Networked Virtual Environments (NVE) is one of the main research areas which combines Virtual Reality (VR) with networking technology.Awareness is becoming the bottleneck of NVE systems.

• 网络虚拟环境是虚拟现实技术与网络应用相结合的重要研究领域之一，而感知问题已经成为网络虚拟环境的瓶颈。