US 11,943,674 B2
Conditional handover of master node in the presence of secondary node
Ahmad Awada, Munich (DE); Krzysztof Kordybach, Pulawy (PL); Jedrzej Stanczak, Wroclaw (PL); Elena Virtej, Espoo (FI); Tero Henttonen, Espoo (FI); and Ingo Viering, Munich (DE)
Assigned to Nokia Technologies Oy, Espoo (FI)
Filed by Nokia Technologies Oy, Espoo (FI)
Filed on Feb. 10, 2021, as Appl. No. 17/173,143.
Claims priority of provisional application 62/976,251, filed on Feb. 13, 2020.
Prior Publication US 2021/0258843 A1, Aug. 19, 2021
Int. Cl. H04W 36/00 (2009.01); H04W 48/08 (2009.01)
CPC H04W 36/00837 (2018.08) [H04W 36/0069 (2018.08); H04W 48/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor; and
at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least:
initiate by a master node, which is a configured with a secondary node as part of dual connectivity, a conditional handover to a target master node including a secondary node change, the initiating causing the target master node to send a secondary node addition request message, the secondary node addition request message indicating that addition of the secondary node is associated with the conditional handover of the master node.