3G Drive test procedure by Md joynal Abaden

1. Contents
1 Introduction
2 Drive test tools
3 Drive test type
4 Site Verification
5 Rigging Audit
6 Cluster Drive Test Optimization

2. Introduction:
Objectives:
The purpose of the drive test to perform the RF design verification, identify any
coverage and quality problems to optimise WCDMA network performance.
At this stage, the main focus is on fundamental end-to-end service accessibility
target (e.g. Calls set up and drop rates) and on performance targets such as
coverage related targets (such as CPICH RSCP and CPICH Ec/No), and
HSDPA/HSUPA speed performance.
For this case it was needed each other from drive test data collection and also
Physical site changes like tilting, antenna orientation and antenna height.
RF Solution Department

3. Drive Test Tools:
Hardware:
• 1x Laptop
• 2x/3x/4x Smart Phones (2G/3G/LTE)
• 1x FDD Data Dongle (should be supporting 3G 42M)
• 1x GPS (G-Star IV)
• 1x Car DC/AC Inverter
• 1x Car.
• 3x SIM Cards (Data & Normal) & 4x SIM Cards (Data & Normal)
5x SIM Cards (Data & Normal)
Software:
• TEMS Investigation 16.1
• Map Tools (Map Info & Google Earth)
• Cell File
RF Solution Department

4. Drive Test Type
Site Verification
Individual cell verification test : To investigate detail of site performance by
checking all single sectors with AMR call and Throughput test. In addition also
required to perform small area dedicated test for Intra/Intercell HO.
Cluster Optimization Normal Drive
To frame the potential area of the new site planned. Also to improve the important
neighboring sites for which the handover to be defined.
Cluster Optimization Dedicated Drive
Performed call to the test number and drive to the potential area given to determine
i) call set up time
ii) call set up success
iii) drop call
iv) SHO
v) HSDPA ( Average & Maximum) Speed
vi) Coverage Status ( Technology)
vii) Pilot polution
RF Solution Department

5. When the site is completely integrated, Drive tester team will start to perform site
investigation.
The detail sub-activities are outlined below:
1. Rigging Audit
2. Site Verification
3. Site corrective action (cross feeder, inconsistent data, functionality problem, etc.)
4. Acceptance Test
The site has been built and integrated as planned and that the planned coverage has
been achieved
Site Verification:
RF Solution Department

6. All Tests Clear?
Corrective Actions
No
Yes
New On Air Site Flow
New Site Integration
1. Consistency Check
2. Rigging Audit
3. Site Verification
Site Acceptance
Site Verification:
RF Solution Department

7. • Voice / Video calls
• Verify on per cell basis for all
carriers:
• RSCP
• EC/No
• Scrambling Code
• LAC / RAC
• Cell ID
• Etc.
• Data / Throughput test
• HSDPA and HSUPA / Internet
Browsing
• Verify on per cell basis for all
carriers:
• RSCP
• EC/No
• Scrambling Code
• LAC / RAC
• Cell ID
• Max/Ave Speed
• Etc.
Site Verification:
RF Solution Department

8. Static test
At the best radio location required to perform for all carriers
1. Voice call to determine if any call failure or block calls
2. Video call succesful
3. IRAT test for network reselection
4. Throughput R99/ HSDPA/HSUPA/Latency test using http / fttp and speedtest.
5. Internet browsing succesful
Mobility Test
1. Check intra cell HO in dedicated mode clockwise and anti clockwise 2 rounds for
each direction
2. Check inter cell HO in dedicated mode for the 1st layer per cell both ways.
Site Verification:
RF Solution Department

9. Rigging Audit
Test Items in Rigging Audit:
Antenna Installation Verification
- Azimuth
- Height
- Location
- Cross-feeder/s
Rigging Tools :
- Safety Belt
- Compass
- GPS
- Measurement tape
- Digital Inclinometer
Site Audit required from the Rigger
1. Panoramic photos surrounding sites including antenna sectors/objective area
2. Ensure no blocking sectors from the main beam antenna
3. Antenna mechanical/electrical tilt was in correct value
4. Antenna was in correct orientation for the objective/target area
5. Site Height
6. Site Coordinates
RF Solution Department

10. • Cluster Definition, Site Information Data and Site Location Map
• With Site/Cell ID, Site name, Primary SC, Neighbour list, RNC ID and
Cluster border highlighted
• Prepare Route Map for Drive Testing
• Perform drive test either Idle mode or Dedicated mode
• Identify Problematic Areas
• The result from the data will showing of Network performance such as
1. Drop call rate
2. Accessibility – mobile originated/terminated call set up success rate
3. Coverage – RSCP and Ec/No
Cluster Drive test Optimization:
RF Solution Department

11. Cluster Drive test Optimization:
RF Solution Department

12. • The area which doesn't meet the criteria below is defined as "Problematic Area“
• Coverage Problem Area
• Dominance Problem Area
• Pilot Pollution
Best Server’s CPICH RSCP < - 99 dBm
Best Server’s CPICH Ec/No < -14 dB
4th Best Server’s CPICH RSCP > - 99 dBm
Cluster Drive test Optimisation:
RF Solution Department

13. Thank You