Sunday, July 24, 2011

Generation Cell Phones

Generation I 
Stepping on the 1973's, Martin Cooper, a lady who came from Motorola Corp. discovered the first cell phone and he introduced its findings to the general community on April 3, 1973. Yes, the first generation of phones can be also called 1G. 1-G is the first phone that actually (in the sense as we see today or can be taken anywhere). The invention is able to change the world forever, the phone weighs 30 ounces or about 800 grams. However, the technology used 1-G mobile phones are still analog, or better known as AMPS. AMPS technology using a frequency of about 825 MHz s / d operated at 894 Mhz 800 Mhz band. But it can only be used in one area or region, as it still uses technology that is analog. Weighing 800 grams, it is not wrong if ukurang 1G phones are still too large to use hand-held manuasi, and that's one of the weaknesses of the 1G phones. Because these phones require power to run it and still have poor battery performance, then this causes a large space needed to install the battery and automatic cell size becomes large. Besides the generation 1-G still has problems with mobility users. When making a call, the user mobility is limited to coverage area of ​​cellular phones.

Generation II 
second generation or 2G began to emerge. 2G technology in the United States has brought the CDMA technology, whereas in continental Europe and brought the GSM technology. GSM technology is a technology that uses a frequency standard at 900 Mhz and 1800 Mhz frequencies, using these frequencies, then the GSM technology has a larger customer capacity. 2G-generation mobile phone is no longer using analog signals such as used in the first generation, analog signal has been replaced using a digital signal. By using a digital signal then able to complete the generation 2G phones with voicemail, call waiting, and SMS. 2G-generation mobile phone uses a digital chip technology, then make the size of mobile phones become smaller and lighter. In addition to the smaller size and also due to the need for a smaller battery. Another advantage of the 2G-generation mobile radio signals is lower, thus reducing the effects of radiation that can damage the health of mobile phone users.

Generation III 
3G technology generation (three G), circa 2009 3G technology is very popular and likely to date. Because the 3G generation provides more facilities and many functions were added. Generation 3G also allows network operators to provide users of their services a wider range, internet, video calls are high-tech. In 3G there are also third-generation standard for the world of telecommunications, including EDGE (Enhance Datarates for GSM Evolution), Wideband-CDMA, and CDMA 2000. Perhaps because of its features are already carrying a high-tech generation of 3G then it costs a relatively more expensive, besides the lack of network coverage to all corners of the area because the technology is still new.

Generation IV 
The next generation is the fourth generation (Fourt Generation) or 4G. Generation 4G is a system of phones where this system uses infrastructure solutions that utilize wireless technology. Wirelees technology is already there before, including WiBro (wireless broadband), 802.16e, CDMA, wireless LAN, Bluetooth, and others are possible. System used by the 4G generation is based on the heterogeneity of IP networks, this allows mobile users to use a diverse generation 4G systems whenever and wherever they want. Generation 4G also provides users with access to high speed, high volume, good quality, global reach, and flexibility to explore a variety of different technologies. Finally, the generation 4G provides fast data delivery service to accommodate a variety of applications such as multimedia, video conferencing, on-line games and others.And no longer will appear mengkin generations of phones, maybe 5G, 6G, 7G. Either let alone a feature that will be offered, we just wait presence.

In the cellular world, many mobile applications that can be used to communicate, most of them in the interest of the customer is the sms application. SMS applications developed along with the popularity of SMS itself. SMS application was first developed by the network operator as part of a network application services. However with the availability of APIs (Application Programming Interface) to create an SMS application programming development of SMS applications from third-party developers. Here is the history of the development of an SMS application that starts from the construction of the first generation SMS Center developed telecommunications company CMG on GSM networks in Europe.

1. Voice-mail notifications and SMS Mobile Terminate the application is voice-mail arrival notification and message delivery in one direction from the operator to the mobile device users.2. SMS Mobile originate, is the ability of a two-way SMS communication, the customer can send SMS messages to other subscribers. Launch these applications increase the use of SMS by 25% from the beginning.3. E-mail notifications, e-mail service that includes a cell phone number so that customers will receive a notification e-mail when it comes to customer accounts. These services increase the use of SMS by 20%.4. Services Information Services, providing general information that is sent via an SMS message, which contains information on news, travel, weather, sports news, horoscopes, etc.. Because of the complexity in the construction and service provider's server settings, the service is growing relatively slowly and only increase the volume of SMS usage by 10%. Here is information services from the most frequently used by customers: information telephone number, mobile chat, logos, ringing tones, humor, horoscope, stock, TV info, music info, weather info, bank info, current events5. Business Partner Program. Network operators begin to open up business opportunities to develop the SMS Center was built based on specifications and needs of a company. SMS Center was built to help the business processes and communications who want to build companies using SMS. SMS Center was built was originally intended to develop communication networks and the business of the enterprise network operators. This service can increase the volume of SMS to 20%.6. SMS Center Second Generation. SMS Center is built on the need for devices and applications that can accommodate an SMS with the increase in traffic volume of SMS. Hopefully with a new generation SMS Center SMS service reliability and quality can be maintained and even increased. At this stage the proven quality of service has increased and the volume of SMS usage increased 10%.7. SMS Internetworking is a collaboration between operators that allows subscribers of another network system can exchange mail messages, as well as customers of one network can access the voice-mail subscribers from other networks. Previous SMS can only be sent to other customers who are in one network. This service has been very helpful and capable melonjakkan SMS volume by 50%.8. SMS to Pre-Pay customers. With this service is expected to prepaid customers can also enjoy the services of SMS, because previously only the post-paid subscribers are able to use SMS. Launch of this service makes use of SMS volumes surged 100%, and this was expected because the pre-paid customers in general are a customer from a very young age enjoyed the service for exchanging SMS. For example, on the Vodafone network in Britain, even though the number of post-paid subscribers more than prepaid subscribers, prepaid customers using SMS service 2 times more often than the postpaid customers.9. Predictive Text Input Phones, is contained in the mobile phone application that contains the customer's algorithms can predict the words that will be used to construct a sentence in an SMS message. This application is very helpful because the use of person to person SMS still dominates the use of SMS, and for that customers need applications that can simplify and accelerate the process of writing a message using the buttons phone. Launch these applications increase 25% by volume of SMS usage.10. Hardware development support messaging service. Hardware support such as a QWERTY keyboard that can be mounted on a mobile phone for typing SMS messages quickly can increase the volume of SMS services to 15%.SMS application development has been through the stages of the above makes the SMS is very popular and popular today. These stages are believed not to be stopped and will continue to evolve with the development of wireless technology and 3G is still put the SMS as the main service.

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