Astellia Roaming Solution

8/10/2019 Astellia Roaming Solution

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OSTILL-Fotolia

Astellia Roaming Solution

Increase Roaming revenues


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Astellia confidential

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Discussion agenda

Challenge & importance of Roaming

Presentation of Astellia Roaming solution

Benefits

Case studies

Screen shots


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Challenges & importanceof Roaming

Importance of Roamers for mobile operators- Large part of revenue

- Very high margin customers

Operator objective is to provide the highest QoS to roamers

to:- Maximise capture rate

- Retain roamerson your network

- Increase trafficand network usage

- Improve brand imagethrough top roaming services

- Ensure roaming availability abroadto your customers


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4

Astellia value propositionfor Roaming

Provides CORE information onInboundand OutboundRoamers- Location Update

- SMS

Provides detailed RAN information onInboundRoamers- Location Update

- SMS

- Traffic (voice & data)

- Loss Of Roamers

- Down to Cell level


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Astellia value propositionfor Roaming

Check Roaming Agreement

Detect and measureSteering OfRoamers(SOR) solutions

Investigate issues affecting Roamers

- Analysis of bothRadioand Coreproblems

Compliant with Global Roaming Quality(GRQ) parameters

- based on passive probe


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6

All-in-one solution

DATA CAPTURE & PROCESSING

PROBES

KPIs

CDRs

CONSOLIDATION

OMC COUNTERS

DATA IMPORT

REPORTS ALARMS TROUBLESHOOT

& ANALYSIS

AUTOMATIC

DIAGNOSIS

System

configuration

&

supervision

C

ustomer-centric

Servicefocused

Networkaware

Cells

Roamers

Per Handset type

Network

VIPs

Packet Services
http://www.mobilecomms-technology.com/projects/cingular/cingular1.html


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Vision of roamers experience

True visibility of end-user QoS- Each roamer is a drive-tester

- Relevant KPIs

Quality of Experience (QoE)

- Outboundand Inboundroamers

LU Repartition per Country/Operator

SMS ratio failure

Detection and measure of SOR(Steering Of Roaming)

- For InboundRoamers

Location Update, Traffic, Loss and Recoveries

- Data service level analysis Web portal page download time per cell

MMS/email success rates

Individual throughputs

Packet Service MonitoringHTTP/WAP

MMS/email

FTP

Streaming



8

Intuitive KPIs visualization

Web interface



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Automated reporting

Marketing &

Management

Optimization& engineering

Operation

& Maintenance

Experts KPI = f (counters)

Fully customizablereport design

- Create new KPIs- Create new charts and tables

- Create new reports templates

Automaticreport delivery

- PDF / excel / word reports

- Delivery by email to differentteams

- Daily, weekly, monthly

Consolidated reportsto HQs

Customer Care



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Alerting

Fully customized alarms- Based on any QoS / QoE KPIs

- Tuned to each part of the network

Alarms triggering

- Based on static / dynamic thresholds

- Sent via SNMP & email to the right people

Alarms handling

- Alarm history

- Attached KPIs for alarm prioritization

Number of impacted calls / level of severity

- Direct hyperlink to start investigation Trendson alarms

Time

Dropped

calls

Max

threshold



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Troubleshooting

Direct link to troubleshooting- Statistics to CDRs

Protocol decoding- All messages are decoded up to TCAP

- 1 click access to Decoding from AA toolbar

End-to end visibility:

- Access Core network

Multi-Interface Call Flow- MAP A (GSM)

- MAP Iu (UMTS)

- MAP Gb (GPRS)

- MAP with CAP, SMS, INAP, ISUP



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International links visibility

Monitoring ISUP international links provides you informationon:

- Traffic repartition for Incoming/Outgoing international calls

For your Outbound Roamersto national destination

For your subscribersto International destination

For Inbound Roamersto International destination

- Call efficiency

Originated

Terminated

- Call duration

Minimum, average, maximum

- Troubleshooting international links Statistics: ASR, ABR, NER

Call description: CDRs



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Conclusion



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Benefits

Evaluate Quality of Servicedelivered toInboundandOutboundRoamers- Down to cell level

Mobility

LOR: Loss Of Roamers

Analyze roamers behavior- Voice traffic

- SMS

- Data services

Improve business efficiencywith international operators- Assess & improve your roaming agreements

- Detect Steering Of Roamers (SOR) solution

- Measure international links usage


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Strategic DataUsed by Several Departments

Technical & Operations- Regular reporting:

Roaming capture rate

Roaming traffic

- Detection and investigation ofRoaming problems:

LOR

Weak roaming points

- Follow-up of radio optimisation

- QoS follow-up for Roamers

- Definition of optimisation

priorities

Marketing- Roaming hot spots for

capture and traffic

- Roamer profiling

- Reporting

- Roaming agreements

Management- Top roaming operators

- Automated reporting


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Ensuring rapid feedback


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ROI operators feedback

Inbound Roaming contributes to revenue at an average rate of10% to 30%

- 2% to 5%increase of Roaming revenue following the Astelliasolution deployment

Avoid loss of Traffic- As there is no roamers complaints, Astellia solution is the only way

to detect and solve unknown problems

Reduce Drive Tests by 50%

- Detect coverage issues and target drive test on specific cells

2 to 6 months ROI


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Increase Roaming revenues

Inbound GSM roaming The roaming strategy

- Catch and Retain roamers on your network Detect and analyze roaming capture cells Benchmark your capture with your competitors (new roamers / competitor coverage holes) Reduce areas where you loose roamers (Loss of roamers) Identify & analyze problems for your Inbound roamers

- Increase inbound traffic and network usage Optimize top traffic networks/cells Ensure the traffic of your roamers

Outbound roaming

- Ensure roaming availability abroad to your customers Identify & analyze problems for your Outbound roamers Check outbound roamer traffic to your network

Analyze issues

- Troubleshoot Correlate Access and Core causes Measure quality of international ISUP links

Steering of Roamer

- Improve brand image through top roaming services

Identify and Check Steering Of Roamers (SOR) implementation Profile Inbound and Outbound Roamers

One Roaming Network Group strategy

- Ensure roaming revenues inside the group One roaming network


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Case Studies


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Reporting:Profile Inbound

and OutboundRoamers


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Profile Inboundand OutboundRoamers

LU success rate SMS MO/MT international success rate

Per operator group

Per country

Back


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Case study 2Identify & analyze problemsaffecting outboundroamers

A l bl ff ti


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Analyze problems affectingoutboundroamers (1/3)

Investigation on International MAP- Below is thedistribution of failed causesfor your subscribers

when performing Location Update abroad

Roaming not allowed:

problem on subscriber rights

PLMN not allowed:

No rights on a specific PLMN

Other PLMN PSTN Your network

GatewayMSC / VLR MSC / VLR

HLR

AuC

Your

subscribers

Update location

A l bl ff ti


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Roaming not allowed:Investigation on International MAP- Identify subscribers not able to roam (Roaming not allowed)

Contact these subscribers to offer them roaming service

A l bl ff ti


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PLMN not allowed :Investigation on International MAP- Determine which PLMN are concerned

- Detect operators who always reject LU for Outbound roamers

and then, compare your Roaming Agreement List withreality given by Cigale CORE CS

Back


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Case study 3Identify & analyze problemsaffecting inboundroamers

Id tif & l bl


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Identify & analyze problemsaffecting inboundroamers (1/3)

Investigation on International MAP Below is thedistribution of failed causesfor the Roamers

when performing Location Update on your Network

System failure Network Resource in HLR:

Foreign HLR not able to answer

to VLR of your Network

because of lack of resource

Roamna_plmnRoamNotAll:

No subscription to roam on your Network

Other PLMN PSTN Your network

GatewayMSC / VLRMSC / VLR

HLR

AuC

Inbound

roamer

Update location

Id tif & l bl


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System failure Network Resource in HLRInvestigation on InternationalMAP

Determine which subscribers are concerned

- 98.3 % are Telecom Italia subsc. in the current case: IMSI numberrange 22201

Contact Foreign Operator to inform and correct issue on HLR

Id tif & l bl


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No subscription to roam on your network :Investigation on InternationalMAP

Determine which subscribers are concerned

In those 6335 cases most impacted IMSIs start with 31026

Contact Operator to sign a Roaming Agreementand generate extra revenue

Back


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Case study 4Steering of Roamers (SOR)


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Steering of Roamers (SOR)

For Inboundand Outboundroamers- Location Update efficiency per operator

- Location Update efficiency per HLR (based on GT - Global Title)

- Example

For an operator, if one HLR always rejects all LU and another HLRalways accepts them, then a SOR is implemented

Detect SOR implemented by other operators

Get statistics to check / measure your own SOR solution efficiency

Back


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Case study 5One Network

shared by an operator Group

Roaming Group Policy


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Roaming Group Policy One Roaming Network

For Inboundand Outboundroamers in the Group

Check Locationefficiency

- Must be near 100% efficiency Analyze Traffic

- How do your roaming partners use Voice?

Originated Terminated

Duration

- SMS usage?

- Do they call home?

- Data usage?

- Usage of Group services?

Detect unusualbehaviorwith a partner

- No traffic, SMS failure, LU inefficiency,

Back


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Case study 6Troubleshoot & push problem analysis


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Better investigate on causes

Here are examples of message interpretation at MSC level

PLMN not allowed(PLMNNA)

Network Failure(NF)

MSCBSC HLRDA

Cigale CORE CSCigale GSM

roamna_plmnRoamNoAll

roamna_RoamNoBarring

sysfail_netwkResHLR

Unexdata

sysfail_netwkResVLR

Sysfail

Case study


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Case studyTo better investigate on causes

Here are examples of message interpretation at MSC levelMSCBSC HLR

DA

Cigale CORE CSCigale GSM

Back


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InboundRoamingPrinciple and objectives


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Roaming categories

Main categories of roamers that Astellia considers*Collected: Roamers coming directly from a foreign network

*Retrieved: Roamers coming from a competitive network

*Transit: Roamers moving within your network

*Back: your subscribers coming back from another network

Useful to analyze the behavior of the roamers and understand how yournetwork catches and keeps the roamers.

How to increase revenues?


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TopCapture cells

TopTraffic cells

Loss of roamers cells

Back

refresh

How to increase revenues?categories and principles


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Case Study 7Improve Radio Access

for your InboundRoamers

Identify & analyze the main


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Below is thedistribution of the main roaming networksperforming Location Update on the visited Network

Roaming networks

Number of

Location UpdateAttach efficiency

By Imsi, Top 20 New (Request) from Telia

0

10000

20000

30000

40000

50000

60000

70000

DEU

262-01,T-Mo

bileD

1

SW

E240-01,TeliaM

obile

DNK238-01,Tdc

-mobil

DEU262-02,Vo

dafoneD2

SWE

240-07

,Tele

2Com

viq

DNK238-02,Sonofon

DEU262-0

3,E-Plus

DNK238-30,Oran

ge

SWE240-08,VodafoneSE

NOR242-0

2,Ne

tcom

NOR242-0

1,Telen

or

DEU262-07,

O2DE

POL

260-03,OrangePL

SWE240-02,H3G

SE

Network23807

POL260-01,PlusG

SM

FIN244-91

,Sonera

GBR234-10

,O2UK

PHL

515-03,SmartGold

NLD

204-08,KPN

Mobile

0

0,2

0,4

0,6

0,8

1

Collected(Req) Retr ieved(Req) New/(Collected+Retr ieved) New(Req)

Identify & analyze the main

inboundroaming networks

Determine your capture


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Determine your captureefficiency

Most of the roamers are classified as collected, Means that the coverage at

borders and airports must be good. This operator outperforms competitors

networks

Compare your Roaming capture performance with your competitors

Top 20 capture cells


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Top 20 capture cells

Determine top cells where you capture roamers

d f


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Identify LU reject causes

Location Area Not AllowedThis cause is sent to the MS if it requests location updating in a location area where the

MS, by subscription, is not allowed to operate

PLMN Not Allowed CauseMain reason for PLMN Not Allowed. Cause normally used for competitors.

=> Should not be used for rejecting roamers.

Network Failure CauseMain reason for Network failure => This cause is mainly sent when we are in face to an

issue of transmission.

Unknown In HLR CauseDeactivated IMSIs (for # reasons out of date, stolen). People try to use them by forcing. If it

observed for a few months =>problem with routing MAP messages.


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LU efficiency

Determine LU reject causes per operators

Analyse the main capture areas


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Optimization

- Correlation with the A interface analysis Ensure the roamers can attach on GSM network and make a call (CSSR

analysis)

Ensure the radio coverage is good in this area (radio call drop rate)

- Verification of the

neighboring cells

(airports, borders)

Analyse the main capture areasInboundroamers

Back


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Top traffic networksTop traffic cells


Traffic Main roaming networks


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Distribution of the roaming networks in term ofvoice traffic(minutes) or SMS

Traffic Main roaming networksInboundroamers (1/2)

Originating

Calls

Terminating

Calls

Traffic Main roaming cells


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Distribution of the most important cellsin term of calls(number or duration)

Traffic Main roaming cellsInboundroamers (2/2)

Back


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InboundRoamingEnsure the roaming traffic

Traffic on roaming networks


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Distribution of the roaming networks in term ofvoice traffic(minutes) or SMS

Traffic on roaming networksInboundroamers (1/2)

Originating

Calls

Terminating

Calls

Traffic Main roaming cells


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Distribution of the most important cellsin term of calls(number orduration)

Traffic Main roaming cellsInboundroamers (2/2)

Back


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Benchmark your roamers captureWith your competitors


Competitors failure


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Competitors subscribers try to register in those cells (coverage issues). Roamers on thecompetitors network will encounter the same problem.

Operator should take actions to retrieve or even capture roamers on

those areas (Ensure the radio drop rate is low in these cells and the

neighbouring ones)

Competitor s failurecoverage holes

Back


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Customer case studyLossof your InboundRoamers

Reduce areas where you loose Roamers

Retainability Loss of Roamers


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Loss of roamers analysis per cell

- Detection of the roamers losses through the study of theinternational MAP links

LOR detection

Retainability Loss of RoamersInboundroamers

Improve roaming retainability


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Based on operators ownsubscribers.

Detection of areas withweak radiocoverageand potentialloss ofsubscribers.

Weakness is detected mainly indense urban areas.

Improve roaming retainabilityUsing standard detection method

Top 20%

Top 20% to 40%

Weak radiopoints

/ severity level



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Based onroamers statisticsexclusively.

Identification of areas withpotential subscribers retentionweaknesses.

Weakness is detected in touristicand coastal areas.

Improve roaming retainabilityUsing Loss Of Roamers information

Top 20%

Top 20% to 40%

Weak roamingpoints

/ severity level



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Bcch interference on a hotel indoor site- Hotel (63453, Indoor) Bcch 10, TRXs 14,32,56- N_MR66_Hotel (60413, Macro) Bcch 39, TRXs 10,30,34,41,47,54

Improve roaming retainabilityExample of cell analysis



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Number of New roamers + 17%,

from ~26500 to ~31150

Roaming traffic + 51%,

from 684 to 1033 Hours

Roaming Loss value on Top LOR cells - 44%,

from ~300 (for ~26500 New) to ~200 (for ~31150 New)

Improve roaming retainabilitySome figures on the first month MSCs (Mt-8vs. Mt)

Back


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Customer case studyImprove accessibility to Data services

Analysing Data accessibility


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Handset data registration

Attachment

OK

Data establishment

PDP Context

OK

Data Transfer

Services

OK

SGSN GGSN IP

Subscribers need to passthese 3 steps

in order to access Wap, Http & MMS services

Analysing Data accessibility


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Annexes

Overview of Data Sources


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(1/2)

MSC

A

IuCsIuPs

Abis

GGSN

BSC

RNC

BTS

BTS

NODE

B

NODE

B

HLR

Gr

SGSN

PCU

C/D

Gp

Other

PLMN

Iu b

Abis

Iu b

GbGn

RNC

Iu r

GiISUP

PSTN

Int.

GTW

Int. MAP

Monitored interfaces

Cigale Process


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Engine generates a MySQL database

Supports E1, HSL, SIGTRAN interfaces

Cigale Process

Probe to record MAP and A links

on PCM, Ethernet or HSL

Cigale Engine

MySQL

Activity Analysis

CDR

generation

Stats

Trends & Aggregation

Roamers Classification 1/2


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Monitored Network

Foreign Network

Competitors Network

5

5 Retrieved(New)

6

6 Transit

1

Foreign subscriber1

2

Arrival on Observed network24

4 Loss of Radio Link

3

Collected(New)3



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COLLECTED RETRIEVED

TRANSIT

NEW

ALL

Results

per IMSI

BACKIOL


Back (IOl)


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Back (IOl)

Monitored Network

2Loss of Radio Link24

Back(iol)4

Home Subscriber1

1

3

Failed LUOld LAC = iol3

LOR Option (1/2)


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LOR Option (1/2)The MAP Cancel Location message

Previous Network

New Network

ROAMER

HLR

VLR

BSC

VLR

BSC

MAP InterfaceA Interface

1 Location Updating Rq

LOR Option (2/2)


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Activity

Activity

MAP_Cancel_Location

LOSS

RECOVER

MSC

TL

TR

Time

T0

ROAMER

HLR

LOR Option (2/2)The concept of loss and recovery

LU by network of origin


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LU by network of origin

LU Split on reject cause


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LU, Split on reject cause

Loss of Roamers (1/2)


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Traffic, celld t k f i i


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and network of origin

Detailed activity of a Roamer(1/2)


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(1/2)

Detailed activity of a Roamer (2/2)


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y ( / )

Documents

Astellia Roaming Solution