cÔng nghỆ v5

Hc vin cng ngh bu chnh vin thng

MC LC

TRANG

Ph Lc..................................................................................... 2 A-M u .................................................................................... 3 1.Ni dung nghin cu ................................................................. 3 2.L do nghin cu ....................................................................... 3 3.Phm vi nghin cu ................................................................... 3 4.Phng php nghin cu ........................................................... 3 5.Ti liu nghin cu .................................................................... 3 B-Ni dung......... .......................................................................... 4 I - Gii thiu chung ....................................................................... 4 1.1- Khi nim ............................................................................... 4 1.2 - Cu trc ................................................................................. 4 1.3 - c im ............................................................................... 5 1.4 - Chc nng ............................................................................. 6 II - Phn loi .................................................................................. 7 2.1 - Cc tiu chun bin son ....................................................... 7 2.2 - Giao din V5.1 ...................................................................... 7 2.2.1 - c tnh .............................................................................. 7 2.2.2 - Chc nng .......................................................................... 7 2.3 - Giao din V5.2 ...................................................................... 7 2.3.1 - c tnh .............................................................................. 7 2.3.2 - Chc nng .......................................................................... 8 2.4 So snh V5.1 v V5.2 .......................................................... 9 III-ng dng V5.x ........................................................................ 9 C-Kt lun ................................................................................... 10

Cng ngh V5.x

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PH LC

Danh mc hnh v, bng biu

Tn Giao din V5.x

Trang 4

M hnh OSI

5

S chc nng V5.x

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Chc nng V5.2

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Bng so snh mt s c tnh chnh ca 2 giao din V5.1 v V5.2

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A-M UCng ngh V5.x 2


I - NI DUNG NGHIN CU - Cng ngh V5.x

II - L DO NGHIN CUHiu c cc c im k thut ca cc cng ngh truy nhp thng dng theo cc nhm tng ng vi mi trng vt l m chng s dng.-

III PHM VI NGHIN CU-

1 mc trong chng 3 gii thiu v cc cng ngh truy nhp.

IV - PHNG PHP NGHIN CU-

c hiu v lc nhng chnh.

V - TI LIU NGHIN CU- Ths.Dng Th Thanh T,nh xut bn hc vin cng ngh bu chnh vin

thng,Mng v cc cng ngh truy nhp,nm 2010.

B-NI DUNG

Cng ngh V5.x

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I - GII THIU CHUNG1.1- KHI NIM Giao din V5.x l giao din gia mng truy nhp vi tng i ch dng h tr tng i.Cung cp cc dch v bng hp v tng bn knh phm vi ca tng i. 1.2 - CU TRC

Giao din V5.x

1.3- C IM - Quy nh cc giao thc thuc lp vt l,lp lin kt d liu,v lp mng ca m hnh OSI.

Cng ngh V5.x

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M hnh OSI - V5.x c cu trc l giao thc m => nhm p ng yu cu ca khch hng truy nhp vo mng ..PSTN,ISDN,Internet... - Khng hn ch mt cng ngh hoc phng tin truy nhp no. - Hiu qu kt ni im cung cp dch v vi mng truy nhp cao,do d nhiu nh sn xut quc t tun th. - phc tp ca V5.x l do phi lm nhiu yu cu c bn ring r. - gim phc tp ny th phi xa b cc cng ngh khng cn thit=>m bo hiu truyn qua giao din V5.x 1 cch trong sut. -Vic nhn thng tin bo hiu v to ra l do tng i,khng thuc mng truy nhp.

Cng ngh V5.x

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1.4 - CHC NNG Giao din v5.x gm - Knh mang ti lu lng thc hin truyn ti 2 chiu : cc knh B(n nh cho cc cng ISDN c bn. cc knh 64bit/s m ha theo A-PCM(n nh cho cc cng khch hng PSTN, ISDN. - Knh truyn thng ( knh c ) truyn ti cc ng truyn thng. knh C vt l ( l 1 khe thi gian trn giao din V5.2 c gn truyn ti knh c logic ). knh C logic ( n khng cha C-past truyn ti giao thc phng v ). Ta,c s nhng chc nng chnh ca V5.x:

S chc nng ca V5.x

II-PHN LOI2.1- CC TIU CHUN BIN SON - ITU-T:

Cng ngh V5.x

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G964-tiu chun V5.1(ban hnh 6/1994) G964-tiu chun V5.2(ban hnh 3/1995) - Chu u: ETSI 300-320-1-->chun v5.1(ban hnh 1/1994) ETST 300-347-->chun V5.1(ban hnh 11/1994) Vit Nam (do tng cc bu in Vit Nam 17/11/1999) TCN68-184:1999 V V5.1 TCN 68-185:1999 V V5.2

2.2 GIAO DIN V5.1 2.2.1 - c tnh - Ch c mt lung E1:2048kbit/s. - C 30 khe thi gian cho (30 thu bao in thoi tng t A). 15 thu bao ISDN tc 2B+D.hoc kt hp 2 loi khng vt qu knh B. - Kt ni V5.1 cung cp gm(knh thoi Analog,knh thu ring hoc analog,knh thu bao ISDN tc c bn). - Cc khe thi gian dnh cho mi thu bao l c nh. 2.2.2 - Chc nng (ging nhng chc nng chnh ca V5.x nu phn trn) 2.3 - V5.2 2.3.1 - c tnh - V5.2 cung cp ti a 16 lung E1 2048kbit/s. - Kt ni V5.2 cung cp ( knh thoi analog,knh thu ring hoc analog, knh thu bao ISDN tc c bn v s cp ) - 1 lung c 31 khe thi gian. - C 2 lung ty theo khe thi gian 16 lm chc nng hot ng hoc d phng m to ra lung s cp hay th cp. - Cc khe thi gian 16 ca cc lung khc cng c th lm cc knh B=>c th lm 31 knh B. - V5.2 h tr s kt hp ca cc thu bao PSTN, ISDN. - Thu knh vi s lng theo h s tp trung thu bao c thit k trc trnh hin tng ngn mch.

Cng ngh V5.x

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2.3.2 - Chc nng Ngoi cc chc nng ging v5.1 v5.2 cn c cc chc nng khc l: - iu khin cc lung 2048kbit/s trn giao din. - iu khin kt ni knh ti:tch v nhp cc kt ni knh ti theo yu cu cho cc chc nng tp trung. - Phng v cc knh thng tin: iu khin vic bo v chuyn mch cho cc knh thng tin b nh hng bi s c ca tuyn ni 2048kbit/s.

S chc nng V5.2

2.4 - So snh V5.1 v V5.2

Cng ngh V5.x

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Bng so snh mt s c tnh chnh ca 2 giao din V5.1 v V5.2

III - NG DNG Giao din V5.x c khae nng c ng dng trong nhiu phng thc truy nhp thu bao nh DLC,RLC,PON

Cng ngh V5.x

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C-KT LUNGiao din V5.x chun, v nguyn tc cho php bt k h thng thit b truy nhp no h tr giao din V5.x chun, c th kt ni vi bt k tng i ch no vi iu kin tng i ny cng h tr giao din V5.x chun. iu ny rt quan trng i vi cc nh khai thc ni ht v h khng b ph thuc nhiu vo hng cung cp thit b; ng thi c iu kin la chn c thit b ph hp nht vi nhu cu v iu kin ca h. Thm vo , vi mng truy nhp, nh khai thc c th truyn ti dch v hiu qu hn v an ton hn ti cc i tng s dng. Chnh v vy m giao din V5.x ang c cc nh khai thc vin thng c bit quan tm.

Cng ngh V5.x

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Bng thut ng vit ttDLC ISDN LE PON RLC PSTN Digital Line Carrier Intergrated Service Digital Network Local Exchange Passive Optical Network Remote Line Concentrator Public Switched Telephone Network B cung cp mch vng thu bao s Mng s tch hp a dch v Tng i ni ht Mng quang th ng Tng i phn tn Mng chuyn mch in thoi cng cng

Cng ngh V5.x

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cÔng nghỆ v5

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