If we can get network bandwidth information in detail and tune encoding and streaming method, the whole stream media system will be improved.

本文正是在这样的背景下，研究开发了基于网络带宽测量技术的多码率流媒体系统。

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A push service system for location based tourism information was proposed by the combination of linear quad-tree, wireless network, Geographic information system (GIS) and cross media techniques.

结合线性四叉树、无线互联网、地理信息系统(GIS)和跨媒体技术，实现了一个具有高真实感、较强交互能力的旅游信息主动推送服务系统。

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