本文介绍了802.16系列标准与规范的制定过程， 比较了802.16和802.11在技术特点和市场定位方面的不同，并分析了无线宽带城域网产品未来的市场发展前景。
The evolution of IEEE 802.16 standards are introduced, and the differences between 802.16 and 802.11, as well as the prospective of related products, are analyzed.
本文主要深入分析并比较了以IMS规范为代表的几个与课件内容有关的国际规范。
In this paper several international specifications for the courseware content, especially the IMS content Packaging specifications, have been thoroughly analyzed and carefully compared.
论文采用了比较、实证与规范等多种分析方法。
The article used comparative analysis, combining the empirical analysis and correlation analysis method and so on.
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