愛(ài)立信ffax應(yīng)用測(cè)試專題研究

概

愛(ài)立信FFAX應(yīng)用測(cè)試專題研愛(ài)立信RPMO（Real-TimePerformanceMonitoring，是愛(ài)立信BSCOSS上一個(gè)可選告，提供高效的操作方式，友好的用戶界面，對(duì)無(wú)線網(wǎng)絡(luò)進(jìn)行實(shí)時(shí)監(jiān)測(cè)。Celllevelsummary(Num.ofsamples,Mean,Std.Dev)RXlevel(Num.ofsamples,Mean,Std.Dev)CelllevelateachTAvalue(Num.ofsamples,為進(jìn)行網(wǎng)絡(luò)優(yōu)化FFAX功能的OSSFFAX供測(cè)試使用。本文對(duì)OSS上如何使用FFAX功能進(jìn)行詳細(xì)說(shuō)明并列舉了一些利用FFAX排查天線等無(wú)源器件問(wèn)題排FFAX功能使用說(shuō)打開EBAForGSM形界登陸南通OSS的應(yīng)用服務(wù)器，在CDE環(huán)境中，使用以下方法打開EventBasedApplicationforGSMONEPerformanceEventbaseApplicationfor查看網(wǎng)元RPMO連接狀EBAGSM，BSCRPMORPMOBSC創(chuàng)建CELL在使用RPMO功能前需要先創(chuàng)建CELLSET小區(qū)集，將需要收集的所有小區(qū)放入一個(gè)CELLSET中。如果使用TEMSVisualization后處理，一個(gè)CELLSET過(guò)500個(gè)小BSCNewCallSetCopycellOKFindFaultyAntennaExpert激活FindFaultyAntennaExpertFFAXCELLSETFindFaultyAntennaExpert查看FindFaultyAntennaExpertFindFaultyAntennaExpertReportOPENFaultyAntennaExpert輸出FindFaultyAntennaExpertFileExportTabdelimited輸 ：home\mrr（用戶名）\rpmo（自 關(guān)閉FindFaultyAntennaExpertFFAX報(bào)告原理及案例分FFAX量原FFAXCell-TRXFFAXStandardDeviationofRXLEVDifferenceFFAXFaultFFAXNumber(LossesinRF(LossesinRF(LossesinRF9(LossesinRF(Antenna7(Antenna(Antenna(LossesinRF(LossesinRF(Antenna(Antenna(Antenna(Antenna(Antenna(Antenna(Antenna(LossesinRF(Antenna3(Inconclusiveor3(Inconclusiveor3(InconclusiveorFFAXAverageRXLEVDifference：分集接收兩接收端的電平差值，差值大于絕對(duì)值大3FFAXStandardDeviationofRXLEVDifference：樣本中各數(shù)據(jù)與樣本平均數(shù)的差的數(shù)學(xué)上一般用E{[XE(X)]^2}來(lái)度量隨量X與其均值E(X)即期望的偏離程度，稱為X的FFAX優(yōu)化總體情利用FFAX量報(bào)告NTBSCA1&NTB0531兩個(gè)BSC483個(gè)小區(qū)中發(fā)現(xiàn)AverageRXLEVDifference值大于3且測(cè)量采樣點(diǎn)150011（FFAX只有在小區(qū)有話務(wù)時(shí)候但是在OSS上查看都沒(méi)有發(fā)現(xiàn)告警；為了驗(yàn)證FFAX報(bào)告的準(zhǔn)確性FFAX報(bào)告判斷的100%：FFAX優(yōu)化典型案例利用FFAX排查故障小區(qū)駐波比高與小區(qū)跳線接反問(wèn)。（D6859BAverageRXLEVDifference絕對(duì)值較大信息 。由上表可以看出，D水產(chǎn)品批發(fā)市場(chǎng)B（D6859B、D水產(chǎn)批發(fā)市場(chǎng)C（D6859C）兩個(gè)小TRX-119-0TRX-119-11FFAXAverageRXLEVDifference1OSSRXMFPD6859BD6859C狀態(tài)正常，DXUOPERATION綠燈長(zhǎng)亮，TRXCOPERATION長(zhǎng)亮，沒(méi)有明顯的硬件故障，OMTB、CSSIAB811。高，用sitemaster測(cè)得C小區(qū)兩條天饋的駐波比值1.45以上1.5，都是位于2.81.3依照C小區(qū)/的處理方法處理后，B小區(qū)的駐波比值也在1.3左右。（VSWR激活B、C區(qū)，OMTSSIAB8左右，沒(méi)有好轉(zhuǎn)，懷疑是否小區(qū)間饋線接交B小區(qū)的一根跳線拆掉C2線中的一根接到B小區(qū)上，B激活后測(cè)得SSIAB最大值為3，較之前有很大改善。BSC測(cè)得小區(qū)正常，沒(méi)有出現(xiàn)Antennadiagrammismatch。C小區(qū)的一根跳線拆掉，將原B區(qū)的2跳線中的一根接到C小區(qū)上，C區(qū)激活后測(cè)得SSIAB在0~2之間BSC測(cè)得小區(qū)正常也沒(méi)有出現(xiàn)Antennadiagrammismatch。mismatch該之所以沒(méi)有出現(xiàn)分集接收告警，是因?yàn)橹械腁ntennaSupervisionParameters12dBB、CSSIAB1012，在站上做了個(gè)測(cè)試，將警門限值設(shè)為6dB時(shí)，會(huì)出現(xiàn)告警。調(diào)整后D產(chǎn)品批發(fā)市場(chǎng)B（D6859B）小區(qū)TRX-119-0TRX-119-3FFAXAverageRXLEVDifference測(cè)試絕對(duì)值均低于門限；D批發(fā)市場(chǎng)C（D6859C）的FFAXAverageRXLEVDifference，此類問(wèn)題之所以頻繁出現(xiàn)是由于施工期間工藝差建議裝站過(guò)程中一定要與實(shí)際Sitemaster，F(xiàn)FAX排查小區(qū)饋線進(jìn)CellTRXofRXLEVFFAXFaultFFAXNumber(LossesinRF(LossesinRF9(LossesinRFCellTRXofRXLEVFFAXFaultFFAXNumber(Inconclusiveorno(Inconclusiveorno(Inconclusiveorno(InconclusiveornoFFAX小區(qū)跳線故障描述：D南通節(jié)制閘C（D6071C）測(cè)試FFAXAverageRXLEVDifference絕對(duì)3，如下表所示：由上表可以看出，D節(jié)制閘C（D6071C）小區(qū)TRX-350-6TRX-350-11大部分載波FFAXAverageRXLEVDifference1OSSRXMFPD6071C狀態(tài)正常，DXUOPERATION綠燈長(zhǎng)亮，TRXCOPERATION硬件故障，OMT測(cè)得CSSIA-B710。BCBCDUSSIA-B3CCBCDUSSIA-B7BSSIA-BBBCCDUSSIA-B3Antennadiagrammismatch。B、C小區(qū)的CDU0DTRU7DTRUDTRUAntennadiagrammismatch。FFAXAverageRXLEVDifference種潛在的問(wèn)題是影響網(wǎng)絡(luò)質(zhì)量的重要原因之一，F(xiàn)FAXFFAX排查天饋隱性故FFAX，D60071BFFAXAverageRXLEVDifferenceCellTRXFFAXStandardDeviationofRXLEVDifferenceFFAXFaultFFAXNumberof(LossesinRF(Antenna(AntennaCellTRXFFAXStandardDeviationofRXLEVDifferenceFFAXFaultFFAXNumber(LossesinRF(Antennadiagram(LossesinRFCellTRXFFAXStandardDeviationofRXLEVDifferenceFFAXFaultFFAXNumber(LossesinRF(Antennadiagram(LossesinRF(Inconclusiveorno(Inconclusiveorno0(Inconclusiveorno6(Inconclusiveorno進(jìn)行復(fù)位操作后，F(xiàn)FAXAverageRXLEVDifferenceD60071B小區(qū)，A小區(qū)問(wèn)題，如下CellTRXeFFAXStandardDeviationofFFAXFaultFFAXNumber0(Inconclusiveorno(Inconclusiveorno(Inconclusiveorno(Inconclusiveorno(Inconclusiveorno(Antennadiagram(Inconclusiveorno(LossesinRF(LossesinRF9(LossesinRF(LossesinRFFFAX報(bào)告排查出合路器型號(hào)不匹配問(wèn)故障描述：勞動(dòng)局（室分（69083A）測(cè)試FFAXAverageRXLEVDifference絕對(duì)3，如下表所示：（69083A）FFAXAverageRXLEVDifference（69083AOSSRXBLITRX-205-2（69083A3.1（69083A）（69083A900MHZ5、合路器更換后，測(cè)試FFAXAverageRXLEVDifference絕對(duì)正常，測(cè)量結(jié)果如（69083A）FFAX報(bào)告排查小區(qū)跳線和饋線間接口連接不規(guī)故障描述：任港村村委會(huì)B（60146B）測(cè)試FFAXAverageRXLEVDifference絕對(duì)3，如下表所示：AverageRXLEVDifference任港村村委會(huì)B（60146B）和任港村村委會(huì)C（60146C）天饋和跳線均互換后，F(xiàn)FAXAverageRXLEVDifference60146B60146C60146BFFAXAverageRXLEVDifferenceBFFAXFFAX排查小區(qū)RX隱性故故障描述：光明C（609C）測(cè)試FFAXAverageRXLEVDifference絕對(duì)值超過(guò)3，首先確認(rèn)是否有載頻問(wèn)題邁步排查，通過(guò)RXBLI閉掉RXOTRX-4、RXOTRX-5，通過(guò)FFAXAverageRXLEVDifferenceRXOTRX-4、RXOTRX-5現(xiàn)將RXOTRX-4RXOTRX-5對(duì)應(yīng)的RX換后，RXOTRX-