2022年LTE各基础知识点汇总 .pdf

名师整理精华知识点1.投诉处理流程：1，先收投诉单，看一下大致投诉内容，有一个处理思路2，给客户打电话了解一下客户投诉是语音业务还是数据业务，核实投诉位置3，找到投诉位置查看周边基站，让后台核实是否有告警退服等问题4，见到客户后问清是投诉室内还是室外，长期信号差还是之前信号好最近信号变差，核实客户手机型号5，如投诉数据业务，测试要做全，室内室外都要测试，核查周边地理环境，主要查看周围基站到投诉位置的距离和中间是否有建筑物遮挡6，对客户的不合理要求不要给予承诺，委婉拒绝说向上面反映7，及时反馈投诉单室分测试：1，核查基站是否告警2，确认经纬度是否正确，如有错及时反馈3，接入正常后，核查PCI 是否正常，做上传，下载，ping，CSFB测试4，确认室分分布范围，如有多个 PCI 需要核实每个 PCI 的分布楼层5，室内打点，找出有问题区域（如覆盖差，速率上不去等问题）6，核实室内外切换是否正常，是否有室分泄露情况名师整理精华知识点7，完成单验报告及时反馈宏站测试：1，核查基站是否告警2，确认经纬度是否正确，如有错及时反馈3，接入正常后，核查每个小区PCI 是否正常，每个小区分别做做上传，下载，ping，CSFB 测试4，拍下来每个小区天馈照片和每个小区覆盖方向环境照片5，上站核实每个小区方位角，下倾角，电子下倾角，晚上反馈给后台6，记录路测数据，尽量把站点周边路线全部跑到位7，路测完成后看该站解决了哪些问题，是否与周边站点有干扰，现场有条件要带他共进行调整，没条件请给出方案解决。8，完成单验报告及时反馈区别，宏站比室分要多路测和核查天馈，拍基站照片等步骤，室分则是手动打点，宏站需要考虑周边覆盖情况，如有问题需及时调整2.切换失败的原因介绍 1、邻区漏配：通过前台测试软件CXT 的信令中核查所测量小区与主小区之间是否有邻区关系，或是通过后台查证。文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4名师整理精华知识点2、越区覆盖孤岛效应：看越区站点与周围站点有无邻区。3、参数配置，如 CIO（该参数是设置主小区与目标小区之间切换快慢）、启动门限（有 A2 事件参数设置来决定）、判决门限等参数（有A3 事件参数设置来决定），根据不同场景设置A2、A3 门限值，若设置不合理会造成切换失败。4、干扰：如模 3 干扰，重叠覆盖，同频干扰。5、同频同 PCI：主小区设置邻区时设置为邻小区的 PCI，当出现两个相同PCI 的目标小区，切他们是同一频段时，会造成切换失败。6、超级小区添加辅小区邻区：主小区向目标小区切换时，若主小区配置邻区为超级小区的辅小区时，会造成切换失败。7、配置异频邻区参数配置不准确：核查后台参数设置。8、外部小区如 PCI、TAC 等信息登记错误：该问题属后台参数配置不合理造成切换失败。9、异频修改时，跨 OMMB 邻区设置：修改异频时，改异频小区要重新配置邻区，该过程可能会出现邻区漏配，造成切换失败。跨 OMMB 站点邻区设置需手动添加，无法通过自适应配置邻区，造成切换失败。10、邻小区故障：站点原因造成切换失败。11、邻区业务拥塞：站点服务故障造成切换失败。文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4名师整理精华知识点12、时钟问题：GPS 授时不同步，易造成终端切换失败。知识点汇总一重选和切换小区重选主要是在IDLE 状态下（RRC 释放），切换针对的是在Connec 态下（RRC 连接）。二重定向和盲重定向重定向是 RRC 处于连接状态时，先释放掉，然后通过重定向的频点在另外一个频点上重新进行连接。重定向有两种方式，基于测量的和基于非测量的。基于非测量的重定向也就是盲重定向。三 SINR差和下载速率低的主要原因SINR 差的主要原因可以分为两类：覆盖类和干扰类覆盖类：弱覆盖，过覆盖，重叠覆盖。干扰类：模三干扰。下载速率差原因有很多，除去覆盖和干扰的问题，还有一些其他原因造成速率差，比如服务器文件类型、终端设备异常、指定配比也可能引起下载速率不稳定。文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4名师整理精华知识点四 CSFBCSFB 本质上说就是一种切换，终端发起通话时由LTE 网络回落至 2G/3G 网络，当通话结束时再重新回落至LTE 网络的一个过程。Fast return 就是快速回落，主要是为了更好的用户体验，当通话结束时，为了更快的从2G/3G 网络回落至 LTE 网络，就需要采用该功能。五事件A1 事件：服务小区质量高于门限，这个事件可以用来关闭频间测量。A2 事件：服务小区质量低于门限，这个事件可以用来打开频间测量和系统间测量，因为这个事件发生后可能发生切换等操作。A3 事件：邻小区的质量好与服务小区的质量，这个事件一般用于频内、频间基于覆盖的切换。A4 事件：邻小区质量好于门限，这个事件一般用于基于符合的切换。A5 事件：服务小区质量低于一个门限并且邻小区质量高于一个门限，这个事件也可用于频内、频间基于覆盖的切换。Fast Return：快速回落，CSFB 回落用户在 3G 的语音业务结束后，如果需要实时快速返回LTE，则需要采用Fast Return功能。文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 ZP1H10S8N8R4文档编码:CS8F7N1O5P5 HZ6B7N9H5H7 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