认知无线网络架构与关键技术研究

认知无线网络是一种开放性的智能网络,通过网络环境的学习分析,对网络状态进行规划、决策和响应。认知无线网络使网络从静态工作模式发展到动态自适应工作模式,从单一封闭式网络发展到异构融合网络,是解决网络容量受限,实现频谱高效利用和异构网络融合的有效途径之一。认知无线网络的相关研究在国家973项目的支持和项目组各单位的共同努力下取得了长远发展,主要讨论认知无线网络架构的理论模型、实现功能以及部署实现,然后分析了支撑架构的关键技术研究,主要包括多域主动认知方法、自主资源决策管理、无线自主传输机制以及体系结构适变技术等。

Research on Cognitive Radio Networks Architecture and Key Technologies

Cognitive radio network （CRN） is a cognitive process of network, which makes planning, decision and response for network state through learning and analysis of the network environment.CRN realizes that the network transformation from static model to dynamic adaptive development mode, and from a single closed network development to heterogeneous network.Hence, CRN is one of the effective ways to solve the limited network capacity, and to satisfy the national strategic demand on the frequency spectrum efficient- utilization and the integration of heterogeneous networks.The investigations, in the field of cognitive radio networks ,have made long-term development under the support of national 973 project and the joint efforts of project group.This paper mainly discusses the cognitive wireless network theoretical model, the architecture of function and deployment of implementation. Moreover, in order to realize the proposed CRN＇s architecture, the key technologies are analyzed, such as active multi-domain cognitive method, autonomic resource management, wireless autonomous transmission mechanism, architecture adaptive technology, etc.