Methods and apparatus for multimedia data transmission quality measurement

Transmission quality measuring method of the multimedia data according to the present invention, the transmitter phase transmitter to the receiver receiving the phase multimedia data for multimedia data over the channel is sent to the transmitter over the channel feedback error information of the multimedia data transmission, the step of estimating the received data at the receiver using the error feedback information and the transmitter, by comparing the reference data and the estimated received data is characterized in that it comprises a step of evaluating the transmission quality of the received data. First, because it does not perform an assessment of the quality of the transmitted data at the receiver side, the transmitter does not have to transmit the parameter data for evaluation. Therefore, no additional bandwidth resources of the downlink channel is not consumed for the quality of the transmission data. Second, according to the quality evaluation result of the transmitted data at the transmitter side, it is possible by taking appropriate measures to change the current state of the transmission, improving the reliability of the multimedia data transmission.