/單項(xiàng)選擇題（10×1＝10分）下面哪個(gè)指標(biāo)對(duì)TCHDCR有干脆的影響：BERTCHFERSACCHFERBLER下面哪條消息是在SDCCH信道上進(jìn)行傳送的：CHANNEL_REQUESTALERTINGCM_SERVICE_REQUESTPAGING_REQUEST在通話過(guò)程中，運(yùn)用DTX和不運(yùn)用DTX，分別有多少個(gè)TDMA幀相關(guān)值被平均采樣做為測(cè)量報(bào)告結(jié)果?51和20426和10412和10426和26下列不須要占用SDCCH的活動(dòng)為:SMS被叫加密切換小區(qū)選擇C1算法跟以下那個(gè)因素有關(guān)?Rxlev_minMS_Txpwr_MaxRxlev_Access_MinBS_Txpwr_Max在執(zhí)行DirectRrtry功能時(shí)，Layer3message出現(xiàn)哪一條信令?ImmediateassignmentAssignmentcommandHandovercommandConnect為避開(kāi)因過(guò)多跨越LAC的小區(qū)重選而造成的SDCCH的堵塞,我們將和該小區(qū)有切換關(guān)系且和之LAC不同的相鄰小區(qū)的哪個(gè)參數(shù)提高?T3212b.Cell_Reselect_Hysteresisc.Cell_Reselect_offsetd.Rxlev_Access_Min“CHANNELREQUEST”這個(gè)消息是在_____信道上發(fā)送的a.RACHb.AGCHc.PCHd.SDCCH話務(wù)量的計(jì)算接受以下那個(gè)測(cè)量的數(shù)據(jù)？resourceaccessmeasurementresourceavailabilitymeasurementtrafficmeasurementavailabilitymeasurement手機(jī)的最大放射功率是2W，即33dBm,當(dāng)手機(jī)功率從2W下降到0.1W時(shí)，我們說(shuō)手機(jī)功率下降了______dB3132333多項(xiàng)選擇題（10×2＝20分）小區(qū)的覆蓋半徑和以下哪些因素有關(guān)：天線類(lèi)型天線位置四周環(huán)境運(yùn)用的頻帶（450,900,1800MHz）跳頻對(duì)網(wǎng)絡(luò)的好處在于：增加網(wǎng)絡(luò)容量抗多徑效應(yīng)頻率分集干擾分集抗快衰落抗慢衰落在接受基帶跳頻的網(wǎng)絡(luò)中，須要規(guī)劃以下哪些跳頻相關(guān)參數(shù)：HSN1HSN2MALMAIOHOPPaginggroup的數(shù)量和下面哪些參數(shù)有關(guān)：MFRAGBCCHtypeSLORET以下哪些是BSC的功能功率限制切換限制信道編碼和交織無(wú)線信道資源支配以下哪些是BTS的功能GMSK調(diào)制加密切換的判決和MS同步傳送測(cè)量數(shù)據(jù)至BSC信道編碼以下哪些號(hào)碼是用于識(shí)別手機(jī)的？MSISDNIMSIMSRNCGIBSICTMSIIMEI以下哪些參數(shù)會(huì)影響手機(jī)的小區(qū)重選過(guò)程：RXPHYSTEOPETQUA手機(jī)優(yōu)先級(jí)BAR小區(qū)是否被BAR以下哪些方法可降低小區(qū)的話務(wù)信道擁塞：擴(kuò)容改頻下壓天線俯仰角降低擁塞小區(qū)切出門(mén)限調(diào)整擁塞小區(qū)和鄰區(qū)參數(shù)PMRG、LMRG值啟用DR以下哪些緣由的切換是靠周期性檢查而不是通過(guò)切換門(mén)限的比較來(lái)觸發(fā)的：QualityLevelDistanceUmbrellaPowerbudgetInterferencetraffic填空題（20×0.5＝10分）自動(dòng)頻率規(guī)劃中，建立干擾矩陣是基于DAC和CF測(cè)量MS,BTS,BSC,TC,MSC之間的接口分別是Air，Abis，Ater，A一個(gè)TDMA幀的周期是4.615，每個(gè)TCH幀的周期是120，每個(gè)SACCH幀的周期是480用于查看GSM相關(guān)測(cè)量狀態(tài)的MML叮囑是ZTPI:MEAS,，查看GPRS/EDGE相關(guān)測(cè)量狀態(tài)的MML是ZTPI:GPRS,，查看timer設(shè)置狀態(tài)的MML是ZEGO，查看feature開(kāi)啟狀態(tài)的MML是ZWOI給下列各種功控類(lèi)型按從高到低的優(yōu)化級(jí)排序CBDAPCduetoUpperlevelthresholds(ULandDL)PCduetoLowerlevelthresholds(ULandDL)PCduetoLowerqualitythresholds(ULandDL)PCduetoUpperqualitythresholds(ULandDL)請(qǐng)給出網(wǎng)管系統(tǒng)三種主要的功能無(wú)線網(wǎng)絡(luò)告警監(jiān)控，測(cè)量監(jiān)控，規(guī)劃數(shù)據(jù)的輸出入請(qǐng)列出三種發(fā)覺(jué)網(wǎng)絡(luò)中硬件問(wèn)題的途徑告警，載頻質(zhì)量，TCH/SDCCH可用率計(jì)算題（6＋4＋6＋6＝22分）某地區(qū)網(wǎng)絡(luò)中有一新建開(kāi)發(fā)區(qū)，面積40KM2，預(yù)料人口80000人，手機(jī)用戶滲透率約80％，依據(jù)無(wú)線鏈路預(yù)算的結(jié)果該地區(qū)平均小區(qū)覆蓋面積0.5KM2，話務(wù)模型預(yù)料每用戶忙時(shí)通話時(shí)長(zhǎng)90S，可用頻譜帶寬為15.6MHz，請(qǐng)按GOS=2%，頻率復(fù)用接受MRP方式（BCCH3*6，TCH3*5）小區(qū)覆蓋=40/0.5=80容量需求=80000*80%*90/3600=1600小區(qū)容量=容量需求/每小區(qū)的容量=1600/28.3=56.5428.3=每小區(qū)載頻數(shù)=(15.6/0.2-3*6)/(3*5)+1=5每小區(qū)容量=28.3erl因此我們須要80個(gè)新小區(qū)。請(qǐng)依據(jù)圖中數(shù)據(jù)計(jì)算：要保持上下行鏈路平衡時(shí)基站的TXPOWER，并計(jì)算出無(wú)線鏈路的最大空中損耗。(4分)路徑損耗：=33-4+4+16-3.5-(-104)=149.5放射功率-3-3.5+16-149.5-4=-102——>=-102-(-3-3.5+16-149.5-4)=42上行算路徑損耗，下行假定網(wǎng)絡(luò)中IMSI尋呼的比例為20％，請(qǐng)計(jì)算當(dāng)把參數(shù)AG=1,combinedBCCH調(diào)整為AG=2，non-combinedBCCH時(shí)，網(wǎng)絡(luò)的尋呼容量增加的比例？（6分）尋呼容量=尋呼消息/尋呼擁塞*尋呼擁塞/s*3600當(dāng)AG=1時(shí)，combinedBCCH尋呼擁塞/s=（3-1）/0.235=2/0.235當(dāng)AG=2時(shí)，non-combinedBCCH Pagingblock/s=(9-2)/0.235=7/0.235Sotheansweris7/2=350%已知某網(wǎng)絡(luò)話務(wù)模型相關(guān)信息如下：（6分）請(qǐng)據(jù)此確定當(dāng)小區(qū)載頻數(shù)為1，6時(shí)分別須要配置的SDCCH子時(shí)隙數(shù)。WhenTRX=1Celltraffic=2.95erlSubs=2.95/0.025Sdccherl=sdccherl/subs*subs=[(1.5*3+1*3+0.15*3+0.5*2)*2.95/0.025]/3600=0.29erlRefertoerlangBtable:itneed3sdcchsubchannelsWhenTRX=6Celltraffic=34.682erlSubs=34.682/0.025Sdccherl=sdccherl/subs*subs=[(1.5*3+1*3+0.15*3+0.5*2)*34.682/0.025]/3600=3.41erlRefertoerlangBtable:itneed8sdcchsubchannels簡(jiǎn)答題（6＋3＋3＋3＋6＝21分）請(qǐng)簡(jiǎn)要描述（或圖示）一下網(wǎng)絡(luò)規(guī)劃、日常優(yōu)化、集中優(yōu)化各自的工作流程（6分）網(wǎng)絡(luò)規(guī)劃流程：Preplanningsiteselection/surveyfrequency/adjacentcell/parameterplanningonairevaluationandaudit日常優(yōu)化流程：KPI指標(biāo)——>發(fā)覺(jué)網(wǎng)絡(luò)問(wèn)題（NMS，DT/CQT,用戶投訴）——>分析問(wèn)題——>解決方案和修改申請(qǐng)——>監(jiān)控和評(píng)估——>記錄報(bào)告。集中優(yōu)化流程：網(wǎng)絡(luò)審查——>KPI指標(biāo)——>組織和運(yùn)作——>實(shí)施優(yōu)化——>追蹤監(jiān)控——>記錄報(bào)告提交。請(qǐng)列出幾種進(jìn)行覆蓋調(diào)整和優(yōu)化的手段（3分）影響尋呼成功率的因素有哪些？（3分）請(qǐng)列出優(yōu)化SDCCH擁塞小區(qū)的幾種方法（3分）請(qǐng)分別列出網(wǎng)管統(tǒng)計(jì)、路測(cè)和撥打測(cè)試中幾種主要的性能指標(biāo)（6分）綜合題（9＋8＝17分）下圖為某地區(qū)網(wǎng)絡(luò)的基站分布和配置，請(qǐng)接受MRP頻率復(fù)用技術(shù)為該網(wǎng)絡(luò)確定頻率支配方案和復(fù)用模型，并為基站A、B支配頻率。（8分）ABAB下面的測(cè)試報(bào)告從BTS提交給BSC，包括服務(wù)小區(qū)和相鄰小區(qū)的測(cè)量結(jié)果：服務(wù)小區(qū)測(cè)量報(bào)告：（9分）MeasurmentReport1st2nd3rd4th5th6th7th8th9th10th11th12th13th14thULRxLev353634322520211816141210109DTXUsed00011100111000HoThresholdLevUL=-90dBmWindowSize=3,Weighting=2Px=2,Nx=3btsMeasAver(BMA)=1(nopre-processinginBTS)相鄰小區(qū)測(cè)量報(bào)告：1st2nd3rd4th5th6th7th8thAdj1-65-67-71-69-72-70-73-71Adj2-73-75-74-75-76-77-75-77Adj3-770-80-79-81-790-80Adj4-85-83-87-88-840-86-87Adj5-90-94-91-90-95-93-92-90Adj6-97-99-98-99-96-9700allAdjacentCellsAveraged=NOnumberOfZeroResults=2averagingWindowSizeAdjCell=8服務(wù)小區(qū)對(duì)各鄰區(qū)參數(shù)設(shè)置如下：SLLMRGPRI(Priority)OF(hoLoadFactor)BLT(btsLoadThreshold)BTSloadAdj1-9533180%85%Adj2-9534285%90%Adj3-9533185%70%Adj4-9564280%70%Adj5-9533175%70%Adj6-9533180%70%請(qǐng)依據(jù)上述已知條件推斷：什么時(shí)候，MS將觸發(fā)切換候選目標(biāo)小區(qū)的電平、優(yōu)先級(jí)分別如何？最終的目標(biāo)小區(qū)是哪個(gè)鄰區(qū)？附：ErlangBtableSDCCH信道配置策略 單項(xiàng)選擇題CCCDCCBABB多項(xiàng)選擇題EFGHABCDEABEABCABDABDEFABCFGABCDEFACDEFDE填空題DAC,CFUm(Air),Abis,Ater,A4.615,120,480ZTPI:MEAS,ZTPI:GPRS,ZEGO,ZWOICBDARNW,ALARM,MEASURMENTADMIN,PLANNINGDATAIMPORT/EXPORTALARM,TRXQUALITY,TCH/SDCCHAVAILABLE計(jì)算題Coveragecells=40/0.5=80Capacitycells=capacityrequirement/capacitypercell=1600/28.3=56.54capacityrequirement=80000*80%*90/3600=1600TRXspercell=(15.6/0.2-3*6)/(3*5)+1=5capacitypercell=28.3erlsoweneed80newcells.Pathloss=33-4+4+16-3.5-(-104)=149.5TXPOWER-3-3.5+16-149.5-4=-102èTXPOWER=-102-(-3-3.5+16-149.5-4)=42Pagingcapacity=pagingmsg/pagingblock*pagingblock/s*3600WhenAG=1,combinedBCCHPagingblock/s=(3-1)/0.235=2/0.235WhenAG=2,non-combinedBCCH Pagingblock/s=(9-2)/0.235=7/0.235Andpagingmsg/pagingblockisnotrelatedwiththeparametersAGandBCCHtype,Sotheansweris7/2=350%WhenTRX=1Celltraffic=2.95erlSubs=2.95/0.025Sdccherl=sdccherl/subs*subs=[(1.5*3+1*3+0.15*3+0.5*2)*2.95/0.025]/3600=0.29erlRefertoerlangBtable:itneed3sdcchsubchannelsWhenTRX=6Celltraffic=34.682erlSubs=34.682/0.025Sdccherl=sdccherl/subs*subs=[(1.5*3+1*3+0.15*3+0.5*2)*34.682/0.025]/3600=3.41erlRefertoerlangBtable:itneed8sdcchsubchannels簡(jiǎn)答題Networkplanningprocess:Preplanningàsiteselection/surveyàfrequency/adjacentcell/parameterplanningàonairàevaluationandauditDailyoptimization:KPItargetàfindnetworkproblem(NMS,DT/CQT,endusercomplaint)àanalysisproblemàsolutionandchangerequestàmonitorandevaluationàrecordandreportIntensiveoptimization: NetworkauditàKPItargetàorganizationandoperationàoptimizationactivitiesàmonitoringàrecordandreportPhysicaladjustCellselection/reselectionparameteroptimizationCellhandoverparameteroptimizationPowerrelatedparameterFeatureEnhancedeviceEtc.PoorcoveragePagingrelatedparametersetting(MSC、CCCH)HardwarefaultyInterferenceNetworkloadingstatusEtc.Cellselection/reselectionparameteroptimizationPhysicaladjustPowerrelatedparameterFeatureExpansionEtc.NMS:DCR/quality/HOF/blockingetc.DT: Coverage/quality/dcr/hof/CSSRetc.CQT: Crosstalking/onewayconversation/coverageetc.綜合題Reusepattern:TRXcellnumberfrequencyneededreusepatternfrequencynumber145213*721245213*618340193*515425123*41251683*3961373*397116rest10884total20394Frequencyplan:BCCHTRX2TRX3TRX4TRX5TRX6TRX7TRX8A194120364959guard+rest,total10frequencysB187725405262C1801330445565A293221375060B286826415363C2791431455666A392322385161B385927425464C3781532465767A49142339B484102843C477163347A590524B5831129C5761734A6896B68212C67518A788B781C774guard731935485868rest69707172CellAandcellB:BCCHTRX2TRX3TRX4TRX5TRX6TRX7TRX8A1895233850607348A28211284253631958A37517334656663568B1886243951B2811229B3741834Servingcell:P1=(35*2+36*2+34*2)/(2+2+2)=35>20P2=(36*2+34*2+32*1)/(2+2+1)>20P3=(34*2+32