【优质】湖北移动高层楼宇覆盖精细优化技术方案.ppt

2010年11月 优化前提条件 目录 目录 目录 完善室内覆盖质量控制方法 验收与维护 归纳总结高层室内小区的优化流程和措施 测试项目 测试内容 信号泄漏测试 建筑物外围10m处电平是否低于-85 dBm 切换/重选测试 大厦出入口切换情况 大厦各小区间、电梯内切换情况 高层小区未设置宏站邻区关系 话音业务测试 分区主要楼面、地下车库、电梯等 建筑边缘及窗口位置 数据业务测试 WAP测试 彩信测试 接到高层楼宇投诉 现场拨测 确认问题 半速率门限调整 信道配置优化 基站扩容 问题点 话务指标观察 收取CTRX指标 现场测试 故障判断 参数修正 参数不合理 更换故障硬件 整改布线系统 硬件问题 现象 高层窗口 采用电梯井覆盖方式 电梯厅覆盖增加小区间的重叠覆盖区域 调整电梯切换点 设置室外小区对室内小区的速度敏感切换和小区重选惩罚电平、惩罚时间 临时降低室内小区的发射功率 找到信号泄漏的天线并整改室内布 调整室内站和室外宏站的邻区 避免相邻室内站的同频同BSIC 避免由于上下行不平衡造成掉话 整改室内布线系统 电梯 室内信号泄漏 出入口 其他区域覆盖问题 通过扫频为室内站选用干净频点 控制宏站覆盖以减少干扰 增加室内小区天线或用板状天线替代全向天线，以增加在窗口的信号覆盖 调整小区重选和小区切换参数 高低层分区，重新规划邻区关系 复测确认 投诉解决 问题解决 问题仍存在 通话质量差 切换频繁 容量问题 质量问题 整个楼面 * * * The idea is that It is possible to reduce the accessibility to a cell of a quantity cellReselectOffset. In this way accessin that Cell is more difficult. This is the case of penaltyTime = 11111=640. On the other hand it is possible to make the access to a cell more favourable when penaltyTime 11111. This is the case of a Microcell which has to gather more traffic than the pure radio conditions would allow. The point is however that Microcells are small and what really matters is how small they are, compared to the speed of the MS. If the MS moves fast it shouldnt camp on the Microcell. Therefore the Microcell is hidden for a while by means of a temporaryOffset which is valid for penaltyTime. More precisely when the MS sees the cell in the six strongest neighbours it starts the timers. The timer is reset if the cell is removed from the 6 strongest neighbours. 640 = 31 * 20 * The idea is that It is possible to reduce the accessibility to a cell of a quantity cellReselectOffset. In this way accessin that Cell is more difficult. This is the case of penaltyTime = 11111=640. On the other hand it is possible to make the access to a cell more favourable when penaltyTime 11111. This is the case of a Microcell which has to gather more traffic than the pure radio conditions would allow. The point is however that Microcells are small and what rea