| 摘要 |
PURPOSE: A method for transmitting and receiving an ECN(Explicit Congestion Notification)-based multimedia stream is provided to transmit the multimedia stream by using an equivalent bandwidth modem-based transport protocol, and to use an ECN-marked packet rate to obtain a network equivalent bandwidth, thereby preventing packet loss from influencing on congestion notification. CONSTITUTION: A bit is added to inform a header complying with an IP of a transmitted data packet that congestion occurs while passing through a network, and the added bit is transmitted. A returning time of the data packet to which the bit is added is received from a receiving end(4) with a congestion action rate. A rate of data to be transmitted is calculated, based on the returning time and the congestion action rate. The data packet is transmitted at the calculated rate. When informing the header that the congestion occurs, a router(2) marks the bit. When calculating the congestion action rate, the bit counts the number of marked packets, and transmits the packets to the receiving end(4). |
