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Fast and Easy WCDMA RAN Tuningwith TEMS™ DeskCat

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WCDMA RAN Tuning reports inTEMS DeskCat 5.1 allow network 

engineers to quickly and easily

assess the radio access network 

(RAN) performance of their 

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WCDMA networks.

By Anne Decker 

 Figure 1

Drop Call Details

3%13%2%

5%

1%

18%

1% 8%

4%

34%

DL Coverage

DL Interference

High DL BLER

High TX Power 

High UL TX Power & DL

BLER

Network Commanded

Releases_DL Coverage

Network Commanded

Releases_High UL TX

Power 

Network Commanded

Releases_Not Classified

No Date

Not Classified

Ordinarily, a team of engineers would have to devote a full day

to inspecting network problems and generating reports – after

collecting data from the field. The WCDMA RAN Tuning Re-

port application in TEMS DeskCat can reduce that time to one

hour or less. An engineer’s time is valuable. Ericsson TEMS

strives to allow engineers to make better use of it.

BENEFITS TO ENGINEERS, MANAGERS, AND

MARKETING TEAMS

WCDMA RAN Tuning reports serve the purposes of engineers,

managers, and marketing teams.

Engineers: Detailed call classification charts and tables pro-

vide valuable information to engineers who are responsible for

identifying and correcting network deficiencies. A chart show-

ing dropped call details, for example, would be meaningful to

these users. Figure 1 is an example.

Managers and Marketing Teams: WCDMA RAN Tuning re-

port options include charts and tables that provide statistics

on Key Performance Indicators (KPI) in the cluster. Summary

data such as the call set-up success rate and number of

dropped calls is especially geared toward managers and mar-

keting teams who want a high-level view of network perform-

ance. See Table 1 for an example of cluster-level information.

GENERATE REPORTS EASILY 

The new WCDMA RAN Tuning reports in TEMS DeskCat con-

sist of a wide range of charts and tables for both scanner andUser Equipment (UE) data that is collected by TEMS Investi-

gation WCDMA. Reports containing charts and text are gen-

erated in Microsoft® Word format. Plots are produced in MIF

format that can be imported into MapInfo®.

Users build the reports by selecting options in a TEMS DeskCat

wizard and inserting bookmarks in a Microsoft Word template.

This gives them complete control over which elements will be

included in a report. In addition, they can define which thresh-

olds are used for statistics calculations.

 After taking a few moments to set up the report, the user can

walk away and let TEMS DeskCat dynamically generate the

Table 1

Cluster Level Key PerformanceCluster Level Key PerformanceCluster Level Key PerformanceCluster Level Key PerformanceCluster Level Key Performance

IndicatorsIndicatorsIndicatorsIndicatorsIndicators ResultResultResultResultResult

CS Call Set-up Success rate 67.8%

 Total Dropped Calls 4

Call Time between Drop (s) 1068.3 sec

 Total Cluster Retainability 90.6%

Handover Success Rate 99.8%

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content. Engineers are free to spend more time analyzing data,

troubleshooting issues, and evaluating potential tuning meas-

ures. Operating costs are reduced because network rollouts

and tuning happen more quickly and with greater efficiency.

SCANNER MEASUREMENTS

When generating a WCDMA RAN Tuning report, TEMS DeskCat

processes all scanner measurements that exist in the selected

log files. Binning methods depend on the type of output. Bins

have default sizes but can be changed by the user. For scan-

ner measurements, these outputs are produced:

• Binned MapInfo MIF file

• Tables and charts showing statistics of cluster coverage,

pilot pollution and cell coverage

• Table of potential neighbor candidates

UE MEASUREMENTS

The binning method for UE measurements is the same as bin-

ning for scanners. The output will be used to create the Map

Info MIF plot and UE pilot coverage table.

In addition to binning, TEMS DeskCat traps important events

found in the UE measurements. The results of event trapping

are displayed on MIF plots; charts and tables of KPIs; and

charts and tables of accessibility, retainability, and mobility

statistics.

For calculations of accessibility, retainability, and mobility

statistics, the user selects the logfile and UE that will be

analyzed.

•  Accessibility is measured by the number and classification

of the blocked calls

• Retainability is measured by the number and classification

of the dropped calls

• Mobility is measured by the number and classification of

the handover successes and failures

TEMS DeskCat traps approximately 18 events for the WCDMA 

RAN Tuning Reports. Here are some common events that are

identified by TEMS DeskCat:

• Call Attempt

• Call Established

• Blocked Call

• Call End

• Dropped Call

• End of Logfile

• SHO Attempt

• SHO Complete• UE Disconnected

Each event may have several subclasses, which are based on

the condition that existed when the event occurred. More than

90 event and subclass pairs are in effect. Here are examples

of subclasses for the dropped call event

•  Abnormal Change to Idle mode

•  Abnormal Disconnect

•  Abnormal RRC Connection Release

 All subclasses are mutually exclusive.

 A VALUABLE TOOL

TEMS DeskCat WCDMA RAN Tuning Reports provide a break-

down of the network KPIs and produce distinctive report docu-

ments and plots. Reports are customizable; the simple wizard

lets users select the data to include and the type of analysis

to run. The template lets users decide how the results will be

presented. And of course, data consistency and integrity is

assured.

WCDMA RAN Tuning Reports make TEMS DeskCat an even

more valuable tool for efficient post-processing, allowing

operators to make the most of their valuable time.