在IEEE 802.16无线城域网中，基于带宽请求消息的预约协议在高ip业务负载时易导致预约冲突。
Reservation protocols based on bandwidth request messages are prone to collisions during heavy IP traffic load in IEEE 802.16 wireless metropolitan area networks.
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.
文章首先介绍了IEEE 802.16a协议和无线宽带城域网系统结构，并对基于此协议的无线宽带城域网络移动电子商务系统结构进行了研究。
This dissertation introduces IEEE Std 802.16a and broadband wireless systems(BWS), Mobile E-business system infrastructure development based on IEEE 802.16A for BMAN is introduced too.
文章首先介绍了IEEE 802.16a协议和无线宽带城域网系统结构，并对基于此协议的无线宽带城域网络移动电子商务系统结构进行了研究。
This dissertation introduces IEEE Std 802.16a and broadband wireless systems(BWS), Mobile E-business system infrastructure development based on IEEE 802.16A for BMAN is introduced too.
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