一种新型的认知无线电网络架构

Novel Architecture Network for Cognitive Radio

网络宽带化、业务多样化以及现有的固定频谱管理模式使无线网络面临资源日益匮乏的巨大挑战。动态变化的异构网络环境更加剧了资源紧缺和业务需求之间的矛盾,严重制约了现有和未来无线网络的部署和运行。为解决以上难题,首先对现有无线网络协议进行了详细讨论与分析,总结出其自身特点和存在的问题,包括IEEE 802.22认知功能、IEEE 1900.4认知功能和ETSI RRS(重配置无线子系统)认知功能。在深入研究无线网络中认知理论与方法的基础上,提出一种全新的认知无线网络架构模型,包括系统频谱管理、网络规划管理、重配置管理、无线资源管理、认知环处理以及认知信息承载方式。该架构能够更好地协调和支持网络的学习、推理、预测、融合、决策和重构等行为。

Due to the growing bandwidth,business and the existing fixed frequency management mode,the wireless network is facing great challenges that the network resources are becoming more and more shortage.The dynamic changes of heterogeneous network environment causes more conflicts between resource shortage and business needs,so it seriously restricts the deployment and operation of wireless network in the present and future.To solve the above problem,this paper made a detailed discussion and analysis to the existing protocols of wireless network,and it summarized the characteristics and existing problems including the cognitive function of IEEE 802.22,IEEE 1900.4 and ETSI RRS.It proposed a novel architecture for cognitive wireless network based on the cognitive theory and method of wireless network.This model contains system frequency management,network planning management,heavy configuration management,wireless resource management,cognitive ring processing and cognitie information load mode etc.According to this architecture,it will be better to coordinate and support network learning,reasoning,forecasting,fusion,decision-making and reconfiguration.