公开(公告)号：US20190208411A1

公开(公告)日：2019-07-04

申请号：US16294653

申请日：2019-03-06

Applicant: Intel Corporation

Inventor： Bharat Shrestha ,  Seau S. Lim ,  Yi Guo

IPC: H04W12/00 ,  H04W12/04 ,  H04L9/08

CPC classification number: H04W12/001 ,  H04L9/0861 ,  H04L2209/80 ,  H04W12/0401 ,  H04W84/042

Abstract: Systems and methods of a security framework for an RRC connection are described. The UE receives a release message that comprises a current Next Hop Chaining Counter (NCC). The UE derives a new KeNB* using the current NCC and transmits an EDT RA preamble to same or a different base station. After receiving an RAR with an uplink allocation, the UE transmits a RRCConnectionResumeRequest message. The UE transmits uplink data encrypted using KeNB* if the uplink allocation includes a data allocation sufficient for the data, fall backs to a legacy RRC connection procedure in which the stored KeNB* is discarded and then KeNB* is re-derived if the data allocation is insufficient for the data due to a CE level change, and fall backs to a legacy RRC connection procedure in which the stored KeNB* is used instead of discarding KeNB* if the uplink allocation excludes the data allocation.