Mobile Technology

MOBILE TECHNOLOGY
A mobile or a cellular phone as it is called is a long range, portable electronic device which is used for mobile communication. Modern mobile phones can be used for various applications like sending text messages, email, MMS and for sending and receiving photos and videos via GPRS, infrared or bluetooth.

The networks are significantly varied from provider to provider. All communicate through electromagnetic waves with a cell site base station and its antennas are usually mounted on a tower, pole or a building. The phones have a low power transceiver that transmits voice and data to the nearest cell sites, usually not more than 5 to 8 miles away. When the mobile phone or the data device is turned on, it registers with the mobile telephone exchange or switch with its unique identifiers, and is then alerted by a mobile switch when there is an incoming telephone call. The handset constantly searches for a strongest signal to receive from the surrounding base stations.

The dialogue between the handset and the cell site is a stream of digital data that includes digitalized audio. The technology that achieves this depends on the system which the mobile phone operator has adapted to. Some technologies include AMPS for analog, and D-AMPS, CDMA2000, GSM, GPRS, EV-DO, and UMTS for digital communications. Each network operator has a unique radio frequency band.

Mobile working means delivering services in the field – in people’s homes or other convenient locations. It means taking services to the customer, rather than the customer having to visit offices to access services.