CHƯƠNG IV Thot Not

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Nghin cu h thng thng tin quang Tht Nt

CHNG IV: H THNG THNG TIN QUANG THT NT Cng nh cc h thng thng tin quang khc h thng thng tin quang Tht Nt, cng tun thu theo cc nguyn l v cu trc c bn ca h thng thng tin quang. Trong chng ny chng ta tm hiu v s cu trc h thng thng tin quang Tht Nt gm: Lch s hnh thnh, s cu trc h thng, mng chuyn mch cng nh mng truyn dn,mng FTTH ca h thng thng tin quang Tht Nt.

4.1 c im chung ca Q. Tht Nt_TP Cn Th :

Qun Tht Nt c v tr nm v pha bc ca tnh Cn Th. a l hnh chnh c chia lm 6 Phng . Din tch t nhin : 585 km2, trong ch yu phn ln l t canh tc nng nghip. a bn Qun Tht Nt c nhiu ng giao thng thy b chnh i qua, thun li cho vic pht trin kinh t x hi. V a gii hnh chnh: pha bc ca

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huyn theo trc l 91 tip gip Thnh ph Long Xuyn, An Giang; Pha ty nam gip quc l 80; Song song vi Quc l 80 cn c Kinh Ci Sn, y l ng thy ngn nht v l ng giao thng chnh vn chuyn v trao i hng ha gia vng T gic Long Xuyn vi cc tnh ln ln cn v thnh ph H Ch Minh. Kinh t pht trin theo hng tng t trng thng mi dch v cho nn thun li cho vic pht trin cc dch v BCVT. Tuy nhin tnh hnh dn c phn b khng tp trung cho nn vic u t pht trin mng li tn km v hiu sut cha cao.

4.2 c im Trung Tm Vin Thng Tht Nt4.2.1 Lch s hnh thnh 4.2.2 S cu trc h thng

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4.3.1 Mng chuyn mch Cn c vic nh gi mng thc nh sau: trm v tinh CSND hin c, vi tng dung lng 14.080 lines, ti cc khu vc nh sau: V tinh Alcatel Stt T n trm Tht Nt (UR15) Thi Thun Trung An Thun Hng Tn Lc T Chng oi L p t s4,096 2,560 2,304 3,072 2,048

S d ng s3,677 2,077 1,889 2,216 1,231

1 2 3 4 5

Bas MA,MM Bas MA Bas MA Bas MA,MM Bas MA,MM

4.3.2 Mng xDSL Theo s liu thng k hin ti h thng cung cp dch v ti Trung Tm Vin Thng Tht Nt v ang khai thc vi dung lng lp t hin hu bao gm :

Stt 1 2 3 4 5

T n trm Tht Nt Trung An Thi Thun Tn Lc Thun Hng

Chng oi ISAM 7302 ISAM 7302 ISAM 7302 ISAM 7302 ISAM 7302

ADSL (Port) L p t S d ng 816 737 240 225 384 375 192 174 384 236

Cn c d n Nng cao cht lng dch v rt ngn c ly thu bao h thng cung cp dch v ADSL ti cc trm v tinh v nng cp kh nng cung cp dch v ADSL cc thit b mng ca VTN giai on nm 2012 - 2013 c VNPT Cn Th ph duyt ti quyt nh u t s 257/Q-VNPTCTO ngy 09/08/2011, mng

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xDSL Trung Tm Vin Thng Tht Nt giai on 2012 - 2013 s tng thm dung lng cho cc trm hin hu v m rng thm cc nud mng sau :ADSL (Port) Dung Lng L p t ghi ch Thm 816 tng dung lng 96 384 240 384 192 192 192 144 144 m trm mi m trm mi tng dung lng tng dung lng m trm mi tng dung lng m trm mi m trm mi tng dung lng

Stt

T n trm

Chng oi ISAM 7302 ISAM 7302 ISAM 7302 ISAM 7302 ISAM 7302 ISAM 7302 ISAM 7302 ISAM 7302 ISAM 7302 ISAM 7302

1 2 3 4 5 6 7 8 9 10

Tht Nt Trung Nht B t Trung An Thi Thun Vnh Trinh Tn Lc Tn Hng Tn M Thun Hng

4.3.3 Mng FTTH : Dch v FTTH ti Trung Tm Vin Thng Tht Nt c trin khai u nm 2011, hin ti ch phc v khu vc trung tm qun vi dung lng sau :T n trm L2 Switch Stt Chng oi L p t (port) S d ng (port)

1 2

Tht Nt Tht Nt

Alcatel 6400 Alcatel 6400

24 24

24 18

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Giai on nm 2012 2013 s m rng cc a im sau :L2 Switch Stt T n trm Chng oi Alcatel 6400 Alcatel 6400 Alcatel 6400 Alcatel 6400 Alcatel 6400 Alcatel 6400 L p t port 24 24 12 24 24 24

1 Tht Nt 2 B t 3 Trung An Thi 4 Thun Vnh 5 Trinh Thun 6 Hng

4.3.3.1. Thit b A cate Lucent 6400: L thit b Gigabit Ethernet L2, thuc dng Switch OmniStack 6400, c thit k vi vic m rng cu hnh Switch Gigabit Ethernet lp 2 (Layer 2) c kh nng stackable v kh nng nh tuyn c bn. C kh nng stackable, cho php m rng mng bng vic xp chng cc thit b. C y tnh nng p ng cho nhu cu trin khai mng FTTH; Switch OS6400 ang s dng c cu hnh bao gm 24 cng quang, c th c m rng cu hnh 48 ports; OmniStack 6400 s dng 1 ngun DC hoc AC Backup powerri cung cp gii php d phng ngun 1:1, ngun PoE (ngun qua Ethernet). c tnh k thut: Alcatel-Lucent OmniStack 6400 (OS6400-24) cung cp:

20 port RJ-45 c cu hnh vi tc 10/100/1000Mbps (t port 524); 4 port combo h tr SFP v 10/100/1000Base-T (t port 1-4) ; 2 port dng cho chng (stack) 10Gbps; 2 cng dng cho chng (stack);

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1 cng Console chun RJ-45; S lng Switch trong Stack: 8;

S lng port RJ-45 10/100/1000Mbps trong 1 Stack: 192; S lng SFP trong 1 Stack: 32; Ngun chnh (bn trong) 126W (AC); Ngun d phng (bn ngoi) 126W (AC) hoc 120W (DC);

Ngun hot ng:

Dung lng b nh trng: 128MB; Dung lng b nh RAM: 256MB SDRAM; Chiu rng: 17.32in (44.0 cm); Chiu cao: 1.73 in (4.4 cm); Kch thc khung ln nht: 9216 bytes; Nhit hot ng:

Nhit hot ng: 00C 450C; Nhit lu tr: -100C 700C;

Chun Ethernet: 802.3i (10BaseT), Cp CAT5 UTP; 802.3u (100BaseTX), Cp (CAT 5e/6 UTP, EIA/TIA 568); 802.3ab (1000Base-T), Cp (Cat -5e/6, UTP, EIA/TIA 568); 802.3z (1000Base-X), Cp (SMF, MMF) ; 802.3ah (EFM), Cp (SMF, MMF) ; 802.3ae (10Gbase-X) Cp: (SMF,MMF); Khong cch cp di nht (RJ-45): 100m.

Mi u t thit b:

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Hnh 4.2:Mt trc thit b L2 Switch 6400. Bng 4.3: Bng miu t chi tit thit b L2 Switch 6400. Item A LED ch th LED 7 on cung cp thnh phn ID stack. B Port USB Port 2.0 USB tc cao. C LED trng thi ca h thng Cung cp trng thi phn cng ca thit b , phn mm v ngun cung cp chnh, ngun d phng. D LED port 10/100/1000BaseT RJ45 Cung cp trng thi ca ng kt ni v lu lng trn port. E Port Console Port iu khin RS 232 vi u ni RJ-45. H tr vic truy nhp CLI iu khin cu hnh v qun l. F LED ch th port combo SFP Cung cp trng thi ng kt ni v lu lng cho b thu pht SFP. Mi u t - Gii thch Hnh dng

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G

Port combo SFP 4 u ni kt hp SFP (1-4) cho nhiu dng b thu pht SFP. Port l hng trn, port chn hng di.

H

Port 10/100/1000 BaseT RJ-45. C 20 port khng kt hp 10/100/1000BaseT (5 24) v 4 port 10/100/1000BaseT kt hp (1 4). Port l hng trn, port chn hng di. Bng 4.4: Bng trng thi LED thit b L2 Switch 6400. Led ch trng thi h thng: Trng thi Xanh lc Mu h phch Mu xanh nhp nhy Xanh lc Switch l n v chnh trong Stack hay switch hot ng 1 mnh. Switch l n v th cp. Switch ri ( khng l n v chnh, cng khng l n v th cp. Ngun chnh cung cp hot ng bnh thng. Ngun chnh cung cp b li. Ngun chnh khng c cung cp. Mi u t Phn mm h thng sn sng hot ng. Phn cng hay h thng b li. Trnh kim tra hot ng bnh thng

LED OK

PRI

Mu h phch n tt Xanh lc Mu h phch n tt

PWR

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Xanh lc BPS Mu h phch n tt Xanh lc Xanh nhp nhy 10/100/1000 Mu h phch Mu h phch nhp nhy n tt Xanh lc SFP Xanh nhp nhy n tt

Ngun d phng cung cp hot ng bnh thng Ngun d phng cung cp b li Ngun d phng khng c cung cp C ng link thc. Cc gi truyn hoc nhn trng thi nonPoE. C ng link PoE thc. Cc gi truyn hoc nhn trng thi PoE. Khng c ng link. C ng link thc Gi ang c truyn hoc nhn Khng c ng link.

4.3.3.1 Tuyn cp quang : Trong giai on 2010 - 2011, Trung Tm Vin Thng Tht Nt tp trung pht trin cp quang tin ti cp quang ho mng truyn dn ni ht,nng cao cht lng v an ton mng li, ng thi thay th v a cc tuyn viba ( qua thi gian s dng lu ngy suy gim cht lng) ra ngoi mng li. Trong giai on ny, ngoi vic u t mi cc tuyn cp quang v thit b quang cn phi sp xp t chc li m bo p ng dung lng truyn dn cho cc dch v (PSTN, di ng, ADSL.) ca cc trm v BTS. Cc tuyn cp quang cn trang b mi c ngh nh sau :

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1. Tuyn Thi Thun - BTS Vnh Trinh BTS Tht Nt 3 Tht Nt c di 40 Km kt hp vi tuyn hin hu hin c Tht Nt - B t - Thi Thun to thnh mch vng truyn dn ni ht nng cao cht lng v m bo an ton mng li. 2. . Tuyn cp quang Trung An BTS Trung Hng - Tn Hng - Thun Hng c di 45 Km kt hp vi tuyn hin hu hin c Tht Nt - Thun Hng to thnh mch vng truyn dn ni ht nng cao cht lng v m bo an ton mng li. 3. Tuyn cp quang treo Tn Lc BTS Tn Lc2 - Tn M - BTS Tn M c di 19 Km thay th thit b Viba . 4.3.3.2 Thit b truyn dn : TRUYN DN QUANG Stt T n trm T n thit b OSN3500 OSN 500 OSN 500 OSN 500 OSN500 Hng kt ni Cn Th Tht Nt Tht Nt Tht Nt Tht Nt S ng 11

L p t (E1) 19221

S d ng (E1) 60 16 12 5 11

1 2 3 4 5

Tht NtTrung An

Thi Thun Tn Lc Thun Hng

1 1 1

63 21 56

4.3.3.2.1 Thit b truyn dn OSN 3500 : 4.3.3.2.2 Thit b truyn dn OSN 500 : OptiX Metro 500 c thit k nhm ci thin kh nng khai thc v qun l cc dch v bng rng trong mng truyn dn quang. Thit b c th truyn dn v qun l cc dch v STM -1, E1/T1, N*64, dch v Ethernet. Vi tch hp cao d dng lp t v s dng c nhiu kiu ngun in . Thit b OptiX Metro 500 c th cung cp mt s chc nng sau:

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H tr truy cp cc tn hiu nh: PDH, SDH, dch v Ethernet, dch v dch v Nx64k thng qua cc chun giao tip: V.35, X.21, RS-449, EIA530. Truyn dn kt hp cc tn hiu: PDH, SDH, Ethernet, Nx64k trn cng mt thit b. C th kt ni c vi cc thit b quang khc nh: OptiX155/622H, OptiX +, OptiX 10G bng giao tip SDH xy dng mng truyn dn SDH chun. Thng qua cc giao din PDH, Ethernet, Nx64k kt ni vi thit b truy nhp mng, trm GSM gc, trm ETS gc, cc b chuyn mch, b nh tuyn xy dng mng thng tin. Tc truy cp cao nht l: 155Mb/s (STM-1). Cn nng : 4,6 Kg Cng sut: 35W

- B ngun:

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C 3 loi ngun chnh: -48VDC/-60VDCv +24VDC hoc 220VAC/ 110 V AC cp ngun hot ng cho thit b. Ty yu cu m ngi s dng la chn ngun hot ng cho ph hp. Thc hin chc nng lc EMC cho ng vo ca ngun. Thc hin chc nng n nh in p cho cc thit b .

- Qut v b c kh:

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Chc nng chnh l lm mt v thng gi thit b OptiX Metro 500, nhm trnh h hng thit b do nhit cao. Thit b OptiX Metro 500 c th gim st s hot ng ca qut nh tn hiu cnh bo t board qut gi n b SCC (FAN_FAIL).

- Khu vc chnh ca Board:

Gm slot gn board ngun, slot gn board fan, board ISU , slot Extended c th gn vo board nh SP2D, Nx64,ET1D, EFT.

- Chc nng phn t mng u cui:

Bo giao tiep

STM-1 Ethernet, E1/T1,Nx64K Ethernet,G E1/T1,Nx64K

ISU

Ma tran ker noi cheo 6x6 VC-4

Bo giao tiep

STM-1

ISU

Ethernet, E1/T1,Nx64K Ethernet, E1/T1,Nx64K

EX

EX

Nguon nh thi ong bo

He thong ieu khien thong tin

X ly mao au

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n v quan ly OptiX

Giao tiep d lieu phu

Kenh nghiep vu

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Thit b OptiX Metro 500 c th lm thit b u cui TM (terminal multiplexer), thit b ghp xen /rt ADM (add/drop multiplexer) hay hn hp MADM (multi ADM) bao gm TM v ADM. Chc nng u cui TM bao gm: cc b giao tip lung chnh, giao tip lung nhnh, b kt ni cho, b nh thi ng b, b iu khin h thng v thng tin (SCC), b x l mo u v b giao tip ph.

-

Chc nng a h thng:

Thit b OptiX Metro 500 c th hot ng ch a h thng, kt ni cho cc thit b gia cc h thng. Chc nng a h thng bao gm: cc b giao tip lung chnh, giao tip lung nhnh, b kt ni cho, b nh thi ng b, b iu khin h thng v thng tin (SCC), b x l mo u v b giao tip ph.E1/T1 Nx64K thoaidata D.vu Ethernet STM-1 Giao tiep luong nhanh Giao tiep luong chnh Giao tiep luong nhanh Giao tiep luong chnh E1/T1 Nx64K thoai-data D.vu Ethernet

He tho ng 1

Ma tran ket noi cheo

He tho ng 2

STM-1

Nguon nh thi ong bo Giao tiep nh thi

He thong ieu khien thong tin Giao tiep bao dng OAM&P

X ly mao au

Giao tiep mao au

Hnh 3.2. Cau truc a nang cua thiet b OptiX

Metro 500 Cc Boadr mch OPTIX Metro 500 + Cc giao din SDH, PDH.. + Cc giao din cc dch v bng rng. + Cc giao din truy cp d liu

Cc board mch ca Optix Metro 500 c th chia thnh:

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+ n v iu khin SCC, n v ngun. + n v nh thi ng b + Cc n v chc nng khc

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Giao din n v giao din v x l SDH

Board mch SL1S SL1D PL1D

Chc nng Giao din quang thu, pht 1STM-1 Giao din quang thu, pht 2STM-1 Giao din in thu, pht 16E1 Giao din in thu, pht 8E1 Giao din in thu pht 16E1/T1 ng b, qun l thit b v iu khin giao tip ng b mng u ni cho 6x6VC-4 Giao din in thu, pht 16E1 Card giao tip in 2 cng Ethernet 10/100M Board truy cp cc dch v Nx 64 kb /s n v giao din ngun n v gim st nhit n v cung cp Tone

Giao din PDH

ISU

PL1S PM1D

n v s l V giao tipV Giao din PDH n v giao din bng rng n v truy cp d liu n v ngun n v gim st nhit n v cung cp Tone UPM EMU TDA EXTEND SLOT

SCC STG XC SP2D ET1D

Nx64

- Cc Thng s k thut

Tc Mbps Lai giao tip Bc sng (nm) Cng sut pht (dBm) d(km) Rx nhy dBm S-1.1 1261-1360 -15 n 8 30 -28

155.520 L-1.1 1280-1335 -5 n 0 50 -34 L-1.2 1480-1580 -5 n 0 90 -34

Tx

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CHNG V: KT LUN Hn 15 nm nm i mi, c s h tng vin thng v cng ngh thng tin ca Vit Nam c nhng bc pht trin t ph gp phn rt quan trng vo vic thc y s pht trin ca t nc. T mt mng li vin thng vi cng ngh lc hu, vin thng Vit Nam tin hnh mt cuc cch mng khoa hc v cng ngh, i vo hin i, bng chin lc tng tc chuyn ton b mng li c sang mng li mi linh hot vi k thut tin tin, p ng mi yu cu v vin thng cho t nc. Trong s pht trin ca mng vin thng Vit Nam, thng tin quang c nhng ng gp u tin v rt quang trng v c quy m pht trin cng nh nng cao cht lng ton mng. H thng thng tin bng cp si quang l h thng truyn dn vi k thut v cng ngh tin tin, cho php to ra cc tuyn truyn dn di v dung lng rt ln, n cn tim tang kh nng truyn ti lu lng bn rng v cung cp cng mt lc nhiu dch v linh hot, cht lng cao. V vy, thng tin quang s p ng nhu cu pht trin mng truyn dn trong thi gian ti y. Cc h thng thng tin quang ang khai thc hin nay mi tn dng c mt phn nh kh nng ca n. Cng ngh thng tinh si quang vn ang tip tc pht trin rt mnh trnh cao v v th cn tip tc tm hiu, khai thc v c gii php p dng hiu qu hn trn mng li. ti h thng thng tin quang thc s em li cho em nhiu hiu bit v thng tin si quang. Khi tm hiu v h thng thng tin si quang chng 1 trnh by mt cch khi qut v h thng v gip cho em c ci nhn v h thng thng tin si quang mt cch tng qut. Cc chng tip theo tp trung vo trnh by mt cch then cht cc vn nh cc c im, cu to chc nng ca h thng, v tng b phn cu thnh nn h thng. Trong chng I nh gi mt cch tng quang v h thng thng tin si quang. Lch s hnh thnh v pht trin pht trin ca h thng cng nh cc cu trc chung ca h thng thng tin quang v cc u im ca h thng ca thng tin si quang. Trong chng II tm hiu chi tit hn v cc phn t h thng gm: Pha

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pht quang l ngun quang, mi trng truyn dn l si quang v pha thu quang l cc b tch sng quang. Trong chng ny gip em tm hiu k hn v cc thnh phn cu to, nguyn l hot ng cng nh cc nhn t nh hng n h thng thng tin quang Trong chng III gip em tm hiu c th v mt h thng thng tin ang c s dng rng ri hin nay l h thng thng tin quang iu bin trc tip IM-DD. y em c dip bit thm v m hnh ca h thng IM-DD trong cp n cc thit b pht, mi trng truyn dn v thit b thu quang. i vi h thng IM-DD vi c tnh n gin c ng dng rng ri v cho nhng li ch to ln trong thi k mi pht trin thng tin quang. Vi nhng u im k trn vic s dng si quang lm phng tin truyn dn l cn thit.Th nhng khi s dng si quang trong thc t khng phi l iu n gin c ch nh sng lan truyn trong si quang cng nh tn hao l nhng yu t cn phi tnh n trc tin khi chn si quang lm phng tin truyn dn tn hiu. Trong nhng nm gn y, cc nc pht trin trn th gii nh M, Nht Trung Quc, c. ang ngin cu a ra cng ngh mi : WDM l cng ngh truyn dn tc cao vi trm Gbit n Tbit. Dng cng ngh WDM m rng dung lng l cng ngh truyn dn siu ln nht hin nay. N khng nhng m rng dung lng, tit kim c s lng ln im b lp, b ti sinh, gim gi thnh ca h thng. N l nn mng cho s pht trin lu di trong tng lai.

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CHƯƠNG IV Thot Not

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