1. Party of Five Brandon Hoffman Kelly Koenig Azam Masood Phil Nwafor
Facilitating a Wireless Culture: A Discussion of Applications and Challenges
MSIT 413: Wireless Technologies
Party of Five
Brandon Hoffman
Kelly Koenig
Azam Masood
Phil Nwafor

2. The Game Plan Overview Fulfilling a need Solution fit Applications
And the alternatives are?
Case Studies
Solution deep dive
Q & A

3. Wireless, Airports, & Mesh
Phil Nwafor
Wireless, Airports, & Mesh

4. Everywhere, Anywhere…
Wireless availability has become an afterthought

5. Example: Airport Business travelers = captive audience
This means a ready-made market
Since airports are municipally controlled, one party is awarded airspace via RFP process

6. Infrastructure Challenges
Space shared by multiple parties
Building infrastructure: Walls, architecture, material components.

7. Best Fit: Wireless Mesh Networks
Comprised of > 1 physical node with a bi-directional pathway between nodes.
Nodes can be gateways to the Internet
“Cloud” = Collection of several nodes

8. Wireless Mesh Networks
Advantages
Higher Network Coverage
Reliability and Robustness (Self-Heal)
Lower Infrastructure Costs
Lower Deployment & Infrastructure cost
due to reduction in # of access points as a result of Multihop structure!

9. Due to modularity can increase capacity ceiling! (Scalability)
Expand, Expand, Expand
Due to modularity can increase capacity ceiling! (Scalability)

10. ‘Self Healing’ Fault diagnosis algorithm
Threat analysis leads to efficient algorithm design

11. Generations
1st Generation = Pre-IEEE

12. Competing Technologies
Azam Masood
Competing Technologies

13. WiFi Large Market Adaptation and Penetration Reasonable pricing
Non-Standard global spectrum assignments
Limited range
Complex security

14. WiMax Greater Range than WiFi Almost 5x more throughput than WiFi
Newer Technology. Companies/Industry starting to give closer look
Higher capital cost (replace current hardware infrastructure)

15. EDGE Larger Coverage area (Leverages 2.5G signal towers)
Low-throughput (384 kbps)
Higher capital cost (Infrastructure, Bay stations, antennas, hardware)

16. UMTS
Higher throughput (3.5 Mbps)
Larger Coverage area (Leverages 3G signal towers)
Higher capital cost (Infrastructure, Bay stations, antennas, hardware)

17. HiperLAN No compatible consumer products in market
Largely ignored by industry despite > data rates
Security
No compatible consumer products in market
Requires Line-of-sight

18. Bluetooth
Great for connected small personal devices (printers, mouse, etc)
Lower range and throughput as compared to WiFi

19. Kelly Koenig
Business Applications
& Case Studies $ ? € 2 % 9

20. Muncipal Projects: WiFi
Business models
Tax Funding
Provider Funding
Hybrid

21. Municipal Projects: WiFi
Future goals and challenges

22. Case Study: O’Hare Airport
Business Travelers
Airport Vendors
Airlines

23. Case Study: Chicago CTA
WiFi Mesh Network
10 Rail yards (Over 282 Railcars)
Real-Time Maintenance Information

24. Case Study: Starbucks Change in WiFi Provider
Updated business-model to drive customer traffic

25. Brandon Hoffman
Technical Solution

26. Planning Phase
CRITICAL!

27. Planning Aspects
Site Survey including noise floor and edge frequency devices
Propagation through building materials/people
Antenna placement and type due to noise, SNR, and propagation.
What exists behind the walls (if any)

28. Autonomous Access Points
More than air interfaces
Function as complete network nodes

29. LWAPP Access Points
aka Controller-based systems perform air interface functions
Split MAC functions with controller
Handled centrally by a wireless switch or controller

30. LWAPP “Split MAC”

31. Mesh Nodes (Refresher)
Dependent on each other to hop back to gateway nodes
Require a stable clean frequency for backhaul traffic.

32. AWPP Adaptive Wireless Path Protocol
Cisco’s new proprietary mesh protocol
Mixes LWAPP with AWPP

33. Important notes Mobility is more effective in controller-based systems
MIMO before MIMO for better mesh backhaul

34. Wrap-up
The business application, location, and environment will dictate the specific technology that should be used to effectively deploy the wireless data network
Low Cost, High Adaptability

35. Q & A
QUESTIONS?