US 12,425,938 B2
Techniques for layer 2 signaling for layer 1 and layer 2 mobility
Mohamed Atef Abdelazim Shehata, Lannion (FR); Jelena Damnjanovic, Del Mar, CA (US); and Tao Luo, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jul. 12, 2022, as Appl. No. 17/863,044.
Prior Publication US 2024/0022982 A1, Jan. 18, 2024
Int. Cl. H04W 36/04 (2009.01); H04W 36/00 (2009.01); H04W 36/08 (2009.01)
CPC H04W 36/04 (2013.01) [H04W 36/0058 (2018.08); H04W 36/08 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a user equipment (UE), comprising:
one or more processors;
one or more memories coupled with the one or more processors; and
instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to:
receive, from a first serving cell and via Layer 3 control signaling, first signaling indicative of a plurality of sets of parameters for primary serving cell and secondary serving cell operation;
receive, from the first serving cell and via Layer 2 control signaling, second signaling indicating an activation of a second serving cell at the UE, the second signaling comprising a bit field that indicates a message format of the second signaling, wherein a first value of the bit field indicates a first message format used to activate and deactivate both primary serving cells and secondary serving cells, and wherein a second value of the bit field indicates a second message format used to activate and deactivate only secondary serving cells;
receive, via the second signaling, an indication that specifies that the second serving cell is to be activated as a primary serving cell based at least in part on the second signaling comprising the first value of the bit field that indicates the first message format; and
communicate with the second serving cell as the primary serving cell based at least in part on receiving the second signaling and in accordance with a set of parameters from the plurality of sets of parameters indicated by the first signaling.