1. “Worldwide Interoperability for Microwave Access”
Seminar On
“Worldwide Interoperability for Microwave Access”
 (WiMAX)

2. Contents Introduction Defination of Computer Network
Uses of cables in Computer Network.
Need of wireless Concept in computer Network
What is IEEE /WiMAX?
What is ETIS?
Wireless Platforms
What is WiMAX?
Global Wireless standards
Deference Vs a
Uses

3. Interprocessor distance Processors Located in same
Introduction
* Definition of Computer Network.
“ When two or more autonomous computers are interconnected with each other by some means to exchange information then this architecture is known as Computer Network ”
* Types Computer Network.
Interprocessor distance
Processors Located in same
Example
10 m to 1 km
Room,Building, Campus.
LAN
10 km
City
MAN
100 km to 1000km
Country, Continent.
WAN
10,000 km
Planet
Internet

4. Introduction Maximum Data Transfer Rate Less than 10 Mbps
* Use of Cables in Computer Network.
Twisted Pair Cable
Coaxial Cable
UTP Cable
Fiber Optic Cable
Maximum Data Transfer Rate
Less than
10 Mbps
Less than 100 Mbps
Less than 10 Mbps
Less than 100
Gbps
Maximum Distance Allowed
100 M
500 M
150 M
100 M

5. * To reduce the use of cable.
Introduction
* Need of Wireless Concept in Computer Network.
* To reduce the use of cable.
* Low maintenance required.
* High potential for Data Transfer
* Only End to End maintenance required.

6. By industry group called the WiMAX FORUM.
What is IEEE * / WiMAX
The IEEE working group on Broadband Wireless Access standards, which was established by IEEE standards board in 1999.
Although the family of standards is officially called Wireless MAN, it has been dubbed “WiMAX” form World wide Interoperability for Microwave Access.
By industry group called the WiMAX FORUM.
* Other brands and trademarks are property of their respective owners

7. Spectrum
UNII
ISM
GHz 1 2 3 4 5
ISM: Industrial, Scientific & Medical Band Unlicensed band
UNII: Unlicensed National Information Infrastructure band – Unlicensed band

8. 802.11/ Spectrum
International
Licensed
UNII
ISM US
Licensed
International
Licensed
Japan
Licensed
ISM
GHz 1 2 3 4 5
802.16a has both licensed and license exempt options
ISM: Industrial, Scientific & Medical Band – Unlicensed band
UNII: Unlicensed National Information Infrastructure band – Unlicensed band

9. What is ETSI?
The European Telecommunications Standard Institute is an independent, non-for-profit Standardization organization of the Telecommunication industry (equipment makers & network operators) in Europe.
ETSI has been successful in standardizing the GSM cell phone system & TERA professional mobile radio system.

10. Wireless Platforms Fixed Portable Mobile
Licensed and Unlicensed E1/ T1 & DSL level service
Portable
Licensed and Unlicensed
Consumer DSL level service
Mobile
Licensed
Wideband Data Rates
Enterprise
/ Backhaul
Residential
access
Destination
based
Nomadic
Cellular
Wideband
802.16
HiperMAN
802.16
HiperMAN
Hot Spots
802.16e
2.5G, 3G

11. What is WiMAX?
WiMAX is the Worldwide Interoperability for Microwave Access, is a telecommunication technology that provide for the wireless transmission of data.
The name “WiMAX” was created by WiMAX forum, which was formed in June 2001 to promote conformity & Interoperability of the Standard.
The forum describe WiMAX as “a Standard based technology enabling the delivery of last miles wireless broadband access as an alternative to cable & DSL

12. Terms used in WiMAX “Fixed WiMAX”
is often called d It is also referred to as “fixed WiMAX”since it has no support for mobility.
“Mobile WiMAX”
is an amendment to & is often referred to in shortened form as e. It introduce support for mobility, amongst other things & is therefore also known as “mobile WiMAX”.

13. ETSI HiperMAN & HIPERACCESS
Global Wireless Standards
* The IEEE standard is one of a number of complementary wireless standards created by the IEEE to help ensure inter-operability and reduce the risk of wireless technology deployment.
WAN
IEEE
(proposed)
3GPP, EDGE (GSM)
MAN
IEEE WirelessMAN
ETSI HiperMAN & HIPERACCESS
LAN
IEEE WirelessLAN
ETSI HiperLAN
PAN
IEEE Bluetooth
ETSI HiperPAN
Global Wireless Standards *European Telecommunications Standards Institute.

14. 802.11 Vs. 802.16a 802.11 802.16a 802.16a is designed for distance
Optimized for ~100 meters
No “near-far” compensation
Designed to handle indoor multi-path (delay spread of 0.8μ seconds)
Optimization centers around PHY and MAC layer for 100m range
Range can be extended by cranking up the power – but MAC may be non-standard
Optimized for up to 50 Km
Designed to handle many users spread out over kilometers
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
Standard MAC
802.16a is designed for distance

15. 802.11 Vs. 802.16a Relative Performance Channel Bandwidth Maximum
Data Rate
bps/Hz
802.11a
20 MHz
54 Mbps
~2.7 bps/Hz
802.16a
10, 20 MHz;
1.75, 3.5, 7, 14 MHz;
3, 6 MHz
63 Mbps*
~5.0 bps/Hz
* Assuming a 14 MHz channel
802.16a is designed for metropolitan performance

16. WiMAX Portable

17. USES Potential applications :
connecting Wi-Fi hotspots with other parts of the Internet.
Provinding a Wireless alternative to Cable & DSL for “Last MILE” broadband access.
Provinding a source of Internet connectivity as of a business continuty plan.
Providing portable connectivity.