基于流媒体的分层组播SIP协议研究

Research on hierarchical multicast SIP protocol for streaming multimedia

文章首先简要介绍了远程加入与双向隧道机制,并在现有移动组播技术不足的基础上,围绕切换延时和带宽消耗等问题提出了一种动态分层组播SIP协议—DHMSIP。通过分析对比表明,DHMSIP在切换延时、可靠性和带宽消耗上具有很大优势,而且它还可以有效地减少运营成本,并能为移动节点提供快速切换来保证多媒体的QoS。

This article first briefly introduces Remote Subscription and Bi-directional Tunneling mechanisms, and then basing on the shorts of the existing mobile multicast technique, according to the handoff delay and bandwidth consumption problems, this article proposes a dynamic hierarchical multicast session initiation protocol DHMSIP. By comparison and analysis, it indicates that DHMSIP has great advantages on handoff delays, reliability and bandwidth consumption, and that it may effectively reduce deployment cost, and support fast handoff for mobile nodes with guaranteed multimedia QoS.