专业实务 | 第12章：LTE 无线网络优化
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">红松教育</p>
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">· 本章目录 ·</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.1 LTE 无线网络优化概述</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.2 VoLTE 网络优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.3 大话务场景优化设计</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.4 室内覆盖优化设计</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.5 高铁场景优化设计</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.1 LTE 无线网络优化概述</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">LTE无线网络优化流程</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">工程参数和天馈参数核查</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">单站优化、分簇优化、分区优化、<span style="color: black;">区别</span>厂商边界优化、全网优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">工程质量问题则建设单位整改</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">工程优化质量应由建设单位与优化单位联合确认</p>
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">LTE无线网络优化流程</p>
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">重点</span>优化内容</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(1)PCI<span style="color: black;">恰当</span>规划</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">无冲突(collision-free)原则</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">无混淆(confusion-free)原则</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">模3后的余数<span style="color: black;">不可</span>相等</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(2)干扰排查</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">系统内干扰：邻区同频干扰</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">系统间干扰：与WLAN间的干扰、与中国移动多<span style="color: black;">媒介</span>广播(CMMB)间的干扰、与GSM间的干扰、与TD-SCDMA间的干扰、与其他系统的干扰等</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(3)天线的<span style="color: black;">调节</span>及覆盖优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">最重要的一环</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">调节</span>天线参数及功率设置</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(4)邻区规划及优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">邻区<span style="color: black;">太多</span>，切换不<span style="color: black;">即时</span>、误切换及重选慢等</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">邻区过少，切换问题和孤岛效应等</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">邻区信息错误影响网络的正常切换</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(5)系统参数</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">调节</span>覆盖参数和切换<span style="color: black;">关联</span>配置参数</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">CRS发射功率、信道的功率配置、PRACH信道格式。切换<span style="color: black;">关联</span>配置参数<span style="color: black;">重点</span>有：事件触发滞后因子(Hysteresis)、事件触发<span style="color: black;">连续</span>因子(TimetoTrig)、邻小区个性化偏移(QoffsetCell)、T304<span style="color: black;">按时</span>器、T310<span style="color: black;">按时</span>器。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">网优<span style="color: black;">调节</span>的<span style="color: black;">重点</span>手段</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">a.天线下倾角：过覆盖、弱覆盖、导频污染、过载等场景。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">b.天线方向角：过覆盖、弱覆盖、导频污染、覆盖盲区、过载等场景。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">c.导频功率：过覆盖、导频污染、过载等场景。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">d.天线高度：过覆盖、弱覆盖、导频污染、覆盖盲区等场景。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">e.天线位置：过覆盖、弱覆盖、导频污染、覆盖盲区等场景。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">f.天线类型：导频污染、弱覆盖等场景。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">g.<span style="color: black;">增多</span>塔放：远距离覆盖场景。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">h.站点位置：导频污染、弱覆盖、覆盖不足等场景(部分场景应<span style="color: black;">思虑</span><span style="color: black;">搬家</span>站址)</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.2 VoLTE 网络优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">VoLTE基本概念</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/pgc-image/55d6f543cb0b420f910ccf00f8e4c72c~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1725622299&x-signature=RS7si4PktNl6WvaNhLXnvTY2kRY%3D" style="width: 50%; margin-bottom: 20px;">
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> VoLTE 网络优化</p>
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">VoLTE网络优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">基本</span>优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">高MOS值：优化SINR、降低BLER、降低频繁切换</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">邻区优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">恰当</span>配置GSM邻区关系是优化的前提。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(1)GSM邻区的BCCH在GERAN频点列表中。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(2)直接继承共天线TDS小区的GSM邻区。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(3)4G与2G共站，配置共站小区及同向2G邻区。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(4)4G仅与3G共站，配置同向共站小区2G邻区。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(5)4G站点新建站，优先添加<span style="color: black;">第1</span>圈2G邻区：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">①天线方向指向本小区的2G小区;</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">②方向<span style="color: black;">方向</span>在60°之内<span style="color: black;">近期</span>的2个候选邻区。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(6)4G与2G共室分，配置该2G室分小区及其邻区。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(7)基于B2<span style="color: black;">测绘</span>报告进行邻区优化。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">时延优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">第1</span>条随机接入到SIP 180 Ring的时间差</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">①避免被叫无线环境差;</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">②关注UPDATE和MODIFY过程。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">③优化网格切换次数</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">RTP丢包率优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">①影响MOS</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">②误帧率(FER)<span style="color: black;">少于</span>1%</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">③初传误块率(BLER)为10%</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.3 大话务场景优化设计</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">大话务场景的网络建维策略</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(1)<span style="color: black;">按照</span><span style="color: black;">区别</span>场景制定组网策略</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(2)站点布局</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(3)设备选型</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(4)频率干扰排查</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(5)跟踪区优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(6)多载波组网</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">大话务场景的网络优化策略</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">传输资源、功率资源、PRB资源、硬件处理能力</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(1)小区<span style="color: black;">选取</span>及重选</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(2)EPC<span style="color: black;">关联</span>参数<span style="color: black;">调节</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(3)UE不活动<span style="color: black;">按时</span>器优化<span style="color: black;">调节</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(4)基站算法开关<span style="color: black;">调节</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(5)AQM算法参数<span style="color: black;">调节</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(6)RRC连接拒绝后UE等待接入时间参数优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(7)竞争冲突<span style="color: black;">处理</span>参数优化<span style="color: black;">调节</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(8)<span style="color: black;">理学</span>信道的拥塞<span style="color: black;">掌控</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(9)DRX参数<span style="color: black;">调节</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(10)PDCP丢包<span style="color: black;">按时</span>器参数<span style="color: black;">调节</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.4 室内覆盖优化设计</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">室内外一体化覆盖<span style="color: black;">办法</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">小区外远处打</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">裙楼内打</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">从小区核心区由内向外打</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">室分外打</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">灯杆<span style="color: black;">选定</span>覆盖、小微站挂墙<span style="color: black;">选定</span>覆盖</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">引入室分</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">典型的室内覆盖<span style="color: black;">处理</span><span style="color: black;">方法</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">室外宏站<span style="color: black;">处理</span>室内覆盖</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">分布式天线系统DAS方式</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">12.5 高铁场景优化设计</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">高铁覆盖参数优化<span style="color: black;">调节</span><span style="color: black;">意见</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(1)功率：PRS=10×log(单通道功率×1000mW/子裁波总数)+3</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(2)PCI规划</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(3)PRACH规划</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(4)邻区规划</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(5)TA规划</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(6)高速标识规划</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(7)调度规划</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(8)邻区配置</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(9)站台小区参数优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(10)3G/4G互操作</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(11)天线设备选型及站址<span style="color: black;">选取</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">(12)RRU/BBU选址</p>
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同意、说得对、没错、我也是这么想的等。 论坛是一个舞台，让我们在这里尽情的释放自己。 在遇到你之前，我对人世间是否有真正的圣人是怀疑的。 真情实感，其含义为认真了、走心了的意思，是如今的饭圈常用语。 感谢你的精彩评论，带给我新的思考角度。
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