3GPP TS 23501-g51 中英文对照 | 4.2.10 Architecture Reference Model for ATSSS Support
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4.2.10 Architecture Reference Model for ATSSS Support
In order to support the ATSSS feature, the 5G System Architecture is extended as shown in Figure 4.2.10-1, Figure 4.2.10-2 and Figure 4.2.10-3. The additional functionality that is supported by the UE and the network functions shown in these figures is specified in clause 5.32 below. In summary:
为了支持ATSSS功能,对5G System Architecture进行了扩展,如图4.2.10-1、图4.2.10-2和图4.2.10-3所示。以下第5.32条规定了UE支持的附加功能和这些图中所示的网络功能。总之:
- 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.
-UE支持第5.32.6条中规定的一个或多个控制功能,例如MPTCP功能和/或ATSSS-LL功能。UE中的每个控制功能能够根据网络提供的ATSSS规则在3GPP接入和non-3GPP接入之间实现流量控制、切换和拆分。对于Ethernet类型的MA PDU Session,ATSSS-LL功能在UE中是必需的。
- The UPF may support MPTCP Proxy functionality, which communicates with the MPTCP functionality in the UE by using the MPTCP protocol (IETF RFC 8684 [81]).
-UPF可支持MPTCP Proxy功能,其通过使用MPTCP协议与UE中的MPTCP功能进行通信。
- 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.
-UPF可以支持ATSSS-LL功能,这类似于为UE定义的ATSSS-LL功能。在UE中的ATSSS-LL功能和UPF中的ATSSS-LL功能之间没有定义用户平面协议。以下三幅图中未显示UPF中的ATSSS-LL功能。
NOTE 1: 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.
-此外,UPF支持Performance Measurement Functionality(PMF),UE可使用该功能在3GPP接入的user-plane和/或non-3GPP接入的user-plane上获得接入性能测量。
- The AMF, SMF and PCF are extended with new functionality that is further discussed in clause 5.32.
-AMF、SMF和PCF扩展了新功能。
Figure 4.2.10-1: Non-roaming and Roaming with Local Breakout architecture for ATSSS support
NOTE 2: The interactions between the UE and PCF that may be required for ATSSS control are specified in TS 23.503 [45].
注2:TS 23.503[45]中规定了ATSSS控制可能需要的UE和PCF之间的交互。
NOTE 3: A UPF that supports the MPTCP Proxy functionality and the PMF can be connected via an N9 reference point, instead of the N3 reference point.
注3:支持MPTCP Proxy功能的UPF和PMF可以通过N9参考点而不是N3参考点连接。
Figure 4.2.10-2 shows the 5G System Architecture for ATSSS support in a roaming case with home-routed traffic and when the UE is registered to the same VPLMN over 3GPP and non-3GPP accesses. In this case, the MPTCP Proxy functionality and the PMF are located in the H-UPF.
图4.2.10-2显示了在漫游情况下,当UE通过3GPP和non-3GPP接入注册到同一VPLMN时,ATSSS支持的5G System Architecture。在这种情况下,MPTCP Proxy功能和PMF位于H-UPF中。
Figure 4.2.10-2: Roaming with Home-routed architecture for ATSSS support (UE registered to the same VPLMN)
Figure 4.2.10-3 shows the 5G System Architecture for ATSSS support in a roaming case with home-routed traffic and when the UE is registered to a VPLMN over 3GPP access and to HPLMN over non-3GPP access (i.e. the UE is registered to different PLMNs). In this case, the MPTCP Proxy functionality and the PMF are located in the H-UPF.
图4.2.10-3显示了当UE通过3GPP接入注册到VPLMN和通过非3GPP接入注册到HPLMN(即,UE注册到不同的PLMN)时,在漫游情况下支持ATSSS的5G系统架构。在这种情况下,MPTCP代理功能和PMF位于H-UPF中。
Figure 4.2.10-3: Roaming with Home-routed architecture for ATSSS support (UE registered to different PLMNs)
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