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GSM (Global System for Mobile communications: originally from Groupe Special Mobile) is the most popular standard for mobile phones in the world. Its promoter, the GSM Association, estimates that 82% of the global mobile market uses the standard GSM is used by over 3 billion people across more than 212 countries and territories.Its ubiquity makes international roaming very common between mobile phone operators, enabling subscribers to use their phones in many parts of the world. GSM differs from its predecessors in that both signalling and speech channels are digital, and thus is considered a second generation (2G) mobile phone system. This has also meant that data communication was easy to build into the system.

  • In india Vodafone, Airtel, iDEA, BPL use GSM Signaling.
  • Reliance GSM and Tata DOCOMO have launched their GSM services recently based on Dual License acquisition.
  • Cost of instrument is low but service cost is high.
  • Many options are available while choosing handsets

Vodafone Spice Mobile Reliance GSM MTNL Dolphin     Uninor
AT&T idea   Airtel   Aircel    Tata DOCOMO      Etisalat India

CDMA (Code division multiple access) is a channel access method utilized by various radio communication technologies. It should not be confused with the mobile phone standards called cdmaOne and CDMA2000 (which are often referred to as simply "CDMA"), that use CDMA as their underlying channel access methods. One of the basic concepts in data communication is the idea of allowing several transmitters to send information simultaneously over a single communication channel. This allows several users to share a bandwidth of frequencies. This concept is called multiplexing. CDMA employs spread-spectrum technology and a special coding scheme (where each transmitter is assigned a code) to allow multiple users to be multiplexed over the same physical channel. CDMA is a form of "spread-spectrum" signaling, since the modulated coded signal has a much higher data bandwidth than the data being communicated.

  • In India MTNL Garuda, Reliance, MTS, Ping, Tata & Virgin Mobile are CDMA signaling providers.
  • Cost of instrument is high but service cost is less.
  • Not many options are available for choosing handsets.

Tata Indicom     Reliance Mobile MTNL Gaduda BSNL   Virgin Mobile   MTS CDMA   Ping Mobile India

What is 2G ?

2G is current signaling, that is second generation of mobile service. This allows you to make basic phone calls, send SMS, Voice Mails and send receive basic emails.
Existing mobiles are capable of providing this service and service cost is cheap.
2G internet service on mobile is also named as GPRS.

Speed: 10kb/sec

What is 3G?

3G stands for Third Generation of Mobile Service. This will allow you to perform more on your mobile phone.
- 3G Internet service on mobile are also named as EDGE on GSM, HSPA on CDMA. - Global roaming
- Send/receive large email messages
- High-speed Web
- Navigation/maps
- Videoconferencing
- Live Television streaming
- Electronic agenda meeting reminder
- Lots of high bandwidth applications like Live Stock updates, view product and shop instantly, Streaming Radios Service.

You need to buy Mobile handset which is capable of receiving 3G service. These phones are little costly.
You will also need to subscribe to 3G service for high bandwidth service. 3G service is not cheap and requires you to pay cost for high data transfer.

Speed: 144kb/sec-14mb/sec

What is 4G?

4G stands for Fourth Generation of Mobile Service. This is today the fastest speed network you can ever have.
Commercial implementation of 4G standard goes into two categories, WiMAX (Advanced WiFi standards) & LTE (Long Term Evolution)

- Provides Ultra broadband
- This Ultra Boradband connectivity can be also used by Computer, Television & other Internet devices like XBox, PS3.
- 4G USB dongles can be used for high speed bandwidth on Laptops or Desktop computers.
- Once can also use MiFi card like devices to consume 4G services and spread the same connection to multiple devices through local WiFi.

You need to buy Mobile handset which is capable of receiving 4G service. Apple iPhone 4, 4s, 5, Latest iPad & few models of Samsung, HTC are capable of connecting to Fourth Generation Networks.
You will also need to subscribe to 4G service for high bandwidth service. So far Airtel is the only company offering 4G services in India in few circles.

Reliance Industries by Mukesh Ambani is planning to bring cheaper 4G services to India by early 2014.

Speed: 128 Mb/sec - 1 Gb/sec

What is 5G?

5G stands for Fifth Generation of Mobile Service. This is still at conceptual level and expected to be implemented by year 2020.

Speed: 1 Gb/sec-10Gb/sec

 

First Generation(1G)Second Generation(2G)Third Generation(3G)Fourth Generation(4G)Fifth Generation(5G)
TechniquesN/AGPRSEDGE or HSPAWiMAX or LTEN/A
Speed-10Kb/sec144Kb/sec - 14Mb/sec128Mb/sec - 1Gb/sec1Gb/sec-10Gb/sec
Year19811992200220122020

Learn to do programing on Apple iPhone and iPad with iOS API

 

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