关键词: 计算机支持的协同工作, 协同虚拟环境, 同步, 交互, 数据过滤

Abstract: In order to deal with increasing demand from scale and interaction in Collaborative Virtual Environments (CVEs), a data filtering approach based on updateable queue and Interactive Stream Transport Protocol (ISTP) was proposed. Compared with traditional data filtering methods, the proposed approach focused more on collaborative requirements. The network transmission messages (including commands, events and state update messages) of CVEs were categorized into key messages and non-key messages. Then updateable queue was used to filter non-key messages adaptively according to network condition, and messages in updateable queue were transmitted through ISTP. Performance evaluation indicated that this approach could satisfy not only scalable but also collaborative requirements of CVEs.

Key words: computer supported collaborative work, collaborative virtual environment, synchronization, interaction, data filtering