Method and apparatus for handover to a WLAN connection involving a trigger for mobility at Packet Data Gateway (PDG)

摘要

The invention concerns a method for handover of a WLAN connection or a cellular mobile network connection between a Home Agent (HA) and a mobile station (UE) to a WLAN connection between a Home Agent (HA) and the mobile station (UE), wherein an IPSec Tunnel (Fig. 3b: IPSec) between the mobile station (UE) and a Packet Data Gateway (PDG) is serially connected to a Mobile Internet Protocol tunnel (Fig. 3b: MIP) between the Packet Data Gateway (PDG) and the Home Agent (Fig. 3b: HA).