Abstract: Stream Control Transmission Protocol（SCTP） is a message-oriented，reliable transport protocol operating on top of a potentially unreliable connectionless packet service such as IP.It is characterized by multi-homing and multi-streaming.In this paper，we designed and conducted a series of simulation experiments to demonstrate that SCTP may provide significantly advantageous over the traditional TCP and UDP in real-time multimedia applications，in terms of delivery ratio，bandwidth cost，end-to-end delay，jitter，etc.On this basis，we explored a new strategy used to deliver video for streaming media applications with higher quality.

Key words: Stream Control Transmission Protocol（SCTP）, media streaming, performance analysis

摘要： SCTP协议（Stream Control Transmission Protocol）是一种面向报文的、可靠的传输层协议。它基于不可靠的、无连接的分组IP网络，具有多宿（multi-homing）和多流（multi-streaming）等特性。通过仿真的方法分析，证实SCTP在支持实时多媒体网络应用时的许多性能参数明显优于传统的TCP和UDP，包括数据包投递率、带宽开销、端到端延迟、延迟抖动等。在此基础上，探讨一个适合在流媒体应用中，能够有效提高流媒体传输质量的策略。

关键词: 流传输控制协议, 流媒体, 性能分析