第1页共41页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共41页高速铁路现网优化技术方案第2页共41页第1页共41页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共41页目录一、前言...................................................................................................................4二、研究背景...........................................................................................................52.1铁路提速........................................................................................................................52.2CRH简介[1]......................................................................................................................5三、高速列车质量问题分析....................................................................................63.1穿透损耗........................................................................................................................63.2覆盖信号强度需求........................................................................................................63.2.1手机在单小区内的最低信号强度需求..................................................................63.2.2相邻小区的重叠区域.............................................................................................73.2.3小区主覆盖区距离.................................................................................................93.2.4传播模型...............................................................................................................103.2.5切换边界信号强度要求........................................................................................113.3小结..............................................................................................................................11四、高速铁路的优化策略......................................................................................13第3页共41页第2页共41页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第3页共41页4.1高速列车的通信质量目标...........................................................................................134.2优化方向......................................................................................................................134.3覆盖优化......................................................................................................................134.3重选与切换算法优化..................................................................................................144.4专网覆盖与现网调整..................................................................................................144.4.1高速列车覆盖目标...............................................................................................154.4.2基站覆盖特点.......................................................................................................154.4.3话务特点...............................................................................................................154.4.4重选与切换...........................................................................................................154.4.5周边区域的影响控制............................................................................................154.4.6建设环境要求............................................................................................
