https://www.ietf.org/archive/id/draft-ietf-core-fasor-02.html
Fast-Slow Retransmission Timeout and Congestion Control Algorithm for CoAP
This document specifies an alternative retransmission timeout (RTO) and congestion control back off algorithm for the CoAP protocol, called Fast-Slow RTO...
congestion control algorithmretransmission timeoutfastslowcoap