乒乓切換分析案例

案例1：‘章貢沙河華東物流城西景觀塔-FDD‘與‘章貢沙河華東物流城西景觀塔D’單日乒乓切換次數達到24.9萬次?；久Q本地基站標識本地小區(qū)標識目標基站標識目標小區(qū)標識移動國家碼移動網絡碼特定兩兩小區(qū)間用戶乒乓切換次數8FGZCX章貢沙河華東物流城西景觀塔-FDD3600882958488149958488-1490249886 核查互操作關系如下：切換方向事件A2A3A4連接態(tài)偏置37900->1300A3-883-31300->37900A4-78-964 根據防止乒乓條件參數設置，可知需X->Y切換事件Y->X切換事件防止乒乓條件（滿足其一即可）A3A4AA 帶入計算可得出：A2A以上均不滿足防止乒乓條件設置，例如‘章貢沙河華東物流城西景觀塔-FDD’電平為-85，‘章貢沙河華東物流城西景觀塔D’電平為-95時，終端將不停切換。 優(yōu)化措施：章貢沙河華東物流城西景觀塔D至FDD1800的A2修改成-104，此時：A2驗證效果：1、跟蹤8FGZCX章貢沙河華東物流城西景觀塔-FDD2，優(yōu)化切換門限后，乒乓切換次數明顯改善，總切換次數由日均81萬下降至日均20萬。但流量下降28GB，下行丟包率由0.06%改善至0.03%，其他指標正常。

8FGZCX章貢沙河華東物流城西景觀塔-FDD2：修改前后日期小區(qū)名稱無線接通率(%)無線掉線率(%)切換成功率(%)切換嘗試總次數切換失敗次數流量GBVoLTE上行丟包率(QCI=1)(%)VoLTE下行丟包率(QCI=1)(%)調整前2019/1/18FGZCX章貢沙河華東物流城西景觀塔-FDD299.93090.091499.978934978803416685.95240.02020.00652019/1/28FGZCX章貢沙河華東物流城西景觀塔-FDD299.92070.129699.981423482899815491.30410.01290.0052019/1/38FGZCX章貢沙河華東物流城西景觀塔-FDD299.91770.086699.980930283902216083.59030.01160.02242019/1/48FGZCX章貢沙河華東物流城西景觀塔-FDD299.94020.077599.978060876119616789.40820.0150.22862019/1/58FGZCX章貢沙河華東物流城西景觀塔-FDD299.95170.064399.981458580899415096.20.0220.03132019/1/68FGZCX章貢沙河華東物流城西景觀塔-FDD299.94650.069299.981559485680315894.50790.01760.0518調整前均值8FGZCX章貢沙河華東物流城西景觀塔-FDD299.9346170.086433399.980394581384115990.160480.01650.0576調整后2019/1/78FGZCX章貢沙河華東物流城西景觀塔-FDD299.93590.064299.9680273002539678.99490.01430.04572019/1/88FGZCX章貢沙河華東物流城西景觀塔-FDD299.88630.072899.96379962541419284.9310.01930.02612019/1/98FGZCX章貢沙河華東物流城西景觀塔-FDD299.96020.04799.94284341662109549.97720.04270.03342019/1/108FGZCX章貢沙河華東物流城西景觀塔-FDD299.97040.045699.9656261658235753.27330.02180.03512019/1/118FGZCX章貢沙河華東物流城西景觀塔-FDD299.97560.069999.95847181613366757.33880.01080.00712019/1/128FGZCX章貢沙河華東物流城西景觀塔-FDD299.96380.050499.94928521557737952.91920.01010.0253調整后均值8FGZCX章貢沙河華東物流城西景觀塔-FDD299.94870.058316799.95800882005898162.905730.01980.02878前后對比改善改善持平減少61W次改善下降28G持平改善

2

、目標乒乓小區(qū)章貢沙河華東物流城西景觀塔D2小區(qū)切換次數減少58萬次，流量增長17GB，下行丟包率0.26%改善至0.08%；其他指標正常。修改前后日期小區(qū)名稱無線接通率(%)無線掉線率(%)切換成功率(%)切換嘗試總次數切換失敗次數流量GBVoLTE上行丟包率(QCI=1)(%)VoLTE下行丟包率(QCI=1)(%)調整前2019/1/1章貢沙河華東物流城西景觀塔D299.95240.099499.981876966213812026.0310.00420.10682019/1/2章貢沙河華東物流城西景觀塔D299.95020.046499.974398773043218720.51040.00540.11082019/1/3章貢沙河華東物流城西景觀塔D299.98390.064299.965230271038624727.0350.00460.24132019/1/4章貢沙河華東物流城西景觀塔D299.99330.064699.980240264778012823.49060.00330.89162019/1/5章貢沙河華東物流城西景觀塔D299.94940.060199.98834036946998126.59280.00410.09132019/1/6章貢沙河華東物流城西景觀塔D299.9330.055699.985399172598510621.19250.0050.0958調整前均值章貢沙河華東物流城西景觀塔D299.9603670.0650599.9792476695236.66714424.142050.00440.2562調整后2019/1/7章貢沙河華東物流城西景觀塔D299.97990.070299.889959612359113661.10170.0170.08812019/1/8章貢沙河華東物流城西景觀塔D299.97510.059299.813844612731323757.64440.00790.05942019/1/9章貢沙河華東物流城西景觀塔D299.98070.044699.831969510057716933.15270.00850.06112019/1/10章貢沙河華東物流城西景觀塔D299.98910.078899.817972810438019032.52850.00830.11032019/1/11章貢沙河華東物流城西景觀塔D299.97330.048599.823582110713218932.61840.00970.08012019/1/12章貢沙河華東物流城西景觀塔D299.96780.055999.85197410673815834.78550.00750.109調整后均值章貢沙河華東物流城西景觀塔D299.977650.059533399.8382171111621.83317941.971870.00980.0846前后對比改善改善持平減少58W次持平增長17G持平改善

案例2：D/F共物理站址小區(qū)460-00-515845-10/460-00-588342-11每小時乒乓切換5萬次左右。SDATEAREAS_ENB_CELTCGIHO_ATTHO_SUCCEXECUTE_HO_FAIL乒乓切換次數2019021100YT588342_11460-00-515845-1052497524970509962019021100YT515845_10460-00-588342-1152730527246508922019021101YT588342_11460-00-515845-1045769457690448522019021101YT515845_10460-00-588342-1145688456817443052019021102YT588342_11460-00-515845-1044000439982432692019021102YT515845_10460-00-588342-1143677436761428302019021103YT588342_11460-00-515845-1047490474882466732019021103YT515845_10460-00-588342-1146851468501461302019021104YT588342_11460-00-515845-104175141752-1409822019021104YT515845_10460-00-588342-1141324413231407402019021105YT588342_11460-00-515845-1046186461851451952019021105YT515845_10460-00-588342-1145647456425443132019021106YT588342_11460-00-515845-1042795427950419662019021106YT515845_10460-00-588342-114267342529144414592019021107YT588342_11460-00-515845-1045017450134432502019021107YT515845_10460-00-588342-11448654485213424702019021108YT588342_11460-00-515845-1046570465637441342019021108YT515845_10460-00-588342-11467554674213430462019021109YT588342_11460-00-515845-1049765497641466502019021109YT515845_10460-00-588342-11499094989217449542019021110YT588342_11460-00-515845-1045239452363416382019021110YT515845_10460-00-588342-11460494603415411092019021111YT515845_10460-00-588342-1147196471906416412019021111YT588342_11460-00-515845-1045783457776415212019021112YT588342_11460-00-515845-10459124589913418012019021112YT515845_10460-00-588342-11465804649783413132019021113YT515845_10460-00-588342-11567255670718514232019021113YT588342_11460-00-515845-1055554555468511872019021114YT515845_10460-00-588342-11565705648387511332019021114YT588342_11460-00-515845-1055131551238507832019021115YT515845_10460-00-588342-11646546457084589352019021115YT588342_11460-00-515845-10635146350113581352019021116YT515845_10460-00-588342-11569455692520514582019021116YT588342_11460-00-515845-10557225571210504532019021117YT515845_10460-00-588342-11624556243421559102019021117YT588342_11460-00-515845-1060694606904558642019021118YT588342_11460-00-515845-1058154581477538742019021118YT515845_10460-00-588342-11595925955933537512019021119YT515845_10460-00-588342-11550245500618497852019021119YT588342_11460-00-515845-10538015378714489062019021120YT515845_10460-00-588342-11549115488823496772019021120YT588342_11460-00-515845-10540995408316489152019021121YT515845_10460-00-588342-11542265414878495892019021121YT588342_11460-00-515845-1053429534209486232019021122YT515845_10460-00-588342-11510695103633471022019021122YT588342_11460-00-515845-1050293502858459992019021123YT515845_10460-00-588342-11520335201617488682019021123YT588342_11460-00-515845-1051354513411348265核查兩小區(qū)切換參數如下：源小區(qū)源小區(qū)頻點目標小區(qū)目標小區(qū)頻點切換CIOA1/A2切換事件515845_1038400460-00-588342-11379000dB-78/-75A5-78/-106588342_1137900460-00-515845-10384002dB-90/-86A5-90/-100根據防止乒乓條件參數設置，可知該參數易造成乒乓切換：X->Y切換事件Y->X切換事件防止乒乓條件（滿足其一即可）A5A5AAAAAAAA實際如D頻段-100，F頻段-90時可造成終端不停乒乓切換。案例3.統(tǒng)計鷹潭乒乓切換TOP小區(qū)，460-00-965043-146與460-00-965043-156站內切換每個小時乒乓切換多達十萬次以上。SDATEAREAS_ENB_CELTCGIHO_ATTHO_SUCCEXECUTE_HO_FAIL乒乓切換次數2019021100YT965043_146460-00-965043-1561573401567435971560272019021100YT965043_156460-00-965043-146155995155910851553042019021101YT965043_146460-00-965043-1561483151480652501475842019021101YT965043_156460-00-965043-146147448147373751470072019021102YT965043_146460-00-965043-1561521561519402161515872019021102YT965043_156460-00-965043-146151485151445401510942019021103YT965043_146460-00-965043-1561426241424681561421682019021103YT965043_156460-00-965043-146141966141919471416742019021104YT965043_146460-00-965043-1561474081472291791467452019021104YT965043_156460-00-965043-146146801146729721466252019021105YT965043_146460-00-965043-1561507381505062321501772019021105YT965043_156460-00-965043-146149846149805411498902019021106YT965043_146460-00-965043-1561152911150632281146172019021106YT965043_156460-00-965043-146114247114194531142132019021107YT965043_146460-00-965043-1561076151073382771065512019021107YT965043_156460-00-965043-146106927106861661059022019021108YT965043_146460-00-965043-1561058511055263251044512019021108YT965043_156460-00-965043-146105120105036841035622019021109YT965043_146460-00-965043-1561221221214296931199402019021109YT965043_156460-00-965043-146120864120767971189512019021110YT965043_146460-00-965043-1561409931401538401382202019021110YT965043_156460-00-965043-1461396911395721191370712019021111YT965043_146460-00-965043-15613904713773613111358872019021111YT965043_156460-00-965043-1461371521370341181338342019021112YT965043_146460-00-965043-15612601212491011021232322019021112YT965043_156460-00-965043-1461241101239601501211322019021113YT965043_146460-00-965043-15612878912733914501257162019021113YT965043_156460-00-965043-1461264421263271151234632019021114YT965043_146460-00-965043-1561259521249809721234342019021114YT965043_156460-00-965043-1461241851240751101219282019021115YT965043_146460-00-965043-1561039971033326651019802019021115YT965043_156460-00-965043-146102798102725731008312019021116YT965043_146460-00-965043-156101176100297879989772019021116YT965043_156460-00-965043-146992189915761973812019021117YT965043_146460-00-965043-1568680886303505847172019021117YT965043_156460-00-965043-146857128564270838732019021118YT965043_146460-00-965043-1569304292434608913242019021118YT965043_156460-00-965043-146920949200589901972019021119YT965043_146460-00-965043-1568479184377414834902019021119YT965043_156460-00-965043-146839468385690827082019021120YT965043_146460-00-965043-1568458584070515833822019021120YT965043_156460-00-965043-146836408359347823312019021121YT965043_146460-00-965043-1568952789091436882782019021121YT965043_156460-00-965043-146888648881252876992019021122YT9