US 11,985,563 B2
Enhancement for multiple secondary cell group failures
Nihar Garg, Jersey City, NJ (US); Ehsan Ahmed Quadri Syed, Jersey City, NJ (US); Karthik Anantharaman, Cupertino, CA (US); Mohamed L. Haidara, Jersey City, NJ (US); Shashikant Tiwari, Jersey City, NJ (US); Sree Ram Kodali, Sunnyvale, CA (US); Sridhar Prakasam, Fremont, CA (US); and Vijay Venkataraman, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 23, 2022, as Appl. No. 17/951,542.
Application 17/951,542 is a continuation of application No. 16/952,435, filed on Nov. 19, 2020, granted, now 11,490,312.
Prior Publication US 2023/0013274 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/30 (2009.01); H04W 36/00 (2009.01)
CPC H04W 36/30 (2013.01) [H04W 36/0079 (2018.08)] 18 Claims
OG exemplary drawing
 
1. A user equipment device (UE), comprising:
a radio; and
one or more processors, operably coupled to the radio and configured to cause the UE, to:
establish communication with a first cell of first base station, wherein the first cell is in a master cell group (MCG);
receive first signaling from the first base station configuring the UE to perform signal quality measurements of a second cell of a second base station, wherein the first signaling includes a first threshold;
perform first signal quality measurements of the second cell;
compare the first signal quality measurement to the first threshold;
based on the first signal quality measurement exceeding the first threshold and without further instruction, autonomously attempt to add a connection to the second base station via the second cell as a part of a second cell group (SCG) for dual connectivity (DC);
in response to failing to add the connection to the second base station, modify the first threshold;
perform a second signal quality measurement of the second base station;
compare the second signal quality measurement to the modified first threshold;
based on the second signal quality measurement exceeding the modified first threshold, autonomously attempt to connect to the second base station; and
in response failing to connect to the second base station, disable connections to the second base station.