US 11,658,817 B2
Security key usage across handover that keeps the same wireless termination
Daniela Laselva, Klarup (DK); and Istvan Z. Kovacs, Aalborg (DK)
Filed by Nokia Technologies Oy, Espoo (FI)
Filed on May 19, 2020, as Appl. No. 16/877,684.
Application 16/877,684 is a continuation of application No. 15/491,014, filed on Apr. 19, 2017, granted, now 10,681,541.
Claims priority of provisional application 62/329,531, filed on Apr. 29, 2016.
Prior Publication US 2020/0280848 A1, Sep. 3, 2020
Int. Cl. H04L 9/08 (2006.01); H04L 9/14 (2006.01); H04W 12/04 (2021.01); H04W 84/12 (2009.01); H04W 12/06 (2021.01); H04W 12/40 (2021.01); H04W 12/041 (2021.01); H04W 12/0433 (2021.01); H04W 36/00 (2009.01); H04W 12/033 (2021.01); H04W 12/037 (2021.01); H04W 12/069 (2021.01)
CPC H04L 9/088 (2013.01) [H04L 9/0891 (2013.01); H04L 9/14 (2013.01); H04W 12/04 (2013.01); H04W 12/041 (2021.01); H04W 12/0433 (2021.01); H04W 12/06 (2013.01); H04W 12/40 (2021.01); H04W 36/0038 (2013.01); H04L 2209/80 (2013.01); H04W 12/033 (2021.01); H04W 12/037 (2021.01); H04W 12/069 (2021.01); H04W 36/0069 (2018.08); H04W 84/12 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method comprising:
sending to a user equipment a first indication to maintain using a first set of security keys generated from a parameter specific to a source access node after the user equipment hands over a cellular link to a target access node without changing a wireless termination with which the user equipment is connected via a non-cellular link,
wherein the first indication is implicit from an absence of signaling of at least one pre-defined parameter comprising an absence of a wireless termination counter parameter in a long term evolution wireless local area network aggregation configuration for the user equipment; and
using at least one key of the first set of security keys to maintain the non-cellular link with the user equipment after the user equipment hands over the cellular link to the target access node without changing the wireless termination,
wherein the first indication remains valid until a second indication is sent to the user equipment, after which the at least one key of the first set of security keys is no longer valid for maintaining the non-cellular link.