Patent ID: 7570945
Filing Date: 2009-08-04
Classification: H04L,H04W

Abstract:
1. In a network system comprising a server for storing multimedia data, a plurality of wireless nodes for wired/wireless connection, a network for connecting the server to the plurality of wireless nodes and a mobile station for performing the wireless connection through at least one of said wireless nodes, a method for providing continuous data transfer when the mobile station is moved between different wireless zones covered by corresponding ones of the wireless nodes while data is sent from the server, the method comprising steps of: sensing that a connection between a first wireless node and the mobile station is cut off, while the first wireless node is receiving predetermined data from the server through the network and transferring the received predetermined data to the mobile station; when the connection with the mobile station is cut off, buffering, in the first wireless node, the predetermined data to be transferred to the mobile station at a time point of disconnection with the mobile station in a state in which the first wireless node maintains a connection with the server; establishing a connection between the mobile station and a second wireless node in the home network system, and receiving from the mobile station, a continuous-data-transfer request for the predetermined data; in response to the continuous-data-transfer request, searching, by the second wireless node, said plurality of wireless nodes for the first wireless node buffering the data, and establishing a connection with the first wireless node; and receiving, by the second wireless node, the buffered data from the first wireless node and transferring the received buffered data to the mobile station.