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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
16
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
20
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
21
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
22
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
23
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
26
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)
28
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.
29
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.
31
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).