seminar on industrial training final (1)
TRANSCRIPT
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Seminar on Industrial Training
inAdvanced GSM Technique
atBharti Airtel Ltd.
Presented By:SUMIT KAUSHIK
EC-07-119
E&C
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Airtel was Established in 1985.
BhartiAirtelLimited was formerly known
as BhartiTele- VenturesLTD (BTVL).
Bharti Airtel is the worlds 3rd largest - single
country mobile operator.
Fifth largest telecom operator in the world in
terms of subscriber base.
About Bharti Airtel LTD.
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Bharti Airtel has more than 137 million subscriptions as
of June 2010.
Bharti has ventures with:
Bharti Infratel Limited
Bharti Realty Limited
Bharti Walmart
Bharti Retail
Indus Towers
About Bharti Airtel LTD.
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WHAT IS GSM ?
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HistoryofGSM
In 1982,CEPT created the Group Special Mobile
(GSM).
In 1989, GSM responsibility was transferred to the
European Telecommunications Standards Institute(ETSI)
Full set of specifications phase-I became available in
1990
First GSM network was launched in 1991 by Radio
linja in Finland
http://en.wikipedia.org/wiki/GSM_Associationhttp://en.wikipedia.org/wiki/European_Telecommunications_Standards_Institutehttp://en.wikipedia.org/wiki/Radiolinjahttp://en.wikipedia.org/wiki/Radiolinjahttp://en.wikipedia.org/wiki/Finlandhttp://en.wikipedia.org/wiki/Finlandhttp://en.wikipedia.org/wiki/Radiolinjahttp://en.wikipedia.org/wiki/Radiolinjahttp://en.wikipedia.org/wiki/European_Telecommunications_Standards_Institutehttp://en.wikipedia.org/wiki/GSM_Association -
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GSM in India
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GSM Services
Tele-services
Bearer or Data Services
Supplementary services
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TELE SERVICES
Telecommunication services that enable voice
communication via mobile phones
Offered services
- Mobile telephony
- Emergency calling
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BEARER SERVICES
Include various data services for information
transfer between GSM and other networks like
PSTN, ISDN etc at rates from 300 to 9600 bps
Short Message Service (SMS)
up to 160 character alphanumeric data
transmission to/from the mobile terminal
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Call Waiting
Call Hold
Call Forwarding
Barring of outgoing calls
Barring of incoming calls
Multi Party Call Conferencing
CUG(Closed user group)
SupplementaryServices
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Gsm Architecture
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Mobile Station (MS)
The Mobile Station is made up of two entities:
1. Mobile Equipment (ME)
2. Subscriber Identity Module (SIM)
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Base Station Subsystem(BSS)
Base Station Subsystem is composed of two parts that
communicate across the standardized Abis interfaceallowing operation between components made by
different suppliers.
1. Base Transceiver Station (BTS)
2. Base Station Controller (BSC)
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Base Transceiver Station (BTS)
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Base Station Controller (BSC)
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Mobile Switching Center (MSC)
Home Location Register (HLR)
Visitor Location Register (VLR)
Authentication Center (AUC)
Network Switching Subsystem(NSS)
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Mobile Subscriber Identities in GSM
International Mobile Equipment Identity(IMEI
InternationalMobile Subscriber Identity(IMSI
Temporary Mobile Subscriber Identity(TMSI)
The Mobile Station Roaming Number(MSRN)
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Authentication & Encryption
Authentication
Ciphering
Ki(individual subscriber authentication key)
RAND
A3 Algorithm
A5 Algorithm
Kc
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ControlChannel
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Broadcast Channels (BCH)
Broadcast Control Channel (BCCH) Frequency Correction Channel (FCCH)
Synchronization Channel (SCH)
Common Control Channels (CCCH)
Paging Channel (PCH)
Random Access Channel (RACH)
Access Grant Channel (AGCH)
Dedicated Control Channels (DCCH) Stand alone Dedicated Control Channel (SDCCH)
Slow Associated Control Channel (SACCH)
Fast Associated Control Channel (FACCH)
Control Channels
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Advantages of GSM over Analog system
Reduced RF transmission power and longer battery life.
International roaming capability.
Better security against fraud (through terminal
validation and user authentication).
Encryption capability for information security and
privacy.
Compatibility with ISDN, leading to wider range of
services
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GSM Applications
Mobile telephony
Telemetry System
- Automatic meter reading
- Toll Collection
- Remote control and fault reporting of DG sets
Value Added Services
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Q U E R I E S