Adaptation and Performance Evaluation of the TCP Cubic Algorithm in the DCCP Protocol
Abstract
The transmission of multimedia content in real time over the Internet has become a needed in applications such as voice over IP (VoIP), video conferencing, games and WebTV. The Internet transport protocols have a key role in this type of transmission, especially with the growth of using these applications in recent years. To support this evolution, new Internet transport protocols have been standardized by the IETF, such as the DCCP protocol (Datagram Congestion Control Protocol). This protocol allows the unicast transmission of datagrams and it provides a framework to add congestion control algorithms to the core protocol. However, according to recent studies conducted, the current algorithms for congestion control in DCCP, called CCIDs (Congestion Control IDentifiers), are outdated and provide low performance when compared to modern algorithms, such as TCP Cubic, Compound and Vegas. This paper presents a new CCID for the DCCP based on TCP Cubic and discusses the process of integration into the Linux kernel and its performance compared to other available CCIDs.
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