combined attach cause #18 (CS domain not available)
cs/ps mode 2,在关机或拔卡前EPS only attach
combined TA cause #18 (CS domain not available)
cs/ps mode 2,在关机或拔卡前EPS only attach
#18 (CS domain not available)
The UE shall stop timer T3410 if still running, shall reset the tracking area updating attempt counter, shall set the EPS update status to EU1 UPDATED and shall enter state EMM-REGISTERED.NORMAL-SERVICE.
The UE shall set the update status to U2 NOT UPDATED.
A UE in CS/PS mode 1 of operation with "IMS voice not available" shall attempt to select GERAN or UTRAN radio access technology rather than E-UTRAN for the selected PLMN or equivalent PLMN. The UE shall disable the E-UTRA capability (see subclause 4.5). If the UE is in the EMM-CONNECTED mode, the UE shall locally release the established NAS signalling connection and enter the EMM-IDLE mode before selecting GERAN or UTRAN radio access technology.
A UE in CS/PS mode 2 of operation may provide a notification to the user or the upper layers that the CS domain is not available.
The UE shall not attempt combined attach or combined tracking area update procedure with current PLMN until switching off the UE or the UICC containing the USIM is removed. Other EMM cause values and the case that no EMM cause IE was received are considered as abnormal cases. The combined attach procedure shall be considered as failed for EPS and non-EPS services. The behaviour of the UE in those cases is specified in subclause 5.5.1.3.6.
甚至在出现如下错误时,部分不符合协议的终端依然反复发TAU,所以协议是一回事情,真正实现起来又是一回事情
#40 (No EPS bearer context activated);
The UE shall delete the list of equivalent PLMNs and deactivate all the EPS bearer contexts locally, if any, and shall enter the state EMM-DEREGISTERED.NORMAL-SERVICE. The UE shall then perform the attach procedure. 作者: wenliu 时间: 2013-9-5 09:25:58