Spectrum-aware Location-based Routing in Cognitive UWB network
Spectrum-aware Location-based Routing in Cognitive UWB network
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DOI：
10.1109/crowncom.2008.4562508
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发表时间：
2008-05
期刊：
影响因子：
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通讯作者：
Fangmin Xu;Luyong Zhang;Zheng Zhou;Y. Ye
中科院分区：
文献类型：
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作者：
Fangmin Xu;Luyong Zhang;Zheng Zhou;Y. Ye
认知超宽带（UWB）网络是具有感知频谱、检测主系统中可用频谱空洞并在检测到的频谱空洞中进行通信的能力的超宽带网络。利用UWB技术的精确定位能力和频谱感知信息，由工作在同一频谱信道上的邻居节点组成局部簇，簇间通过网桥网关节点将整个网络互连。在此基础上，提出了一种基于频谱感知的分簇认知UWB网络路由方案，包括路由发现和路由修复过程。该路由方案的独特之处在于能够智能地适应网络和可用频谱资源的变化。仿真结果表明，频谱感知路由在动态频谱环境下的性能优于传统的固定频谱分配的路由方案。
Cognitive ultra-wideband (UWB) network is the UWB network with the ability of sensing spectrum, detecting the available spectrum holes in primary system, and communicate in the detected spectrum holes. Based on the precise position capability of UWB technology and the spectrum sensing information, local clusters are constructed by neighbor nodes which operated in the same spectrum channel, and the entire network is interconnected by the clusters through bridge gateway nodes. Furthermore, a spectrum-aware routing scheme is provided for clustered cognitive UWB network, which including the process of routing discovery and repairing. The unique feature of this routing scheme is its ability of intelligent adaptation to the change of network and available spectrum resource. Simulation proved the performance of spectrum-aware routing in dynamic spectrum environment is better than traditional routing scheme with fixed spectrum allocation.