Page 205 - CITS - Electronic Mechanic - TT - 2024

ELECTRONICS MECHANIC - CITS

The mast receives the signals and passes them on to its base station, which effectively coordinates what happens
inside each local part of the cellphone network, which is called a cell. From the base station, the calls are routed
onward to their destination. Calls made from one cellphone to another cellphone on the same network travel to
their destination by being routed to the base station nearest to the destination phone, and finally to that phone
itself. Calls made to a cellphone on a different network, or a land line follow a lengthier path. They may have to be
routed into the main telephone network before they can reach their ultimate destination.
A cellphone handset contains a radio transmitter, for sending radio signals onward from the phone, and a radio
receiver, for receiving incoming signals from other phones. The radio transmitter and receiver are not very high-
powered, which means cellphones cannot send signals very far. That’s not a flaw— it’s a deliberate feature of
their design! All a cellphone must do is communicate with its local mast and base station; what the base station
must do is pick up faint signals from many cellphones and route them onward to their destination, which is why
the masts are huge, high-powered antennas (often mounted on a hill or tall building).
Features of Mobile Communication
The following are the features of mobile communication:
High-capacity load balancing:
Each wired or wireless infrastructure must incorporate high-capacity load balancing.
High capacity load balancing means, when one access point is overloaded, the system will actively shift users
from one access point to another depending on the capacity which is available.
Scalability: The growth in popularity of new wireless devices is continuously increasing day by day. The wireless
networks can start small, if necessary, but expand in terms of coverage and capacity as needed - without having
to overhaul or build an entirely new network.

Network management system: Now a day, wireless networks are much more complex and may consist of
hundreds or even thousands of access points, firewalls, switches, managed power and various other components.
The wireless networks have a smarter way of managing the entire network from a centralized point.

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CITS : E & H - Electronics Mechanic - Lesson 118 - 126