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首页> 外文会议>Broadband Multimedia Systems and Broadcasting, 2009. BMSB '09 >A novel adaptive multimedia delivery algorithm for increasing user quality of experience during wireless and mobile e-learning
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A novel adaptive multimedia delivery algorithm for increasing user quality of experience during wireless and mobile e-learning

机译：一种新颖的自适应多媒体交付算法，可提高用户在无线和移动电子学习过程中的体验质量

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摘要

Multimedia content is distributed via all types of networks to viewers found in a variety of locations and using different types of devices. Increasing the performance of multimedia stream delivery requires overcoming many technological challenges, all of them having a direct effect on the user perceived quality of experience. The quality of experience influences in turn the quality of any e-learning process. This is as users in general and learners in particular are becoming increasingly quality-aware in their expectations. Therefore delivering a good quality video stream as a part of any e-learning process is very important. This paper proposes a new adaptive multimedia delivery algorithm which can be used in the context of e-learning. The Dynamic Quality Oriented Adaptation Scheme (D-QOAS) adapts the multimedia content sent based on both user preferences and network conditions, while adjusting dynamically its adaptation policy during delivery. Simulation results show that for different user profiles and various network conditions the improvement in end-user perceived quality is significant. Important benefits are obtained in terms of the total number of simultaneous users and in the link utilization, as well as in quality as measured by some video quality metrics.
机译：多媒体内容通过所有类型的网络分发给在不同位置和使用不同类型设备的观众。提高多媒体流传输的性能需要克服许多技术挑战，所有这些挑战都直接影响用户感知的体验质量。体验的质量反过来会影响任何电子学习过程的质量。就像一般的用户，尤其是学习者的期望值越来越高一样。因此，在任何电子学习过程中提供高质量的视频流非常重要。本文提出了一种新的自适应多媒体交付算法，可以在电子学习的背景下使用。面向动态质量的适应方案（D-QOAS）基于用户的喜好和网络条件来适应发送的多媒体内容，同时在交付过程中动态调整其适应策略。仿真结果表明，对于不同的用户配置文件和各种网络条件，最终用户感知质量的改善是显着的。从同时使用的用户总数，链接利用率以及通过某些视频质量指标测得的质量方面，都可以获得重要的好处。

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