1. Evaluating IEEE Broadband Wireless as a Communications Infrastructure for Public Safety Activities
Status Update and Demo
10/1/2007
J. Martin, M. Westall
School of Computing
Clemson University

2. WiMAX Project at Clemson
Year 1: 10/1/2006 – 9/30/2007
Build a testbed with first generation WiMAX equipment at Clemson University
University, city, and state public safety organizations participate in the test and evaluation
Develop ‘best practices’ document for deploying, managing, and using WiMAX networks for public safety operations
Results available online at:
Project description (done)
WiMAX performance paper: general discussion of how to map a real WiMAX deployment to actual performance numbers (ongoing)
Testbed measurement results (ongoing)
WiMAX best practices: advice on designing and deploying a WiMAX network (ongoing)

3. WiMAX Project at Clemson
Year 2: 10/1/2007 – 9/30/2008
Extend the Clemson testbed to include mobile WiMAX devices
Evaluate the performance of a core set of voice, video and data applications in mobile scenarios
Focus on the particular problem of transporting large amounts of video data (e.g., video surveillance and in-car video)
Extend our involvement with the WiMAX Forum

4. Project Motivations PI’s Research in broadband access
Public safety communications technology
Agency/City owned networks
mesh
WiMAX
State-wide or nation-wide networks
700 MHz by public safety
Public safety applications
Middleware, process automation
Access data in real-time from the field
Video:
Video surveillance
Video pulled from vehicles

5. 802.16e WiMAX Rollout 802.16e mesh mode
802.16e (formerly d) : ‘fixed’, ‘portable’, ‘nomadic’
Single Base Station, point-to-multipoint
Roaming supported by layer 2 or layer 3
Can support a slow moving vehicle
802.16e : ‘mobile’
Sectors – cell-based system, point-to-multipoint
Roaming supported by WiMAX
Can support a vehicle moving <70mph
802.16e mesh mode
Not on the radar scope

6. WiMAX Spectrum Issues WiMAX Forum dictates the product profiles
Initial Mobile WiMAX products will operate at GHz, GHz, GHz and GHz
Fixed WiMAX profiles at 3.5 GHz and 5.8 GHz
A number of vendors are lobbying for a 4.9 GHz fixed and mobile profile (available in 2008 ?)
Sprint (and others?) likely to develop offerings for public safety
However, at least for the next several years, 4.9 GHz is the best choice for agency use
700 MHz spectrum is possibly in the future (>5 years out )

7. M/A-COM Base Station Vida Broadband Hardened 4.9 GHz base station
Model MAVM-VMXBD

8. M/A-COM Equipment Airlink: Interfaces:
IEEE e ‘nomadic’
5MHz channels at 4.9GHz
OFDM 256 FFT
Output power:
BS: 27dBm output power
Low power client: +20dBm
High power client: +27dBm
TDD operation, 10ms frame time, variable US/DS split
Supported modulation methods: BPSK (1/2, 3/4), 16 QAM(1/2,3/4), 64QAM(1/2,3/4)
Interfaces:
RJ-45 Ethernet
24 V DC Power
4.9 GHz RF and GPS Antenna
Managed by M/A-COM UAS Admin software

9. Campus Deployment
Outdoor Pelco analog PTZ camera (SpectraIV) with IndigoVision 9000E Encoder (with analytics and video mgt software)

10. Campus Deployment
Surveillance camera
McAdams
Base station

11. Surveillance camera
Base station

12. Base station Surveillance camera DL RSS: -89 DL RSS: -77 DL RSS: -91
DL RSS: No signal
DL RSS: -82
DL RSS: No signal
DL RSS: -84
Surveillance camera