US 12,256,453 B2
Conditional handover in handover command
Icaro Leonardo da Silva, Solna (SE); and Cecilia Eklöf, Täby (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/632,617
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 14, 2020, PCT No. PCT/SE2020/050785
§ 371(c)(1), (2) Date Feb. 3, 2022,
PCT Pub. No. WO2021/029819, PCT Pub. Date Feb. 18, 2021.
Claims priority of provisional application 62/887,431, filed on Aug. 15, 2019.
Prior Publication US 2022/0322174 A1, Oct. 6, 2022
Int. Cl. H04W 76/19 (2018.01); H04W 36/00 (2009.01); H04W 36/08 (2009.01)
CPC H04W 76/19 (2018.02) [H04W 36/0055 (2013.01); H04W 36/00837 (2018.08); H04W 36/0064 (2023.05); H04W 36/00698 (2023.05); H04W 36/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method implemented in a wireless device (WD), configured to communicate with a source network node and a target network node, the method comprising:
receiving at least one radio resource control (RRC) reconfiguration message, the at least one RRC reconfiguration message including a conditional reconfiguration prepared by the target network node and an indication that the WD is to perform a mobility procedure from a source cell supported by the source network node to a target cell supported by the target network node;
attempting to access the target cell according to the indicated mobility procedure;
when the attempt to access the target cell succeeds, then performing a cell change according to the indicated mobility procedure; and
when an attempt to access the target cell fails, performing a cell change to a target candidate cell selected associated with the conditional reconfiguration from one of a first set of candidate cells associated with the source network node supporting the source cell.