relationship, established equivalent relationship 14, and subject: application problem (4)--scores and percentage application problem review content overview answers scores, and percentage application preliminary knowleoblem of key is: according to meaniphing, (1) determine standard volume (units \1\n in-line solution. Category fraction multiplication word problem score Division applications engineering problem problem XV, a subject: review of the measurement of the amount of capacity, measurement and units of measurement of comnt and their significance in rate 1, currency, length, area, vume 1, size 2, table ...olume, unit size, volume, weight and rate. (Omitted) 2, commonly used time units and their relationships. (Slightly) with a measurement units Zhijian of of poly 1, and of method 2, and poly method 3, and of method and poly method of relationship measurement distance of method 1, and tool measurement 2, and estimates 16, and subject: geometry preliminary knowledge (1)--line and angle review content line, and segment, and Ray, and vertical, and parallel, and angle angle of classification (slightly) 17, and subject: geometry prdge (2)--plane gracs review content triangle, and edges shaped, and round, and fan axisymmetric graphics perimeter and arehea combination graphics of area subject : Preliminary knowledge (3)-review of solid content category 1-d shapes are divided into: cylinder and cone 2, column is divided into: cuboid, square 3, cone cone of the features of cuboids and cubes relatimon units of measuremeonship between characteristics of circular cone is slightly solid surface area and vol和WCDMA---
一：发现问题后，比如干扰问题的问题，你们是如何优化的？
答：
在WCDMA 网络里干扰的来源主要有系统外干扰、导频污染、扰码规划不合理等。 系统外干扰：
顾名思义，是指WCDMA 系统外部的干扰源造成的上行链路质量差(通常系统外干扰只影响上行)。常见的干扰源有广播发射器谐波、微波传输系统以及非法微波发射器等[6]。 解决方法：定位干扰区域，去激活该区域周围小区，用扫频仪观察该区域，查看是否有明显的频率信号出现，如果有，继续在UE 端测试确认是否能收到基站信号，如果没有收到基站信号，则可以确定此处存在干扰源。 扰码规划不合理：
主要现象为同频同扰码基站覆盖区域重叠，导致小区间的同频干扰。 解决方法：进行合理的扰码规划。 导频污染：
一般情况下，当服务小区PCCPCH RSCP 大于-95dBm，而C/I 小于-3dB 产生的掉话，基本上可以认为是下行干扰的问题所导致（当切换不及时的时候，也可能出现服务小区RSCP信号很好，C/I 很差的情况；但此时目标小区的RSCP 和C/I 都很好）。下行的干扰通常是指导频污染，当某一地点存在过多的强导频信号，但是却没有一个足够强主导频信号，即定义该地区存在导频污染。用公式表示为：
(1) P_CCPCH_RSCP> -85dBm 的小区个数大于等于4 个；(2) P_CCPCH_RSCP(1st)-P_CCPCH_RSCP(4th)<= 6dB；当以上两个条件都满足时，则称该地区存在导频污染。通常当目标小区综合质量较差时，如PCCPCH 的C/I 都在-3dB 左右波动，容易出现切换失败导致SRB 复位或TRB 复位，SRB复位引起的掉话表现为手机或者RNC 不能收到确认模式传送的信令，导致链接释放；TRB复位主要在PS 业务上发生,一般可以通过确认掉话发生时UE 发射功率或者下行码发射功率情况来辅助确认。
解决方法：在该区域产生一个足够强的主导频信号，具体可以通过调整天线下倾角、方位角增强主覆盖小区的信号，通过压下倾角、降功率、调整方位角的方式降低非主覆盖小区的信号；也可以通过添加RRU，增强主小区信号。
二、之前有没有做过单站验证？簇优化？ 三、用过导频仪吗？ 答：
四、语音业务占几个码道？视频业务占几个码道？
答：语音占两个码道，视频占八个码道
五、理论知识怎么样？ 六、说一下信令流程
七、处理客户投诉时怎么处理？如何和客户沟通？
relationship, established equivalent relationship 14, and subject: application problem (4)--scores and percentage application problem review content overview answers scores, and percentage application preliminary knowleoblem of key is: according to meaniphing, (1) determine standard volume (units \n in-line solution. Category fraction multiplication word problem score Division applications engineering problem problem XV, a subject: review of the measurement of the amount of capacity, measurement and units of measurement of comnt and their significance in rate 1, currency, length, area, vume 1, size 2, table ...olume, unit size, volume, weight and rate. (Omitted) 2, commonly used time units and their relationships. (Slightly) with a measurement units Zhijian of of poly 1, and of method 2, and poly method 3, and of method and poly method of relationship measurement distance of method 1, and tool measurement 2, and estimates 16, and subject: geometry preliminary knowledge (1)--line and angle review content line, and segment, and Ray, and vertical, and parallel, and angle angle of classification (slightly) 17, and subject: geometry prdge (2)--plane gracs review content triangle, and edges shaped, and round, and fan axisymmetric graphics perimeter and arehea combination graphics of area subject : Preliminary knowledge (3)-review of solid content category 1-d shapes are divided into: cylinder and cone 2, column is divided into: cuboid, square 3, cone cone of the features of cuboids and cubes relatimon units of measuremeonship between characteristics of circular cone is slightly solid surface area and vol和八、单站点验证主要做哪些工作？
答：扰码和载频检查：看是否和规划的相同 信号覆盖检查：检查UE接收的PCCPCH RSCP,C/I是否高于预定门限，天线倾角、方向角与规划是否一致。
业务呼叫测试：检查各项业务是否正常 天线分集检查：比如看天线是否接反
切换测试：检查软切换和3/2G切换是否正常
答案二：工程参数：方位角、下倾角、站高、位置等 无线配置：频点、扰码、MAC、CI、RAC 业务态：AMR、VP、H、384、还有上传 覆盖（DT）：电平、干扰、切换问题、扇区接反问题 空闲态：GSM邻区
九、即将开始的TD四期是如何规划频点的？
答：F:1880—1900MHz A:2010—2025MHz E:2320—2370MHz
9个频点：室内：10055；10063；10071
室外：10080；10088；10096；10104；10112；10120
十、如何修改扰码和频点？扰码有多少个，怎么分组？
在TD-SCDMA系统中共定义了128个扰码，每个扰码长度为16，分成32组，每组4个，组号从0～127。
十一、说一下切换的流程？ 十二、跨RNC是如何切换的？ 十三、.CIO
CIO是切换中的一个参数，它的单位是DB，一般取值-20~20，
CIO是个虚拟电平，如果小区想快速切到邻小区，可调整CIO为正值，增大UE虚拟电平，如果不想快速切换到邻小区，可调整CIO为负值，减小电平，加快切换。这是个小区对小区的参数调整。
十四、路测软件的一些参数设置以及要注意的参数
答：PS占用8个码道，CS占用2个，PCCPCH RSCP，C/I 临区关系 ，GRPH中的切换关系和设备是否掉的提示
十五、路测中遇到的掉话事件的原因以及切换失败的处理方法
relationship, established equivalent relationship 14, and subject: application problem (4)--scores and percentage application problem review content overview answers scores, and percentage application problem of key is: according to meaning, (1) determine standard volume (units \hen in-lieliminary knowlene solution. Category fraction multiplication word problem score Division applications engineering problem problem XV, a subject: review of the measurement of the amount of capacity, measurement and units of measurememon units of measurement and their significance in rate 1, currength, area, volume, unit size, volume, wonships. (Slightly) with a measurement units Zhijian of of poly 1, and of method 2, and poly method 3, and of method and poly method of relationship measurement distance of method 1, and tool measurement 2, and estimates 16, and subject: geometry preliminary knowledge (1)--line and angle review content line, and segment, and Ray, and vertical, and parallel, and angle angle of classification (slightly) 17, and subject: geometry prdge (2)--plane graphics review content triangle, and edges shaped, and round, and fan axisymmetric graphics perimeter and area combination graphics of area subject : Preliminary knowledge (3)-review of solint of comd content category 1-d shapes are divided into: cylinder and cone 2, columncy, len is divided into: cuboid, square 3, cone cone eight and rate. (Omitted) 2, commonly used time units and their relatiof the features of cuboids and cubes relationship between characteristics of circular cone is slightly solid surface area and volume 1, size 2, table ...和答：由于弱覆盖、切换失败、位置更新失败、23G切换失败等，一般情况下，切换失败都是由于信号受到高大建筑物的阻挡而引起，所以我们做的工作是希望要在信号在受到阻挡前能够顺利切换到其他小区，让其他小区来替换当前小区的作用，通常是通过天线的调整比如下倾角，方位角和小区参数的设置比如：小区功率控制。如果这些常规的手段都无法解决，那么我们就应该考虑此站点的适用性了，可以建议考虑换址。
十六、RNC NODEB UE接口相互之间的连接
答： Rnc和nodeb之间是通过iub接口连接、 rnc和rnc之间是通过iur接口连接 Nodeb和ue之间是通过iu接口连接
十七、RF优化要注意的及相关问题
主要为覆盖、切换等，具体阐述了覆盖及切换的类型及解决方法等。
十八、拐角效益？
答：当移动台沿着一个拐角移动时，移动台的接收信号电平发生变化。在拐角后面如果有一个新的基站，移动台接收到的信号强度就会上升得非常快。如果移动台不能足够快地获得新基站，那么增加的干扰就会导致掉话。另一方面，如果新基站不能调节移动台的功率，高的移动台发射功率会闭塞新小区内的所有用户。
十九、常用的无线参数调整有哪些？
PCCPCH 发射功率、SCCPCH 功率、DwPCH功率、最小接收电平、
（小区重选迟滞、小区重选延迟时间、空闲模式小区重选同频测量门限、空闲模式小区重选异频测量门限）1G、2A、3A事件有关的参数设定
二十、从信令上分析下进行语音通话的流程？
? 随机接入过程，建立UE和接入网之间的信令连接（RRC连接） ? 初始直传，建立UE和CN间的信令连接 ? 上下行直传，鉴权过程 ? 安全模式控制，协商加密算法 ? 呼叫建立过程，SETUP中发送被叫号码 ? RAB建立过程，在UU口只能看到RB建立过程 振铃接听过程，此后双方开始通话。
二十一、鼎力的测试软件前后台软件用过没有？他们之间有什么区别？
用过的。前台主要是用于路测，后台主要用于信令分析，出报表统计结果。
二十二、在实际测试中测试到TD的MOS值是多少才算正常？
3.5左右算正常的。MOS值范围是0-5 值越大说经语音质量越好 我们这边设的都是3.5
二十三、如何在后台添加邻区？