29094960-fttx

7/30/2019 29094960-FTTx

1/26

FTTxvmtsdchvtrnFTTxMCLC

Trang

LINIUInternetbngrngvicngnghADSL(sdngcpng) tonn

bctinbngntrongvictruyntidliu.Vikhnngktni,truyndliugphngchcnhngtrmlnmodemquays,ADSLbinInternettrnngngivphbinvibtkqucgiano.

Tuynhin,cngnghADSLangngtrcnguycphinhngvtrthngtrbylunaychomtloicngngh truyndnmihn,lcngngh truyndncpquang, thngquakin trcmngsdngcpquangkt

ni

vin

thng

c

tn

FTTx

(Fiber

To

The

x).

MngFTTx (Fiber-to-the-x)hinangcxem lsngmtvai tr

quantrngtrong2-3nmtidotimnngcungcpbngthngchokhchhnglnhnsovicpng,pngnhucutruynthoi,dliuvvideotrnnnIP.CccngnghthngcsdngtodngccmngFTTx,baogmcccmngquang thng,ccngdy thubaos(DSL),vcccngnghnnvideo.

Nhm 1 - Lp D06VT2 1

7/30/2019 29094960-FTTx

2/26

FTTxvmtsdchvtrnFTTx

THUTNGVITTT

ADSL AsymmetricDigitalSubscriberLineAON ActiveOpticalNetworkAPON ATMPassiveOpticalNetworkBPON BroadbandPONC0 CentralOfficeCPE CustomerPremisesEquipmentDSLAM DigitalSubscriberLineAccessMultiplexerFTTB FiberToTheBuildingFTTC FiberToTheCurbFTTH FiberToTheHomeFTTN FiberToTheNodeGPON GigabitPONOLT OpticalLineTerminalONT OpticalNetworkTerminalONU OpticalNetworkUnitPON PassiveOpticalNetworkSTB SetTopBoxTDM

Time-Division

Multiplexing

WDM WavelengthDivisionMultiplexing

Nhm 1 - Lp D06VT2 2
http://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATMhttp://tudiencongnghe.com/Special:Search/ATM

7/30/2019 29094960-FTTx

3/26

FTTxvmtsdchvtrnFTTx

I.TNGQUANVFTTx1. Giithiuchung

FTTx(Fibertothex)lmtthutngchungchobtkkintrcmngbngrngsdngcpquangthaythttchaymtphncpkimloithngthngdngtrongmchvngchngcuicamngvinthng.Thutngchungnybtngunnhmtstngquthamtvimhnhmngtrinkhaisiquang(FTTN,FTTC,FTTB,FTTH,FTTP),ttcbtubngFTTnhngkt thcbiccktkhcnhau,cthaythbngxmangtnhchttngqutha.

Ngnhcngnghipvinthngphnbitmtvimhnhringbit,rrng.Trongcsdngrngrinhthinnayl:

FiberToTheHome(FTTH):siquangcdntiranhgiikhnggiansng,nhmthpcpquangcttrntngbnngoicamtnginh. FiberToTheBuilding(FTTB):siquangcdntichncamttanhcaotng,tthng

Nhm 1 - Lp D06VT2 3

7/30/2019 29094960-FTTx

4/26

FTTxvmtsdchvtrnFTTxquaphngtinchuyni(quang-in)unititngngisdngringbit. FiberToTheCurb(FTTC):siquangcdntitcpttrnlngcchkhuvckhchhnggnhn300m,tsdngcpngunitingidng. FiberToTheNode(FTTN):siquangcdntinode,ncngtngtnhFTTC,nhngkhongcch tnode tikhuvckhchhng thxahn,cth tivikilomet.

Hnh1:CcmhnhmngFTTx

NhucusdnghtngcpquangtihgianhFTTH(FibertotheHome)xuthintnhngnm1980khimcccngtyinthoithylichmanglitrongviccungcpccdchvbngrngticcthubao.Nhngtinbnhanhchngtronglnhvcthuphtvcpsiquangmramt timnng ln trongvicpht trinh tngFTTH.FTTHcxemnhmtgiiphphonhotrongvicthaythmngcpnghintinhmcungcpccdchvtripleplay(baogmthoi,hnhnh,truycpdliutccao)vccngdngihinhiubngthng.

Nhm 1 - Lp D06VT2 4

7/30/2019 29094960-FTTx

5/26

FTTxvmtsdchvtrnFTTxHinnay,VitNamcmtsnhcungcpdchvFTTHsau:

Thng8/2006FPTTelecomchnhthctrthnhnvutincungcploihnhdchvtintinny.

Ngy1/5/2009,VNPTcungcpdchvInternetFTTHtrncpquangvitccaon20Mbps/20Mbps.

Ngy15/05/2009,ViettelchnhthctrinkhaicungcpdchvtruynhpInternetFTTH(FiberToTheHome)CpquangsiutcnhmphcvkhchhngdoanhnghipmdchvtruycpInternethinti(ADSLvLeasedLine)chapngcvtcvchiphsdng.

Hnh2:MngFTTxkhitrinkhai

2. SosnhmngADSLvFTTx2.1.CpquangvcpngTrnthct,khcphcnhcimtrongtruyndnthngtincacp

ng,tlungitachoraicpquangcngvinhngtnhnnguvit

hn.

Khng

ging

nh

cp

ng

truyn

tn

hiu

bng

in,

cp

quang

dng

nhsngtruyntnhiui.Chnhvskhcbitmcpquangtb

Nhm 1 - Lp D06VT2 5

7/30/2019 29094960-FTTx

6/26

FTTxvmtsdchvtrnFTTxnhiu,tccaovckhnngtruynxahn.Tuyvyphingiaionhinnaythcpquangmicphttrinbngn,nhtltronglnhvcktnilinlca,ktnixuynqucgia.VvicsdngcngnghtruyndnhininycngangbtuthaythdnmngcpngADSLphcvtrctipnngisdng.

Cpquangdi,mngvithnhphncathytinhtrongsutbngngknhcamtsi tc.Chngcspxptrongbcgi lcpquangvc sdng truyn tnhiu trongkhongcch rtxa.Cpquangccutogmdydntrungtmlsithytinhhocplasticctinhchnhmchophptruynitiacctnhiunhsng.Siquangctrngmtlpltnhmphnchiuttcctnhiu.

Cpquanggmccphnsau: Core:Trungtmphnchiucasiquangninhsngi Cladding :Vtchtquangbnngoibaobc limphnxnh

sngtrlivoli. Buffercoating:Lpphdobnngoibovsikhngbhng

vmt Jacket:Hngtrmhayhngngnsiquangcttrongbgi

lcpquang.Nhngbnycbovbilpphbnngoicacpcgiljacket.

Khiphttnhiuthmtitphtsng(LED)hoclaserstruyndliuxungnhsngvocpquang.Cnkhinhnthssdngcmngquangchuynxungnhsngngcthnhdliu.Sovicpng,cpquangchtruynsngnhsng (khng truyn tnhiuin)nnnhanh,khngbnhiuvbnghetrm(tnhiunhsngtsiquangkhngbnhiuvinhngsikhctrongcngcp,iunylmchochtlngtnhiutthn).suydnthphncc loicpng (tnhiubmt trongcpquang thn trongcpng)nncthticctnhiuixahngngnkm.Dunglngticacpquangcaohn,vsiquangmnghncpng,nhiusiquangcthcbvovingknhchohncpng.iunychophpnhiuknhiquamtsicp.

Cpquangcngsdnginngunthn,bivtnhiutrongcpquanggim t,myphtc thsdngngunthphn thayvmyphtviin

th

cao

c

dng

trong

cp

ng.

Nhm 1 - Lp D06VT2 6

7/30/2019 29094960-FTTx

7/26

Bng1:SosnhADSLvFTTxdatrnmtstiuch

FTTxvmtsdchvtrnFTTxCntnhiusthcpquangrtltngthchhptithngtindng

smcbithudngtrongmngmytnh.Cpquangcngkhngchy,vkhngcinxuynquacpquang,dokhngcnguychahnxyra.Tuyvy,cpquangvccthitbikm lirtttinsoviccloicpng.

2.2.MtstiuchvchtlngdchvgiaADSLvFTTxHinnay,cngnghFTTH(Fiber-To-The-Homelmngvinthng

bngthngrngbngcpquangcnintnnhcungcpccdchvtccaonhinthoi,InternettccaovTV)angctrinkhaikhmnhmtrnthgii.KhidngcngnghFTTH,ngtruyndnhontonbngcpquangti tnphngmycangisdng.Chtlng truyndntnhiubnbnnhkhngbsuyhaotnhiubinhiuint,thitithaychiudicpnhiviADSL.bomtrtcao.ViADSL,khnngbomtthphnvcthbnhcptnhiutrnngdy,cnviFTTHthhunhkhngthbnhcptnhiutrnngdy.VicngnghFTTH,nhcungcpdchvcthcungcptcdownloadlnn10Gigabit/giy,nhanhgp200lnsoviADSL2+(hinchcthpng20Megabit/giy).TctruyndnviADSLlkhngcnbng,ctctilnlunnhhntctixung(Btixng,Download>Upload)v tia20Mbps.CnFTTHchophpcnbng,tctilnvtixungnhnhau(ixng,Download=Upload)vchophptial10Gbps,cthphcvcngmtlcchohngtrmmytnh.FTTHcbithiuquviccdchv:HostingServerring,VPN(mngringo),Truyndliu,GameOnline,IPTV(truynhnhtngtc),VoD(xemphimtheoyucu),VideoConferrence(hinghtruynhnh),IPCameraviuthbngthngtruyntidliucao,cthnngcplnbngthnglnti1Gbps,Antondliu,nnhcao,khngbnhhngbinhiuin,ttrng...

Nhm 1 - Lp D06VT2 7

Yutsosnh ADSL FTTxMitrngtruyntnhiu

Cpng Cpquang

nnh Dbsuyhaodotnhiuint,thitit,chiudi

cp

Khngbnhhng

7/30/2019 29094960-FTTx

8/26

FTTxvmtsdchvtrnFTTx

II.KTHUTTRINKHAIMNGFTTxCchngchnhtrinkhaiFTTx(cthviFTTH):

HomeRun(Point-to-Point). AON-Activeopticalnetwork:Mngquangchnghay

mngquangtchcc. PON-Passiveopticalnetwork:Mngquangthng.

Nhm 1 - Lp D06VT2 8

Bomt bomtthp,dbnhcptnhiungdy

bomtcao,khngthnhcptnhiutrnngtruyn

Tc truyn dn(Uploadvdownload) Btixng:Download>Upload

Tctial20MbpsChophpcnbng:Upload=downloadTcchophpl10Gbps

Chiudicp Tial2,5kmtcsnnh

Tia10km

Khnngpngccdch v bng rng:Hostingserverring,VPN,hinghtruynhnh

Khngphhpvtcthp

Rtphhpvtcrtcaovcthtybintc.

7/30/2019 29094960-FTTx

9/26

FTTxvmtsdchvtrnFTTx

Hnh3:CchngtrinkhaimngFTTx1.Homerun

Phngphpnysdngktniimtiim(point-to-point),nghaldyquangscatrctiptCO(CentralOffice)ntnnhcangisdng.y lphngphpnginnhtnhnghinnay tcsdngphbinbihiuquthngmithp,tnkm.

Hnh4:KiutrinkhaiHomerun

2.Mngquangchng(AON)

Nhm 1 - Lp D06VT2 9

7/30/2019 29094960-FTTx

10/26

FTTxvmtsdchvtrnFTTx

Hnh5:Mngquangchng

phnphitnhiu,mchquangchngsdngccthitbsdnginphn tchd liunhmtchuynmch, routerhocmultiplexer.Dliu tphanhcungcpcakhchhngnoschcchuynnkhchhng.D liu tphakhchhngs trnhxungtkhi truyn trnngvtlchungbngvicsdngccbmcaccthitbchng.

Tnm2007,huhtcccchthngmngquangchngcgilEthernetchng.Ethernetchngsdngccchuynmchethernetquangphnphitnhiu,dosktnicccnhkhchhngvinhcungcpthnhmththngmngEthernetkhnglgingnhmtmngmytnhethernet thng thngngoi trmcchcachng lktnicccnhvcc tanhvinhcungcpdchv.Mitchuynmchc thqunl ti1000khchhng,thngthngl400-500khchhng.Ccthitbchuynmchnythchinchuynmchvnhtuyndavolp2vlp3.

Nhm 1 - Lp D06VT2 10

7/30/2019 29094960-FTTx

11/26

FTTxvmtsdchvtrnFTTxActiveEthernet:Thutngnyuchiunhthchinmtktniim

imgianguisdngvEthernetSwitchcanhcungcpdchv,ccEthernetSwitchescthucttinhcungcpdchvhocikhiuctnhmttcungcpmnggnphakhchhng.Thitbchuyni(MediaConverter)ctphakhchhngcnhimvchuynquangin(quangnmodethnhCAT5cthsdng100BaseThoc1000Base-T(GigabitEthernet).

Mtnhcimrtlncamngquangchngchnhlthitbchuynmch.Vicngnghhinti,thitbchuynmchbtbucphichuyntnhiuquangthnhtnhiuinphntchthngtinritiptcchuynngc li truyni.iunyslmgimtctruyndntiacthtronghthngFTTX.Ngoiradoylnhngchuynmchctccaonncc thitbnyrtt,khngphhpvivic trinkhaii trchomngtruycp.

3.Mngquangbng(PON)3.1.PONlg

Hnh6:MngquangthngPONlkiumngimaim(P2M).Mikhchhngcktni

timngquang thngquamtbchiaquang thng,vvykhngcccNhm 1 - Lp D06VT2 11

7/30/2019 29094960-FTTx

12/26

FTTxvmtsdchvtrnFTTxthitbinchngtrongmngphnchiavbngthngcchiastnhnh (feeder)nngidng (drop).Tnhiudownloadcbroadcast ticchgianh,tnhiunycmhatrnhvicxemtrm.Tnhiuuploadckthpbngvicsdnggiaothcatruynhpphnchiatheothigian(TDMA).OLTsiukhinccONUsdngcckhethigianchovictruyndliunguplink.

Hnh7:Cutrcmngquangthng

3.2.ThnhphnmngPONThitbngtruynquang(OLT:OpticalLineTerminal):OLTcung

cpgiaotipgiahthngmngtruycpquangthngEPONvmngquangng trccaccnhcungcpdchv thoi,d liuvvideo.OLTcngktninmnglicanhcungcpdchvthngquahthngqunlEMS(ElementManagementSystem).

Thitbktcuimngquang (ONU:OpticalNetworkUnit):ONUcungcpgiaotipgiamngthoi,videovdliungidngvimngPON.ChcnngcbncaONUlnhndliudngquangvchuynsangdngphhpvingidngnhEthernet,POST,T1...

Hthngqunl(EMS:ElementManagementSystem):EMSqunlccphntkhcnhaucamngPONvcungcpgiaodinnmnglicacc


7/30/2019 29094960-FTTx

13/26

FTTxvmtsdchvtrnFTTxnhcungcpdchv.EMScchcnngqunlvcuhnh,ctnhvbomt.

TrongcngnghPON, thitbOLT(OpticalLineTerminal, thitbktcuiknhquang)ctphanhcungcpdchv,cnccthitbONT(OpticalNetworkTerminal,thitbktcuimngquang)ctphanguisdng.ThitbOLTcungcpnhiuknhquang,miknhquanguctruyntrnmt tuyncpquangtrncblc(splitter).NhimvcablclthuvnhncctnhiuquangucnhnvphtbiOLT.CcidyquangtruyntOLTstridivktnitimiONT.Ccbcsngtruyn1490nanometers (bucchn la,1550nm)ucdngchobng thngchiuxungtOLT,trongccbcsng1310nmsuctruyntheohunglnbimithitbONT.Hthngcungcpach,cungcpbngthngmtcchtngtngcngnhvicmhacsdung truy trvphntchlulnggiaOLTvONT.

3.4.ctnhctnhnibtcacngnghPONcthchiungngnbihai

sau: KhnngtndungphungphpWDM,ghpknhphnchiatheo

ditnvcungcpbngthngtnggimthiuslngcpquangcnthitktnigiaOLTvblc.

Liimloibhon tonscnthitcangunngoi.uimcaPON lnsdngcc thitbsplitterkhngcncpngun,cgithnhrvcthtbtku,khngphthucvcciukinmitrng,khngcnphicungcpnnglngchoccthitbgiaphngmytrungtmvphangidng.Ngoi ra,uimnycngipccnhkhaithcgimcchiphbodng,vnhnh.KintrcPONchophpgimchiphcpsiquangvgimchiphchothitbtiCOdonchophpnhiungidng(thngl32)chiaschungmtsiquang.

3.5.CcchunmngquangbngPONITU-TG.983

APON(ATMPassiveOpticalNetwork):ylchunmngPONutin.Nchyucsdngchoccngdng

kinh

doanh

v

da

trn

ATM.


7/30/2019 29094960-FTTx

14/26

FTTxvmtsdchvtrnFTTx BPON(BroadbandPON):lmtchundatrnAPON.NhtrthmcngnghWDM,bngthngginhchonguplinklngvcaohn.NcngcungcpmtgiaodinqunlchunOMCIgiaOLTvONU/ONTchophpnhiunhcungcpdchvcnghotng.

ITU-TG.984 GPON(GigabitPON):lsnngcpcachunBPON.Nhtr

tccaohn,bomtctngcngvsadngtrongviclachngiaothclp2:ATM,GEM,Ethernet.

IEEE802.3ah EPON(EthernetPON)lmtchuncaIEEE/EFMchovics

dngEthernettrongvictruyndliu.3.5.WDMPON

Hnh9:CutrcTDMA-PONvWDM-PON

hngxung (tOLTnONU),mngPON lmngim-aim.OLTchimtonbbngthnghngxung.Tronghngln,mngPONlmngaim-im:nhiuONUtruynttcdliucannmtOLT.ctnhhngcaccbtchghpthnglvictruynthngcamtONU

s

khng

c

nhn

bit

bi

cc

ONU

khc.

Tuy

nhin

cc

lung

d

liu

tccONUkhcnhauc truyncngmtlccngcthbxungt.Vvytronghngln,PONssdngmtvicchringbittrongknhtrnhxungtdliuvchiascngbngtinguynvdunglngtrungk.

MtphngphpchiasknhhnglncaONUlsdngghpknhphnchia theobcsngWDM,viphngphpny thmiONUshotngmtbc sngkhcnhau.GiiphpWDMyucumtb thuiukhinchoclmtmngbthuOLTnhnccknhkhcnhau.ThmchnhiuvnkhkhnchoccnhkhaithcmnglkimktngbcsngcaONU:thayvchcmtloiONU,thcnhiuloiONUdaNhm 1 - Lp D06VT2 14

7/30/2019 29094960-FTTx

15/26

FTTxvmtsdchvtrnFTTxtrnccbcsngLasercan.MiONUssdngmtlaserhpvrngphiukhincchonnrtttin.Mckhc,numtbcsngbsailchsgyranhiuchoccONUkhctrongmngPON.VicsdngLaseriukhinccthkhcphccvnnynhngqutchocngnghhinti.VinhngkhkhnnhvythWDMkhngphilgiiphpttchomitrnghinnay.

MtsgiiphpkhcdatrnWDMcngcxutnhnggickhcao.Dovy,TDMPONrai.TrongTDMPON,victruynngthitviONUsgyraxungtkhinbkthp.ngnchnxungtdliu,miONUphitruyntrongcas(khethigian)truyncan.MtthunlilncaTDMPONlttcccONUcthhotngcngmtbcsng,OLTcngchcnmtbthun.BthuphtONUhotngtcngtruyn,thmchbngthngcthdngcaONUthphn.Tuynhin,ctnhnycngchophpTDMPONthiuquthayibngthngcdngchotngONUbngcchthayikchckhethigiancnnhhocthmchsdngghpknhthngktndnghtbngthngcdngcamngPON.

Trongmngtruycpthubao,huhtcclunglulnglnvxungkhngphilPeertoPeer(usertouser).Vvyiunydngnhlhpl tchknhlnvxung.Mtphngphp tchknhngincthdatrnghpknhphnchiakhnggian(SDM)mntchPONccungcptheohngtruyn lnxung. titkimchosiquangvgimchiphsachavboqung,mtsiquangcthcsdngchotruyntheohaihng.Trongtrnghpny,haibcsngcdngl:hngln1=1310nm,hngxung2=1550nm.DunglngknhmibcsngcthphnphilinhnggiaccONU.

GhpknhphnchiatheothigianlphngphpcutinhinnaychovicchiasknhquangtrongmngtruycpkhimnchophpmtbcsngnhnglnvbthuphpnOLTlmchogiiphpnycuthhnvchiphut.

4.Sosnhgia2kthutAONvPON:


7/30/2019 29094960-FTTx

16/26

FTTxvmtsdchvtrnFTTx

Hnh10:SosnhAONvPON


7/30/2019 29094960-FTTx

17/26

FTTxvmtsdchvtrnFTTx

Hnh11:GPONvActiveEthernet

Ccyutcemrasosnh: Tngdunglng,bngthngmtthubaocthtnhng Ccdchvhaicngnghcungcpchongidngucui.

Nhcpphatrn,GPONdnghaibucsngkhcnhau,chiuxungbcsng1490nm,vchiuln1310nm(coiOLTlmmc).Vbucsng1500nmlbucsngchnlasdngchoccthngtinqungbvtnhiuvideos.Tithiimhinti,tcchiuxungcaGPONkhong2.5Gbps,vchiu ln l1.25Gbps .Nu1OLTphcvduynhtmt thubaoththubaocthuctnhongtonbbngthngnhtrn,tuynhinthngthngtrongccmngtrinkhaitimtsnuctrnthgii,ccks thng thitk tcchomt thubaosdngPONvokhong100Mbpschochiuxungv40Mbpschochiuln.VitctruynhpnhvythquthathichoccngdngcaocpnhHDTV(khong10Mbps,chiulnchiuxung,chiulnchopeer-to-peerHDTV).ActiveEthernetthngthngcungcptcchiulnvchiuxung100Mbpstimithubao.ActiveEthernetcngcthcungcptclnhnvyvithitbucuiGbEthernet, tuynhincc thitbhtrGbEthernetSwitchbhnchvgithitb(thngthntnhtgp6lnsoviactiveEthernetthngthng).

TrongmtvithnghimgnyuctinhnhbclkhnnghnchcaActiveEthernetl:khidownload1bphimHDTV5.8GB,khong47gigabitsthngtincntruynti,GPONmt2phtcnActiveEthernetmt8phttitctruyn100Mbps.MttrongnhngiungthuytphcccOperatortrinkhaiGPONchnhlkhnngBroadcastTV,vIPTVnh


7/30/2019 29094960-FTTx

18/26

FTTxvmtsdchvtrnFTTxvobucsng1550nm.(qungbtvsvanalog),trongkhiActiveEthernetchh tr IPTV.Skhcbit lnnhtcaGPONvActiveEthernetnmkhacnhutvhiuqukinht:

-chocngtuckhongcchtithubaol20Km,InactiveEthernetcn thit trn4Watts/port; trongkhiGPONcnkhng ti1Watt.Nimtcchchnphung Inactivecnngungp4GPONvcnh thngiuhagp4GPON.

-Ngoiravdin tchvs lung thitbGPON tra tnkmhnActiveEthernetnhiu.

Bng2:SosnhmtstiuchcthgiaGPONvActiveEthernet

CcnhcimcaGPON: ThiutnhhitIP(IPconvergence) CmtktniduynhtgiaOLTvspitter,nuktninymt

tonbONTkhngccungcpdchv. ActiveEthernetcthtrinkhaicuhnhmngRingstonn

ngdphng.TrongkhiGPONthkhng.III.CCDCHVTRNMNGFTTx

CcnhcungcpdchvangsdngmngFTTx(Fiber-to-the-x)nhmttrongnhngcngchuhiucachinlccnhtrnhcungcpb3dchv-TriplePlay,baogm: thoi,d liuvvideo trnnnIP.CccngnghthngcsdngtodngccmngFTTx,baogmcccmngquang

th

ng,

cc

ng

dy

thu

bao

s

(DSL),

v

cc

cng

ngh

nn

video

utipcnnmcgiccnhtranh.


7/30/2019 29094960-FTTx

19/26

FTTxvmtsdchvtrnFTTxDoyucu trinkhaimngFTTxkhngqukhkhn,ccnhcung

cpdchvphibomdchvTriplePlaymhcungcphotnghonho.NumngcshtngFTTxctrinkhaimchtlnglikhngcaothccnhcungcpdchvsphiimtvinguycvnhvinmticckhchhngtrungthnhvotayccithcnhtranh,nhngngicungcpccgidchvtngtnhngvichtlngcaohn.

1.Xydngcckhibbadchv(TriplePlay)CcdchvTriplePlayc thccungcpnhnhiucngngh truy

cpkhcnhautrncngmtmnglFTTx.FTTx thcralmttphpcckintrcmngmicthitkmangccdchvbngrngticckhchhngcuicng.SiquangchockhngcsdngtrongttcccktnitnhcungcpnkhchhngcngnhtrongkintrcFTTP.CngnghxDSL,vdADSL2+,cthcsdngnhngkilometcuinhmktnitntquangtithitbcuiphakhchhng(CPE).

Thc t,huhtccmngFTTx, siquang,cpng,cpng trc,giaotipkhngdyhocmtviskthpcanhngphngtinnysmangcctnhiutruynticcngdngTriplePlayticcthitbmngtchhp,ccmythuhnh,vccbchuynitrongccngdngVoIPvthoithngthng.

Khi trinkhaiccdchvTriplePlay theokin trcFTTx thvickimtrattcccphngtintruyndnvtlcsdng,cbitlphnmngtruycpbngcpng,trnnquantrnghnbaogiht.

Vickim tranhiu lpcamngcngviccngdngcungcpphic tinhnh trong tonbvngicamng - tgiaion lpt,cungcpdchv,vbomdchv.kimtralpvtlcngnhccngdngtrongtonbchuksngcamng,rtnhiuphngphpovloithitbkhc

nhau

cn

c

s

dng

rt

nhiu

im

khc

nhau

trn

mng.


7/30/2019 29094960-FTTx

20/26

FTTxvmtsdchvtrnFTTx

Hnh12.CckintrcdchvmngFTTx

Tronggiaionlptmng,cntinhnhxcnhc tnhsiquangvccthngtinvsuyhaochn(insertionloss)vsuyhaophnxngc(opticalreturnloss).Tronggiaioncungcpdchv,cntinhnhocngsutquang,hiusuttruyndliuxDSL,nhgichtlngthoi,videovd liu.Khimngc trinkhaivcungcpccdchv,vickimtrambodchvtrthnhmtyucubtbuc.Cckthutvintrntuynphickhnngcchlycclihiuqu,thchinnhgidchvucui-ucui,vhtrqutrnhphntchscmtcchhiuqu.

2.KimtraccdchvTriplePlayTngtnhvictrinkhailpvtl,victrinkhaiccdchvTriple

Playcthchintheobagiaionkhcnhau:lptccthnhphnmngvnhgisbcht lngmng,cungcpdchv tikhchhng,vbotr,bomdchv.MigiaiontrongvngicamnglimangnnhngthchthckhcnhauchomidchvTriplePlay.

2.1.DchvIPVideoTrckhicungcpdchvIPvideo,nhcungcpdchvphixcnh

sphhpcamngtruycpcakhchhngvidchvIPvideo.CccchqunlLpdchvVideo(VideoClassofService),vdnhvicphnchia


7/30/2019 29094960-FTTx

21/26

FTTxvmtsdchvtrnFTTxnhnVLAN(VLAN tagsegregation), lpkhochtilulng,vmbophicxcnh.ThitbDSLAMphicnngcphtrchcnngthuphtgi(InternetGroupManagementProtocol-IGMP)vchcnngIPmulticast.CuhnhphamngtruycpcngcncthitlpcthhtrccbngthngcyucuividchvIPvideo.cbit,nphithomncyucutruyn3knhvideongthi.

Saukhi ttcnhngvn trncgiiquyt, tin trnhcungcpccthnhphncnthitcamngvvicktnicthbtu.CcthnhphnmngcnlptvkimtrabaogmcccngDSLAM,Gatewayphakhchhng,ccdymngitrongnhkhchhngvccbgiimtnhiutruynhnhs(STB-SetTopBox).Ngoira,vicnhgilichtlngcalinktmngtruycpcngcntinhnh.

KhitomivcungcpdchvIPvideo,cnphinhgiv thuthpthngtinvchtlngdchvvcclixyra.Vickhcphcscdatrnnhng tnhhunggi lpphic thchin trckhihon ttviccitdchv.Trnghpltngnhtllu licccbnbocoocakhunytrongqutrnhtrinkhaidchvvsaunydngthamchiuchocchotngbotrvbomdchv.Sdngdliuclulinyscgpphncithinngkthigiansacha,khcphcsc(Mean-time-to-repairMTTR)mnh,khchhngcsdngdchvchtlngnnh.

cithinqutrnhlptmngvdchv,ccthitbokimcthgipkthutvintrntuynkimtrabathamstrckhicungcpdchvIPvideo,baogm:hiusutngxDSL,cungcpdchvvideo,vchtlngdchvvideo(QoS).ThitbphickhnngmphngSTBcakhchhng,lycclungdliuchngtrnhvideo,vxcnhtnhhpchuncaccgitrQoScthitlpbinhcungcpdchvchomithams.

CcktquokimQoSVideohinthtrnthitbokimcakthutvinschobit ttccc thamsquan trngnhhng ti lungvideo.Vd,nujitterthamchiunghchngtrnh(ProgramClockReference-PCR)cao,bgiimkhngthgiimngtivideo.VntriviIGMPnhhngtithigiancnchuynigiaccknhvideoqungbvdo,lmtyutquantrnglinquanncmnhncakhchhngvchtlngdchvmhnhnc(customerexperience).Sgi tinbmttronglungtruyndnvideo,cobngbchthlilintip,lthamsquantrngnhttrongs3thamscnuray.Thitbcngnnckh


7/30/2019 29094960-FTTx

22/26

FTTxvmtsdchvtrnFTTxnngthitlpccgiihnt/Khngt(Pass/Fail)chomithamsny,lmtngtnhchcchntngcchotngvnhnhthctvgipcithinqutrnhmbodchvIPvideo.

khcphscca IPvideo,cckthutvin trntuync thsdngthitbokimcahphthintrnghpliIP,vdnhliimnhvideohoclinghnh.Hailitrnxyraldomtgidliu,jittergiqu ln,hocchai.Nukhngphthinra lino lpvt lca linkttruycpckim tra thc thvicmtgixyrang ln(upstream)caDSLAM.JitterPCRlinquantimtknhvideo,xcnhvnxyraheadend,vivicchnthmccLocalAd,hocvicchotngchuynimtnhiungun.Vicmtgitingyranhiunhhngkhcnhau.Vd,numtmtgimangkhungB trongmt tnhiuvideoMPEG-2schnhhngtimthochaikhungcalungvideo;numtmtgimangmtkhungIthsnhhngtittccckhungchotitnkhungItiptheo.Thngtht14n15khungsbnhhngtythucvo thitlpkchthcnhmhnh(GroupofPictureGOP).

VicgimstlintclungccgitinlcnthitmborngccngdngIPvideottichtlngmcckhchhngtrngitnhngnhcungcpdchvvideocnhtranh.Yucuvchtlngmhmongmunnhncphitthn,hoctnhtlbngvichtlngmhnhnctrc.

2.2.DchvthoiIPMun tovcungcpmtngdng thoiIPchodoanhnghip thphi

xcnhc tnhphhpcamngdoanhnghipkhilu lngnhycmvitrcadchvVoIP.Cctnhnnglpdchv(Class-of-Service-CoS)phi tntitrongccbnh tuyn(router),vmngphicsahoc lptliphhpvilulngthoicthmvo.Khochtilulngcthnhhng ti thitbmng,cbitlviccyucuvbngthnggiaodinWAN.Ccthathunvmcdchvmi(ServiceLevelAgreement-SLA)cncthitlp.

Tronggiaionlpt,cnlptvkimtracc thitbtruycptchhp(IntegratedAccessDeviceIAD),gatewaythoi,bnhtuynvinthoiIP.Vickim tra lpvt lcacc linktWANcngphic thchin.Theo,ccthnhphnmngvccktnicnthitcthccungcp,

v

ng

cp

mi

c

lp

t

cho

nhng

im

kt

cui

mi

(v

d

cc

inthoiIPhocccbchuyni(adapter).


7/30/2019 29094960-FTTx

23/26

FTTxvmtsdchvtrnFTTxKhidchvctrinkhai,kthutvintptrungvovickimtraQoS

VoIPvbtrccinthoiIPtrongthct.Hcngcnxllivccvn linquanncht lngdchv trckhihon ttviccungcpdchvchokhchhng.Tngtnhvingdng IPvideo,cnphithu thpccbocoktquogiaionnyv lu lisdngtrong tnglai.Khixyrascdchvthnhngbnboconysgiprtngnthigiangiiquytsc.

KhitrinkhaidchvthoiIP,cckthutvincnxcnhtnhktnitphakhchhng ticcgatewaybohiu,cungcpdchvvcht lngcucgi.Hcthnhgichtlngcucgibngcchthchincccucgikimtra trongnibmngIP(on-networktestcall)vcccucgisangmngPSTN(off-networktestcall).Ccthamscucgiquantrngcnkimtrabaogm:trgi,mtgivjitter.Tuynhin,MOS(MeanOpinionScore)s l thamsSLAquan trongnhtcsdngocht lngVoIPmtcchtngth.

Hnh13CutrcmtmngIPVideo

giaionmbodchv,rtnhiuvncthlmgimchtlngdchvVoIP,baogmvnlinquantikhuvcmngphakhchhnggyrabibmthoi,hiusutcabxl/DSP,thitbthu/phtmthanh,vhiusuthotngcabloibtingvngtrongmng.CcchuyngiaomnggiamnggivmngTDMthngcqunlbimtchuynmchgatewaythoilnhngimkimtraquantrngtrongttcccmng.

2.3. DchvdliuIPInternet


7/30/2019 29094960-FTTx

24/26

FTTxvmtsdchvtrnFTTxcungcpdchvdliuIPInternetticcthubaoFTTxthmi

khchhngcncthitlpmttikhonISP(InternetServiceProvideraccountISPaccount).Bncnh,khochv lu lng ticngcnsaiphhpvilungdliucthmvo.Ccmychtruycpdchvbngrngxa(BroadbandRemoteAccessServerBRAS)sbnhhng,dovichochnhbngthngvnhtuyn/iukhinphichonthin.Bncnhvic thit lpktni ticcISPvcungcpcc thnhphnmngcnthitcholungdliutngthmvxllpdchv(CoS),cccngDSLAMcthccuhnhlihtrtuyntrkp(dual-latencypath)trongmitrngngdnghnhpny.

ktthcqutrnhcit,cckthutvinphinhgihiusuthotnglpvtlDSL,mcktnitiISP,vthnglngcadchvdliu.VicnyctinhnhbngcchsdngmtcngckimtravikhnngtchhptrnhduytWeb(WebBrowser)vthnglngFTP.Sdngcctptin(file)kimtracdunglngcthlachncbingidngv tinhnhkim tracnglnvngxung,biothnglngFTPskimtrahiusutcalinktstviccmhnhtrinkhaitrongthcthn lchkim tranginmingxungca linkt.Thchinbikim traHTTPsdngmt trnhduytWebcngc li trongvicmborngktni/truycpISPcangidngcuivnchyhonho.

Mtkhidchvd liuIPInternetc trinkhai thchnhxccadchvcungcpcngcnphicnhgixemchpchunhaykhng.Vmt lnna,ccbnbocovbtkschayvngunnclulisdnglmtiliuthamkhotrongtnglai.

2.4. Gibadchv(TriplePlay)cnBokimcbadchv(TripleTesting)

Vickim traphicthchin rtnhiulp,baogm: lpvtl,lplinktdliu,lpmngvlpngdng.NuchnthunkimtralpvtlmngtruycpthkhngthphthinraccvnQoStimnmcthnhhngticcngdngTriplePlaydatrngi.

Hinnhin lvic truyngi tinchunhhngca lunggiucuitiucui.CcnhcungcpdchvtrinkhaiccmngFTTxcncchinlchonchnhvdchvvokimtincydatrnshiubitsuscvngdngccungcptheoslpt,cungcpvbodngchtlng

ca

cc

dch

v.


7/30/2019 29094960-FTTx

25/26

FTTxvmtsdchvtrnFTTxIV.XUHNGPHTTRIN

DkinFTTHsdn thay thADSL trong tng laignmtkhibngthngADSLkhngsccungcpngthiccdchvtrctuyntrongcngmtthiim.FTTHcungcp1IPtnhthchhpviccdoanhnghip,tchctrinkhaiddngccdchvtrctuynnhIPCamera,lutrmail,truyndliutccao...TheomtbocominhtcaHeavyReading,shgianhsdngktnibngrngFTTH trntonthgiistngtrnghngnmtrn30%chonnm2012vt89triuhkhi.HinNhtBn,TrungQucvMlccqucgiaiutronglnhvcbngthngrngsdngcngnghcpquangny.

Hnh14:Tlbngthngrngtrnthgiitheothngkqu4nm2007

CngnghFTTHckhong20triuktnitoncu,chtnhring3ncNhtBn,TrungQucvMcthmkhong6triuthubao,trongchucnhgilthtrngctimnngphttrinln.Theodon,vocuinm2012, ringchusc54 triuktniFTTH, tiptheolchuu/khuvcTrungng/chuPhivi16triu,rinBcMvNamMvi15triu.Hinnay,qutrnhchuynisangFTTHangcthchinnhiunc,gmanMch,Php,HngKng,NhtBn,HnQuc,Thyin,iLoanvM.

PHNCNGCNGVICNhm 1 - Lp D06VT2 25

7/30/2019 29094960-FTTx

26/26

FTTxvmtsdchvtrnFTTx

TILIUTHAMKHO http://en.wikipedia.org/wiki/Fiber_to_the_x ThomasMartin,FiberToTheHome,CiscoNetworkers,2007 PaulE.GreenJR,FiberToTheHomeThenewempowerment,

AJohnWiley&Sons,Inc.,Publication,2006 G.Kramer,EthernetPassiveOpticalNetworks,McGraw-Hill

Professional.

STT HVTN NIDUNGTHCHIN1 LXunLong TngquanvFTTx2 NguynVnMinh

CckthuttrinkhaiFTTx3 NguynVnNam4 PhmTunVit CcdchvtrnFTTx5 ChampiNamaxay Xuhngphttrin
http://en.wikipedia.org/wiki/Fiber_to_the_xhttp://en.wikipedia.org/wiki/Fiber_to_the_xhttp://en.wikipedia.org/wiki/Fiber_to_the_x

29094960-fttx

Documents