This document summarizes a seminar presentation on WiMAX technology. It describes WiMAX as a wireless broadband technology based on the IEEE 802.16 standard that can provide internet access within a range of up to 31 miles. Key points covered include the basic components of a WiMAX system including towers and receivers, how WiMAX connections work, advantages over other technologies like speed and lack of wired infrastructure, and future applications like integrated laptop access. Issues discussed are the challenges of network deployment and lower costs compared to 3G mobile networks.

1. www.oeclib.in
Submitted By:
Odisha Electronic Control Library
Seminar
On
Wimax

2. Contents
 Introduction
 Working of WIMAX
 IEEE 802.16 standard
 802.16 Architecture
 IEEE 802.16 Specifications
 Features of WIMAX
 Advantages of WIMAX over WIFI
 WIMAX vs. 3G
 ISSUES in WIMAX vs. 3G
 FUTURE OF WIMAX

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. THINK OF INTERNET
 There are three possible ways to access internet.
 Broadband access
Uses DSL or cable modem at home and T1 or T3 line at
office
 WIFI
Uses WIFI routers at home and hotspots on the road
 Dial Up Connection

5. NEW TECHNOLOGY
 Broadband access is too expensive and WiFi coverage is
very sparse.
 The new technology promises
 High speed of broadband service
 Wireless rather than wired access
 Broad Coverage

6. 1) 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).
2) 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 WiFi access is today
A WIMAX system consists of

7. WIMAX TOWER WIMAX
RECEIVER

9. WIMAX Scenario
 Consider a scenario where a WiMax-enabled computer is
10 miles away from the WiMax base station.
 A special encryption code is given to computer to gain
access to base station
 The base station would beam data from the Internet
required for computer (at speeds potentially higher than
today's cable modems)

10. WIMAX Scenario
 The user would pay the provider monthly fee for using the
service. The cost for this service could be much lower than
current high-speed Internet-subscription fees because the
provider never had to run cables
 The WiMAX protocol is designed to accommodate several
different methods of data transmission, one of which is
Voice Over Internet Protocol (VoIP)
 If WiMAX-compatible computers become very common,
the use of VoIP could increase dramatically. Almost anyone
with a laptop could make VoIP calls

11. WIMAX CHIPS
WiMAX Mini-PCI Reference Design Intel’s first WIMAX chip

12. FEATURES OF WIMAX
 Scalability
 Quality of Service
 Range
 Coverage

13. RANGE
 Optimized for up to 50 Km
 Designed to handle many users spread out over kilometres
 Designed to tolerate greater multi-path delay spread (signal
reflections) up to 10.0μ seconds
 PHY and MAC designed with multi-mile range in mind

14. BENEFITS OF WIMAX
 Speed
 Faster than broadband service
 Wireless
 Not having to lay cables reduces cost
 Easier to extend to suburban and rural areas
 Broad Coverage
 Much wider coverage than WiFi hotspots

15. Benefits to Customers
 Range of technology and service level choices from both
fixed and wireless broadband operators
 DSL-like services at DSL prices but with portability
 Rapidly declining fixed broadband prices
 No more DSL “installation” fees from incumbent

16. Advantages of WiMax over 3G
 Using an assortment of proprietary and standards-based
technologies, such as OFDM and W-CDMA ,WiMax has a
clear advantage over 3G
 The advantages include
 Higher Throughput
 Low Cost
 Lower Latency

17. Advantages of WiMax over 3G

18. USES OF WIMAX

19. FUTURE
 WiMax will be deployed in three stages
 In the first phase WiMaX technology (based on IEEE
802.16-2004) provides fixed wireless connections
 In the second phase WiMaX will be available as a cheap
and self-installing Subscriber Terminal (ST), linked to
PC and to antenna
 The third phase enables portability, thus WiMAX (based
on IEEE 802.16e) will be integrated into commercial
laptops

20. Promises

21. ISSUES in 3G vs. WIMAX
 Deployment of the network
 WIMAX deployment is in the planning stages and it
might take 3-5 years in providing reasonable coverage in
well populated areas
 WiMax may initially be relegated to college campuses
and larger corporate campuses where people are less
mobile and costs containment is important

22. 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

23. Conclusion (The Final Issue)
 Will WIMAX replace 3G?
 Along with the forthcoming standardization, WiMAX has
the potential to substitute 3G and become a promising 4G
 WiMAX has its distinct identity as either a stand-alone
solution for incumbent and competitive fixed network
operators or as complementary radio access solution for
established 2G and 3G cellular network operators
 Fixed-line operators, on the one hand, may consider
WiMAX as a viable alternative to add mobility to the
service portfolio, leveraging their huge subscriber base, in
particular in countries where 3G licensing is delayed or not
affordable

24. THANKS