A mobile communication method of a mobile station handing over to a handover destination cell and a radio base station functioning as a handover source radio base station at the time of handover of the mobile station.

摘要

In a mobile communication method according to the present invention includes the steps of: transmitting, from a handover source radio base station to a swithcing center, a handover request including an NCC, a PCI and a K eNB *; changing, at the swithcing center, the NCC, changing, at the swithcing center, the K eNB * on the basis of the PCI, and transmitting, from the swithcing center to the handover target radio base station, the handover request including the changed NCC and the changed K eNB *; generating, at the handover target radio base station, a first key on the basis of the K eNB *; and generating, at the mobile station, the first key on the basis of the NCC and the PCI included in a handover command.