Topics covered in this presentation 1.WHAT IS OSS ? 2.ELEMENTS OF OSS 3. NEED FOR OSS 4. FUNCTIONS COVERED BY OSS

1. PRESENTATION ON Operating
Support Subsystem (OSS)
BY:
Naveen Jakhar, ITS
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Agenda
1. WHAT IS OSS ?
2. ELEMENTS OF OSS
3. NEED FOR OSS
4. FUNCTIONS COVERED BY OSS

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DEFINING OSS
Stands for OPERATION SUPPORT SYSTEM.
Set of systems connected together and to other
network element(like BSS, NSS etc.) of a TSP.
It is a separate centralized system which monitors
and controls the network.
If we take taxi analogy then:
• Taxi as TSP
• Engine as Network
• Dashboard as OSS

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OSS is connected to network elements via
standardized interfaces like Ethernet etc.
OSS can be understood as combination of two entities
1.NMC(Network Mgmt. Center)
2.OMC(Operation & Maintenance center)
Both can be installed at same physical location or at
different sites.

5. GSM NETWORK ARCHITECTURE
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Elements of OSS
There are 4 key elements of OSS
1.Processes : the sequence of events.
2.Data : the information that is acted upon.
3.Applications : the components that implement
processes to manage data.
4.Technology : how we implement the application.

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NEED FOR OSS
In today’s multivendor and multiservice scenario
OSS works as mediator & provides real time end
to end overview and control of information
remotely.
Customer tools like ERP,CRM etc. it is also
possible to upgrade OSS as per changing
conditions and requirements.
Real time supervision to maintain QoS.
Billing and charging.

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OSS touches the following aspects of telecom
network :
• Plan : by engineering team
• Build : work force mgmt., order mgmt., inventry
mgmt. etc.
• Operate : alarms, troubleshooting, fault mgmt.
• Optimize :performance mgmt. for exponentially
growing traffic

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1. Configuration Management
2. Fault Management
3. Performance Management
FUNCTIONS OF OSS

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1. Configuration Management
Cell level planning and operation.
Planning Major future changes.
Implement new cells or other
parameters in network if needed.
We can take example of BTS equipment
management

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BTS Equipment Management
Configuration, Reconfiguration, enabling &
disabling the complete or selected parts of
BTS .
BTS software loading, checking information
about stored package.
BTS hardware dimensioning and planning.
BTS alarm management.

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2. Fault Management
Faults are reported by various types of
alarms:
Critical: Immediate action needed.
Major: action to be taken as soon as
possible.
Minor: observe the situation or take action
when there is time.
Warning: take action during routine
maintenance.

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2. Performance Management
 By data collection and processing .
 By preparing statistical reports.
 By maintaining KPI(Key Performance
Indicators) mandated by TRAI for best
QoS.

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2. Some QoS Parameters
 BTS down time report: it shows BTSs
accumulated downtime(<=2%as per TRAI)
BTS Sector report: it shows
1.Call set up success rate(>=95%as per
TRAI).
2.SDCCH congestion(<=1%as per TRAI).
3.TCH congestion(<=2%as per TRAI).

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2. Some QoS Parameters
4. Call drop rate(<=2%as per TRAI).
 MSC traffic report
PoI congestion(<=0.5%as per TRAI)

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THANK YOU