US 12,127,002 B2
Integrity protection of uplink data
Bharat Shrestha, Cupertino, CA (US); Jaemin Han, Cupertino, CA (US); and Abhijeet Kolekar, Cupertino, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/439,308
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Mar. 24, 2020, PCT No. PCT/US2020/024482
§ 371(c)(1), (2) Date Sep. 14, 2021,
PCT Pub. No. WO2020/198234, PCT Pub. Date Oct. 1, 2020.
Claims priority of provisional application 62/824,126, filed on Mar. 26, 2019.
Prior Publication US 2022/0159465 A1, May 19, 2022
Int. Cl. H04W 12/106 (2021.01); H04W 12/041 (2021.01); H04W 12/0431 (2021.01); H04W 36/08 (2009.01)
CPC H04W 12/106 (2021.01) [H04W 12/041 (2021.01); H04W 12/0431 (2021.01); H04W 36/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for uplink data integrity protection verification, the method comprising:
receiving, by a target node and from a user equipment (UE), a radio resource control (RRC) message comprising a message authentication code-integrity (MAC-I);
receiving, by the target node and from a source node of a radio access network (RAN), an original KeNB;
deriving, by the target node, a new key KeNB* based on the original KeNB;
calculating, by the target node, a hash code based on the RRC message and the new key KeNB*; and
verifying, by the target node, integrity protection of the RRC message based on the hash code and the received MAC-I.