| 摘要 |
A mobile communication method according to the present invention includes the steps of: transmitting, from a NAS function to an S1-AP function, a NAS-PDU; transmitting, from the S1-AP function to the NAS function, a retransmission request for the NAS-PDU, when receiving a notification, which indicates completion of a handover of a mobile station (UE), from a handover target radio base station (eNB), after receiving an S1-AP response message, which indicates that transfer of the NAS-PDU to the mobile station (UE) through a radio interface has failed, from the handover source radio base station (eNB) ; and retransmitting, from the NAS function to the S1-AP function, the NAS-PDU, in response to the retransmission request. |
