HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
Drive test Training
Date : 16th August 2011 Prepared by : GCI Team
Content
Attentions
5
DT Preparation
2
1
Over View
DT test & scanning test & CW test
3
DT data process and analysis
Over View
Page 5
Content
Attentions
5
DT Preparation
2
1
Over View
DT test
3
DT data process and analysis
DT Preparation----Site and Map
1.Mapinfo tab (street, polygon)
DT preparation-- DCS Test methodology (updated at 2011.8.4)
Page 7 Laptop 1 Laptop 1 MS1=Idle MS2=Long call 199 MS3=EDGE UL Laptop 2Laptop 2 MS1=Short Call 199
MS2=GPRS DL Laptop 3 Laptop 3 MS1=EDGE DL MS2=GPRS UL RxLev RxLev HOSR HOSR EDGE UL EDGE UL CSSR, CDR, RxQual CSSR, CDR, RxQual GPRS DL GPRS DL EDGE DL EDGE DL GPRS UL GPRS UL Laptop 4 Laptop 4
DT Preparation--- WCDMA Test methodology (update at 2011.8.4)
Laptop 1
Laptop 1 MS1=Voice short call MO
MS2=Voice Short call MT MS3=PS Download
Laptop 2
Laptop 2 MS1=Video Short Call MO
MS2=Video short Call MT
Laptop 3
Laptop 3 MS1=Voice long call MO
MS2=Video long call MO
Voice CSSR,CDR Voice CSSR,CDR PS Download PS Download Voice SHOSR Voice SHOSR Video SHOSR Video SHOSR Video CSSR,CDR Video CSSR,CDR Scanner (PCTEL) PS Upload PS Upload MS3=PS Upload RSCP, EcIo RSCP, EcIo
DT Preparation----AXIS SSV Test methodology
Page 9 Drive Test Drive Test MS1=Idle (K800) Lock BCCH MS2=Long call 199 (K800) ----unlock BCCH RxLev RxLev HOSR HOSR Static Test Static TestMobile phone put on the back the front seat
DT Preparation----Test Route
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Content
Attentions
5
DT Preparation
2
1
Over View
DT test
3
DT data process and analysis
DT---Hardware configuration
Install Mobile phone driver and detect the hardware
Install Mobile phone driver and detect the hardware
Mobile phone setting
DT---cell first and command sequence
Page 15
Input Cell file
Input Cell file
Command sequence script
DT---Lock on the specified channel (GSM)
MS in Idle Mode
MS in Idle Mode
In dedicated mode, MS not handover to others
MS in Dedicated Mode
DT---Lock on the specified channel (WCDMA)
Page 17
MS in cell reselection Mode
DT---Focus on pad during test
Main pad, Radio parameters, current channel, serving, events
DT---Focus on pad during test
Page 19
Map and hopping channels information
DT---Focus on pad during test
L3 message information
DT---Focus on pad during test
Page 21
L3 message information
GPRS and EDGE
GPRS and EGDE Data Speed(kbps)
8.0 12.2 14.4 20.2 8.8 11.2 13.6 17.6 22.4 27.2 44.8 54.4 59.2 0.0 10.0 20.0 30.0 40.0 50.0 60.0 Speed(kbps) 8.0 12.2 14.4 20.2 8.8 11.2 13.6 17.6 22.4 27.2 44.8 54.4 59.2 CS-1 CS-2 CS-3 CS-4 MCS-1 MCS-2 MCS-3 MCS-4 MCS-5 MCS-6 MCS-7 MCS-8 MCS-9
4.check IMSI RF situation
1.Check the subscriber EcIo=? dB
600kbps
153kbps 307kbps 1.2mbps 921kbps
Scanning & CW Test----GSM CW test
Scanning & CW Test----WCDMA CW test
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Content
Attentions
5
DT Preparation
2
1
Over View
DT test
3
DT data process and analysis
Export file to tab mapinfo layer
Page 35
Page 35
Airport drive test (RxLevSub) Airport drive test (RxLevSub)
Airport drive test (RxQualSub) Airport drive test (RxQualSub)
1
2
3
After swap, it is use spit cell, S333->S444, increase capacity, we will make a flexible handover strategy. After swap, SOEWARNAMD,
upgrade capacity S322->S433, we will change handover strategy, make more easier HO to GSM900 strong signal.
SATUMUARETMG3 have no neighbor with
SOEWARNAMG1, we will create this neighbor.
Export file to tab mapinfo layer
•
High TDR analysis - Map
STOJIACMG3: 35% TA=4, large coverage area. After SWAP, TOC power 1.3 db larger than NSN.
SHERATONBDRMG3 57% TA>=4, wide coverage SHERATONBDRMG2
21% TA>=4, wide coverage SHERATONBDRMD3
Slow handoff from DCS1800 to GSM900…
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High Way DT results (RxLev Sub (dBm) )
The signal is good and the RxLev Sub (dBm) is above -85dbm
site distribution is far here, and the height is low, nearest site
PANTAIINDHUTMG height is 14 meters, some area in lower coverage
site distribution is far here, and the height is low, nearest site
PANTAIINDHUTMG height is 14 meters, some area in lower coverage
High Way DT results ( RxQual Sub )
The quality is poor due to have two plot
form site rukosibalecmd3 to site pluitmasintcmd1 ,slow
handoff ,make for quality poor
form site rukosibalecmd3 to site pluitmasintcmd1 ,slow
handoff ,make for quality poor
form site drsemerumd3 to site psjmbatanbsimd3 ,slow handoff ,make for quality poor
form site drsemerumd3 to site psjmbatanbsimd3 ,slow handoff ,make for quality poor
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总结一页
Area ID CellName or Spot description Suggestion
Airport 1STOJIACMG3 TDR>5% 35% TA=4, large coverage area. After SWAP, TOC power 1.3 db larger than NSN. Airport 2SHERATONBDRMG3 TDR>5% 57% TA>=4, wide coverage
Airport 3SHERATONBDRMG2 TDR>5% 21% TA>=4, wide coverage
Airport 4SHERATONBDRMD3 TDR>5% Slow handoff from DCS1800 to GSM900…
Airport 5Spot 1 poor quality
After swap, SOEWARNAMD, upgrade capacity S322->S433, we will change handover strategy, make more easier HO to GSM900 strong signal.
Airport 6Spot 2 poor quality SATUMUARETMG3 have no neighbor with SOEWARNAMG1, we will create this neighbor. Airport 7Spot 3 poor quality After swap, it is use spit cell, S333->S444, increase capacity, we will make a flexible handover strategy Highway 1RUKOSIBALECMD3 poor quality form site rukosibalecmd3 to site pluitmasintcmd1 ,slow handoff, will optimization handover parameter Highway 2DRSEMERUMD3 poor quality form site drsemerumd3 to site psjmbatanbsimd3 ,slow handoff, will optimization handover parameter
1. Background
there are two areas in cluster 306 in Poor coverage.
Area A is between JE032 And JE034, it is blocked by small hill and Dense forest. Area B is between JE034 and JE015, the road is waving up and down, signal is Blocked by road and tree.
Show the site map, terrain map and poor coverage area.
A
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2.Site configuration and status
Alarm:
show the alarm information here
Power Level:
show power level here
RF Parameters:
check the RNP value, check on site
Sector Azimuth(RNP )
Azimuth Tilt(RNP) Tilt
JE034GA 60 60 2 2
JE034GB 180 180 2 2
3.Drive Test result
In drive test (idle mode), the signal in this area is below -88 dBm, MS serving by JE032A(13121), the signal from JE034GC(13223) is very poor. this area is 1.6km from JE034GC, 3 km from JE032GA. show drive test result, rxlevel by idle mode!
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4. Analysis of poor coverage
the attitude of site is 200 meters, and the obstacle is 240 meters or so, the poor coverage area is 170 meters, the signal is blocked by the obstacles (A&B&C).
make a sketch of obstacle! Display attitude on the road!
hill s Attitude
4. Analysis of poor coverage
show the BCCH coverage, show the cells coverage area! .
JE034GC coverage
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4. Analysis of poor coverage
show the Terrain profile from site to poor coverage area!
4. Analysis of poor coverage 【 show picture of obstacle 】 1. picture from JE034 to hill A
2. picture from road to hill C 3. picture from road to hill B
1 2
Page 47
4. Analysis of poor coverage 【 picture on tower 】
1. picture from JE034 to hill A
Hill A Hill B
4. Analysis of poor coverage 【 picture on road 】 1. picture from JE034 to hill A
Page 49
4. Analysis of poor coverage 【 picture on road 】 2. picture from road to hill C
5. Conclusion
poor coverage is caused by:
√ obstacle
□ Hardware problem
□ Power Parameter configuration problem
□ RF parameter (Antenna Height, Azimuth, DownTilt) □ Neighbor List problem
1.interference, quality and C/I bad 2.slow handoff
3.overshooting
4.NCC+BCC, Training serial number
Page 51
Content
Attentions
5
DT Preparation
2
1
Over View
DT test
3
DT data process and analysis
attentions
1.Before drive test, make sure the task first….make sure everything is ready, such as tools, map, route, export report template
2.During drive test, make sure all the tools is working well.
On field engineer familiar with the KPI (RxLevl, RxQual,TA,C/I,serving cell) and events (access failure, call drop, download throughput, upload throughput)….. 3.After drive test, finished the report as soon as possible
Thank You
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