Congestion-resilient TCP

XOR packets;Transmission Control Protocol (TCP);network congestion;congestion resilience;network protocol enhancement;forward error correction;exclusive-or (XOR);packet loss;network reliability

Winterrowd, Lenhard ; Nicol ; David M.

关键词: XOR packets;    Transmission Control Protocol (TCP);    network congestion;    congestion resilience;    network protocol enhancement;    forward error correction;    exclusive-or (XOR);    packet loss;    network reliability;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/44164/Lenhard_Winterrowd.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

In response to the advent of publicly-accessible high bandwidth links, we explore a potential resiliency enhancement to TCP that makes use of extra bandwidth to do forward error correction using the exclusive-or binary operation. We implement this XOR-Packets enhancement in the FreeBSD network stack and show that it guarantees the ability to reconstruct any single packet loss without the need for retransmission. Furthermore, in the unlikely best case, up to a third of the TCP stream can be lost without the need for retransmissions. We test our scheme against FreeBSD's default NewReno implementation with and without Selective Acknowledgment and find that our enhancement's goodput scales better than both for large stream sizes in high network congestion conditions.