J. Martin, M. Westall School of Computing Clemson University jim.martin/westall@cs.clemson

1. Evaluating IEEE 802.16 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 jim.martin/westall@cs.clemson.edu

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: http://people.clemson.edu/~jmarty/publicsafety/PublicSafety.html • 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 • 802.11 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 (formerly 802.16d) : ‘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 2.3-2.4 GHz, 2.496-2.69 GHz, 3.3-3.4 GHz and 3.4-3.8 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: • IEEE 802.16e ‘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 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