华为 CDMA 网络优化面试题目汇总

2.

   导频污染概念

 

                                                                                                                                                          

 

 

.........................................................................................................................................................

 

 19

   

3.

   当存在导频污染时，可能会导致的网络问题

 

                                                                                                     

 

 

....................................................................................................

 

 19

   

4.

   导频污染产生的原因

 

                                                                                                                                              

 

 

.............................................................................................................................................

 

 20

   

5.

   导频污染的解决方法：

 

                                                                                                                                          

 

 

.........................................................................................................................................

 

 20

   

6.

   可能导致掉话高的原因

 

                                                                                                                                          

 

 

.........................................................................................................................................

 

 20

   

7.

   可能导致拥塞的原因

 

                                                                                                                                              

 

 

.............................................................................................................................................

 

 21

   

8.

   可能导致软切换不成功的原因

 

                                                                                                                              

 

 

.............................................................................................................................

 

 21

   

9.

   影响软切换比例的主要因素

 

                                                                                                                                  

 

 

.................................................................................................................................

 

 21

   

10.

   可能导致硬切换不成功的原因

 

                                                                                                                            

 

 

...........................................................................................................................

 

 22

   

11.

   反向干扰判断

 

                                                                                                                                                        

 

 

.......................................................................................................................................................

 

 22

   

12.

   如果有某小区有带直放站需要修改那个搜索窗参数？

 

                                                                                   

 

 

..................................................................................

 

 22

   

(7)

   影响指标的原因分析

 

                                                                                                                                                    

 

 

...................................................................................................................................................

 

 23

   

1.

   上下行不平衡

 

                                                                                                                                                          

 

 

.........................................................................................................................................................

 

 23

   

2.

   切换参数设置不合理

 

                                                                                                                                              

 

 

.............................................................................................................................................

 

 24

   

3.

   邻区关系不合理

 

                                                                                                                                                      

 

 

.....................................................................................................................................................

 

 24

   

4.

   

    

搜索窗设置不合理

 

                                                                                                                                             

 

 

............................................................................................................................................

 

 24

   

(8)

   测试部分

 

                                                                                                                                                                        

 

 

.......................................................................................................................................................................

 

 25

   

1.

   测试时候主要关注哪些指标

 

 ,  需要注意什么

 

                                                                                                        

 

 

.......................................................................................................

 

 25

   

2.

   测试如何看出反向功率是否过大，如何解决；

 

                                                                                                 

 

 

................................................................................................

 

 26

   

3.

   如何从测试的数据中分析出覆盖是好还是坏；

 

                                                                                                 

 

 

................................................................................................

 

 26

   

4.

   路测测试过程中能发现哪些问题？

 

                                                                                                                     

 

 

....................................................................................................................

 

 26

   

5.

   在测试中怎么发现某个小区没有加邻区关系？

 

                                                                                                 

 

 

................................................................................................

 

 26

   

(9)CDMA

 

     网规网优典型案例

 

                                                                                                                                           

 

 

..........................................................................................................................................

 

 26

   

1.

   启用动态软切换有效降低软切换比例

 

                                                                                                                 

 

 

................................................................................................................

 

 26

   

2.

   多载波

 

 

    3606

 

     功率分配不合理导致话务不均衡软切换比例过高

 

                                                                       

 

 

......................................................................

 

 27

   

3.

   一个基站话务量过高导致周边基站软切成功率低

 

                                                                                             

 

 

............................................................................................

 

 28

   

4.

   搜索窗偏小造成直放站与施主基站切换失败的处理

 

                                                                                         

 

 

........................................................................................

 

 29

   

5.BSC

 

     框间软切换链路未配导致软切换成功率很低

 

                                                                                             

 

 

............................................................................................

 

 30

   

6.

   基站改频后出现过短

 

 

    PN

       复用导致掉话

 

                                                                                                               

 

 

..............................................................................................................

 

 31

   

(10)

 

 使用工具类

 

                                                                                                                                                                  

 

 

.................................................................................................................................................................

 

 32

   

1.

   网优工具

 

                                                                                                                                                                  

 

 

.................................................................................................................................................................

 

 32

   

2.

   路测工具

 

                                                                                                                                                                  

 

 

.................................................................................................................................................................

 

 32

   

(11)

 

 缩略语清单

 

                                                                                                                                                                  

 

 

.................................................................................................................................................................

 

 33

   

第 2 页 共 34 页