8/11/2019 OWT DT vs TT Presentation
1/34
Aug, 2014
Driver Testing andTECHTRACE comparison
8/11/2019 OWT DT vs TT Presentation
2/34
AGENDA
DRIVE TESTING
TOOLS USED FOR DT
MODES OF DRIVE TESTING
USE OF DRIVE TESTING
KPIs OF DRIVE TETING
8/11/2019 OWT DT vs TT Presentation
3/34
DRIVE TESTING
Drive testing is the most common way to analyse Cellular
Network performance by means of
coverage evaluation
system availability
network capacity
network retainabilitycall quality
8/11/2019 OWT DT vs TT Presentation
4/34
AGENDA
DRIVE TESTING
TOOLS USED FOR DT
MODES OF DRIVE TESTING
USE OF DRIVE TESTING
KPIs OF DRIVE TETING
8/11/2019 OWT DT vs TT Presentation
5/34
TOOLS USED FOR DT
Drive Testing requires the following tools
Power supply usually using inverter in the
GPS with external antenna
TEMS MS
TEMS Software
Laptop
Laptop
TEMSHandset
8/11/2019 OWT DT vs TT Presentation
6/34
8/11/2019 OWT DT vs TT Presentation
7/34
MODES OF DRIVE TESTING
Drive testing is done with following modes:
Dedicated / Continuous / Long Call Mode
Idle Mode
Sequential / QOS / Short Call Mode
SCAN
8/11/2019 OWT DT vs TT Presentation
8/34
8/11/2019 OWT DT vs TT Presentation
9/34
Idle Mode
The MS is ON but no call occur.
MS receives information from the base station on the Broadcast
Control Channel (BCCH)
Checks if its able to register its current location to the network
8/11/2019 OWT DT vs TT Presentation
10/34
Sequential / QOS / Short Call Mode
Creating the sequence of call along the drive test activity
Before starting the route create call sequence,
for example: Create call for 70 s and idle for 10 s.
Along the drive test, play this sequence until the route is finished
To see the real network
performance run, whenpeople call
8/11/2019 OWT DT vs TT Presentation
11/34
Scan Mode
One of TEMS feature
scan all or selected frequencies on the selected spot or route
To find the clearest frequency
Application of frequency plan
to find the best frequency to
be use in the site
to identify interference adjacent
channel and co channel
Clean Frequency
8/11/2019 OWT DT vs TT Presentation
12/34
8/11/2019 OWT DT vs TT Presentation
13/34
USE OF DRIVE TESTING
In Planning :Drive Test Before Installation
Perform drive test before our network implemented.This data later will be compared with drive test afterimplementation, to justify.
Drive Test Before SWAPBefore swap (change operator network), drive testing needed to compare thecurrent network with the network after swap. To justify the new network isbetter than before.
Drive Test BenchmarkingDrive test the whole area for the whole active networks, before our networkimplemented. So when our network implemented, can be competed well.
8/11/2019 OWT DT vs TT Presentation
14/34
USE OF DRIVE TESTING
In Implementation :Drive Test New Site/ Initial Drive TestInitiate the drive test after a site on-air.Make sure that site perform well after on-air.
Test Call New Site
Conducting tests call at a new On - Air site, to justify the performance of asite just after On - Air.
Drive Test Upgrade/Expand TRX After implement new TRX or expand TRX, a drive test performed to justify
that site working well with the new TRX .
Drive Test SFH/Hopping implementation After implement SFH/hopping in the network, a drive test performed to justify that this hopping solution working well with the whole network.
8/11/2019 OWT DT vs TT Presentation
15/34
USE OF DRIVE TESTING
In Optimization :Drive Test Handover/ Add & Delete neighbors
Drive test conducted after theres changing in neighbours database .Make sure the add really added and the delete really deleted.
Drive Test before & after DowntiltDowntilt conducting, to get better coverage from each antenna. Drive test performed to make sure
the better coverage from each angle changed.
Drive Test Network AuditPerforming drive test activity to maintain the whole network. Could be an annual work.
Drive Test Benchmarkperforming drive test to get justification about our network. Can compete or not. With comparing
the whole network including 'us in drive test.
Drive Test troubleshootingDrive test for special troubleshooting case. Such as, a site that cannot handover from sitessurround it, a site that cannot transmit good signal and cannot achieve its coverage.
8/11/2019 OWT DT vs TT Presentation
16/34
AGENDA
DRIVE TESTING
TOOLS USED FOR DT
MODES OF DRIVE TESTING
USE OF DRIVE TESTING
KPIs OF DRIVE TETING
8/11/2019 OWT DT vs TT Presentation
17/34
KPIs OF DRIVE TESTING
Undecoded BCCHBSIC Undecode in OtherSiteNo HandoverDelay HandoverPing Pong HandoverNegative HandoverCell OvershootingHigh OverlappingNo Dominant Server
Poor CoverageUnreasonable ServingAreaInterferenceHandover FailureHandover LossUL DropDrop CallSudden Power DropMS Power RapidIncreaseSQI (Speech QualityIndex)
8/11/2019 OWT DT vs TT Presentation
18/34
KPIs OF DRIVE TESTING
Non working sites/sectorsInactive features like freqhoppingDisabled GPRSMissing neighboursOne way neighboursC/A, C/I analysisCapacity problemsCoverage HolesFaulty Installations
8/11/2019 OWT DT vs TT Presentation
19/34
AGENDA
INTRODUCTION TO TECHTRACE
HOW IT WORKS
ARCHITECTURE
CONCEPT
REPORTING
TT-PRO AND TT-RANKPIs MEASURED BY TECHTRACE
8/11/2019 OWT DT vs TT Presentation
20/34
8/11/2019 OWT DT vs TT Presentation
21/34
HOW IT WORKS
TECHtrace PRO works stand alone at OSS
Measurements taken from OSS to investigate troubleshooting use
cases:
coverage
capacity
service
VIP performance
Information and measurements about the user group
experience are collected without tracers and DT equipment
8/11/2019 OWT DT vs TT Presentation
22/34
ARCHITECTURE
Detection of low Performance areasQuality of end user service; Areas with high blocking, call drop
and low experienced speed
Traffic analysis; Areas with high service usage, cell throughputand number of users
Coverage Performance ; Areas with poor signal level and/ or high
interference
8/11/2019 OWT DT vs TT Presentation
23/34
CONCEPT
8/11/2019 OWT DT vs TT Presentation
24/34
REPORTING
TECHtrace provide powerful reporting functionality:Table/Diagram
GIS Reporting
These include but are not limited to :
Coverage
Drops
Handover
Interference
Load
Neighbours
Parameter settings
Pre-drops
Quality
Service performance
Stability
Soft-drops
Swaps
User performance
8/11/2019 OWT DT vs TT Presentation
25/34
TECHTRACE PRO
TECHtrace PRO is able to investigate deeply within all
NW entities; (BTS, RNC NE level Cell cluster)
TECHTRACE PRO detects at OSS level use case
Performance monitoring trigger
The solution only requires SQL/NetAct/Nastar/excel/CSV-
import files
8/11/2019 OWT DT vs TT Presentation
26/34
TECHTRACE RAN
This tool and technology will be able to investigate
deeply the air interface and user view/experiences in
addition to TT PRO
TECHtrace RAN investigates at RNC/e-node B level air
interface/RRM RANPAR/, Cell cluster/Iub monitoring
Solution based on tracer or log file
Solution detects single users view, and substitutes mainly
Drive Test efforts
KPIs meas red b
8/11/2019 OWT DT vs TT Presentation
27/34
KPIs measured byTECHTRACE
TECHTrace is able to measure following KPIsAir Interface performance
Propagation Delay ,
RSCP,
CQI,TCP(total, R99, HSDPA),
Littlei (DL),
RTWP
RSSI
Fragmented cells,
Permanent distant access,
unstable/permament bad cells,
Root causes for high adj. cell interference,
Root causes for adjacent cell interference
8/11/2019 OWT DT vs TT Presentation
28/34
KPIs measured by
8/11/2019 OWT DT vs TT Presentation
29/34
KPIs measured byTECHTRACE
QoS Analysis
Blocking probability
Access failure rate
Service drop rate
Physical speed of a connection
Coverage probability
KPIs measured by
8/11/2019 OWT DT vs TT Presentation
30/34
KPIs measured byTECHTRACE
User Activity Analysis
Throughput
Number of users
Number of service requests
8/11/2019 OWT DT vs TT Presentation
31/34
BENEFITS of TECHtrace
Multi technology / multi vendor networkBased on open architecture which has nearly no limits for the storage
of the performance data
Can be distributed in a form of packagesE.g. WCDMA-RAN, LTE-RAN, CORE
Delivers innovative GEO maps for traffic
performance indicators.
Includes an open script engine component
based on JavaScript
ADVANTAGES OVER DRIVE
8/11/2019 OWT DT vs TT Presentation
32/34
ADVANTAGES OVER DRIVETESTING
With TT-PRO; NW investigations will be solved by 70% - 90%Done w/o air interface investigation
For further investigations TT-RAN will perform air interface investigationsLess labor intensive and time consumingMore comprehensive, based on large number of usersNot limited to time of test driveUplink and Downlink analysis possibleMakes NW optimization very efficient and reduces CAPEX/OPEXNo need of call flow monitoring, w/o tracer HW/SWIncludes E2E, field, RAN, NE plus auto analysis
Increasing data volumes and NW capacity, interferencewill grow and therefore DT will not indicate reliable cell loadmeasurements to give NPO results of NW improvementsTECHtrace PRO/ E2E-NE & user group investigationTECHtrace RAN/ reduced Drive-Tests/single user view
ADVANTAGES OVER DRIVE
8/11/2019 OWT DT vs TT Presentation
33/34
ADVANTAGES OVER DRIVETESTING
Daily briefing (E2E report)Drill down by auto-investigations/(fault) reportingContinuously data investigations to
perform Q2E by Geo-map & usingSmartTECH tools
8/11/2019 OWT DT vs TT Presentation
34/34
Q & A