Patent ID: 11895549
Assignee: NOKIA TECHNOLOGIES OY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. An apparatus, comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform:
receiving, at the apparatus and from a source cell in a wireless network, a list of one or more service/slice specific indications for individual ones of one or more network slices in a handover required message for a first handover method of the apparatus from the source cell to a target cell in the wireless network, the receiving performed in a handover preparation phase prior to handover of the apparatus, the first handover method to maintain connection with the apparatus to both the source cell and target cell during at least part of the handovers that use the first handover method;
sending by the apparatus the list of one or more service/slice specific indications to the target cell in a handover request message;
receiving, by the apparatus and from the target cell, indications in a handover request acknowledgement of one or more selected network slices to be handed over for the apparatus from the source cell to the target cell using the first handover method, wherein there are one or more other network slices to be handed over for the apparatus from the source cell to the target cell using a second handover method wherein the apparatus does not maintain two simultaneous connections to the source cell and target cell during the second handover method;
sending by the apparatus to the source cell the indications of the one or more selected network slices in a handover command message.