• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of visual communication & image representation >Multi-path content delivery: Efficiency analysis and optimization algorithms
【24h】

Multi-path content delivery: Efficiency analysis and optimization algorithms

机译：多路径内容交付：效率分析和优化算法

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

The paper studies the benefits of multi-path content delivery from a rate-distortion efficiency perspective. We develop an optimization framework for computing transmission schedules for streaming media packets over multiple network paths that maximize the end-to-end video quality, for the given bandwidth resources. We comprehensively address the two prospective scenarios of content delivery with packet path diversity. In the context of sender-driven systems, our framework enables the sender to compute at every transmission instance the mapping of packets to network paths that meets a rate constraint while minimizing the end-to-end distortion. In receiver-driven multi-path streaming, our framework enables the client to dynamically decide which packets, if any, to request for transmission and from which media servers, such that the end-to-end distortion is minimized for a given transmission rate constraint. Via simulation experiments, we carefully examine the performance of the scheduling framework in both multi-path delivery scenarios. We demonstrate that the optimization framework closely approaches the performance of an ideal streaming system working at channel capacity with an infinite play-out delay. We also show that the optimization leads to substantial gains in rate-distortion performance over a conventional content-agnostic scheduler. Through the concept of error-cost performance for streaming a single packet, we provide another useful insight into the operation of the optimization framework and the conventional scheduling system.
机译：本文从速率失真效率的角度研究了多路径内容交付的好处。我们开发了一种优化框架，用于计算在多个网络路径上流式媒体数据包的传输调度，从而针对给定的带宽资源最大化端到端视频质量。我们全面介绍了两种具有包路径多样性的内容交付的预期方案。在发送方驱动的系统中，我们的框架使发送方能够在每个传输实例中计算数据包到满足速率限制的网络路径的映射，同时将端到端的失真降至最低。在接收方驱动的多路径流传输中，我们的框架使客户端能够动态决定要请求传输的数据包以及从哪个媒体服务器请求数据包，从而在给定的传输速率约束下将端到端失真最小化。通过仿真实验，我们仔细检查了两种多路径交付方案中调度框架的性能。我们证明，优化框架非常接近理想的流系统的性能，该系统在具有无限播放延迟的信道容量下工作。我们还表明，与常规的内容无关的调度程序相比，优化导致速率失真性能的大幅提高。通过流传输单个数据包的错误成本性能的概念，我们提供了对优化框架和常规调度系统的操作的另一有用见解。

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