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full Table of Contents for  TS 23.501  Word version:   16.3.0

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1…   3…   4…   4.2.4   4.2.5…   4.2.8            4.2.9…   4.3…   4.3.3   4.3.4   4.3.5   4.4…   4.4.6…   4.4.8   5…   5.4…   5.6…   5.7…   5.8…   5.10…   5.16…   5.17   5.18…   5.27…   5.31   5.32   5.33   5.34   5.35…   6…   6.3…   7…   7.2…   8…   8.2.4   8.2.5…   8.3…   A…   D…   E…   F   G…   G.3   G.4…

 

4.2.9  Network Analytics architecture
The Network Analytics architecture is defined in TS 23.288.
4.2.10  Architecture Reference Model for ATSSS Support [R16]Word-p. 52
The UE supports one or more of the steering functionalities specified in clause 5.32.6, e.g. MPTCP functionality and/or ATSSS-LL functionality. Each steering functionality in the UE enables traffic steering, switching and splitting across 3GPP access and non-3GPP access, in accordance with the ATSSS rules provided by the network. The ATSSS-LL functionality is mandatory in the UE for MA PDU Session of type Ethernet.
The UPF may support MPTCP Proxy functionality, which communicates with the MPTCP functionality in the UE by using the MPTCP protocol [81].
The UPF may support ATSSS-LL functionality, which is similar to the ATSSS-LL functionality defined for the UE. There is no user plane protocol defined between the ATSSS-LL functionality in the UE and the ATSSS-LL functionality in the UPF. The ATSSS-LL functionality in the UPF is not shown in the following three figures.
Note: ATSSS-LL functionality is needed in the 5GC for MA PDU Session of type Ethernet.
In addition, the UPF supports Performance Measurement Functionality (PMF), which may be used by the UE to obtain access performance measurements (see clause 5.32.5) over the user-plane of 3GPP access and/or over the user-plane of non-3GPP access.
The AMF, SMF and PCF are extended with new functionality that is further discussed in clause 5.32.
Reproduction of 3GPP TS 23.501, Figure 4.2.10-1: Non-roaming and Roaming with Local Breakout architecture for ATSSS support
Figure 4.2.10-1: Non-roaming and Roaming with Local Breakout architecture for ATSSS support
Reproduction of 3GPP TS 23.501, Figure 4.2.10-2: Roaming with Home-routed architecture for ATSSS support (UE registered to the same VPLMN)
Figure 4.2.10-2: Roaming with Home-routed architecture for ATSSS support (UE registered to the same VPLMN)
Reproduction of 3GPP TS 23.501, Figure 4.2.10-3: Roaming with Home-routed architecture for ATSSS support (UE registered to different PLMNs)
Figure 4.2.10-3: Roaming with Home-routed architecture for ATSSS support (UE registered to different PLMNs)

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