WiMAXWiMAXWorldwide Interoperability for Microwave Worldwide Interoperability for Microwave

AccessAccess

AMIT KUMARAMIT KUMAR M TECH (ECE)M TECH (ECE) 0903230209032302

The world of WIRELESS….. The world of WIRELESS….. Have you ever wanted to Have you ever wanted to

lounge on a beach chair at a lounge on a beach chair at a fancy resort and surf the fancy resort and surf the Internet? Connect and get Internet? Connect and get your email in a coffee shop ?your email in a coffee shop ?

Put together some computers Put together some computers in your home so that they can in your home so that they can share files or access to the share files or access to the Internet without drilling holes Internet without drilling holes or snaking snarled wires from or snaking snarled wires from one computer to another? one computer to another?

What Is WiFi? What Is WiFi? WiFi, short for wireless fidelity, is a wireless standard, or WiFi, short for wireless fidelity, is a wireless standard, or

protocol, used for wireless communication. protocol, used for wireless communication. WiFi devices are certified interoperable and run on some WiFi devices are certified interoperable and run on some

flavor of 802.11, a medium-range wireless networking flavor of 802.11, a medium-range wireless networking standard. standard.

802.11 runs at speeds roughly comparable to those of wired 802.11 runs at speeds roughly comparable to those of wired networks.networks.

No license is required to broadcast or communicate using No license is required to broadcast or communicate using 802.11 (or WiFi).802.11 (or WiFi).

Free portions of the radio spectrum used by 802.11 (and WiFi) Free portions of the radio spectrum used by 802.11 (and WiFi) are the 2.4GHz band, and, more recently, the 5GHz band. are the 2.4GHz band, and, more recently, the 5GHz band.

But if this is WiFi then what is WiMAX!!!

What is WiMAX?What is WiMAX?

WiMAXWiMAX is an acronym that stands for is an acronym that stands for WWorldwide orldwide IInteroperability for nteroperability for MMicrowave icrowave AccAccess, a ess, a certification mark for products that pass certification mark for products that pass conformity and interoperability tests for the IEEE conformity and interoperability tests for the IEEE 802.16 standards.802.16 standards.

It is similar to WiFi in concept, but has certain It is similar to WiFi in concept, but has certain improvements that are aimed at improving improvements that are aimed at improving performance and should permit usage over much performance and should permit usage over much greater distances.greater distances.

GHz1 3

2 4

ISM: Industrial, Scientific & Medical Band – Unlicensed band

UNII: Unlicensed National Information Infrastructure band – Unlicensed band

ISM

5

InternationalLicensed

USLicensed

JapanLicensed

InternationalLicensed ISM

802.16a has both licensed and license-exempt options

SPECTRUM

WiMAX FeaturesWiMAX Features Long range , high data rateLong range , high data rate Less susceptible to interferenceLess susceptible to interference Very viable mobile alternative to DSL and cableVery viable mobile alternative to DSL and cable Wireless broadband data delivery at homeWireless broadband data delivery at home Plug and play installationPlug and play installation Can connect IEEE 802.11(Wi-Fi) hotspots with each Can connect IEEE 802.11(Wi-Fi) hotspots with each

other and to other parts of the Internet other and to other parts of the Internet

The Problems WiMAX SolvesThe Problems WiMAX Solves

Broadband wireless access to the masses Broadband wireless access to the masses An inexpensive alternative to digital subscriber lines An inexpensive alternative to digital subscriber lines

(DSL) and cable broadband access(DSL) and cable broadband access Installation costs for a wireless infrastructure based Installation costs for a wireless infrastructure based

on 802.16 is far less than today's wired solutionson 802.16 is far less than today's wired solutions WiMAX can also solve the problem of how to keep WiMAX can also solve the problem of how to keep

wireless notebooks and other mobile devices wireless notebooks and other mobile devices connected between 802.11 hotspots connected between 802.11 hotspots

WiMAX APPLICATIONS WiMAX APPLICATIONS Cellular backhaulCellular backhaul Broadband to rural and remote areasBroadband to rural and remote areas Broadband on demandBroadband on demand Broadband residentialBroadband residential Best connected wireless servicesBest connected wireless services

RANGE OF SERVICES BY WiMAXRANGE OF SERVICES BY WiMAX

HOW WIMAX WORKS ??HOW WIMAX WORKS ??

Infrastructure of WIMAXInfrastructure of WIMAX

A WIMAX tower: similar in concept to a cell-phone A WIMAX tower: similar in concept to a cell-phone tower. A single WIMAX tower can provide coverage tower. A single WIMAX tower can provide coverage to a very large area (~8,000 km). to a very large area (~8,000 km).

A WIMAX receiver : The receiver and antenna could A WIMAX receiver : The receiver and antenna could be a small box or PCMCIA card, or could be built be a small box or PCMCIA card, or could be built into a laptop. into a laptop.

IntroductionIntroduction

A WIMAX tower

An example of WIMAX receiver : PCMCIA card

WiMAX System PartsWiMAX System Parts WiMAX towerWiMAX tower

Similar in concept to a cell-phone towerSimilar in concept to a cell-phone tower Can provide coverage to a very large area -- Can provide coverage to a very large area --

as big as 3,000 square milesas big as 3,000 square miles A WiMAX receiverA WiMAX receiver

The receiver and antenna could be a The receiver and antenna could be a small box or PCMCIA card, or they could small box or PCMCIA card, or they could be built into a laptop the way WiFi access be built into a laptop the way WiFi access is todayis today

Two forms of wireless Two forms of wireless serviceservice

Non-line-of-sightNon-line-of-sight A small antenna on your computer A small antenna on your computer

connects to the towerconnects to the tower 2 GHz to 11 GHz frequency range2 GHz to 11 GHz frequency range Limited to a 4-to-6 mile radius Limited to a 4-to-6 mile radius

Two forms of wireless Two forms of wireless serviceservice

Line-of-sight serviceLine-of-sight service A fixed dish antenna points straight at A fixed dish antenna points straight at

the WiMAX tower from a rooftop or pole.the WiMAX tower from a rooftop or pole. 66 GHz frequency range66 GHz frequency range Higher frequencies, there is less Higher frequencies, there is less

interference and lots more bandwidthinterference and lots more bandwidth 30-mile radius 30-mile radius

SpecificationsSpecifications RangeRange

30-mile radius from base station30-mile radius from base station SpeedSpeed

70 megabits per second70 megabits per second Line-of-sight not needed between Line-of-sight not needed between

user and base stationuser and base station

In practical terms, WiMAX would In practical terms, WiMAX would operate similar to WiFi but at higher operate similar to WiFi but at higher speeds, over greater distances and speeds, over greater distances and for a greater number of users.for a greater number of users.

Uses for WiMAXUses for WiMAX Fixed last-mile broadband access as a replacement or

substitute for wired DSL, cable, or T1 connections Hotspot subscriber and Backhaul provider connections

supported High-speed enterprise connectivity for business WiMAX antennae may be even connected to an Internet

backbone via either a light fiber optics cable or a directional microwave link.

Sony and Microsoft are closely considering the addition of WiMax as a feature in their next generation game console allowing gamers to create ad hoc networks with other players.

Wifi vs. WimaxWifi vs. Wimax

COMPARISION OF WiMax WITH OTHER TECHNOLOGIES

WiMAX as a Metro-Access WiMAX as a Metro-Access Deployment OptionDeployment Option

Fixed( IEEE 802.16)Fixed( IEEE 802.16) * For fixed devices not mobile in nature.* For fixed devices not mobile in nature.

* Its just a wireless form of DSL or T1. * Its just a wireless form of DSL or T1.

Portable( IEEE 802.16e)Portable( IEEE 802.16e) * OFDMA* OFDMA * Carrier divided into multiple sub carriers* Carrier divided into multiple sub carriers

* last-mile delivery improved by multi-path interference , delay spread , * last-mile delivery improved by multi-path interference , delay spread ,

robustness robustness

Key WiMAX Players

AlcatelAlcatel EricssonEricsson IntelIntel Lucent,Lucent, MotorolaMotorola SamsungSamsung SiemensSiemens DishnetDishnet Many others…Many others…

PROSPECTS FOR WiMax Internet users

PROSPECTS FOR WiMax(cont..)

WiMAX Subscribers

FUTURE PROSPECTSFUTURE PROSPECTS

The WiMAX forum, backed by industry leaders (like Intel), The WiMAX forum, backed by industry leaders (like Intel), helps the widespread adoption of broadband wireless access helps the widespread adoption of broadband wireless access by establishing a brand for the technology.by establishing a brand for the technology.

When WiMAX chipsets are integrated into laptops and other When WiMAX chipsets are integrated into laptops and other portable devices, it will provide high-speed data services on portable devices, it will provide high-speed data services on the move, extending today's the move, extending today's

It will enable end-users to enjoy an "Always Best Connected" It will enable end-users to enjoy an "Always Best Connected" experience. experience.

And More…And More…

THANKS!!