Definition of networks could be given  as an interconnectivity of devises that allow data sharing through a specified medium.

In mobile devices, wireless medium have been used over time and development have also been witnessed as engineers struggle to increase the speed and amount of data transfered at a time.

Also read: introduction to computers 

Below is a list of generational development of mobile (movable) networks.

  1. 0G

It is also known as Mobile radio telephone , are the systems that preceded modern cellular mobile telephony technology.

  • 1-G

Sometimes written as 1G; refers to the first generation of wireless mobile telecommunications. These are the analog telecommunications standards that were introduced in the 1980s.

 It was later replaced by 2G digital telecommunications. 

  • 2G (EDGE/ Gprs)

It is also called EDGE and  2-G is an abbreviation for second-generation wireless telephone technology . 2G cellular telecom networks were commercially launched on the GSM standard in 1991.

 benefits of 2G networks over their predecessors 

the advantages of 2G over 1G and 0G include: 

  1. Phone conversations were digitally encrypted
  2. 2G introduced data services for mobile, starting with SMS text messages & Multi media Messages (MMS).
  3.  All text messages sent over 2G are digitally encrypted, allowing for the transfer of data in such a way that only the intended receiver can receive and read it.

The main difference between the two mobile telephone systems (1G and 2G), is that the radio signals used by 1G networks are analog, while 2G networks are digital.

  • 3G (UMTS)

3G , an accronym for third generation, is the third generation of mobile telecommunications technology. This is based on a set of standards used for mobile devices and mobile telecommunications use services and networks that comply with the International Mobile Telecommunications-2000 (IMT-2000) specifications by the International Telecommunication Union .

 3G can be used in

  1.  wireless voice telephony
  2. mobile Internet access, 
  3. fixed wireless Internet access,
  4. video calls and 
  5. mobile TV .
  • 3.5G (HSPA/ WCMDA)

3.5G is a grouping of disparate mobile telephony and data technologies designed to provide better performance than 3G systems, as an interim step towards deployment of full 4G capability. 

The technology covers:

  • High-Speed Downlink Packet Access
  • 3GPP Long Term Evolution , precursor of LTE Advanced
  • Evolved HSPA

  • 4G(LTE)

4G provides, in addition to the usual voice and other services of 3G, mobile broadband Internet access, for example to laptops with wireless modems , to smartphones , and to other mobile devices. Potential and current applications include amended mobile web access, IP telephony , gaming services, high-definition mobile TV , video conferencing, 3D television , and cloud computing .

  • 4.5G (MIMO)

4.5G is a grouping of disparate mobile telephony and data technologies designed to provide better performance than 4G systems, as an interim step towards deployment of full 5G capability. 

The technology includes:

  1. LTE Advanced
  2. MIMO
  • 5G

5G denotes the next major phase of mobile telecommunications standards beyond the current 4G / IMT-Advanced standards.

Next Generation Mobile Networks Alliance define 5G network requirements as:

  1. Data rates of several tens of Mb/s should be supported for tens of thousands of users.
  2. 1 Gbit/s to be offered, simultaneously to tens of workers on the same office floor.
  3. Several hundreds of thousands of simultaneous connections to be supported for massive sensor deployments.
  4. Spectral efficiency should be significantly enhanced compared to 4G.
  5. Coverage should be improved.
  6. Signalling efficiency enhanced.

5G  with an aproximate speed of 10 Gps means it could be more than 12 times the speed of its predecessor.

It is hoped that it will be rolled out by 2020 to meet the user demands in market. 


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