Adaptive retransmission with biased moving average retransmission times

A network transfer method for sending network packets while quickly adjusting to network conditions and avoiding spurious retransmissions comprising:

• determining, by a network endpoint, a biased moving average retransmission time based on a moving average metric and a packet delivery time of a most recent packet;
• triggering a fast timeout event based on an amount of time that has elapsed since an oldest unacknowledged packet being longer than the biased moving average retransmission time multiplied by a first predetermined amount;
• triggering a regular timeout event based on the amount of time that has elapsed since the oldest unacknowledged packet being longer than the biased moving average retransmission time multiplied by a second predetermined amount;
• and
• resuming, by the network endpoint, normal packet transmission in response to retransmitting previously unacknowledged packets during the fast timeout event and the regular timeout event.

A system comprising:

• at least one processor;
• memory in electronic communication with the at least one processor;
• and
• instructions stored in memory, the instructions being executable by the at least one processor to:
• determine a biased moving average retransmission time based on a moving average metric, a packet delivery time of a most recent packet, and a high constant or a low constant selected based on a comparison of the moving average metric and the packet delivery time of the most recent packet;
• trigger a fast timeout event based on an amount of time that has elapsed since an oldest unacknowledged packet was sent exceeding the biased moving average retransmission time multiplied by a first predetermined amount;
• and
• during the fast timeout event:
• retransmit the oldest unacknowledged packet;
• receive an acknowledgment of the oldest unacknowledged packet;
• and
• retransmit a next-oldest unacknowledged packet.