Mobile communication allows users to communicate without physical connections by using wireless handheld devices like mobile phones. Mobile phones allow calling, texting, and accessing the internet. When making a call, the mobile phone connects to the nearest cell tower via a control channel and exchanges security information. The cell tower tracks the phone's location in a database and directs calls to the phone by switching between frequencies as the phone moves between cells. Mobile communication has made communication easier and more convenient.

1. MCMobile Communication
Introduction of
Mobile
Communication &
Working
Saad Ahmed
17bscs-75

2. FRFABRIKAM RESIDENCES
Mobile Phone
A mobile phone is a wireless handheld device
that allows users to make and receive calls
and to send text messages, among other
features of Communication.

3. Mobile Communication
• Mobile Communication is the use of technology
that allows us to communicate with others in
different locations without the use of any physical
connection (wires or cables).
• Mobile communication makes our life easier, and it
saves time and effort.
• Mobile phone is primarily designed for Voice
communication. In addition to the standard voice
function, new generation mobile phones support
many additional services, and accessories, such as
SMS for text messaging, email, packet switching for
access to the Internet, gaming, Bluetooth, camera
with video recorder and MMS for sending and
receiving photos and video, MP3 player, radio and
GPS.
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4. FR
Working of Mobile Communication
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• GSM (Global System for Mobile communication) is a digital mobile network that is widely used
by mobile phone users in Europe and other parts of the world.
• GSM uses a variation of time division multiple access (TDMA) and is the most widely used of
the three digital wireless telephony technologies: TDMA, GSM and code-division multiple
access (CDMA)

5. FR
Working of Mobile
Communication
W h at h ap p en W h en we make a call?
• When we switch on the mobile phone, it tries
for an SID(Security Identifier) on the Control
channel. The Control channel is a special
frequency that the phone and base station
use to talk to one another. If the Mobile
phone finds difficulty to get link with the
control channel, it displays a “no service”
message.
• If the Mobile phone gets the SID, it compares
the SID with the SID programmed in the
phone. If both SID match, the phone identifies
that the cell it is communicating is the part of
its home system.
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6. FR
Working of Mobile Communication
W h at h ap p en wh en we make a call?
• The phone also transmits a registration request along with the SID and the MTSO
keeps track of your phone’s location in a database. MTSO knows in which cell you are
when it wants to ring the phone.
• The MTSO then gets the signal, it tries to find the phone. The MTSO looks in its
database to find the cell in which the phone is present. The MTSO then picks a
frequency pair to take the call.
• The MTSO communicates with the Mobile phone over the control channel to tell it
what frequencies to use. Once the Mobile phone and the tower switch on those
frequencies, the call is connected.
• When the Mobile phone move toward the edge of the cell, the cell’s base station will
note that the signal strength is diminishing. At the same time, the base station in the
cell in which the phone is moving will be able to see the phone’s signal strength
increasing.
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7. FR
Mobile Communication
W h at h ap p en wh en we make a call?
• The two base stations coordinate
themselves through the MTSO. At
some point, the Mobile phone gets a
signal on a control channel and
directs it to change frequencies. This
will switch the phone to the new cell.
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8. Mobile Communication Increase day by day

9. MCMOBILE COMMUNICATION
Thank You.
Saad Ahmed
9999999999
Saadahmedrajput99@gmail.com
SaadAhmed1122@github.com