Transcoding service method in vertical hand-off environment

摘要

The present invention communication channels caused by moving the domain zones in cellular and WLAN networks to the mobile communication terminal is also related to delays or transcoding service method of a streaming service available in vertical handoff environment without interruption when switching. ; The method includes WLAN and cellular networks are overlay vertical handoff environment , the mobile node is connected to a predetermined home network, and receiving the streaming data provided from the other node; Sensing whether or not a handoff occurs by comparing the intensity of the received signal of the two receiving the streaming service in the mobile network is an overlay node; If it is determined in the detection step into a handoff occurs, the mobile node forming a tunnel between the visited network and the home agent (HA) to set up a new connection with the visited network, and performs authentication and MIP registration process; If the tunnel between the visited network and the home agent (HA), such as the formation, comprising: a handoff notification to the fact that the other node (CN) in the mobile node; And the other node being notified that a handoff (CN) comprises a step to vary the bit rate stream data in service to meet the bandwidth of the visited network to a streaming service to the mobile node via the visited network.