Download - Slide 3G
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Thc hin:NguynNgcTin - 09520441Ng Thnh Lun - 09520421SmVit Anh Khoa - 09520137
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I. Tnh hnh sdng Internet Vit NamII.Thno l cng ngh 3G
III.Cng ngh 3G
IV.Cc tiu chun 3G thng miV.u & nhc im ca mng 3G
VI.Tnh hnh th trng 3G Vit Nam
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I. Tnh hnh sdngInternet Vit Nam
Biutng trng Internet Vit Nam thng7-2010
http://static.vietcoding.com/wp-content/uploads/2010/09/bieu-do-tang-truong-internet-viet-nam-thang7-2010.jpg -
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II.Th no l cng ngh 3G
3G l thut ng dng ch cc h thng thng tin ding th h th 3 (Third Generation). c rt nhiungi nhm ln mt gia hai khi nim 3G v UMTS(Universal Mobile Telecommunications Systems).
Mng 3G (Third-generation technology) l th h th baca chun cng ngh in thoi di ng, cho php truyn
c d liu thoi v d liu ngoi thoi (ti d liu, giemail, tin nhn nhanh, hnh nh...).
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Tin thn ca cng ngh 3G l 1G & 2G cng vi2.5G
immnhca cng ngh ny so vi cng ngh 2Gv 2.5G l cho php truyn, nhn cc d liu, mthanh, hnh nh cht lng cao cho c thu bao c
nh v thu bao ang di chuyn cc tc khcnhau.
Quc gia u tin amng 3G vo sdngrng rilNhtBn. Vo nm 2001, NTT Docomo l cng tyu tin ra mt phin bn thng mi ca mng W-CDMA
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III.Cng ngh 3G
Da trn cimca cc xut, nm 1999, ITU phn cc xut thnh 5 nhmchnh v xy dng thnh chun IMT-2000. Nm 2007, WiMAX cb sung vo IMT-2000:
ITU IMT-2000 Tn thng dngBng thng d
liu M t
TDMA Single-Car
rier (IMT-SC)EDGE (UWT-136)
EDGE
Evolution
Cn gi l TDMA mtsng mang. L tiu chuncphttrint cc hthng GSM/GPRS hin c ln GSM2+.
CDMA Multi-Carr
ier (IMT-MC) CDMA2000 EV-DO Cn gi l CDMA a sng mang. y l phin bn 3G cahthng IS-95 (hin nay gi l cdmaOne).
CDMA Direct Spr
ead (IMT-DS)
UMTS
W-CDMA
HSPA
y thcchtl 2 tiu chun "h hng". Chun IMT-DScn gi l CDMA triph dy trctip, hay UTRA FDDhoc WCDMA. Chun IMT-TC cn gi l CDMA TDD, hayUTRA TDD, ngha l hthng UTRA sdngphngphp song cng phn chia theo thi gian (Time-divisionduplex). UTRA l tvitttca UMTS Terrestrial RadioAccessCDMA TDD
(IMT-TC)
TD-CDMA
TD-SCDMA
FDMA/TDMA
(IMT-FT)DECT
y l tiu chun cho cc hthngthitbinthoistmngn chu u.
IP-OFDMA WiMAX (IEEE 802.16)y l tiu chun IEEE 802.16 cho vicktni Internet
bng thng rngkhng dy khong cch ln.
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IMT-2000 a ra cc yu cu cho cc mng di ng th h k tip
bao gm:+Tng dung lng h thng+ Tng thch ngc vi cc h thng thng tin di ng trc
y (gi l 2G)+ H tr a phng tin
+ Dch v d liu gi tc cao, vi cc tiu chun v tc truyn c xc nh:>2Mbps khi ng yn hay trong khu vc ni th>384Kbps khu vc ngoi vi>144Kbps khu vc nng thn
> Vi thng tin v tinh,kh nng ph sng rng,tc truyn s liu c kh nng thay i.
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IV.Cc tiu chun 3G thng mi
Cng ngh 3G c nhc n nh l mt chunIMT-2000 ca T chc Vin thng Th gii(ITU), thng nht trn th gii. Tuy nhin, trnthc t cc nh sn xut thit b vin thng lntrn th gii xy dng thnh 4 chun 3Gthng mi chnh:
W-CDMA CDMA 2000
TD-CDMA
TD-SCDMA
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V.u & nhc im ca mng 3G
1.u im
Bng thng cao
Lun lun-online thitb2.Nhc im Chi phcao
Ngun inln
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VI.Tnh hnh th trng 3G VitNam
Ngy nay c nhiu thit b 3G, tiu biu l cc dng in
thoi 3G nh Iphone, Black Berry, mt s model caNokia..., mi loi thiet bi 3G u c cc u im v nhcim ring. Ngi dng cn cn c vo iu kin v nhucu s dnga ra la chn tt nht cho mnh.
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USB 3G
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WWAN 3G
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Data Card 3G
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Chn thnh cmn