Context-aware quality of service provisioning for real-time multimedia communications

人们对连续媒体（音频/视频）服务，即基于IP的流媒体和多媒体会议的兴趣日益增加，加上无线和流动网络的技术进步，为提供服务质量带来了新的挑战和机遇。例如，数以百万计的在线用户通过各种方式连接到互联网，包括高速连接（电缆或ADSL）、调制解调器或无线连接，观看一些体育赛事。容纳如此大量的连续媒体用户、网络连接的异构性以及多媒体应用程序的不同QoS需求代表着重大挑战。

The growing interest in continuous media (audio/video) services, namely media streaming and multimedia conferencing over IP, coupled with technological advances in wireless and mobile networking, present new challenges and opportunities for Quality of Service (QoS) provisioning. For example, some sports events are watched by millions of online users connected to the Internet in a variety of ways including high speed connections (Cable or ADSL), modems, or wireless connections. Accommodating such large number of continuous media users, network connection heterogeneity, and the different QoS requirements for multimedia applications represents significant challenges.