| 摘要 |
<p>Provided are apparatus and method for measuring a round trip delay time of variable bit rate multimedia data, in which when a real-time transport control protocol (RTCP) receiver report (RR) packet is received from a receiving side, an instant round trip delay time is calculated using a corresponding field value of the receiver report packet, a current moving average round trip delay time is estimated using the calculated instant round trip delay time and a moving average round trip delay time of a previous time, and an effective transmission rate is updated using the measured current moving average round trip delay time. Therefore, the effective transmission rate is estimates so as to gradually react even to a great instantaneous change of a network, and accordingly deterioration of the multimedia reception quality caused by a drastic change of transmission quantity of multimedia data can be prevented.</p> |
