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RF Optimisation
Safe harbor
• Neither the information nor any opinion expressed in this presentation constitutes an offer, or invitation to make an offer, or to buy any security issued by the company. This presentation contains
predictions, estimates or other information regarding the Company's operations which are forward looking in nature. While these forward looking statements represent our best current judgment on what the
future holds, they are subject to risks and uncertainties that could cause actual results to differ materially and may involve risk and uncertainty. This presentation is prepared for general purposes only and
does not have any regard to the specific investment objectives, financial situation and particular needs of any specific person. No liability for any loss will arise with the company as a result of the action
taken on the basis of information contained herein.
•For a discussion of the risks and uncertainties that may cause results to differ, you should review GTL’s filings with stock exchanges, including the annual report and quarterly disclosures.
Network Planning, Design & Optimisation
Core Offerings
2
Imperatives for Optimisation
RF optimisation remains one of the key challenges in any network.
Identifying potential faults in the network and resolving them before
they affect network performance.
Rectifying causes of faults affecting network performance.
Leads to efficient use of the spectrum.
3
Optimisation Overview
4
Need for optimisation
Network issues that may generate a requirement
Perceived reduction in network quality.
Indications from network performance monitoring.
Subscriber's experience of using the network.
Maximising the use of existing infrastructure.
Operators wants to ensure the best returns on investment.
Introduction of new services.
Maximise existing resources to accommodate new services such as GPRS.
Change in original design parameters.
▪ Flawed original design in format.
▪ Original design information has changed.
5
Network Lifecycle
Licence
Award
Swap Network
Management
Planning
(If required) Network Lifecycle
Continuous Network
Optimisation
Rollout
Pre Launch
Optimisation
6
RF Optimisation
Optimisation
Pre Launch Virtual Continuous Centre Swap
Optimisation Optimisation Management
(If required)
- BTS upgrade
Virtual Optimisation Centre
- BTS re-homing
- BSC re-parenting
- Transmission Re-engineering
7
Pre Launch Optimisation
Pre Launch
Optimisation Objectives
High rate of integrations
Continuous
Optimisation Low traffic (Pre-launch or launch)
Predominantly drive data dependant
Swap
Management
8
Optimisation Process – Single site verification
Site
Pre Launch Identification
Optimisation
RF Site Coverage
Audit Verification
Continuous
Optimisation Reconfiguration
Parameter
verification
Fail
Swap Problem
Management Analysis
Site Pass
Acceptance
9
Optimisation Process – Drive Test Based
Cluster Site Site
Pre Launch Identification Identification Acceptance
Optimisation
Cluster Cluster
Stimulation Preparation
Continuous
Optimisation Drive Test
Data Analysis Reconfiguration
Fail
Swap Problem
Management Analysis
Cluster Pass
Analysis
10
Cluster Analysis
Determine clusters for acceptance
Drive Test Characterise performance
Results
Ensure correct site configuration
• Parameter Setting
• Neighbors
• Powered
• Stable
Drive tests
OMC Simulation
Data Process data
Data
•Call statistics
•Key measurement events
• Neighbor analysis
•Key measurement data
Analysis
Remodelling
Reconfiguration
• Parameters
• Neighbors
• Report Hardware
Requirements
11
Cluster Reconfiguration
Pre Launch
Optimisation Hardware Cell parameter
Optimisation optimisation
Antenna Reorientation Handover parameters
Antenna Down tilt Power planning
Antenna Relocation Neighbour list reconfiguration
Continuous
Optimisation Antenna Height adjustment Frequency planning
Masthead Amplifiers
Swap
Performance Monitoring
Management
12
Pre Launch Optimization
What GTL can do for On Site
Pre Launch Off Site
Optimisation you
Cluster
Parameter
Identification
Analysis
Cluster
Process Creation Preparation
Drive Testing
Continuous KPI Definition
Optimisation Drive Analysis
KPI Reporting
Functionality Modelling
Asses
Network
Training Reconfigure
Swap Cluster Monitoring
Management Config Management
Model Calibration
13
KPI’s to be Monitored
Based on performance of a Network & Cell (TBD : To Be Decided)
Network KPI Deciding
KPI Target Type Factor
CSR (%) 93% Performance
CSSR (%) 95% Performance
TBD upon
DCR (%) 5% Performance
checking trend
Network / to maintain the
Town Level performance of
TCH Blocking 2% Performance the network
and to improve
SDCCH
3% Performance
Blocking
CSR (%) 90% Performance
CSSR (%) 92% Performance
TBD upon
checking trend
Cell Level DCR (%) 10% Performance to maintain the
performance of
TCH Blocking
the network
4% Performance
and to improve
SDCCH Blocking 6% Performance
14
KPI’s to be Monitored
Based on performance of a Network & Cell (TBA : To Be Accepted)
Network KPI Deciding
KPI Target Type Factor
Downlink Rx Qual TBA Performance
Uplink Rx Qual TBA Performance
TBD upon
FER Performance
checking trend
Network / TBA
to maintain the
Town Level performance of
Data Through
Performance the network
output TBA
and to improve
Data
TBA Performance
Accessibility
TBA
Downlink Rx Qual Performance
TBA
Uplink Rx Qual Performance
TBD upon
TBA checking trend
Cell Level FER Performance to maintain the
performance of
Data Through TBA the network
Performance
output and to improve
Data Accessibility TBA Performance
15
Reports
Deliverables
Pre Launch
Optimisation Pre Launch Optimization
Cell / Cluster Drive Test and Analysis Report.
Quality issues identification and RX lev, RX Qual, TCH Blocking,
SDCCH Drop,HO Issues, Call drop problems, and call set up
issues analysis.
Continuous
Optimisation Cell / Cluster Optimisation Report.
RF parameters audit and tuning : neighbour site list, power
parameters, HO parameters, etc.
Antenna engineering tuning.
Swap
Management Cell / cluster Optimisation and tuning to reach acceptance criteria.
16
Reports
Traffic Statistics Analysis Report.
Pre Launch
Network Analysis and Optimisation Report.
Optimisation
Cell, cluster, Network drive test reports from post processing tool.
RF coverage and quality assessment report.
Continuous Radio and system Parameters audit and tuning report.
Optimisation
Optimisation Report.
Acceptance Report.
Swap
Interference Measurement.
Management
Updated network site database.
17
Continuous Optimisation
Pre Launch Objectives
Optimisation
Maintaining the traffic rate within medium to low
To achieve more stability in neighbour/ pilot
Continuous
Optimisation Minimisation of integration Issues
Reducing operational cost
Swap Predominantly OMC R Stats and Counters
Management
18
Continuous Optimisation
Customer Faults Trouble Tickets
Pre Launch
Network Service Level
Optimisation CM Data Call Trace Performance OMC
Targets Status
Drive Test Results Alarms
Continuous
Optimisation Fault
Performance
Resolution
Cell
Prioritisation
Swap
Management
Fault Reports
19
Optimisation Process – Drive Test Based
Determine clusters for acceptance
Characterise performance
Pre Launch
Optimisation Ensure correct site configuration
• Parameter Setting
• Neighbors
• Powered
• Stable
Drive tests
Continuous Process data
Optimisation •Call statistics
•Key measurement events
• Neighbor analysis
•Key measurement data
Analysis
Remodelling
Swap
Management Reconfiguration
• Parameters
• Neighbors
• Report Hardware
Requirements
20
Cluster Reconfiguration
Pre Launch
Optimisation Hardware Cell parameter
Optimisation optimisation
Antenna Reorientation Handover parameters
Antenna Down tilt Power planning
Continuous Antenna Relocation Neighbour list reconfiguration
Optimisation Antenna Height adjustment Frequency planning
Masthead Amplifiers
Swap
Management Performance Monitoring
21
Continuous Optimization
Pre Launch Off site What GTL can do On Site
Optimisation for you
Audit OMC Reporting
Benchmarking
Cell Prioritisation
Continuous Process Control
Optimisation
Config Fault Resolution
Management
KPI Definition Drive testing
KPI Reporting
Swap Change
Functionality recommend
Management
Asses
Training Network
Reconfigure
22
KPI’s to be Monitored
Based on performance of a Network & Cell (TBD : To Be Decided)
Network KPI Deciding
KPI Target Type Factor
CSR (%) 93% Performance
CSSR (%) 95% Performance
TBD upon
DCR (%) 5% Performance
checking trend
Network / to maintain the
Town Level performance of
TCH Blocking 2% Performance the network
and to improve
SDCCH
3% Performance
Blocking
CSR (%) 90% Performance
CSSR (%) 92% Performance
TBD upon
checking trend
Cell Level DCR (%) 10% Performance to maintain the
performance of
TCH Blocking
the network
4% Performance
and to improve
SDCCH Blocking 6% Performance
23
KPI’s to be Monitored
Based on performance of a Network & Cell (TBA : To Be Accepted)
Network KPI Deciding
KPI Target Type Factor
Downlink Rx Qual TBA Performance
Uplink Rx Qual TBA Performance
TBD upon
FER Performance
checking trend
Network / TBA
to maintain the
Town Level performance of
Data Through
Performance the network
output TBA
and to improve
Data
TBA Performance
Accessibility
TBA
Downlink Rx Qual Performance
TBA
Uplink Rx Qual Performance
TBD upon
TBA checking trend
Cell Level FER Performance to maintain the
performance of
Data Through
TBA the network
output Performance
and to improve
Data Accessibility TBA Performance
24
Reports
Deliverables
Pre Launch
Optimisation
Continuous Optimisation
Radio network measurement and analysis report
Containing signal strength, Quality, Time advance,Path loss,
Continuous Frequency distribution, Neighbour selection.
Optimisation
BSS/ RAN parameter adjustment report
Neighbour optimisation parameter, BTS/ MS power control,
Intracell handover, Hierarchy cell structure & cell load sharing.
Swap
Management
25
Reports
Worst cell optimization report
Pre Launch
Optimisation TCH Blocking, SDCCH Blocking, Signal Strength, Bad Quality,
Timing Advance, Sudden Loss, Other Reasons.
Coverage Analysis report
Continuous Drive test, Worst cell, site survey,Antenna rigging.
Optimisation
Capacity Analysis & Recommendation Report
Dynamic full and half rate, Cell load sharing,Hierarchy cell structure,
Dynamic allocation of SDCCH.
Swap
Management
26
Swap Management
Pre Launch
Optimisation Objectives
High rate of integrations
Continuous
Optimisation
High traffic (Pre-Cut and Post Cut)
Predominantly drive data dependant
Swap
Management
27
Swap Management
Pre Launch
Optimisation Swap Planning
Default Parameter
Continuous
Optimisation Parameter Mapping
Validation of Neighbour, BSIC and MAIO
Swap
Management
28
Swap Process – Pre / Post verification
Site
Pre Launch Identification
Optimisation
RF Site Coverage
Audit Verification
Continuous
Optimisation Reconfiguration
Parameter
verification
Fail
Swap Problem
Management Analysis
Site Pass
Acceptance
29
Swap Process – Cluster Based
Cluster Site Site
Pre Launch Identification Identification Acceptance
Optimisation
Cluster Cluster
Stimulation Preparation
Continuous
Optimisation Drive Test
Data Analysis Reconfiguration
Fail
Swap Problem
Management Analysis
Cluster Pass
Analysis
30
Cluster Analysis
Determine clusters for acceptance
Drive Test
Results Characterise performance
Ensure correct site configuration
• Parameter Setting
• Neighbors
• Powered
• Stable
OMC Drive tests
Simulation
Data Data Process data
•Call statistics
•Key measurement events
• Neighbor analysis
•Key measurement data
Analysis
Remodelling
Reconfiguration
• Parameters
• Neighbors
• Report Hardware
Requirements
31
Cluster Reconfiguration
Pre Launch
Optimisation Hardware Cell parameter
Optimisation optimisation
Antenna Reorientation Handover parameters
Antenna Down tilt Power planning
Continuous Antenna Relocation Neighbour list reconfiguration
Optimisation Antenna Height adjustment
Masthead Amplifiers
Swap
Management Performance Monitoring
32
Swap Optimization
Pre Launch What GTL can do for On Site
Off Site
Optimisation you
Cluster
Parameter
Identification
Analysis
Cluster
Process Creation Preparation
Continuous KPI Definition
Drive Testing
Optimisation
Drive Analysis
KPI Reporting
Functionality Modelling
Asses
Network
Training Reconfigure
Swap
Management Cluster Monitoring
Config Management
Model Calibration
33
KPI’s to be Monitored
Based on performance of a Network & Cell (TBA : To Be Accepted)
Network KPI Deciding
KPI Target Type Factor
CSR (%) Improve Performance
CSSR (%) Improve Performance
TBD upon
DCR (%) Improve Performance
checking trend
Network / to maintain the
Town Level performance of
TCH Blocking Improve Performance the network
and to improve
SDCCH
Improve Performance
Blocking
Improve
CSR (%) Performance
Improve
CSSR (%) Performance
TBD upon
Improve checking trend
Cell Level DCR (%) Performance to maintain the
performance of
TCH Blocking
Improve the network
Performance
and to improve
SDCCH Blocking Improve Performance
34
KPI’s to be Monitored
Based on performance of a Network & Cell
Network KPI Deciding
KPI Target Type Factor
Downlink Rx Qual Improve Performance
Uplink Rx Qual Improve Performance
TBD upon
FER Improve Performance
checking trend
Network / to maintain the
Town Level performance of
Data Through
Improve Performance the network
output
and to improve
Data
Improve Performance
Accessibility
Improve
Downlink Rx Qual Performance
Improve
Uplink Rx Qual Performance
TBD upon
Improve checking trend
Cell Level FER Performance to maintain the
performance of
Data Through
Improve the network
output Performance
and to improve
Data Accessibility Improve Performance
35
Reports
Deliverables
Pre Launch Swap Management
Optimisation
Swap Planning Report.
Parameter mapping report
Pre Drive Test Report
Continuous
Optimisation Verification of RF Coverage, parameters audit and tuning : neighbour site list,
Power parameters, HO parameters, etc.
Cutover Drive Test Report
Validation of RF Coverage, parameters audit and tuning : neighbour
site list, power parameters, HO parameters, etc.
Swap
Management Post Drive Test Report.
Improvement of RF Coverage, parameters audit and tuning : neighbour
site list, power parameters, HO parameters, etc.
36
Subjects to Investigate
Non-Working sites/sectors or TRX’s
Pre Launch In-active Radio network features like frequency hopping
Optimisation
•Disabled GPRS
Overshooting sites – coverage overlaps
•Coverage holes
Continuous
Optimisation C/I, C/A analysis
High Interference Spots
Drop Calls
Swap Capacity Problems
Management
Other Interference Sources
Missing Neighbors
37
Subjects to Investigate
One-way neighbors
Pre Launch
Ping-Pong Handovers
Optimisation
Not happening handovers
Footprint and performance of the site as per design
criteria
Faulty Installations
Continuous
Optimisation
Sites not operational
•Faulty TRX
BA list error
Swap
•BSIC, HSN, MAIO Plan
Management
Hopping ON or OFF
38
Recommendations
Defining missing neighbor relations
Pre Launch Proposing new sites or sector additions
Optimisation
Proposing antenna azimuth changes
Proposing antenna tilt changes
Proposing antenna type changes
Continuous
Optimisation BTS Equipment/Filter change
Re-tuning of interfered frequencies
Adjusting HO Margins
Swap Adjusting accessibility parameters
Management
Changing power parameters
MHA/TMA adds
39
Virtual Optimisation Centre
Remote Analytics for Design, Planning & Optimisation
Pre Launch
to achieve minimal startup time, consistent use of
Optimisation
process and tools and concentrated expertise in one
location
State of the art VPO Centre vital stats:
Floor space: 2000 Sq. Ft.
Continuous Seating capacity: 50
Optimisation Internet speed: 2 Mbps
No. of RF engineers: 50
Total man years experience: 10 Years
Tools used for VPO: Asset
Connect
PL4 & MIPT
Swap
Management
40
Virtual Optimisation Centre
Pre Launch
Optimisation
Activities Off shore On shore
Benchmarking
Data Collection
Continuous
Optimisation RF and Transmission Planning
Transmission Network Verification
RF / Line of Sight Surveys
CW Testing and Model Tuning
Nominal Cell Planning
Swap
Management Frequency Scanning
Optimisation
41
Virtual Optimisation Centre
Benefits
Pre Launch
Optimisation Low fixed Cost regardless of the project location.
Fast Delivery Cycle and Quick deployment of project.
Cost effective especially for high cost areas.
Continuous Flexible service packages to meet unique customer needs.
Optimisation
Ideal solution for high-risk or hard to access areas.
Expertise availability guaranteed.
Core expertise group available to service multiple project.
Swap
Management Quick take off without tine lag to mobilize.
Uniform applications on tolls through standard processes.
42
Value Proposition
Risk Sharing - KPI & SLA Based Commitments
End to End RF solution provider
RF Planning, Design and Optimisation done for
31 networks
– Experience across 15 geographies
– Covering 2G, 2.5G, 3G technologies
– Across standards such as GSM, Edge/GPRS,
CDMA, UMTS and WiMAX
Long Standing relations With OEMs At Global
Level
Unique combination of tasks carried out Offshore
and Onshore that give cost efficiencies
Technology and vendor agnostic skill set
43
Case Studies & Capabilities
44
Case Study 1
On many occasions, it has been found that improper RF
cabling gave rise to wrong BCCH - Sector combination.
Corrections were initiated and post correction verifications have
been performed.
About the Client : To find coverage footprint and associated quality plt, drive
Hutchison Essar (Hutch), is a leading GSM network tests were executed with two MS (MS 1-Hutch Idle mode &
operator in India having GSM wireless operations with MS 2 – Hutch Dedicated mode) simultaneously.
a pan Indian footage. The network has been growing
at a very high pace to address competition with more This were done in and around 6km radius centering the site as
coverage and capacity. This entails Hutch to roll out per Hutch specification.
new sites in remote areas of UP. While expanding,
Hutch wanted to have their network optimised From this drive-test data, GTL prepared coverage and quality
plot for newly commissioned site. Results were submitted to
Business Challenge : Hutch. After achieving required results, sites were put on air
for commercial purposes.
Hutch found RF Group of GTL a competent partner to
perform on their behalf optimization activities with Value Delivered :
quality deliverables. In the process GTL got the
responsibility of around 240 sites (170 existing & 70 GTL successfully completed the optimisation activity for
new sites) to be completed during October 2005 to the project covered 170 existing sites and 70 new sites during
March 2006. Oct’05 to Mar’06.
All sites were either in Highways or in remote locations of
Project Scope : eastern part of UP covering Kanpur, Lucknow, Varanasi,
Allahabad and Gorakhpur.
GTL was to optimize new roll out cell sites in the
network to achieve desired results viz. call origination,
call termination, intra-cell handover, and coverage.
45
Case Study 2
Project Scope :
SoW conferred and accepted by GTL have been as follows:
About the Client : Perform pre swap drive test for all 41 sites.
Hutch is one of the leading gsm operator in India Prepared proficient database for Nokia
having licenses spanning all over India. Hutch is Add and delete Neighbor list.
working with gsm 900 band and wants to expand their Verification of antenna locations and azimuth.
network as the demand grow. So to meet quality and Verifies existing Frequency Plan, recommend the changes
coverage there is need to swap old ZTE system with required.
some new updated system, which can support the Download the database to OMC and verify the dump.
gsm, gprs, edge and easily upgraded to 3G. Perform Drive Tests for sites verification on Swap night.
Hutch selected Nokia as OEM for the core part of their Perform the post swap drive test for all 45 sites.
network. Conduct Acceptance Test Procedure (ATP) with end customer.
Nominal Cell Planning for New 417 sites
Business Challenge : RF survey, LOS survey and Drive Test for New Sites.
Nokia wanted to have resources in the outsourcing MW radio link planning for MW transmission links.
domain increase their strength. As GTL had done lots Provide a solution for the Hutch subscriber’s complaints.
of work with Nokia in India so GTL seems to be Preparation of 2 Mbit/s transmission plan including link capacity
perfectly poised to rise to the need. We became calculations, timeslot allocation and ET planning
partner of choicer for Nokia to perform RF tasks in the Maintain the Network quality by daily monitoring KPI.
swap roll out process. From March 2005 to Till Date
for performed allocated tasks creditably. A few points Value Delivered :
of project: All swaps are mostly conducted at night there is around 6 sites
GSM 900 Networks. swap per day. As soon as swap sites bring on air our drive test
45 sites to be swap from ZTE to Nokia. is ask to conduct the site verification drive test at each cell the
342 New Nokia Ultra BTS test includes database verification, sector swapping, handover
Coverage includes cities and boundaries. testing, neighbor list verification, call termination. After
Network with 19 BSC’s and two switch AXE 10 from finishing the swap now optimization is started on network level,
Nokia.- to meet the KPI daily statistic report are generated with the
CSSR ≥94%, SDCCH Drop ≥2%, Handover success help of Business object and results are discussed with the
rate ≥ 94%, Call drop rate ≤ 2.5%. customer and also suggest the necessary changes.
46
GTL's Network Customer Engagement
Government Of Power Grid
Maharashtra Corp
47
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© Copy right GTL Limited 2008 48
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