Patent ID: 8396971
Filing Date: 2013-03-12
Classification: H04L,H04W

Abstract:
1. A method for connecting a mobile node to the Internet, comprising: connecting the mobile node to a virtual private network at a point of attachment; maintaining at least one active Next Steps In Signaling session between the mobile node and the virtual private network, the NSIS session being maintained using an NSIS message having a message routing information (MRI) object; connecting to a gateway of the virtual private network via a Mobile Internet Key Exchange protocol (MOBIKE) connection; defining a value for a security parameter index (SPI); inserting the value for the security parameter index into the MRI object contained in the NSIS message; setting an S flag in the MRI object; defining a restricted address space that refers to an IP address of the mobile node and a prefix for the IP address of the mobile node, the prefix relating to a permissible range of IP addresses for the mobile node; inserting the address space into the MRI object; changing the point of attachment for the mobile node to connect to the Internet; changing the IP address of the mobile node to an updated IP address within the permissible range of IP addresses for the mobile node, without updating states of NSIS nodes along the connection; and using the address space and the value for the security parameter index to identify traffic associated with the mobile node.