This document discusses WiMAX (Worldwide Interoperability for Microwave Access) technology, which provides broadband wireless connectivity based on the IEEE 802.16 standard. It describes how WiMAX works using towers and receivers, its standards, architecture including physical and MAC layers, features like range and quality of service, advantages over WiFi, applications, and comparisons with 3G mobile networks. WiMAX allows high-speed wireless internet access over long distances at a lower cost than options like digital subscriber lines.

1. Wimax technology
“A Secure Broadband Network”
Submitted by:
Anita Rani Mahato
8TH SEM, TCE

2. CONTENTS
 Introduction
 Working of WIMAX
 IEEE 802.16 Standard
 IEEE 802.16 Architecture
 Features of WIMAX
 Comparison of WIMAX over WIFI
 Application of WiMAX
 WIMAX vs. 3G
 ISSUES in WIMAX vs. 3G
 FUTURE SCOPE

3. What is WiMAX?
• WiMAX stands for “Worldwide Interoperability for Microwave
Access”.
• WiMAX refers to broadband wireless networks that are based on
the IEEE 802.16 standard, which ensures compatibility and
interoperability between broadband wireless access equipment .
• WiMAX, which will have a range of up to 31 miles, is primarily
aimed at making broadband network access widely available
without the expense of stringing wires (as in cable-access
broadband) or the distance limitations of Digital Subscriber Line.

4. A WIMAX SYSTEM CONSISTS OF
• A WiMAX tower, similar in concept to a cell-phone tower - A single WiMAX
tower can provide coverage to a very large area as big as 3,000 square miles
(~8,000 square km).
• A WiMAX receiver - The receiver and antenna could be a small box or Personal
Computer Memory card, or they could be built into a laptop the way Wi-Fi access
is today.

5. HOW WIMAX WORKS?

6. IEEE 802.16 STANDARD

7. IEEE 802.16 ARCHITECTURE:
1.NETWORK ARCHITECTURE

8. 2. LAYER ARCHITECTURE

9. PHYSICAL LAYER
• WiMAX uses orthogonal frequency division multiplexing
technology.
• The physical layer contains several forms of modulation
(BPSK,QPSK,QAM) and multiplexing (TDD,FDD) techniques.
• IEEE 802.16 uses uplink and downlink maps in order to ensure the
collision free access.

10. MAC LAYER
• IEEE 802.16 MAC layer is connection oriented.
• MAC layer consists of 3 sublayer:
o Convergence service sublayer
o Common part sublayer
o Privacy sublayer

11. FEATURES OF WIMAX
• Range
• Scalability
• Bit rate
• Quality of Service

12. ADVANTAGE OF WIMAX OVER WI-FI
WIFI WIMAX
Range Upto 300 feet(91.4m)
(LAN)
Upto 30 miles(50km)
(MAN)
Channel Fixed channel
(20MHz)
Flexible channel
(1.5 to 20 MHz)
User 1-10 Users 1-100 Users
Bit rate 2.7bps/Hz & peak
Upto 54Mbps
5bps/Hz & peak
Upto 75Mbps
Security Limited Multi level encryption
Quality Of Service Limited support at MAC layer and
enables differentiated services
for voice and video

13. BENEFITS OF WIMAX
• Speed
Faster than broadband service
• Wireless
Low cost system implementation
Easier to extend to suburban and rural areas
• Broad Coverage
Much wider coverage than Wi-Fi hotspots

14. USES OF WiMAX

15. Advantages of WiMAX over 3G
• Greater flexibility
• Higher data rate
• High system capability
• Low Cost
• More reliable

16. ISSUES in 3G vs WiMAX
Cost Issue:
• The main reason to opt for WiMAX is its low cost.
• The price paid per Hz for WiMAX spectrum is as much as
1000 times lower than for 3G spectrum.
• The low cost of WiMAX spectrum compared to 3G is a
clear driver for service providers to enter the field of
wireless services with WiMAX.

17. FUTURE SCOPE
• The IEEE 802.16m standard is the core technology for the
proposed Mobile WiMAX which will enables more efficient,
faster, and more coverage data communication.

18. THANK YOU