3GPP TS 29244-h20 中英文对照 | 5.23 5G VN Group Communication (for 5GC)

Posted 2021-12-30 COCOgsta

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5.23 5G VN Group Communication (for 5GC)

Stage 2 requirements for the support of 5G VN communication are specified in clauses 4.4.6 and 5.8.2.13 of 3GPP TS 23.501[28].

3GPP TS 23.501[28]第4.4.6条和第5.8.2.13条规定了支持5G VN通信的第2阶段要求。

The 5G VN group communication includes one to one communication and one to many communication.

5G VN组通信包括一对一通信和一对多通信。

One to one communication supports forwarding of unicast traffic between two UEs within a 5G VN, or between a UE and a device on the DN.

一对一通信支持在5G VN内的两个UE之间，或在UE和DN上的设备之间转发单播流量。

One to many communication supports forwarding of multicast traffic and broadcast traffic from one UE (or device on the DN) to many/all UEs within a 5G VN and devices on the DN.

一对多通信支持将多播流量和广播流量从一个UE（或DN上的设备）转发到5G VN内的多个/所有UE和DN上的设备。

5G VN Group Communication is optional to support. The SMF may instruct the UPF to forward unicast and/or broadcast traffic as described below if the UPF has indicated support of 5G VN Group Communication (see feature GCOM in clause 8.2.25).

支持5G VN Group Communication是可选的。如果UPF已表示支持5G VN Group Communication，则SMF可指示UPF转发如下所述的单播和/或广播流量（参见第8.2.25条中的功能GCOM）。

There are 3 different traffic forwarding methods, i.e. UPF local switching, N6-based forwarding and N19-based forwarding, to forward traffic within the 5G VN group.

有3种不同的流量转发方法，即UPF本地交换、基于N6的转发和基于N19的转发，用于转发5G VN组内的流量。

For all methods, traffic forwarding within the 5G VN group is realized by using a UPF internal interface ("5G VN Internal") and a two-step detection and forwarding process. In the first step, the packets received from any 5G VN group member (via it's PDU Session, via N6 or via N19) are forwarded to the UPF internal interface (i.e. Destination Interface set to "5G VN Internal"). In the second step, PDRs installed at the UPF internal interface (i.e. Source Interface set to "5G VN Internal") detect the packet and forward it to the respective 5G VN group member (via it's PDU Session, via N6 or via N19). If more than one 5G VN group has to be supported, the Network Instance set to a value representing the 5G VN group is used in addition to the UPF internal interface to enable isolation of the 5G VN group communication during the packet detection and forwarding process.

对于所有方法，通过使用UPF内部接口（“5G VN Internal”）和两步检测和转发过程来实现5G VN组内的流量转发。在第一步中，从任何5G VN组成员（通过其PDU Session、通过N6或通过N19）接收的数据包被转发到UPF内部接口（即，Destination Interface设置为“5G VN Internal”）。在第二步中，安装在UPF内部接口（即，源接口设置为“5G VN internal”）的PDR检测数据包并将其转发给相应的5G VN组成员（通过其PDU会话、通过N6或通过N19）。如果必须支持多个5G VN组，则除了UPF内部接口之外，还使用被设置为表示5G VN组的值的Network Instance，以在分组检测和转发过程中实现5G VN组通信的隔离。

When N19-based forwarding is used, the SMF may correlate all the PDU sessions for the 5G VN Group members to generate the PDR and FAR corresponding to the group level N4-session for UPF as specified in clause 5.29.3 of 3GPP TS 23.501 [28].

当使用基于N19的转发时，SMF可将5G VN Group成员的所有PDU会话关联起来，以生成PDR和FAR，对应于3GPP TS 23.501[28]第5.29.3条中规定的UPF组级N4会话。

For Ethernet unicast traffic on 5G VN Group Communication, the SMF may either explicitly configure DL PDR with the MAC addresses detected by the UPF on PDU Sessions supporting a 5G VN group, or rely on MAC address learning in UPF related with a 5G VN group by setting the Ethernet PDU Session Information indication in the DL PDR of the "5G VN internal" interface as specified in clause 5.8.2.13.0 of 3GPP TS 23.501 [28].

对于5G VN Group Communication上的Ethernet单播业务，SMF可以使用UPF在支持5G VN组的PDU Session上检测到的MAC地址显式地配置DL PDR，或者通过在分组的DL PDR中设置Ethernet PDU Session Information指示来依赖与5G VN组相关的UPF中的MAC地址学习3GPP TS 23.501[28]第5.8.2.13.0条规定的“5G VN内部”接口。

To enable IP or Ethernet type broadcast traffic forwarding of a 5G VN Group, the SMF may provide the PDRs related to the group level N4-session and each 5G VN group member' N4 Session to the UPF as specified in clause 5.8.2.13.3 of 3GPP TS 23.501 [28].

为了启用5G VN Group的IP或Ethernet类型广播流量转发，SMF可以按照3GPP TS 23.501[28]第5.8.2.13.3条的规定，向UPF提供与组级N4会话和每个5G VN组成员的N4会话相关的PDR。

The details of the PDR and FAR setting over N4 for unicast traffic forwarding within a 5G VN are specified in clauses 5.8.2.13.1 and 5.8.2.13.2 of 3GPP TS 23.501[28].

3GPP TS 23.501[28]第5.8.2.13.1和5.8.2.13.2条规定了5G VN内单播流量转发的PDR和N4上的FAR设置的详细信息。

The details of the PDR and FAR setting over N4 for broadcast traffic forwarding within a 5G VN are specified in clause 5.8.2.13.3 of 3GPP TS 23.501[28].

3GPP TS 23.501[28]第5.8.2.13.3条规定了5G VN内广播业务转发的PDR和N4上的FAR设置的详细信息。