1G mobile system

The 1G mobile system is introduced in the early 1980s. The 1G mobile system was based on analog cellular Technology. This network was mainly designed for voice calls no consideration of Data Services. The major drawback of the 1G system were its low capacity, poor voice links and no security.

2G mobile system

The 2G network was the first digital cellular system introduced in 1990. The 2G system was based on GSM Technology. 2G was offering improved sound quality, better security, SMS, Voicemail and fax services.

2.5G mobile system

 It is the enhanced version of 2G. It offers services like MMS, sending pictures through email.

3G mobile system

3G Technology adds multimedia facilities to the 2G phone by allowing video, audio and graphics applications. With the invention of 3G watching online videos and video conferencing become a reality. It has the capacity of higher data rates and it opens the door to many internet style applications. The 3G mobile system is also known as the universal mobile telecommunication system (UMTS).

4G mobile system

4G is an enhanced version of 3G it is based on packet switching. It is able to support faster transmission. It provides data rate up to 100 MBPS. It is wireless access technology.

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WLL

WLL stands for wireless local loop and it is basically used to provide a telephone connection to the home. WLL is used for wireless communication links that deliver telephonic services or broadband services to customers it is mostly used in developing countries where cable infrastructure is either expensive or speed is not fast. In other words, WLL is a system that connects subscribers to the public switched Telephone Network (PSTN) using radio signals as a substitute for other connecting media.

GPRS

GPRS stands for General Packet Radio Service. GPRS is used for wireless communication using a mobile device with this service you can access the internet, sends emails, and so on.

You can also watch this video

You can also watch this video

Wireless Communication

Wireless communication means the method of transferring information between computing devices without using any physical connection. For example- when we try to access any agency database server from our mobile phone without using any physical connection. Not all wireless technologies are mobile technology.  In wireless communication device is continuously connected to the base network.

Mobile Communication

Mobile is a device that is portable. Mobile communication is based on a cellular network. A cellular network is nothing but a radio network. A mobile device may be a PDA, smartphone, laptop, and any other device that allows the user to complete computing tasks without connection with any other wireless network. In this communication, the device is not continuously connected to the base or central network.

Mobile Communication Technologies

GSM: GSM stands for a global system for mobile communication which is one of the leading digital cellular systems. The GSM standard for Digital cell phones was established in Europe in the mid 9080s. It becomes the International standard in Europe, Australia, and much of Asia and Africa. Cell phones users can buy one phone that will work anywhere where the standard is supported. To connect to the specific service providers in different countries, GSM users simply switch SIM cards. They stores all the connections and identification numbers to access a particular wireless service provider.

CDMA: CDMA stands for code division multiple access. CDMA is designed by Qualcomm in the United States. It is used second and third generation of the wireless communication. It is a digital cellular technology that uses spread spectrum techniques. Because of spread spectrum  is it it maintains high security and noise reduction. In this techniques several transmitters can send information simultaneously over a single communication channel.