From GSM to VoWiFi; The Evolution of Performance

Management in Mobile Packet CoreHelge Ytre-Hauge, System Manager Mobile Packet Core, Telenor Norway

Telenor in Norway

• Norway

• 5.2M people

• Rich and happy in most rankings

• Export of oil, gas, fish and metals

• Imported 2.8M mobiles 2015

• Telenor Norway

• Market leader with mobile, fixed, and

TV operation

• 21 % of Telenor Group Revenue

• 3.2M Mobile Subscribers

– 50% of Norwegian market

– 1.5% of Telenor Group subscribers

2

Telenor in Norway

• Norway

• 5.2M people

• Rich and happy in most rankings

• Export of oil, gas, fish and metals

• Imported 2.8M mobiles 2015

• Telenor Norway

• Market leader with mobile, fixed, and

TV operation

• 21 % of Telenor Group Revenue

• 3.2M Mobile Subscribers

• Mobile Network, 2G/3G/4G

• 99.8% coverage

• Handsets

– 80% smart phones / 50% iPhones

– 60% 4G phones

– 30% VoLTE capable

• 85% of data at 4G

3

EPC in Mobile Networks

4

SGSN/MME

SGW/PGW/GGSN

Internet

EPC

Corporate

Access

UDC

Signaling

& CS

Radio Access

2G

Policy &

ControlHSS

HLR

PCRF

OCS

3G 4G

ePDG

M2M

RCS

VoLTE

VoWiFiIMS

SBC MTAS

CSCF SBG

STPDSC

MSC

MGW

WiFi

15 VTIs

5

Mobile Data and Complexity Growth

2G/3G

4G Data

4G w/CSFB

2008 2009 2010 2011 2012 2013 2014 2015 2016

VoWiFi

w/ 4G

mobility

4G Voice

VoLTE

Network

Complexity

Importance of

Services

The Evolution Challenges

6

Reporting

Solution

PrOptima™

Organization

Size

Network

Complexity

Importance

of Services

Organization

Size

PM Tool

Capabilities

Organization &

Processes

Network

Measurements

Network

Equipment

Properties

The Knowledge Pillars of a Good Reporting Solution

7

Reporting

Solution

PrOptima™

The Knowledge Pillars of a Good Reporting Solution

8

Reporting

Solution

PrOptima™

Network Vendor

MYCOM OSI

Network Vendor

Telenor

Network

Equipment

Properties

Network

Measurements

PM Tool

Capabilities

Organization &

Processes

The Knowledge Pillars of a Good Reporting Solution

9

Reporting

Solution

PrOptima™

Network Vendor

MYCOM OSI

Network Vendor

Telenor

Organization &

ProcessesTelenor

Telenor Telenor

PM Tool

Capabilities

Network

Measurements

Network

Equipment

Properties

• EPC

• 1 HW

• 2 Configs

• 2 Functions

• 15 Min Granularity

VTI Optimization

• Insight in PrOptima™, Mobile Technology, Network

Equipment and Telenor processes have led to

optimized VTI structure.

• Trade-offs between consolidation and separation,

HW vs SW Applications

10

SGSN

GGSN

GGSNSGSN

SGSN GGSN

SGSN VTI + TAP GGSN VTI + TAP

2010

• EPC

• 1 HW

• 2 Configs

• 5 Functions

• 15 Min Granularity

VTI Optimization

• Insight in PrOptima™, Mobile Technology, Network

Equipment and Telenor processes have lead to

optimized VTI structure.

• Trade-offs between consolidation and separation,

HW vs SW Applications

11

SGSN

PGW

SGWGGSN

MME

GGSNSGSN

MME SGW

PGW SGSN GGSN

MME SGW PGW

EPC VTI + TAP

2011

SGSN VTI + TAP GGSN VTI + TAP

• EPC

• 1 HW

• 2 Configs

• 5 Functions

• 15 Min Granularity

VTI Optimization

• Insight in PrOptima™, Mobile Technology, Network

Equipment and Telenor processes have lead to

optimized VTI structure.

• Trade-offs between consolidation and separation,

HW vs SW Applications

12

SGSN

PGW

SGWGGSN

MME

GGSNSGSN

MME SGW

PGW SGSN GGSN

MME SGW PGW

One EPC VTI + TAP

2012

• EPC

• 1 HW

• 3 Configs

• 6 Functions

• 5 Min Granularity

VTI Optimization

• Insight in PrOptima™, Mobile Technology, Network

Equipment and Telenor processes have lead to

optimized VTI structure.

• Trade-offs between consolidation and separation,

HW vs SW Applications

13

SGSN

PGW

SGWGGSN

MME

ePDG

ePDG

GGSNSGSN

MME SGW

PGW SGSN GGSN

MME SGW PGW

ePDG

One EPC VTI

2015

The User Interface

• Capacity and Quality

• Long term trends – more than a year

• Trends and Reporting – last month

• Routines and well defined KPIs and limits

• Limited number of KPIs per network function

• Aggregated levels

• Troubleshooting

• Events and daily monitoring

• Medium term trends

• Single network elements and unlimited number of measurements

• Large workspaces organized in project books

• Click and Scroll in finished views for capacity and quality

• Complex overview is starting point for troubleshooting

14

The User Interface – Capacity Monitoring Example

15

The User Interface – Capacity Monitoring Example

16

The User Interface – Capacity Monitoring Example

17

The User Interface – Capacity Monitoring Example

18

The User Interface – Key Elements for Easy Maintenance

19

NEs:

• Network Area Totals

• Network Area Content

Multi release KPIs Minimum Report

Maintenence with

Network Upgrades

and Changes

User Interface Tuning

20

Starting point matching old solution

Can we make it simpler?

Could we add more?X XX

Email Reports – Better Control with Less Resources

• No projects books for

emails

• Specially designed

workspaces with suitable

layout for emails.

• Calculation time is

hidden.

• Capacity and quality

trends easily spotted

21

Alarms – Better Control with Even Less Resources

• Too many reports too often is time consuming.

• Frequency vs Control is trade off

• Emails must be scheduled

• Email alarms can be triggered when limits are crossed.

22

Email Reports used to monitor events

• Expected traffic peaks,

upgrades or other

changes.

• Performance reports

distributed at wanted

frequency to a broad

team of internal or

external stakeholders

23

VoLTE - New Technology and Increased Complexity

• Long pilot phase with few subscribers needed to verify and implement

technology, internal and external pilots

• Launch with slow ramp up - stepwise provisioning of selected terminals

• Next main step is launch for Apple

24

5x

VoLTE KPI Example – SRVCC Success

• Call Handover Success from VoLTE to 2G/3G (CS) can be measured in

several nodes, but with different results

• The KPI levels in a pilot phase have limited value

25

Pilot Ramp-up Launch

VoLTE and VoWiFi

Load and Performance Overview?

26

Finding the Right Balance

• The right KPIs

• The right network levels and areas.

• The right time and granularity

• The right people

27

Thank you