小型认知无线网络通信协议的制定与设计

河北联合大学轻工学院QINGGONGCOLLEGE,HEBEIUNITEDUNIVERSITY毕业设计说明书论文题目：小型认知无线网络通信协议的制定与设计2013年05月30日摘要-I-摘要认知无线电网络具有动态、灵活、智能地使用频谱资源，提高频谱利用率的特点，其网络结构和协议体系的设计是实现上述网络功能的关键。现有基于认知无线电技术的网络架构主要有美国的CORVUS系统，基于IEEE802.22的无线局域网(WRAN)和支持多信道多接口的无线Mesh网络；协议体系有CORVUS协议体系，军用的XG系统协议及WRAN协议等。提出了一种小型认知无线网络的频谱协同感知方法，并在此基础上设计了一种小型认知无线网络的通信协议。通过协议程序复杂度的角度切入，对该协议进行了分析。同其他典型协议相比较，该协议通过采用集中式控制、分布式感知、点对点通信的机制，尽可能地做到了扬长避短，使系统的整体稳定性和复杂度得到了兼顾。关键词认知无线电；网络架构；网络协议；认知无线网络；协同感知；通信协议；程序复杂度Abstract-II-AbstractCognitiveradionetworkshavetheabilitiesofutilizingspectrumdynamically，agilelyandintelligently，andimprovingtheefficiencyofspectrumusage.Consequently，boththeprotocolandarchitecturaldesignsforcognitiveradionetworksisverycrucial.ThenetworkarchitecturesinexistingsystemsincludedcontentsareCORVUSsystemintroducedinAmerica，WirelessRegionalAreaNetwork(WRAN)basedonIEEE802.22aswellasthewirelessMeshnetworksupportingmulti-channelandmulti-interface；relatednetworkprotocolsareofCORVUSsystem，theXGsystemformilitaryapplications，andWRAN.Acooperativespectrumsensingmethodofsmall-scalecognitivewirelessnetworkisproposed.Onthisbasis，acommunicationprotocolofsmall-scalecognitivewirelessnetworkisdesigned.Startingfromtheprogramcomplexity，thispaperanalyzesandevaluatesthecommunicationprotocol.Comparedwithothertypicalprotocols，theperformanceofthisprotocolisimprovedbyusingthemechanismofcentralizedcontrol，distributedsensingandpointtopointcommunication.Thestabilityandcomplexityofthesystemaretakenintoaccount.Keywords：cognitiveradio；networkarchitecture；networkprotocol；cognitivewirelessnetwork；collaborativeawareness；communicationprotocol；programcomplexity目录-III-目录摘要.............................................................................................................................IAbstract.........................................................................................................................II第1章绪论..................................................................................................................11.1认知无线电的产生背景和特征.........................................................................11.1.1CR技术的产生..........................................................................................21.1.2CR特征........................................................................................................21.1.3认知无线电与软件无线电之间的关系.......................................................31.1.4CR当前的发展与标准.................................................................................31.2认知无线网络的研究背景..................................................................................4第2章认知无线网络的简介......................................................................................52.1认知无线网络的概念.........................................................................................52.2认知无线网络的特点.........................................................................................52.2.1认知阶段.......................................................................................................62.2.2学习阶段.......................................................................................................62.2.3决策和调整阶段...........................................................................................6第3章认知无线网络的体系结构............................................................................83.1目前提出的具有代表性的认知无线网络(CRN)体系结构...............................83.2网络架构..............................................................................................................83.2.1CORVUS系统...............................................................................................93.2.2无线区域网...................................................................................................93.2.3支持多信道多接口的无线Mesh网络........................................................93.3协议体系...........................................................................................................103.3.1CORVUS的协议体系.................................................................................103.3.2XG项目的协议体系...................................................................................113.3.3WRAN的协议体系....................................................................................133.4CRN网络动态接入...........................................................................................153.4.1CRN中PHY层中的关键技术..................................................................163.4.2CRN中MAC层中的关键技术.................................................................17第4章小型认知无线网络的关键技术....................................................................184.1引言....................................................................................................................184.2认知无线网络的频谱感知................................................................................184.2.1频谱感知的功能和特点..............................................................................184.2.2常用频谱感知方法......................................................................................194.3认知无线网络的频谱分配........................