Next Steps Proposed Testbeds Panel Discussion

1. Next Steps Proposed Testbeds Panel Discussion John ChapinChair, SDR Forum SDRF Workshop on Spectrum Access by TV Band Devices Dearborn, Michigan June 16, 2009

2. Proposed Testbeds • Test & Measurement Issues • Slides provided by Bob Cutler, SDRF Test & Measurement Group • Proposed testbed: Curaçao, Netherlands Antilles • Slides provided by Maximilian Sandmann, Vondel Og • Proposed testbed: Wilmington, North Carolina • Slides provided by Bill Seiz, EUE/Screen Gems • NTIA Spectrum Sharing Innovation Test-Bed

3. Cognitive Radio: The Role of Test and Measurement Higher Potential For Interference Lower Spectrum UtilizationLower Capacity Lower Link Reliability Lower Potential for Interference Higher Spectrum Utilization Higher Capacity Higher Link Reliability CR Performance Position affected by: PHY Performance Environment Sensing Performance Policy Performance Regulations, and Specifications Need To Measure: • Interference (actual, or potential for) • Radio System Performance (capacity, link reliability) • Radio Physical Layer Performance (e.g. adjacent channel power) • Environment Sensing Performance (spectrum sensing, location sensing) • Policy Performance (does the policy over, or under protect) • Radio Environment (channel, noise, occupancy) In order to: • Establish regulations and specifications • Verify compliance and performance • Compare implementations Need to answer these questions: What should be measured? How do you measure it? What should the specifications be? Does the radio meet the specifications?

4. Specific T&M issues for TVBD Spectrum Access Visible effects on DTV receiver picture display co-channel, adjacent, +/- N channel Ability to sense wireless microphones standalone, +/- N channels from strong DTV signal Sensing of primary signals when other TVBDs are present Other TVBDs are co-channel, adjacent channel Channel is congested Database interactions protocol correctness compliance with database control commands interact as required (time delay, location change) Efficient channel sharing among multiple TVBDs Interference distance vs detection distance Channels shared between personal/portable and fixed TVBDs Mobile devices SAFETY UTILITY

5. Proposed Testbeds • Test & Measurement Issues • Slides provided by Bob Cutler, SDRF Test & Measurement Group • Proposed testbed: Curaçao, Netherlands Antilles • Slides provided by Maximilian Sandmann, Vondel Og • Proposed testbed: Wilmington, North Carolina • Slides provided by Bill Seiz, EUE/Screen Gems • NTIA Spectrum Sharing Innovation Test-Bed

6. Proposed testbed: Curaçao, Netherlands Antilles The Dutch Antilles intend to become a leader in Cognitive Radio. To achieve this goal a collaborative effort under leadership of the Delft University of Technology has been initiated. Goal: develop an heterogeneous auction-based DSA (Dynamic Spectrum Access) system. Initially in the UHF TV band. • The Antillean regulator has proposed an island-wide testbed on the island of Curaçao for private companies and research institutes. • The testbed will use 701 – 789 Mhz. http://www.sdrforum.org/pages/san_diego_09_dropbox/ https://mentor.ieee.org/1900.6/dcn/09/6-09-0033-01-0000-doi-in-the-netherlands-antilles-on-tvws.ppt (more recent)

7. Map of Curaçao

8. Curaçao Testing Environment Curaçao is the largest of the three so called ABC islands (for Aruba, Bonaire, and Curaçao) of the Leeward Antilles. It has a land area of 444 square kilometers (171 square miles). As of 1 January 2008, it had a population of 140,796. Almost 600,000 people visit Curaçao annually, mostly from Western Europe and the Americas. The whole island is available for the testbed. The Ministry of Transport intends to provide facilities to support cognitive radio tests. Those facilities can be used to simulate the RF environment of different regions of the world. Furthermore the Antillean government intends to “group test” common challenges that are being faced in developing (TVBD) applications for next generation networks. It will allow use of equipment by the local population if this helps Cognitive initiatives to gather valuable data and reach their point of maturity earlier. At the moment additional support from the technical faculty of the University of the Dutch Antilles is being discussed. We ask for input from the industry to help define the required facilities.

9. Proposed Testbeds • Test & Measurement Issues • Slides provided by Bob Cutler, SDRF Test & Measurement Group • Proposed testbed: Curaçao, Netherlands Antilles • Slides provided by Maximilian Sandmann, Vondel Og • Proposed testbed: Wilmington, North Carolina • Slides provided by Bill Seiz, EUE/Screen Gems • NTIA Spectrum Sharing Innovation Test-Bed

10. Proposed testbed: Wilmington, NC • Wilmington, North Carolina - First in DTV • Largest Television and film production facility outside of California • 50 acre complex with various structures and diverse typography • Testbed features • Multiple wireless microphone systems and a dedicated ATSC transmitter • Access to multiple UHF channels prearranged through OET experimental license • Comprehensive facilities and staff support • Private testing for individual manufacturers • Group tests to evaluate TVBD interactions • Low-cost access for researchers www.spectrumtestbed.com

11. Testbed environments at EUE Screen Gems Studios Large indoor spaces with grounded metal walls Regular commercial and residence type structures also available “Urban style” outdoor pathshigh multipath & shadowing Both open land and heavy foliage areavailable on the property

12. Proposed Testbeds • Test & Measurement Issues • Slides provided by Bob Cutler, SDRF Test & Measurement Group • Proposed testbed: Curaçao, Netherlands Antilles • Slides provided by Maximilian Sandmann, Vondel Og • Proposed testbed: Wilmington, North Carolina • Slides provided by Bill Seiz, EUE/Screen Gems • NTIA Spectrum Sharing Innovation Test-Bed

13. NTIA Spectrum Sharing Innovation Test-Bed • Goals • Develop service rules, test signals, compliance measurement techniques • Comply with mandate from Presidential Spectrum Policy Initiative • Spectrum • 410 – 420 MHz (NTIA) • 10 MHz in 470 – 512 Mhz (FCC) • Incumbents • LMR – analog FM, trunked • APCO Project25 – digital TDMA • Status • 5 companies and 1 university have submitted devices • First device in lab tests at ITS Boulder • Second device to enter lab in July/August • http://www.ntia.doc.gov/ntiahome/frnotices/2006/spectrumshare/comments.htm

14. Panel Discussion on Next Steps • Panelists • Kiran Challapali, Philips / CogNeA • Gerald Chouinard, CRC / 802.22 • Mark McHenry, Shared Spectrum Corporation • Challenges • Coordination • Role of the SDR Forum • General Q&A