KIN NHN XT CA N V HNG DN THC TPCng ty HTE nhn xt v vic thc tp ca sinh vin: Trn Cng Vin chuyn ngnh K thut in t vin thng nh sau: 1. Thi gian thc tp:...................................................................................... 2.cn b hng dn:........................................................................................ 2 Ni dung thc tp v kt qu t c:......................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ....................................................................................... . 3. thc chp hnh ni quy ca n v: ......................................................................................................................................... ............................................................................................................................. 4. im s nh gi (Thang im 10):............................................................. Cn b hng dn xc nhn ca c quan H Ni ngy thang 03 nm 2012

PHIU NHN XT KT QU THC TPH v tn CBHD thc tp: ............................................................................................................................................ C quan thc tp: ............................................................................................................................................ a ch: ............................................................................................................................................ in thoi:.................................................................Fax .................................................................................. Email:........................................................................Website: .................................................................................. H v tn sinh vin thc tp ............................................................................................................................................ Thi gian thc tp:t ngy .......................................n ngy

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1. Tinh thn lm k lut, thi lm vic: 4 im

......................................................................................................................................... ......................................................................................................................................... ......................................................................................................................................... ......................................................................................................................................... ......................................................................................................................................... 2. Kh nng chuyn mn, nghip v: 3 im ......................................................................................................................................... ......................................................................................................................................... ......................................................................................................................................... 3. Kt qu cng tc: 3 im (Mc hon thnh thnh cng vic) ......................................................................................................................................... ......................................................................................................................................... ......................................................................................................................................... ......................................................................................................................................... 4. Cc kin khc: 2 im (nu c) ......................................................................................................................................... ......................................................................................................................................... 5. im ngh: (Thang im 10) .........................................................................................................................................

Xc nhn ca c quan (K tn v ng du)

Cn b hng dn (K tn v ghi h tn)

Li cm n.Vit mt bo co thc tp l mt trong nhng vic kh khn m chng em phi hon thnh t trc n nay. Trong qu trnh thc hin ti, em gp nhiu kh khn v b ng. Nu khng c s gip v s ng vin ca chn thnh ca nhiu ngi em kh c th hon thnh tt bo co thc tp ny. u tin, em xin gi li cm n chn thnh n cc thy c trong khoa in t vin thng, nhng ngi trc tip hng dn, to iu kin cho em c c hi c tm hiu su sc nhng kin thc trong lnh vc in t vin thng. Bng kin thc chuyn mn su rng cng s nhit tnh,cc thy c gip em sng t nhiu vn v c bit hng dn em hon thnh bo co thc tp ny v cho em nhiu kin qu bu. Em xin chn thnh cm n n cc c ch anh ch ti cng ty HTE chi nhnh min trung to iu kin v gip em em c tip xc vi cng vic ti cng ty.c bit em xin cm anh NGUYN C HUY cn b cng ty HTE gip em trong sut qu trnh nghin cu, tm hiu thc t va qua. Trn con ng gp nht nhng kin thc qu bu ca ngy hm nay,em xin chn thnh cm n tt c mi ngi cho em nhng kin thc qu bu. Em xin chn thnh cm n!

Li ni uHin nay trn th gii mi mt ca i sng x hi u pht trin, khng nhng v kinh t, khoa hc t nhin m cn rt nhiu lnh vc khc. Ngnh thng tin lin lc c coi l ngnh mi nhn cn phi i trc mt bc, lm c s cho cc ngnh khc pht trin. Nhu cu trao i, cp nht thng tin ca con ngi mi ni mi lc ngy cng cao. Thng tin di ng ra i v pht trin tr thnh mt loi hnh dch v, phng tin thng tin ph bin, p ng nhu cu ca cuc sng hin i. Cc h thng thng tin di ng ang pht trin rt nhanh c v qui m, dung lng v c bit l cc loi hnh dch v mi p ng tt hn nhu cu ca ngi s dng. Trong nhng nm gn y, lnh vc thng tin di ng trong nc c nhng bc pht trin vt bc c v c s h tng ln cht lng phc v. Vi s pht trin ca nhiu nh cung cp dch v vin thng to ra s cnh tranh gia cc nh cung cp dch v. Cc nh cung cp dch v lin tc a ra cc chnh sch khuyn mi, gim gi v thu ht c rt nhiu khch hng s dng dch v. Cng vi , mc sng chung ca ton x hi ngy cng c nng cao khin cho s lng cc thu bao s dng dch v di ng tng t bin trong cc nm gn y. V vy m bo cht lng cuc gi cng nh cc dch v ca nh mng rt quan trng.T nhu cu thc t trn em vn dng cc kin thc hc tp trng vo qu trnh thc tp ti cng ty c phn dch v k thut vin thng H Ni chi nhnh ti min trung i su tm hiu v nhng vn c th xy ra i vi nh mng v cch gii quyt

TNG QUAN V MNG DI NG GSM I.Gii Thiu Mng GSML vit tt ca Global System Mobile Communication.h thng truyn thng di ng ton cu.GSM l h thng in thoi hon ton s dng k thut s,khc vi mng analog c in nh AMP.GSM l h thng ca Chu u c thit k theo k thut tin hiu s,n khng tng thch vi cc h thng trc ,h thng GSM nguyn thu dng tn s 900Mhz,tt c cc knh u c rng tn s l 200Khz H thng thng tin di ng GSM cho php chuyn vng t do ca cc thu bao trn th gii, c ngha l mt thu bao c th thm nhp sang mng ca nc khc khi di chuyn qua bin gii. Trm di ng GSM MS (GSM Mobile Station) phi c kh nng trao i thng tin ti bt c ni no trong vng ph sng quc t.

II.Cu Trc a L Ca MngMi mng in thoi cn mt cu trc nht nh nh tuyn cc cuc gi n tng i cn thit v cui cng n thu bao b gi. mt mng di ng, cu trc ny rt quan trng do tnh lu thng ca cc thu bao trong mng. Trong h thng GSM, mng c phn chia thnh cc phn vng sau Vng phc v PLMN Vng phc v MSC Vng nh v LA Cell

III.Phng Php Truy Nhp Trong TTDa truy nhp phn chia theo tn s FDMA a truy nhp phn chia theo thi gian TDMA a truy nhp phn chia theo m CDMA Ngoi ra cn s dng phng php truy nhp theo khng gian SDMA.Mng phng php TDMA kt hp FDMA.

GSM s dng

IV.Cu Trc Mng GSM

1.Phn h chuyn mch SS Trung tm chuyn mch cc dch v di ng B ghi nh v thng tr HLR B ghi nh v tm tr VLR Trung tm nhn thc AuC B ng k nhn dng thit b EIR Tng i di ng cng G MSC Khi IWF 2.Phn h trm gcBSS Trm thu pht gc BTS B iu khin trm gc BSC 3.Trm di ng MS 4. Phn h khai thc v bo dng OSS Khai thc v bo dng mng Qun l thu bao Qun l tht b di ng 5.Giao din v tuyn sKnh vt l Knh logic

6. H thng m

PHN A GII THIU CHUNG

GII THIU MNG VIETNAMMOBILE V CNG TY C PHN DCH V K THUT VIN THNG H NI HTE

I.TNG QUAN V MNG VIETNAMMOBILECng ty c phn Vin thng H Ni (tn ting Anh: Hanoi Telecom) l mt cng ty hot ng trong lnh vc vin thng ti Vit Nam, s hu thng hiu Vietnamobile (trc y l HT-Mobile).

Lch s mng di ng 092HT-Mobile l mng di ng th 6 c cp php ti Vit Nam theo hp ng hp tc kinh doanh gia Hanoi Telecom v Tp on Hutchison(Hng Kng). HT-Mobile bt u cung cp dch v vo thng 11 nm 2006 vi logo hnh con ong. Cng ngh s dng l CDMA 2000EvDO vi tn s hot ng 800 MHz. u s m HT-Mobile c s dng ti Vit Nam l 092. Tuy nhin do gp mt s kh khn khch quan nn HT-Mobile c chuyn i cng ngh t CDMA sang eGSM v c cc cp c thm quyn ph duyt. thc hin vic chuyn i cng ngh, HT-Mobile tin hnh gi tt c cc thu bao hin c ca mnh sang cho S-Fone, mng di ng CDMA khc dng cng tn s ti Vit Nam, qun l. Sau gn na nm chun b, n thng 6 nm 2008, Hanoi Telecom v

Hutchison k hp ng vi Ericsson v Huawei c th qun l, vn hnh v thit k mng cho mng di ng mi trong 3 nm, ng thi chu trch nhim chuyn i ton h thng mng t cng ngh CDMA sang GSM/EDGE. Vo ngy 8 thng 4 nm 2009, Hanoi Telecom ra mt mng di ng mi ca mnh vi tn Vietnamobile, vn gi nguyn u s 092 v i my mi sang cng ngh GSM cho thu bao 092 hin c Vietnammobile l mng di ng GSM ang trong thi k pht trin nhanh ti Vit Nam.Vietnammobile ch trng nng cao cht lng mng,gii thiu cc gi cc cnh tranh.dch v chm sc khch hng tiu chun quc t thng qua mng li phn phi ton quc di thng hiu Vietnammobile.Vietnammobile ang c v th vng chc gia tng th phn,v xy dng xu hng pht trin mi ti th trng vin thng vit nam

II.GII THIU CNG TY HTECNG TY C PHN DCH V K THUT VIN THNG H NI HTE vi tn giao dich quc t Hanoi telecommunication Engineering Service Join Stock Companyc thnh lp vo thng 9 nm 2007 vi cc c ng sng lp l cng ty c phn vin thng H Ni(Hanoi Telecom),n v ch qun mng di ng Vietnammobile v mt s n v c nhn khc trong lnh vc vin thng v cng ngh thng tin ti Vietnam Cc lnh vc hot ng ca cng ty HTE l: iu hnh v Qun l mng vin thng tin hc Kho st, Thit k, Qun l d n, T vn, Trin khai v Gim st nghim thu cc d n xy dng c bn bao gm xy dng c s h tng mng vin thng i l cung cp dch v vin thng v tin hc. Cho thu thit b vin thng v tin hc Dch v o kim tra nh gi cht lng mng vin thng Kho st, Thit k, Lp t, Ha mng, o kim v Gim st trin khai v nghim thu cc thit b/ mng vin thng v tin hc. Cung cp dch v ng dng trn cc mng vin thng v tin hc Xut nhp khu nguyn vt liu, vt t, thit b v h thng ng b trong lnh vc vin thng tin hc Xut nhp khu v kinh doanh phn cng phn mm tiu chun

Cung cp linh kin v vt t d phng phc v vic thay th v sa cha cc thit b thuc h thng mng c nh v mng v tuyn bao gm: cc thit b truyn dn Vi ba, truyn dn quang, cc h thng chuyn mch, truy nhp v di ng; Kinh doanh cc thit b u cui vin thng Kinh doanh cc dch v vin thng tin hc u t pht trin thu bao v chm sc khch hng cho cc nh khai thc Cung cp cc dch v gi tr gia tng trong cc mng vin thng tin hc Xut nhp khu cc mt hng m Cng ty kinh doanh. Cng ty l mt trong nhng n v hng u trong cung cp cc dch v lin quan trong lnh vc vin thng vi nhng chnh sch v cht lng c quy nh r rng, l: Khng ngng nng cao cht lng dch v v hiu qu hot ng kinh doanh ca Cng ty m bo tho mn ti a cc yu cu ca khch hng. Tr thnh Cng ty s 1 ti Vit Nam c kh nng cung cp trn gi (end-to-end) cc gii php dch v k thut t khu kho st thit k, xy dng c s h tng, lp t thit b cho n vn hnh v ti u ha mng thng tin di ng ni ring v mng vin thng tin hc ni chung. Duy tr v ci tin h thng qun l cht lng ISO 9001:2008 theo hng ngy cng nng ng, nng cao hiu qu gp phn v lun m bo i sng vt cht v tinh thn cho cn b v nhn vin Cng ty. Trong nhng nm qua doanh thu v li nhun qua hng nm lun tng ,iu chng t hng i ng n cng nh mt s cam kt cho s pht trin bn vng,lu di ca cng ty vi mong mun tr thnh mt cng ty c m hnh t chc hin i, khng ngng nng cao gi tr thng hiu ca cng ty ti Vit Nam v th trng vin thng quc t

PHN B NI DUNG THC TPQua qu trnh thc tp ti cng ty HTE em tip thu,hc hi c thm rt nhiu kin thc t thc t.ni dung ca qu trnh thc tp c em trnh by trong 3 chng nh sau: Chng1:cch x l cc alarms trong vin thng

Chng 2: tm hiu ve thit b Huawei BTS3900 Chng3:kch hot ngun v x l cnh bo cho BTS

CHNG 1 CCH X L CC ALARM TRONG VIN THNGTrong qu trnh vn hnh trm c rt nhiu cnh bo xy ra,sau y l cc cnh bo thng xy ra v cch x l

1.AC Main fail alarmy l cnh bo mi trng do module gim st mi trng a ra Nguyn nhn c th xy ra cnh bo: - Do mt in li AC cung cp cho BTS site Mun bit c chc chn c phi nguyn nhn do mt in li khng cn phi gim st xem 2 cnh bo DC Common alarm v AC Control fail c xut hin cng lc khng, ng thi gi cho Depot kim tra li. (1) -Do relay1 ca t Eltek tng ng vi cnh bo AC main fail b chuyn trng thi. (2) - Do kt ni dy cnh bo c vn hoc t Eltek c vn Depot kim tra v phn hi li vi NOC. (3) Cc bc x l: Bc 1: Nu l (1) gi cho Depot chy my n sau to TT AC Power down. Nu khng phi (1) chuyn sang bc 2. Bc 2: Nu (2) gi cho Depot n site vo ch Relay test reset alarm Nu khng c chuyn sang bc 3. Bc 3: Nu (3) gi Depot x l n site khc phc s c Nu khng c gi cho FM Engineer hoc Power Engineer phi hp vi Depot khc phc li.

2.Cell out of Service alarmCnh bo ny xut hin khi cell b mt dch v do TRX cha knh BCCH b li.

nh hng h thng: mt ton b dch v ca cell ang c cnh bo. Cc nguyn nhn c th: - Do TRX cha knh BCCH b li. - Do mt truyn dn. Lu nu xut hin c cnh bo LAPD OML fault th ko theo cnh bo Cell out of service cng xut hin, v vy FO Engineer ch to TT v LAPD OML. Cc bc x l: Bc 1: Kim tra xem knh BCCH c b li khng. - C Ch 3 pht sau chuyn sang bc 2. - Khng Knh BCCH b block. Unlock knh BCH bng LMT. Hon thnh x l cnh bo Bc 2: Kim tra xem TRX Mutual aid c xy ra khng. - C Chuyn sang bc 3 - Khng Chuyn sang bc 4 Bc 3: Kim tra xem knh BCCH c normal khng sau khi mutual aid. - C Thay th TRX ang cha knh BCCH. Vic x l alarm hon thnh. - Khng Lin lc vi BO Engineer x l. Bc 4: Kim tra xem TMU c normal khng. - C Chuyn sang bc 5. - Khng Lin lc vi BO Engineer x l. Bc 5: Kim tra xem truyn dn gia BTS v BSC c normal khng. - C Lin lc vi BO Engineer x l. - Khng X l khc phc li truyn dn bng vic gi cho Depot hoc FM engineer.

3.Door Entry alarmy l cnh bo mi trng do module gim st mi trng a ra. Nguyn nhn c th xy ra cnh bo: - Do ca ca BTS site b m ra do c ngi vo phng hoc ca ng cha kn Gi cho Depot kim tra chnh xc. (1) - Do dy cnh bo tng ng vi Door Entry alarm c vn . (2) - Do sensor cnh bo Door Entry alarm b li. (3). Cc bc x l Bc 1: Nu (1) gi cho Depot v nhng ngi lin quan in r thng tin vo trong TT.

Lu khi ngi vo site bo vi NOC ra khi site th Door Entry alarm cng phi c clear. Nu khng phi (1) chuyn sang Bc 2 Bc 2: Nu (2) hoc (3) gi cho Depot n site u ni li dy cnh bo hoc thay sensor cnh bo Door Entry. Nu khng c gi cho FM Engineer phi hp vi Depot x l.

4. E1 Local alarmCnh bo ny xut hin khi E1 Chip ca module iu khin chnh BTS3006C/BTS3002E,BTS3012 v BTS3012AE khng nhn ng cc tn hiu v gy ra mt truyn dn BTS nh hng h thng: Lm cho truyn dn gia BTS v upper-level BSC hoc lower-level BTS b ngt. Cc nguyn nhn c th: - ng truyn dn khng sn sng. - Set cc DIP Switch ca BTS khng ng. - Li phn cng Cc bc x l: Bc 1: Kim tra xem vic set DIP switch ca GTMU ng chun cha. FO Engineer gi cho depot n BTS kim tra v set DIP switch ca GTMUSau khi set DIP switch ca GTMU ng chun nu cnh bo vn cha c clear, chuyn sang bc 2. Bc 2: Kim tra trng thi card GTMU c normal khng. Gi Depot thc hin loop lung v pha BTS t gi DDF ca BTS. Sau khi loop lung, Depot quan st n led LIU0 tng ng vi cng 0 ca GTMU ni vi BSC, nu: - n led sng xanh lin tc ang c cnh bo E1 Local Alarm Board GTMU b li Depot thc hin thay th card GTMU. Kt thc x l cnh bo - n led sng xanh nhp nhy ang c cnh bo E1 Remote Alarm Board GTMU b li Depot thc hin thay th card GTMU. Kt thc x l cnh bo. - n led tt Card GTMU bnh thng, chuyn sang bc 3. Bc 3: Kim tra ng truyn dn ni BTS v BSC. Thc hin loop lung v pha BTS ti cc Note mc cao hn BTS ang c s c. Sau quan st n led ch th LIU0 xem c trng thi tt khng. Nu tt chng t truyn dn ni t BTS n im loop l bnh thng, nu n led sng hoc nhp nhy th truyn dn c vn cn gi cho Depot x l khc phc li truyn dn. Nu sau khi thc hin loop ti tt c cc im loop (bao gm c im BSC) truyn dn ni t BTS v BSC m kim tra thy truyn dn vn tt, gi

cho BO Engineer x l.

5.E1 Remote alarmCnh bo xut hin khi truyn dn ca BTS b ngt do BTS ma trn khng nhn ng cc tn hiu E1. nh hng h thng: Lm cho truyn dn gia BTS v upper-level BSC hoc lower-level BTS b ngt. Cc nguyn nhn c th: - ng truyn dn khng sn sng. - Set cc DIP Switch ca BTS khng ng. - Li phn cng Cc bc x l: Tng t nh cch x l cnh bo E1 Local alarm trn 6.High BER over the E1/T1 Link Nu tc bit li vt qu 5E-4 trn mi pht th cnh bo ny xut hin. Nu tc bit li nh hn 1E-6 trn mi pht, cnh bo ny c clear. nh hng h thng: lm suy gim cht lng dch v. Cc nguyn nhn c th: - Cc chui m ha ng hai pha thu pht khc nhau. - Subrack tip t khng ng cch. - Lp bo v ca cp gia BSC v thit b truyn dn b h hng. - Mng truyn dn li Cc bc x l: Bc 1: Nu Code Violatin b li, kim cc chui m ha ng trn 2 pha thu pht c ging nhau khng. -C Chuyn sang bc 3. -Khng Chuyn sang bc 2. Bc 2: Set cc chui m ha ng c hai pha thu pht u ging nhau, sau kim tra xem cnh bo c clear khng nu vn cha clear Chuyn sang bc 3 Bc 3: Kim tra xem subrack c b li do tip t khng ng khng -C Chuyn sang bc 4 -Khng Chuyn sang bc 5 Bc 4: Kt ni chc chn cp tip t ca subrack v kim tra li nu cnh bo vn cha clear Chuyn sang bc 5.

Bc 5: Kim tra xem lp bo v ca cp kt ni BSC ti thit b truyn dn c b h hng khng. -C Chuyn sang bc 6 - Khng Chuyn n bc 7. Bc 6: Thay th cp hng v kim tra li nu cnh bo vn cha clear Chuyn sang bc 7. Bc 7: Gi cho FM Engineer kim tra xem mng truyn dn c b li khng. Nu b li th FM Engineer phi hp vi Depot khc phc s c. Nu khng thi lin lc vi BO Engieer x l. 7.High Temprature 2 alarm y l cnh bo mi trng do module gim st mi trng a ra. Cc nguyn nhn c th: - Nhit trong phng BTS qu cao (trn 35oC) do iu ha phng my ht gas hoc b hng (1). - Nhit trong phng BTS qu cao do trm mt in Depot chy my n Tt iu ha. Trng hp ny FO Engineer ch to TT v mt in AC ch khng to TT v cnh bo High Temprature2. Lu khi site c in AC tr li sau mt thi gian alarm cng c clear nu khng gi li cho Depot kim tra li. - Hp AC controller b li hoc dy u ni cnh bo High Temprature2 c vn (2) Cc bc x l: Bc 1: Nu (1) gi cho Depot n BTS site sa iu ha. Nu khng phi (1) chuyn sang Bc 2 Bc 2: Nu (2) gi cho Depot n BTS site sa li cnh bo. Nu Depot khng sa c, gi cho FM Engineer phi hp cng Depot x l. 8.LAPD OML Fault Cnh bo ny xut hin khi xy ra mt kt ni LAPD OML gia BSC v BTS. nh hng h thng: Tt c cc dch v ca cuc gi. BTS t ng reset nu OML b mt kt ni hn 15 pht. Cc nguyn nhn c th: - ng truyn dn li.

- Board GEIUB/GOIUB/GEHUB/GFUGB/GOGUB trn giao din Abis chn vo slot BSC cha cht. - Ngun ca BTS site b li (BTS khng c cung cp ngun in). - TMU ca BTS b li. nh dng ca khung E1 tng ng vi Board giao din GEIUB/GOIUB/GEHUB/GFUGB/ GOGUB b li. - Sp mng (Network down). Cc bc x l Bc 1: Kim tra xem BTS site trn n (parent BTS) c b cnh bo LAPD fault khng. - C Clear cnh bo ca parent BTS ny theo cc hng dn x l. - Khng Chuyn sang bc 2. Bc 2: Kim tra xem BTS c ch truyn dn IP khng - C Chuyn sang bc 8 - Khng Chuyn sang bc 3. Bc 3: Kim tra xem ch s port E1 kt ni vi BTS c ging vi ch s c cu hnh khng. - C Chuyn ti bc 4. - Khng Cu hnh li d liu. Bc4: Kim tra xem board GEIUB/GOIUB/GEHUB/GEXUB/GFUGB/GOGUB trn slot ca BSC c b lng khng - C Cm chc li board ny vo slot. - Khng Chuyn ti bc 5. Bc 5: Kim tra xem ng truyn dn Abis b li khng bng cch query port E1 tng ng vi BTS site trn board giao din ca BSC. - C Lin lc vi Depot v FM Engineer x l. - Khng Chuyn sang bc 6.Bc 6: Kim tra xem BTS c b tt ngun khng (Thc t kim tra xem trm BTS c b mt in v Battery khng cn in cung cp cho BTS v thit b truyn dn hot ng). - C Bt ngun cho BTS. (Chy my n, in li AC c tr li) - Khng Chuyn sang bc 7.

Bc 7: Kim tra xem TMU b li khng bng cch thay th mt TMU hot ng bnh thng cho TMU c ca BTS. - C Thay th TMU. - Khng Chuyn sang bc 9. Bc 8: Kim tra xem cp E1 kt ni vi bng DDCU c g b khng -C Lin lc vi BO Engineer x l Bc9:Kim tra nh dng khung ca GEIUB/GOIUB/GEHUB/GEXUB/GFUGB/GOGUB c c set khng. - C Re-set li nh dng khung, nu n khc vi BTS - Khng Lin lc vi BO Engineer x l. 9. TRX Clock critical alarm Cnh bo ny xut hin khi c ng h ch v ng h con u khng bnh thng. nh hng h thng: Tt c cc dch v ca DRFU s b ngt khi s alarm xy ra. Cc nguyn nhn c th: - Board DRFU b hng - Board iu khin chnh b hng. - Dy kt ni vi DRFU b lng hoc b hng. - Card chuyn i tn hiu b hng. Cc bc x l Bc 1: Thay th card DRFU li. Gi cho Depot thay th card DRFU li. Kim tra xem cnh bo c c clear khng. - C Cnh bo c clear. Vic x l cnh bo hon thnh. - Khng Cnh bo khng c clear. Chuyn sang bc 2. Bc 2: Kim tra module iu khin chnh. Thay th module iu khin chnh v quan st xem cnh bo c clear khng. - C Cnh bo c clear. Hon thnh x l. - Khng Cnh bo cha c clear. Chuyn sang bc 3. Bc 3: Kim tra cc cp ca card chuyn i tn hiu.Rt ra v cm li dy cp hoc thay th dy cp ca card chuyn i tn hiu. Kim tra xem cnh bo c clear khng. - C Kt thc x l.

- Khng Chuyn sang bc 4. Bc 4: Kim tra card chuyn i tn hiu. Thay th card chuyn i tn hiu ca DRFU. Kim trra xem cnh bo c c clear khng. - C Cnh bo c clear. Kt thc x l. - Khng Cnh bo khng c clear. Lin lc vi BO Engineer x l. 10.VSWR Prompt Alarm Nu VSWR ca h thng antenna vt qu ngng cnh bo Carrier Module VSWR, cnh bo VSWR warning xut hin. nh hng h thng: Mi ln cnh bo ny xut hin s lm gim vng bao ph ca Carrier Module Cc bc x l: Bc 1: Kim tra xem u connector ca cp kt ni cng antenna ca Carrier Module. Kim tra xem u connector ca cp c c kt ni chc chn vi cng antennal ca Carrier Module khng. - C u connector c kt ni chc chn. Chuyn sang bc 2. - Khng u connector khng c kt ni chc chn. Vn cht li u connector, sau kim tra li xem cnh bo c clear cha. Nu cnh bo vn cha c clear Chuyn sang bc 2. Bc 2: Kim tra xem u connector ca cp kt ni vi cng antenna. Kim tra xem u connector dy nhy ni vi u feeder ti antenna hoc u connector dy nhy ni vi u feeder ti khi thu pht ca BTS xem kt ni c chc chn khng. - C Chuyn ti bc 2. - Khng u connector kt ni khng chc chn. Vn cht li u connector, sau kim tra xem cnh bo c clear khng. Nu cha clear Chuyn sang bc 3. Bc 3: Thay th dy nhy Thay th dy nhy ca h thng antenna. Nu cnh bo vn tn ti Chuyn sang bc 4. Bc 4: Thay th Carrier Module sau kim tra li. Nu cnh bo vn cha clear Chuyn sang bc 5. Bc 5: Thay th antenna sau kim tra li. Nu cnh bo vn cha clear lin lc vi FM Engineer x l.

11.Clock reference abnormal alarm Cnh bo xut hin khi clock mc trn khng th lock c khi BTS clock c set t BSC clok hoc clock bn ngoi. nh hng h thng: Tn hiu clock BTS li c s chnh lc tn hiu clock ca cc BTS khc. Do dn n vic handover (HO) khng bnh thng. Cc nguyn nhn c th: - Module clock b li. - Tn hiu clock ca ng truyn dn khng bnh thng. - Tn hiu clock m BTS tham chiu t mc trn khng bnh thng. Cc bc x l: Bc 1: Xem xt cc cnh bo lin quan Kim tra xem cnh bo E1 Local alarm hoc E1 Remote Alarm c tn ti trong h thng qun l cnh bo khng. - C Clear cnh bo E1 Local alarm hoc E1 Remote Alarm theo hng dn 4, 5 trn. - Khng Chuyn sang bc 2. Bc 2: Reset BTS Thc hin reset BTS mc 4 bng LMT. Kim tra xem cnh bo c clear cha. - C Hon thnh x l cnh bo. - Khng Chuyn sang bc 3 Bc 3: Thay th GTMU v kim tra xem cnh bo c clear khng. Nu cnh bo vn cha clear, lin lc vi BO Engineer x l.

CHNG 2TM HIU THIT B HUAWEI BTS 3900

I. Gii thiu v BTS3900 BTS3900 l th h th 4 ca BTS in door c pht trin bi Huawei. BTS 3900 bao gm 2 thnh phn chnh l BBU v DRFUs. So snh vi cc th h BTS truyn thng, c tnh ca BTS3900 c cu trc n gin hn v tch hp cao hn. Chc nng ca BTS3900 BTS3900 bao gm cc tnh chnh sau: - c pht trin trn nn tng ca cc h thng BTS c nn mang tnh k tha t 2G ln 3G. - BTS3900 h tr giao din Abis IP/FE phn cng v nu i hi c th cho php s dng Abis over IP thng qua vic nng cp phn mm. - Bng vic chia s BBU, n v trung tm x l, vi BTS3900 lm gim thiu ti a khng gian tha phn cng v gim gi thnh sn phm. - BTS3900 h tr nhiu bng tn s nh PGSM900, EGSM900 v DCS1800. - H tr pht phn tp v Power Boost Transmitter. - H tr thu phn tp 2 anten v 4 anten nng cao hiu qu ng uplink. - H tr GPRS v EGPRS.

- H tr nhiu dng topo mng nh hnh sao, cy, chain, ring v hybrid. - H tr cc thut ton m ha v gii m ha A5/3,A5/2,A5/1. - Mt t n BTS3900 h tr ln ti 12 TRXs vi cu hnh S4/4/4. - S dng nhiu t ca BTS3900 h tr ln ti 72TRXs vi cu hnh S24/24/24. II.Cu trc phn cng ca BTS3900

(1) Double radio filter unit (2) Fan box (3) GSM antenna and TMA control module (4) Baseband unit (5) Direct current distribution unit

- BBU (Baseband Unit) c s dng cho vic x l tn hiu bng c s v cho php tng tc gia BTS v BSC. - DRFU ( Double Radio Filter Unit) thc thi iu ch, gii iu ch gia tn hiu bng c s v tn hiu RF; x l d liu; kt hp v phn chia cc tn hiu. - GTMA: B iu khin TMA & Antenna. - DCDU: B phn phi ngun.

- Khay qut Cu trc ca t BTS3900 (-48V DC) T BTS3900 s dng ngun cung cp ngoi l -48V DC, c th cung cp cho 1 t hay l 1 dy t BTS3900. T BTS3900 -48V bao gm cc phn cng DRFU, BBU, GATM, DCDU-01 v qut. Khi bng tn c s: BBU3900 Cng sut tiu th ca BBU l 35W. Trng lng ca BBU nh hn 12Kg. Mi BBU3900 h tr c ti a 36TRXs v 12 Cells. BBU3900 bao gm BSBC, UEIU, GTMU v UELP. Mt module BBU3900 bao gm UBFA v UPEU. BSBC (Universal BBU Subrack Backplane type C (2U): BSBC l thnh phn sau ca BBU, cung cp 8 khe cho cm board, 2 khe cho power v 1 khe cho qut

GTMU (GSM Time & Management Unit for BBU) GTMU c t v tr khe th 5,6 v 7. GTMU c chc nng iu khin v qun l ton b BTS, n cung cp cc giao din lin quan

ti ng h tham chiu, ngun cung cp, OM v thu thp cc cnh bo ngoi.

GTMU thc thi cc chc nng sau: + iu khin, duy tr hot ng ca BTS. + H tr qun l li, cu hnh, thc thi v bo mt cho BTS. + Gim st module qut v module ngun. + Phn phi v qun l tn hiu xung ng h. + Cung cp u vo ng h cho vic testing. + Cung cp cc cng Ethernet cho cc thit b u cui vn hnh. + H tr 4 u vo E1. + Cung cp cng CPRI cho vic giao tip vi RRU. Khi UBFA ( The Universal BBU Fan Unit type A 2U) UBFA giao tip vi GTMU trao i cc cnh bo nhit , iu khin tc qut v thng bo cc cnh bo. Module UBFA c th c tho lp nng. Module UPEU (The Universal power and Environment interface Unit type-A) UPEU h tr cung cp ngun -48V u vo, cung cp ngun cho cc cc, cc module v qut

ca BBU; n cng cung cp truy nhp a ng tn hiu gim st mi trng. Khi qut :Mt khi qut bao gm 4 qut, di y minh ha khi qut.

khi qut Cc cng trn module khi qut Cng Cng ngun Cng cm bin nhit Cng giao tip COM IN Ch : Set DIP swich cho cc GTMU Trc khi lp t BBU, cn phi Set DIP swich cho GTMU GTMU c 5 DIP switch, 4 DIP c s dng - 1 DIP (S3) dnh cho d phng. Mi DIP switch c 4 bit. S dng cp lung E1- 120 Ohm u ni RJ45 Du hiu in -48 V SENSOR COM OUT u ni u ni ngun 3V3 u ni RJ45 u ni RJ45 M t Tip nhn ngun -48V DC Kt ni ti cm bin nhit ngoi Kt ni vi cc n v qut cc tng thp hn Kt ni vi cc module v cc cc cc tng cao hn

S4 & S5 ca cc GTMU khng c thit lp cho chc nng Abis bypass ( i thng u ni tip 2 BTS).

Hnh v di y l v d set DIP switch cho GTMU i vi lung E1 - 120 Ohm Cp u ni cho BBU3900 Cp u ni cho BBU3900 c phn loi thnh cp ni t PGND, cp ngun -48V, cp E1/T1, cp lung E1, cp tn hiu cnh bo mi trng RS485, cp tn hiu CPRI gia BBU v RRU; cp tn hiu gim st BBU. DCDU - B phn phi ngun cho t BTS3900 DCDU bao gm cc chc nng sau: - Tip nhn ngun vo -48V DC. - Phn phi ngun -48V DC cho 10 u ra cc board v cc module ca t. - Cung cp bo v qu p.

Cc cng

tc ngun trn DCDU Cc loi cp ni cho ngun: S cp M t S lng R1-R12 RF Jumpers 12 P1-P2 Cp u ni ngun ngoi (-48 V) 2 P3-P8 Cp ngun ni gia DCDU v 6 DRFUs P9 Cp ngun ni gia DCDU v 1 Fan Box P10 Cp ngun ni gia DCDU v 1 BBU P11-P12 D phng 2 S1-S6 Cp tn hiu CPRI ni gia 6 BBU v DRFU S7 Cp lung E1 ca BBU. 1 S8 Cp tn hiu gim st ca DCDU 1 S9 Cp tn hiu gim st ca Fan 1 Box S10 Cp E1/T1 ca BBU 1

III.CU HNH CHO BTS: Cu hnh S2/2/2Cu hnh S4/4/4

Cu hnh kt ni cp RF Kt ni cp RF, vi Cell 2TRX Mt module DRFU. Mt anten 2 cc. Loi Cell h tr S1 (without transmit diversity) S1 (with transmit diversity) S2 (without transmit diversity) Ch TRX Ch Anten Transmit Double Independency Antenna or Combining Transmit Double Diversity Antenna Transmit Double Independency Antenna or Combining

Kt ni cp RF , vi Cell 4TRX Hai module DRFU Mt anten 2 cc Loi Cell h Ch TRX tr S2 (PBT) PBT S3 (without transmit diversity) S4 (without transmit diversity)

Ch anten

Single Antenna Double Receiver Transmit Single Antenna Independency or Double Combining Receiver Transmit Single Antenna Independency or Double Combining Receiver

IV.NHNG NGUYN TC CU HNH:

Cu hnh c s- Mt t n BTS3900 cung cp ln ti 12 sng mang vi cu hnh ln nht ca cell l S4/4/4, v h tr ng dng dual-band. - Lm gim gi thnh sn phm. - Nng cp cu hnh n gin. - S lng DRFU nh nht. - S lng BBU nh nht. - tin cy cao nht.- Ch cu hnh ca 2 TRXs trong 1 sector.

C s cu hnh RF- Topo dng sao c s dng ni gia BBU v DRFU i vi cu hnh S4/4/4 v nh hn;

cn i vi cell c cu hnh cao hn S4/4/4 topo dng vng c khuyn ngh s dng. - S dng s lng anten nh nht. Mi sector ca BTS phi c cu hnh vi s lng anten

nh nht. i vi 2 anten thu phn tp, mi sector c 2 knh anten, i vi 4 anten thu phn tp th mi sector c 4 knh anten.- Trong knh pht khng kt hp ( Non-combination), cu hnh non-combination c khuyn ngh dng cho DRFU trnh suy hao cng sut v gim cng sut tiu th ca BTS. Nu cu hnh combination c yu cu, khoang kt hp phi c cu hnh bn ngoi DRFU v 1 combination c khuyn ngh s dng.

C s cu hnh ca BBUCp ni trunk l nh nht. S lng UPEU l nh nht. Khuyn ngh s dng UPEU n. Ch d phng d tha c cu hnh nu yu cu.

Mt BBU h tr 6 cng CPRI. Topo dng sao c khuyn ngh gia cc DRFU

CHNG 3 BT NGUN V TRNH T X L CNH BO CHO BTSI.YU CU DNG C 1.Key: Cha Kha m site 2.Multi meter: ng h vn Nng 3.Led: n Led 4.Kront knife: Dao Kront 5.Forfex : Km ct. 6.Screwdriver: Tucl vt 7.Hair drier: My sy tc

8.Checklist template II.CH AN TON Khng eo nhn , ng h cc trang sc kim loi khi test. Khi a bt ngun cua BTS thi khng c tt ngun. Trc khi tt ngun nao thi phai xem co anh hng n BTS hay khng. 3.PHI HP LM VIC OMC engineer. In OMC to check. K s trc ti OMC Commissioning engineer. On site K s Commissioning ti site.

MW engineer. To check MW K s MW 4.BT NGUN BTS 1.Check output power on power cabinet: about 53V Kim tra gia tri ngun trn cabin Ngun: trong khoang 53V 2.Check the contact on power cabinet: ON Kim tra contact phai vi tri ON 3.Turn on the BTS power supply contact: -48V Bt contact cp ngun cho tu BTS: - 48V 4.Check DC power input on BTS cabinet about -48V o ngun trn BTS: -48 V( -37V to -55V is ok) 5. Check all the power cable on BTS. Kim tra u ni trn BTS (cap ngun, cap canh bao, Bt contact FAN power 7. Turn on BBU power contact, have two contact. cap canh bao quat). 6. Turn on FAN power contact first. It is Normal -> next step.

Bt contact BBU ( gm 2 contact) 8. Turn on DRFU power contact. Bt contact DRFU ( chi bt cai nao dung) 5.TEST LUNG 1.Loop lung t MW n BSC: trn phin MW Cch loop: TX gm TX1 v TX2 l ng truyn: Led sng RX gm RX1 v RX2 l ng nhn: Led tt u TX1 vi RX1 u TX2 vi RX2 Lin lac vi ky s OMC kim tra truyn dn.

Normal(binh thng): khi loop vao bn trong Faultly(li) : Khi thao loop 2.Loop lung t DDF n tu BTS: Phin BTS Cch loop: TX gm TX1 v TX2 l ng truyn: Led sng RX gm RX1 v RX2 l ng nhn: Led tt u TX1 vi RX1 u TX2 vi RX2 Nu en LIU0 trn BBU tt: OK Nu LIU0 sng th check li v tr bn dy 3.u lung t BTS n MW 6.TRNH T KIM TRA H THNG CNH BO TI BTS Kim tra Alarm: 1 Canh bao ngun AC 2 Canh bao c quy 3 Module alarm

4 Canh bao chung 5 Oblight alarm 6 Fire alarm 7 High temp 2 alarm 8 Control fail / Sensor error alarm 9 High temp 1 alarm 10 Door entry alarm