Patent ID: 7515572
Filing Date: 2009-04-07
Classification: H04W

Abstract:
1. A data transfer method using a communications network that comprises, at least, a mobile node, a corresponding node that distributes data to the mobile node, and a relay node that relays data transfer between the mobile node and the corresponding node, the data transfer method comprising: a requesting step of requesting, by the mobile node, the relay node to initiate buffering data that is transmitted from the corresponding node; a buffering step of buffering, at the relay node, data that is transmitted from the corresponding node and addressed to the mobile node using an address for buffering that is generated by the relay node based on a home address of the mobile node, said address for buffering being generated by the relay node separately from an address used for data transmission; a buffer data request step of requesting, by the mobile node, the relay node to transmit the buffered data to the mobile node; and a buffer data transmission step of transmitting, by the relay node, the buffered data to the mobile node.