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: [email protected]
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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