draft-irtf-iccrg-ledbat-plus-plus
LEDBAT++: Congestion Control for Background Traffic
This memo describes LEDBAT++, a set of enhancements to the LEDBAT
(Low Extra Delay Background Transport) congestion control algorithm
for background traffic. The LEDBAT congestion control algorithm has
several shortcomings that prevent it from working effectively in
practice. LEDBAT++ extends LEDBAT by adding a set of improvements,
including reduced congestion window gain, modified slow-start,
multiplicative decrease and periodic slowdowns. This set of
improvement mitigates the known issues with the LEDBAT algorithm,
such as latency drift, latecomer advantage and inter-LEDBAT fairness.
LEDBAT++ has been implemented as a TCP congestion control algorithm
in the Windows operating system. LEDBAT++ has been deployed in
production at scale on a variety of networks and been experimentally
verified to achieve the original stated goals of LEDBAT. This
document is a product of the Internet Congestion Control Research
Group (ICCRG) of the Internet Research Task Force (IRTF).