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東莞移動(dòng)華為專項(xiàng)優(yōu)化項(xiàng)目問題小區(qū)處理匯總-免費(fèi)閱讀

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【正文】 372廈坭工業(yè)區(qū)1從11月5日開始,372廈坭工業(yè)區(qū)1出現(xiàn)上行語音質(zhì)量整體偏差,平均上行語音質(zhì)量只有85%左右,而且下行質(zhì)量整體也相對(duì)偏低,同時(shí)干擾達(dá)到3級(jí),如下表:起始時(shí)間CELLNAME載頻號(hào)上行語音質(zhì)量干擾帶1比例干擾帶2比例干擾帶3比例08/11/2009 18:00:00372廈坭工業(yè)區(qū)13352% 08/11/2009 19:00:00372廈坭工業(yè)區(qū)13367% 08/11/2009 20:00:00372廈坭工業(yè)區(qū)13390% 08/11/2009 18:00:00372廈坭工業(yè)區(qū)13578% 08/11/2009 19:00:00372廈坭工業(yè)區(qū)13578% 08/11/2009 20:00:00372廈坭工業(yè)區(qū)13587% 08/11/2009 18:00:00372廈坭工業(yè)區(qū)13683% 08/11/2009 19:00:00372廈坭工業(yè)區(qū)13683% 08/11/2009 20:00:00372廈坭工業(yè)區(qū)13691% 08/11/2009 18:00:00372廈坭工業(yè)區(qū)13782% 08/11/2009 19:00:00372廈坭工業(yè)區(qū)13780% 08/11/2009 20:00:00372廈坭工業(yè)區(qū)13785% 08/11/2009 18:00:00372廈坭工業(yè)區(qū)13879% 08/11/2009 19:00:00372廈坭工業(yè)區(qū)13881% 08/11/2009 20:00:00372廈坭工業(yè)區(qū)13889% 08/11/2009 18:00:00372廈坭工業(yè)區(qū)13981% 08/11/2009 19:00:00372廈坭工業(yè)區(qū)13976% 08/11/2009 20:00:00372廈坭工業(yè)區(qū)13985% 關(guān)跳頻后,利用華為小區(qū)頻率掃描的功能,對(duì)該小區(qū)進(jìn)行頻率掃描,下面是頻率掃描圖:從上面的頻率掃描圖可以看到, 26以下的低頻段頻點(diǎn)上行干擾嚴(yán)重,同時(shí)從下面的信道干擾帶監(jiān)測(cè)圖也可以看到,載波1,2,3,4對(duì)應(yīng)的頻點(diǎn)都是低頻段的,上行干擾都達(dá)到5級(jí)左右,懷疑是受CDMA干擾引起。頻點(diǎn)掃描圖如下:同時(shí),指標(biāo)中干擾特別嚴(yán)重的兩個(gè)載頻(索引號(hào)=934和99),用到的頻點(diǎn)分別是3和20,正處于頻點(diǎn)掃描圖中顯示干擾最嚴(yán)重的頻段內(nèi),將兩頻點(diǎn)更換后(TCH=3/20換成54/90),干擾明顯減少,各項(xiàng)指標(biāo)也有所改善,指標(biāo)對(duì)比如下:日期時(shí)間對(duì)象名稱上行語音質(zhì)量指配成功率切換成功率干擾帶3比例干擾帶5比例24/09/200913:00:00372余良圍2:載頻索引號(hào)=934% 24/09/200914:00:00372余良圍2:載頻索引號(hào)=934% 24/09/200915:00:00372余良圍2:載頻索引號(hào)=934% 24/09/200913:00:00372余良圍2:載頻索引號(hào)=99% 24/09/200914:00:00372余良圍2:載頻索引號(hào)=99% 24/09/200915:00:00372余良圍2:載頻索引號(hào)=99% 25/09/200913:00:00372余良圍2:載頻索引號(hào)=934% 25/09/200914:00:00372余良圍2:載頻索引號(hào)=934% 25/09/200915:00:00372余良圍2:載頻索引號(hào)=934% 25/09/200913:00:00372余良圍2:載頻索引號(hào)=99% 25/09/200914:00:00372余良圍2:載頻索引號(hào)=99% 25/09/200915:00:00372余良圍2:載頻索引號(hào)=99% 注:標(biāo)注黃色部分為修改頻點(diǎn)后的指標(biāo)。指標(biāo)對(duì)比如下:操作記錄起始時(shí)間對(duì)象名稱載頻索引號(hào)下行語音質(zhì)量上行1amp。測(cè)試圖如下: 由以上對(duì)比可見,在411D向西1的主覆蓋區(qū)域,占用到411D向西3的問題載頻時(shí)的信號(hào)強(qiáng)度過強(qiáng),最終確認(rèn)為天饋系統(tǒng)連接錯(cuò)誤導(dǎo)致。372大綠地金豪花園3372大綠地金豪花園3的下行話音質(zhì)量偏低,其中載頻索引號(hào)為685載波的下行質(zhì)差特別嚴(yán)重,指標(biāo)統(tǒng)計(jì)如下:把372大綠地金豪花園3的跳頻關(guān)閉后,發(fā)現(xiàn)載頻索引號(hào)為687載波的下行質(zhì)量也偏差,把載頻索引號(hào)為685/687載波上的122頻點(diǎn)更換為427頻點(diǎn)后,372大綠地金豪花園3的下行質(zhì)量明顯改善,切換成功率也有所提升,指標(biāo)統(tǒng)計(jì)如下:、載波故障372鐵松2根據(jù)話音質(zhì)量測(cè)量統(tǒng)計(jì),發(fā)現(xiàn)372鐵松2小區(qū)整體下行話音質(zhì)量較差,指標(biāo)統(tǒng)計(jì)如下:起始時(shí)間小區(qū)名載頻索引號(hào)下行語音質(zhì)量上行14/10/2009 19:00:00372鐵松2147% 14/10/2009 20:00:00372鐵松2147% 14/10/2009 21:00:00372鐵松2147% 14/10/2009 19:00:00372鐵松2150% 14/10/2009 20:00:00372鐵松2150% 14/10/2009 21:00:00372鐵松2150% 14/10/2009 19:00:00372鐵松2151% 14/10/2009 20:00:00372鐵松2151% 14/10/2009 21:00:00372鐵松2151% 14/10/2009 19:00:00372鐵松2152% 14/10/2009 20:00:00372鐵松2152% 14/10/2009 21:00:00372鐵松2152% 關(guān)跳頻后,發(fā)現(xiàn)該小區(qū)除載頻索引號(hào)為148/149的載頻無采樣點(diǎn)外,其它載頻指標(biāo)均正常;檢查數(shù)據(jù)配置,發(fā)現(xiàn)索引號(hào)為148/149的載頻信道配置全為數(shù)據(jù)業(yè)務(wù),將這兩個(gè)載頻各增加兩個(gè)TCH信道后再觀察指標(biāo),發(fā)現(xiàn)索引號(hào)為148的載頻指標(biāo)正常,索引號(hào)為149的載頻下行語音質(zhì)量等各項(xiàng)指標(biāo)均很差,148/149兩個(gè)載頻指標(biāo)對(duì)比如下表:起始時(shí)間小區(qū)名載頻索引號(hào)下行語音質(zhì)量指配成功率切換成功率上行16/10/2009 18:00:00372鐵松2148% 16/10/2009 19:00:00372鐵松2148% 16/10/2009 20:00:00372鐵松2148% 16/10/2009 21:00:00372鐵松2148% 16/10/2009 18:00:00372鐵松2149% 16/10/2009 19:00:00372鐵松2149% 16/10/2009 20:00:00372鐵松2149% 16/10/2009 21:00:00372鐵松2149% 將以上兩個(gè)載頻的頻點(diǎn)互換,發(fā)現(xiàn)仍是索引號(hào)為149載頻的各項(xiàng)指標(biāo)差,懷疑該載頻有隱性故障或者載頻與合路器的發(fā)射線連接有問題。2級(jí)上,并無干擾情況。關(guān)閉跳頻之后指標(biāo)如下:起始時(shí)間小區(qū)名稱載頻號(hào)指配成功率切換成功率干擾帶2比例干擾帶1比例下行語音質(zhì)量上行語音質(zhì)量01/09/2009 18:00:00372鹿湖西路10%%01/09/2009 19:00:00372鹿湖西路10100%%01/09/2009 20:00:00372鹿湖西路10100%%01/09/2009 18:00:00372鹿湖西路12%%01/09/2009 19:00:00372鹿湖西路12%%01/09/2009 20:00:00372鹿湖西路12%%01/09/2009 18:00:00372鹿湖西路13100%%01/09/2009 19:00:00372鹿湖西路13100%%01/09/2009 20:00:00372鹿湖西路13100%%01/09/2009 18:00:00372鹿湖西路1500%%01/09/2009 19:00:00372鹿湖西路1500%%01/09/2009 20:00:00372鹿湖西路1500%%派單基站人員到站檢查后,發(fā)現(xiàn)到BTS端天饋線連接在未開啟的4號(hào)載頻上,5號(hào)載波未連接饋線,而BSC端配置數(shù)據(jù)在5號(hào)載頻上。對(duì)換后發(fā)現(xiàn)異常指標(biāo)轉(zhuǎn)移到連接B支路天饋的載頻上,處理前后載頻與天饋支路連接關(guān)系及指標(biāo)對(duì)比如下:小區(qū)載波索引號(hào)對(duì)換前連接支路對(duì)換后連接支路411D向西1529AB411D向西1530BA411D向西3539AB411D向西3540BA411D向西1對(duì)換前后指標(biāo):操作記錄起始時(shí)間對(duì)象名稱載頻索引號(hào)下行語音質(zhì)量指配成功率切換成功率上行下行對(duì)換前16/11/2009 19:00:00411D向西1530% 16/11/2009 20:00:00411D向西1530% 16/11/2009 21:00:00411D向西1530% 16/11/2009 19:00:00411D向西1529% 16/11/2009 20:00:00411D向西1529% 16/11/2009 21:00:00411D向西1529% 對(duì)換后18/11/2009 18:00:00411D向西1530% 18/11/2009 19:00:00411D向西1530% 18/11/2009 20:00:00411D向西1530% 18/11/2009 18:00:00411D向西1529% 18/11/2009 19:00:00411D向西1529% 18/11/2009 20:00:00411D向西1529% 411D向西3對(duì)換前后指標(biāo):操作記錄起始時(shí)間對(duì)象名稱載頻索引號(hào)下行語音質(zhì)量指配成功率切換成功率上行下行對(duì)換前16/11/2009 19:00:00411D向西3540% 16/11/2009 20:00:00411D向西3540% 16/11/2009 21:00:00411D向西3540% 16/11/2009 19:00:00411D向西3539% 16/11/2009 20:00:00411D向西3539% 16/11/2009 21:00:00411D向西3539% 對(duì)換后18/11/2009 18:00:00411D向西3540% 18/11/2009 19:00:00411D向西3540% 18/11/2009 20:00:00411D向西3540% 18/11/2009 18:00:00411D向西3539% 18/11/2009 19:00:00411D向西3539% 18/11/2009 20:00:00411D向西3539% 由以上分析處理可知,411D向西3小區(qū)指標(biāo)異常的載頻均是連接DDPU的天饋支路B上,問題應(yīng)該是出在天饋支路B上,進(jìn)一步分析該問題特點(diǎn):同站的兩個(gè)小區(qū),均是天饋支路有問題,主要指標(biāo)問題是下行弱,根據(jù)以往經(jīng)驗(yàn),很有可能是兩個(gè)小區(qū)的天饋線連接錯(cuò)位導(dǎo)致。處理前后指標(biāo)對(duì)比如下:392六甲管理區(qū)3互換DDPU前后指標(biāo)對(duì)比: 操作記錄起始時(shí)間對(duì)象
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