• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of digital multimedia broadcasting >QoS Supported IPTV Service Architecture over Hybrid-Tree-Based Explicit Routed Multicast Network
【24h】

QoS Supported IPTV Service Architecture over Hybrid-Tree-Based Explicit Routed Multicast Network

机译：基于混合树的显式路由组播网络上的QoS支持的IPTV服务架构

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

With the rapid advance in multimedia streaming and multicast transport technology, current IP multicast protocols, especially PIM-SM, become the major channel delivery mechanism for IPTV system over Internet. The goals for IPTV service are to provide two-way interactive services for viewers to select popular program channel with high quality for watching during fast channel surfing period. However, existing IP multicast protocol cannot meet above QoS requirements for IPTV applications between media server and subscribers. Therefore, we propose a cooperative scheme of hybrid-tree based on explicit routed multicast, called as HT-ERM to combine the advantages of shared tree and source tree for QoS-supported IPTV service. To increase network utilization, the constrained shortest path first (CSPF) routing algorithm is designed for construction of hybrid tree to deliver the high-quality video stream over watching channel and standard quality over surfing channel. Furthermore, the Resource Reservation Protocol-Traffic Engineering (RSVP-TE) is used as signaling mechanism to set up QoS path for multicast channel admission control. Our simulation results demonstrated that the proposed HT-ERM scheme outperforms other multicast QoS-based delivery scheme in terms of channel switching delay, resource utilization, and blocking ratio for IPTV service.
机译：随着多媒体流和组播传输技术的飞速发展，当前的IP组播协议，尤其是PIM-SM，已经成为IPTV系统通过Internet的主要频道传输机制。 IPTV服务的目标是为观众提供双向交互服务，以便他们在快速频道浏览期间选择高质量的受欢迎节目频道进行观看。但是，现有的IP多播协议不能满足媒体服务器和订户之间IPTV应用程序的上述QoS要求。因此，我们提出了一种基于显式路由组播的混合树协作方案，称为HT-ERM，以结合共享树和源树的优势来支持QoS支持的IPTV服务。为了提高网络利用率，针对混合树的构建设计了约束最短路径优先（CSPF）路由算法，以在观看频道上提供高质量的视频流，在冲浪频道上提供标准的质量。此外，资源预留协议流量工程（RSVP-TE）被用作信令机制，以建立用于多播信道准入控制的QoS路径。我们的仿真结果表明，在IPTV服务的信道切换延迟，资源利用率和阻塞率方面，所提出的HT-ERM方案优于其他基于多播QoS的交付方案。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号