Section: 5.4.5.4 Abnormal cases on the network side
Content: The following abnormal case can be identified: a) Lower layers indication of non-delivered NAS PDU due to handover If the EMM INFORMATION message could not be delivered due to an intra MME handover and the target TA is included in the TAI list, then upon successful completion of the intra MME handover the MME shall retransmit the EMM INFORMATION message. If a failure of the handover procedure is reported by the lower layer and the S1 signalling connection exists, the MME shall retransmit the EMM INFORMATION message.