学习5G知识，势必要去阅读相关的技术标准，而纯英文的标准协议对于初学者来说是个门槛。

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在自己学习的同时，也将翻译内容分享给给广大网友。由于个人能力有限，翻译不到位的地方还请各位网友们指正。

5.19 Activation and Deactivation of Pre-defined PDRs 激活和停用预定义的PDR

To reduce the signalling overhead for establishing a PFCP session (for a PDU session or a PDN connection) and improve the signalling efficiency, the CP and UP functions may support the Activation and Deactivation of a Pre-defined PDR (ADPDP) feature as described below.

为了减少用于建立PFCP会话的信令开销并提高信令效率，CP和UP功能可支持如下所述的Pre-defined PDR特性的Activation和Deactivation。

When both the CP function and the UP function support the ADPDP feature, the CP function may activate one or more pre-defined PDRs for a PFCP session during a PFCP Session Establishment or a PFCP Session Modification procedure. A pre-defined PDR shall be configured in the UP function before it can be activated in a PFCP session.

当CP功能和UP功能都支持ADPDP功能时，CP功能可以在PFCP Session Establishment或PFCP Session Modification过程期间激活PFCP会话的一个或多个pre-defined PDR。在PFCP会话中激活之前，应在UP功能中配置pre-defined的PDR。

A pre-defined PDR may contain all the necessary packets detection information to identify a service data flow or application traffic which may be common to many PFCP sessions, and it may be configured in the UPF associated with a pre-defined FAR, one or more pre-defined QER(s), and/or one or more pre-defined URR(s).

pre-defined PDR可以包含所有必要的包检测信息，以识别可能对许多PFCP会话公用的业务数据流或应用流量，并且可以在与pre-defined FAR、一个或多个pre-defined QER和/或一个或多个pre-defined URR相关联的UPF中配置该PDR。

Any PFCP session specific information, e.g. traffic endpoint information, may not be part of a pre-defined PDR and is provisioned before or during the activation of the pre-defined PDR.

任何PFCP特定于会话的信息（例如流量端点信息）可能不是pre-defined PDR的一部分，并且在激活pre-defined PDR之前或期间提供的。

To activate one or more pre-defined PDR(s), the CP function shall provide one or more Activate Predefined Rules IE(s) in a Create PDR IE in a PFCP Session Establishment Request, or in a Create PDR IE or an Update PDR IE in a PFCP Session Modification Request message, that references a pre-defined PDR configured in the UP function, with the following information in the Create PDR or Update PDR IE:

为了激活一个或多个pre-defined PDR，CP功能应在PFCP Session Establishment Request中的Create PDR IE中，或在PFCP Session Modification Request消息中的Create PDR IE或Update PDR IE中，提供一个或多个Activate Predefined Rules IE，这些规则引用UP功能中配置的pref-defined PDR，在Create PDR或Update PDR IE中包含以下信息：

- the traffic endpoint that the traffic shall match (e.g. Local F-TEID, UE IP Address or Traffic Endpoint ID);

-流量应匹配的流量端点；

- optionally the QFI that the traffic shall match, e.g. for a UL PDR where UL QoS flow binding verification is required (see clause 5.4.2);

-可选地，流量应匹配的QFI，例如，对于需要UL QoS流绑定验证的UL PDR；

- the precedence to be applied by the UP function among all PDRs of the PFCP session;

-在PFCP会话的所有PDR中由UP功能应用的优先级；

- optionally, an FAR containing instructions related to the processing of the packets matching the pre-defined PDR(s); when present, the UP function shall enforce it instead of the one defined in the pre-defined PDR(s) if any;

-可选地，FAR包含与匹配pre-defined PDR的数据包的处理有关的指令；当存在时，UP功能应强制执行它，而不是pref-defined PDR中定义的指令（如果有的话）；

- optionally, one or more URRs to be used in addition to any URR(s) specified in the pre-defined PDR(s) (e.g. for session level Usage Monitoring);

-可选地，除了在pref-defined PDR中指定的任何URR之外，要使用的一个或多个URR；

- optionally, one or more QERs to be applied in addition to any QER(s) specified in the pre-defined PDR (e.g. for APN-AMBR enforcement).

-除pre-defined PDR中指定的任何QER外，还可以选择应用一个或多个QER。

When a pre-defined PDR is activated for a given PDR, an incoming packet matches the PDR if it matches the traffic endpoint, and the QFI if provisioned and one of the activated pre-defined PDR(s).

当为给定PDR激活pre-defined PDR时，传入的数据包如果与流量端点匹配，则与PDR匹配；如果配置了QFI，则与其中一个激活的pre-defined PDR匹配。

The CP function may update the use of pre-defined PDRs that are already activated in a PFCP session by including one or more Activate Predefined Rules IE(s) or Deactivate Predefined Rules IE(s) in a PFCP Session Modification Request and/or by updating the parameters provisioned in the PDR.

CP功能可以通过在PFCP Session Modification Request中包括一个或多个Activate Predefined Rules IE或Deactivate Predefined Rules IE和/或通过更新PDR中提供的参数来更新已经在PFCP会话中激活的pre-defined PDR的使用。

NOTE: The CP function cannot change a pre-defined PDR via PFCP session related procedure.

注意：CP功能无法通过与PFCP会话相关的过程来更改预定义的PDR。

The CP function may deactivate a pre-defined PDR that is already activated in a PFCP session by including the Deactivate Predefined Rules IE in a PFCP Session Modification Request requesting to deactivate the predefined PDR(s).

CP功能可以通过在请求停用预定义PDR的PFCP Session Modification Request中包括Deactivate Predefined Rules IE来停用已经在PFCP会话中激活的pre-defined PDR。

In addition, this feature allows to define a group of pre-defined PDRs which can be activated, updated, and deactivated together. This allows the CP function to further optimize the signaling towards the UP function.

此外，此功能允许定义一组pre-defined的PDR，这些PDR可以一起激活、更新和停用。这允许CP功能进一步优化发往UP功能的信令。

To activate, update, or deactivate a group of pre-defined PDRs, the CP shall follow the same procedure as for activating, updating, and deactivating a pre-defined PDR, but it shall use an Activate Predefined Rules IE that refers to a group of pre-defined PDRs.

要激活、更新或停用一组pre-defined PDR，CP应遵循与激活、更新和停用pre-defined PDR相同的程序，但应使用引用一组pre-defined PDR的Activate Predefined Rules IE。