Beyond audio and video: multimedia networking support for distributed, immersive virtual environments
Beyond audio and video: multimedia networking support for distributed, immersive virtual environments
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超越音频和视频：分布式、沉浸式虚拟环境的多媒体网络支持
DOI：
10.1109/eurmic.2001.952468
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
Mark Parris
中科院分区：
文献类型：
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作者：
K. Jeffay;T. Hudson;Mark Parris
与交互式音频/视频应用程序一样，分布式虚拟环境(DVE)需要持续、低延迟的媒体交付。虽然已经开发了终端系统媒体适配和基于网络的转发服务来支持音频/视频应用，但这些机制是否可以直接应用或调整以实现DVE的要求仍然是一个悬而未决的问题。我们介绍了一项关于使用音频/视频媒体适配和基于路由器的主动队列管理(AQM)来支持UNC NanManipator-扫描探针显微镜的DVE接口产生的数据流的研究结果。我们提出了一种用于支持NanManipator中的触觉力反馈跟踪/指向设备的延迟抖动管理方案和一种基于路由器缓冲区分配的AQM方案以减少丢包。早期实验的结果是有希望的，并提供了证据，表明复杂的虚拟环境界面可以在互联网上操作，以实时控制远程显微镜。
Like interactive audio/video applications, distributed virtual environments (DVEs) require continuous, low-latency delivery of media. While end-system media adaptations and network-based forwarding services have been developed to support audio/video applications, it remains an open question whether these mechanisms can be either directly applied or adapted to realize the requirements of DVEs. We present the results of a study on the use of audio/video media adaptations and router-based active queue managements (AQM) to support the data-flows generated by the UNC nanoManipulator-a DVE interface to a scanned-probe microscope. We present a delay-jitter management scheme used to support a haptic force-feedback tracking/pointing device used in the nanoManipulator and an AQM scheme based on buffer allocation in routers to reduce packet loss. The results of early experiments are promising and provide evidence that a sophisticated virtual environment interface can operate over the Internet to control a remote microscope in real-time.