WCDMA室内覆盖规划方案

WCDMA室内覆盖系统规划设计蔡杰周承诚须佳昀摘要室内覆盖作为移动通信网络深度覆盖和网络优化的重要手段在当前移动通信运营商完善网络覆盖，提升服务层次等方面发挥重要作用。本文首先课题研究背景，阐述了WCDMA等为代表的3G系统的演进历程；同时结合室内覆盖建设特点和现状，就WCDMA室内覆盖建设的必要性以及面临的问题做了阐述。接着讨论了WCDMA室内覆盖规划的一些总体设计思路。包括总体设计流程，规划选点的划分方法和优先级划分。分析了各类WCDMA室内覆盖信号源的特点以及相互比较，介绍了信号源选择的基本原则。主要阐述了分布系统的设计方法与设计要点。针对当前国内运营商2G和3G共存的实际情况，讨论了WCDMA与已有2G系统共建的思路。并针对现有2G系统在兼容WCDMA方面的有缺点，进行分析。讨论了WCDMA与2G共建的合路方式，馈线、天线的改造等方法。详细分析了WCDMA与其他系统同接入一套分布系统时，抑制杂散、阻塞、互通干扰所需的隔离度。最后以实例说明WCDMA室内覆盖实际工程的基本工作内容。关键词：室内覆盖，WCDMA，3G，多系统合路，干扰分析。PLAN&DESIGNOFWCDMAINDOORCOVERAGESYSTEMABSTRACTAsaveryimportantmethodofnetworkdeepcoverageandoptimization,indoorcoverageplaysagoodrollfortheoperateortodevelopthenetworkcoverageandprovidehighqualityservice.Wefirstdiscussthebackgroundofthisarticle,expatiatetheroadmapoftheevolutionof3G,inwhichWCDMAisagoodexample.Connectingwiththeindoorcoverage,wethenanalysethenecessarytodesignWCDMAindoorCoverage,andtheproblemwemustsolve.WealsodiscussthegeneralmethodofWCDMAindoorcoveragedesign,includingtheflowchartofdesign,wayofclassificationandpriorityofthebuildingstobecovered.Wefigureoutthespecialtyofdifferentkindsofsignalsourcesandcomparewithinthosesources,andhowtochoosethesuitablesourcefortheindoorcoverageandthekeypointstolayouttheantennaandfeederdistribution.Accordingtothecoexistenceof2Gand3GoperatorsinChina,wediscussedthethoughtofcombiningWCDMAwithexisting2Gsystem.Thosedisadvantageswhichweredetectedincombiningthesetwosystemshavebeenanalyzed.AndwealsodiscussedthepointofcombiningbetweenWCDMAand2Gandthereconstructionoffeedersandantennas.Furthermore,weanalyzedtheisolationrequiredfromthelostinhibition,obstructFurthermore,weanalyzedtheisolationrequiredfromthelostinhibition,obstructionandinteroperabilityinterferenceinconnectingWCDMAintoadistributedsystemwithothers.Keywords:IndoorCoverage，WCDMA，3G，POI，Interference.目录摘要....................................................................................................................................................................IABSTRACT............................................................................................................................................................II目录.................................................................................................................................................................III一.概述.....................................................................................................................................................11.1课题背景............................................................................................................................................11.2WCDMA概述....................................................................................................................................21.2.13G技术简介...............................................................................................................................21.2.2国内2G到3G的技术演进........................................................................................................21.2.3WCDMA主要技术特点.................................................................................................................31.3室内覆盖系统概述.............................................................................................................................51.3.1室内覆盖系统简介....................................................................................................................51.3.2室内覆盖分布系统....................................................................................................................61.3.3国内室内覆盖现状....................................................................................................................71.4WCDMA室内覆盖............................................................................................................................81.4.13G室内覆盖必要性...................................................................................................................81.4.23G室内覆盖现状.......................................................................................................................91.4.3WCDMA室内覆盖需要解决的问题.............................................................................................91.5本文主要内容...................................................................................................................................10二.WCDMA室内覆盖规划设计总体思路....................................................................................................122.1WCDMA室内覆盖建设总体流程........................................................................................................122.2WCDMA室内覆盖规划设计的总体原则............................................................................................132.3WCDMA室内覆盖选点........................................................................................................................142.3.1室内覆盖选点目标..................................................................................................................142.3.2优先级别划分....................................................