Patent ID: 8780922

Claim:
A method for transmitting Ethernet-transmission-protocol-based data packets, comprising: providing one or more Generic Route Encapsulation (GRE) keys for establishing a generic route encapsulation tunnel connection between a home agent unit and a foreign agent unit; providing an Ethernet extension in the Ethernet-transmission-protocol-based data packets and inserting a media access control (MAC) address assigned to a mobile communication unit into the Ethernet extension of the Ethernet-transmission-protocol-based data packets; assigning, by the foreign agent, at least one of the one or more GRE keys and linking the assigned at least one GRE key with the mobile communication unit; reading out, by the home agent, the MAC address contained in the Ethernet extension, linking the read out MAC address of the mobile communication unit with a care-of address of the mobile communication unit, generating at least one other GRE key of the one or more GRE keys, and sending the generated at least one other GRE key to the foreign agent; and transmitting the Ethernet-transmission-protocol-based data packets with generic route tunneling between the mobile communication unit and a communication system.