Intelligent and efficient development of wireless networks:A review of cognitive radio networks  

作　　者：ZHANG Ping LIU Yang FENG ZhiYong ZHANG QiXun LI Qian XU Ding 

机构地区：[1]Wireless Technology Innovation Institute(WTI),Key Laboratory of Universal Wireless Communications,Ministry of Education,Beijing University of Posts and Telecommunications,Beijing 100876,China

出　　处：《Chinese Science Bulletin》2012年第28期3662-3676,共15页

基　　金：supported by the National Basic Research Program of China (2009CB320400);the National Natural Science Foundation of China(61121001,60832009);the National Science and Technology Major Project of China (2012ZX03003006);the Program for New Century Excellent Talents in University (NCET-01-0259)

摘　　要：Facing the challenges on how to improve spectrum efficiency and how to realize heterogeneous network convergence in future wireless networks,a cognitive radio network(CRN) is proposed as one of the solutions.This has become a major research topic in recent years and it is timely to give an overview of the development of CRN and to summarize key issues and technologies.The fundamental concepts of CRN,including the cognitive cycle model,the network architecture,and the cognitive ability and intelligent decision functions,are introduced in detail based on recent advances.Key issues for each topic,followed with recent research on theory and method,are then classified and the industrialization developments of CRN testbeds based on TD-LTE cellular system and standards are briefly presented.Finally,conclusions are reached on the perspectives and directions of future development.Facing the challenges on how to improve spectrum efficiency and how to realize heterogeneous network convergence in future wireless networks, a cognitive radio network （CRN） is proposed as one of the solutions. This has become a major research topic in recent years and it is timely to give an overview of the development of CRN and to summarize key issues and technologies. The fundamental concepts of CRN, including the cognitive cycle model, the network architecture, and the cognitive ability and intelligent decision functions, are introduced in detail based on recent advances. Key issues for each topic, followed with recent research on theory and method, are then classified and the industrialization developments of CRN testbeds based on TD-LTE cellular system and standards are briefly presented. Finally, conclusions are reached on the perspectives and directions of future development.

关 键 词：无线电网络 无线网络 智能 移动通信系统 高频谱效率 产业化发展 CRN 网络融合 

分 类 号：TN929.5[电子电信—通信与信息系统] TN92[电子电信—信息与通信工程]