OptiMon Detailed Presentation

OptiMon Detailed Presentation

2

2 leading brands (Sales ~$2.4B)

Tektronix > $1B

Market Leaders to Broad Spectrum of End Users:

– From the R&D engineer to the service, installation and maintenance professional

– From the network/telecom manager to the cable installer

Danaher Test and Measurement Platform

Tektronix is part of

Environmental Hand Tools Motion

Test &

Measurement Medical Product ID

Trusted Brand

Innovative Technology

Global Customer Reach

Financial Health

Exceptional People Core Strengths

3

Tektronix Communications Markets and Products

Functional & Load Test

Wireless Field Test

Stationary/Passive Monitoring

Network Diagnostics

Network Management

Tektronix Communications Markets Served

Communications Business Sectors Focus on High Growth Areas

Triple Play PSTN Wireless Broadband

2.5G, GPRS

3G, UMTS,

UTRAN, TD-SCDMA

3G+, WiMax,

LTE/UWB, UMA

Voice over IP

Video over IP

Legacy GSM &

SS7

IMS

Fixed Mobile Convergence

Data over IP

Market Drivers

Wireless anytime, anywhere IP-ization

Network Optimi-zation

Portable Monitoring

OptiMon’s focus = Optimization of 2G/3G Radio Networks and Services

4

Tektronix Communications

Unique Business Portfolio

Communications Customer Type

Network Performance/ Optimization

• Functional Test

• Load Test

• Functional Test

• Load Test

• Portable Monitoring


• Stationary Monitoring • Stationary Monitoring


Network Diagnostics

Network Management

Product Lines

NEM Operator

Lab Pilot,

Deployment Deployment, Operation

& Optimization

Voice

Video

Data

4G/LTE

Mobile TV

Pico Femto

WiMax

IMS

HSDPA

Business VoIP

3G

2.5G/ EDGE

Consumer VoIP

MIMO

UMTS R7

UMA

Mobile VoIP

IPTV

HSUPA

Local Operations

Network Operations

Network Operations

Local Operations

Business Operations

5

Network Management + OptiMon are complementary solutions

Tektronix Monitoring Solutions

OptiMon / NSA

Network Optimization + Trouble Shooting

Nwk Management

Network wide 24x7 Monitoring

OptiMon adds:

1000’s of radio KPIs

User Plane KPIs

Flexible KPIs

HSPA performance

Radio / Services correlation

Deep troubleshooting

6

Positioning of OptiMon in the Tektronix Portfolio

Broad set of interfaces

Support all relevant protocols

Integration with Network Management

Open interfaces for drive tests, counters, …

Monitor It (K15/K18)

Analyze It (NSA)

Optimize It (OptiMon)

Populated in real time via auto configuration

Intuitive and flexible GUI

Network + service level KPIs, voice & data

Applications: from entry level to expert level

Frame-, Call-, Cell-, Domain Level

Contextual drill down capabilities

Correlation of different KPIs

Consulting and support services

7

Objectives of Radio Network Optimization

• OptiMon: Summary and Key Benefits

• Optimizations Activities: Definitions

• Optimization Challenges

8

RAN Optimization

OptiMon Summary

Goal of OptiMon................ Improving the performance,

– of the Radio Network (QoS)

– and the mobile services (QoE)

… and make sure that it remains optimized

While................................. Cutting the costs of the Network Engineering

– by reducing Drive Test

– by improving the problem assessment process

Who should use OptiMon... Optimization departments + Professional Services

– Operators’ optimization teams

– Manufacturers’ professional services

Organizations involved....... Optimization dept.,

– doing the RAN Optimization in two steps, known as Level 1 and Level 2

Operations dept., – doing the RAN monitoring and troubleshooting.

Key values of OptiMon…... based on the analysis of the CP and UP data from all the subscribers

– Independent from Network Equipment vendors – not all NE issues are triggering OMC alarms (sleeping cells…)

– not all vendors communicate the exact definition of their KPIs

– Streamlined suite of tools (all compatible) – Can share information between departments

– Aggregates data from different sources (DT, CP/UP data, NM system)

– Scalable architecture: – can add more processing units when the traffic increases

9

RAN Optimization

OptiMon Key Benefits

No Need to permanently watch – Automatic alarming

Geographical localization of problems

Automatic reporting – Provides performance indicators in user-defined reports

Instant and seamless drill-down – From KPIs to call and message details (radio charts, frame protocol decoding)

Reduce the need for drive testing – In-depth radio analysis combined with geographic position

– Statistically relevant results

Improve QoE – By identifying degradations early

Future proof – Scalable

– IP-RAN available today

– LTE leadership

10

RAN Optimization

Level 1 & 2 optimization activities: Definitions [1/4]

Performance monitoring and troubleshooting:

– “QoS monitoring and troubleshooting” (Operations department).

– Centered mainly on fixing NE hardware or software failures to restore

service.

Level 1 optimization:

– “radio network” or “cluster” optimization.

– It consists of radio network dimensioning, planning and verification

– analysis, prediction and optimization of uplink/downlink capacity

Level 2 optimization:

– “End to End” optimization.

– Focused on analyzing and improving end customer perceived quality

– User Plane level

– application level such as ICMP, WAP, HTTP, FTP, Video Streaming, voice

and video quality

11

RAN Optimization

Optimization activities: Definitions [2/4]

“Performance monitoring and

troubleshooting” typical day to

day tasks:

– Generation and analysis of

worst cell list per KPI type on a

daily basis:

– call drop rate, call setup failure

rate, SHO failures…

– congestion (radio interface,

transmission links, spreading

codes)

– hardware resources shortage

(nodeB channel cards,

RNC/SGSN GTP unit…)

– Root cause analysis

– discrimination between

network elements

– Analysis on a call basis

– using call trace capabilities

Tools used:

– OSS counters

– Alarms

– Drive-tests

– Network monitoring solutions

Parameters:

– no parameters are modified /

optimized directly at this stage

12

RAN Optimization


“Level 1 optimization” typical

day to day tasks:

– Drive test monitoring

– Pilot pollution improvement

– Detection of external interferers

– Identification of holes in radio

coverage

– Detection of missing

neighbours

– Neighbour cell list optimisation:

– deleting un-needed relations

– tuning handover parameters

– improving average “Active Set

Size per Cell”

Tools used:

– radio planning tool,

– drive-test campaigns,

– OSS counters,

– protocol analysers (call trace

capabilities, uplink and

downlink measurements)

Parameters:

– handover settings,

– Pilot Channel Power,

– Maximum Power per User,

– Common Channel Powers…

13

RAN Optimization


“Level 2 optimization” typical

day to day tasks:

– Voice quality issues

– Video call quality issues

– pixelisation issues, audio/video

de-synchronisation

– correlation between video

issues and radio parameters

– Video streaming performance

improvement

– Call setup time improvement

– Service access time optimisation

(WAP portal)

– HTTP page download time

optimisation

– End-to-End throughput

improvement (RLC/MAC,

TCP/IP, ftp layers config)

Tools used:

– protocol analysers

(extended captured

interfaces, user plane

included)

Parameters:

– RLC and TCP parameters,

call admission,

measurement power

offset…

14

RAN Optimization

Optimization Challenges [1/2]

The need for UTRAN parameters optimization (Level2) is much more

important compared to the 2G

– Due to the complexity of the UTRAN technology

– and 3G pushing the resource management to the access network

More time must be spent on L2 optimization while the other tasks are

not disappearing.

As a consequence, operation organizations are overloaded and don’t

address proactively L2, the most challenging task.

Work Load (Base 100 in 2G)

Domain

Radio Planning

Perf Mngmt

NE issues

L1 Opt L2 Opt Total

2G 30 20 25 20 5 100

3G 30 20 25 20 10 105

3G+ 30 20 25 20 20 115

15

RAN Optimization

Optimization Challenges [2/2]

The number of trouble tickets resulting from a lack of L2 optimization

is significantly growing, representing at least 50% of the 3G+

customer complaints

# of Troubletickets (Base 100 in 2G) Domain NE

issues L1 Opt L2 Opt Total

2G 50 50 0 100

3G moderate traffic 50 50 30 130

3G high traffic 50 50 50 150

3G+ 50 50 100 200

Without proactively addressing L2 issues, operators take the risk to…

– Have increasing customer satisfaction issues

– Lose market share to the competition

– Waste radio resources

– Over invest in radio network due to poor efficiency

16

RAN Optimization

The bandwidth race is not over

With HSPA evolving to Ultra High Speed in 2008, the L2 optimization

will become vital

(source: Ericsson)

17

Optimization Tools at Mobile Network Operators

NE Counters / OSS Systems

Drive Test Analysis Platforms

Probe-Based Optimization Solutions

18

Optimization Tools

Network Element Counters / OSS

MSC-S

Advantages Disadvantages

Inexpensive

Statistical relevance of data

Network-wide aggregated possible

No drill-down to individual calls

Counter definitions not transparent and subject to change

Performance burden on network elements

Results are often “colored” (DUT-generated measurements)

Min. granularity is 15 minutes

Lagging behind new technologies

19

Optimization Tools

Drive Test


Ease of deployment: No need to access network infrastructure

Data are geographically referenced

Information on Uu interface

Direct control over placed calls

Assess user experience

Possible to perform competitive benchmarking

No access to in-door locations where most traffic is generated

Monitors only one interface – Uu

Not statistically relevant

No visibility on UL

Only one…four mobile types

Very expensive

20


Statistical relevance of data

Monitors large geographical areas

Covers multiple different interfaces

Once installed, little resource and time demanding

Geographical localization of problems

No control over how calls are placed

Limited visibility on Uu interface

Optimization Tools

Probe-Based Optimization Solutions

21

OptiMon Network Optimization Suite

Needed functionality and tools

Easy to configure (e.g. automated topology detection)

Un-attended operation of tools

Automated issue detection & reporting

– KPI violations

– Sleeping Cells

– Ping-pong handovers

– Pilot pollution

Geographical mapping of problems/potential issues

Drill down from high level to details

Drive Test and OSS counter correlation

22

Introduction to OptiMon

23

Root Cause Analysis Phase

Investigation and Discovery Phase

UTRAN Optimization

3G Optimization Processes and Tools

Trouble Ticket Alarm KPI Violation Audit Scheduled Optimization Campaign

Data Indicators

OSS & NE Stats Drive Test Network Management (Unified Assurance) Protocol Analysis (NSA / TrendNavigate)

Step 2: Identify Affected Areas

Is the problem a location, handset type, service etc?

Step 3: Identify Root Cause Is the problem Core or RAN? What is the cause?

Step 1: Quantify Problem Is this a systematic issue or a one-off?

24

Iub

Bridging the Gap

Drive Test

RF Analysis

OMC/OSS Counters

Service & Network Analysis

OptiMon

Combined Analysis

OptiMon bridges the gap between Network Management and RF Performance

OptiMon obtains data from Iub/Iu/Iur links

OptiMon provides independent RF, Service and Subscriber analysis

25

OptiMon Network Optimization Suite

User Benefits

Independent benchmark – Establish baseline values

– Compare benchmarks before and after events

– Recognize trends and changes

Google-Earth approach to network analysis – Focus on most important indicators

– Provides entry point and drill-down for Troubleshooting or Optimization

Superior Radio Analysis – Call and cell level analysis

Several Possible Use Models – Stationary: permanently optimize a Cluster of NodeBs

– The OptiMon systems monitors a subset of an RNC

– Possible “radar mode”: regularly switching the Iub links / clusters

– Itinerant: campaign based optimization (Audit, problem solving) – The OptiMon system is moved on demand on several RNC sites

– Mixed (a.k.a. “Golden Cluster” approach)

26

Tektronix Optimization Platform

Drive Test Analysis

Single Call Analysis

Root Cause Analysis

Dashboards

Network Analysis

Data Integration

Independent benchmarks Trending Dashboards Seamless drill-down to calls GIS maps

Superior single call analysis Radio charts

Aggregation server and central data base

MSC-S

Protocol Capturing and Processing

NS

A

Iu CS/PS Iub

Drive Test system

TrendNavigate

27

Applications (e.g. TrendNavigate)

MSC Server

GMSC Server

UT

RA

N

Iub, Iu

r, I

uPS, Iu

CS

RNC

MSC

SGSN

BSC

GE

RA

N

Gb, A, G

r, D

, G

n, G

SM

Abis

MGW

MGW

CO

RE

M

c, N

c, I

SU

P

Storage

Capture

Analysis

Convert Decode

Reassembly Analyse

Open DB

View Results from Database

Single or multiple acquisition probes

NSA Architecture: Stream Store Analyze

Raw Data

CDR

KPIs

28

Processing Unit: Concept and System Architecture

Based on NSA (Network Service Analyzer)

– Stream-Store-Analyze Architecture

– Automatic Network Topology discovery

– Fully Automatic Configuration

– Multi-vendor compatible (Iub)

– Customizable KPI engine

Interface Probes

– STM-1, E1, GbE probes (K18)

– Filtering at full line rate

– Streaming up to 400 Mbps

Rack-mounted

– NSA server

– Probes

– GbE Switch

– Power switch

– …

29

Network Optimization and Performance Monitoring Suite

1. NSA + KPI module

– Data acquisition up to 400Mb/s

– KPI analysis

2. TrendNavigate

– Scalable, independent analysis of

network and service performance

– Network based RF and performance

analysis

– High level trending analysis with

seamless root-cause analysis

3. DT-Synergy

– Drive Test Correlation Module

– Call correlation:

Drive Test NSA data

– Analyze Protocol signalling,

Radio KPIs,

and DT KPIs concurrently

4. Call Trace Analysis

– Part of TrendNavigate

– Call table

– Message Sequence Chart

PAS (KPI)

Database Queries

Trend Navigate

DT- Synergy

NSA

Drive Test system

30

Summary of Functions

Assess network performance at a glance – Aggregation of data from multiple RNCs, multiple sessions,

over days, weeks and months

GeoLocalization – Identify spot with – Visualize worst cells, areas and handsets – Map worst cells to geographic map (GoogleMap) – In the next release it will also position the events on a map

User Plane QoE Analysis

Trend & Comparison Analysis: – Dashboards display trends over time – Identify even minor performance degradations by analyzing trends

over time – Compare performance/quality of different SW builds

Direct drill-down: – Narrow down root causes to areas, cells,

services, handsets and individual calls

Top Cell and Cause Value Reports – Indicate the top worst cells, areas or handsets – Cause value distribution

Reporting – Automatic reporting and alarming – customizable

31

Key-enabler for drive test reduction

OptiMon Geo-Localization

Zoom into details

Seamless drill-down

32

Reference Cell

Best Server Areas of

Reference Cell

800m

Use Case:

GeoLocalization: coverage analysis

“Even though the cell spacing

is very dense, significant

coverage spots reach out

>1000m“

2nd Best Server Areas of

Reference Cell

Predicted cell coverage using advanced

Ray-Tracing Model and 3D building maps

Areas served by

the sector outside

of intended

coverage

33

Use Case:

Geo-localization of problems

Area with high

number of call

drops

240m

34

Use Case:

Geo-localization of network problems

240m

Drill-Down:

Dropped calls

were served

from far away

cell

“The drill-down

capabilities of OptiMon

were essential to

understand the root-

cause of the problem. “

35

Use Case:


0 600 1200 1800 2400 30000

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

Reported PD (m)

Pro

bab

ilit

y

0 600 1200 1800 2400 30000

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

Reported PD (m)

Pro

bab

ilit

y

240m

Analysis for Reference Cell:

Cell spacing: 300…400m

Call setup distance: approx. 11% of call setups occur from >/= 600m (and 4% >/= 1000m)

Distance between sites is not a good indicator

for the actual cell coverage area

QoE problems occur most likely in coverage

spots far away from sites

36

Use Case:


Recommended actions:

1. Consider tilting down antenna of cell A

– Check for canyon effect due to long straight

road with buildings

2. Verify that cell B and C are in the neighbor

list of cell A

A

B

C

“In this case, a significant quality

improvement was achieved without

any drive test.“

Dramatically reduced MTTR

Substantial OPEX Savings

37

Geolocation of Radio Events

Handover to 2G

IRAT Measurement Reports

– Inter-frequency (2D; [RSCP</=112dBm])

– Intra-frequency (1B, 1C, 1D)

Pilot Pollution

RAN Accessability Failures

RAN Call Drops

– Circuit Switched

– Packet Switched

RRC Failures

– Radio Link Failures

– Unrecoverable Errors

38

Aggregation and Trending: Dashboards with Drill-down

Drill-down to KPI details

List of 20 most impacted Cells

Detailed Cause break-down

39

Map KPIs to GIS Data

Show the position of the cells on a MAP, with an indication of the KPI

values

It supports MapInfo and Google Map as background

GIS KPI Mapping

Map individual KPIs to

geographical overview

Easy hot spot identification

Color behavior can be

changed individually for

problems, load etc.

40

Narrow down the potential root causes

Types of handset

Home PLMN of Roamer

Ranking of the KPI results per

– Top Cells

– Top Handset Types

– Top Roamers

41

Drill-Down: Call Details

Call Table

Message Sequence

Call Details and Decoding

Radio Charts

42

Radio Measurement Charts

– Radio Quality Parameters extracted from RRC/NBAP Measurement

Reports and FP CTRL messages

– User Plane QoS KPIs

– Selected Signaling Events (RRC and NBAP) at time of occurrence

43

Automatic Reporting

Automatic Report Generation

– A ranked list of the top-10

impacted cells

– Reports for most important radio-related topics:

– Sleeping Cells, Pilot Pollution, Ping-Pong Handovers, KPI violations, etc.

Cell Criteria KPI Values Failure EventsTotal

EventsThreshold Unit Type

31083 Samples with Ec/N0 in RrcConnReqs (all causes) 42% 743 1781 <=-10 dB










Cell Criteria KPI Values Failure EventsTotal

EventsThreshold

32801 Samples with high Propagation Delay 100% 519 519 >=24










44

Ping-Pong Handover Report

Ping-Pong Handover Detection:

– Radio Link addition & deletion within 3 sec.

– Reporting of all calls

– Ranked list of impacted cells

Drill-down to call details

• Waste of radio resources

• Strong indicator for pilot

pollution

• Significant impact on

HSDPA throughput

45

Pilot Pollution Report

Pilot Pollution Detection

– Identify areas & cells with high degree of

interference

– Report with ranked list of impacted cells

• Waste of radio resources

• Source of QoE problems

• Cell breathing

46

Automatic Alarming

OptiMon will generate

automatic alarms that are

submitted to configurable

users by email or SMS.

Users will have the

possibility to define

thresholds:

– absolute thresholds, e.g.

call drop rate exceeds 2%

– relative thresholds, e.g. a

change in call drop rate of

0.5% compared to

previous value

Thus, users do not have to

observe OptiMon

continuously, but will be

notified if any configured

threshold has been

exceeded.

47

Portable OptiMon System

OptiMon solution is offered as a portable turn-key solution

– Campaign-based radio optimization projects

– Allows to move the system from one location to another

Share the cost for optimization system amongst different RNCs and Sites

Enable more extensive use of system

Less administrative overhead for system

• Significantly improved ROI

• Shorter time to break-even

48

Portable OptiMon System

Custom-tailored and Scalable

– Flexible quantity and types of physical

interfaces

– Scalable processing performance

(servers)

Lightest solution in the market

Auto-Configuration of system

– Significantly reduces the overhead to get

a system up-&-running in a new location

Easily manage separate projects for

different RNCs or areas

– Easy set-up and handling of separate

projects

49

Drive Test Correlation

DT-Synergy

Drive Test Analysis

Single Call Analysis

Dashboards

MSC-S

Protocol Capturing and Processing

NS

A

Iu CS/PS Iub

Drive Test system

TrendNavigate

Automatic correlation with

Iub/Iu

Integrated call analysis

Import of Drive Test data

(TEMS, Nemo, Nitro, Romes)

50

Correlate Drive Test Data with Iu/Iub Monitoring

Import Drive Test and Cell Planning data into DT-

Synergy

Automatic Call Correlation

Combined analysis of Drive Test and Protocol Data


DT-Synergy

51


DT-Synergy

Correlates protocol analysis

sessions with drive test log files and

network planning data (GIS)

– Perform correlated call analysis of

Uu, Iub and Iu interfaces

– Correlation of calls is done

automatically

– Call data are plotted on

geographical maps

– Radio and measurement

parameters are graphically

displayed

Supported DT log formats

– NEMO, Agilent (Nitro), TEMS, and

R&S

52


DT-Synergy

Strategy: – entry-point into optimization

– optimizers: are often not used protocol testing, while other peer

departments have NSA already

– Inexpensive up-sell opportunity for NSA customers

– get foot into the door

– don’t need TrendNavigate

– Positioning compared to Actix & Co.:

– we are not replacing DT post-processing platforms

– only indirectly competing: price & features

Key Values: – access to the entire chain: Uu - Iub - Iur - Iu

– DT is blind on anything else beside Uu!!!

– See all calls in RNC + KPIs

– ---> paving the road for TrendNavigate

53


DT-Synergy

DT-Synergy supports four DT vendors – R&S Romes

– Agilent Nitro

– E/// TEMS Investigation

– Anite Nemo

– Each vendor has been field-tested (VFD2, SFR, NSN, MKA, …)

How to get support for additional DT tools? – Opportunity – bring us friendly customers

– Approx. 15 different drive test systems are used in the market

– TEMS, Romes, Nitro and Nemo have a market share together of

>66%

54

Use Case Example: Signaling on Uu, Iub and IuCS RNC Does Not Respond Call Drop

In this period SC 405

is fading out but the red

Color is indicating that

it is still the serving cell

In this period SC 95 is

red because it

is serving the call but

there was no SHO before

55

From this picture you

can see that mobile

behaves correctly. It

sends event 1a with

SC96 towards the

RNC. But RNC does

not react. Either the

neighbor is not

defined or the RNC

is in overload.

RNC is the root

cause for missing

handover

There are red dots that identify

Measurement reports from the

mobile.

But there is no blue icon that

identifies RNC actions – e.g.

Active set update

Use Case Example: Signaling on Uu, Iub and IuCS RNC Does Not Respond Call Drop

56


DT-Synergy

Network Diagnostics OptiMon Software

Thank you for choosing Tektronix More information at : http://www.tek.com/optimization

http://www.tek.com/optimization

http://www.tek.com/optimization

58

Femto Cell: Network Topology without Iu-h support

NSA can monitor simultaneously the Iub, IuCS, and IuPS interfaces at the RNC and HNB GW

– Both ATM and IP transport are supported

– 3GPP R6 is fully supported, R7 will be available in Q1’2009

– LTE is also supported

All the interfaces in the Mobile Core are also supported

K18 STM1

K18 E1

K18 GbE

59

Femto Access Plan: implement Iu-h

DSL Modem / Router DSLAM

IuCS

IuPS

With the Iu-h protocol stacks implemented, NSA will be able to trace

the calls end-to-end:

– until IPsec is implemented, the vendor must configure the HNB/HNB-GW

without IPsec encapsulation

K18 STM1

K18 E1

K18 GbE

Documents

OptiMon Detailed Presentation