Improving Performance of SCTP over Broadband High Latency Networks

Stream Control Transmission Protocol (SCTP) is newly emerged protocol, which combined good qualities of TCP and UDP. It is a reliable message oriented protocol providing Multistreaming and Multihoming as well. The congestion control scheme of SCTP is more or less similar to that of TCP with the exception of the Fast Recovery algorithm. The performance of SCTP over the Internet and satellite links is improved as compared with TCP. However, the congestion control scheme of SCTP over high latency broadband networks needs further refinement in case of multiple packet losses on a link. We propose a new congestion control for SCTP and proved that performance of SCTP has significantly improved.