1

Hng dn m phng vng ph s dng phn mm

Forsk Atoll

2

MC LC

Bc 1: Khi ng Atoll v to Project .................................................................................. 3

1.1 File New From a Document Template (Hoc dng Ctrl-N) ... Error! Bookmark

not defined.

1.2. Chn cng ngh ............................................................................................................. 3

Bc 2: Thit lp cc tham s (m phng 2G GSM) .............................................................. 4

2.1 Chn h ta ................................................................................................................ 4

2.1.1.Chn Projection: H ta WGS84 v Zone 48 ..................................................... 4

2.1.2. Chn Display ( lm vic vi cc ta kiu decimal Lon/lat): ......................... 5

2.2. Import bn s ............................................................................................................ 7

2.2.1 Import bn a hnh ............................................................................................. 7

2.2.2 Import bn clutter ................................................................................................ 9

2.4 Thit lp d liu mng thc t. ..................................................................................... 12

2.4.1 Anten ...................................................................................................................... 13

2.4.2 Data base ................................................................................................................ 14

Bc 3: Chy m phng vng ph ........................................................................................ 20

3.1 Coverage by signal level: ............................................................................................. 21

3.2 Coverage by transmitter ............................................................................................... 25

3.2 Overlapping Zones ....................................................................................................... 28

Bc 4: To cc report t cc kt qu m phng c nh gi nh tnh v vng ph ...... 30

4.1 Cch to cc report: ...................................................................................................... 30

4.2 Cc loi report .............................................................................................................. 31

3

Bc 1: Khi ng Atoll v to Project

1.1 To Project mi

File New From a Document Template (Hoc dng Ctrl-N)

1.2. Chn cng ngh

+ M phng 2G (GSM): Chn GSM GPRS EDGE

+ M phng 3G (UMTS): Chn UMTS HSPA

4

Bc 2: Thit lp cc tham s (m phng 2G GSM)

2.1 Chn h ta

2.1.1.Chn Projection: H ta WGS84 v Zone 48

Vi Vit Nam: chn h ta WGS84 v chn Zone 48

5

2.1.2. Chn Display ( lm vic vi cc ta kiu decimal Lon/lat):

- Chn dng u tin (WGS 84 Lon/Lat)

6

- Chn nh dng cho ta : xx.xxxxS

7

2.2. Import bn s

Ti thiu cn import 2 loi bn : bn a hnh (DTM) v bn clutter (Clutter

Class)

2.2.1 Import bn a hnh

Trn thanh menu, chn file Import, sau ch n thc mc cha d liu bn s

DTM chn file Index.txt

Sau khi chn m file Index.txt s hin ra ca s xc nhn kiu d liu Chn Altitude

8

Nu import ng bn a hnh s hin ra nh hnh sau:

Ghi ch: Nu import sai hoc gp li bt thng, v bn hin khng ng th xa d

liu import i v import li:

Cch xa: tab GeoDigital Terrain Modelxa ln lt tng mnh (dng phm Del)

9

2.2.2 Import bn clutter class

Trn thanh menu, chn file Import, sau ch n thc mc cha d liu bn s

Clutter chn Index.txt

Sau khi chn m file Index.txt s hin ra ca s xc nhn kiu d liu Chn Clutter

Classes

10

Nu import ng bn Clutter s hin ra nh hnh sau:

Ghi ch:

- Ging nh vi bn DTM, nu xy ra li tron qu trnh import th phi xa i

import li.

- Import ng bn clutter class th trong m hnh truyn sng mi hin ln cc clutter

iu chnh h s. (Chi tit trong phn 2.3di y)

11

2.3 Thit lp m hnh truyn sng

Tab ParametersPropagation Model thit lp cc h s ca m hnh truyn sng.

Duplicate m Standard propagation Model, i tn m hnh va to ra (Copy of

Standard propagation Model) ri tin hnh thay i cc h s trn m hnh mi.

Cc h s ny c xc nh thng qua vic o kim CW v tinh chnh m hnh truyn

sng cho tng vng a hnh khc nhau.

- Tab General: Tn

- Tab Parameters: chn cc h s K

- Tab Clutter: H s suy hao ca tng clutter

Dng cc m hnh mc inh cng c th m phng c vng ph, tuy nhin chnh

xc khng m bo.

12

Ghi ch:

Tab Clutter s lit k tt c cc loi clutter c nh ngha trong bn s, do nu

import bn s ng th cc clutter mi xut hin

Cc h s trn y l m hnh tham kho ca qun ng a H ni, cc khu vc khc

c loi phn b nh ca tng t ng a th c th p dng.

13

2.4 Thit lp d liu mng thc t.

2.4.1 Anten

To d liu v cc loi anten ang dng thc t gm cc tham s (tn, tn s, beamwidth,

gain, tilt in, pattern )

Tab Parameters Radi Network Equipment Antennas

M cc anten mu thay i cc tham s cho ng vi cc loi anten ang dng trong

thc t. Cc tham s cn phi thay i bao gm:

- Tab General: tn anten, gain ca anten v tilt in

- Other Properties: beamwidth, tn s

- Horizontal pattern v Vertical Pattern: pattern ngang v dc ca anten.

Ghi ch:

Nu khng c d liu v pattern ca anten th c th dng pattern mc nh cng khng

gy sai s nhiu.

14

2.4.2 Data base

Bao gm cc d liu thc t ca mng li nh ta , cao, azimuth, tilt, .

2.4.2.1 Site

Cha cc d liu v v tr (ta trm). to data

- Dng MS excelto database dng file CSV vi cc trng nh sau

Name Longitude Latitude

HN257 105.8386 21.00636

HN027 105.8183 21.01647

Ghi ch:

- Tn cc trng phi chnh xc nh trong bng

- Lc b cc trm Inbuilding v trm di ng (nu c)

- Import Site data base bng cch vo tab Network, Double click v Site bng danh

sch cc site. Click Import

15

Chn file Site.CSV va to bc trn

Ghi ch:

-Khng m file CSV bng bt c phn mm no khc khi import),

-Chn 1st Data Row l dng th 2 phn mn t nhn cc trng ng th t (tn

cc trng phi chnh xc

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Nu nhp ng v tr cc site s hin trn bn nh hnh sau :

Ghi ch:

Nu c li, hoc d liu nhp vo khng ng, c th xa i import li.

xa, vo bng danh sch cc site chn tt c (Ctrl-A) ri xa (phm Del)

17

2.4.2.2 Transmitter

D liu v cao, azimuth, tilt, loi anten, m hnh truyn sng

- Dng MS excelto database dng file CSV vi cc trng nh sau

Site Trans

mitter

Antenn

a

Heig

ht

(m)

Azim

uth

()

Mechanical

Downtilt () Main

Propagation

Model

Cell

Type

Freque

ncy

Band

Cha

nnel

s

BC

C

H

B

SI

C

HI10

04

HI1004

1

858DG

65T6ES

Y

5 50 0 Hanoi_SPM Macro

Cell 900

GSM

900

82 51 51

HI10

04

HI1004

2

858DG

65T6ES

Y

5 110 0 Hanoi_SPM Macro

Cell 900

GSM

900

64 46 40

HI10

05

HI1005

1

APX18-

206516

V-CT6

15 180 6 Hanoi_SPM Macro

Cell

1800

GSM

1800

775

809

73

6

6

HI10

05

HI1005

2

APX18-

206516

V-CT6

15 270 6 Hanoi_SPM Macro

Cell

1800

GSM

1800

772

785

71

9

53

Ghi ch:

- Tn cc trng phi chnh xc nh trong bng

- Lc b cc cell Inbuilding, v cell di ng (nu c)

Gii thch cc trng:

- Site: M trm

- Transmitter: M cell

- Antenna: tn anten (tn chnh xc theo tn anten t phn anten)

- Height (m): D cao anten so vi mt t (m)

- Azimuth (): hng cell

- Mechanical Downtilt (): tilt c

- Main Propagation Model: M hnh truyn sng (tn chun xc theo tn m hnh

i phn m hnh truyn sng)

Cell Type: Loi cell (Macro Cell, Micro Cell), vi trm 900 t l Macro Cell 900

- Frequency Band: Cc cell dng tn 900Mhz t l GSM 900, cc cell dng tn

1800Mhz t l GSM 1800

- Channels: cc tn s cell ang c cu hnh (bao gm c tn BCCH)

- BCCH: tn BCCH

- BSIC: m BSIC

Sau khi c file CSV tin hnh import d liu transmitter: tab Network Transmitter

18

Tng t nh phn import site database, chon 1st data row l 2 soft t nhn cc

trng.

19

Khi import thnh cng cc transmitter s hin trn bn v c dng thng bo thnh

cng nh hnh sau,

Ghi ch:

- Nu trn ca s event khng phi thng bo nhp thnh cng m l thng bo li th

phi sa li data base a theo cc li thng bo v tin hnh import li.

- Cc li thng xy ra do tn cc trng khng ng, d liu khng ng (v d trng

kiu s b ln cc k t, ) cc li ny s c thng bo chi tit trong ca s event (gc

tri di), c th c l khc phc

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Bc 3: Chy m phng vng ph

NetworkPrediction(Right click)New

C mt s bi m phng vng ph c bn nh sau:

Coverage by transmitter: Tnh ton vng ph ca tng trm

Coverage by signal level: Tnh ton mc tn hiu ln nht ti cc v tr

Overlapping zones: Vng chng ln ca cc cell

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3.1 Coverage by signal level:

NetworkPrediction(Right click)New Coverage by signal level

Ca s thit lp cc thuc tnh

3.1.1 Tab General:

Name: Tn ca bi m phng (c th thay i d qun l)

Resolution: phn gii (thng chn theo bn s hin c, v d bn s Viet

nam v Viettel ang c l loi c phn gii 20m), chn phn gii cng nh vng ph

v ra cng chi tit, tuy nhin my chy cng lu v tn ti nguyn my yu khng nn

chn phn gii qu nh

3.1.2 Tab Conditions: Cc thng s mc nh

3.1.3 Tab Display: Thit lp cc mu theo mc tn hiu d quan st v nh gi

Thit lp di mu t ng bng cch: Action Shading

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ca s thit lp mu t ng:

First break: mc tnh hiu ln nht (-65dBm) tng ng vi mu start colour (xanh bin)

Last break: Mc tn hiu yu nht mun hin th (-105dBm) tng ng mu End colour

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Interval: Bc nhy (nu First break > Last Break th Intervel l s m v ngc li)

Sau khi thit lp s c cc di mu nh sau:

(C th chnh trong sut ca vng ph tin quan st trn nn bn thng qua

thanh trt Opaque v Transparent- Ko cng v pha Opaque th vng ph cng r v

ngc li)

Sau khi click OK, trong thc mc Prediction s xut hin bi m phng va to ra.

Right click s sut hin menu cc thuc tnh v hnh ng vi bi m phng:

Properties: quay li thay i cc thit lp

Calculate: tin hnh m phng .

bt u chy vng ph theo mc tn hiu (Coverage by signal level) chn Calculate

24

Ch cho my tin hnh tnh ton, chng ta s c kt qu m phng vng ph nh sau.

Ghi ch:

- Nhn vo bn ph sng c th nhn inh c vng lm, vng sng tt, vng sng

yu.

- Trn bn vng ph khi di chut vo cc im s hin ln mc thu ca im .

- C th nh gi c hin trng ph thng qua cc con s thng k vng ph (% din

tch c mc thu tt, % din tch sng yu) nh tnh nng to bo co (s cp chi tit trong

bc 4)

25

3.2 Coverage by transmitter

M phng ny xc nh c gii hn vng ph ca tng cell, theo nguyn l ti mt

im cng tn hiu ca cell no mnh nht th im thuc vng ph ca cell .

tin quan st v nh gi, cn i mu cc vng ph bi cc transmitter thng qua i

mu hin th ca cc transmitter.

NetworkPediction (right click)Properties, trong tab Display Display Type chn

Automatic

Kt qu hin th, cc transmitter c cc mu khc nhau.

To bi m phng Coverage by transmitter

Vo tab NetworkPrediction(Right click)New Coverage by Transmitter

Ca s thit lp cc thuc tnh

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Vo tab General thay i phn gii cho ph hp, cc thit lp khc mc nh.

Sau khi thit lp xong, cc bi m phng s hin trong th mc Prediction, tin hnh tnh

ton, right click v chn calculate (hoc n F7)

Ch my tnh ton, s c kt qu hin th nh sau:

27

Ghi ch:

- Nhn bn c th xc nh c khu vc c ph bi tng trm (thng qua cc mu

khc nhau.

- C th xc nh din tch ph ca tng cell thng qua tnh nng to report (chi tit

trong bc 4)

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3.2 Overlapping Zones

Mc ch ca bi m phng l ch ra cc khu vc c ph chng ln bi nhiu cell. To

bi m phng bng cch:

Vo tab NetworkPrediction(Right click)New Overlapping Zones

Ca s thit lp cc thuc tnh:

Tab General t tn bi o v phn gii

Tab Conditions mc nh

Tab Display: thit lp hin th mu theo s lng cell ph chng ln.

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Sau khi thit lp cc tham s y , bi m phng chng ln s xut hin trong thc

mc Predictions cng vi cc bi m phng khc. Tin hnh tnh ton (tng t nh cc

bi khc)

30

Bc 4: To cc report t cc kt qu m phng c nh gi nh tnh v

vng ph

4.1 Cch to cc report:

Tab NetworkPrediction, Right click v cc bi m phng c tnh ton chn

Generate Report, xut hin cc la chn xut bo co, chn Surface (km2) xut cc bo

co v vng ph.

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4.2 Cc loi report

- Coverage by signal level: Cho nh gi v din tch c ph vi cc mc tn hiu:

- Coverage by transmitter: Cho bit din tch ph ca tng cell

- Overlapping zones: Cho bit din tch cc vng chng ln

32

4.2 Export ra Google earth

Mc ch l a bn vng ph ln bn Google earth nh gi chnh xc cc khu

vc, cc tuyn ng

Vo Tools Export to Google Earth

Chn cc d liu export:

33

- Site: s xut ton b cc site ln GE

- Transmitters: xut ton b d liu transmitters ln GE

- Coverage Plots: Chn cc bi m phng to phn trn (tt c cc bi c to s

c list trong phn ny) Tick vo cc bi mun xut ln GE

Ghi ch:

Nu chn Coverage by transmitter s xut d liu rt nng (ph thuc vo s lng

trm), v s xut tng cell mt. Khuyn ngh my yu khng nn chn.

34

Sau khi xut my s t ng m Google Earth (nu my c ci Google earth) v s y

ton b d liu vo GE nh hnh di y

Sp xp v lu tr li cc d liu ny di dng kml (kmz).