1. A method of relocating a gateway, the method performed by a node, which is in charge of a control plane, for a user equipment (UE) in a mobile communication network, and the method comprising:receiving a tracking area update (TAU) request message from the UE while the UE performs a handover,
wherein the TAU request message comprises capability information indicating that both the UE and another party communicating with the UE have a capability to support a relocation of the gateway;
determining to relocate a gateway appropriate for the UE based on (i) the UE performing the handover and (ii) that both the UE and the other party communicating with the UE have the capability to support the relocation of the gateway; and
delivering a relocation indication to the UE on the basis of the determination.