 |
1.ZERO GENERATION(0G)
Early generation (0G) or mobile radio telephone is the beginning of modern mobile phone technology, which uses a special radio wave network with limited network coverage and to connect with ordinary public telephone network. Ordinary cars and trucks in order to communicate. Mobile radio telephone is known by the trade name WCCs (Wireline Common Carriers), RCCs (Radio Common Carriers), and two-way radio dealers. In principle, such as communication networks Police or Taxi (walkie-talkie), only mobile radio telephone has a separate phone number and connect to the network of its own.
The Advantages Zero Generation (0G)
0 G technology capabilities can serve only to voice communications only and represents the beginning of mobile communication technologies (mobile) that are implemented
The Weakness of Zero Technology(0G)
The method of transmission is still half-duplex while the development supports full-duplex, number of customers and network coverage is very limited, do not support data communication, therefore generaasi 0G can not last long
2. FIRST GENERATION(1G)
The first generation or 1G is the first mobile phone technology that was introduced in the '80s and are still using analog systems. The first generation uses communication technique called Frequency Division Multiple Access (FDMA). This technique makes it possible to divide the frequency allocation in a cell for use of each subscriber in the cell, so that each customer during a conversation has its own frequency.
The Advantages of First Generation
1 G technology capabilities can serve only to voice communications alone can not serve in high-speed data communications and large.
The Weakness of First Generation
Traffic capacity is small, the number of subscribers that can fit in one little cell, the wasteful use of frequency spectrum for a single user using a single frequency channel, and the sound is not clear.
3. SECOND GENERATION(2G)
Second-generation technology come to the market because of market demands and the need for better quality. Generation 2G already using digital technology. This generation uses the mechanism of Time Division Multiple Access (TDMA) and Code Division Multiple Access (CDMA) communication techniques.
The Advantages of Second Generation
The second generation not only used for voice communications, are also able to SMS (Short Message Service is a bidirectional service for sending short messages of 160 characters), voice mail, call waiting, and transfer data with a maximum speed of 9600 bps (bits per second). The resulting sound became more clear, because the digital-based, then before sending analog voice signals converted into digital signals. Power needed to signal a bit so as to save battery, so that handsets can be used longer and battery size can be smaller.
The Weakness Second Generation
Data transfer speeds are still low, is not efficient for low traffic, network coverage is still limited and very dependent on the presence of BTS (cell tower).
4. 2.5 GENERATION
2.5G technology is an increase of 2G technology, especially in the GSM base platform has undergone improvements, particularly for data applications. For the GSM-based 2.5G technology implemented in GPRS (General Packet Radio Services) and Widen, while CDMA is implemented based on CDMA2000 1x.
5. THIRD GENERATION(3G)
Third generation technology (3G Third Generation) was developed by a group of recognized experts and business people who are competent in the field of wireless technology in the world. 3G (Third Generation) as a function of technology has a data transfer rate of 144 kbps on the user speed of 100 km / h, has a data transfer speed of 384 kbps at walking pace, has a data transfer speed of 2 Mbps to stationary users.
The Advantages Third Generation
It has a fast data transfer speeds (144kbps-2Mbps), so it can serve broadband data services such as internet, video on demand, music on demand, games on demand, and other on demand which allows us to choose a program of music, video, or games as easy as selecting channels on TV. Speeds as high as it is also capable of serving video conferencing and other video streaming.
The Weakness Third Generation
Requires Power Control and yet insufficient data transfer speed in serving multimedia services that require a capable speed.
6. 3.5 GENERATION
Technology also known as 3.5G or Super 3G is an improvement from 3G technologies, especially in improving the data transfer speed over 3G technology (> 2 Mbps) so that it can serve multimedia communications such as Internet access and video sharing.
7. FOURTH GENERATION(4G)
4G is the short name for fourth-generation wireless, the stage of broadband mobile communications that will supercede the third generation (3G ).
Carriers that use orthogonal frequency-division multiplexing (OFDM) instead of time division multiple access (TDMA) or code division multiple access (CDMA) are increasingly marketing their services as being 4G, even when their data speeds are not as fast as the International Telecommunication Union (ITU) specifies. According to the ITU, a 4G network requires a mobile device to be able to exchange data at 100 Mbit/sec. A 3G network, on the other hand, can offer data speeds as slow as 3.84 Mbit/sec. In this generation there are two technology. They are Wimax(Worldwide Interoperability for Microwave Access) and LTE(Long Term Evolution). I will tell about them in the next time.
0 comments:
Post a Comment