1. Wireless & Mobile Networking CS 752/852 - Spring 2011
Course Conclusion
Tamer Nadeem
Dept. of Computer Science

2. Big Picture Microsoft, Intel, Cisco … Internet Mesh Networks and
Wireless Backbones
Microsoft, Intel, Cisco …
Personal Area
Networks
Motorola, Intel,
Samsung …
RFID and
Sensor Networks
Citywatchers, Walmart
Intel, Philips, Bosch …

3. The OSI Communication Model

4. Wireless Networking /Mobile Computing
Applications that exploit
ubiquity and mobility.
Challenges underlying such
applications
Ubiquitous Services
Incentives
Application
Privacy
Security
Eavesdropping
Loss Discrimination
Transport
Mobility
Energy Savings
Network
MAC / Link
Spatial Reuse
Interference Mgmt.
PHY
Enabling wireless ubiquity.
Showing what is feasible, and
what is not …
Channel fluctuations

5. What did we cover during the last 15 weeks?
PHY Fundamentals
MAC Schemes (TDMA, CSMA, ZMAC)
Multi Rate, Channel, and Radio Networks
Directional Antennas
Topology & Mobility Control
Ad Hoc Routing
Wireless TCP

6. What did we cover during the last 15 weeks?
Offloading and Smart AP
Wireless Management
Sensing and Monitoring
Localization
Location Privacy
Device Identification
Wireless Security

7. Take away from the course
Wireless Networking
MAC Layer
Routing Layer
Transport Layer
Mobile Computing
Wireless Management
Smart Phone monitoring and sensing
Location privacy and security
Reviews, Presentations, and Project

8. Challenges in MAC Layer
Take away: MAC Layer
Challenges in MAC Layer
Multiple Channel Access Control
CSMA/CA
Hidden/Exposed Nodes
DCF
RTS/CTS, Carrier Sense Range, Interference Range
Contention Windows
Transmission Bit Rate
Exploit temporal and spatial diversity
Multi rate/channel/radio
Directional Antenna
Topology and Mobility Control

9. Take away: Routing/Transport Layer
Challenges in Routing/Transport Layer
Limited wireless transmission range
Mobility-induced route changes
Mobility-induced packet losses
Battery constraints
Potentially frequent network partitions
Packet losses due to transmission errors
TCP cannot classify the cause of loss
Addressing Routing/Transport issues
Proactive vs. Reactive schemes
Basic Routing Schemes: Flooding, DSR, AODV, LAR
Advanced routing metrics and schemes
Link layer and connection split for TCP issues
TCP aware vs. un-aware schemes
Receiver based vs. Sender based TCP control

10. Take away: Mobile Computing
Wireless Management
Channel Hopping and Overlapping
Enterprise Network Coordination
Sensing and Monitoring
Measuring and mining wireless activity
Localization and Location Privacy
Indoor vs. Outdoor localization
Physical vs. Logical localization
CacheCloak solution
Wireless Security and Device Identification
Link layer encryption
Routing misbehavior
PHY vs Application layer for device identification

11. Take away: Reviews, Presentations, and Project
Less the amount of text the better your presentation
Illustrations, animations, and videos
As graduate students you should be able to demo and sell your work
Projects
Build stuff and get interesting results
Hands-on experience with mobile and pervasive systems
Papers if you continue working on it

12. I enjoyed teaching this course 
Conclusion
I enjoyed teaching this course 