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N E W S L E T T E R

3 Sept 2003

No.

TEMS Investigation EDGE Helps Operators Maximize Network Performance Fast and Easy WCDMA RAN Tuning with TEMS™ DeskCat 1

4–5 TEMS™ ne ws No.3, Sept 2003 5 www.ericsson.com/tems


Make Informed Decisions with Ericsson’s TEMS™ CellSight Call Detail Record Performance Analysis

IN TODAY’S FIERCELY COMPETITIVE ENVIRONMENT, OPERATORS NEED A COMPETITIVE EDGE. SERVICE PROVIDERS ARE TRYING TO ROLL OUT SOPHISTICATED NEW SERVICES AND IMPROVE CUSTOMER SATISFACTION, ALL WHILE TRYING TO GAIN MARKET SHARE. MAKING THE RIGHT ENGINEERING AND BUSINESS DECISIONS IS CRUCIAL. BY PROVIDING END-TO-END CONTROL AND VISIBILITY INTO THE NETWORK, THE CALL DETAIL RECORD (CDR) PERFORMANCE ANALYSIS MODULE IN TEMS CELLSIGHT PROVIDES THE INFORMATION OPERATORS NEED TO MAKE PROACTIVE DECISIONS AND

By Lisa Sigler

IMPROVE THE BOTTOM LINE. ○

CDR PERFORMANCE

NETWORK OPTIMIZATION

Managing CDR information can be an overwhelming task. End-to-end system architecture involves several processes including data collection, mediation, consolidation, storage, and generation of network performance and subscriber analysis reports

• Perform Cause & Location Code analysis

The CDR Performance Analysis module in TEMS CellSight collects, processes, stores, and manages the voluminous CDR information in addition to traditional statistical data. TEMS CellSight can facilitate reporting on performance statistics and CDR performance indicators simultaneously in a single report. It provides meaningful reports that facilitate increased granularity in understanding each network and subscriber call attribute. It also performs several key network management functions such as problem identification, subscriber analysis, proactive and reactive resource management, traffic engineering, and capacity planning. Among its many benefits, the CDR Performance Analysis module helps the operator in three crucial areas: network optimization, handset-based benchmarking, and subscriber analysis.

• • • •

to identify why calls failed to connect and where the disconnections occurred Investigate problem causes in the lifecycle of a call Measure operator efficiency over time in terms of specific metrics (such as call setup time) Analyze pre-paid customers, based on outgoing and incoming routes Notify network operations personnel when the drop call level for best subscribers exceeds predefined thresholds Analyze Call statistics based on specific call types including mobile-to-mobile, mobile-to-land, land-to-mobile, or landto-land calls

TEMS CELLSIGHT HIGHLIGHTS Advanced performance management

HANDSET-BASED BENCHMARKING

• Identify problems that are often attributed

Create reports easily

to radio but are actually caused by faulty mobile phones • Compare handsets of different mobile makes over different criteria (such as call statistics, causes of call terminations, call setup times, drop rates, minutes of usage)

Monitor and analyze:

• Calling patterns, length, origination, destination, timing of calls, minutes of usage • Total calls, number of drops, drop rate, mobile manufacturer The CDR Performance Analysis module can provide basic information such as a call’s des-

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tination, when the call was made, and the length of the call. It can identify the ten subscribers with the highest minutes of usage and analyze each on a per-subscriber basis. By building a history of CDRs for a particular caller, profiles can be constructed for subscriber segments based on their individual calling patterns, days of a week, time of day, etc. – the possibilities are endless. 5

TEMS CellSight is a performance management solution from Ericsson. It continuously monitors, analyzes, trends, and extrapolates key network performance indictors and subscriber usage patterns. This data is compiled in predefined or customized reports that help operators take action to improve customer acquisition and retention.

SUBSCRIBER ANALYSIS

TEMS™ ne ws No.3, Sept 2003 5 www.ericsson.com/tems

The intuitive Windows-based interface allows scheduling and running of both predefined and customized reports. Whether simple or complex, the reports are easy to create even without any knowledge of query language. A complete solution TEMS CellSight manages data from multiple vendors and provides an end-to-end view of all sub-networks (namely the radio, switching, and packet networks). It also supports multiple technologies including CDMA, GSM, iDEN, AMPS, and TDMA. TEMS CellSight is the premiere tool for collecting, managing, and reporting data both at a system level and on a per-network-element basis.


By Jörgen Sandström

TEMS™ Investigation

EDGE

TEMS INVESTIGATION EDGE IS DESIGNED TO HELP OPERATORS MAXIMIZE THE PERFORMANCE OF THEIR EDGE NETWORKS WHILE MAINTAINING SUPERIOR GSM PERFORMANCE. ○

EDGE is making 3G a reality faster than ever before possible. EDGE is based on the GSM/ GPRS standard but uses new techniques to achieve even higher bit rates. EDGE networks also support GSM/GPRS and this makes it vital for EDGE operators to have one tool that can provide extensive, useful measurements for all these technologies. TEMS Investigation EDGE 1.0 supports GSM 850, 900, 1800, 1900, and E-GSM 900 (depending on the phone(s) connected). EDGE SUPPORT

TEMS Investigation EDGE 1.0 is based on TEMS Investigation GSM 4.0 but has new EDGE functionality and modified features to support the higher data rates of EDGE. Up to four Nokia 6200 Test Mobiles can be used to perform EDGE-specific network data measurements. See the separate table to the right for a complete list of the GPRS/EDGE measurements that can be obtained from the EDGE phone. GSM/GPRS SUPPORT

By using TEMS test phones compatible with TEMS Investigation GSM 4.0 (T68i, R520m, or T62u) it is also possible to perform full-fledged GSM and GPRS measurements. When using these phones, the GSM/

GPRS functionality in TEMS Investigation EDGE matches TEMS Investigation GSM 4.0 with the corresponding phone. DATA SERVICE TESTING

With TEMS Investigation EDGE it is possible to test data services from within the application (FTP, HTTP, and Ping), without the need of running third-party software. When testing data services, any server can be used. The server can reside on the Internet or in the EDGE network, connected to the GGSN. The latter is useful for determining the true performance of the operator’s network, since bottlenecks in the Internet will not affect the measurements. FAMILIAR ENVIRONMENT

The tool uses the same GUI (Graphical User Interface) known from other versions of TEMS Investigation, making it extremely easy for current TEMS Investigation users to start using it. The application is highly configurable to suit different needs. Measurements can be presented in several different presentation windows, including line charts, status windows, and message windows. The powerful EDGE functionality combined with superior GSM support makes this the most versatile EDGE air interface test tool on the market. 5

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GPRS/EDGE MEASUREMENTS (OBTAINED FROM THE EDGE MOBILE)

• Throughput • Attach time • C31, C32 • Coding scheme MCS 1–9 (EDGE) and CS 1–4 (GPRS): uplink/downlink

• Details on active PDP context: precedence class, delay class, peak throughput, etc.

• GMM state • GRR state • LLC window size, uplink/downlink • E-GPRS window size, uplink/downlink • PBCCH timeslot • Percentage of blocks resent on uplink (LLC, RLC)

• Percentage of blocks erroneously decoded on downlink (LLC, RLC)

• BEP • RAC • TFI • TLLI • C_Value

DATA MEASUREMENTS (OVERVIEW)

• Current • • • • • • •

uplink/downlink throughput at application level (kbit/s) Mean uplink/downlink throughput for current session at application level Bytes received/sent at application level (since dialup and during current session) Ping delay (ms) Ping size (bytes) Connection duration Session duration IP address assigned to RAS client

TEMS™ ne ws No.3, Sept 2003 5 www.ericsson.com/tems


By Anne Decker

Fast and Easy WCDMA RAN Tuning with TEMS™ DeskCat ○

WCDMA RAN TUNING REPORTS IN TEMS DESKCAT 5.1 ALLOW NETWORK ENGINEERS TO QUICKLY AND EASILY ASSESS THE RADIO ACCESS NETWORK (RAN) PERFORMANCE OF THEIR WCDMA NETWORKS. ○

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 Report 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.

Cluster Level Key Performance Indicators Result 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%

Table 1 Drop Call Details

34%

18%

4%

5%

2%

13%

3%

TEMS™ ne ws No.3, Sept 2003 5 www.ericsson.com/tems

GENERATE REPORTS EASILY

The new WCDMA RAN Tuning reports in TEMS DeskCat consist of a wide range of charts and tables for both scanner and User Equipment (UE) data that is collected by TEMS Investigation WCDMA. Reports containing charts and text are generated in Microsoft® Word format. Plots are produced in MIF format that can be imported into MapInfo®. DL Coverage DL Interference High DL BLER High TX Power

Network Commanded Releases_DL Coverage

Network Commanded Releases_Not Classified No Date Not Classified

Figure 1

Managers and Marketing Teams: WCDMA RAN Tuning report 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 marketing teams who want a high-level view of network performance. See Table 1 for an example of cluster-level information.

Network Commanded Releases_High UL TX Power

1%

Engineers: Detailed call classification charts and tables provide valuable information to engineers who are responsible for identifying and correcting network deficiencies. A chart showing dropped call details, for example, would be meaningful to these users. Figure 1 is an example.

High UL TX Power & DL BLER

8%

1%

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 thresholds 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 gener-

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ate the content. Engineers are free to spend more time analyzing data, troubleshooting issues, and evaluating potential tuning measures. 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 scanner 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 binning 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


NEW FEATURES STRENGTHEN TEMS™ INVESTIGATION GSM The latest version of the industryleading air interface test tool boasts a number of useful features, including multiple command sequences, inbuilding positioning, and Key Performance Indicators (KPIs). TEMS Investigation GSM 4.1 builds on the functionality of previous versions and adds a number of useful features to further enhance functionality and ease of use. KPIs KPIs are a set of industry-standard statistics describing network performance. TEMS Investigation GSM provides KPIs for GPRS, including GPRS mean data rate and GPRS attach setup time. Measuring KPIs allows impartial comparison of different networks.

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

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.

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

A VALUABLE TOOL

TEMS DeskCat WCDMA RAN Tuning Reports provide a breakdown of the network KPIs and produce distinctive report documents 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. 5

GPS interpolation If GPS coverage is temporarily lost, the missing route segment is recreated as a straight line. Accumulated measurements are then distributed along this line according to their time stamps. Multiple command sequences Several command sequences (each assigned to a different mobile) can now be run simultaneously. In-building positioning When performing in-building measurements it is possible to position data by indicating the coordinates in a map window by using a pointing device. Data testing: e-mail E-mail testing has been added to the list of supported data measurements. The application handles both sending and receiving, and attachments are allowed. Improved online help The online help has been expanded with a comprehensive index and full-text search, making it easier than ever to find useful information quickly. This powerful tool, already the industry leader, is now better than ever. 5

By Jörgen Sandström

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TEMS™ ne ws No.3, Sept 2003 5 www.ericsson.com/tems


Expertise and Research Keep Ericsson Ericsson’s TEMS group is committed to being on the cutting edge of technological advancements. The pre-eminence of the TEMS portfolio in the market is driven by research, cooperation, and participation in the global telecommunications community. Through the expertise and hard work of the people within the organization, TEMS has become an acknowledged leader in the field, particularly in the area of speech quality measurements. One way we demonstrate this leadership is through our participation in the International Telecommunication Union (ITU). This is an international organization within the United Nations System that meets to coordinate global telecom networks and services. TEMS currently participates in a study group within

the ITU’s Telecom Standardization (ITU-T) branch, investigating Quality of Service for end-to-end communications with a focus on objective Speech Quality evaluations.

Dr. Cotanis participates in this particular subgroup because of her expertise as well as our portfolio’s background as leaders in the Speech Quality area.

We are represented in the ITU-T by Dr. Irina Cotanis, a principal engineer whose extensive background in both theoretical and practical aspects of telecommunications makes her the perfect choice to represent TEMS in the ITU. Dr. Cotanis holds a Master’s Degree in Electrical Engineering and a Ph.D. in Wireless Communication.

Currently, the ITU-T is driving an improvement process for speech quality metrics throughout the industry. Being a part of this study group gives us a voice in how the new standards are developed and implemented. The new standards will improve the correlation between the objective standards and the subjective experiences of subscribers. This will make speech quality measurements more useful to operators than ever.

She spent seven years as a lecturer and professor on the principles of mobile communications. She then worked as a researcher in various aspects of wireless telephony before making the move to Ericsson TEMS in 1998.

While our involvement in the ITU demonstrates our leadership in the global market, our ability to contribute at that level is a di-

By Lisa Sigler

A New View of TEMS™ Investigation CDMA ○

THE INDUSTRY-STANDARD REAL-TIME DIAGNOSTICS TOOL DISPLAYS COLLECTED DATA IN A SERIES OF VIEWS. ○

TEMS Investigation CDMA can simultaneously collect data, scanner, and air interface measurements from up to four phones (including one configured as a modem), a DTI scanner, and a navigation device. This generates huge amounts of information that can be used to pinpoint, identify, and correct network problems. The challenge of presenting all this raw data in a useful, logical way has been met in a series of organized Views. The tool uses over 40 pre-defined views, many of which can be configured using filters, adjustable thresholds, and sorting features. In addition, Custom Views are also available to facilitate in-depth analyses. Together, these Views display data testing analysis, radio link layer measurements, air

TEMS™ ne ws No.3, Sept 2003 5 www.ericsson.com/tems

interface parameters, and network conditions discovered through PN scanning. The following charts detail some of the many Views and what they depict.

New features in the 2.2 release include:

The extensive Views in TEMS Investigation CDMA give network operators a clear look at network performance and trouble areas. The Views are just one reason that TEMS Investigation CDMA is the best real-time diagnostic tool for CDMA networks.

• New CDMA2000 Views

TEMS INVESTIGATION CDMA 2.2

• TEMS Investigation CDMA can connect ®

With support for data testing, CDMA2000 , cdmaOne, and PN scanning, TEMS Investigation CDMA is the ideal tool for ensuring that engineers build efficient networks and optimize the performance of existing ones.

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• Support for the Spectrum Analyzer function in DTI scanners

• TEMS and MDM data files can be merged and replayed as a single file to the Hubport™ Power-Managed USB Hub and collect data from phones that use USB cables

• Files can be converted from TEMS format

to text or comma-delimited file format. 5


TEMS™ Ahead

EXPERTS WITHIN OUR ORGANIZATION CONTRIBUTE TO OUR LEADERSHIP IN AREAS INCLUDING SPEECH QUALITY. ○

rect result of our research and development efforts. In addition to TEMS development teams constantly working to improve and advance our products, TEMS works with research specialists from other groups within Ericsson. One of those specialists is Gunnar Heikkilä, Manager of Radio Network Performance within the Wireless Access Network Research area. Holding a Master of Science in Computer Science and Technology, he worked with defense radar systems and then network multiplexing systems before joining the research side in his current position.

launched. Another feature, currently in use in TEMS Investigation, is an advanced method for troubleshooting that includes measuring frequency interference and pinpointing interfering base stations.

Innovations from Heikkilä’s research team include a GPRS prediction algorithm that allows GSM operators to see how GPRS calls will be handled even before the service is

SQI predicts the speech quality based on all available radio information, but does not require that any special speech samples are sent or received. This reduces the complexity of the

Like Dr. Cotanis’ participation in the ITU-T, our relationship with Heikkilä’s group contributes to our leadership in the area of Speech Quality. In fact, it was his group that developed the Speech Quality Index algorithm (SQI) currently implemented in TEMS Investigation, TEMS Automatic, and TEMS Benchmarker, as well as the Ericsson GSM system.

infrastructure needed and does not disturb the call, allowing the system-side implementation to measure speech quality for all calls. In addition to their contributions to the TEMS products, Ericsson researchers play a vital role in the future of telecommunications. As Heikkilä noted, “It is vital that Ericsson has the knowledge and the possibility to affect the future of the telecom world, partly of course in terms of our own products, but also in terms of influencing future standards and regulations.” With our involvement in the ITU, our continuing dedication to research, and the expertise of our employees, Ericsson’s TEMS portfolio is poised to continue to be global leaders in Speech Quality and all other areas of network optimization.5

By Lisa Sigler

TEMS Investigation CDMA Data Testing Views View Data Testing Measurements Application Throughput Application-level uplink and downlink throughput Action Summary Details Trace Route Details IP address and delay of each router from the start to the destination RAS Connection Remote access service (RAS) connection information, such as the IP Information RAS Link address, access time, duration, bytes and frames sent/received, Statistics throughput, errors Ping Response Ping number, status (success or failure), and round trip delay Radio Link Layer Views View Radio Link Layer Measurement MUX Statistics Rates of forward/reverse fundamental and supplemental channels RLP Throughput Radio link protocol (RLP) transmit/receive rates RLP RX/TX Frames Maximum data transmit/receive rates allocated to each frame on the Information physical layer for the fundamental, dedicated control, and supplemental channels Air Interface Testing Views View Network Condition IS2000 Power Control Blocked and dropped calls; forward and reverse power levels for fundamental, dedicated common control, and supplemental traffic channels; plots measurements of total power, reverse power, decision history, and set points. Handoff Text Handoffs getting triggered at the wrong Ec/Io level; the view lists sectors moving in and out of handoff condition; for example, when Handoffs are getting triggered at the wrong Ec/Io level Ping Pong History Lists PNs, time and location the mobile was dropped and added, and the distance between the two positions Island Areas service Poor coverage and dropped calls; lists the location of each island and its active PN and finger sum; lists the PN and Ec/Io of the sectors that are trying to provide CDMA Temporal Analysis Multi-path problems; plots the Ec/Io of PNs in the active, candidate, and neighbor sets plus the time offset in chips. PN Scanning View Polluter Missing Neighbor Pilot Channel Scan

Network Condition Poor coverage or interference; polluters are listed by PN, site name, and Ec/Io. In cases of Narrow Band Interference, it shows the signal strength of upper guard, lower guard, in band channels. Identifies the interferer Dropped handoffs or handoffs not being made; shows PNs that are missing from the neighbor list, identified by PN, site name, and Ec/Io. Poor signal strength; shows the PN, Ec/Io, Ec, Aggregate Ec/Io, PN Delay, and Delay Spread of a set of pilots. For Spectrum Analysis it shows the signal strength of a frequency range, and for Traffic Occupancy Analysis it graphs the traffic channels in use.

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TEMS™ ne ws No.3, Sept 2003 5 www.ericsson.com/tems


Ericsson’s TEMS portfolio leads the world in helping wireless operators plan, optimize, and expand their networks. We here in the TEMS group are dedicated to being leaders and innovators in the field of wireless telecommunications. For example, this issue of TEMS News features an article on TEMS Investigation EDGE, our first-to-market air interface testing tool. We also highlight two of the people who have played a huge role in establishing TEMS as leaders in Speech Quality. We maintain our position of leadership by continuously updating and improving our products according to feedback from our customers. This ensures that we are meeting their needs. In the same way, I encourage you, the readers of TEMS News, to let me know how we can meet your needs.

Our goal is to be the most complete source of updated information about the TEMS portfolio. We try to provide a mix of product and industry articles that cover all of the regions and technologies our customers care about. If you have an idea or a suggestion about how we can do that more effectively, I’d love to hear about it.

Upcoming Event The TEMS portfolio will be represented at this upcoming event: 2003 CDMA Americas Congress Where: Miami Convention Center, Miami, FL When: December 8-10, 2003 Type: Speaking Engagement

New Releases! » » » » »

Lisa Sigler, Managing Editor lisa.sigler@ericsson.com

TEMS TEMS TEMS TEMS TEMS

Automatic 3.0 Investigation WCDMA 2.0 DeskCat 5.1 Investigation CDMA 2.2 Investigation EDGE 1.0

To subscribe to TEMS News, visit our web site at www.ericsson.com/tems and click on the TEMS News banner!

TEMS™ – Making Wireless Better The Most Complete Product Portfolio TEMS™ News is a quarterly newsletter covering the Ericsson TEMS™ Optimization Solutions.

TEMS Optimization Solutions provides the largest and most comprehensive product portfolio in the marketplace. Realtime Diagnostics » TEMS Investigation » TEMS Light » TEMS Indoor » TEMS Transmitter » TEMS Pocket » TEMS DeskCat » TEMS DriveTester

Publisher: Lorraine Cumello Phone: +1 (571)203-4675 E-mail: lorraine.cumello@ericsson.com Managing Editor: Lisa Sigler Phone: +1 (571)203-4862 E-mail: lisa.sigler@ericsson.com Graphic Design: Monica Granlund Print: Västerbottens Tryckeri AB, Sweden

Autonomous Network Monitoring » TEMS Automatic

»

Network Performance Management » TEMS CellSight

» »

TEMS™ ne ws No.3, Sept 2003 5 www.ericsson.com/tems

Benchmarking TEMS Benchmarker

TEMS is a trademark of Telefonaktiebolaget L M Ericsson.

© Ericsson AB 2003. All rights reserved. Network Planning TEMS CellPlanner TEMS LinkPlanner

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For the most recent contact information for your region, please visit us at www.ericsson.com/tems and click on TEMS Worldwide.


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