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Content for  TS 29.161  Word version:  11.0.0

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1  Scopep. 6

The present document defines the requirements for Packet Domain interworking between a:
  1. PLMN with WLAN access and PDN;
  2. PLMN with WLAN access and PLMN.
The present document also defines, in clause 12, the usage of Radius at the Pp Reference Point between the Packet Data Gateway and the Presence Network Agent, see TS 23.141.

2  Referencesp. 6

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
TS 23.234: "3GPP system to Wireless Local Area Network (WLAN) interworking; System description".
TS 29.234: "3GPP system to Wireless Local Area Network (WLAN) interworking; Stage 3".
TS 24.234: "3GPP system to Wireless Local Area Network (WLAN) interworking; User Equipment (UE) to network protocols; Stage 3".
TS 29.061: "Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN)".
TR 21.905: "Vocabulary for 3GPP Specifications".
RFC 1034  (1987): "Domain names - concepts and facilities".
RFC 1035  (1987): "Domain names - implementation and specification".
RFC 2131  (1997): "Dynamic Host Configuration Protocol".
RFC 3315  (2003) "Dynamic Host Configuration Protocol for IPv6 (DHCPv6)".
RFC 2865  (2000): "Remote Authentication Dial In User Service (RADIUS)".
RFC 3162  (2001): "RADIUS and IPv6".
RFC 2866  (2000): "RADIUS Accounting".
RFC 2373  (1998): "IP Version 6 Addressing Architecture".
RFC 2461  (1998): "Neighbor Discovery for IP Version 6 (IPv6)".
RFC 2462  (1998): "IPv6 Stateless Address Autoconfiguration".
TS 33.234: "3G security; Wireless Local Area Network (WLAN) interworking security".
TS 24.229: "Internet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3".
TS 23.141: "Presence Service; Architecture and functional description".
RFC 4739,  (2006): "Multiple Authentication Exchanges in the Internet Key Exchange (IKEv2) Protocol".
RFC 3579,  September 2003: "RADIUS (Remote Authentication Dial In User Service) Support for Extensible Authentication Protocol (EAP)".
RFC 4005  (2005): "Diameter Network Access Server Application".
RFC 3588  "Diameter Base Protocol".

3  Definitions, abbreviations and symbolsp. 7

3.1  Definitionsp. 7

For the purposes of the present document, the terms and definitions given in TS 23.234 and the following apply:
3GPP - WLAN Interworking:
used generically to refer to interworking between the 3GPP system and the WLAN family of standards
interworking WLAN:
WLAN that interworks with a 3GPP system
Serving WLAN:
interworking WLAN that the user is connected to, i.e. either a visited or a home WLAN
Visited WLAN:
interworking WLAN that Interworks only with a visited PLMN
UE (equipped with UICC card including (U)SIM) utilized by a 3GPP subscriber to access the WLAN interworking
External AAA Server:
The External AAA Server is located in an external packet data network. The PDG interworks with the External AAA Server via the Wi reference point.

3.2  Abbreviationsp. 7

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply:
Access Point Name
Dynamic Host Configuration Protocol
Dynamic Host Configuration Protocol version 6
Domain Name System
Internet Engineering Task Force
Internet Protocol
Internet Protocol version 4
Internet Protocol version 6
Internet Service Provider
Interworked / interworking WLAN
Local Area Network
Maximum Transfer Unit
Packet Data Gateway
Packet Data Network
Point-to-Point Protocol
Packet Switched
Remote Authentication Dial In User Service
Transmission Control Protocol
Wireless Local Area Network

3.3  Symbolsp. 8

For the purposes of the present document, the following symbols apply:
Reference point between a Packet Data Gateway and an external IP Network
Reference point between a Packet Data Gateway and a Presence Network Agent

4  Network characteristicsp. 8

4.1  Key characteristics of PLMNp. 8

The PLMN is fully defined in the 3GPP technical specifications. The key characteristics of 3GPP - WLAN Interworking are found in TS 23.234.

4.2  Key characteristics of IP Networksp. 8

Refer to TS 29.061.

5  Interworking classificationsp. 8

Refer to TS 29.061.

6  Access reference configurationp. 8

Refer to scenario 3 in the clauses Interworking Architecture in TS 23.234.

7  Subscription checkingp. 8

Subscription is checked during the WLAN attach procedure and at the tunnel establishment as described in TS 23.234.

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