Most of us would be the end of 2G and 3G mobile phones and trusted for generations. But what does that mean and where did it all start? What good is the improvement in the mobile phone to do now? Let us know where it all started to go.
In 1910, Lars Magnus Ericsson phone in the car and while in your car, would be in places where telephone lines are open and leave with a pair of power lines that would connectthe national telephone network. Perhaps this was the birth of mobile telephony, mobile only not yet. A fully automated mobile system, called MTA was developed by Ericsson and released in Sweden in 1956. With a weight of 40 who are not gained much popularity, although it was fully automatic. The updated version called MTB was established nine years later with a weight of 9 kg. was closed at that time was in 1983, there were about 600 customers.
In 1957, a Sovietradio engineer named Leonid Kupriyanovich created a mobile phone called LK-1. That was really moving, and weighs only 3 kg, a vast improvement from their predecessors. It was a small handheld device with an antenna and a remote. You can work up to 20-30 km from the base station and lasted 20 to 30 of the clock. Each station can serve a maximum of 6 clients. As early as next year, it had updated its radio telephone to weigh only 500 grams. At that time peoplefound that the compulsory residence in the area of the cell to a call spread very annoying. To resolve this problem, Amos E. Joel Jr., an engineer at Bell Labs in 1970, invented the automatic hand that can move phones from different ranges of cells without the call never disturbed or loss of the conversation. The commercial success of the first public mobile network was launched in 1971 in Finland. This is 0G mobile network as it had done a little betterThe coverage area of existing networks.
In the 1990's, 2G phone systems were introduced. These were the use of digital transmission circuit switched telephone network, characterized, and faster signal was therefore possible. The frequencies of both 1G and 2G systems used for cutting. This means damnation 1G systems and closed quickly. Until then, large size of the smaller brick phones handheld models 100-200g and this was the norm to date. This waspossible by advanced batteries, electronics, efficient and a higher density of cell sites. 2G phones presents a very popular way to communicate, ie SMS text messages. This was the preferred model of communication and is currently the preferred way for young people. First download media in 2G mobile phones were introduced. Ringtones are downloaded and paid. Mobile advertising has also been introduced if it is used for sending SMS advertising and news briefsmessages.
They soon started projects for the development of 3G systems. This process is to standardize the requirements (2 Mbit / s maximum data rate in the interior, 384 k / bit / s outdoors, for example), but not the technology. The first attempt, the network launched pre-commercial 3G in Japan, was developed by NTT DoCoMo in Tokyo in May 2001 and the first commercial 3G network in the well of the same in Japan 1 Launched in October 2001. In late 2007 some 300 million subscribers on 3G networksexisted. The revenue generated by the 3G network was about U.S. $ 120 million in 2007. The things that makes this system the overwhelming success rate of file transfers and Internet downloads is much faster than 2G systems. It connects to the Internet twice as fast on the 3G system. This has made possible an entirely new experience, like photos, videos, blogs, etc. can access and enjoy better. So the 3G systems and services in a hit among mobile phone users than 2G systems.
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