Wifi Challenges


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Wifi Challenges

  1. 1. 1<br />DELHI SCHOOL OF MANAGEMENTDELHI TECHNOLOGICAL UNIVERSITY<br />Submitted to: Prof. P.K. SuriSubmitted by:<br /> Case : Information Technology Management Ishaan Sharma 64/MBA<br /> Date : 06-Feb-2010ShekharRaiwani 48/MBA<br /> Class : 2nd Sem MBA Vaibhav Seth 57/MBA<br />VineetMakhija 59/MBA<br />
  2. 2. Wi-Fi???<br />What is Wi-Fi ?<br />Wireless Fidelity<br />2<br />
  3. 3. WI-FI<br />Radio Signal<br />300 feet range<br />Based on IEEE 802.11 standard<br />Trade name for wireless broadband technology<br />Usually operates in range of 2.4Mhz<br />3<br />
  4. 4. Wi-Fi<br />Wi-Fi refers to an over-the-air connection with a wireless client and a base between two wireless clients<br />it operates in unlicensed frequency bands, any one can set up a Wi-Fi network <br />true freedom if your computer is Wi-Fi CERTIFIED radio (a PC Card or similar device) configured. <br />Wi-Fi certification =ability to connect anywhere<br />4<br />
  5. 5. Wi-Fi<br />Wi-Fi certification comes from the Wi-Fi Alliance, a non-profit international trade organization<br />tests 802.11-based wireless equipment to make sure it meets the Wi-Fi standard<br />5<br />
  6. 6. IEEE wireless standards <br />6<br />
  7. 7. IEEE 802.11b<br /><ul><li>Appear in late 1999
  8. 8. Operates at 2.4GHz radio spectrum
  9. 9. 11 Mbps (theoretical speed) - within 30 m Range
  10. 10. 4-6 Mbps (actual speed)
  11. 11. 100 -150 feet range
  12. 12. Most popular, Least Expensive
  13. 13. Interference from mobile phones and Bluetooth devices which can reduce the transmission speed.</li></ul>7<br />
  14. 14. Penetration of Wi-Fi<br />8<br />
  15. 15. Question -1<br />What are the business benefits of Wi-Fi networks ?<br />9<br />
  16. 16. United Parcel System<br />Equipped worldwide distribution center with wireless service<br />Cost $120 million<br />35% productivity gain<br />10<br />
  17. 17. Wells dairy<br />Manufacturers blue bunny brand of ice-cream<br />Equipped with Wi-Fi .Serves 900 employees <br />10 hrs/week saved in technical support as not many data lines to maintain<br />11<br />
  18. 18. Wi-Fi provides Freedom<br />FREEDOM from WIRE<br />12<br />
  19. 19. Wi-Fi provides Freedom<br />freedom to physically move around your home or business<br />freedom to grow and move an office or business without having to install new cables and wires<br />freedom to be connected while travelling and on the road<br />freedom from drilling holes in walls and floors<br />freedom from dragging cables or hide them under rugs<br />13<br />
  20. 20. Drivers of Wi-Fi<br />Internet becomes part of our life<br />E-mail<br />Wireless devices like laptops<br />Anywhere, anytime access.<br />Wi-Fi components are now on a rapid cost reduction curve as volumes increase<br />to remain constantly interconnected while roaming within the range of a base station<br />14<br />
  21. 21. Benefits contd.<br />Super fast wireless connection<br />¼ th cost compared to wired N/Ws<br />Low cost and extensive availability of Wi-Fi products <br />Mobility - users can move about almost without restriction <br />Flexibility & scalability<br />Convenience- seamless connectivity<br />Time saving<br />Customized<br />15<br />
  22. 22. After Implementing Wi-Fi<br />High user productivity - employees can work more effectively and efficiently<br />Cost efficiency - accurate design means less wastage and more performance<br />Maximum Return on Investment<br />Improved Quality of Work <br />reducing the costs of network deployment and expansion<br />Competitive edge to business<br />16<br />
  23. 23. Number of users by time of day<br />17<br />
  24. 24. Question 2<br />What are some of the problems faced by the companies using that are using Wi-Fi networks? What are the solution to those problems?<br />18<br />
  25. 25. GM & Marriot Hotel<br />General Motors has deployed Wi-Fi in 90 manufacturing plants but is holding off on Wi-Fi at its headquarters until next year. Why?<br />19<br />
  26. 26. Marriot hotel across the street<br />Guests at hotel could log on GM N/W<br />Can go away with vital info<br />So GM waiting for new encryption code<br />20<br />
  27. 27. Problems<br />Problem of placement - Frequency spectrum used by IEEE 802.11b is shared by many other systems like Mic wave ovens, cordless phones ,BTetc. This causes interference problem.<br />EmployeeLaptopWi-fiInternet effects productivity<br />HT Brunch-Statistics 30% of employees spend at least an hour online doing personal things<br />Security concern<br />It has a limited bandwidth of about 83.5 MHz.<br />Challenge for the IT dept<br />21<br />
  28. 28. Challenges <br />Two major challenges are<br />Encryption<br />Authentication<br />22<br />
  29. 29. 23<br />
  30. 30. Solutions<br />24<br />
  31. 31. Solution Contd.<br />Enhanced security standard<br />25<br />
  32. 32. Solution Contd.<br />No Laptop in important meetings<br />26<br />
  33. 33. Question 3<br />What are some other business uses for Wi-Fi networks not mentioned in this case? What are their business benefits and challenges?<br />27<br />
  34. 34. Uses<br />Pubs , Restaurants, Coffee shops (e.g. Starbucks)<br />Colleges and Universities (e.g. DTU)<br />Stadiums, casinos, groceries, hospitals and department stores<br />Train stations for Internet connectivity<br />Logistics - Truck drivers can tap the Internet and communicate scheduling and other data back to home base without deviating from their routes(e.g. Walmart does this)<br />VPN on the move in case the city is equipped with wifi<br />28<br />
  35. 35. Benefits<br />Wi-Fi uses unlicensed radio spectrum .So, no licenses to be purchased.<br />reduce associated costs of network connection and expansions.<br />Places where cables cannot be run, such as outdoor areas and historical buildings<br />If sites are close by, such as across the street, a directional antenna can be used to avoid digging trenches under roads to connect the sites.<br />29<br />
  36. 36. Drawbacks<br />Power consumption is fairly high compared to some other standards, making the battery life and heat a concern to some users.<br />Spectrum assignments and operational limitations are not consistent worldwide<br />30<br />
  37. 37. Competing Technologies<br />Bluetooth<br />Wi-MAX<br />31<br />
  38. 38. Conclusion<br />Factors Ranking<br />32<br />
  39. 39. “Once you go wireless, <br />you will never want to use a cable again.”<br />33<br />
  40. 40. 34<br />