DCCP研究及其性能分析

DCCP Research and Analvsis of its Performance

1.介绍 随着Internet的迅猛发展,涌现了大量的实时应用,如RealAudio、网络电话、在线游戏等等.它们对网络协议提出了新的要求.这些应用的特点是延时、抖动敏感,而对于一定数量的分组丢失则不会影响其服务质量.如实时应用存在回放点(play off),晚于它到达客户端的数据将无任何意义.

This paper explores simulation results of the Datagram Congestion Control Protocol (DCCP). The Internet community has seen the growth of real-time applications, which by the nature of their data flow do not desire the congestion control semantics of TCP and are thus left to build their applications on top of UDP. However, such methods have left with applications writers developing their own congestion control mechanisms. With congestion control mechanisms built directly into the transport layer, DCCP provides ease of use for application writers, as well as a selection of standards for use by applications. We explore the advantages of DCCP using an AIMD congestion control mechanism. An initial implementaion and experimentation of DCCP and its TCP-like congestion control mechanism show its behaviors.