Mobile Technologies Flashcards
how does a mobile phone receive data information?
it uses low intensity microwave signals in order to transmit and receive voice and data information
essentially they are small radio transmitters
what can a mobile phone do?
it can transmit radio signals when switched on enabling it to broadcast its radio location so that calls can be diverted to it
mobile phones can communicate using a network of cells to transmit data
what is a SID in mobile phones?
when a phone is powered up it listens for a SID on the control panel
SID- System Identification Code
its a unique code assigned to each network provider
what happens if the phone cannot find any control channels?
the system must be out of range and displays a ‘no service’ message
what happens if two SID match in a phone?
the phone knows that it has connected to its home network
what is the MTSO?
it route calls between different regions of the networks
Mobile Telephone Switching Office
what happens when a call is made on a phone?
the microphone within the mobile phone picks up the voice signal and a microchip and converts it into a radio wave signal so that it can be transmitted over the network
the phones antennae will broadcast signal to the nearest mobile phone mast
the mast then receives the signal and transmits it to the base station
what is the difference between calling phones on the same network than on different ones?
phones on the same network will be routed through base stations until they arrive at the destination phone
different networks may take lengthier route
what are mast stations?
they are large high powered antennae capable of sent radio signals over larger distances
what is network coverages?
its the area you live in is divided up into smaller areas, each area is served by its own masts and base stations, these are referred to as cells
what are cell masts?
they are placed strategically to ensure maximum cell coverage
it means the system can handle many more calls at once
