...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mobile Computing, IEEE Transactions on >Dynamic Control of Receiver Buffers in Mobile Video Streaming Systems
【24h】

Dynamic Control of Receiver Buffers in Mobile Video Streaming Systems

机译：移动视频流系统中接收器缓冲区的动态控制

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

We propose a novel algorithm to efficiently transmit multiple Variable-Bit-Rate (VBR) video streams from a base station to mobile receivers in wide-area wireless networks. The algorithm multicasts video streams in bursts to save the energy of mobile devices. In addition, the algorithm adaptively controls the buffer levels of mobile devices receiving different video streams according to the bit rate of the video stream being received by each device. Compared to previous algorithms, the new algorithm enables dynamic control of the wireless channel and allows the base station to transmit more video data on time to mobile receivers. This is done by providing finer control over the bandwidth allocation of the wireless channel. The problem of optimizing energy saving has been shown to be NP-Complete. We prove that our algorithm finds a feasible schedule if one exists and always produces a correct schedule even when dropped frames are unavoidable. We analytically bound the gap between the energy saving resulting from our algorithm and the optimal energy saving and show that our results are close to optimal. We analyze the tradeoff between the fine control over bandwidth allocation and energy saving and demonstrate that in practical situations, flexible and finer control of bandwidth allocation will result in significantly lower frame loss rates while achieving higher energy saving. We have implemented the proposed algorithm as well as two other recent algorithms in a mobile video streaming testbed. Our extensive analysis and results demonstrate that the proposed algorithm outperforms the other two algorithms; it results in higher energy saving for mobile devices and fewer dropped video frames.
机译：我们提出了一种新颖的算法，可以有效地将多个可变比特率（VBR）视频流从基站传输到广域无线网络中的移动接收器。该算法以突发方式多播视频流，以节省移动设备的能量。另外，该算法根据每个设备正在接收的视频流的比特率来自适应地控制接收不同视频流的移动设备的缓冲区级别。与以前的算法相比，新算法可以动态控制无线信道，并允许基站按时向移动接收机发送更多视频数据。这是通过对无线信道的带宽分配提供更好的控制来完成的。优化节能的问题已被证明是NP-Complete。我们证明了我们的算法找到了可行的时间表，即使存在不可避免的情况，并且总是产生正确的时间表，即使丢帧是不可避免的。我们分析性地限制了算法产生的节能与最佳节能之间的差距，并表明我们的结果接近最佳。我们分析了带宽分配的精细控制与节能之间的权衡，并证明了在实际情况下，灵活而精细的带宽分配控制将显着降低帧丢失率，同时实现更高的节能效果。我们已经在移动视频流测试平台中实现了建议的算法以及其他两个最新算法。我们的广泛分析和结果表明，该算法优于其他两种算法。这样可以为移动设备节省更多的能源，并减少掉落的视频帧。

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