These are the different generations of wireless technologies,that are used in mobile phones all around the globe. There are overall 5 different generations of wireless technologies-
1) Mobile Radio Telephone
2) 1G
3) 2G
4) 3G
5) 4G
Mobile Radio Telephone-
This is the oldest generation of wireless technology. It was introduced in 1960s. Since they were predecessors to the cellular era of technology, they are also known as pre-cellular systems. These mobile phones were large(some even the size of briefcases) in size and also were very inconvenient to transport. They were usually fixed in trucks or cars with the head in front. These were different from radio in the sense that these had their own personal numbers. This technology has become very obsolete and is not used in present age.
1G-
1G is the successor to Mobile Radio telephone. This is known as the first generation of Wireless telephone technology. This was introduced firstly in the 1980s in Tokyo, Japan and within few years, it became popular in the whole country.
The main difference between 1G and 2G(GSM) is that 1G uses analog signals while 2G employs the use of digital signals in transmitting audio.
2G-
One step ahead of 1G, 2G uses narrow band wireless digital network. It allows more clarity of voice than 1G which used analogue signals. Both these technologies were based upon circuit switching. 2G deals with voice calls only and allows only text messaging, also known as SMS. 2G allowed roaming facility which was not possible with 1G and having a phone with 2G; one could go abroad and still connect to folks back in the country, albeit with some limitations. All the 2G networks that include GSM, CDMA and DAMPS were launched in the country in the early 1990’s and they were the first digital cellular systems.
3G-
The 3G was introduced to overcome the hurdles that 2G could not cross. 3G uses both circuit and packet switching technologies and makes use of wide band wireless networks that allows more voice clarity and it looks as if the person we are talking to is sitting next to us. Packet Switching is the technology used for sending data in 3G. Interpretation of voice calls is done through Packet switching. 3G allowed unfettered global roaming. In addition to unmatched voice clarity and faster downloads such as musics, videos and games, there are some more features that can be enjoyed such as internet browsing, mobile TV, video conferencing, video calls, Multi Media Messaging (MMS), Mobile Gaming etc.
4G-
In telecommunications, 4G is the fourth generation of cellular wireless standards. It is a successor to the 3G and 2G families of standards. In 2009, the ITU-R organization specified the IMT-Advanced(International Mobile Telecommunications Advanced) requirements for 4G standards, setting peak speed requirements for 4G service at 100 Mbit/s for high mobility communication (such as from trains and cars) and 1 Gbit/s for low mobility communication (such as pedestrians and stationary users).
A 4G system is expected to provide a comprehensive and secure all-IP based mobile broadband solution to laptop computer wireless modems, smartphones, and other mobile devices. Facilities such as ultra-broadband Internet access, IP telephony, gaming services, and streamed multimedia may be provided to users.
1) Mobile Radio Telephone
2) 1G
3) 2G
4) 3G
5) 4G
Mobile Radio Telephone-
1G-
1G is the successor to Mobile Radio telephone. This is known as the first generation of Wireless telephone technology. This was introduced firstly in the 1980s in Tokyo, Japan and within few years, it became popular in the whole country.
The main difference between 1G and 2G(GSM) is that 1G uses analog signals while 2G employs the use of digital signals in transmitting audio.
2G-
3G-
4G-
A 4G system is expected to provide a comprehensive and secure all-IP based mobile broadband solution to laptop computer wireless modems, smartphones, and other mobile devices. Facilities such as ultra-broadband Internet access, IP telephony, gaming services, and streamed multimedia may be provided to users.
