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。

个人在学习5G标准3GPP TS 29244-g30过程中，也发现google的机器翻译实在晦涩难懂，所以个人在借助百度翻译（中国人更懂中文）的同时，人工对每句话进行了校对。

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。

5.2.7 Multi-Access Rule Handling (for 5GC) 多访问规则处理（用于5GC）

5.2.7.1 General

The UP function (i.e. the UPF) shall support the Multi-Access Rule (MAR) if it supports the ATSSS feature (see MPTCP and ATSSS-LL flags in UP Function Features, Table 8.2.25-1).

如果UP功能支持ATSSS功能，则应支持多址规则（MAR）。

The CP function (i.e. the SMF) shall provision in the UP function acting as the PDU Session Anchor (PSA) and supporting the ATSSS feature, one and only one MAR for every downlink PDR of a PFCP session that is established for a Multi-Access (MA) PDU session.

CP功能应在UP功能中作为PDU Session Anchor并支持ATSSS功能，为Multi-Access PDU会话建立的PFCP会话的每个下行链路PDR提供一个且仅一个MAR。

The MAR provides instructions to the UP function on how to forward the packets matching the PDR over 3GPP and non-3GPP accesses. See clauses 5.8.2.11.8 and 5.32.8 in 3GPP TS 23.501 [28].

MAR向UP功能提供关于如何通过3GPP和non-3GPP访问转发与PDR匹配的分组的指令。

In a MAR, the CP function (i.e. the SMF) shall:

在MAR中，CP功能应：

- instruct the UPF which traffic steering functionality to use, i.e. MPTCP or ATSSS-LL, using the Steering Functionality IE (see clause 8.2.124);

-指示UPF使用哪个流量控制功能，即MPTCP或ATSSS-LL，使用Steering Funcationality IE；

- set the Steering Mode to instruct how the packets shall be distributed across 3GPP and non-3GPP accesses, e.g. Active-Standby, Smallest Delay, Load Balancing and Priority Based (see clause 8.2.125);

-设置Steering Mode，指示如何在3GPP和non-3GPP访问之间分配数据包，例如，Active-Standby、Smallest Delay、Load Balancing和Priority Based；

- provision access specific forwarding action information including:

-提供访问特定的转发操作信息，包括：

- a FAR ID which control the packets forwarding either to 3GPP access or non-3GPP access;

-FAR ID，其控制向3GPP接入或non-3GPP接入转发的分组；

FAR ID，它控制将数据包转发到3GPP接入或非3GPP接入；

- a Weight to indicate the proportion of traffic to be forwarded by the given FAR when the Steering Mode is set to "Load Sharing";

-当Steering Mode设置为“Load Sharing”时，指示给定FAR转发的流量比例的权重；

- a Priority to indicate at which condition the traffic is to be forwarded by the given FAR when the Steering Mode is set to "Active-Standby" or "Priority-Based";

-一种优先级，用于指示当Steering Mode设置为“Active-Standby”或“Priority-Based”时，给定FAR将在何种条件下转发业务；

- a list of URR IDs to enable the SMF to request separate usage report for different accesses.

-URR ID列表，使SMF能够为不同的访问请求单独的使用情况报告。

The CP function may provision one or more MAR(s) (for different PDRs) per PFCP session. Different MARs of a same PFCP session may be provisioned with a different steering functionality and/or a different steering mode. Different MARs of a same PFCP session may be associated with the same FAR(s).

CP功能可以为每个PFCP会话提供一个或多个MAR。同一PFCP会话的不同MAR可以配置有不同的转向功能和/或不同的转向模式。同一PFCP会话的不同MAR可能与同一FAR相关联。

If a UE indicates it supports MPTCP and ATSSS-LL, and if the network determines to apply both MPTCP functionality and ATSSS-LL functionality for the UE's PDU session, the CP function shall provision separate downlink PDRs for MPTCP traffic and for Non-MPTCP traffic. Correspondingly, different MARs shall be provisioned and associated with the separate downlink PDRs. The steering functionality shall be set to ATSSS-LL for the MAR associated with the downlink PDR for non MPTCP traffic.

如果UE表示支持MPTCP和ATSSS-LL，并且如果网络决定为UE的PDU会话应用MPTCP功能和ATSSS-LL功能，则CP功能应为MPTCP流量和Non-MPTCP流量提供单独的下行链路PDR。相应地，应设置不同的MAR，并与单独的下行PDR关联。对于与非MPTCP流量的下行链路PDR相关的MAR，转向功能应设置为ATSSS-LL。

The UP function shall distribute the downlink traffic across the two access networks (and the two N3/N9 tunnels) according to the instructions received in the MAR and feedback information received from the UE via the user plane (e.g. access network Unavailability or Availability reports for ATSSS-LL received by PMF, see 3GPP TS 24.193 [59]).

UP功能应根据在MAR中接收到的指令和经由用户平面从UE接收到的反馈信息，在两个接入网之间分配下行链路流量。