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