4 General

24.1393GPP3GPP system - fixed broadband access network interworkingRelease 17Stage 3TS

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 3GPP TS 23.139 [2]. 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 3GPP TS 24.302 [3] and 3GPP TS 24.303 [4].

4.2 Network Discovery and Selection

4.2.1 Access network discovery and selection procedures

When interworking with fixed broadband access, the access network discovery and selection procedures specified in 3GPP TS 24.302 [3] is applied.

4.2.2 EPC network selection

When interworking with fixed broadband access, the EPC network selection procedures specified in 3GPP TS 24.302 [3] is applied.

4.2.3 Access network reselection

When interworking with fixed broadband access, the access network reselection procedures specified in 3GPP TS 24.302 [3] 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 3GPP TS 24.302 [3] 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 3GPP TS 24.302 [3] 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 3GPP TS 24.302 [3] 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 3GPP TS 24.302 [3] is applied.