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UMTS: the challenge

Over the past half-decade, the rapid ex-

pansion of broadband services based on

3G architectures has caused an incred-

ible surge in the complexity of wireless

networks. A key part of this complexity

lies in the fact that operators must sup-

port legacy voice services while at the

same time provide bandwidth-intensive

data services in a mixed 2G/3G environ-

ment.

This new breed of data service requires

a far more robust and flexible network

than simple circuit switching technology

permits. For example, content provided

by these services needs to be timely,

topical and customized to the needs

of the user. Customers also demand

always-on data connections no mat-

ter where they are located. To provide

these services, carrier networks must

migrate from voice-optimized archi-

tectures to data-optimized, packet-

switched architectures while maintain-

SUNRISE TELECOM

TAMS - UMTSTraffic analysis & monitoring system for UMTS networks

Application Note

ing a high quality of experience.

These services also require deployment

of modern Network Elements (such as

RNCs, Node-Bs)… each of them po-

tential sources of problems due to the

implementation of new protocols and

procedures.

In such a migration, deployment of a

Network Monitoring System (NMS) is a

must. The NMS maximizes the ROI on

3G networks by ensuring more cost-ef-

fective and efficient test access and

service, and at the same time reduces

operational costs through sharing of the

analysis among multiple users. Further,

as interworking issues between the new

Network Elements and the legacy equip-

ment are very difficult to troubleshoot,

the NMS is a mandatory tool to test the

network during the trial and production

stages.Powerful, customized traf-

fic analysis and monitoring

system for multi-protocol

environments

TAMS Architecture

2 Traff ic analys is and monitor ing system for UMTS

The Sunrise Telecom Solution

TAMS UMTS (Traffic Analysis and Monitoring System for

UMTS) is a scalable troubleshooting and service assurance

tool that consists of one or more Data Collector Servers

(DCS), coupled with a set of Probes that provide local in-

terfaces to the links carrying signaling at various interfaces

throughout the network. TAMS integrates all capabilities

for network troubleshooting and service monitoring in a

single platform that shows network faults, traffic statis-

tics, and provides tools for problem isolation, analysis and

resolution.

TAMS was designed to:

• Continuously monitor the state of the signaling network

• Locate the causes of the abnormal conditions through

troubleshooting operations

• Evaluate the quality of the network and its proper con-

figuration

• Generate detailed reports about network usage and

quality of the provisioned services

TAMS UMTS: concepts and results

TAMS continuously collects two kinds of detailed informa-

tion from the Probes: Call Detail Records (CDRs) and Protocol

Messages.

• CDRs are generated by the probes for all monitored trans-

actions (including unsuccessful ones) and are stored in a

powerful Oracle® database.

• Protocol Messages are stored in a high performance file

system for off-line troubleshooting and CDR drill down

analysis.

Call Details Records Searching & Analysis

The database can be queried to show how the CDRs relate

to all calls matching specific criteria such as:

• Call date and time

• Called/Calling numbers

• IMEI

• IMSI

• RNC ID

• PDP Address

• APN

• Local Area Identifier

• Routing Area Identifier

• Disconnection Cause

Call Details Records Drill-down

All protocol messages related to a specific call can be

displayed easily and the user can view the diagram showing

the calls progress through the network being monitored. Multi Protocol Correlated Trace

TAMS can correlate different protocols (i.e.: Iub and Iu CS/

PS) to provide a unified view of the entire call using ladder

diagrams, regardless of the different technologies involved.

Traffic Analysis

The storage of the CDRs onto the local database is a valu-

able source of information. Depending on the customer’s

requirement, the system provides reports and statistics

about traffic behavior such as Call Completion and Discon-

nection Cause analysis. The system can be easily customized

to meet specific network requirements.

Trends Analysis

TAMS shows the behavior of specific measurements over time.

Key measurements are available in a standard report, while a

flexible statistical engine (based on SQL) allows customization

for other types of analysis.

Calls summary

System status can be checked via the web

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Reports Scheduler

All the reports can be automatically programmed to be

generated daily, weekly or monthly.

Off-line Analysis over Recorded Data

TAMS allows off-line protocol analysis, including searching

and filtering over months of data to perform troubleshoot-

ing for problems that occurred in the past.

TAMS UMTS: Applications

Here are some examples of traditional TAMS applications:

• End-to-end call trace

• Statistical reports about disconnection causes and their

locations

• Statistical reports about the number of calls, by type (PS

calls and CS)

• Statistical reports about the services being used

• ACD (Average Call Duration) analysis

• Researches on customer and traffic behavior

• Detection of the problems on the specific RNCs

• Throughput rates on PS

• LAC update detect

• Testing of handoff procedures

TAMS for System Integrators

TAMS is the ideal platform for System Integrators that

must gather data from the signaling network and integrate

Protocol Analysis functions into their applications.

Besides the CDRs that are stored on the Oracle® database

(which are accessible through standard methods like ODBC),

it is possible to access raw protocol messages by means of

documented APIs based on CORBA standard. For example,

the API allows the following operations:

• Login/logoff a user to the Server

• Activate/deactivate a protocol analysis session

• Browse captured data to obtain raw messages

• Activate/deactivate a call trace session

• Browse frames belonging to a specific CDR stored into

the database

Correlated trace - red boxes contain deciphered messages

© 2006 Sunrise Telecom Incorporated. All rights reserved. Specifications subject to change without notice. All product and company names are trademarks of their respective corporations.

Sunrise Telecom San Jose, Modena, and Taiwan facilities are ISO 9001 certified. Do not reproduce, redistribute, or repost without written permission from Sunrise Telecom. REV.200 Dec. 2007

For more information or a directory of sales offices: pre-sales.support@sunrisetelecom.it www.sunrisetelecom.com

Measurements

Disconnection Causes

• Iu CS: Call Control, Release Cause, Mobility Management,

RANAP

• Iu PS: Session Management, GPRS Mobility Management,

RANAP, Release Cause

• Iub Radio Resource Control

• Iu CS/PS: Causes Location by SAI, Causes Location by

RNC, Causes Location by LAI, Causes Location by RAI

Traffic Summary

• Total Calls: by CS/PS, by CDR type

QoS Classes Statistics

• Summary of Calls: by QoS type, by QoS type & IMSI/IMEI

IP Traffic

• Throughput, Average Session Duration, Average Session

Duration by IMSI/IMEI

Procedures Statistics

• Location Area Update, Routing Area Update

Other Statistics

• IMEI activity summary (included dropped calls/sessions)

• IMSI activity summary (included dropped calls/sessions)

• Worst cells for PS sessions, worst cells for CS calls

Supported protocols

• Iu CS/PS

• Iub

• Iur

Physical interfaces

• Ethernet, Fast Ethernet, GigaEthernet on electrical inter-

faces

• GigaEthernet on optical interfaces

• ATM on E1/T1/OC3/STM-1 interfaces

• E1/T1

Ordering information

Please contact your local Distributor or Sales Representa-

tive for more information.

Tams at-a-glance

PlatformRack Mount

Hot-swappable Hard Disks

RAID Technology

Redundant Power Supplies

Extreme Scalability

Oracle® Database

Linux O.S.

Windows O.S.

ManagementWeb Interface

Multi-user

Protected Access

TroubleshootingReal Time Network Call Trace

Historical Sessions Analysis

CDRs Drill-down

Protocol Analysis

Multi-protocol Correlation

Ladder Diagrams

Off-line Analysis

SurveillanceTraffic Alarms

Signaling Links Outage Detection

Network Maps

Key Performance IndicatorsTraffic Statistics

Trends Analysis

Voice Quality Scoring

Aggregation by Destinations

ReportingReport Scheduler

Warnings on Thresholds Violation

Microsoft Excel Compatible

HTML

CSV

PDF

Compatibility with 3rd-party ApplicationsBusiness Intelligence Tools

Data Backup and Restore

Fraud Management

Revenue Assurance