what is the role of internet in cell phones (eassy of about 2 pages)
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Answer:
Cell phones have an in-built antenna which is used to send packets of digital information back and forth with cell-phone towers via radio waves. Mobile phones connect to a cell tower in the area, and instead of connecting to another phone it connects to the Internet and can fetch or retrieve data.
Cell phones have an in-built antenna which is used to send packets of digital information back and forth with cell-phone towers via radio waves. Mobile phones connect to a cell tower in the area, and instead of connecting to another phone it connects to the Internet and can fetch or retrieve data.
The voice and data channels of cell phones are separated for maximum efficiency – Mobile Voice goes in one channel and IP or SMS signalling over Mobile Internet in another. The General Packet Radio Service (GPRS) network provides a gateway to the internet through different frequency channels for uploading and downloading.
Now, let’s see what goes behind thfe transfer of data between a wireless device and the Internet. The main component is Radio frequency (RF) energy which can be transmitted throughout a building passing through walls and other objects. This RF energy is transmitted to carry the information between your phone and the Internet. A Modem gets the information onto and off the RF carrier by modulation and demodulation. The information through the RF carrier is sent in packets which have a source and destination address, very similar to the postal delivery service.
A router directs each packet to its destination and also provides a wireless access point to the Internet. A Wireless Access Point enables sharing an Internet connection by letting several computers wirelessly share Internet access through a single connection. The Internet Service Provider administers an Internet access point, for example a cellular radio tower, which may need to be accessible over long distances.