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

Contents Introduction Defination of Computer Network Uses of cables in Computer Network. Need of wireless Concept in computer Network What is IEEE 802.16 /WiMAX? What is ETIS? Wireless Platforms What is WiMAX? Global Wireless standards Deference 802.11 Vs.802.16a Uses

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

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

* 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.

By industry group called the WiMAX FORUM. What is IEEE 802.16* / WiMAX The IEEE 802.16 working group on Broadband Wireless Access standards, which was established by IEEE standards board in 1999. Although the 802.16 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

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

802.11/802.16 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

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.

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 802.11 Hot Spots 802.16e 2.5G, 3G

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

Terms used in WiMAX “Fixed WiMAX” 802.16-2004 is often called 802.16d It is also referred to as “fixed WiMAX”since it has no support for mobility. “Mobile WiMAX” 802.16-2005 is an amendment to 802.16-2004 & is often referred to in shortened form as 802.16e. It introduce support for mobility, amongst other things & is therefore also known as “mobile WiMAX”.

ETSI HiperMAN & HIPERACCESS Global Wireless Standards * The IEEE 802.16 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 802.20 (proposed) 3GPP, EDGE (GSM) MAN IEEE 802.16 WirelessMAN ETSI HiperMAN & HIPERACCESS LAN IEEE 802.11 WirelessLAN ETSI HiperLAN PAN IEEE 802.15 Bluetooth ETSI HiperPAN Global Wireless Standards *European Telecommunications Standards Institute.

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

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

WiMAX Portable

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.