安顺移动镇宁县城语音DT测试报告
安顺移动网络优化小组
2012年3月
1
（2012/3/6）
目 录
一、测试结果汇总 ····························································································································· 3 二、 电平、质量分布图 ····················································································································· 3
1.电平分布 ················································································································································· 3 2.话音质量 ················································································································································· 4
三、 案例分析 ····································································································································· 5
1.镇宁石柱湾路段切换延迟语音质量差 ································································································· 5 2.北街菜场附近占用工商局3小区信号语音质量差 ············································································· 5 3.三桥基站附近占用东大街1小区信号语音质量差 ············································································· 7 4.华原楼基站附近占用电力公司1800_2小区信号未接通一次 ···························································· 7
四、小结 ············································································································································· 8
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一、 测试结果汇总（本周对镇宁县城进行整体DT测试，具
体指标如下：）
分公司 指标 网络类型 移动（GSM） 全程呼叫成功率（%） 96.97% 语音RxQuality质量 94.80% 紫云县 覆盖率（%） 99.62% 掉话率（%） 0.00% 接通率（%） 96.97% 二、 电平、质量分布图
1.电平分布
3
2.话音质量
4
三、 案例分析
1.镇宁石柱湾路段切换延迟语音质量差
问题分析：
在镇宁石柱湾路段车辆由东往西行驶测试中，MS占用镇宁电力公司3信号，接受电平-90dbm，其邻区镇宁石柱湾1电平-71dbm，未及时切换，电平拖延至低电平，引起语音质量差。 解决方案：
修改镇宁电力公司_3、镇宁电力公司1800_3向镇宁石柱湾1小区的切换参数，加强切换速度。
2.北街菜场附近占用工商局3小区信号语音质量差
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问题分析：车辆在老贵黄公路由北往南行驶（北街菜场附近），MS占用镇宁工商局3信号，接受电平-64dbm，与邻区镇宁华原楼_1 BCCH同频干扰，引起语音质量极差（7级）。
解决方案：
修改工商局3小区（CI:557）BCCH:64->16,功率降低6db（美化天线）。
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3.三桥基站附近占用东大街1小区信号语音质量差
问题分析：车辆东大街由东往西行驶测试中，MS占用东大街1小区信号，与移动大楼2小区TCH:35同频，引起语音质量差。
解决方案：修改移动大楼2小区TCH：35->32。
4.华原楼基站附近占用电力公司1800_2小区信号未接通一次
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问题分析：华原楼由西往东行驶，占用电力公司1800_2小区信号(TCH:529)，与镇宁水利局1800_3小区BCCH:528邻频，引起语音质量差，导致未接通一次。 解决方案：
修改镇宁水利局1800_3小区BCCH:528->543。
四、小结
本次对县城全面DT测试，总体测试指标良好，覆盖率99.62%,语音质量：94.80%,接通率96.97%,掉话率0%。
镇宁县城目前主要问题，个别基站覆盖过远，部分路段存在频率干扰，语音质量有一定影响，经对县城3个月的逐步优化调整，县城指标改善明显，已基本没有较大的网络问题，指标已比较稳定。
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