US 12,483,908 B2
Improving service continuity
Philippe Godin, Nozay (FR); Tsunehiko Chiba, Tokyo (JP); and Laurent Thiebaut, Nozay (FR)
Assigned to NOKIA TECHNOLOGIES OY, Espoo (FI)
Appl. No. 17/906,545
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed Mar. 19, 2020, PCT No. PCT/EP2020/057580
§ 371(c)(1), (2) Date Sep. 16, 2022,
PCT Pub. No. WO2021/185446, PCT Pub. Date Sep. 23, 2021.
Prior Publication US 2023/0142879 A1, May 11, 2023
Int. Cl. H04W 24/02 (2009.01); H04W 36/00 (2009.01); H04W 60/04 (2009.01); H04W 76/30 (2018.01)
CPC H04W 24/02 (2013.01) [H04W 36/0022 (2013.01); H04W 36/13 (2023.05); H04W 60/04 (2013.01); H04W 76/30 (2018.02)] 17 Claims
OG exemplary drawing
 
1. An apparatus in a communication network, 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 at least to perform:
store information on slice remapping describing how a given network slice may be mapped to another network slice;
receive a first message from an access node, that the node serves a terminal or has received a request to serve a terminal utilising a network slice not supported by the node; and
transmit based on the first message a message to a network entity responsible for session management to control the connection of the terminal, with the information on slice remapping or activity status of the packet data unit sessions associated with the slice not supported by the node;
wherein the information on slice remapping comprises a indication that a slice X of a source radio access node is mapped to a slice Y of a target radio access node;
wherein the information on slice remapping provides a degrade mode of the slice X, and
wherein the slice Y of the target radio access node is a general-purpose slice.