Communication with Mobile Station
GSM allows subscribers to transmit information over an air interface. Telephone in GSM is called Mobile Station an MS. It has to communicate somehow with the network. On one side of network we have the MS and on the other we have to have a device which sends and receives information from MS. The device is some kind of antenna which is not only an aerial as all may imagine but it has many other functions. In GSM such a device is called Base Transceiver Station a BTS. Area which is covered by one BTS is called a celi.
GSM is called cellular system because its composes of cells.
Single BTS covers limited area. The GSM is global system so it is necessary to have many BTSs to communicate with MSs to cover large area.
Notę:
„For many people this is the GSM network” ©
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