wi-fi final ppt 10

7/29/2019 WI-FI FINAL PPT 10

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WI-FI AND WIMAX


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B.MOUNIKA

CH.BINDHU

(II-I/IV)

COMPUTER SCIENCE


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introduction

Wireless Communication

InfrastructureOfWimax Wimax Vs Wi-fi Wimax technology

Concluding remarks


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A radio technology that networks the devices.

Refers to wireless LAN products based on theIEEE 802.11b specification

Provides easy connections to the internet andbusiness networks while traveling

The main attractive feature of thistechnology is that it can provide wirelessbroadband connection within a specificgeographic boundary.


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Infrastructure ModeAD HOC Mode


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There are many WiFi hotspots now available inpublic places like restaurants, hotels, librariesand airports.

For example, Spenser PLAZA

The number of hotspots in the world isgrowing daily.


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It is one of the most promising broadband wirelessaccess technology for next generation all-IPnetworks.

The 802.16 family of standards is officially calledWireless MAN, it has been dubbed WiMAX formWorld wide Interoperability for Microwave Access.


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Provide high-speed Internet access to homeand business subscribers, without wires.

10-66 GHz and sub 11 GHz

Legacy voice systemsVoice over IP


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WiMAX is targeted for longer range Metropolitan Area (indoor& outdoor) Different from Wi-Fi, which is primarily targetedfor Local Area Network (indoor) applications.

The main distinction between WiFi and WiMAX is speed andcoverage distances:

WiFi has a typical bandwidth of 2MBps whereas WiMAXcan have a bandwidth of up to 75MBps.

The coverage distances also differ to a great extent. AWiFi hotspot typically covers a few hundred feet radius(fraction of a kilometer) whereas a WiMAX can practically

cover up to a distance of 10 kilometers.


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WiMAX works as point to multipointsystem, which is made up of basestation and subscriber equipment


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A WIMAX tower: similar inconcept to a cell-phonetower.

A single WIMAX tower canprovide coverage to a verylarge area (~10 km).


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

NEC Japan has announced its new and compact WiMAXrouter with embedded wireless LAN, it is dubbed the NECWiMax Router

Any wireless node within the coverage area would be ableto access the Internet


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WiMAX Broadband ApplicationsWiMAX VoIPBroadband Data ConnectionsDigital TelevisionUrban WiMAX Hot Zones


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The below shown gadgets are the latest usingWiMAX technology


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Doctors at the emergency room cansee the vehicle and get an

understanding of the mechanism ofinjury to guide their treatment ofthe victim.

Portable or fixed mounted cameras

can be used to capture video orstill images of a vehicle accident tosend to emergency room doctors.

Enables real time monitoring of Patients on the way to the

Hospitals


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Doctors at the emergency room can help guidetreatment of the victim, especially importantfor time critical treatment.

Cameras inside ambulances cancapture video of patients to send to

emergency room doctors forconsultation.

Remote diagnosis can shorten the time before treatment which can

potentially save lives and shorten recovery time


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General packet Radio ServicesEnhanced Data Rates for GSM Evolution

Evolution Data optimized (Only)


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EAP authenticationKey BindingDevice and User authentication capability


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Wi-Fi & Wi-Max is an alternative tocable and DSL for last-milebroadband access

Developing countriesRural areasProvide high-speed mobile data and

telecommunications services usingWiMAX.


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A journey of a thousand sites begins with a single click

Full effort is full victory .


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Thank You very much..

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wi-fi final ppt 10

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