Cellular architecture is constituted of the following − A network of cells each with a base station. A packet-switched network for communication between the base stations and mobile switching centres. The public switched telephone networks to connect subscribers to the wider telephony network. In all cellular systems, land area is divided into a number of cells each with its radio service. In AMPS the area is large which in digital services, the area is much smaller. Conventionally cells are hexagonal in shape. Each cell uses a frequency range that is not used by its adjacent cells. However, frequencies may be reused in non-adjacent cells.

1. Wireless Network
(Cellular network
architecture and
HTTP.)

2. Hello!
I am Abdulla Al Moin
My Id: 192-15-2838
Section: PC-B
Dept. of Computer Science & Engineering
Daffodil International University
2

3. Submitted To,
Ms. Fatema Tuj Johora
Lecturer
Dept. of Computer Science Enginreeing
Under Course: CSE313 (Computer Networks)
Daffodil International University
3

4. Index
4
1. Introduction
2. Need of Wireless Network
3. How Wireless Networks Work
4. Type of Network
5. Comparison of Wired & Wireless
6. Cellular Network Architecture: An overview
7. Advantage
8. Disadvantage
9. Applications
10. Conclusions

5. 1. Introduction
Let’s start with the first set of slides

6. What is a wireless network?
✘ A technology that enables two or more entities to communicate
without network cabling.
✘ Wireless Networking today is about where broadcast radio was
in the late 1920s. The use of wireless technology is quickly
becoming the most popular way to connect to a network. Wi-Fi
is one of the many available technologies that offer us the
convenience of mobile computing.
6

7. 2. Needs of wireless
network

8. Needs of wireless network
✘ Mobile communication is needed.
✘ Communication must take place in a terrain that makes wired
communication difficult or impossible.
✘ A communication system must be deployed quickly.
✘ Communication facilities must be installed at low initial cost.
✘ The same information must be broadcast to many locations.
8

9. 3. How Wireless
Networks Work

10. How Wireless Networks Work
✘ Moving data through a wireless network involves three separate
elements: the radio signals, the data format, and the network
structure. Each of these elements is independent of the other
two, so you must define all three Introduction to Wireless
Networks 13 when you invent a new network.
10

11. How Wireless Networks Work
✘ In terms of the OSI reference model, the radio signal operates at
the physical layer, and the data format controls several of the
higher layers. The network structure includes the wireless
network interface adapters and base stations that send and
receive the radio signals.
11

12. 4. Types of Wireless
Network

13. Types of Network
✘ WLANS: Wireless Local Area Networks WLANS allow users in
a local area, such as a university campus or library, to form a
network or gain access to the internet.
✘ WPANS: Wireless Personal Area Networks The two current
technologies for wireless personal area networks are Infra Red
(IR) and Bluetooth (IEEE 802.15). IR requires a direct line of site
and the range is less.
13

14. Types of Network
✘ WMANS: Wireless Metropolitan Area Networks This
technology allows the connection of multiple networks in a
metropolitan area such as different buildings in a city.
14

15. 5. Comparison of Wired &
Wireless Network

16. Comparison of Wired & Wireless
Network
16
Wired Network Wireless Network
Installation of wired
network is so Difficult.
Installation is Easy to
Installation
Time of Installation is more. Time of installation is less.
Reliability is high is Reasonably high
Speed & bandwidth are
high & 100mbps
Speed & bandwidth are low
& 54mbps

17. 6. Cellular Network
Architecture: An overview
17

18. Cellular Network Architecture:
✘ A cellular network or mobile network is a communication
network where the link to and from end nodes is wireless. The
network is distributed over land areas called "cells", each served
by at least one fixed-location transceiver
✘ In a cellular radio system, a land area to be supplied with radio
service is divided into cells in a pattern dependent on terrain
and reception characteristics. These cell patterns roughly take
the form of regular shapes, such as hexagons, squares, or circles
although hexagonal cells are conventional.
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19. Cellular Network Architecture:
Each of these cells is assigned with
multiple frequencies (f1 – f6) which
have corresponding radio base
stations. The group of frequencies
can be reused in other cells,
provided that the same frequencies
are not reused in adjacent cells,
which would cause co-channel
interference.
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20. Cellular Network Architecture:
20

21. 7’8 Advantages &
Disadvantages of wireless
network

22. Advantages:
✘ Speed.
✘ Cost.
✘ Centralized Software Management.
✘ Resource Sharing.
✘ Electronic Mail.
✘ Flexible Access.
✘ Workgroup Computing.
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23. Disadvantages:
✘ Server faults stop applications being available
✘ Network faults can cause loss of data.
✘ Network fault could lead to loss of resources
✘ User work dependent upon network
23

24. 9. Application of wireless
network

25. Applications:
✘ Cable replacement for peripherals
✘ Mobile extension of wired networks
✘ Fixed wireless between homes and businesses and the Internet
✘ Mobile access to the Internet from outdoor areas
25

26. 10. Conclusion

27. In high-density urban area there may
be multiple networks like MPLS, Metro
Ethernet, fiber networks, ADSL.
There may WiMAX is a technology for
providing high speed access to rural
areas. It can provide Copyright to
IJIRCCE DSL like speeds.
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28. 28
Thanks!
Any questions?
You can find me at:
abdullah15-2838@diu.edu.bd

29. 29
Video Links:
https://drive.google.com/file/d/17fG7eG8usfCZE-
SwIyuVt8a9k_QNexQn/view?usp=sharing