Cell Characteristics

The Basic Union In The System
defined as the area where radio coverage is given by one base station.
A cell has one or several frequencies, depending on traffic load.
Frequencies are reused, but not used in neighboring cells due to interference.
Each served by its own antenna
Served by base station consisting of transmitter, receiver, and control unit
Use multiple low-power transmitters
Cell sizes from some 100 m in cities to, e.g., 35 km on the country side (GSM)
Pico cells covering building interiors, Micro cells covering selected outdoor areas, and Macro cells for more wider area