Apparatus and method for controlling security mode in wireless communication system
US9955354B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2017 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Aug 25, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/30
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method for controlling a security mode by a user equipment (UE) in a wireless communication system, including performing a camp-on process and a cell update process with a network when an out-of-service (OOS) situation has occurred, receiving one of a signaling connection release (SCR) message and a first protocol data unit (PDU) which corresponds to the SCR message from the network, receiving a security mode command (SMC) message from the network if the SCR message is received, performing an integrity process on the SCR message using an old security configuration, and performing a rollback process to discard a new security configuration included in the SMC message if a result of the integrity process result an integrity check success, and updating a security configuration to the old security configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.