www.celcite.com

Multi-Technology / Multi-Vendor SON

Simplifying Network Management for Today’s Complex Networks

Ajay Khanna

CTO and Senior Vice President, Engineering

Agenda

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Challenges of Managing Multi-Technology, Multi-Vendor

networks

Multi Technology SON – Desire or necessity?

Sample Use Cases

Framework/ Architecture

Leveraging OSS Based Mobile Measurements

Business Benefits

Q & A

GSM, UMTS, and LTE Will Co-Exist

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LTE Network Deployments Global Subscriber Connections

Source: Global cellular market trends and insight, Q4 2011 - Wirelessintelligence.com

Operators have to Manage Multiple technologies – GSM / UMTS/ LTE in parallel for next coming years

Connections (Million) Market Penetration(%)

Around 10% LTE

subscribers - 2016

Today

Manage Complex Networks with OPEX

Pressures

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OpEx

Too Many Parameters to Tune…

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Handover

Inter/Intra/IRAT

Admission

& Power

control

User capacity &

QoS

Scheduling &

interference

management

Admission &

power control

Handover &

neighbor

relationship

parameters

Cell selection

& reselection

Power

control

Traffic

management

Handover

Inter/Intra

Radio link

management

Voice and data

dimensioning

Radio access &

resource control

GSM/EDGE UMTS/HSPA LTE

Optimization Engineer and The Dilemma

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Admission &

power control

Handover

Inter/Intra/IRAT

Radio access &

resource control

Cell selection

& reselection

QoS

1000’s of parameters to

Optimize

Multi-vendor Deployments

Ineffective Network

Management Tools

Legacy Network Management Process

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Legacy Network Management Process

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Legacy Network Management Process

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We can’t operate networks in a Semi-Manual way. We need to Automate and evolve…

Multi-Technology/Multi-Vendor SON:

Desire or Necessity

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Data Acquisition

Raw counters Configuration Site Data

ANR

LB

SH

Scripting

Engine

Traces/Mobile

Measurements

SON Feature

Policies

SON Monitor

Configuration

changes

SON Agents

APO

Multi – Vendor Networks

Data Feeds

SON Framework

SON Framework

Increased Efficiency

Focus on Automation

Multi-Technology SON is the next necessary step for operator profitability and survival

The Key Ingredient of SON -

Automatic Intelligent Correlation (AIC)

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Automatic Intelligent Correlation of Diverse Data feeds

to put the Network Analysis puzzle together

Sample Use Cases

13

Sample Use Cases

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Automatic Neighbor Relationship (ANR) Self Healing (SH)

Automatic Load Balancing (ALB) Automatic Parameter Optimization (APO)

Self optimization by

automatic neighbor

relationship addition/

removal and

re-prioritization

Respond to Outage Alarm

by changing coverage

footprint of neighboring

cells as well as parameter

changes

Alleviates Network

congestion by

automatic load

balancing based on the

cell load using

combination of

parameters as well as

cell footprint

X1 X2

Z1 Z2

Y1 Y2 Automatic parameter

optimization by changing

various parameters to

improve network KPIs as

well as for new sites

coming ON AIR

SON Use Case for IRAT

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UMTS

LTE

(Source Sector)

a2ThresholdRsrp

…continue session on UMTS

hysteresis

Time >>

LTE

(Neighbor Sector)

a2ThresholdRsrp (selected neighbors)

IRAT threshold adjustment

helps UE transition to

UMTS earlier

Improved Throughput

Outage

Parameter

Tuning

Vendor / Technology Parameter

Discrepancies

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SON maintains configuration consistency across Vendors to ensure seamless IRAT

transition

IRAT

UMTS -> GSM

oGSM Retune

oGSM Re-Home

Auto-Update UMTS

GSM BCCH retune

LAC Update

Framework/ Architecture

17

Parameter

changes

Scalable Architecture

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EUTRAN

Automatic

Mode

Semi-

Automatic

Mode

Paradigm Shift - Mobile Measurements

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Resource Intensive

No in-building data

Limited test area / samples

In-door as well as Out-door samples

More samples in terms of Geography/

timeframe

Reduced cost of drive testing

Traditional drive test based optimisation Mobile measurements / Traces based optimisation

Parameters Controlling SON Framework

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Neighbor Tuner Parameter VALUE

Max Number of Inter Frequency Relations 30

Neighbor IF Additions per iteration 4

Number of Baseline days data 5

Outage Time 15 minutes

Neighbor Same Band Deletions per Iteration 5

Neighbor SameBand Additions per Iteration 5

Min CS Rab Attempts 10

Min CS Drops 10

Max No of Intra Freq Relation 30

No of previous Hours data for Deletion criteria 150

Weekend Exclusion Saturday- Sunday

Specific Date Exclusion NA

Deny Timer 24

Min Missing Neighbor Drops_SHO_Feedback 10

Load Balancer Parameters VALUE

RRC Admission Reject Trigger_Red 20

Power Admissions Trigger Threshold_Red 20

DL Code Admissions Trigger Threshold_Red 20

UL & DL HW Admissions Trigger Threshold_Red 10

RRC Admission Reject Trigger_Yellow 10

Power Admissions Trigger Threshold_Yellow 10

DL Code Admissions Trigger Threshold_Yellow 10

UL & DL HW Admissions Trigger Threshold_Yellow 10

Max Number of Intra Neighbor 5

Min RL Contribution for Intra Neighbor 2%

Feedback and Verification Timer 5 Hours

Black List Timer 24 Hours

Automatic Load Balancer (ALB)

Automatic Neighbor Relationship (ANR)

Enabling operators to take control of the SON Framework

Data Interfaces

Evolving…

Network Management Technology SON Specifications

Admission Control

Load Balancing

Compete or Complement: Vendor LTE SON

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PM

CM

FM

MM

PM

FM

CM

MM

PM

FM

CM

MM

Outage Compensation

RACH Optimization

ANR Self Organizing

LIMITED Current SON Implementation

Handover Optimization

Fully Automatic / Semi-Automatic Mode

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Neighbor Additions for 379 cells

HOHYST parameter change from 5 to 4

Power changes for 69 cells

IRAT neighbor changes

Fully Automatic

Mode

Semi Automatic

Mode

Multi-Technology

Multi-Vendor Platform

Operators can introduce process automation as and when they feel comfortable

Challenges for Multi-Technology SON

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Are the operators ready to embrace Multi-Technology SON ?

Are the networks/ interfaces ready to implement an integrated

solution covering various network domains?

Can we have a vendor independent definition of architecture

components and interfaces?

Are there well-defined parameter sets to control SON policies

enabling operators with some level of control?

Business Benefits

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Benefits

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Increased

Operational

Efficiency

Improved

Network

Quality and

Customer

Satisfaction

OPEX /

CAPEX

Savings

Better Network

Control /

Management

Across

Vendors

Questions

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Contact

Ajay Khanna

Celcite Management Solutions

CTO and Senior VP - Engineering

Email: Ajay.Khanna@celcite.com

Mobile: +1-973-652-9258

www.celcite.com

Stop by stand No 8

www.facebook.com/celcite

www.twitter.com/celcite1

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