Wireless Internet System Architecture :
*Generic Internet Network Architecture
*Layering means encapsulation
*IEEE 802.11 - Seamless integration into the Internet
*Wireless LAN IEEE 802.11 basic architecture
Fundamentals of Wireless LANs :
*Differences between wireless and wired transmission
*Address is not equivalent to physical location
*Dynamic topology and restricted connectivity
*Medium boundaries are not well-defined
*Error-prone medium
*Use of WLANs
*Users can access the Internet on the move.
*WLANs are handy in areas affected by earthquakes or other disasters.
*WLANs are good solutions in places where wiring may not be permitted.
Design Goals of Wireless LANs :
*Operational simplicity
*Power-efficient operations
*License-free operationTolerance to interference
*Global usability
*Security
*Safety requirement
*Quality of service requirements
*Compatibility with other technologies and applications
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