Collaborative Research: CSR-EHS: System Research on Media Streaming to Heterogeneous Mobile Devices

合作研究：CSR-EHS：异构移动设备媒体流系统研究

• 批准号: 0621629
• 负责人: Xiaodong Zhang
• 金额: --
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-15 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0621629&HistoricalAwards=false
• 关键词: Collaborative; Research; CSR; EHS; System

The advancement of wireless technology has enabled Internet users to access all kinds of Internet services via their mobile devices. However, with the dramatic increase of Internet streaming media content, the existing Internet lacks sufficient support for efficient streaming delivery to heterogeneous mobile devices. This is due to the resource constraints at both the sender side and the receiver side.In this project, effective and fundamental computing techniques are being developed and implemented to address these limits, spanning from the system level to the application level. A new system model is being constructed for streaming media sources in order to guide the design of efficient transcoding algorithms. The objective is to greatly reduce demand for CPU cycles and storage size through real-time transcoding. With these new transcoding algorithms, the capacity and throughput of the streaming delivery system are expected to significantly improve. Furthermore, through the analysis of the power consumption for a mobile device at the data receiving, decoding, and displaying stages, a comprehensive optimization model is being developed for efficient management of power consumption in mobile devices. Power-saving mechanisms developed in the project are expected to substantially prolong battery lifetime for mobile devices. Transcoding-friendly and power-aware schemes are being tailored and evaluated to support mobile Internet access. These schemes will not only support widespread mobile access to Internet applications, but also further conserve power at mobile devices.The techniques to be developed in this project are expected to remove barriers that inhibit Internet streaming to mobile devices and make it significantly more efficient and pervasive.

无线技术的进步使互联网用户可以通过移动设备访问各种互联网服务。然而，随着互联网流媒体内容的急剧增加，现有互联网缺乏足够的支持，无法高效地向异构移动设备传输流媒体。这是由于发送端和接收端都存在资源限制。在这个项目中，正在开发和实施有效和基本的计算技术，以解决从系统级到应用级的这些限制。为了指导高效转码算法的设计，本文构建了一种新的流媒体源系统模型。目标是通过实时转码大大减少对CPU周期和存储大小的需求。有了这些新的转码算法，流传输系统的容量和吞吐量有望显著提高。此外，通过对移动设备在数据接收、解码和显示阶段的功耗分析，建立了一个全面的优化模型，以实现移动设备功耗的有效管理。该项目开发的节电机制有望大大延长移动设备的电池寿命。正在为支持移动互联网接入量身定制和评估对转码友好和功率敏感的方案。这些方案不仅支持互联网应用的广泛移动接入，而且还进一步节省移动设备的电力。在这个项目中开发的技术有望消除阻碍互联网流到移动设备的障碍，使其显著提高效率和普及程度。