Have you ever think how people communicate and keep contact with their friends and family in a long distance long time ago?? Its quite difficult right. A long time ago, people send letter by postmen. Even, we have a postmen nowadays, the message that we want to send to people are not deliver immediately. So, it begins to develop radio telephone technology.
Radiophones have a varied history going back to Reginald Fessenden's invention through the second world war with military use of radio telephony links and civil services in the 1950s, while hand-held mobile radio devices have been available since 1973. The history of mobile phone can be divided into generations. They are first generation, second generation, third generation and current.
First Generation :- Celular Network
It is lounched in Japan in 1979 by NTT. The initial launch network covered the full metropolitan area of Tokyo's over 20 million inhabitants with a cellular network of 23 base stations. Within five years, the NTT network had been expanded to cover the whole population of Japan and became the first nation-wide 1G network.Cellular systems required several leaps of technology, including handover, which allowed a conversation to continue as a mobile phone traveled from cell to cell. This system included variable transmission power in both the base stations and the telephones, which allowed range and cell size to vary.The evidence of this growth can still be seen in the many older, tall cell site towers with no antennae on the upper parts of their towers.
Second Generation :- Digital NetworkMobile Phones second generations (2G) emerged in 1990s by using the
GSM (Global System for Mobile Communication) standard. It is difference from the previous generation in their use of digital transmission instead of analog transmission, and also by the introduction of advanced and fast phone-to-network signaling. This era saw the advantage of prepaid
handphone. In addition, this generation also introduced the use of
SMS. The first machine-generated
SMS message was sent in the UK on 3 December 1992. The first person-to-person
SMS text message was sent in Finland in 1993. 2G also introduced the ability to access media content on mobile phones, when
Radiolinja (now Elisa) in Finland introduced the
downloadable ring tone as paid content. Finland was also the first country where advertising appeared on the mobile phone when a free daily news headline service on
SMS text messaging was launched in 2000, sponsored by advertising.
Starting from this generation,
handphones becoming a needs to everyone.
Third Generation :- High Speed IP Data Network
Third Generation (3G) has more function then 2G. The handphones become more flexible. They started to have a camera, video, music, Blue tooth and GPRS.
The first pre-commercial trial network with 3G was launched by NTT DoCoMo in Japan in the Tokyo region in May 2001. NTT DoCoMo launched the first commercial 3G network on October 1, 2001, using the WCDMA technology. In 2002 the first 3G networks on the rival CDMA2000 1xEV-DO technology were launched by SK Telecom and KTF in South Korea, and Monet in the USA. Monet has since gone bankrupt. By the end of 2002, the second WCDMA network was launched in Japan by Vodafone KK (now Softbank). European launches of 3G were in Italy and the UK by the Three/Hutchison group, on WCDMA. 2003 saw a further 8 commercial launches of 3G, six more on WCDMA and two more on the EV-DO standard.
The high connection speeds of 3G technology enabled a transformation in the industry: for the first time, media streaming of radio (and even television) content to 3G handsets became possible, with companies such as Real Networks, and Disney among the early pioneers in this type of offering. By the end of 2007 it had become clear that 3G was a reality and was clearly on the path to become a profitable venture.
Current Generation :- Broadband
Now, we can use our handphone to surf Internet. In Malaysia, we have Maxis, Celcom, Digi, Umobile, Xpax, Hotlink. Days to days, there are many Networks of mobile phone. Not only mobile phone but also for broadband network.
Whatever the
handphones comes from, it is from our God Allah
swt who have give us the idea to create this variety function of
handphones.
