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  1. A SEMINAR ON 2G & 3G Presented by- VAIBHAV SHARMA 12256 ECE-II

  2. COMPANY’S OVERVIEW Company name :- BSNL ,Narnaul,distt. Mahendergarh D.T.O. :- Mr.IshwarKumar Yadav The BSNL of Narnaul, Distt. Mahendergarh is placed first in Haryana State due to its Technical machines,Trainers & cleanliness It was also awarded from the C.M. of Haryana for its first position.


  4. 2G 2g refers to second generation wireless Telephone technology .Second generation Cellular n/w were launched on GSM Standard in Finland in 1991. After 2G new technologies such as 2.5G, 2.75G, 3G, 4G & 5G. 2G n/w are still Used in many parts of the world.


  6. ADVANTAGES 1.Lower power emission. 2.Digital data services such as SMS & emails. 3. Greatly reduced fraud. 4. Enhanced privacy.

  7. DISADVANTAGES Weaker digital signal. Angular decay curve. Reduced range of sound.

  8. 2.5G 1. It is used to describe 2G system which have implemented a packet switched domain in addition to the surface switched Domain. 2. The first major step in evaluation of GSM networks to 3G With the GPRS . 3. The combination of these is known as 2.5G. 4. It includes the services like wireless application protocol(WAP) , Multimedia messaging servicing (MMS) and for internet communication services

  9. 3G 3G refers to third generation.It is a generation of standard for mobile phone and mobile Telecommunication services .The data rate of 3G Is atleast 200kbps.The main feature Of 3G are: Wireless voice telepnone. Mobile internet. Video calls. Mobile T.V

  10. HISTORY The first pre-commercial 3G network was launched By NTT Docomo in Japan. The first commercial launch Of 3G was also by NTT Docomo in Japan on 1 oct 2001 The first commercial network in Europe was opened for business by Telenor in dec 2001. 3G launched in India by govt. owned MTNL In Delhi and later in Mumbai.TataDocomo Was the first private sector service who launched 3G services on Nov 2010.

  11. 3G services in Asia • CDMA (1xEV-DO) • Korea: SKT, KTF • Japan: AU (KDDI) • WCDMA / UMTS • Japan: NTT DoCoMo, Vodafone KK • Australia: 3 Hutchinson • Hong Kong: 3 Hutchinson

  12. Why 3G? • Higher bandwidth enables a range of new applications!! • For the consumer • Video streaming, TV broadcast • Video calls, video clips – news, music, sports • Enhanced gaming, chat, location services… • For business • High speed teleworking / VPN access • Sales force automation • Video conferencing • Real-time financial information

  13. 3.5G 3.5G or HSDPA (High Speed Downlink Packet Access) is an enhanced version . It comprises the technologies that improve the Air Interface and increase the spectral efficiency, to support data rates of the order of 30 Mbps. 3.5G introduces many new features that will enhance the UMTS technology in future. These include: Adaptive Modulation and Coding Fast Scheduling Backward compatibility with 3G Enhanced Air interface

  14. APPLICATIONS 1.Mobile T.V 2. Video on demand 3. Video conferencing 4. Tele-medicine. 5. Location based services

  15. 4G • Also known as ‘Mobile Broadband everywhere’ • ‘MAGIC’ • 1. Mobile Multimedia Communication • 2. Anywhere, Anytime with Anyone • 3. Global Mobility Support • 4. Integrated Wireless Solution • 5. Customized Personal Service • According to 4G Mobile Forum, by 2008 over $400 • billion would be invested in 4G mobile projects. • In India, communication Minister Mr. DayanidhiMaran, • has announced a national centre of excellence to work • in 4G arena.

  16. 4G: Data rate Facts • Transmission at 20 Mbps • 2000 times faster than mobile data rates • 10 times faster than top transmission rates planned in final build out of 3G broadband mobile • 10-20 times faster than standard ADSL services. • Companies developing 4G technology • Cellular phone companies: Alcatel, Nortel, Motorola, • IT Companies: Hughes,HP,LG Electronics

  17. Wireless Access Evolution Subscribers • Broadband • Network Simplification • Cost of Ownership • Broadband • New Services • Efficiency • Voice Quality • Portability • Capacity • Coverage • Mobility 2G 4G 3G 1G Voice Broadband

  18. B T S B T S MSC VLR B T S VLR GSM System Architecture OMC ( UM Interface HLR PSTN ISDN Data Networks BSC A Interface A-bis interface Air interface

  19. OMC Other MSC VLR VLR Um Abis BTS A MS AUC GMSC HLR BSC BTS Abis BSS Other Networks (PSTN,PSPDN) EIR OtherMSC GSM Network Architecture

  20. GSM System Architecture-I • Mobile Station (MS) Mobile Equipment (ME) Subscriber Identity Module (SIM) • Base Station Subsystem (BSS) Base Transceiver Station (BTS) Base Station Controller (BSC) • Network Switching Subsystem(NSS) Mobile Switching Center (MSC) Home Location Register (HLR) Visitor Location Register (VLR) Authentication Center (AUC) Equipment Identity Register (EIR)

  21. THANKS