A type of PEP defined in 2006 specifically for satellite communications, commonly pronounces “skips.” An open-source, TCP variant, SCPS is an extension to TCP to support high-speed and keep up bandwidth efficiencies during high round-trip times, channel asymmetry, packet loss, and other environmental impacts on satellite communications. In addition to use in the WAN, SCPS also enhances performance in terrestrial wireless environments which experience performance issues due to the environment interfering with their transmissions.
SCPS-TP (TP=Transport Protocol) is the only specification in the suite of space protocols in use today. The other protocols defined are SCPS-SP security layer, SCPS-FP file transfer, and SCPS-NP network protocol).
Read the Space Communications Protocol Standard document for more details.