复杂无线环境中频谱资源的协同感知和动态分配技术

In the last decade, the rapid growth of all kinds of wireless services and networks has led to an explosive demand on radio spectrum. Meanwhile, the complex wireless environment will be essentially caused by different wireless services existing in different wireless networks. In this case, three are two issues should be addressed for improving the quality and the performance of the co-existing wireless communication networks: 1) the low efficient spectrum usage of the wireless users in the complex wireless environment; 2) the cross network spectrum resource with the characteristics of dynamic and liable to be interference. To solve these two problems, we first will study the cognition and detection model of the spectrum resources in the complex wireless environment according to the spectrum usage feature in the heterogeneous wireless network; Secondly, to discover the under-utilized spectrum, we will design the distributed cooperative sensing scheme for the wireless cognitive radio networks, and study the collaborative spectrum detection protocol for the heterogeneous networks wherein the wireless users may have different sensing abilities; Then, we will study the security mechanism for the cooperative sensing based on the characters of the inter-network and multiple domain wireless resources. At last, we will study the dynamic spectrum allocation scheme for the persistent service among the heterogeneous wireless networks. To summary, we will focus on the theoretical analysis and algorithms development for the cooperative spectrum sensing and dynamic access under complex wireless environment. Particularly, we will perform in-depth study on the cooperative spectrum sensing and access in heterogeneous multiple-users networks.

在这种复杂的无线环境中，无线通信服务和网络性能发展将面对两大瓶颈1）复杂无线环境中频谱资源利用的低效性； 2）跨网络频谱资源的动态性和易受干扰性。针对这两个问题，本课题拟针对如下内容开展研究：根据异构网络的频谱使用特性，研究基于复杂无线环境下频谱资源的认知与辨识模型；针对复杂频谱资源环境，设计分布式认知无线网络的合作检测方法，研究各种异构网络中具有不同检测功能的无线设备的协同频谱检测协议；同时基于异构网络行为特征开展协作感知的安全机制的研究；研究面向网络一致化服务的动态频谱分配方法，寻求跨网络频谱资源公平合理使用的新途径。总的说来，本课题将主要研究复杂无线环境中动态频谱检测和共享的相关理论和算法，特别地，将对多用户协作频谱检测和跨网频谱接入问题进行深入的研究。

在复杂的无线环境中，无线通信服务和网络性能发展将面对两大瓶颈1）复杂无线环境中频谱资源利用的低效性； 2）跨网络频谱资源的动态性和易受干扰性。针对这两个问题，本课题拟针对如下内容开展研究并相应获得了重要成果：研究了异构网络的频谱使用特性，得到了基于复杂无线环境下频谱资源的认知与辨识模型；针对复杂频谱资源环境，提出了分布式认知无线网络的合作检测方法，在各种异构网络中设计了针对异构无线设备的协同频谱检测协议；基于异构网络行为特征开展协作感知的安全机制的研究；研究面向网络一致化服务的动态频谱分配方法，得到了跨网络频谱资源公平合理使用的新型管理机制。