Method for transmitting data in a WLAN network using an EAP message comprising SIP authentication data

1. A method for transmitting data in a Wireless Local Area Network (WLAN), comprising:

transmitting a WLAN message between a terminal device and an access node of the WLAN network in a Layer 2 protocol layer, the WLAN message comprising information concerning a data connection of the terminal device via the access node to at least one network connectable to the WLAN network;

wherein an Extensible Authentication Protocol (EAP) message is transmitted in the WLAN message, the EAP message comprising a Session Initiation Protocol (SIP) message having SIP authentication data, the SIP message of the EAP Message also comprising a Session Description Protocol (SDP) message,

wherein the SIP authentication data at least partially defines an authentication mechanism, and

transmitting a message from the access node to a network connected to the access node; evaluating data connection information provided in the SIP message with the network connected to the access node;

determining whether data connection is possible with the network connected to the access node;

determining available data connections that meet criteria provided within the SIP message with the network connected to the access node; and

sending a message with the network connected to the access node that is configured to provide the terminal device with a message identifying data connection options that meet the criteria provided within the SIP message.

2. The method as claimed in claim 1 , wherein the SIP authentication data is generated using an authentication mechanism from Kerberos, Digest, AKA, or USIM.

3. The method as claimed in claim 2 , wherein the SIP message excludes an IP address.

4. The method as claimed in claim 1 , wherein the SIP authentication data is evaluated in a SIP Proxy Call State Control Function server.

5. The method as claimed in claim 1 wherein the data connection information is at least partially stored in the Session Description Protocol (SDP) message.

6. The method as claimed in claim 1 wherein the data connection information includes data pertaining to the connection, the data selected from the group consisting of inquiry, data connection type, quality of the data connection, data connection cost, service provided by the data connection and combinations thereof.

7. The method as claimed in claim 1 wherein evaluation of the data connection information by the network connected to the access node occurs in a Call State Control Function server.

8. The method as claimed in claim 1 , wherein the WLAN message conforms with the WLAN standard IEEE 802.11.

9. The method as claimed in claim 1 , further comprising transmitting a message between the access node and an IP network or a 3GPP network connectable to the access node or the WLAN network such that the IP network or 3 GPP network receives the SIP authentication data and evaluates the SIP authentication data.

10. The method as claimed in claim 1 wherein authentication for the WLAN is solely processed via SIP protocol.

11. A method for transmitting data in a Wireless Local Area Network (WLAN), comprising:

transmitting a WLAN message between a terminal device and an access node of the WLAN network in a Layer 2 protocol layer, the WLAN message comprising information concerning a data connection of the terminal device via the access node to at least one network connectable to the WLAN network;

wherein an Extensible Authentication Protocol (EAP) message is transmitted in the WLAN message, the EAP message comprising a Session Initiation Protocol (SIP) message with SIP authentication data, the SIP message of the EAP Message also comprising at least one Session Description Protocol (SDP) message, and

wherein the SIP message is transported in the EAP message, the EAP message being at least one EAP message selected from the group consisting of EAP-Response/Identity, EAP-Request, EAP-Response and EAP-Success;

transmitting a message from the access node to a network connected to the access node; evaluating data connection information provided in the SIP message with the network connected to the access node;

determining whether data connection is possible with the network connected to the access node;

determining available data connections that meet criteria provided within the SIP message with the network connected to the access node; and

sending a message with the network connected to the access node that is configured to provide the terminal device with a message identifying data connection options that meet the criteria provided within the SIP message.

12. The method as claimed in claim 11 , wherein the SIP authentication data is evaluated in a SIP Proxy Call State Control Function server.

13. The method as claimed in claim 11 , wherein the data connection information is at least partially stored in the Session Description Protocol (SDP) message.

14. The method as claimed in claim 11 , wherein the EAP message is comprised of EAP authentication data and the SIP authentication data is the EAP authentication data.

15. The method as claimed in claim 11 , wherein authentication for the WLAN is solely processed via SIP protocol.

16. The method as claimed in claim 11 , wherein authentication in an IP network occurs without the use of a RADIUS protocol.

17. The method as claimed in claim 11 , wherein the SIP message is generated prior to an IP Address being assigned to the terminal device.

18. A method for transmitting data in a Wireless Local Area Network (WLAN), comprising:

including an Extensible Authentication Protocol (EAP) message within a WLAN message, the EAP message comprising a Session Initiation Protocol (SIP) message with SIP authentication data, the SIP message of the EAP Message also comprising at least one Session Description Protocol (SDP) message; and

transmitting a WLAN message between a terminal device and an access node of the WLAN network in a Layer 2 protocol layer, the WLAN message comprising information concerning a data connection of the terminal device via the access node to at least one network connectable to the WLAN network,

wherein the SIP message is transported in the EAP message such that at least one SIP Proxy Call State Control Function server connected to the access node processes the SIP authentication data;

transmitting a message from the access node to a network connected to the access node; evaluating data connection information provided in the SIP message with the network connected to the access node;

determining whether data connection is possible with the network connected to the access node;

determining available data connections that meet criteria provided within the SIP message with the network connected to the access node; and sending a message with the network connected to the access node that is configured to provide the terminal device with a message identifying data connection options that meet the criteria provided within the SIP message.

19. The method of claim 18 wherein only SIP protocol is used for authentication in the WLAN.

20. The method of claim 19 wherein only SIP protocol is used for authentication in at least one network connected to the WLAN.

21. The method of claim 18 wherein the SIP message is generated within an IP address being assigned.

22. The method of claim 18 wherein the SIP message is comprised of the at least one Session Description Protocol (SDP) message such that data connection establishment between the terminal device and at least one of the access node and a network connected to the access node are evaluated during authentication of the terminal device.

23. The method of claim 22 further comprising evaluating the data connection establishment possibilities for the terminal device and sending at least one WLAN message identifying data connection establishment options at least one of the access node and network connected to the access node are configured to provide.

24. The method of claim 22 wherein the at least one SDP message is a SDP message comprised of data selected from the group consisting of inquiry, data connection type, quality of the data connection, data connection cost, service provided by the data connection and combinations thereof.