6.4.1.6 Abnormal cases in the UE

The following abnormal cases can be identified:
可以识别以下异常情况：
a)    Expiry of timer T3580
a） 定时器T3580到期
    The UE shall, on the first expiry of the timer T3580:
    UE应在定时器T3580第一次到期时：
-    if the PDU SESSION ESTABLISHMENT REQUEST message was sent with request type set to "initial emergency request" or "existing emergency PDU session", then the UE may:
-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”，则UE可以：
a)    inform the upper layers of the failure of the procedure; or
a） 通知上层程序的失败；或
NOTE 1:    This can result in the upper layers requesting another emergency call attempt using domain selection as specified in 3GPP TS 23.167 [6].
注1：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。The following abnormal cases can be identified:
可以识别以下异常情况：
a)    Expiry of timer T3580
a） 定时器T3580到期
    The UE shall, on the first expiry of the timer T3580:
    UE应在定时器T3580第一次到期时：
-    if the PDU SESSION ESTABLISHMENT REQUEST message was sent with request type set to "initial emergency request" or "existing emergency PDU session", then the UE may:
-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”，则UE可以：
a)    inform the upper layers of the failure of the procedure; or
a） 通知上层程序的失败；或
NOTE 1:    This can result in the upper layers requesting another emergency call attempt using domain selection as specified in 3GPP TS 23.167 [6].
注1：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)    de-register locally, if not de-registered already, attempt initial registration for emergency services.
b） 在本地取消注册，如果尚未取消注册，请尝试为紧急服务进行初始注册。
    If the UE sent the PDU SESSION ESTABLISHMENT REQUEST message in order to perform a handover of an existing emergency PDU session between 3GPP access and non-3GPP access, the UE shall consider that the emergency PDU session is associated with the source access type.
    如果UE发送PDU会话建立请求消息以在3GPP接入和非3GPP接入之间执行现有紧急PDU会话的切换，则UE应认为紧急PDU对话与源接入类型相关联。

-    otherwise, retransmit the PDU SESSION ESTABLISHMENT REQUEST message and the PDU session information which was transported together with the initial transmission of the PDU SESSION ESTABLISHMENT REQUEST message and shall reset and start timer T3580, if still needed. This retransmission can be repeated up to four times, i.e. on the fifth expiry of timer T3580, the UE shall abort the procedure, release the allocated PTI and enter the state PROCEDURE TRANSACTION INACTIVE. If the UE sent the PDU SESSION ESTABLISHMENT REQUEST message in order to perform a handover of an existing non-emergency PDU session between 3GPP access and non-3GPP access, the UE shall consider that the PDU session is associated with the source access type.

-否则，重新传输PDU会话建立请求消息和PDU会话信息，该信息与PDU会话确立请求消息的初始传输一起传输，并且如果仍然需要，应重置并启动定时器T3580。此重传最多可重复四次，即在定时器T3580第五次到期时，UE应中止该过程，释放分配的PTI并进入过程事务非活动状态。如果UE发送PDU会话建立请求消息以在3GPP接入和非3GPP接入之间执行现有非紧急PDU会话的切换，则UE应认为PDU会话与源接入类型相关联。

b)    Upon receiving an indication that the 5GSM message was not forwarded due to routing failure along with a PDU SESSION ESTABLISHMENT REQUEST message with the PDU session ID IE set to the same value as the PDU session ID that was sent by the UE, the UE shall stop timer T3580 and shall abort the procedure. If the UE sent the PDU SESSION ESTABLISHMENT REQUEST message in order to perform a handover of an existing PDU session between 3GPP access and non-3GPP access, the UE shall consider that the PDU session is associated with the source access type.

b） 当接收到由于路由故障而未转发5GSM消息的指示以及PDU会话建立请求消息（PDU会话ID IE设置为与UE发送的PDU会话标识相同的值）时，UE应停止定时器T3580并中止该过程。如果UE发送PDU会话建立请求消息以在3GPP接入和非3GPP接入之间执行现有PDU会话的切换，则UE应认为PDU会话与源接入类型相关联。

b1)    Upon receiving an indication that the 5GSM message was not forwarded due to service area restrictions along with a PDU SESSION ESTABLISHMENT REQUEST message with the PDU session ID IE set to the same value as the PDU session ID that was sent by the UE, the UE shall stop timer T3580 and shall abort the procedure. If the UE sent the PDU SESSION ESTABLISHMENT REQUEST message in order to perform a handover of an existing PDU session between 3GPP access and non-3GPP access, the UE shall consider that the PDU session is associated with the source access type.

b1）在接收到由于服务区域限制5GSM消息未被转发的指示以及PDU会话建立请求消息（PDU会话ID IE设置为与UE发送的PDU会话标识相同的值）时，UE应停止定时器T3580并中止该过程。如果UE发送PDU会话建立请求消息以在3GPP接入和非3GPP接入之间执行现有PDU会话的切换，则UE应认为PDU会话与源接入类型相关联。

b2)    Upon receiving an indication that the 5GSM message was not forwarded because the UE is registered to a PLMN via a satellite NG-RAN cell that is not allowed to operate at the present UE location along with a PDU SESSION ESTABLISHMENT REQUEST message with the PDU session ID IE set to the same value as the PDU session ID that was sent by the UE, the UE shall stop timer T3580 and shall abort the procedure. The UE shall not trigger the PDU session establishment procedure until the UE is deregistered from the PLMN.

b2）在接收到由于UE经由不允许在当前UE位置操作的卫星NG-RAN小区注册到PLMN而未转发5GSM消息的指示时，以及PDU会话建立请求消息，其中PDU会话ID IE设置为与UE发送的PDU会话标识相同的值，UE应停止定时器T3580并中止该过程。在UE从PLMN注销之前，UE不应触发PDU会话建立过程。

b3)    Upon receiving an indication that the 5GSM message was not forwarded because the UE is marked in the UE's 5GMM context that it is not allowed to request UAS services along with a PDU SESSION ESTABLISHMENT REQUEST message with the PDU session ID IE set to the same value as the PDU session ID that was sent by the UE, the UE shall stop timer T3580 and shall abort the procedure. The UE shall not trigger the PDU session establishment procedure until the UE is deregistered from the PLMN.
b3）当接收到由于UE在5GMM上下文中被标记为不允许请求UAS服务而未转发5GSM消息的指示时，UE应停止定时器T3580并中止该过程，其中PDU会话ID IE被设置为与UE发送的PDU会话标识相同的值。在UE从PLMN注销之前，UE不应触发PDU会话建立过程。

c)    Collision of UE-requested PDU session establishment procedure and network-requested PDU session release procedure.
c） UE请求的PDU会话建立过程和网络请求的PDU会话释放过程的冲突。
    If the UE receives a PDU SESSION RELEASE COMMAND message after sending a PDU SESSION ESTABLISHMENT REQUEST message to the network, and the PDU session ID in the PDU SESSION RELEASE COMMAND message is the same as the PDU session ID in the PDU SESSION ESTABLISHMENT REQUEST message:
    如果UE在向网络发送PDU会话建立请求消息之后接收到PDU会话释放命令消息，并且PDU会话发布命令消息中的PDU会话ID与PDU会话建立请求消息中的PDU会话ID相同：

i)    if the UE-requested PDU session establishment procedure was to request the establishment of user plane resources on the second access for an MA PDU session established on a first access and the Access type IE is not included in PDU SESSION RELEASE COMMAND or the Access type IE included in PDU SESSION RELEASE COMMAND indicates the first access, the UE shall proceed with the network-requested PDU session release procedure, abort the UE-requested PDU session establishment procedure, stop timer T3580, release the allocated PTI and enter the state PROCEDURE TRANSACTION INACTIVE;

i） 如果UE请求的PDU会话建立过程是为了在第一接入上建立的MA PDU会话请求在第二接入上建立用户面资源，并且PDU会话释放命令中不包括接入类型IE，UE应继续进行网络请求的PDU会话释放过程，中止UE请求的PDUsession建立过程，停止定时器T3580，释放分配的PTI，并进入状态过程TRANSACTION INACTIVE；

ii)    if the PDU SESSION ESTABLISHMENT REQUEST message was sent with request type set to "existing PDU session" or "existing emergency PDU session" in order to perform a handover of an existing PDU session between 3GPP access and non-3GPP access, the UE shall abort the PDU session establishment procedure and proceed with the network-requested PDU session release procedure; or
ii）如果发送的PDU会话建立请求消息的请求类型设置为“现有PDU会话”或“现有紧急PDU会话”，以便在3GPP接入和非3GPP接入之间执行现有PDU对话的切换，则UE应中止PDU对话建立过程并继续进行网络请求的PDU对话释放过程；或

iii)    otherwise, the UE shall ignore the PDU SESSION RELEASE COMMAND message and proceed with the UE-requested PDU session establishment procedure.
iii）否则，UE应忽略PDU会话释放命令消息，并继续UE请求的PDU会话建立过程。
d)    Inter-system change from N1 mode to S1 mode triggered during UE-requested PDU session establishment procedure.
d） 在UE请求的PDU会话建立过程期间触发从N1模式到S1模式的系统间改变。

    If the UE-requested PDU session establishment procedure is triggered for handover of an existing PDU session from non-3GPP access to 3GPP access, and the inter-system change from N1 mode to S1 mode is triggered by the NG-RAN and the UE did not receive response to PDU session establishment request, then the UE shall abort the procedure, stop timer T3580, and notify the upper layer of the handover failure.
    如果触发UE请求的PDU会话建立过程以将现有PDU会话从非3GPP接入切换到3GPP接入，并且NG-RAN触发了从N1模式到S1模式的系统间改变，并且UE没有收到对PDU会话确立请求的响应，则UE应中止该过程，停止定时器T3580，并将切换失败通知给上层。
NOTE 2:    This can result in the upper layer requesting re-initiation of handover from non-3GPP access to 3GPP access after the inter-system change is completed, if still required.
注2：这可能导致上层在系统间变更完成后（如果仍然需要）请求重新发起从非3GPP接入到3GPP接入的切换。

e)    For an MA PDU session established on a single access, upon receipt of a PDU SESSION ESTABLISHMENT ACCEPT message over the other access, if any value of the selected PDU session type, selected SSC mode, 5GSM cause, PDU address, S-NSSAI, DNN IEs in the PDU SESSION ESTABLISHMENT ACCEPT message is different from the corresponding stored value, the UE shall perform a local release of the MA PDU session, and perform the registration procedure for mobility and periodic registration update with a REGISTRATION REQUEST message including the PDU session status IE over both accesses.

e） 对于在一种接入上建立的MA PDU会话，在通过另一种接入接收到PDU会话建立接受消息后，如果PDU会话确立接受消息中所选PDU会话类型、所选SSC模式、5GSM原因、PDU地址、S-NSSAI、DNN IE的任何值与相应存储值不同，UE应执行MA PDU会话的本地释放，并使用包括PDU会话状态IE的注册请求消息在两次访问上执行移动性和定期注册更新的注册过程。

f)    For an MA PDU session has a PDN connection as a user-plane resource, upon receipt of a PDU SESSION ESTABLISHMENT ACCEPT message over non-3GPP access, if any value of the selected PDU session type, selected SSC mode, 5GSM cause, PDU address, S-NSSAI, DNN IEs in the PDU SESSION ESTABLISHMENT ACCEPT message is different from the corresponding stored mapped value, the UE shall perform a local release of the MA PDU session, perform the registration procedure for mobility and periodic registration update with a REGISTRATION REQUEST message including the PDU session status IE over non-3GPP access, and perform the tracking area updating procedure as specified in clause 5.5.3.2.2 of 3GPP TS 24.301 [15] with a TRACKING AREA UPDATE REQUEST message including EPS bearer context status IE.

f） 对于具有PDN连接作为用户平面资源的MA PDU会话，在通过非3GPP接入接收到PDU会话建立接受消息时，如果PDU会话确立接受消息中所选PDU会话类型、所选SSC模式、5GSM原因、PDU地址、S-NSSAI、DNN IE的任何值与相应存储的映射值不同，UE应执行MA PDU会话的本地释放、使用包括非3GPP接入上的PDU会话状态IE的注册请求消息执行移动性和定期注册更新的注册过程，并使用包括EPS承载上下文状态IE的跟踪区域更新请求消息执行3GPP TS 24.301[15]第5.5.3.2.2节中规定的跟踪区域升级过程。

g)    Collision of UE-requested PDU session establishment procedure initiated to perform handover of an existing PDU session from non-3GPP access to 3GPP access and a notification from the network with access type indicating non-3GPP access.
g） 发起UE请求的PDU会话建立过程以执行现有PDU会话从非3GPP接入到3GPP访问的切换，和来自网络的接入类型指示非3GPP接入的通知之间的冲突。
    If the UE receives a notification from the network with access type indicating non-3GPP access after sending a PDU SESSION ESTABLISHMENT REQUEST message to perform handover of an existing PDU session from non-3GPP access to 3GPP access, the UE shall abort the PDU session establishment procedure, stop timer T3580, proceed with the service request procedure to perform handover of existing PDU session(s) from non-3GPP access to 3GPP access.
   如果UE在发送PDU会话建立请求消息以执行现有PDU会话从非3GPP接入到3GPP接入的切换之后从网络接收到具有指示非3GPP接入的接入类型的通知，继续服务请求过程以执行现有PDU会话从非3GPP接入到3GPP接入的切换。

h)    Collision of UE-requested PDU session establishment procedure and N1 NAS signalling connection release
h） UE请求的PDU会话建立过程和N1 NAS信令连接释放的冲突
    The UE may immediately retransmit the PDU SESSION ESTABLISHMENT REQUEST message and stop, reset and restart timer T3580, if the following conditions apply:
    如果以下条件适用，则UE可以立即重传PDU会话建立请求消息并停止、重置和重新启动定时器T3580：
1)    The original UE-requested PDU session establishment procedure was initiated over an existing N1 NAS signalling connection;
1） 原始UE请求的PDU会话建立过程是通过现有的N1 NAS信令连接发起的；
2)    the previous transmission of the PDU SESSION ESTABLISHMENT REQUEST message was not initiated due to timer T3580 expiry; and
2） 由于定时器T3580到期，PDU会话建立请求消息的先前传输未启动；和
3)    no 5GSM message related to the PDU session (e.g. PDU SESSION ESTABLISHMENT REJECT or PDU SESSION AUTHENTICATION COMMAND message) or indication that the 5GSM message was not forwarded (see item b) and b1)) was received after the PDU SESSION ESTABLISHMENT REQUEST message was transmitted.
3） 在发送PDU会话建立请求消息之后，未接收到与PDU会话相关的5GSM消息（例如，PDU会话确立拒绝或PDU会话认证命令消息）或未转发5GSM信息的指示（参见项b）和b1））。
i)    Collision of UE-requested PDU session establishment procedure and network-requested PDU session modification procedure
i） UE请求的PDU会话建立过程和网络请求的PDU会话修改过程的冲突
    If the UE receives a PDU SESSION MODIFICATION COMMAND message after sending a PDU SESSION ESTABLISHMENT REQUEST message to the network, and the PDU session ID in the PDU SESSION MODIFICATION COMMAND message is the same as the PDU session ID in the PDU SESSION ESTABLISHMENT REQUEST message:
    如果UE在向网络发送PDU会话建立请求消息之后接收到PDU会话修改命令消息，并且PDU会话更改命令消息中的PDU会话ID与PDU会话确立请求消息中的PDU会话ID相同：
i)    if the UE-requested PDU session establishment procedure was to request the establishment of user plane resources on the second access for an MA PDU session established on a first access, the UE shall proceed with both the UE-requested PDU session establishment procedure and the network-requested PDU session modification procedure; or
i） 如果UE请求的PDU会话建立过程是为了在第一次接入上建立的MA PDU会话请求在第二次接入上的用户面资源的建立，则UE应继续进行UE请求PDU会话的建立过程和网络请求PDU的会话修改过程；或

ii)    if the PDU SESSION ESTABLISHMENT REQUEST message was sent with request type set to "existing PDU session" or "existing emergency PDU session" in order to perform a handover of an existing PDU session between 3GPP access and non-3GPP access, the UE shall proceed with the UE-requested PDU session establishment procedure and abort the network-requested PDU session modification procedure.
ii）如果发送PDU会话建立请求消息时请求类型设置为“现有PDU会话”或“现有紧急PDU会话”，以便在3GPP接入和非3GPP接入之间执行现有PDU对话的切换，则UE应继续执行UE请求的PDU会话建立过程并中止网络请求的PDUsession修改过程。