Method and system for recovering from hand-off fail for use in cdma 2000 1xev-do system

A multimedia mobile communication system for recovering an EV-DO system from hand-off fail, the multimedia mobile communication system comprising:

• a hybrid access terminal making communication with the EV-DO system and a 1× system in order to transmit/receive voice signals or data, transmitting a route update signal to the EV-DO system while a multimedia service is being transmitted thereto from the EV-DO system, and performing a hand-off by transmitting a hand-off response signal to the EV-DO system when a hand-off signal is transmitted thereto from the EV-DO system;
• a 1× for transmitting/receiving a voice signal or data to/from the hybrid access terminal;
• a 1× controller for controlling a transmission service of the 1× transceiver;
• a mobile switching center for providing a communication access route of the 1× system with respect to a communication call from the hybrid access terminal by switching the communication access route;
• an EV-DO access network transceiver subsystem for transmitting/receiving packet data to/from the hybrid access terminal;
• an EV-DO access network controller controlling a packet data transmission service of the EV-DO access network transceiver subsystem, receiving the route update signal from the hybrid access terminal while the multimedia service is being transmitted to the hybrid access terminal from the EV-DO access network transceiver subsystem, transmitting a traffic channel assignment signal to the hybrid access terminal in response to the route update signal, and re-transmitting the traffic channel assignment signal to the hybrid access terminal if a response signal(L2ACK) is not transmitted thereto from the hybrid access terminal, thereby performing the hand-off;
• and
• a packet data serving node connected to the EV-DO access network controller so as to transmit/receive the packet data to/from the EV-DO system.