Cellular Communication
Cellular Mobile Communication systems are wireless systems that divide a given geographical area into cells and use a large number of transmitters to communicate wirelessly within those cells. They provide mobility to the user within the cell, and when he/she moves from one cell to another, a ‘hand-off’ mechanism takes care of continuous connectivity. Therefore cellular communication ensures connectivity with a single network over a large geographical area.
Evolution of Cellular Radio Communication
Over the years, we have seen remarkable growth of cellular communication over radio. With ever increasing subscriber base and limited radio resource, providing quality telecom services became difficult. These issues led mobile service providers to research into technologies and improve the quality of service and be able to support more users in their systems. Therefore Cellular communication has been continuously evolving into newer forms. Here’s a brief look into its journey from 1G to LTE.
North American Cellular
Developed in the 1970’s, deployed in the early 1980’sInitially operated in 800 MHz frequency range, then in 1900 MHz range
GSM (2G)
Newer than North American Cellular
All Digital Standard recommended by ETSI for Europe.
Adapted in other countries.
Operates in 900 MHz range
GPRS (2.5G)
Is a packet based data service for mobile phones
56-114 kbps
UMTS (3G)
3GPP standards
Data rates starts from 384 kbps and runs into Mbps based on the technology
LTE (4G)
Based on an all-IP packet switched network.
Peak data rates of up to approximately 100 Mbps
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