CA2796511A1

5G

Title

APPARATUS AND METHOD FOR TRANSITIONING FROM A SERVING NETWORK NODE THAT SUPPORTS AN ENHANCED SECURITY CONTEXT TO A LEGACY SERVING NETWORK NODE

Application Number:

CA20112796511

Publication Date:

20-10-2011

Current Assignee:

Family ID:

Application Date:

15-04-2011

Declaring Company:

Publication Country:

US

Priority Date:

16-04-2010

Title

APPARATUS AND METHOD FOR TRANSITIONING FROM A SERVING NETWORK NODE THAT SUPPORTS AN ENHANCED SECURITY CONTEXT TO A LEGACY SERVING NETWORK NODE

Application Number:

CA20112796511

Family ID:

Publication Country:

US

Publication Date:

20-10-2011

Application Date:

15-04-2011

Priority Date:

16-04-2010

Current Assignee:

Declaring Company:

Abstract  Abstract

Disclosed is a method for transitioning a remote station from a current serving network node having an enhanced security context to a new serving network node. In the method the remote station provides at least one legacy key and generates at least one session key based on an information element associated with the enhanced security context. The remote station forwards a first message having the information element to the new serving network node. The remote station receives a second message from the new serving network node having a response based on either the legacy key or the session key. The remote station determines that the new serving network node does not support the enhanced security context if the response of the second message is based on the legacy key. Accordingly the remote station protects communications based on the legacy key upon determining that the enhanced security context is not supported.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.