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Content for  TS 24.139  Word version:  16.0.0

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1  ScopeWord‑p. 6
The present document specifies the UE - EPC procedures for accessing 3GPP Evolved Packet Core (EPC) via a Fixed Broadband Access network.
The specification covers the Support of QoS, Tunnel management procedures including the support of NAT traversal, and non-seamless offloading impacts.
The present document is applicable to the UE and the network. In this technical specification the network is the 3GPP EPC.

2  References

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.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 23.139: "3GPP System-Fixed Broadband Access Network Interworking".
[3]
TS 24.302: "Access to the Evolved Packet Core (EPC) via non-3GPP access networks; Stage 3".
[4]
TS 24.303: "Mobility management based on Dual-Stack Mobile IPv6; Stage 3".
[5]
RFC 2474  (December 1998): "Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers".
[6]
RFC 4187  (January 2006): "Extensible Authentication Protocol Method for 3rd Generation Authentication and Key Agreement (EAP-AKA)".
[7]
RFC 5996  (September 2010): "Internet Key Exchange Protocol Version 2 (IKEv2)".
[8]
RFC 4555  (June 2006): "IKEv2 Mobility and Multihoming Protocol (MOBIKE)".
[9]
RFC 3948  (January 2005): "UDP Encapsulation of IPsec ESP Packets".
[10]
RFC 4301  (December 2005): "Security Architecture for the Internet Protocol".
[11]
Broadband Forum TR-058: "Multi-service Architecture and Framework Requirements", September 2003.
[12]
Broadband Forum TR-059: "Architecture Requirements for the Support of QoS-Enabled IP Service", September 2003.
[13]
Broadband Forum TR-101: "Migration to Ethernet-based DSL Aggregation", Issue 2, July 2011.
[14]
Broadband Forum TR-134: "Policy Control Framework", Issue 1, July 2012.
[15]
Broadband Forum TR-145: "Multi-service Broadband Network Functional Modules and Architecture", Issue 1, November 2012.
[16]
Broadband Forum TR-203: "Interworking between Next Generation Fixed and 3GPP Wireless Access", Issue 1, August 2012.
[17]
Broadband Forum TR-146: "Subscriber Sessions", Issue 1, May 2013.
[18]
TS 23.402: "Architecture enhancements for non-3GPP accesses".
[19]
TS 23.003: "Numbering, addressing and identification".
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3  Definitions and abbreviationsWord‑p. 7

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
Fixed Broadband Access network:
Fixed broadband access network is a type of high-speed Internet access for multi-service broadband packet networking. The fixed broadband access system is specified by the Broadband Forum in BBF TR-058 [11], BBF TR-059 [12], BBF TR-101 [13], BBF TR-134 [14], BBF TR-145 [15], BBF TR-146 [17], and BBF TR-203 [16].
UE reflective QoS function:
A UE function that supports reflective QoS for uplink traffic over a fixed broadband access network as specified in TS 23.139.
Non-seamless WLAN offload (NSWO):
NSWO is a capability of a UE supporting routing specific IP flows over the WLAN access without traversing the EPC as defined in TS 23.139.
 For the purposes of the present document, the following terms and definitions given in TS 24.303 subclause 3.1 apply:
Home Agent (HA)
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3.2  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
DSCP
Differentiated Services Code Point
NAT
Network Address Translation
P GW
PDN Gateway
QoS
Quality of Service
RQSI
Reflective QoS Indication
EPC
Evolved Packet Core

4  General

4.1  Support of Fixed Broadband Access Network Interworking

The support of fixed broadband access network is based on the network configuration as specified in TS 23.139. The fixed broadband access network interworking related functions are triggered by the network if the network knows the UE local access network is a fixed broadband access network. For instance, the network can be statically configured with a mapping between the UE local IP address and the local access network type.
For access to 3GPP Evolved Packet Core (EPC) via a fixed broadband access network or non-seamless WLAN offload at a fixed broadband access network or both, the EPC network procedures and the UE procedures are specified in this document. In all other cases, the EPC network procedure and the UE procedures are specified in TS 24.302 and TS 24.303.
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4.2  Network Discovery and SelectionWord‑p. 8

4.2.1  Access network discovery and selection procedures

When interworking with fixed broadband access, the access network discovery and selection procedures specified in TS 24.302 is applied.

4.2.2  EPC network selection

When interworking with fixed broadband access, the EPC network selection procedures specified in TS 24.302 is applied.

4.2.3  Access network reselection

When interworking with fixed broadband access, the access network reselection procedures specified in TS 24.302 is applied.

4.2.4  Data traffic routing of IP flows

When interworking with fixed broadband access, the data routing of IP flows procedures specified in TS 24.302 is applied.

4.3  UE - EPC Network Protocols

4.3.1  Trusted and Untrusted Accesses

When interworking with Fixed Access Broadband, the UE-EPC Network protocols related to trusted and untrusted access procedures specified in TS 24.302 is applied.

4.3.2  IP Mobility Mode Selection

When interworking with Fixed Access Broadband, the UE-EPC Network protocols related to IP Mobility Mode Selection procedures specified in TS 24.302 is applied.

4.3.3  Authentication and Authorization

When interworking with Fixed Access Broadband, the UE-EPC Network protocols related to Authentication and Authorization procedures specified in TS 24.302 is applied.

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