Ngô Quang Thắng

7/31/2019 Ng Quang Thng

1/22

1

HC VIN CNG NGH BU CHNHVIN THNG

----------------------------

NG QUANG THNG

QUY HOCH MNG V TUYNWCDMA V NG DNG CHOMNG 3G CA IVNTELECOM

TI H NI GIAI ON 2011 -2015

LUN VN THC S K THUT


2/22

2

H NI - 2011

M U

1. L do chn ti

Ha chung vi s pht trin ca th trng di ng th

gii, trong nhng nm gn y th trng di ng Vit Nam

c nhng bc pht trin vt bc. Hng lot cc nh mng

tham gia vo cuc chy ua nhm cung cp cho khch hng cc

tin ch di ng hin i nht vi cht lng dch v cao nht.

Th trng di ng 3G hin ang bc vo giai on cnh tranh

cng thng nht, tnh n thi im hin ti c 4 nh mng

chnh thc cung cp cc tin ch 3G cho khch hng l

Vinaphone, Mobifone, Viettel v EVNTelecom, ngoi ra mt s

nh mng khc cng ang chun b nhng bc cui cng trc

khi khai trng chnh thc. Trong qu trnh pht trin mng cc


3/22


4/22

4- Thc t: kho st tnh hnh pht trin kinh t, tnh hnh

pht trin mng vin thng trn a bn thnh ph H Ni

kt hp vi nh hng pht trin v hin trng mngEVNTelecom t a ra cc tnh ton quy hoch mng

v tuyn 3G ca EVNTelecom ti H Ni giai on 2011

- 2015.

Lun vn c b cc lm 3 chng:

Chng 1: Tng quan v mng thng tin di ng 3G WCDMA

UMTS v bi ton quy hoch mng ca EVNTelecom.

Chng 2: Mng 3G WCDMA UMTS v phng php quy

hoch mng.

Chng 3: Quy hoch mng v tuyn 3G ca EVNTelecom ti

H Ni giai on 2011 2015.

Chng 1

TNG QUAN V MNG THNG TIN DI NG 3G

WCDMA UMTS V BI TON QUY HOCH MNG

CA EVNTELECOM

Chng ny s tm hiu v xu hng pht trin ca

mng v dch v thng tin di ng. Tip theo gii thiu v cng

ngh v h thng 3G WCDMA UMTS, cui cng l gii thiu

v t ra bi ton quy hoch mng 3G cho EVNTelecom.

1.1 S PHT TRIN CA MNG V DCH V THNG

TIN DI NG

1.1.1 S pht trin ca dch v thng tin di ng

Hin nay chng ta ang sng trong thi i cng nghthng tin nn nhu cu trao i thng tin ngy cng tr nn a


5/22

5nng cung cp cc loi hnh dch v trn do i hi cn phi

nng cp ln mt cng ngh mi hin i hn.

1.1.2 S pht trin ca cng ngh mng

Dch v thoi, s liu, a dch vTruy nhp gi tc caoTruyn dn s

Hnh 1.1: Xu th pht trin ca cng ngh mng

Qu trnh pht trin ca cng ngh mng c th c m

t trc quan tronghnh 1.1.

1.2 GII THIU CNG NGH V H THNG 3G

WCDMA UMTS

1.2.1 Cc qu trnh chun ho

3G WCDMA UMTS c xy dng v c chun hoqua nhiu phin bn R99, R4, R5, R6, R7, R8, R9.

1.2.2 Cng ngh truy nhp v tuyn WCDMA trong h

thng UMTS

WCDMA l cng ngh a truy nhp phn chia theo m

bng rng s dng cho phn giao din v tuyn cho h thng

thng tin di ng th h 3 UMTS. WCDMA c cc c im:L h thng a truy cp phn chia theo m tri ph dy


6/22

6C tc chip l 3,84 Mcps vi rng sng mang 5

MHz, nn c gi l h thng bng rng.

H tr m hnh hot ng c bn: ch song cngphn chia theo tn s FDD v song cng phn chia theo

thi gian TDD.

WCDMA h tr hot ng ca cc trm gc d b.WCDMA p dng k thut tch sng kt hp trn c

ng ln v ng xung da vo vic s dng knh

hoa tiu.

1.3 VN QUY HOCH MNG 3G CA

EVNTELECOM

Cng ty thng tin Vin thng in lc (EVNTelecom) l

mt n v thnh vin trc thuc Tp on in lc Vit Nam

c giao nhim v vn hnh m bo an ton, thng sut cc

knh thng tin ngnh in kt hp vi kinh doanh Vin thng

cng cng.

H thng thng tin di ng ca EVNTelecom s dng

cng ngh CDMA2000 1x hot ng bng tn 450Mhz cung

cp 3 loi hnh dch v chnh: in thoi c nh khng dy (E-

com), di ng ni tnh (E-phone) v di ng ton quc (E-

Mobile).

Nm 2009, EVNTelecom chnh thc ginh c giy

php thit lp mng v cung cp dch v 3G ca B Thng tin

v Truyn thng di tn thuc l C: 1950 1955 MHz ng

ln v 2140 2150 MHz ng xung. Sau thi gian trin khai

u t xy dng, thit lp c s h tng thng tin mng, sngngy 09/06/2010 EVNTelecom chnh thc khai trng mng


7/22

7thng th h th 3, cho php truyn c d liu thoi v d liu

ngoi thoi (ti ln/ti xung d liu, gi email, tin nhn nhanh,

hnh nh, video). im ni bt nht ca mng 3G so vimng 2G nm kh nng cung ng truyn thng gi tc cao

nhm trin khai cc dch v truyn thng a phng tin trn

mng di ng.

Mng 3G mi ca EVNTelecom c pht trin trn nn

tng WCDMA (tiu chun IMT-2000) thuc di tn 1900-2200

MHz h tr tc ln n 2Mbps ti cc vng nng thn v 7

Mbps ti ba thnh ph ln. Bn cnh trong tng lai cn

nng cp ln h tr HSPDA vi tc ln n 14 Mbps gip

cho tc truy nhp Internet tng gp 6 ln so vi EDGE

(mng GSM) v 8 ln so vi GPRS (mng GSM).

Tt c cc thit b in thoi di ng, thit b h tr truy

cp kt ni internet theo chun ca UMTS hay cn gi l

WCDMA bng tn 2200Mhz u s dng c dch v 3G ca

EVNTelecom.

Mc tiu ca EVNTelecom l mang n mng 3G cht

lng tt, n nh, gi cc thp, cnh tranh v c nhiu tin

ch gi tr gia tng c sc cho khch hng.

Trong qu trnh pht trin, xy dng mng cng nh cc

doanh nghip khc EVNTelecom lun quan tm vn quy

hoch mng nhm t c cc mc tiu sau:

m bo, ti u ho vng ph sng.m bo dung lng cung cp cc dch v a phng

tin bng thng rng, cht lng cao cho khch hngvi gi c cnh tranh.


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8Ti u ho chi ph lp t, xy dng mng.Thun tin cho vic vn hnh, bo dng mng.Thun tin cho vic nng cp, m rng mng.To li th cnh tranh cho doanh nghip.Nng cao v th doanh nghip trn trng vin thng.Hiu qu trong vic s dng ph tn.

Chng 2

MNG 3G WCDMA UMTS V PHNG PHP QUY

HOCH MNG

Chng ny s trnh by cu trc c bn ca h thng

3G UMTS v cc k thut s dng trong mng WCDMA phc

v cho vic quy hoch mng v tuyn WCDMA s trnh by c

th chng 3, ng thi gii thiu phng php chung

quy hoch mng.

2.1 CU TRC H THNG THNG TIN DI NG

3G UMTS

Theo kin trc chc nng, h thng UMTS bao gm mt

s cc phn t mng logic, chng c nhm thnh cc nhm

chc nng:


9/22

9Mng truy nhp v tuyn RAN (mng truy nhp v

tuyn mt t UMTS l UTRAN): mng ny thit lp

tt c cc chc nng lin quan n v tuyn.Mng li (CN): thc hin chc nng chuyn mch, nh

tuyn cuc gi v kt ni d liu n cc mng ngoi.

Thit b ngi s dng (UE): giao tip vi ngi sdng v giao din v tuyn.

2.1.1 Cc thnh phn mng

Thit b ngi s dng (UE) Cc phn t ca UTRAN. Cc phn t chnh ca mng li CN Mng ngoi c th chia thnh 2 nhm: cc mng

chuyn mch knh v cc mng chuyn mch gi.

2.1.2 Cc giao din c bn

Giao din Cu: l giao din gia USIM v ME.Giao din Uu: y l giao din v tuyn WCDMA. Uu

l giao din nh my di ng truy cp c vi phn

c nh ca h thng.

Giao din Iu: kt ni UTRAN ti mng li.Giao din Iur: giao din mIur h tr chuyn giao

mm gia cc RNC t cc nh sn xut khc nhau.

Giao din Iub:Iub kt ni mt Node B v mt RNC.2.1.3 Cu trc mng truy nhp v tuyn UTRAN

Gm 2 phn chnh l B iu khin mng v tuyn

(RNC) v Node B.


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10

Hnh 2.3: Cu trc UTRAN

2.2 CC K THUT TIN TIN DNG TRONG

WCDMA

2.2.1 K thut tri ph trong thng tin di ng

C 3 k thut tri ph c bn:Tri ph chui trc tip DS/SS.Tri ph nhy tn FH/SS.Tri ph dch thi gian TH/SS.

2.2.2 iu khin cng sut

iu khin cng sut nhm iu chnh cng sut trn

ng ln v ng xung gim thiu nhiu ng knh mbo QoS yu cu.

H thng WCDMA s dng 2 kiu iu khin cng sut:

iu khin cng sut vng hOLPC.iu khin cng sut (nhanh) vng kn (CLPC).

2.2.3 Chuyn giao mm

Quy hoch chuyn giao mm ban u l mt trong ccphn c bn ca vic quy hoch v ti u ho mng v tuyn.

C 4 kiu chuyn giao trong h thng WCDMA l:

Chuyn giao bn trong h thng (Intra - System HO); Chuyn giao gia cc h thng (Inter System HO); Chuyn giao cng (Hard Handover: HHO); Chuyn giao mm (SHO) v chuyn giao mm hn

(S f HO)


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112.2.4 Truy nhp gi tc cao HSDPS, HSUPA

2.2.4.1 Truy nhp gi ng xung tc cao HSDPA

Mc tiu ca HSDPA l m rng giao din v tuyn caWCDMA, tng cng hiu nng v dung lng ca WCDMA.

2.2.4.2 Truy nhp gi ng ln tc cao HSUPA

HSUPA c a vo WCDMA R6. HSUPA m bo

ci thin dung lng v hiu nng ng ln.

2.3 QUY HOCH NH C MNG

Trong phn ny lun vn s trnh by nhng nguyn tc

c bn, chung nht ca quy hoch mng v tuyn.

nh c mng v tuyn WCDMA l mt qu trnh quy

hoch ban u trong cu hnh ca mng v quy m cc thit

b mng c tnh ton da vo cc yu cu ca nh khai thc.

Cc yu cu ca nh khai thc lin quan n cc c

im: vng ph, dung lng, cht lng dch v (QoS).

Mc tiu ca pha nh c mng l tnh ton mt site v

cu hnh site yu cu cho cc vng ph quan tm. Trong bao

gm 2 bc c th sau: tnh ton vng ph sng, phn tch dung

lng.

2.3.1 Nguyn l v c im quy hoch mng v tuyn

2.3.1.1 Nguyn l chung

Cng vic quy hoch mng v tuyn bao gm: nh c

mng, quy hoch lu lng v vng ph chi tit v ti u mng.

Trong gii hn ca lun vn ny s khng trnh by v ti u

mng.


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12

.

Hnh 2.16: Qu trnh quy hoch v trin khai mng

WCDMA

Trong pha quy hoch ban u (nh c mng) cung cp

mt s nh gi ban u nhanh nht v kch c ca mng nh

s site, cu hnh trm gc, cc thnh phn mng v dung lng

ca cc thnh phn phc v cho cc d bo v chi ph v vn

u t cho d n xy dng mng. nh c mng phi thc hin

c cc yu cu ca nh khai thc v vng ph, dung lng v

cht lng dch v.Trong pha quy hoch chi tit, mt site nh c c

x l trn bn s gii hn v mt vt l cc thng s ca

mng.

2.3.1.2 c im ca quy hoch mng v tuyn

a) D bo

Ty theo quy hoch mng l mi hay pht trin t nntng mng hin c m d bo nhu cu dch v c th khc nhau.

b) Quy hoch vng ph v tuyn

Nhim v chnh ca phn tch vng ph l lm th no

xc nh c: ni no cn ph sng, kiu ph sng mi vng.


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13c) Nhiu t nhiu nh khai thc khc

Trong mi trng c nhiu mng hot ng vi cc tn s

gn nhau, tn hiu c th gy nhiu ln nhau lm nh hng ncht lng, vng ph v dung lng mng.

2.3.2 Tnh ton vng ph sng

2.3.2.1 Phn tch vng ph

Mc ch ca qu trnh kho st ny bao gm:

m bo cung cp dung lng ph hp cho cc vng.Bit c c im truyn sng ca vng.2.3.2.2 Tnh ton qu ng truyn v tuyn

Qu ng truyn trong h thng WCDMA dng tnh

ton suy hao ng truyn cho php ln nht tnh ton vng

ph (tnh bn knh cell) ca mt trm gc v trm di ng. Cc

thnh phn tnh suy hao cho php ln nht ca tn hiu t

trm pht n trm thu gi l qu ng truyn. Qu ng

truyn tng qut cho c ng ln v ng xung bao gm

mt s cc thnh phn c trnh by chi tit trong lun vn.

2.3.2.3 Tnh bn knh cell

Sau khi tnh c suy hao ng truyn ln nht cho

php da vo cc tham s qu ng truyn v tuyn (RLB),

bn knh cell r c th c tnh theo mt trong cc m hnh

truyn sng bit. Khi tnh c bn knh ph sng ca

cell th c th tnh c din tch ph sng ca cell (ph thuc

vo cu hnh Sector ca Node B) theo cng thc:2.S K r (2.7)

Trong :Kl h s ng vi s sector trong cell2 3 3 Phn tch dung lng


14/22

14Khi bt u xy dng mng 3G, cc nh khai thc cn

phi c thng tin v nh gi kh chnh xc v s pht trin v

phn b thu bao, v chng c nh hng trc tip n vngph. Vic nm r thng tin v dung lng cn c tc dng m

bo tit kim chi ph u t phn cng trong qu trnh quy

hoch trin khai mng li WCDMA.

Phn ny lun vn s gii thiu m hnh tnh ton

dung lng Erlang-B, cc phng php chuyn i lu lng

h thng theo m hnh Erlang v cui cng l nh c dung

lng mng

2.3.3.3 nh c dung lng mng

Trnh by cc tnh ton s b dung lng mng theo yu

cu ban u tng ng vi s thu bao c d bo trc.

2.3.4 nh c RNCMc tiu ca vic nh c RNC l xc nh s RNC cn

x l mt lu lng nht nh.


15/22

15Chng 3

QUY HOCH MNG V TUYN 3G CA

EVNTELECOM TI H NI GIAI ON 2011 - 2015Chng ny trnh by v bi ton quy hoch mng. ng

dng quy hoch mng v tuyn 3G ca EVNTelecom ti H Ni

giai on 2011 - 2015.

3.1 C S TON HC PHC V CHO VIC QUY

HOCH MNG

Phn ny lun vn s trnh by 2 m hnh truyn dn cbn l m hnh Hata-Okumura v Walfisch-Ikegami lm c s

ton hc cho vic tnh ton suy hao truyn dn.

3.2 QUY HOCH VNG PH V DUNG LNG CHI

TIT

Trong pha quy hoch nh c ban u xc nh cs lng site v cu hnh s b ca mng. n pha hoch nh

chi tit, cn d liu truyn thc t t cc vng hoch nh,

cng vi mt ngi s dng c d bo v lu lng ngi

s dng. Cc thng tin v cc site trm gc ang tn ti cng

cn tn dng cc s u t cho cc site c. u ra ca

hoch nh chi tit vng ph v dung lng l v tr trm gc,cu hnh v cc thng s. C th vic quy hoch vng ph v

dung lng chi tit theo cc bc sau:

3.3 NG DNG QUY HOCH MNG V TUYN 3G

CA EVNTELECOM TI H NI GIAI ON 2011

2015

3.3.1 Cc tham s u vo phc v cho vic quy hoch


16/22

16Cc tham s u vo phc v cho vic quy hoch mng

bao gm cc loi chnh sau:

Cc tham s thc t: din tch, dn s chi tit tng vngcn quy hoch.

Cc tham s gi thit: s lng thu bao d kin,vv.Cc tham s theo thit b (tu thuc vo nh sn xut).Chi tit trong cc mc c th ca lun vn.

3.3.2 D bo thu bao

Da trn din tch, tnh hnh pht trin dn s, kinh t x

hi, nhu cu s dng dch v 3G ti H Ni. Cn c theo th

phn dch v di ng cng nh nh hng pht trin 3G ca

EVNTelecom. D kin thu bao 3G ca EVNTelecom ti H

Ni nh sau:

Thu bao tng khu vc trong nm 2015= (20% i vi

khu vc Dense Urban, Urban, 8% i vi khu vc Suburban v

4% i vi khu vc Rural) * dn s khu vc.

3.3.3 Quy hoch vng ph sng

3.3.3.1 Thit k vng ph lin tc

Trong cc h thng UMTS c s ph thuc ca vng ph

sng vo lu lng h thng. D tr ng truyn (Link

budget) cho WCDMA c tnh trong mi trng a dch v.

Trong mi trng ny, mi loi thu bao c th s dng mt

loi dch v c thuc tnh khc nhau nn phi tnh ton cho tng

loi dch v. Qu trnh tnh ton bao gm tnh ton cho c

ng ln v ng xung. Vng ph sng ca mt cell s l

gi tr nh nht. n gin ta ch cn xc nh mt loi dchv c ph sng lin tc c trng cho tng vng quy


17/22

173.3.3.2 Tnh ton qu nng lng ng truyn

Tng ng vi tng loi thit b (Node B, UE) khc nhau

s c cc thng s khc nhau phc v cho vic tnh ton qunng lng ng truyn. Trong lun vn ny gi thit mt s

thng s ph hp nht c ly theo nh sn xut Huawei.

Tn hao nng lng ng truyn ln nht (L) = EIRP

(dBm) - nhy thu (dBm) + li anten thu (dBi) - Tn hao

cp Rx (dB) - Tn hao c th pha Rx (dB) + li phn tp +

li chuyn giao mm - D tr fading nhanh(dB) - D trfading chm - Tn hao trong nh (dB)

Bng tnh ton qu nng lng ng truyn (chi tit

trong bng 3.8 ca lun vn).

3.3.3.3 Tnh bn knh Cell v din tch Cell

Sau khi tnh c tn hao nng lng ng truyn ln

nht ta tnh c bn knh Cell site (r). T ta tnh c din

tch vng ph sng Node theo cng thc sau:2*S K r , K =1.95 vi anten 3 sector (3.18)

3.3.3.4 S lng Node B

S Node B = Din tch vng cn ph/din tch ph ca

mt Node B (din tch cell).(3.19)

3.3.4 Quy hoch dung lng v cu hnh Node B

3.3.4.1 Dung lng thu bao/Node B

Cn c vo d bo thu bao tng khu vc ta tnh c s

thu bao/Node B

3.3.4.2 Tnh ton dung lng CE Node B

S CE ca Node B c tnh bng s CE ln nht ca sCE uplink v CE downlink, ng thi phi lm trn vi bi s


18/22

183.3.4.2.1 Tnh ton cho ng Uplink

a) Tnh s Erlang trn mi NodeB i vi dch v thoi

Tng s Erlang Voice (CS 12.2)= S lng thu bao *% Thu bao thoi * Erlang cho mi thu bao thoi.

Tng s Erlang Voice (CS 64)= S lng thu bao * %

Thu bao CS64 * Erlang cho mi thu bao CS64

S dng bng Erlang B tra s knh cho mi NodeB

(vi GoS l 2%) ta c s knh dch v thoi CS12.2, CS 64.

CE Thoi = S CE dch v voice CS 12.2 * H s sdng CE thoi (Uplink) + S CE dch v CS 64 * H s s dng

CE CS64 (Uplink)

b) Tnh s Erlang trn mi NodeB i vi dch v data

Cc dch v Data c phng php tnh CE ging nhau,

tu theo tc nh ca gi cc m h s s dng CE ca cc

gi cc c khc nhau.

Tng s knh data = S lng thu bao * % Thu bao

Data * Tc d liu / Tc

Upload nh ca gi cc

= S lng thu bao * % Thu

bao Data * Dung lng d

liu * 8 / 3600 / Tc

Upload nh ca gi cc

i vi ng Uplink, Tng s knh PS 64/64 = S knh

cho Uplink dch v PS 64/64 + S knh Uplink cho dch v

HSDPA

Tng s CE cho dch v Data c tnh:CE data= Tng s knh PS 64/64 * H s s dng CE


19/22

19dng CE PS 64/128 (Uplink) + Tng s knh PS 64/384 *

H s s dng CE PS 64/384 (Uplink)

c) Tng s CE trn Node BTng s CE trn NodeB cho ng Uplink c tnh

bng tng s CE cn thit i vi cc dch v thoi, D liu v

HSDPA cng thm phn CE dnh cho chuyn giao:

Tng CE = (CE thoi + CE data ) * (1 + T l chuyn giao)

3.3.4.2.2 Tnh ton cho ng Downlink

Tnh ton cho ng Downlink tng t nh ngUplink tng ng vi cc thng s tnh cho ng Downlink.

Tnh ton cu hnh cho Node B: tnh ton dung lng CE

theo nguyn tc ch cc khu vc Dense Urban, Urban, Suburban

c trang b Node B c HSDPA, khu vc Rural c trang b

Node B thng, chi tit trongbng 3.14 (cu hnh Node B giai

on t 2011 2015).

Vi gi thit 01 sng mang (carrier), Node B h tr 128

CE. Cu hnh Node B d kin giai on 1 v 2 trongbng 3.15.

3.3.5 La chn v tr t Node B

La chn v tr t Node B cn c vo tiu ch sau:

Cn c h tng hin c ca EVNTelecom. u tin h tng sn c ca EVNTelecom, ng thi ch

trng n cc khu vc c c im dn c v kinh t

pht trin ca t nc.

Vi cc khu vc quan trng cn ph sng mEVNTelecom cha c h tng hoc h tng khng s

dng li c s xem xt u t mi. Nhng s lngtrm s m bo mc thp nht.


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203.3.6.1 S lng RNC

Ti H Ni, vi s lng Node B tnh ton n nm 2015

l 836 Node B. Theo bng nng lc RNC ca Huawei th cn 01RNC u ni, qun l cc Node B trn a bn H Ni.

3.3.6.2 nh c bng thngcc giao din IuB, IuCS, IuPS

a) Bng thng giao din Iub gia cc Node B v RNC

Iub l giao din kt ni t cc Node B n RNC. V lu

lng Uplink t Node B ti RNC bao gi cng nh hn lu

lng Downlink t RNC ti Node B, nn tnh dung lngIub, cng nhIuPS, IuCS ta ch cn tnh cho ng Downlink.

Bng thng trn giao dinIub c tnh nh sau:

BWIub = BWtraffic + BWsignal (tnh cho mi Node B)

Trong bng thng cho traffic bao gm lu lng thoi

CS 12.2, video call CS 64, lu lng cho cc dch v data.

Bng thng cho lu lng bo hiu bao gm bng thng cho

lu lng bo hiu gia thit b u cui v Node B (BWUu sig)

v lu lng bo hiu gia Node B v RNC (BWNBAP sig).

BWsignalling = BWUu sig + BWNBAP sig

BWtraffic = BWCS 12.2 + BWCS 64 + BWPS

Bng thng DL trn giao din Iub pha RNC kt ni n

tt c cc Node B c tnh bi:

BWIub RNC = SoNodeB

i

cacdichvuBW

Bng tnh chi tit s E1 cn thit kt ni cc Node B

v RNC (bng 3.18 ).

T bng 3.18 ta tnh c BWIub RNC (nm 2015) =

4107.94 Mbps


21/22

21c) Bng thng giao din Iu gia RNC v thng mng li

(MSC-S, MGW, SGSN)

Giao dinIu gm 02 giao din IuCS kt ni v h thngMGW/MSC-S cho lu lng chuyn mch knh (CS) v giao

din IuPS kt ni v h thng SGSN cho lu lng chuyn

mch gi (PS)

Bng thng cho lu lng DL trn giao dinIuCSBWIuCS traffic = (TPCS 12.2 Trung bnh/NodeB * S Node B/RNC

* 1/CIuCS voice + TPCS 64 Trung bnh /Node B * S Node B/RNC *1/CIuCS CS 64K)/Hiu sut trunking

Bng thng cho bo hiu trn giao dinIuCSBWIuCS sig = BWIuCS sig/user * S thu bao/RNC * (1/CIuCS

sig)/1024/1024/ hiu sut bo hiu

Bng thng cho lu lng DL trn giao dinIuPSBWIuPS traffic = TPPS trung bnh /NodeB * S Node B/RNC * (1/CIuPS)

/ Hiu sut trunking

Bng thng cho bo hiu trn giao dinIuPSBWIuPS sig = BWIuPS sig/user * S thu bao/RNC * (1/CIuPS

sig)/1024/1024 /Hiu sut bo hiu

Tng bng thng truyn dn trn giao dinIu

BWIu = BWIuCS traffic + BWIuCS sig + BWIuPS traffic + BWIuPS sig

Tnh ton ta c cc thng s cu hnh RNC nhbng 3.19.

S Node B/RNC = 836. S Node B c HSDPA = 773. S thu bao/RNC = tng s thu bao ti H Ni nm

2015 = 734.670 thu bao. TrafficCS = TrafficCS 12.2 + TrafficCS 64 =


22/22

22KT LUN

Kt thc lun vn t c cc kt qu nh sau:

- Trnh by tng quan v cng ngh 3G WCDMA UMTS cng nh cc yu t nh hngn quy hoch mng v tuyn WCDMA.

- Gii thiu phng php chung quy hoch mng.- Quy hoch mng v tuyn 3G ca EVNTelecom ti H Ni giai on 2011 - 2015.Kh khn ch yu ca lun vn l nhiu tham s vn ly theo cc gi tr in hnh ca nh

cung cp thit b, cha thc hin c quy hoch cho mng li (CN) do kt qu thit k ch

dng mc nghin cu v phng php. Cc hn ch s l c s cho hng pht trin tip

theo ca lun vn.

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