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This article is presented by:Francine Lalooses
David Lancia
Arkadiusz Slanda
Donald Traboini

Wireless ATM

Overview


What is ATM?
The Promise of Wireless ATM
Transition from Wired ATM
Advantages and Disadvantages
Research and Implementations
Goals of the Project


The Promise of W-ATM



Extension of LAN for mobile user
Simplified wiring and configuration
Provide high-speed data access for users without need for a new wired infrastructure
Create unforeseen opportunities for future applications

Transition Issues


Physical Layer
Infrared vs. Radio
Circuit-switched vs. Packet-switched
Channel Coding
Multiple Antennas
Operating Frequency
Licensed vs. Unlicensed Frequency

Transition Issues


Data Link Layer
Encapsulation
Header Compression
ARQ (Automatic Repeat Request) vs. FEC (Forward Error Correction)
Quality-of-Service Issues
Split Functionality
An Example Protocol

Advantages of W-ATM


Benefits of ATM made mobile
Free to roam
Flexible bandwidth allocation
Efficient multiplexing of traffic
Availability of existent ATM switching
Flexibility of reusing same frequency
Soft handoff without any data loss