© 2001 TTG, Inc. 1/15
Comprehensive Network Optimization
© 2001 TTG, Inc. 2/15
• What is Optimisation?Finding an alternative with the most cost effective or highest achievable performance under the given constraines by maximizing desired factors and minimizing undesired ones.
• What happens when we add word: Comprehensive?
What is Optimisation
© 2001 TTG, Inc. 3/15
Word of ‘Comprehensive’Large scope; covering or involving much more.
What are they?
•More KPIs definitions?•Better alarms monitoring?•Better monitoring?•Parameter monitoring?•What to monitor more?•More predictions?•Corellations? and what to corellate?•Mind - set.
Word of ‘Comprehensive
© 2001 TTG, Inc. 4/15
Source: http://www.umtsworld.com
UMTS Network
© 2001 TTG, Inc. 5/15
Measuring network performance
RNC3G
GGSN3G
SGSN
Node B
UTRAN Core NW External NW
E2E service quality,QoE
Network statistics from different counters and interfaces
Network Performance Monitoring& Optimisation
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3G KPIs Architecture
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Paging Success Rate
Some KPIs Example
Drop Call Rate
© 2001 TTG, Inc. 8/15
Some KPIs Example
Call Setup TCH Congestion Rate Handover Success Rate
© TTG, Inc. 2012 9/15
Problem handlingTrouble report Problem data
Planned maintenanceCustomer QosManagement
Isolate and resolveService problems
Service Configuration
Other provider
NetworkMaintenance and restoration
Service affecting faults, Test resultsPlanned maintenanceScheduling notification Identify
Chronic failures
ServiceRedesignNecessary and Appropriate?
ReconfigurationCompletion
No
Yes
Service qualityManagement
Service configuration
Other provider
Problem handling
Service planning/ Development
Network MaintenanceAnd Restoration
Prepare and ProvidePerformance data
Problem data
Planned maintenance
Reconfiguration Request
Trouble report
Trouble clearedPlannedMaintenance
Negotiate/report Service
Design changes
Input Output
Service problem Indication Test request
Flow Chart of Problem Isolation and Measurements
© 2001 TTG, Inc. 10/15
•Many suppliers•Thousands of elements•Thousands of connections•Thousands of KPI’s•Millions of handsets•Millions of Users•Billions of combinations
Network Components
•Coverage•Capacity•Call Reliability•Call Quality•Customer Service
Customer Metrics
•Corelarions with;•Statistic/subscriber measurment•Network Alrmas•Parameter changes
Diagnostic
Σ
The principal difficulty in managing the complex wireless network is that there’s no real-corellations measure of the desired end-result, customer satisfaction. That’s like trying to do speed without a speedometer.
TTG’s Solution•NORTH-I
•SxQM
•FAMAN
Solution
•Customer Perceived Call Quality•Customer Experience Index•Customer Satisfaction Index
Customer KPIs
Dashoards
Dashoards
© 2001 TTG, Inc. 13/15
NORTH-I/DM
TTGNORTH-I
SxQMOSSOSS
OSS
M2000,U2000,Netact,OSS-RC, NetAct, OMCRs, etc...
ABID
Network
Current Statistic files. New OSS log files for parameter changes.When Anomaliy happens collect
NE and relevent NE alarms.Alarm Flag
Parameter ChangedFM
Measurment from Hand Set
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How close are we to measure subscriber experience?
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Wrap Up
• The for optimisation or achieving better network quality is to develop a good database which allows an operator to correlate network statistics, subsriber experiance, call detail records, alarms, external units, cell parameters, etc. using a single platform or platforms that can talk each other. Furthermore, it is also important for such a system to prioritise and alert the operator when potential problems are detected in the network. Continuous monitoring, ceaseless curiosity about what useful information the network can yield, and dynamic performance analysis infrastructures are a must for operators to improve network quality. This is also valid for 2.5G, 3G or any other G’s.
© 2001 TTG, Inc. 16/15
Questions
Also I will be happy to answer your question during the coffee and
cigarette brake.
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