers available to the first subscription.