Wi-Fi WiMAX

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Information about Wi-Fi WiMAX
Science-Technology

Published on March 18, 2010

Author: pl_arun

Source: authorstream.com

Slide 1: Wi-Max & Wi-MAX Presented & performed by : Presented & performed by Arunachalam PL COMPUTER ENGINEERING Slide 3: Introduction Wireless Communication Infrastructure Of Wimax Wimax Vs Wi-fi Mobile Wimax Salient Features Wimax technology Bibliography Concluding remarks Agenda Wireless Fidelity (Wi-Fi)Welcome to the World of Wireless : Wireless Fidelity (Wi-Fi)Welcome to the World of Wireless A radio technology that networks the devices. Refers to wireless LAN products based on the IEEE 802.11b specification Provides easy connections to the internet and business networks while traveling The main attractive feature of this technology is that it can provide wireless broadband connection within a specific geographic boundary. Slide 5: Infrastructure Mode AD HOC Mode OPERATING MODES Slide 6: There are many WiFi hotspots now available in public places like restaurants, hotels, libraries and airports. For example, Spenzer PLAZA The number of hotspots in the world is growing daily. LOCATING HOTSPOTS Slide 7: Introduction It is one of the most promising broadband wireless access technology for next generation all-IP networks. The 802.16 family of standards is officially called Wireless MAN, it has been dubbed “WiMAX” form World wide Interoperability for Microwave Access. Slide 8: Provide high-speed Internet access to home and business subscribers, without wires. 10-66 GHz and sub 11 GHz Legacy voice systems Voice over IP TCP/IP Applications with different QoS requirements goals Slide 9: WiMAX is targeted for longer range Metropolitan Area (indoor & outdoor) Different from Wi-Fi, which is primarily targeted for Local Area Network (indoor) applications. The main distinction between WiFi and WiMAX is speed and coverage distances: WiFi has a typical bandwidth of 2MBps whereas WiMAX can have a bandwidth of up to 75MBps. The coverage distances also differ to a great extent. A WiFi 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. Wimax vs wi-fi Slide 10: LOS- Line Of Sight NLOS- Non Line Of Sight Wireless communication Slide 11: Orthogonal frequency division multiplexing is a technology based on multicarrier modulation. OFDM possesses multiple carriers which are mutually orthogonal. Theses subcarriers are closely placed to each other on the frequency domain, & each sub carrier is modulated & demodulated separately. ofdm Slide 12: WiMAX works as point to multipoint system, which is made up of base station and subscriber equipment How it works Slide 13: The increased demand on multimedia services let to the need for BWA (Broadband Wireless Access) This let to the appearance of WiMAX technology Advantages of BWA: Fast connection (several Mbps/user) Relatively cheap (no cable infrastructure) Not limited by location (wireless links) Broadband wireless accesses(bwa) Slide 14: Wimax Infrastructure A WIMAX tower: similar in concept to a cell-phone tower. A single WIMAX tower can provide coverage to a very large area (~10 km). Slide 15: A WIMAX receiver : The receiver and antenna could be a small box or PCMCIA card, or could be built into a laptop. NEC Japan has announced its new and compact WiMAX router with embedded wireless LAN, it is dubbed the NEC WiMax Router Any wireless node within the coverage area would be able to access the Internet Wimax routers/base stations Slide 16: There are two versions: Indoor SU. Outdoor SU. Indoor units are comparable in size to a cable modem or DSL modem. Outdoor units are roughly the size of a laptop PC, and their installation is comparable to a residential satellite dish. There is an increasing focus on portable units including handsets and PC peripherals. Outdoor subscriber unit Indoor subscriber unit Subscriber units Slide 17: WiMAX Broadband Applications WiMAX VoIP Broadband Data Connections Digital Television Urban WiMAX Hot Zones Surveillance Services applications of wimax Slide 18: Appearance of VoIP made it possible for Voice over WiMAX  Voice services Appearance of IPTV made it possible for TV over WiMAX  Video services Integrated network: Data, Voice and Video Mobility  WiMAX becomes a strong candidate for future mobile networks Triple play Slide 19: Wimax gadgets The below shown gadgets are the latest using WiMAX technology Slide 20: WiMAX, LTE, MESHWireless Network Doctors at the emergency room can see the vehicle and get an understanding of the mechanism of injury to guide their treatment of the victim. Portable or fixed mounted cameras can be used to capture video or still images of a vehicle accident to send to emergency room doctors. Enables real time monitoring of Patients on the way to the Hospitals Vehicle accident Slide 21: WiMAX, LTE, MESH Wireless Network Doctors at the emergency room can help guide treatment of the victim, especially important for time critical treatment. Cameras inside ambulances can capture video of patients to send to emergency room doctors for consultation. Remote diagnosis can shorten the time before treatment which can potentially save lives and shorten recovery time Remote medical diagnosis Slide 22: Mobile Wimax salient features Slide 23: General packet Radio Services Enhanced Data Rates for GSM Evolution Evolution Data optimized (Only) Wimax speed Slide 24: Security… EAP authentication Key Binding Device and User authentication capability Slide 25: Conclusion Slide 26: Wi-Fi & Wi-Max is an alternative to cable and DSL for last-mile broadband access Developing countries Rural areas Provide high-speed mobile data and telecommunications services using WiMAX. Let us conclude… Slide 27: “A journey of a thousand sites begins with a single click Full effort is full victory .” Its time for small Demo This Paper has been submitted under the guidance of : This Paper has been submitted under the guidance of Over headed by Mr.M. Saravanan (M.E) – Senior Lecturer (Computer Engg). K. Megala B.E – Lecturer (Computer Engg). MR.D.ARUL SELVAN M.E., Head Of the Department / Computer Engineering Mr.M. Ramesh Kumar, MCA.,Mphil – HOD i/c (Computer Engg). Slide 29: WiMAX IEEE WiMAX Magazine Intelligent Environment http://www.media.mit.edu/ http://cooltown.hp.com/ http://portolano.cs.washington.edu/ http://www.firstmonday.dk/issues/issue4_9/odlyzko/ Wearable Computers http://www.redwoodhouse.com/wearable/ http://iswc.gatech.edu/archives.htm Wireless communications http://www.wirelessdevnet.com/ Bibliography Slide 30: Thank You very much….. Create Knowledge Structure Knowledge Disseminate Knowledge Apply Knowledge Assimilate Knowledge Seminar - Knowledge Sharing And Acquiring Environment Apply Knowledge Assimilate Knowledge Disseminate Knowledge Apply Knowledge Assimilate Knowledge Structure Knowledge Disseminate Knowledge Apply Knowledge Assimilate Knowledge Create Knowledge Structure Knowledge Disseminate Knowledge Apply Knowledge Assimilate Knowledge Slide 31: Thank You

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