WIRELESS LAN:PAST, PRESENT, AND FUTURE
Steven RenoDepartment of Computer Science
University of Wisconsin- Platteville
CONTENTS
Introduction History Wi-Fi Today The Future of Wi-Fi Current Applications Problems Conclusion
INTRODUCTION
Nation of Convenience Stores Fast-food Microwaves Remote-controls
And now…Wireless LAN Ease of use
INTRODUCTION
Wireless Telegraph- late 19th century Morse Code
Radio- after telegraph/telephone No speech at first
INTRODUCTION
Wireless LAN Wireless Fidelity (Wi-Fi)
Usage Today Homes Offices Public places
Devices Computers Smartphones Music players Appliances
INTRODUCTION
IEEE- Institute of Electrical and Electronics Engineers
LAN 802.3
WLAN 802.11
Wireless- a very broad field Cellular Home telephony RFID
HISTORY
The need for WLAN First WLAN
ALOHAnet (1970) First Devices
ARLAN-SST (1988) RangeLAN (1989)
802.11 committee
WI-FI TODAY
Wireless Ethernet Compatibility Alliance (WECA) Now, Wi-Fi Alliance Interoperability testing Certification of 802.11 products
FUTURE OF WLAN
802.11n Increase Throughput Increase Range Multiple Input Multiple Output (MIMO) Spatial Division Multiplexing (SDM) Channel Width
APPLICATIONS OF WLAN
Business Travelers Airports Airplanes Hotels Conference Centers
College Students Campus Wi-Fi
CONCLUSION
Constant Technology Improvement Faster Longer Range More Secure
Future IEEE 802.11n
Throughput Range Backwards Compatibility
REFERENCES Derfler, F., & Freed, L. (2005). How Networks Work. Indianapolis: Que Publishing.
Flickenger, R. (2007). Wireless Networking in the Developing World. Hacker Friendly LLC.
IEEE 802.11. Wikipedia. Retrieved Nov. 2, 2009
<http://en.wikipedia.org/wiki/IEEE_802.11>.
Learn About Wireless Antennas. Retrieved Nov. 2, 2009. <http://www.wirelessantennahelp.com/index.htm>.
Negus, K. J. (2008, Apr. 4). History of WLANs in the Unlicensed Bands. 1-13. Retrieved Nov. 2, 2009.
Stallings, W. (1005). Wireless Communications and Networks. Upper Saddle River:
Pearson Prentice Hill. Wireless LAN. Wikipedia. Retrieved Nov 2, 2009
<http://en.wikipedia.org/wiki/Wireless_LAN>. Wireless Without Compromise: Delivering the promise of IEEE 802.11n. Meru
Networks Retrieved Nov. 2, 2009.
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