3GPP TS 23502-h20 中英文对照 | 4.13.8 Support of 5G LAN-type service

Posted 2021-12-30 COCOgsta

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4.13.8 Support of 5G LAN-type service

4.13.8.1 Support of 5G VN group management

The information of 5G VN group is provided by the AF to the NEF and is stored in the UDR, by using the NEF service operations information flow procedure described in clause 4.15.6.2.

5G VN组的信息由AF提供给NEF，并通过使用第4.15.6.2条所述的NEF服务操作信息流程序存储在UDR中。

4.13.8.2 Support of 5G VN group communication

4.13.8.2.1 General

This clause specifies the procedures for 5G VN group communication.

本条款规定了5G VN组通信的程序。

4.13.8.2.2 group-level N4 session management procedures

The SMF shall create an group-level N4 session on the UPF for a 5G VN group when N19-based forwarding is applied. The group-level N4 Session management procedures enable the SMF to create, update or delete the group-level N4 Session, e.g. add or delete N4 rules, allocate or release the N19 tunnel resources.

当应用基于N19的转发时，SMF应在UPF上为5G VN组创建组级N4会话。组级N4 Session管理程序使SMF能够创建、更新或删除组级N4 Session，例如添加或删除N4规则，分配或释放N19隧道资源。

In the case of N19-based forwarding is applied, the followings apply for the PDU Sessions targeting the (DNN, S-NSSAI) associated with a 5G VN group:

在应用基于N19的转发的情况下，以下内容适用于针对与5G VN组相关联的（DNN，S-NSSAI）的PDU Session：

- If the PDU Sessions targeting the same 5G VN group are anchored at different UPFs, the SMF shall create the group-level N4 Session in each involved UPF via N4 Session Establishment procedure (clause 4.4.1.2) in order to establish N19 tunnel(s) between the UPFs and install the N4 rules.

-如果针对相同5G VN组的PDU Session会话锚定在不同的UPF上，则SMF应通过N4 Session Establishment程序（第4.4.1.2条）在每个涉及的UPF中创建组级N4会话，以便在UPF之间建立N19隧道并安装N4规则。

- If the last PDU Session for this 5G VN group is released on a UPF, the SMF may delete the group-level N4 Session in the UPF via N4 Session Release procedure (clause 4.4.1.4) and release the N19 tunnel(s) between this UPF and other UPF(s) serving the 5G VN group via update of the corresponding N4 rules.

-如果该5G VN组的最后一个PDU会话在UPF上发布，则SMF可通过N4会话发布程序（第4.4.1.4条）删除UPF中的组级N4会话，并通过更新相应的N4规则来释放该UPF与服务于5G VN组的其他UPF之间的N19隧道。

- If an address of the UE within the 5G VN group is allocated or released, the SMF may update the N4 rules(e.g. PDRs and FARs) related to the UE address into the group-level N4 Session context via N4 Session Modification procedure (clause 4.4.1.3).

-如果分配或释放5G VN组内的UE地址，则SMF可通过N4 Session Modification程序（第4.4.1.3条）将与UE地址相关的N4规则（例如PDR和FAR）更新到组级N4 Session上下文中。