SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING DATA FRAMES IN A NAK-BASED WINDOW PROTOCOL

摘要

In a NAK-based window transmission protocol where the transmitter retains transmitted data frames in a retransmission queue, one or more transmitted data frames are discarded as the number of data frames approaches the available queue capacity. A message, such as a control frame, is transmitted to the receiver indicating which of the retained data frame copies were discarded. The queue stall avoidance mechanism operates at the transmitter, which has direct knowledge of its queue utilization. By avoiding a queue stall, the transmitter may continue to receive incoming data packets for transmission to a receiver. That is, the transmitter can be configured to prioritize sending new data over retaining previously transmitted data for support of data retransmissions.