US 12,150,003 B2
Release of conditional primary secondary cell addition/modification configurations
Atsushi Ishii, Vancouver, WA (US)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/765,180
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Sep. 30, 2020, PCT No. PCT/JP2020/037217
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/066033, PCT Pub. Date Apr. 8, 2021.
Claims priority of provisional application 62/910,267, filed on Oct. 3, 2019.
Prior Publication US 2022/0394584 A1, Dec. 8, 2022
Int. Cl. H04W 36/30 (2009.01); H04W 12/041 (2021.01); H04W 36/00 (2009.01); H04W 76/19 (2018.01)
CPC H04W 36/305 (2018.08) [H04W 12/041 (2021.01); H04W 36/0038 (2013.01); H04W 76/19 (2018.02)] 11 Claims
OG exemplary drawing
 
6. A method for a wireless terminal comprising:
establishing, using a first Access Stratum (AS) master key, a first security context on a first radio connection with a master access node;
receiving a re-configuration message comprising one or more conditional primary cell of secondary cell group (PSCell) configurations and at least one counter, each conditional PSCell configuration comprising an identity of a candidate PSCell and at least one triggering condition, the at least one counter and the first AS master key being used for derivation of a second AS master key to be used for an establishment of a second security context with one of a candidate PSCell comprised in one of the one or more conditional PSCell configurations; and
storing the one or more conditional PSCell configurations, wherein
the stored one or more conditional PSCell configurations are released upon a change of the first AS master key.