IEEE standards (Wireless LANs) Presented by Danu Hunskunatai

IEEE standards (Wireless LANs) Definitions : & Wi-Fi Advantages and Disadvantages Wireless Communication: Methods Compare IEEE Standards Future : Standards & security

What is IEEE IEEE is the specification standard for WLANs. Transmission via unlicensed radio spectrum for infrastructure networks or ad-hoc networks.

What is Wi-Fi Wi-Fi means “Wireless Fidelity”. Wi-Fi Alliance organization gives Wi-Fi certified logo. Wi-Fi technologies based on IEEE b standards.

Wireless Advantages Portability & Mobility – easy to move Flexibility & Scalability – can add computer Cost of Ownership – no cable maintenance

Wireless Disadvantages Uses a lot of battery power Throughput (Speed) – Speed & feed Transmission range – Limited (150 feet) Cost – Now, more expensive than wire equipment Security – Hackers can access

Wireless communication method Infrared (IR) : inexpensive, but human can interfere Microwave : longer range (30 Miles), but atmospheric condition can disrupt Radio Frequency (RF) : short range (150 feet) but less interference DSSS – Restore data w/o retransmission FHSS – Easy to build OFDM – carry a large volume of data

Comparing IEEE Standards Standards a802.11b802.11g ApprovedJul. 1997Sep Expected 2003 Transmission range LongShortLong Cost (equipment) NAExpensiveCheapThe best! Throughput1, 2 Mbps54 Mbps11 Mbps11, 54 Mbps Compatibility802.11Wi-Fi5Wi-Fi Wi-Fi at 11 Mbps

Future : Standards StandardsWhat they will offer? IEEE dWorldwide compatible frequency. IEEE eBetter voice and video. IEEE fAll access points will be compatible. IEEE iImproved security system.

Future : i Security IEEE iNow IEEE 802.1X Advanced Encryption Standard (AES)R&D Temporal Key Integrity Protocol (TKIP) Protected EAP (PEAP)

“The Future is now” The end.