Patent ID: 6587985
Filing Date: 2003-07-01
Classification: H04L

Abstract:
A data transmission method for performing continuous data transmission from a transmitting end to a receiving end in units of packets, each packet having additional information relating to its sequence number, priority, and data reproduction time at the receiving end, while performing retransmission of the packets in response to a retransmission request from the receiving end, said method comprising:at the transmitting end, giving priority information to each packet to be transmitted; and at the receiving end, when a transmission error is detected, detecting the priority information of an error packet; when the detected priority is equal to or higher than a predetermined value, outputting a retransmission request for the error packet to the transmitting end by indicating the sequence number of the error packet; and at the transmitting end, retransmitting the data of the packet to the receiving end, the packet having the sequence number which is indicated by the retransmission request from the receiving end.