US 12,238,595 B2
Ultra reliable reporting of SCG measurements while SpCell degrades
Kulwinder Saini, Bavaria-Bayern (DE); and Vijayant Kumar, Munich (DE)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by APPLE INC., Cupertino, CA (US)
Filed on Jun. 5, 2024, as Appl. No. 18/734,495.
Application 18/734,495 is a continuation of application No. 17/224,377, filed on Apr. 7, 2021, granted, now 12,047,821.
Prior Publication US 2024/0406814 A1, Dec. 5, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 36/00 (2009.01)
CPC H04W 36/0069 (2018.08) [H04W 36/0022 (2013.01); H04W 36/00222 (2023.05); H04W 36/0058 (2018.08); H04W 36/00837 (2018.08); H04W 36/0085 (2018.08); H04W 36/00698 (2023.05)] 20 Claims
OG exemplary drawing
 
1. A method of a user equipment (UE) operating in a multi-radio dual connectivity (MR-DC) mode with a master node (MN) and a secondary node (SN), comprising:
identifying, prior to a radio link failure (RLF) of a special cell (SpCell) of a secondary cell group (SCG) of the SN, that a handover condition corresponding to a degradation of the SpCell of the SCG of the SN has been detected at the UE; and
in response to identifying that the handover condition corresponding to the degradation of the SpCell has been detected at the UE:
sending an SCG measurement report to the SN on a first signaling radio bearer (SRB); and
repeating a transmission of the SCG measurement report to the MN on a second SRB before an instruction to perform a handover to a new SN is received at the UE; and
performing the handover from the SN to the new SN in response to receiving the instruction.