If the connectivity with the requested DN is rejected by the network, the SMF shall create a PDU SESSION ESTABLISHMENT REJECT message.
如果与请求DN的连接被网络拒绝,SMF应创建PDU会话建立拒绝消息。
The SMF shall set the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message to indicate the reason for rejecting the PDU session establishment.
SMF应设置PDU会话建立拒绝消息的5GSM原因IE,以指示拒绝PDU会话建立的原因。
The 5GSM cause IE typically indicates one of the following SM cause values:
5GSM原因IE通常表示以下SM原因值之一:
#8    operator determined barring;
#8 运营商确定的阻止‘
#26    insufficient resources;
#26资源不足;
#27    missing or unknown DNN;
#27 DNN缺失或未知;
#28    unknown PDU session type;
#28未知PDU会话类型;
#29    user authentication or authorization failed;
#29用户身份验证或授权失败;
#31    request rejected, unspecified;
#31请求被拒绝,未指明;
#32    service option not supported;
#32不支持服务选项;
#33    requested service option not subscribed;
#33未订阅请求的服务选项;
#35    PTI already in use;
#35 PTI已在使用;
#38    network failure;
#38网络故障;
#39    reactivation requested;
#39请求重新激活;
#46    out of LADN service area;
#46超出LADN服务区;
#50    PDU session type IPv4 only allowed;
#仅允许50 PDU会话类型IPv4;
#51    PDU session type IPv6 only allowed;
#仅允许51 PDU会话类型IPv6;
#54    PDU session does not exist;
#54 PDU会话不存在;
#57:    PDU session type IPv4v6 only allowed;
#57:仅允许PDU会话类型IPv4v6;
#58:    PDU session type Unstructured only allowed;
#58:仅允许PDU会话类型为非结构化;
#61:    PDU session type Ethernet only allowed;
#61:仅允许PDU会话类型以太网;
#67    insufficient resources for specific slice and DNN;
#67特定切片和DNN的资源不足;
#68    not supported SSC mode;
#68不支持SSC模式;
#69    insufficient resources for specific slice;
#69特定切片的资源不足;
#70    missing or unknown DNN in a slice;
#70切片中缺失或未知DNN;
#82    maximum data rate per UE for user-plane integrity protection is too low;
#82用于用户面完整性保护的每个UE的最大数据速率过低;
#86    UAS services not allowed; or
#86不允许UAS服务;或
#95 – 111    protocol errors.
#95–111协议错误。

If the PDU SESSION ESTABLISHMENT REQUEST message includes a PDU session type IE set to "IPv6", and the subscription, the SMF configuration, or both, are limited to IPv4 only for the requested DNN, the SMF shall include the 5GSM cause value #50 "PDU session type IPv4 only allowed" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果PDU会话建立请求消息包括设置为“IPv6”的PDU会话类型IE,并且订阅、SMF配置或两者都仅限于请求的DNN的IPv4,则SMF应在PDU会话建立拒绝消息的5GSM原因IE中包括5GSM原因值#50“PDU会话类型IPv4仅允许”。
If the PDU SESSION ESTABLISHMENT REQUEST message includes a PDU session type IE set to "IPv6", and the subscription, the SMF configuration, or both, support none of "IPv4" and "IPv6" PDU session types for the requested DNN, the SMF shall include the 5GSM cause value #28 "unknown PDU session type" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果PDU会话建立请求消息包括设置为“IPv6”的PDU会话类型IE,并且订阅、SMF配置或两者都不支持请求DNN的“IPv4”和“IPv6”PDU会话类型,则SMF应在PDU会话建立拒绝消息的5GSM原因IE中包括5GSM原因值#28“未知PDU会话类型”。

If the PDU SESSION ESTABLISHMENT REQUEST message includes a PDU session type IE set to "IPv4", and the subscription, the SMF configuration, or both, are limited to IPv6 only for the requested DNN, the SMF shall include the 5GSM cause value #51 "PDU session type IPv6 only allowed" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果PDU会话建立请求消息包括设置为“IPv4”的PDU会话类型IE,并且订阅、SMF配置或两者仅限于请求DNN的IPv6,则SMF应在PDU会话建立拒绝消息的5GSM原因IE中包括5GSM原因值#51“PDU会话类型IPv6仅允许”。
If the PDU SESSION ESTABLISHMENT REQUEST message includes a PDU session type IE set to "IPv4", and the subscription, the SMF configuration, or both, support none of "IPv4" and "IPv6" PDU session types for the requested DNN, the SMF shall include the 5GSM cause value #28 "unknown PDU session type" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果PDU会话建立请求消息包括设置为“IPv4”的PDU会话类型IE,并且订阅、SMF配置或两者都不支持请求DNN的“IPv4”和“IPv6”PDU会话类型,则SMF应在PDU会话建立拒绝消息的5GSM原因IE中包括5GSM原因值#28“未知PDU会话类型”。

If the PDU SESSION ESTABLISHMENT REQUEST message includes a PDU session type IE set to "IPv4v6", and the subscription, the SMF configuration, or both, support none of "IPv4v6", "IPv4" and "IPv6" PDU session types for the requested DNN, the SMF shall include the 5GSM cause value #28 "unknown PDU session type" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果PDU会话建立请求消息包括设置为“IPv4v6”的PDU会话类型IE,并且订阅、SMF配置或两者都不支持请求DNN的“IPv4v6”、“IPv4”和“IPv6”PDU会话类型,则SMF应在PDU会话建立拒绝消息的5GSM原因IE中包括5GSM原因值#28“未知PDU会话类型”。
If the PDU SESSION ESTABLISHMENT REQUEST message includes a PDU session type IE set to "Unstructured" or "Ethernet", and the subscription, the SMF configuration, or both, do not support the PDU session type for the requested DNN, the SMF shall include the 5GSM cause value #28 "unknown PDU session type" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果PDU会话建立请求消息包括设置为“非结构化”或“以太网”的PDU会话类型IE,并且订阅、SMF配置或两者都不支持所请求DNN的PDU会话类型,则SMF应在PDU会话建立拒绝消息的5GSM原因IE中包括5GSM原因值#28“未知PDU会话类型”。
If the PDU SESSION ESTABLISHMENT REQUEST message is to establish an MA PDU session and includes a PDU session type IE set to "Unstructured", and the SMF configuration does not support the PDU session type, the SMF shall include the 5GSM cause value #28 "unknown PDU session type" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果PDU会话建立请求消息要建立MA PDU会话,并且包括设置为“非结构化”的PDU会话类型IE,并且SMF配置不支持PDU会话类型,则SMF应在PDU会话建立拒绝消息的5GSM原因IE中包括5GSM原因值#28“未知PDU会话类型”。
If the PDU SESSION ESTABLISHMENT REQUEST message contains the SSC mode IE indicating an SSC mode not supported by the subscription, the SMF configuration, or both of them, and the SMF decides to rejects the PDU session establishment, the SMF shall include the 5GSM cause value #68 "not supported SSC mode" in the 5GSM cause IE and the SSC modes allowed by SMF in the Allowed SSC mode IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果PDU会话建立请求消息包含SSC模式IE,指示订阅、SMF配置或两者均不支持的SSC模式,并且SMF决定拒绝PDU会话建立,SMF应包括5GSM原因IE中的5GSM原因值#68“不支持的SSC模式”,以及PDU会话建立拒绝消息的允许SSC模式IE中SMF允许的SSC模式。
If the PDU SESSION ESTABLISHMENT REQUEST message is to establish an MA PDU session and MA PDU session is not allowed due to operator policy and subscription, and the SMF decides to reject the PDU session establishment, the SMF shall include the 5GSM cause value #33 "requested service option not subscribed" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果PDU会话建立请求消息要建立MA PDU会话,并且由于运营商策略和订阅而不允许MA PDU会话,并且SMF决定拒绝PDU会话建立,则SMF应在PDU会话建立拒绝消息的5GSM原因IE中包含5GSM原因值#33“请求的服务选项未订阅”。
If the PDU SESSION ESTABLISHMENT REQUEST message is identified to be for C2 communication and:
a)    does not include the Service-level-AA container IE with the service-level device ID set to the CAA-level UAV ID; or
b)    does not include the Service-level-AA container IE with the service-level-AA payload set to the C2 authorization payload,
如果PDU会话建立请求消息被识别为用于C2通信,并且:
a) 不包括服务级别设备ID设置为CAA级UAV ID的服务级别AA容器IE;或
b) 不包括服务级别AA有效载荷设置为C2授权有效载荷的服务级别AA容器IE,
the SMF shall reject the PDU SESSION ESTABLISHMENT REQUEST message by transmitting a PDU SESSION ESTABLISHMENT REJECT message with 5GSM cause IE set to 5GSM cause value #86 "UAS services not allowed".
SMF应通过发送PDU会话建立拒绝消息来拒绝PDU会话建立请求消息,5GSM原因IE设置为5GSM原因值#86“不允许UAS服务”。
In 3GPP access, if the operator's configuration requires user-plane integrity protection for the PDU session and, the maximum data rate per UE for user-plane integrity protection supported by the UE for uplink or the maximum data rate per UE for user-plane integrity protection supported by the UE for downlink, or both, are lower than required by the operator's configuration, the SMF shall include the 5GSM cause value #82 "maximum data rate per UE for user-plane integrity protection is too low" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
在3GPP接入中,如果运营商的配置需要PDU会话的用户面完整性保护,并且由UE支持的用于上行链路的用户面完整性保护的每个UE的最大数据速率或由UE支持的用于下行链路的用户面完整性保护的每个UE的最大数据速率,或者两者都低于运营商配置的要求,SMF应在PDU会话建立拒绝消息的5GSM原因IE中包含5GSM原因值#82“用户面完整性保护的每个UE的最大数据速率过低”。
If the UE requests a PDU session establishment for an LADN when the UE is located outside of the LADN service area, the SMF shall include the 5GSM cause value #46 "out of LADN service area" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果当UE位于LADN服务区域之外时,UE请求建立LADN的PDU会话,则SMF应在PDU会话建立拒绝消息的5GSM原因IE中包括5GSM原因值#46“LADN服务区域之外”。
If the DN authentication of the UE was performed with the PDU session authentication and authorization procedure and completed unsuccessfully, the SMF shall include the 5GSM cause value #29 "user authentication or authorization failed" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message and shall set the EAP message IE of the PDU SESSION ESTABLISHMENT REJECT message to an EAP-failure message as specified in IETF RFC 3748 [34], provided by the DN.
如果使用PDU会话身份验证和授权过程执行了UE的DN身份验证,但未成功完成,SMF应在PDU会话建立拒绝消息的5GSM原因IE中包含5GSM原因值#29“用户身份验证或授权失败”,并应将PDU会话建立拒绝消息的EAP消息IE设置为由DN提供的IETF RFC 3748[34]中规定的EAP失败消息。
If the DN authentication of the UE was performed with the service-level authentication and authorization procedure and completed unsuccessfully, the SMF shall include the 5GSM cause value #29 "user authentication or authorization failed" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message and shall include the service-level-AA response provided by DN in the Service-level-AA container IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果UE的DN认证是使用服务级认证和授权过程执行的,并且未成功完成,SMF应在PDU会话建立拒绝消息的5GSM原因IE中包含5GSM原因值#29“用户身份验证或授权失败”,并应在PDU会话建立拒绝消息的服务级别AA容器IE中包含DN提供的服务级别AA响应。
Based on the local policy and user's subscription data, if a PDU session is being established with the request type set to "existing PDU session" and the SMF determines the UE has:
a)    moved between a tracking area in NB-N1 mode and a tracking area in WB-N1 mode;
b)    moved between a tracking area in NB-S1 mode and a tracking area in WB-N1 mode; or
c)    moved between a tracking area in WB-S1 mode and a tracking area in NB-N1 mode,
the SMF may reject the PDU SESSION ESTABLISHMENT REQUEST message and:
a)    include the 5GSM cause value #39 "reactivation requested" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message; or
b)    include a 5GSM cause value other than #39 "reactivation requested" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
基于本地策略和用户的订阅数据,如果正在建立PDU会话,并且请求类型设置为“现有PDU会话”,并且SMF确定UE具有:
a) 在NB-N1模式的跟踪区域和WB-N1模式的跟踪区域之间移动;
b) 在NB-S1模式下的跟踪区域和WB-N1模式下的跟踪区域之间移动;或
c) 在WB-S1模式的跟踪区域和NB-N1模式的跟踪区域之间移动,
SMF可以拒绝PDU会话建立请求消息,并且:
a) 在PDU会话建立拒绝消息的5GSM原因IE中包括5GSM原因值#39“重新激活请求”;或
b) 在PDU会话建立拒绝消息的5GSM原因IE中包括除#39“重新激活请求”之外的5GSM原因值。
NOTE 1:    The included 5GSM cause value is up to the network implementation.
注1:包含的5GSM原因值取决于网络实现。

If the PDU session cannot be established due to resource unavailability in the UPF, the SMF shall include the 5GSM cause value #26 "insufficient resources" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
如果由于UPF中的资源不可用而无法建立PDU会话,SMF应在PDU会话建立拒绝消息的5GSM原因IE中包含5GSM原因值#26“资源不足”。
Based on the user's subscription data and the operator policy, if the SMF determines that the UUAA-SM procedure needs to be performed for a UE but the SMF does not receives the service-level device ID set to the CAA-level UAV ID in the Service-level-AA container IE of the PDU SESSION ESTABLISHMENT REQUEST message from the UE, the SMF shall include the 5GSM cause value #86 "UAS services not allowed" in the 5GSM cause IE of the PDU SESSION ESTABLISHMENT REJECT message.
基于用户的订阅数据和运营商策略,如果SMF确定需要为UE执行UUAA-SM过程,但SMF没有从UE接收到PDU会话建立请求消息的服务级别AA容器IE中设置为CAA级UAV ID的服务级别设备ID,SMF应在PDU会话建立拒绝消息的5GSM原因IE中包含5GSM原因值#86“不允许UAS服务”。

The network may include a Back-off timer value IE in the PDU SESSION ESTABLISHMENT REJECT message.
网络可以在PDU会话建立拒绝消息中包括退避定时器值IE。
If the 5GSM cause value is #26 "insufficient resources", #67 "insufficient resources for specific slice and DNN", or #69 "insufficient resources for specific slice" and the PDU SESSION ESTABLISHMENT REQUEST message was received from a UE configured for high priority access in selected PLMN or the request type provided during the PDU session establishment is set to "initial emergency request" or "existing emergency PDU session", the network shall not include a Back-off timer value IE.
如果5GSM原因值为#26“资源不足”、#67“特定切片和DNN的资源不足”,或者#69“特定切片的资源不足”,并且在所选PLMN中从配置为高优先级接入的UE接收到PDU会话建立请求消息,或者在PDU会话建立期间提供的请求类型设置为“初始紧急请求”或“现有紧急PDU会话”,网络不应包括退避计时器值IE。
If the 5GSM cause value is #29 "user authentication or authorization failed ", the network should include a Back-off timer value IE.
如果5GSM原因值为#29“用户身份验证或授权失败”,则网络应包括退避计时器值IE。

If the Back-off timer value IE is included and the 5GSM cause value is different from #26 "insufficient resources", #28 "unknown PDU session type", #46 "out of LADN service area", "#50 "PDU session type IPv4 only allowed", #51 "PDU session type IPv6 only allowed", #54 "PDU session does not exist", #57 "PDU session type IPv4v6 only allowed", #58 "PDU session type Unstructured only allowed", #61 "PDU session type Ethernet only allowed", #67 "insufficient resources for specific slice and DNN", #68 "not supported SSC mode", and #69 "insufficient resources for specific slice", the network may include the Re-attempt indicator IE to indicate whether the UE is allowed to attempt a PDN connectivity procedure in the PLMN for the same DNN in S1 mode, and whether another attempt in S1 mode or in N1 mode is allowed in an equivalent PLMN.
如果包含退避计时器值IE,并且5GSM原因值不同于#26“资源不足”、#28“未知PDU会话类型”、#46“超出LADN服务区域”,“#50”PDU会话类型IPv4 only allowed“,#51”PDU会话类型IPv6 only allowed“,#54”PDU会话不存在“,#57”PDU会话类型IPv4v6 only allowed“,#58”PDU会话类型Unstructured only allowed“,#61”PDU会话类型Ethernet only allowed“,#67”特定切片和DNN的资源不足“,#68”不支持SSC模式,“和#69”特定切片的资源不足“,网络可包括重新尝试指示符IE,以指示是否允许UE在PLMN中尝试S1模式下相同DNN的PDN连接过程,以及是否允许在等效PLMN中再次尝试S1模式或N1模式。
If the 5GSM cause value is #50 "PDU session type IPv4 only allowed", #51 "PDU session type IPv6 only allowed", #57 "PDU session type IPv4v6 only allowed", #58 "PDU session type Unstructured only allowed", or #61 "PDU session type Ethernet only allowed", the network may include the Re-attempt indicator IE without Back-off timer value IE to indicate whether the UE is allowed to attempt a PDU session establishment procedure in an equivalent PLMN in N1 mode using the same PDU session type for the same DNN (or no DNN, if no DNN was indicated by the UE) and the same S-NSSAI (or no S-NSSAI, if no S-NSSAI was indicated by the UE).
如果5GSM原因值为#50“只允许使用IPv4的PDU会话类型”、#51“只允许使用IPv6的PDU会话类型”、#57“只允许使用IPv4v6的PDU会话类型”、#58“只允许使用非结构化的PDU会话类型”或#61“只允许使用以太网的PDU会话类型”,该网络可以包括没有退避计时器值IE的重新尝试指示符IE,以指示是否允许UE在N1模式下使用相同的PDU会话类型,针对相同的DNN(或没有DNN,如果UE没有指示DNN)和相同的S-NSSAI(或没有S-NSSAI,如果UE没有指示S-NSSAI)。
The SMF shall send the PDU SESSION ESTABLISHMENT REJECT message.
SMF应发送PDU会话建立拒绝消息。
Upon receipt of a PDU SESSION ESTABLISHMENT REJECT message and a PDU session ID, using the NAS transport procedure as specified in subclause 5.4.5, the UE shall stop timer T3580 shall release the allocated PTI value and shall consider that the PDU session was not established.
在收到PDU会话建立拒绝消息和PDU会话ID后,使用5.4.5节中规定的NAS传输程序,UE应停止计时器T3580,并应释放分配的PTI值,并应考虑未建立PDU会话。

If the PDU SESSION ESTABLISHMENT REQUEST message was sent with request type set to "initial emergency request" or "existing emergency PDU session" and the UE receives a PDU SESSION ESTABLISHMENT REJECT message, then the UE may:
a)    inform the upper layers of the failure of the procedure; or
NOTE 2:    This can result in the upper layers requesting another emergency call attempt using domain selection as specified in 3GPP TS 23.167 [6].
b)    de-register locally, if not de-registered already, attempt initial registration for emergency services.
如果发送的PDU会话建立请求消息的请求类型设置为“初始紧急请求”或“现有紧急PDU会话”,并且UE接收到PDU会话建立拒绝消息,则UE可以:
a) 通知上层程序失败;或
注2:这可能导致上层使用3GPP TS 23.167[6]中规定的域选择请求另一次紧急呼叫尝试。

b) 在本地注销,如果尚未注销,请尝试对紧急服务进行初始注册。
If the PDU SESSION ESTABLISHMENT REJECT message includes 5GSM cause #39 "reactivation requested" and the PDU session is being transferred from EPS to 5GS and established with the request type set to "existing PDU session", the UE should re-initiate the UE-requested PDU session establishment procedure as specified in subclause 6.4.1 for:
a)    the PDU session type associated with the transferred PDU session;
b)    the SSC mode associated with the transferred PDU session;
c)    the DNN associated with the transferred PDU session; and
d)    the S-NSSAI associated with (if available in roaming scenarios) a mapped S-NSSAI if provided in the UE-requested PDU session establishment procedure of the transferred PDU session.
如果PDU会话建立拒绝消息包括5GSM原因#39“请求重新激活”,并且PDU会话正在从EPS转移到5GS,并在请求类型设置为“现有PDU会话”的情况下建立,则UE应根据第6.4.1节的规定重新启动UE请求的PDU会话建立过程,以:
a) 与转移的PDU会话相关联的PDU会话类型;
b) 与转移的PDU会话相关联的SSC模式;
c) 与转移的PDU会话相关联的DNN;和
d) 如果在转移的PDU会话的UE请求的PDU会话建立过程中提供了与映射的S-NSSAI相关联的S-NSSAI(如果在漫游场景中可用)。
If the PDU SESSION ESTABLISHMENT REJECT message includes 5GSM cause #86 "UAS services not allowed" and the UE has not included the service-level device ID in the Service-level-AA container IE of the PDU SESSION ESTABLISHMENT REQUEST message and set the value to the CAA-level UAV ID:
a)    the UE shall not send another PDU SESSION ESTABLISHMENT REQUEST message for UAS services without including the CAA-level UAV ID in the service-level device ID of the Service-level-AA container IE; and
b)    upon receipt of the request from the upper layers to establish a PDU session for UAS services, the UE shall initiate the UE-requested PDU session establishment procedure by including the service-level device ID in the Service-level-AA container IE of the PDU SESSION ESTABLISHMENT REQUEST message and set the value to the CAA-level UAV ID as specified in subclause 6.4.1.2.
如果PDU会话建立拒绝消息包含5GSM原因#86“UAS服务不允许”,且UE未在PDU会话建立请求消息的服务级别AA容器IE中包含服务级别设备ID,并将该值设置为CAA级别UAV ID:
a) 在服务级别AA容器IE的服务级别设备ID中不包括CAA级别UAV ID的情况下,UE不得为UAS服务发送另一个PDU会话建立请求消息;和
b) 在收到上层为UAS服务建立PDU会话的请求后,UE应通过将服务级别设备ID包括在PDU会话建立请求消息的服务级别AA容器IE中来启动UE请求的PDU会话建立过程,并将该值设置为6.4.1.2节中规定的CAA级UAV ID。

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