Bo co thc tp tt nghip

Bo co thc tp tt nghip

NHN XT CA N V THC TP

nng, ngy thng 01 nm 2013

Nhn vin Phng OMC-KV Gim c Cng ty

K xc nhn K xc nhn

NHT K THC TP TT NGHIP

Ngy 10/12/2012 : Nhm thc tp tp trung ti cng ty hon thnh cc th tc np nh, s yu l lch v giy gii thiu thc tp cho cng ty xc nhn. Ngy 11/12/2012 : C nhm tp trung ti Trung tm lc 8h00 v c phn thnh 3 nhm nh: +i GSM: Cc-Dng-Cng-Bnh +OMC : Trnh-Hun Nga +3G :Chnh My Sau , nhm OMC-KV tp trung ti Phng OMC-KV gp anh Vinh trnh by v hng dn ni dung tin hnh thc tp cho nhm. Ngy 17/12/2012 : Tp trung lc 14h00 ti phng OMC-KV gp anh Nguyn Trung Hiu nhn nhim v thc tp v c anh hng dn trnh by h thng chung ca mng vin thng 2G GSM ti cng ty, giao ti liu tham kho v vit bo co v mng GSM. Ngy 24/12/2012 : Nhm tp trung ti Trung tm lc 14h00 v tip tc c anh Hiu kim tra phn bo co tng quan v 2G c giao, tip tc thng tin hng dn v mng 3G W-CDMA UMTS. Ngy 07/1/2013 : Nhm tp trung ti Trung tm lc 14h00 v c anh Hiu kim tra s lc v 3G v trnh by v chc nng v nhim v ca Phng OMC trong h thng mng ca Trung tm. Ngy 14/01/2013 : C nhm tp trung li anh Hiu xem xt li ln cui cng nhn xt v cc thng tin c vit ca nhm thc tp.

Nhn vin hng dn

DANH MC T VIT TTMSMobile StationTrm di ng

MEMobile EquipmentThit b di ng

SIMSubscriber Identity ModuleModul nhn dng thu bao

BSSBase Station SubsystemPhn h trm gc

BTSBase Transceive StationTrm thu pht gc

BSCBase Station ControllerB iu khin trm gc

OMCOperation and Maintenance CenterTrung tm vn hnh v bo dng

MSCMobile Switching CenterTrung tm chuyn mch di ng

VLRVisited Location RegisterThanh ghi nh v m tr

GMSCGate MSCTrung tm chuyn mch cng

EIREquipment Identity RegisterThanh ghi nhn dng thit b

HLRHome Location RegisterThanh ghi nh v thng tr

AuCAuthentication CenterTrung tm nhn thc

PLMNPublic Land Mobile NetworkMng di ng mt t cng cng

PSTNPublic SwitchedTelephoneNetworkMng chuyn mch in thoi cng cng

SSSwitching SubsystemPhn h chuyn mch

IMIEInternational Mobile Equipment IdentityS nhn dng thit b di ng

IMSIInternational Mobile Subcrier IdentityS nhn dng thu bao di ng

TMSITemporarily Mobile subscriber IdentityS nhn dng thu bao tc thi

TRAUTranscoding and Rate Adapter UnitB chuyn i m

LAILocation Area IdentityNhn dng khu vc h thng

OSSOperation and Suppor SystemH thng bo dng v h tr

OMCOperator and Maintain CentreTrung tm vn hnh v bo dng

UMTSUniversal Mobile Telecommunications System

WCDMAWide-Code Division Multiple Accessa truy nhp phn chia theo m bng thng rng

TDMTime Divsion Multiplexingiu ch phn chia min thi gian

UEUser EquipmentThit b ngi dng

UTRANUMTS Terrestrial Radio NetworkMng v tuyn mt t UMTS

CNCore NetworkMng li

TETerminal EquipmentThit b u cui

MEMobile EquipmentThit b di ng

USIMUMTS Subscriber Identity ModuleModule nhn dng thu bao UMTS

RNSRadio Network SystemH thng mng v tuyn

RNCRadio Network Controlleriu khin mng v tuyn

SRNC Serving RNCRNC phc v

DRNCDrift RNCRNC tri

HEHome EnvironmentMi trng nh

GPRSGeneral Packet Radio Service Dch v v tuyn gi tng hp

EDGEEnhanced Data for Global EvolutionPht trin d liu ton cu m rng

SNServing NetworkMng dch v

PSPacket SwitchingChuyn mch gi

CSChannel SwitchingChuyn mch knh

SGSNServing GPRS Support NodeNode h tr phc v GPRS

GGSNGateway GPRS Support NodeNode h tr cng GPRS

PHN 1: TNG QUAN V TRUNG TM DCH V VIN THNG KV30. Gii thiuCng ty Dch v Vin thng l t chc kinh t - n v thnh vin hch ton ph thuc Tng Cng ty Bu chnh Vin thng Vit nam (nay l Tp on), theo iu l t chc v hot ng ca Tng Cng ty Bu chnh Vin thng Vit Nam c ph chun ti Ngh nh s 51/CP ngy 01/8/1995 ca Chnh ph l mt b phn cu thnh ca h thng t chc v hot ng ca Tng Cng ty, hot ng kinh doanh v phc v trong lnh vc thng tin di ng, nhn tin v in thoi dng th ton quc, cng cc n v thnh vin khc trong dy chuyn cng ngh bu chnh vin thng lin hon, thng nht, c mi lin h mt thit vi nhau v t chc mng li, li ch kinh t, ti chnh, pht trin dch v bu chnh vin thng, thc hin nhng mc tiu, k hoch Nh nc do Tng Cng ty giao.Cng ty c thnh lp theo Quyt nh s : 331/Q-TCCB ngy 14/6/1997 ca Tng cc trng Tng cc Bu in. Nhim v chnh ca Cng ty l qun l khai thc kinh doanh 3 dch v: Mng in thoi di ng ton quc (VinaPhone), mng Nhn tin Vit Nam (Paging), mng in thoi th ton quc (CardPhone). Do khng cn ph hp vi th trng nn sau hn 10 nm pht trin mng Nhn tin ton quc c VNPT quyt nh ngng hot ng vo thng 9/2004. Tn giao dch l Vietnam Telecom Services Company Tn gi tt l Vinaphone Mng in thoi di ng Vinaphone chu s qun l v iu hnh ca Cng ty Dch V Vin Thng Vinaphone. Cng ty Vinaphone gm 3 trung tm: Min Bc (VNP I), min Nam (VNP II), min Trung (VNP III) a ch Cng ty VinaPhone: Ta nh VinaPhone, s 216 Trn Duy Hng Cu Giy H Ni

0. Cc trung tm ca cng ty Vinaphone Trung tm VinaPhone 1: Qun l 29 tnh thnh ph t pha Bc n H Tnh. S 5 Ng Simco, 28 Phm Hng, M nh, T Lim, H Ni. Tel: 04.35146000 Trung tm VinaPhone 2: Qun l 22 tnh thnh pha Nam t Ninh Thun n C Mau k c Lm ng. S 224 Thnh Thi, Phng 14, Qun 10, TP.HCM. Tel: 08.38666625. Trung tm VinaPhone 3: Qun l 13 tnh thnh khu vc min trung t Qung Bnh n Khnh Ha bao gm c cc tnh Ty Nguyn. S 4 Nguyn Vn Linh, Thnh ph Nng. Tel: 0511.38725550. Trung tm dch v vin thng khu vc III (Vinaphone 3)Cc n v k thut Vinaphone 3 bao gm: Phng k thut nghip v i GSM: l n v sn xut trc thuc Trung tm c chc nng vn hnh, khai thc, bo dng cc h thng thit b chuyn mch, thit b v tuyn thuc mng di ng Vinaphone, thit b gi tr gia tng , thit b truyn dn, v mt s thit b khc na thuc quyn qun l ca i. OMC:Trung tm vn hnh v bo dng h thng mng thc hin chc nng gim st cnh bo v theo di cht lng m bo h thng hot ng tt. Xng: h tr mng thit b, thc hin nhim v bo tr v sa cha thit b ca h thng mng trong trng hp c s c xy ra.

PHN 2: TNG QUAN V MNG 2G2.1. M hnh h thng thng tin di ng GSM

Hnh 2.1 M hnh h thng thng tin di ng GSMCc k hiu MSMobile StationTrm di ng

MEMobile EquipmentThit b di ng

SIMSubscriber Identity ModuleModul nhn dng thu bao

BSSBase Station SubsystemPhn h trm gc

BTSBase Transceiver StationTrm thu pht gc

BSCBase Station ControllerB iu khin trm gc

OMCOperation and Maintenance CenterTrung tm khai thc v bo dng

MSCMobile Switching CenterTrung tm chuyn mch di ng

VLRVisited Location RegisterThanh ghi nh v tm tr

GMSCGate MSCTrung tm chuyn mch cng

EIREquipment Identity RegisterThanh ghi nhn dng thit b

HLRHome Location RegisterThanh ghi nh v thng tr

AuCAuthentication CenterTrung tm nhn thc

PLMNPublic Land Mobile NetworkMng di ng mt t cng cng

PSTNPublic Switched Telephone NetworkMng chuyn mch in thoi cng cng

InternetInternetInternet

SSSwitching SubsystemPhn h chuyn mch

Hnh 2.2 Cc thnh phn ch yu ca mng GSM

Hnh2.3 M hnh h thng thng tin di ng GSM

2.2. Cc thnh phn chc nng trong h thngMng thng tin di ng cng cng mt t PLMN (Public Land Mobile Network) theo chun GSM c chia thnh 4 phn h chnh sau: Trm di ng MS (Mobile Station) Phn h trm gc BSS (Base Station Subsystem) Phn h chuyn mch SS (Switching Subsystem) Phn h khai thc v h tr (Operation and Support Subsystem)2.2.1. Trm di ng MS Trm di ng (MS) gm c ME v SIM. SIM cung cp kh nng di ng c nhn, v th ngi s dng c th lp SIM vo bt c my in thoi di ng GSM no truy nhp vo dch v ng k. Mi in thoi di ng c phn bit bi mt s nhn dng in thoi di ng IMEI (International Mobile Equipment Identity). Card SIM cha mt s nhn dng thu bao di ng IMSI (International Mobile Subcriber Identity) h thng nhn dng thu bao. MS c 2 chc nng+ Thit b vt l giao tip gia thu bao di ng vi mng qua ng v tuyn.+ ng k thu bao, mi thu bao phi c mt th gi l SIM card.2.2.2. Phn h trm gc BSS BSS giao din trc tip vi cc trm di ng MS bng thit b BTS thng qua giao din v tuyn. BSS bao gm+ Full-rate Transcoder (XCDR) v Remote Transcoder (RXCDR)+ BSC (Base Station Controler): B iu khin trm gc.+ BTS (Base Transceiver Station): Trm thu pht gc. + PCU

Hnh 2.4 Kin trc thit b GSM

2.2.2.1 Khi BTSMt BTS bao gm cc thit b thu /pht tn hiu sng v tuyn, anten v b phn m ha v gii m giao tip vi BSC.BTS l thit b trung gian gia mng GSM v thit b thu bao MS, trao i thng tin vi MS qua giao din v tuyn (giao din R).Cung cp vng ph sng, thc hin cc cuc gi n my di ng.2.2.2.2 TRAUThit b x l tn hiu s c dng chuyn i tc . Thc hin chuyn i m thng tin t cc knh v tuyn (16 Kb/s) theo tiu chun GSM thnh cc knh thoi chun (64 Kb/s) trc khi chuyn n tng i.TRAU c th c t gn BSC hoc MSC.C th ghp knh theo t l 4:1 tc l thc hin chuyn i m thng tin t cc knh thoi chun (64 Kb/s) thnh cc knh v tuyn (16 Kb/s) theo tiu trc khi chuyn n tng i. Bn knh 16 Kbps t TRAU c th c lp t trn mi ng 64Kbps. V th, 30 knh tc 2Mbps ca tuyn PCM c th mang 120 knh GSM nhm tit kim chi ph v gim cc ng kt ni n BSC.2.2.2.3 Khi BSC Qun l tt c giao din v tuyn thng qua cc lnh iu khin t xa. Cc lnh ny ch yu l lnh n nh, gii phng knh v tuyn v chuyn giao. BSC va ni vi BTS, va ni vi MSC thng qua TRAU. Giao din gia TRAU v MSC l giao din A, gia TRAU v BSC l giao din Ater, cn giao din gia BTS v BSC l giao din Abis. Cc chc nng chnh ca BSC- Qun l mng v tuyn- Qun l trm v tuyn gc BTS- iu khin ni thng cc cuc gi t BTS n BSC- Qun l mng truyn dn- iu khin hot ng ca cc BTS2.2.2.4 PCUc dng truy cp vo GPRS, PCU cn phi kt ni vi BSC v kt ni vi SGSN trn nn chuyn mch gi, 2.2.3. Phn h chuyn mch SSPhn h chuyn mch bao gm cc khi chc nng sau:+ Tng i chuyn mch di ng MSC+ Thanh ghi nh v thng tr HLR+ Thanh ghi nh v tm tr VLR+ Trung tm nhn thc AuC+ Thanh ghi nhn dng thit b EIRChc nng chnh ca SS l qun l thng tin gia nhng ngi s dng mng GSM vi nhau v vi mng khc. Trung tm chuyn mch di ng MSC- MSC thc hin cc chc nng chuyn mch, nhim v chnh ca MSC l to kt ni v x l cuc gi n nhng thu bao ca GSM.- MSC giao tip vi phn h BSS v mt khc giao tip vi mng ngoi qua tng i cng GMSC (Gateway MSC).- Chc nng chnh ca tng i MSC: X l cuc gi (Call Processing) iu khin chuyn giao (Handover Control) Qun l di ng (Mobility Management) Tng tc mng IWF(Interworking Function) qua GMSC B ghi nh v thng tr HLR- HLR l c s d liu tham chiu lu gi lu di cc thng tin v thu bao, cc thng tin lin quan ti vic cung cp cc dch v vin thng. HLR khng ph thuc vo v tr hin thi ca thu bao v cha cc thng tin v v tr hin thi ca thu bao.- HLR bao gm Cc s nhn dng: IMSI, MSISDN (Mobile Subscriber ISDN)+ IMSI (International Mobile Subscriber Identity) l m s duy nht cho mi thu bao trong mt vng h thng GSM. IMSI c ghi trong MS v trong HLR v b mt vi ngi s dng.+ MSISDN c s dng bi MSC truy nhp HLR khi cn thit lp cuc ni. Mi thu bao di ng u c mt s my MSISDN c ghi trong danh b in thoi. Cc thng tin v thu bao Danh sch cc dch v m MS c s dng v b hn ch S hiu VLR ang phc v MS B ghi nh v tm tr VLR- VLR l mt c s d liu cha thng tin v tt c cc MS hin ang vng phc v ca MSC- Mi MSC c mt VLR, thng thit k VLR ngay trong MSC- VLR l c s d liu trung gian lu tr tm thi thng tin v thu bao trong vng phc v MSC/VLR c tham chiu t c s d liu HLR- VLR bao gm Cc s nhn dng: IMSI, MSISDN, TMSI (Temporaly Mobile subscriber Identity)+ TMSI do VLR t to ra trong c s d liu ca n cng vi IMSI sau khi vic kim tra quyn truy nhp ca thu bao l hp l. TMSI c s dng cng vi LAI (Location Area Identity) a ch ho thu bao trong BSS v truy nhp s liu ca thu bao trong c s d liu ca VLR. S hiu nhn dng vng nh v ang phc v MS Danh sch cc dch v m MS c v b hn ch s dng Trng thi ca MS ( bn: busy; ri: idle) Thanh ghi nhn dng thit b EIR- EIR c chc nng kim tra tnh hp l ca ME thng qua s liu nhn dng di ng quc t (IMEI-International Mobile Equipment Identity) v cha cc s liu v phn cng ca thit b Trung tm nhn thc AuC- AuC c ni n HLR, chc nng ca AuC l cung cp cho HLR cc tn s nhn thc v cc kho mt m s dng cho bo mt. - ng v tuyn cng c AuC cung cp m bo mt chng nghe trm, m ny c thay i ring bit cho tng thu bao.

2.2.4. Qa trnh x l cuc gi Qu trnh x l cuc gi t thu bao di ng ti thu bao c nh

Hnh 2.6 S cuc gi t thu bao di ng n thu bao c nh Vi cuc gi khi u t trm di ng, MSC ph trch cell m trm di ng trc thuc s nhn c bn tin thit lp cuc gi t MS thng qua BTS c cha s thoi ca thu bao di ng b gi. MSC (hay GMSC) s phn tch s MSISDN (The Mobile Station ISDN) ca thu bao b gi tm ra HLR ni MS ng k. MSC (hay GMSC) s hi HLR thng tin c th nh tuyn n MSC/VLR qun l MS. HLR s tr li, khi MSC (hay GMSC) ny c th nh tuyn li cuc gi n MSC cn thit. Khi cuc gi n MSC ny, VLR s bit chi tit hn v v tr ca MS. Nh vy, ta ni thng c cuc gi t thu bao di ng ti thu bao c nh mng GSM. Nu gi trc tip n cc quc gia khc, th MSC phi nh tuyn n trung tm chuyn mch quc t (International Switching Center), cn trong trng hp gi n thu bao trong nc th MSC phi c nh tuyn n PSTN v thit lp vic kt ni n thu bao PSTN. Khi , MSC thc hin vic gi in tng t nh khi gi trc tip n ISDN (Integrated Services Digital Network). Qu trnh x l cuc gi t thu bao c nh ti thu bao di ng

Hnh 2.7 S cuc gi t thu bao c nh n thu bao di ng Khi cuc gi khi u t mng c nh PSTN th tng i sau khi phn tch s thoi s bit y l cuc gi cho mt thu bao di ng. Cuc gi s c nh tuyn n tng i cng GMSC gn nht. GMSC s phn tch s MSISDN (The Mobile Station ISDN) ca thu bao b gi tm ra HLR ni MS ng k v GMSC s hi HLR thng tin c th nh tuyn n MSC/VLR qun l MS. S kt ni gia GMSC v MSC-B c nh tuyn thng qua mt hoc nhiu tng i chuyn tip ca ISDN hoc PSTN. Nh vy, ta ni thng c cuc gi t thu bao c nh ti thu bao di ng mng GSM. Qu trnh x l cuc gi t thu bao di ng ti thu bao di ngGm c 3 trng hp xy ra Cuc gi gia cc MS thuc cng mt mng.- Cuc gi gia cc MS nhng khc PLMN v cng quc gia.- Cuc gi gia cc MS nhng khc PLMN v khc quc gia.2.2.4.1.1. Cuc gi gia cc MS thuc cng mt PLMN

Hnh 2.9 S cuc gi gia hai MS thuc cng mt mng- hnh trn cho ta thy qu trnh din ra cuc gi gia MS-A v MS-B thuc cng PLMN. MSC-A s tin hnh phn tch s ca thu bao b gi MS-B thng qua VLR v hi HLR tm MSRN (Mobile Station Roaming Number _ S vng lai ca thu bao di ng) nh tuyn cuc gi n MSC-B. MSC-B hot ng nh mt tng i chuyn tip v thit lp cuc gi n MS-B. Qa trnh kt ni gia hai MSC c nh tuyn thng qua mt hay nhiu tng i chuyn tip ca ISDN hay PSTN ca quc gia.2.2.4.1.2. Cuc gi gia cc MS nhng khc mng v cng quc gia

Hnh 2.10 S cuc gi gia hai MS nhng khc mng v cng quc gia hnh ny cho ta thy qu trnh din ra cuc gi gia MS-A thuc mng ny v MS-B thuc mng khc. MSC-A s tin hnh phn tch s ca thu bao b gi MS-B v hi HLR ca mng khc tm MSRN (Mobile Station Roaming Number _ S vng lai ca thu bao di ng) nh tuyn cuc gi n MSC-B. MSC-B hot ng nh mt tng i chuyn tip v thit lp cuc gi n MS-B.

2.2.4.1.3. Cuc gi gia cc MS nhng khc PLMN v khc quc gia

Hnh 2.11 S cuc gi gia hai MS nhng khc mng v khc quc gia hnh trn cho ta thy qu trnh din ra cuc gi gia MS-A thuc mng 1 ca quc gia 1 vi MS-B thuc mng 2 ca quc gia 2. MSC-A tin hnh xc nh m quc t gi trc tip n quc gia 2 nhng khng th xc nh c v tr cuc gi t MS. V th, cuc gi c nh tuyn n cng MSC (GMSC) ca quc gia 2. Ti y, GMSC s tin hnh hi HLR tm ra MS-B c nh v vng MSC no v tm MSRN nh tuyn cuc gi n MSC-B. MSC-B hot ng nh mt tng i chuyn tip v thit lp cuc gi n MS-B. S kt ni gia GMSC v bt k MSC no c nh tuyn thng qua mt hay nhiu tng i chuyn tip ca ISDN hay PSTN ca quc gia. Handover Control Trong mng thng tin di ng t bo, khi thu bao di ng di chuyn t cell ny sang cell khc th cuc gi hoc b rt hoc t ng chuyn t knh v tuyn ny sang mt knh khc thuc cell khc. trnh hin tng rt mng, ta s dng Handover. Handover gip cho cuc gi c lin tc. Qu trnh Handover xy ra khi h thng thng tin di ng t ng chuyn cuc gi t knh v tuyn ny sang knh v tuyn khc khi thu bao di ng di chuyn t cell ny sang cell khc lin k vi n. Trong qu trnh m thoi, hai thu bao cng chim mt knh thoi. Khi mt thu bao di ng di chuyn ra khi vng ph sng ca cell cho trc, tn hiu u thu ca cell ny s gim. Khi , cell ang s dng s yu cu mt Handover (chuyn giao) n h thng. H thng s chuyn cuc gi n mt cell c tn s vi cng tn hiu thu mnh hn m khng lm gin on cuc gi hay gi cnh bo n ngi s dng. Cuc gi s c tip tc m ngi s dng khng nhn thy qu trnh Handover din ra. Mobility Management Xy ra khi mt my di ng di chuyn t BTS ny n BTS k tip Tng tc mng IWF kt ni MSC vi mt s mng khc cn phi thch ng cc c im truyn dn ca mng GSM vi cc mng ny. Cc thch ng ny gi l chc nng tng tc IWF (Inter Networking Function). IWF bao gm mt thit b thch ng giao thc v truyn dn Trong mng 2G, IWF l thnh phn m c kh nng cung cp d liu cho chuyn mch knh.Phn h khai thc v bo dng (OSS)OSS (Operation and Support System) thc hin 3 chc nng chnh Khai thc v bo dng mng Qun l thu bao v tnh cc Qun l thit b di ng2.2.5.1 Khai thc v bo dng mng Khai thc Cho php nh khai thc mng theo di hnh vi ca mng nh ti ca h thng, mc chn, s lng chuyn giao gia hai cell c th gim st c ton b cht lng dch v m h cung cp cho khch hng v kp thi nng cp. Thay i cu hnh gim nhng vn xut hin thi im hin thi, chun b tng lu lng trong tng lai v m rng vng ph sng. Bo dng C nhim v pht hin, nh v v sa cha cc s c v hng hc, n c mt s quan h vi khai thc.2.2.5.2 Qun l thu bao v tnh cc Bao gm cc hot ng qun l ng k thu bao. Nhim v u tin l nhp v xo thu bao khi mng. Tnh cc cc cuc gi ri gi n thu bao.2.2.5.3 Qun l thit b di ng c thc hin bi EIR EIR lu tr ton b d liu lin quan n trm di ng MS. EIR c ni n MSC qua ng bo hiu kim tra tnh hp l ca thit b.

PHN 3: TNG QUAN V MNG 3G3.1 Kin trc 3G WCDMA UTMS R3 WCDMA UMTS R3 h tr c kt ni chuyn mch knh ln chuyn mch gi tc 384 Mbps trong min CS v 2 Mbps trong min PS. Mt mng UMTS bao gm ba phn: + Thit b ngi dng (UE: User Equipment) gm ba thit b - Thit b u cui (TE: Terminal Equipment) - Thit b di ng (ME: Mobile Equipment) - Module nhn dng thu bao UMTS (USIM: UMTS Subscriber Identity Module)+ Mng truy nhp v tuyn mt t UMTS (UTRAN: UMTS Terrestrial Radio Network) gm cc h thng mng v tuyn (RNS: Radio Network System) - Mi RNS bao gm RNC (Radio Network Controller: b iu khin mng v tuyn) v cc node B ni vi n.+ Mng li (CN: Core Network) gm - Min CS (Min chuyn mch knh)- Min PS (Min chuyn mch gi)- HE (Home Environment: Mi trng nh). HE bao gm cc c s d liu: AuC (Authentication Center:Trung tm nhn thc), HLR (Home Location Register: B ghi nh v thng tr) v EIR (Equipment Identity Register: Thanh ghi nhn dng thit b).

Hnh 3.1 Kin trc 3G WCDMA UMTS R33.2 Thit b ngi dng UE- UE l u cui mng UMTS ca ngi s dng, giao tip gia ngi s dng vi h thng.3.2.1 Thit b u cui TE- Thit b u cui h tr hai giao din. + Giao din Uu: lin kt v tuyn, m nhim ton b kt ni vt l vi mng UMTS.+ Giao din R: lin kt gia TE v ME.3.2.2 Thit b di ng ME+ Giao din Cu: lin kt gia ME v USIM, tun theo tiu chun cho cc card thng minh. ng dng USIM chy trn giao din ny.3.2.3 USIM+ USIM cha cc hm v s liu cn nhn dng v nhn thc thu bao trong mng UMTS, thc hin cc thut ton nhn thc, lu gi cc kha nhn thc v mt s thng tin thu bao cn thit cho u cui. N c th lu c bn sao h s ca thu bao.+ Ngi s dng phi t mnh nhn thc i vi USIM bng cch nhp m PIN, m bo rng ch ngi s dng ch thc mi c truy nhp mng UMTS. Mng s ch cung cp cc dch v cho ngi no s dng u cui da trn nhn dng USIM c ng k.3.3 Mng truy nhp v tuyn mt t UMTS- UTRAN (UMTS Terrestrial Radio Access Network: Mng truy nhp v tuyn mt t UMTS) l lin kt gia ngi s dng v CN. N gm cc phn t m bo cc cuc truyn thng UMTS trn v tuyn v iu khin chng. - UTRAN c nh ngha gia hai giao din. + Giao din Iu gia UTRAN v CN, gm hai phn l giao din IuPS cho min chuyn mch gi v IuCS cho min chuyn mch knh.+ Giao din Uu gia UTRAN v thit b ngi s dng. Gia hai giao din ny l hai node RNC v node B.3.3.1 RNC- RNC (Radio Network Controller: iu khin mng v tuyn) chu trch nhim cho mt hay nhiu trm gc v iu khin cc ti nguyn ca chng.- L im truy nhp dch v m UTRAN cung cp cho CN, c ni n CN bng hai kt ni, mt cho min chuyn mch gi (n GPRS) v mt n min chuyn mch knh (MSC). - Bo v s b mt v ton vn.- RNC c nhiu chc nng logic ty thuc vo vic n phc v node no. Ngi s dng c kt ni vo mt RNC phc v (SRNC: Serving RNC). Khi ngi s dng chuyn vng n mt RNC khc nhng vn kt ni vi RNC c, mt RNC tri (DRNC: Drift RNC) s cung cp ti nguyn v tuyn cho ngi s dng, nhng RNC phc v vn qun l kt ni ca ngi s dng n CN.- Vai tr logic ca SRNC v DRNC c m t trn hnh 3.2.

Hnh 3.2 Vai tr logic ca SRNC v DRNC- Khi UE trong chuyn giao mm gia cc RNC, tn ti nhiu kt ni qua Iub v c t nht mt kt ni qua Iur. Ch mt trong s cc RNC ny (SRNC) l m bo giao din Iu kt ni vi mng li cn cc RNC khc (DRNC) ch lm nhim v nh tuyn thng tin gia cc Iub v Iur. - Chc nng cui cng ca RNC l RNC iu khin (CRNC: Control RNC). Mi node B c mt RNC iu khin chu trch nhim cho cc ti nguyn v tuyn ca n.3.3.2 Node B (trm gc)- C nhim v l thc hin kt ni v tuyn vt l gia u cui vi n. N nhn tn hiu trn giao din Iub t RNC v chuyn n vo tn hiu v tuyn trn giao din Uu.- Node B kim tra cng sut thu t cc u cui khc nhau v thng bo cho chng gim cng sut hoc tng cng sut sao cho node B lun thu c cng sut nh nhau t tt c cc u cui.3.4 Mng li CN Mng li (CN) c chia thnh ba min Min PS m bo cc dch v s liu cho ngi s dng bng cc kt ni n Internet v cc mng s liu khc. Min CS m bo cc dch v in thoi n cc mng khc bng cc kt ni TDM. HE (Mi trng nh) Cc node B trong CN c kt ni vi nhau bng ng trc ca nh khai thc, thng s dng cc cng ngh mng tc cao nh ATM v IP. Mng ng trc trong min CS s dng TDM cn trong min PS s dng IP.3.4.1 SGSN- SGSN (SGSN: Serving GPRS Support Node: node h tr GPRS phc v) l node chnh ca min chuyn mch gi. N ni n UTRAN thng qua giao din IuPS v n GGSN thng qua giao din Gn. - SGSN chu trch nhim cho tt c kt ni PS ca tt c cc thu bao.- SGSN lu hai kiu d liu thu bao: thng tin ng k thu bao v thng tin v tr thu bao.3.4.5 GGSNGGSN (Gateway GPRS Support Node: Node h tr GPRS cng) l mt SGSN kt ni vi cc mng s liu khc. Tt c cc cuc truyn thng s liu t thu bao n cc mng ngoi u qua GGSN. Cng nh SGSN, n lu c hai kiu s liu: thng tin thu bao v thng tin v tr.3.4.6 BGBG (Border Gatway: Cng bin gii) l mt cng gia min PS ca PLMN vi cc mng khc. Chc nng ca node ny l m bo mng an ninh chng li cc tn cng bn ngoi.3.4.7 VLR- VLR (Visited Location Register: b ghi nh v tm tr) l bn sao ca HLR cho mng phc v (SN: Serving Network). - D liu thu bao cn thit cung cp cc dch v thu bao c copy t HLR v lu y. C MSC v SGSN u c VLR ni vi chng.3.4.8 MSC MSC thc hin cc kt ni CS gia u cui v mng. Chc nng MSC l bo hiu v chuyn mch cho cc thu bao trong vng qun l ca mnh. Cc kt ni CS c thc hin trn giao din CS gia UTRAN v MSC. Cc MSC c ni n cc mng ngoi qua GMSC.3.4.9 GMSC Chc nng ca GMSC l nh tuyn n vng c MS. Khi mng ngoi tm cch kt ni n PLMN ca mt nh khai thc, GMSC nhn yu cu thit lp kt ni v hi HLR v MSC hin thi qun l MS. 3.4.10 HE HE lu cc h s thu bao ca hng khai thc. Cung cp cho cc mng phc v (SN: Serving Network) cc thng tin v thu bao v v cc cn thit nhn thc ngi s dng v tnh cc cho cc dch v cung cp.3.4.10.1 HLRHLR c nhim v qun l cc thu bao di ng.HLR cha IMSI (International Mobile Subsscriber Identity: s nhn dng thu bao di ng quc t), t nht mt MSISDN (Mobile Station ISDN: s thu bao c trong danh b in thoi) v t nht mt a ch PDP (Packet Data Protocol: Giao thc s liu gi).HLR cn lu gi thng tin v SGSN v VLR nh tuyn v tnh cc cc cuc gi. HLR lu gi mi thng tin v ngi s dng v ng k thu bao nh thng tin tnh cc, cc dch v no c cung cp v cc dch v no b t chi v thng tin chuyn hng cuc gi.3.4.10.2 AuC AuC lu gi ton b s liu cn thit nhn thc, mt m ha v bo v s ton vn thng tin cho ngi s dng. AuC lin kt vi HLR v c thc hin cng vi HLR trong cng mt node vt l.3.4.10.3 EIR EIR (Equipment Identity Register) chu trch nhim lu cc s nhn dng thit b di ng quc t (IMEI: International Mobile Equipment Identity).3.5 Mng ngoiCc mng ngoi khng phi l b phn ca h thng UMTS, nhng chng cn thit m bo truyn thng gia cc nh khai thc.Cc mng ngoi c th l cc mng in thoi nh+ PLMN (Public Land Mobile Network: mng di ng mt t cng cng)+ PSTN (Public Switched Telephone Network: Mng in thoi chuyn mch cng cng)+ ISDN (Integrated Service Digital Network: Mng s tch hp dch v) hay cc mng s liu nh Internet. Min PS kt ni n cc mng s liu cn min CS ni n cc mng in thoi.3.6 Cc giao din chnh Giao din Cu: Giao din Cu l giao din chun cho cc card thng minh. Trong UE y l ni kt ni gia USIM v ME Giao din Uu: Giao din Uu l giao din v tuyn ca WCDMA trong UMTS. y l giao din m qua UE truy nhp vo phn c nh ca mng. Giao din ny ni gia node B v UE. Giao din Iu: Giao din Iu kt ni UTRAN v CN. N gm hai phn, IuPS cho min chuyn mch gi, IuCS cho min chuyn mch knh. CN c th kt ni n nhiu UTRAN cho c giao din IuCS v IuPS. Nhng mt UTRAN ch c th kt ni n mt im truy nhp CN. Giao din Iur: y l giao din RNC-RNC. Ban u c thit k m bo chuyn giao mm gia cc RNC, nhng trong qu trnh pht trin nhiu tnh nng mi c b sung. Giao din ny m bo bn tnh nng ni bt sau:1. Di ng gia cc RNC2. Lu thng knh ring3. Lu thng knh chung4. Qun l ti nguyn ton cc Giao din Iub: Giao din Iub ni nt B v RNC. Khc vi GSM y l giao din m.

PHN 4: TNG QUAN V OMC-R4.1 Gii thiu tng quan v OMC OMC (Operation and Maintenance Center): trung tm vn hnh, bo dng. OMC ti Vinaphone c phn theo ba chc nng:+ OMC-R (Operation and Maintenance Center Radio): trung tm vn hnh, qun l phn t v tuyn (BTS/BSC/TRAU)+ OMC-S (Operation and Maintenance Center Switched): trung tm vn hnh, qun l phn t mng li (Tng i, core)+ OMC-IP: Vn hnh v khai thc cc phn t lin quan n mng IP.4.2 Gii thiu v OMC-R OMC-R (Operation and Maintenance Center Radio): trung tm vn hnh, qun l phn t v tuyn. Cu trc c bn ca h thng OMC-R

Hnh 4.1 S cu trc c bn ca h thng OMC-R Cc tn hiu gim st, qun l h thng BSS truyn v cc Server thng qua giao tip chuyn mch gi X.25 hoc giao tip IP a v trung tm OMC x l H iu hnh cc Server l h iu hnh UNIX. Cc ng kt ni gia cc OMC client vi OMC server l mng LAN thng thng.Mt s chc nng chnh ca OMC-R Qun l li Qun l cnh bo Qun l cht lng mng v tuyn Qun l cu hnh mng Qun l ti Qun l li: qun l tt c cc li lin quan n BSS, tnh trng hot ng ca h thng BSS. Qun l cnh bo: a ra cc loi cnh bo v ngun in, truyn dn v thit b. Qun l cht lng mng v tuyn: theo di cht lng lin quan n thit lp cuc gi, cht lng cuc gi v a ra cc cnh bo ngi qun l theo di, a ra cc tiu ch nh gi cht lng ca h thng.Cc tham s qun l cht lng mng v tuyn nh sau:+ T l thit lp cuc gi thnh cng+ T l rt cuc gi+ T l Handover thnh cng+ T l nghn+ Lu lng cuc gi Qun l cu hnh mng: qun l nng lc ca BSC, cu hnh ca trm, tng hoc gim cu hnh mng cho ph hp vi nhu cu thc t. Qun l ti: l mt phn ca qun l cu hnh

Vinaphone 3 c nhng h thng gim st thit b nh: Motorola Ericsson Huawei ZTETuy theo tng loi thit b, nh mng s login vo tng server tng ng gim st cc h thng thng qua giao din GUI trn nn UNIX. Mi h thng s c tp lnh tng ng thao tc khi cn x l li.Hin nay,Vinaphone bn cnh login vo cc server ca tng thit b, Vinaphone xy dng cng c gim st cnh bo ca tt c cc h thng thng mt trang web iu hnh thng tin duy nht. Trang web chi phc v mc ch view cnh bo, khi cn x l, nh mng vn cn phi login vo trc tip BSC x l.C hai trang web gim st h thng 2G, 3G. Cc Vin thng Tnh c th login vo trang web gim st cnh bo ti tng Tnh ch ng kim tra v khc phc s c mt cch nhanh nht. Cc Vin thng Tnh kim tra v ghi ch cc nguyn nhn s c ln web iu hnh cng theo di.

Web iu hnh thng tin 2G

Hnh 4.2 Giao din web iu hnh thng tin 2GWeb gim st cnh bo 2G

Hnh 4.3 Giao din web gim st cnh bo 2G

Web gim st cnh bo 2G

Hnh 4.4 Giao din web gim st cnh bo 3G

M hnh gim st, cnh bo ca Motorola

Hnh 4.5 M hnh OMC-R trong mng GSM4.3 Quy trnh x l li lin quan n mt lin lc 1 trm BTS Khi mt trm c cnh bo a v OMC, ngi vn hnh h thng s kim tra cc nguyn nhn c th gy mt lin lc nh: ngun in, thit b, truyn dn. Nu c km theo cnh bo ngun th ta phi a ra cc quyt nh tng ng khi phc li trm, m bo trm vn hot ng bnh thng. Nu xy ra cnh bo mt lin lc ti BTS c gi ti OMC, trc ht chng ta cn xc nh ti khu vc t trm c m bo ngun cho h thng hot ng n nh khng. Nu ti khu vc vn m bo ngun th chng ta kim tra ng truyn tn hiu c hot ng tt khng. thc hin vic ny, ta kim tra truyn dn bng cch loop truyn dn ti BTS v BSC. V nu vng loop ca ng truyn tn hiu l vng kn th ng truyn cho h thng BTS vn m bo. Nguyn nhn cui cng c th kim tra l v thit b ti trm BTS. Ta s kim tra phn cng ca trm nh card iu khin, cable kt ni c m bo hay khng? V nu s dng cc bin php nghip v thay th nhng vn khng em li kt qu th chng ta phi nh n nh cung cp thit b c h tr. Ngoi cc yu t trn vn c nhng yu t khch quan khc d kim tra ti trm ngun, truyn dn v thit b vn tt nhng ti OMC vn c a ra cnh bo cho h thng th c th l do s suy gim cht lng tn hiu trong ng truyn nh t l BER. Ty vo tng trng hp c th m chng ta c nhng phng n khc phc.4.4 Giao din c bn ca bn h thng gim st4.4.1 Ericsson

Hnh 4.6 Giao din c bn ca h thng gim st Ericsson4.4.2 Motorola

Hnh 4.7 Giao din c bn ca h thng gim st Motorola4.4.3 Huawei

Hnh 4.8 Giao din c bn ca h thng gim st Huawei4.4.4 ZTE

Hnh 4.9 Giao din c bn ca h thng gim st ZTE4.5 Cc loi cnh bo ca h thng Huawei4.5.1 Cnh bo ngun

Hnh 4.10 Giao din cnh bo ngun ca Huawei4.5.2 Cnh bo truyn dn

Hnh 4.11 Giao din cnh botruyn dn ca Huawei4.6 Giao din GUI ca cc h thng4.6.1 H thng Motorola

Hnh 4.12 Giao din GUI ca h thng Motorola

4.6.2 H thng ZTE

Hnh 4.13 Giao din GUI ca h thng ZTE

MC LCDANH MC T VIT TT3PHN 1: TNG QUAN V TRUNG TM DCH V VIN THNG KV351.1Gii thiu51.2Cc trung tm ca cng ty Vinaphone71.3Trung tm dch v vin thng khu vc III (Vinaphone 3)7PHN 2: TNG QUAN V MNG 2G92.1.M hnh h thng thng tin di ng GSM92.2.Cc thnh phn chc nng trong h thng112.2.1.Trm di ng MS112.2.2.Phn h trm gc BSS112.2.2.1Khi BTS132.2.2.2TRAU132.2.2.3Khi BSC132.2.2.4PCU142.2.3.Phn h chuyn mch SS142.2.3.1.Trung tm chuyn mch di ng MSC142.2.3.2.B ghi nh v thng tr HLR142.2.3.3.B ghi nh v tm tr VLR152.2.3.4.Thanh ghi nhn dng thit b EIR152.2.3.5.Trung tm nhn thc AuC162.2.4.Qa trnh x l cuc gi172.2.4.1.Qu trnh x l cuc gi t thu bao di ng ti thu bao c nh172.2.4.2.Qu trnh x l cuc gi t thu bao c nh ti thu bao di ng182.2.4.3.Qu trnh x l cuc gi t thu bao di ng ti thu bao di ng192.2.4.3.1.Cuc gi gia cc MS thuc cng mt PLMN192.2.4.3.2.Cuc gi gia cc MS nhng khc mng v cng quc gia202.2.4.3.3.Cuc gi gia cc MS nhng khc PLMN v khc quc gia212.2.5Phn h khai thc v bo dng (OSS)222.2.5.1Khai thc v bo dng mng232.2.5.2Qun l thu bao v tnh cc232.2.5.3Qun l thit b di ng23PHN 3: TNG QUAN V MNG 3G243.1Kin trc 3G WCDMA UTMS R3243.2Thit b ngi dng UE253.2.1Thit b u cui TE253.2.2Thit b di ng ME253.2.3USIM253.3Mng truy nhp v tuyn mt t UMTS263.3.1RNC263.3.2Node B (trm gc)273.4Mng li CN273.4.1SGSN273.4.5GGSN283.4.6BG283.4.7VLR283.4.8MSC283.4.9GMSC283.4.10HE283.4.10.1HLR293.4.10.2AuC293.4.10.3EIR293.5Mng ngoi293.6Cc giao din chnh30PHN 4: TNG QUAN V OMC-R314.1Gii thiu tng quan v OMC314.2Gii thiu v OMC-R314.3Quy trnh x l li lin quan n mt lin lc 1 trm BTS364.4Giao din c bn ca bn h thng gim st374.4.1Ericsson374.4.2Motorola384.4.3Huawei384.4.4ZTE394.5Cc loi cnh bo ca h thng Huawei394.5.1Cnh bo ngun394.5.2Cnh bo truyn dn394.6Giao din GUI ca cc h thng404.6.1H thng Motorola404.6.2H thng ZTE41

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