Patent ID: 8526361

Claim:
A mobile communication system comprising: a first node and a second node that are positioned between a core network and a mobile terminal; a first transmission path between the first node and the second node for transmitting user data without passing through the core network; and a second transmission path between the core network and the second node for transmitting user data to the second node via the core network, wherein the second node receives, from the first node, a request signal notifying that user data destined for the mobile terminal are to be transmitted through each of the first and second transmission paths, wherein the second node sends, after receiving the request signal from the first node, an acknowledge response to the first node, wherein the second node initiates, after receiving the request signal from the first node, modification of communication resources to receive and transmit the user data to be received through the first and second transmission path, wherein the first node sends, after receiving the acknowledge response from the second node, user data destined for the mobile terminal to the second node through the first transmission path, and wherein the second node receives user data destined for the mobile terminal through the first transmission path, and receives user data destined for the mobile terminal through the second transmission path.