Patent ID: 8493936

Claim:
A method for handover between User Equipments (UEs) in a process of sending a message, comprising: receiving, by a home server of a before-handover UE, a UE handover request sent by the before-handover UE, wherein the UE handover request carries an identifier of an after-handover UE, an identifier of the before-handover UE, an identifier of an message sending UE, and indication parameters for sending a message, wherein a message sending mode indicated in the indication parameters for sending the message is a successively sending mode, message sending directions indicated in the indication parameters for sending the message comprise a direction of sending a message from the before-handover UE to a home server of the before-handover UE and a direction of sending a message from a message sending UE to the home server of the before-handover UE; a message sending range indicated in the indication parameters for sending the message comprises a range of messages sent from the before-handover UE to the home server of the before-handover UE and a range of messages sent from the message sending UE to the home server of the before-handover UE; and creating, by the home server of the before-handover UE, a message sending session path between the home server of the before-handover UE and the message sending UE, the before-handover UE, and the after-handover UE each according to the identifier of the message sending UE, the identifier of the before-handover UE, the identifier of the after-handover UE, and the indication parameters for sending the message; receiving, by the home server of the before-handover UE, a first message sent by the message sending UE through the message sending session path between the home server of the before-handover UE and the message sending UE, wherein the first message carries a first message identifier parameter and a first message range parameter; receiving, by the home server of the before-handover UE, a second message sent by the before-handover UE through the message sending session path between the home server of the before-handover UE and the before-handover UE, wherein the second message carries a second message identifier parameter and a second message range parameter; the home server of the before-handover UE combining, by the home server of the before-handover UE, the messages received from the before-handover UE and the message sending UE to generate a complete message according to the first message identifier parameter, the first message range parameter, the second message identifier parameter, and the second message range parameter; and sending, by the home server of the before-handover UE, the combined message to the after-handover UE through the message sending session path between the home server of the before-handover UE and the after-handover UE.