US 11,057,766 B2
Security management in disaggregated base station in communication system
Suresh P. Nair, Whippany, NJ (US); Tsunehiko Chiba, Saitama (JP); and Philippe Godin, Versailles (FR)
Assigned to Nokia Technologies Oy, Espoo (FI)
Filed by Nokia Technologies Oy, Espoo (FI)
Filed on Nov. 1, 2018, as Appl. No. 16/178,266.
Prior Publication US 2020/0145819 A1, May 7, 2020
Int. Cl. H04W 12/04 (2021.01); H04W 12/10 (2021.01); H04W 92/10 (2009.01); H04W 12/041 (2021.01); H04W 12/60 (2021.01)
CPC H04W 12/04 (2013.01) [H04W 12/10 (2013.01); H04W 92/10 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor;
at least one memory including computer program code;
the at least one memory and the computer program code being configured to, with the at least one processor, cause user equipment in a communication system at least to:
receive a reconfiguration message from a disaggregated base station with which the user equipment has a current security context established, wherein the reconfiguration message comprises an instruction to compute a new security context for one of a plurality of security domains supported by the disaggregated base station based on a security domain counter value, wherein the security domain counter value is associated with said one of the plurality of security domains supported by the disaggregated base station;
compute the new security context for said one of the plurality of security domains based on the security domain counter value and a current default security context value for the disaggregated base station; and
derive a set of security keys for said one of the plurality of security domains from the new security context.