Providing QoS for Networked Peers in Distributed Haptic Virtual Environments
Providing QoS for Networked Peers in Distributed Haptic Virtual Environments
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DOI：
10.1155/2008/841590
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发表时间：
2008-10
期刊：
影响因子：
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通讯作者：
A. Marshall;K. Yap;Wai Yu
中科院分区：
文献类型：
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作者：
A. Marshall;K. Yap;Wai Yu
触觉信息源自不同的人类感觉（触摸），因此支持触觉流量所需的服务质量（QoS）与用于支持传统实时流量（例如语音或视频）的服务质量显着不同。每种类型的网络损伤对用户的触觉体验都有不同（且严重）的影响。目前还没有针对触觉交互的 QoS 参数的具体规定。先前对分布式触觉虚拟环境（DHVE）的研究主要集中在位置（触觉设备或虚拟对象）的同步上，并且基于客户端-服务器架构。我们提出了一种新的点对点 DHVE 架构，该架构进一步扩展了这一点，以实现两个用户之间的强制交互，从而除了位置信息之外，还将强制数据发送到远程对等点。所提出的工作涉及模拟和实际实验，其中多模式数据通过支持 QoS 的 IP 网络传输。两种形式的实验都产生了一致的结果，表明对触觉流量使用特定的 QoS 类别将减少网络延迟和抖动，从而改善用户对这些类型的应用程序的触觉体验。
Haptic information originates from a different human sense (touch), therefore the quality of service (QoS) required to support haptic traffic is significantly different from that used to support conventional real-time traffic such as voice or video. Each type of network impairment has different (and severe) impacts on the user's haptic experience. There has been no specific provision of QoS parameters for haptic interaction. Previous research into distributed haptic virtual environments (DHVEs) have concentrated on synchronization of positions (haptic device or virtual objects), and are based on client-server architectures. We present a new peer-to-peer DHVE architecture that further extends this to enable force interactions between two users whereby force data are sent to the remote peer in addition to positional information. The work presented involves both simulation and practical experimentation where multimodal data is transmitted over a QoS-enabled IP network. Both forms of experiment produce consistent results which show that the use of specific QoS classes for haptic traffic will reduce network delay and jitter, leading to improvements in users' haptic experiences with these types of applications.