US 11,974,176 B2
Inter-radio access technology handoff procedure
Sreedeep C, Bangalore (IN); Rakesh Krishna Moorthy, Bangalore (IN); and Sarat Chandra Battini, Bangalore (IN)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Dec. 3, 2021, as Appl. No. 17/457,483.
Prior Publication US 2023/0180070 A1, Jun. 8, 2023
Int. Cl. H04W 36/00 (2009.01); H04L 65/1016 (2022.01); H04L 65/1069 (2022.01); H04W 36/30 (2009.01); H04W 84/12 (2009.01)
CPC H04W 36/0066 (2013.01) [H04L 65/1016 (2013.01); H04L 65/1069 (2013.01); H04W 36/30 (2013.01); H04W 84/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a user equipment (UE), comprising:
communicating data associated with a communication session over a first radio access technology (RAT) in accordance with a first set of performance parameters;
determining, during the communication session while camped on the first RAT, to transition from the first RAT to a second RAT;
performing, during the communication session based on the determination, an inter-RAT handover from the first RAT to the second RAT;
transmitting a re-INVITE over the second RAT in response to the inter-RAT handover;
receiving an indication of a second set of performance parameters in response to the re-INVITE; and
communicating data associated with the communication session over the second RAT in accordance with the second set of performance parameters.