1. Creating a Wireless VRS Network
Successful Methods and Practices
INF 2062

2. More about me: Clint W. Hopper Client Services Manager
Bachelor of Science in Information Systems
Rogers, Arkansas

3. About Our Network Covers 3,205 square miles (so far) 6.1% of Arkansas
Started March 2008
Completed August 2008

4. How we went about … Selecting a Technology Selecting a Vendor
Selecting a Device
Implementation and Installation
Caveats – Pushing the Limits
Results
Questions

5. Selecting a Technology
Wireless Coverage Research and Planning
Technology Bandwidth
Availability

6. Wireless Coverage Research
Online Maps
Radio Frequency (RF) maps
Request area tower locations or use web
Create your own map resources
Know your variables
Respect the limits
Air Density
Terrain
Surrounding woodland

7. Wireless Coverage Planning
DeLorme XMap
Using Tower Information
Utilize 3D Topography
Profiles
Distance

8. Technology Bandwidth / MTU
Type
Protocol Overhead
BPS/SV
BPS / SVs 4 5 6 7 8 9 10 11 12 13 14
CMR 40
117.36
136.7
156.04
175.38
194.72
214.06
233.4
252.74
272.08
291.42
310.76
CMR+
19.287
117.15
136.44
155.72
175.01
194.3
213.58
232.87
252.16
271.44
290.73
310.02
RTCM2.3
52.659
250.64
303.3
355.95
408.61
461.27
513.93
566.59
619.25
671.91
724.57
777.23
RT27
215.25
259.06
302.87
346.68
390.49
434.3
478.11
521.93
565.74
609.55
653.36
Ask
Test
Push Data
40B + (SVs * BPS/SV)
e.g. 40B + (12 * ) = B

9. Technology Availability
Wireless
FCC mandated
Good chance of single provider
DSL
Unlikely to have single service provider
More likely in rural areas
Cable
More likely in urban areas

10. Selecting a Technology
Selecting a Vendor
Selecting a Device
Implementation and Installation
Caveats – Pushing the Limits
Results
Questions

11. Selecting a Vendor Personal Connection Connecting with your vendor
Good working relationship
Interested in your success
Ability to understand needs
Your implementation goal
Your timeline
Asks questions about your goals
Shows interest
Helps you remember your goals

12. Selecting a Vendor Response Provider Maps Local Tower Locations
Online Maps
Radio Frequency (RF) Maps
Local Tower Locations
Planned Towers
FCC Licensed Tower Search

13. Selecting a Vendor Team Resources Knowledge Results 24/7 Support
Personal Meetings
Knowledge
Understand the Problem
Work on solutions or replacements
Results
Solutions
Timeliness

14. Selecting a Technology
Selecting a Vendor
Selecting a Device
Implementation and Installation
Caveats – Pushing the Limits
Results
Questions

15. Selecting a Device Provider Support Hardware Vendor Support
Does the provider sell/support the device?
Hardware Vendor Support
Can you directly access the hardware vendor?
Software/Firmware Support
Can you download and install updates regularly?
Reception Support
Does the provider allow you access to Wireless Engineers?

16. Selecting a Device Updates to communications hardware
Firmware goes out of date
RF tuning
Remote Management
Check vitals
Check on temperatures
Remote monitoring
SNMP availability
Directional support or Dual Antenna capability

17. Selecting a Technology
Selecting a Vendor
Selecting a Device
Implementation and Installation
Caveats – Pushing the Limits
Results
Questions

18. Implementation & Installation
Timeline
How long do you have to perform?
Weather Conditions
Air density during seasons
Heat conditions
Weather Patterns
Seasonal issues
Line of Sight
Can you see the cell service tower?
Tools
Have you prepared the station site for the equipment?

19. Selecting a Technology
Selecting a Vendor
Selecting a Device
Implementation and Installation
Caveats – Pushing the Limits
Results
Questions

20. Caveats – Pushing the Limits
Wireless Noise and Signal
Alpha, Beta, Gamma Sectors
Maximum Transmission Unit (MTU)
The greatest amount of data or "packet" size that can be transferred in one physical frame on a network. This packet also contains the header and trailer information, which are like addresses for each packet that are required by the routers on the network.

21. Caveats – Pushing the Limits
Maintenance
Updating Preferred Roaming List (PRL)
Modem Status & Firmware
Site Wireless Technology
Different MTU / Technology
1xRTT
One Times Radio Transmission Technology (CDMA 2000)
50Kbps - 100Kbps Upload and Download, bursts to 144Kbps.

22. Site Wireless Technology (cont’d)
EVDO Rev. 0
Evolution Data Optimized
400kbps-700kbps Download, bursts up to 2.0Mbps, 50kbps-100kbps Upload Speed, bursts to 144Kbps.
EVDO Rev. A
500Kbps-1,000Kbps Download, bursts to 3.0Mbps, 300Kbps-400Kbps Upload Speed, bursts to 1.8Mbps.

23. Selecting a Technology
Selecting a Vendor
Selecting a Device
Implementation and Installation
Caveats – Pushing the Limits
Results
Questions

24. Results

25. Results

26. Results

27. Results

28. Questions
Please ask questions.