摘要
介绍了IEEE 802.22(WRAN,无线区域网)标准提出的背景和进展情况,对IEEE 802.22草案中的MAC(媒体接入控制)层技术进行了描述,介绍并分析了WRAN系统对授权用户的检测和WRAN系统的自共存机制等方面的内容,说明了WRAN未来的研究方向并展望了其市场应用前景。
The background and development of IEEE802.22 which is the first worldwide wireless standard based on cognitive radios are introduced in this paper. The structure and the principle of the MAC layer are analyzed in detail, including the sensing technology for incumbent detection and the coexistence mechanism between WRANs. Finally, the potential development and application of IEEE802.22 standard are given.
出处
《电视技术》
北大核心
2007年第8期71-73,79,共4页
Video Engineering
