Video telephony service quality enhancement method and apparatus

A terminal of a wireless communication system, the terminal comprising:

• a transceiver configured to transmit and receive a signal;
• and
• a control unit coupled with the transceiver and configured to:
• control the transceiver to transmit a call setup request message including information requesting circuit switched fall back (CSFB) for a video call to a mobility management entity (MME) of a first access network,
• control the transceiver to receive configuration information on a measurement for a second access network and a third access network from a base station of the first access network,
• control the transceiver to transmit, if a first measurement for the second access network and a second measurement for the third access network are performed, a measurement report message including a first measurement result for the second access network based on the configuration information, and not including a second measurement result for the third access network to the base station of the first access network,
• control the transceiver to receive command information on the CSFB based on the first measurement result from the base station of the first access network,
• switch to a cell of the second access network based on the command information, and
• perform a call setup procedure in the second access network.