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宁波LTE项目SERVICEEXCELLENCEGN口低速率小区优化研究专题第1页共18页1.典型案例简介1.1弱覆盖导致低速率N747741宁波慈溪铜店弄站点最近统计为低速率小区,统计分析其他各项指标正常,只有1与3扇区RSRP大于等于-110占比低于80%,低速率原因归类为弱覆盖,具体见下表:EnodeBID小区名称最近出现日期RSRP大于等于-110占比(%)原因类别解决方案403249N747741宁波慈溪铜店弄-12015-7-1977.53弱覆盖添加邻区N745323宁波慈溪高王,最小接入电平由-128调整至-124,由于周边无异频站点,A2起测门限由-95调整至-120,A2停测门限由-91调整至-100403249N747741宁波慈溪铜店弄-22015-7-1997.74由于周边无异频站点,A2起测门限由-95调整至-120,A2停测门限由-91调整至-100403249N747741宁波慈溪铜店弄-32015-7-1961.05弱覆盖最小接入电平由-128调整至-124,由于周边无异频站点,A2起测门限由-95调整至-120,A2停测门限由-91调整至-1007.22号优化措施实施后,前后平均页面下载速率对比如下:时间地市制式ENODEB平均页面下载速率(Kbps)ENODEB速率劣化区间比%2015-07-11宁波4G4032491532.86202015-07-12宁波4G4032491847.97202015-07-13宁波4G4032491376.86802015-07-14宁波4G4032491409.06802015-07-15宁波4G4032491508.75702015-07-16宁波4G4032491576.07102015-07-17宁波4G4032491674.14202015-07-18宁波4G4032491670.05102015-07-19宁波4G4032491755.26602015-07-20宁波4G4032491658.35202015-07-21宁波4G4032491647.31102015-7-22措施实施宁波4G4032491680.26102015-07-23宁波4G4032491847.6102015-07-24宁波4G4032491850.51202015-07-25宁波4G4032492211.05102015-07-26宁波4G4032492103.9202015-07-27宁波4G4032491775.49102015-07-28宁波4G4032491958.87102015-07-29宁波4G4032491941.600措施实施前速率均值1605.15措施实施后速率均值1955.58变化量350.43备注:速率劣化区间比大于等于50%,统计为低速率站点。第2页共18页7.22号优化措施实施后,截止到7.29号该站点劣化区间占比一直低于50%,未再成为低速率小区站点。措施实施后,平均页面下载速率有效提升350.43Kbps。1.2故障导致低速率N845117宁波慈溪杭州湾沁园水处理厂由于故障,导致2与3扇区小区不可用,造成1扇区的RSRP大于等于-110占比只有62%。EnodeBID小区名称进入低速率站点时间原因类别解决方案738091N845117宁波慈溪杭州湾沁园水处理厂-12015-6-28738091N845117宁波慈溪杭州湾沁园水处理厂-22015-6-28故障故障处理738091N845117宁波慈溪杭州湾沁园水处理厂-32015-6-28故障故障处理7.7号故障恢复后,前后平均页面下载速率对比如下:时间地市制式ENODEB平均页面下载速率(Kbps)ENODEB速率劣化区间比%2015-06-25宁波4G7380911719.9902015-06-26宁波4G7380911857.8802015-06-27宁波4G7380912499.9502015-06-28出现故障宁波4G7380911212.90902015-06-29宁波4G7380911874.45302015-06-30宁波4G7380911709.08702015-07-01宁波4G7380911599.52502015-07-02宁波4G7380911856.19102015-07-03宁波4G7380911464.44802015-07-04宁波4G7380911476.12102015-07-05宁波4G7380911220.68802015-07-06宁波4G7380911482.64602015-7-7故障恢复宁波4G7380911795.7402015-07-08宁波4G7380911838.4502015-07-09宁波4G7380911830.5102015-07-10宁波4G7380912026.7102015-07-11宁波4G7380912433.6502015-07-12宁波4G7380911842.5302015-07-13宁波4G7380912086.4602015-07-14宁波4G7380911974.1502015-07-15宁波4G7380911743.7402015-07-16宁波4G7380912047.2802015-07-17宁波4G7380912294.5002015-07-18宁波4G7380911869.73102015-07-19宁波4G7380912033.870备注:速率劣化区间比大于等于50%,统计为低速率站点。第3页共18页7.7日故障恢复后,相比故障期间速率有明显提升。截止7.19日未再统计为低速率站点。1.3干扰导致低速率N749922宁波鄞州广电大学D2/3/5/6小区长期存在干扰,导致该站点被统计为低速率站点,后来经过干扰排查,最终锁定为学校里开的干扰器导致,协调关闭后,站点恢复正常。EnodeBID小区名称NPI原因类别解决方案738256N749922宁波鄞州广电大学D-1738256N749922宁波鄞州广电大学D-2-104干扰干扰排查738256N749922宁波鄞州广电大学D-3-103干扰干扰排查738256N749922宁波鄞州广电大学D-4738256N749922宁波鄞州广电大学D-5-105干扰干扰排查738256N749922宁波鄞州广电大学D-6-101干扰干扰排查8.2号干扰消失后,前后平均页面下载速率对比如下:时间地市制式ENODEB平均页面下载速率(Kbps)ENODEB速率劣化区间比%2015-07-21宁波4G7382561413.99802015-07-22宁波4G7382561216.14802015-07-23宁波4G7382561755.2402015-07-24宁波4G7382561580.17102015-07-25宁波4G7382561005.09602015-07-26宁波4G7382561326.18302015-07-27宁波4G7382561510.92302015-07-28宁波4G7382561634.41202015-07-29宁波4G7382561254.50302015-07-30宁波4G7382561956.42202015-07-31宁波4G7382561247.75602015-08-01宁波4G738256945.85502015-08-02干扰消除宁波4G7382562027.08402015-08-03宁波4G7382562269.05102015-08-04宁波4G7382562216.9902015-08-05宁波4G7382561957.64102015-08-06宁波4G7382562022.13202015-08-07宁波4G7382562987.34302015-08-08宁波4G7382561937.3720干扰消除前速率均值1403.89干扰消除后速率均值2231.75变化量827.87备注:速率劣化区间比大于等于50%,统计为低速率站点。8.2号优化措施实施后,截止到8.8号该站点劣化区间占比一直低于50%,未再成为低速率小区站点。干扰消失后,平均页面下载速率有效提升827.87Kbps。第4页共18页1.4容量导致低速率NBYZ万里东FHTL站点各项指标基本正常,但是RRC平均连接用户数较多,共站的D频段站点反而较少,通过开启连接态与空闲态的均衡算法,有效分流用户数,从而解决低速率小区。EnodeBID小区名称RRC平均连接用户数原因类别解决方案403946NBYZ万里东FHTL-155容量用户数均衡403946NBYZ万里东FHTL-264容量用户数均衡403946NBYZ万里东FHTL-347容量用户数均衡7.3号开启连接态与空闲态负载均衡算法后,站点平均用户数下降明显,未再成为低速率站点。时间地市制式ENODEB平均页面下载速率(Kbps)ENODEB速率劣化区间比%站点平均用户数2015-07-01宁波4G4039461,213.52701642015-07-02宁波4G4039461,334.01301662015-07-03开启连接态与空闲态负载均衡算法宁波4G4039461,233.87501312015-07-04宁波4G4039461,733.980732015-07-05宁波4G4039461,883.550822015-07-06宁波4G4039461,907.70852015-07-07宁波4G4039462,331.810632015-07-08宁波4G4039462,125.570372015-07-09宁波4G4039461,569.30202015-07-10宁波4G4039461,794.55019备注:速率劣化区间比大于等于50%,统计为低速率站点。1.5传输导致低速率-12015-7-15晚上21:00用户投诉江北玛瑙D/F,桔子酒店D/F,NBJB槐树公寓ESTL业务无法使用,后来定位到是由于传输问题导致这些站点业务不正常,由于前期优化GN口低速率小区,一直没有由于传输问题导致的低速率小区出现,这些站点传输出现问题,可以拿来进行分析对GN口WEB页面的影响。因此,选择了江北玛瑙D作为典型站点进行分析。出现投诉后,后台明显异常的KPI指标如下:SDATESHOURENBIDSITENAMEPDCP_SDU_VOL_KBYTECOMPL_RACH_STP_SRRRC_EST_ATTPDCP_DATA_RATE_MAX_DL2015071516402071N848781NBJBManaoD15638647.412051357432015071517402071N848781NBJBManaoD19967345.742517332452015071518402071N848781NBJBManaoD26690144.592599265172015071519402071N848781NBJBManaoD16845340.941960230472015071520402071N848781NBJBManaoD18964341.628341869320150715传输出现问题21402071N848781NBJBManaoD2369523.84165862772015071616402071N848781NBJBManaoD1191232.36129935672015071617402071N848781NBJBManaoD2576232.41182733282015071618402071N848781NBJBManaoD2243133.6118601504第5页共18页2015071619402071N848781NBJBManaoD1833229.49129650972015071620402071N848781NBJBManaoD3655326.121310687920150717传输问题解决17402071N848781NBJBManaoD3565245
本文标题:GN口低速率小区典型案例-李海江
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