US 12,137,409 B2
Registration procedure for ensuring service based on a selection of the best available network slice of the same slice type
Ravi Shekhar, Pune (IN); Aditya Prakash, Bangalore (IN); Amit Shivhare, Gurgaon (IN); and Vimal Srivastava, Bangalore (IN)
Assigned to CISCO TECHNOLOGY, INC., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Oct. 25, 2021, as Appl. No. 17/509,802.
Prior Publication US 2023/0132096 A1, Apr. 27, 2023
Int. Cl. H04W 48/18 (2009.01); H04W 8/18 (2009.01); H04W 60/00 (2009.01); H04W 72/54 (2023.01); H04W 72/563 (2023.01); H04W 76/10 (2018.01)
CPC H04W 48/18 (2013.01) [H04W 8/18 (2013.01); H04W 60/00 (2013.01); H04W 72/54 (2023.01); H04W 72/563 (2023.01); H04W 76/10 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
at a control plane function for mobility management,
receiving, from a user equipment (UE), a message which indicates a registration request for registration to a network slice of a mobile network;
obtaining subscription information associated with the UE, the subscription information including a subscribed slice ID having a slice type value indicating a slice type and having a subscription attribute indicating whether a requirement or preference for registration to a network slice having a best available or alternative level of service for the slice type indicated by the slice type value is enabled or disabled for the UE;
selecting, as an allowed slice ID, a first slice ID of a first network slice in which to register the UE based on availability of the first network slice, the first slice ID having the slice type value indicating the slice type and having a first slice differentiator value associated with a first level of service;
based on unavailability of the slice type having the first slice differentiator value associated with the first level of service and based on the subscription attribute indicating the requirement or preference for registration to a network slice having a best available or alternative level of service for the slice type indicated by the slice type value is enabled, alternatively selecting, as the allowed slice ID, a second slice ID of a second network slice in which to register the UE, the second slice ID having the slice type value indicating the slice type and having a second slice differentiator value associated with a second level of service; and
sending, to the UE, a message which indicates a registration accept including the allowed slice ID.