request reception unit 83 is adapted to receive a resource release request initiated by the source side core network node after the resource release message reception unit 82 receives the resource release message a resource release unit 84 is adapted to perform a resource release with the source side core network node based on the resource release request received by the resource release request reception unit 83 in an embodiment of the invention the source side node starts releasing the resource after receiving the resource release message specifically the source side core network node transmits the resource release request to the source side access network node and the source side access network node release the resource based on the request fig9 is a structural diagram of a direct handover device according to further another embodiment of the invention the device includes following units a handover request message reception unit 91 is adapted to receive a handover request message transmitted by a target side core network node the handover request message includes identification information allocated for ue by a source side core network node in an embodiment of the invention the handover request message reception unit 91 receives the handover request message transmitted by the target side core network node where the handover request message includes the identification information allocated for the ue by the source side core network node a context information acquisition unit 92 is adapted to acquire context information.