This document provides an overview of TEMS Investigation and TEMS Visualization, two optimization tools from Ericsson. TEMS Investigation allows users to collect, analyze, and post-process network data to verify and optimize UMTS, GSM, GPRS, and EDGE networks. It helps troubleshoot issues like dropped calls, coverage imbalance, pilot pollution and missing neighbors. TEMS Visualization analyzes statistics from Ericsson's OSS to identify problems like missing neighbors, pilot polluters and call issues using a call event analyzer and other features. The document describes the capabilities and interface of both tools.

1. Introduction to Optimization
Tools
Pankaj Ogale
Technical Support Engineer
– Making Wireless Better

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TEMS Real-time Diagnostic Tools
 TEMS Investigation
– Based on log-files collected during drive test
 TEMS Visualization
– Based on GPEH data from Ericsson OSS

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TEMS INVESTIGATION- OVERVIEW
• Complete solution- collect, analyze and post-process
network data
• GSM, GPRS, EDGE & UMTS support
• Supports UEs from different vendors
• Post-processing functionality – Route Analysis module
• Reports – UMTS RAN Tuning report

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• Verify
- UMTS & GSM inter-system handover and cell-reselection
- Compressed mode behavior
- UMTS & GSM system accessibility
• Optimize
- UMTS & GSM coverage and performance
- Soft handovers
• Trouble-shoot
- Drop Calls, coverage imbalance
- Pilot Pollution
- Missing Neighbors
TEMS Capabilities

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• Verify
- UMTS & GSM inter-system handover and cell-reselection
- Compressed mode behavior
- UMTS & GSM system accessibility
• Optimize
- UMTS & GSM coverage and performance
- Soft handovers
• Trouble-shoot
- Drop Calls, coverage imbalance
- Pilot Pollution
- Missing Neighbors
TEMS Capabilities – IRAT Handover

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Troubleshooting with TEMS
Problems Symptoms
Pilot channel failure - high
downlink interference
Pilot Ec/No <-16dB
Pilot RSCP better than –100dBm
High DL RSSI
Drop Call
Pilot channel failure - out of pilot
coverage
Pilot Ec/No <-16dB
Pilot RSCP < -100dBm
Low DL RSSI
Drop Call
Pilot pollution In idle or Cell_FACH mode, UE is
unable to camp on a cell
In Cell_DCH mode, UE has high
Active Set update rate
Uplink and pilot coverage
imbalance
Pilot Ec/No >-16dB
UE transmit power at maximum
Drop call

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Troubleshooting – Missing Neighbor I

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Troubleshooting – Missing Neighbor II

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Troubleshooting – Missing Neighbor III

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Troubleshooting - Pilot Pollution

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Post-processing functionality
• New Route Analysis module which supports multiple log-
files simultaneously
• Data selector for choosing views and tasks
• Map views to display routes and binning
• Pre-defined tasks include analysis of coverage, handover
and calls

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Route Analysis – Missing Neighbor

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Route Analysis – Pilot Pollution

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Route Analysis – Pilot Coverage

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Route Analysis – Data Selector

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Route Analysis – Synchronized View
 In the Project view, select a specific event and utilize
the full synchronization in workspace.

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Post-Processing
WCDMA RAN Tuning Report - Highlights
 Fast, easy creation of WCDMA tuning report in Word
format
 Produces plots in MIF format
 Provides flexibility to customize the report template
 Supports both TEMS Investigation scanner and UE
measurements
 Supports long call (Retainability) and short call
(Accessibility) categorization
 Provides close to 40 charts/tables and 140 text objects
– Potential Neighbor Candidate table to find missing neighbor
– Pilot coverage information
– Voice, CS and PS KPI statistics

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Post-Processing
WCDMA RAN Tuning Report – Example charts
 Supports both Scanner and CS/PS UE Measurement
Distribution chart of Access Failures
73.0%
14.3%
1.6% 3.2% 1.6% 3.2% 3.2%
Random Access Failure RRC Connection Setup not received RRC Connection Reject
RRC Connection Complete not sent Call Proceeding not received Radio Bearer Setup not received
Alert or Connect not received
Pilot Coverage Chart Ec/No vs RSCP (Scanner)
-25
-20
-15
-10
-5
0
RSCP (dBm)
Ec/No
(dB)

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Post-Processing
WCDMA RAN Tuning Report – Example charts
 Provides Key Performance tables & charts
Cluster
RSCP >= -
92
-92> RSCP >=
-95
-95> RSCP >= -
107
RSCP < -
107
Any
RSCP
Coverage
Class
Percentage
Ec/No >= -9.7 91.60 0.54 0.61 5.95 98.70 Level 1 91.60
-9.7 > Ec / No >=
-12
0.79 0.11 0.11 0.00 1.01 Level 2 1.44
-12 > Ec / No >= -
16
0.04 0.00 0.18 0.00 0.22 Level 3 0.94
Ec/No < -16 0.04 0.00 0.00 0.04 0.08 Level 4 6.03
Any Ec/No 92.47 0.65 0.90 5.99 100 Total 100

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Post-Processing
WCDMA RAN Tuning Report – Example charts
 Provides engineering-level call classification and coverage
analysis on a cell level for verification and troubleshooting
Call Setup Failure Distribution
0
2
4
6
8
10
12
14
Itibantyou_1
SC122
Sendai_3
Sendaihontyou_2
Sendai_1
Sendaichuo_3
KokubuntyouNisi_2
Sendaichuo_2
Sendaihontyou_1
Missing
SC
Itibantyou_2
Cell Name (SC)
Total
Call
Setup
Failure
0
5
10
15
20
25
30
35
40
45
Total
Call
Attempts
Alert or Connect not received Call Proceeding not received Measurement Control not received
Radio Bearer Setup not received Random Access Failure RRC Connection Complete not sent
RRC Connection Reject RRC Connection Setup not received Total Attempt

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Post-Processing
WCDMA RAN Tuning Report – Example charts
 Plots (Binned Scanner, Binned UE and Event)

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Post-Processing
WCDMA RAN Tuning Report – Example charts
 Potential neighbor candidates
55 TEMS_-_Cell_names
Cell UARFCN SC CI CI_N_1 CI_N_2 CI_N_3 CI_N_4 CI_N_5
IMT-SANGUUBASHI1 96 1 2 3 4 5 6
IMT-SANGUUBASHI2 104 2 1 3 4 5 6
IMT-SANGUUBASHI3 112 3 1 2 4 5 6
IMT-SHINJUKUSAMON1 293 4 1 2 3 5 6
IMT-SHINJUKUSAMON2 301 5 1 2 3 4 6
IMT-SHINJUKUSAMON3 309 6 1 2 3 4 5
TEMS Cell File
Cell SC CI SC1 SC2 SC3 SC4 SC5 SC6 SC7 SC8 SC9 SC10 SC11 SC12 SC13 SC14 SC15
IMT-SHINJUKUSAMON3 309 6
301
(68)
293
(14)
106
(14)
90
(1)
236
(1)
220
(1)
104
(0)
112
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
IMT-SHINJUKUSAMON2 301 5
309
(35)
293
(11)
220
(3)
228
(8)
173
(1)
104
(0)
112
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
IMT-SHINJUKUSAMON1 293 4
309
(9)
301
(7)
82
(3)
90
(7)
58
(4)
74
(1)
173
(1)
106
(11)
104
(0)
112
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
IMT-SANGUUBASHI3 112 3
104
(0)
293
(0)
301
(0)
309
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
IMT-SANGUUBASHI2 104 2
96
(3)
112
(0)
293
(0)
301
(0)
309
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
IMT-SANGUUBASHI1 96 1
104
(3)
88
(2)
128
(1)
112
(0)
293
(0)
301
(0)
309
(0)
120
(0)
136
(0)
150
(0)
158
(0)
IMT-
SHINJUKUSUMIYOSHI2
82 32
293
(3)
90
(3)
74
(7)
173
(3)
301
(1)
Condition:
Ec/NoNth cell SC >= Ec/NoBest Serving cell SC – NeighHyst dB
Compare scanner data with existing cell file

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Post-Processing
WCDMA RAN Tuning Report – Example charts
 Potential neighbor candidates
Cell SC CI SC1 SC2 SC3 SC4 SC5 SC6 SC7 SC8 SC9 SC10 SC11 SC12 SC13 SC14 SC15
Cell1 309 6
301
(68)
293
(14)
106
(14)
90
(1)
236
(1)
220
(1)
104
(0)
112
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
Cell2 301 5
309
(35)
293
(11)
220
(3)
228
(8)
173
(1)
104
(0)
112
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
Cell3 293 4
309
(9)
301
(7)
82 (3)
90
(7)
58
(4)
74
(1)
173
(1)
106
(11)
104
(0)
112
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
Cell4 112 3
104
(0)
293
(0)
301
(0)
309
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
Cell5 104 2
112
(0)
293
(0)
301
(0)
309
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
Cell6 96 1
112
(0)
293
(0)
301
(0)
309
(0)
120
(0)
128
(0)
136
(0)
150
(0)
158
(0)
Neighbor OK! Not in the Neighbor List
 Potential to be added
In the Neighbor List but Not Measured
 Potential to be removed
Potential Neighbor Scrambling Code (Sample Count)

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Post-Processing
WCDMA RAN Tuning Report – Example charts
 KPI information and call statistics
Cluster Level Key Performance Indicators Result
CS Call Set-up Success rate 86.7%
Total Dropped Calls 8
Call Time between Drop (s) 60.8 min
Total Cluster Retainability 97.9%
Handover Success Rate 99.8%
Cell SC
Total Call
Attempt
Total Call Setup
Failure
Total Dropped
Call
Total SHO
Attempt
SHO Success
Rate
CELL11 0 16 1 1 36 100%
CELL104 104 8 0 0 15 100%
CELL106 106 18 2 0 52 100%
CELL112 112 57 4 0 81 100%
CELL114 114 22 18 0 22 100%
CELL120 120 43 1 0 145 100%
CELL122 122 0 0 1 22 95.5%
CELL123 123 6 0 0 32 96.9%
Dropped Call Classification
0
1
2
3
4
CELL324
CELL301
CELL122
CELL72
CELL48
CELL40
CELL16
CELL0
Cell
Occurrences
DL Poor Coverage DL Poor Coverage (Next Event:Registration) High DL BLER
Distribution chart of Access Failures
67.4%
13.4%
0.5%
8.6%
0.5%
2.1%2.1%
0.5% 4.3% 0.5%
Random Access Failure RRC Connection Setup not received
RRC Connection Reject RRC Connection Complete not sent
Measurement Control not received Call Proceeding not received
Radio Bearer Setup not received Radio Bearer Setup not received (Next Event:Registration)
Alert or Connect not received Connect Acknow ledge not sent
Key Performance Indicator Cluster Table
Key Performance Indicator Cell Table

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RAN Tuning Report – Pilot
Pollution

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RAN Tuning Report – PS Data
Performance

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TEMS Visualization – Overview
 PC-based, single-user data analysis tool
 Revolutionary new optimization capabilities for both
GSM and WCDMA
– Analyzes statistics at the regional level; performs detailed
analysis down to individual call level
– Solves problems that were impossible to solve before
 Sequence problems
 Problems related to particular phones
 Uses data collected by the Ericsson OSS

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TEMS Visualization Data Flow
GPEH
Main window
OSS RC
Application server
R-PMO
Parser
PC with
TEMS Visualization
File system
BSC
RNC
R-PMO
Main window
GPEH
Parser
WCDMA Module
GSM Module
WCDMA

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Highlights of TEMS Visualization
WCDMA Module
 Shows full details of all calls on an Ericsson WCDMA
network based on GPEH output
 Provides a unique opportunity to identify missing
neighbors and pilot polluters
 Key Features
– Call Event Analyzer
– Missing Neighbor Locator
– Pilot Pollution Detector

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WCDMA – Call Event Analyzer
 Analyzes all calls
in your network
– Dropped calls
– SHO problems
– Call-flow problems
– Interference
problems
– RAB usage

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WCDMA – Call Event Analyzer

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WCDMA – Missing Neighbor
Locator
 Optimizes the WCDMA
neighbor plan
– Suggests missing
neighbors per cell as
reported by the mobile
– Drills down for analysis of
each missing relation
– Graphically displays all
information on a map for
easy analysis
– Exports to Excel

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WCDMA – Missing Neighbor Locator

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WCDMA – Pilot Pollution Detector
 Finds the most polluted cells
– Detects which cells are suffering from pilot pollution
– Detects cells causing pilot pollution
– Drills down for detailed analysis of possible polluting cells
– Displays information graphically as well as in list views
– Exports to Excel

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WCDMA – Pilot Pollution Detector

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WCDMA – Pilot Pollution Detector

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