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首页> 外文期刊>Multimedia, IEEE Transactions on >A Lightweight SCTP for Partially Reliable Overlay Video Multicast Service for Mobile Terminals
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A Lightweight SCTP for Partially Reliable Overlay Video Multicast Service for Mobile Terminals

机译：用于移动终端的部分可靠的重叠视频多播服务的轻量级SCTP

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摘要

In this article, a video multicast protocol for multi-homed mobile terminals is proposed as an alternative stream control transmission protocol (SCTP) for partially reliable multicast services. It works with overlay peer-to-peer video multicast facility in the application layer. For a multi-homed mobile terminal, an error burst may occur when a handover is in process in the primary path switching procedure. The key issue concerned in this protocol is the ability to predict packet loss and to retransmit the lost packets as soon as a mobile terminal completes its primary path switching procedure. This property controls the delay sensitivity of transmissions. Conversely, the protocol can tolerate partial loss in video transmission as long as the loss is limited to a relatively short error burst. In addition, it reduces the message overhead significantly and provides a scalable communication mechanism for multicast applications. The performance improvement of the proposed protocol comes from 1) the estimation of temporal velocity of mobile terminals with lost packet prediction in a long error burst, and 2) the requirement for each mobile terminal to indicate which packets can be safely discarded from its agent.
机译：在本文中，提出了用于多归属移动终端的视频多播协议，作为用于部分可靠的多播服务的替代流控制传输协议（SCTP）。它与应用程序层中的覆盖对等视频多播功能一起使用。对于多归属移动终端，当在主要路径切换过程中进行切换时，可能会发生错误突发。该协议中涉及的关键问题是一旦移动终端完成其主要路径切换过程，就能够预测分组丢失并重新发送丢失的分组的能力。此属性控制传输的延迟敏感性。相反，该协议可以忍受视频传输中的部分丢失，只要该丢失限于相对较短的错误突发即可。此外，它显着减少了消息开销，并为多播应用程序提供了可伸缩的通信机制。所提出协议的性能改进来自于1）在长错误突发中具有丢失分组预测的移动终端的时间速度估计，以及2）每个移动终端需要指示哪些分组可以从其代理中安全丢弃的要求。

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