ETSI STF386 on Cognitive PMSE Chairmen: Wolfgang Bilz & Prof. Georg Fischer

1. GSC16-GRSC9-09a2 ETSI STF386 on Cognitive PMSE Chairmen: Wolfgang Bilz & Prof. Georg Fischer Status and Next Steps Input to Global Standards Collaboration (GSC)

2. Agenda • STF386 Status • Alignment with German C-PMSE Project • Next Steps

3. STF386 Status 1

4. STF386 Status Team Edgar Reihl P.E.(Shure US) Wolfgang Bilz (Shure EU)Chairman Clemens Kunert (IRT ) Dr. Radu Circa(Bosch conference systems) Prof. Georg Fischer (UNI Erlangen) Chairman Matthias Fehr (APWPT) Dr. Maria DoloresPerez-Guario (UNI Hannover) Dr. Axel Schmidt (Sennheiser)

5. STF386 StatusDeliverables • Phases • Phase A deliverable: Technical Report ETSI TR102799 • “Operation methods and principles for spectrum access systems and quality control of used spectrum for PMSE technologies utilising cognitive interference mitigation techniques” • TB approval January 2010 • Phase B deliverable: Technical Specification ETSI TR102800 • TS on the recommended spectrum access technique • TB approval expected October 2010 • Phase C deliverable: ETSI Technical Report TR102801 • TR on the different RF compliance tests for the selected spectrum access mechanism: • TB approval mid 2012 ? • Support by German national Research project BMWI C-PMSE   Work in progress

6. STF386 StatusSchedule • To Dos • New work item C-PMSE needs to be prepared and kicked off in ETSI! • Financing and contract for Phase C needs to be fixed! Experimental Platform / BMWI Research Project C-PMSE Phase B Phase C Phase A 2010 2011 2009 2013 time 2012 Start 28. Sept TechnicalReport TR102799 TechnicalReport TR102800 TechnicalReport TR102801 New Work Item in ETSI ?

7. STF386 Status Proposed architecture Hierarchical database with geolocation Multiplesniffers! Standardized interfaces, rest is proprietary ABT (Ask before talk) and LBT (Listen before talk) Proactive rather reactive !

8. SCR-4 Roof SCR-1 SCR-2 SCR-0 SCR-3 Doors Movement of interferer Stage with Wireless Mics Receivers Foyer Entrance Hall Interferer Indoor Outdoor STF386 StatusProactive behaviour • Rationale for using multiple Scanning receivers • Predict approaching interferers • Determine Gradients in C/I, BER • Determine movement profile • Compose Radio Environment Map incl. Movement directions

9. Quality of service Gradient DetectionNew proposed proactive scheme with C-PMSE QualityThreshold Action i.e. changeof RRM parameter Reactive scheme with cellular Time STF386 Status Link quality supervision C-PMSE Cellular • RRM proactive scheme • C-PMSE detects quality below threshold in advance from gradient • Cellular reactive scheme e.g. power control • C-PMSE needs proactive scheme! (Ensure production quality 100% of time)

10. STF386 Status Hierarchical database approach • Use same approach as in IP world, DHCP lease for IP address, grant valid for a certain lease time • Spectrum grant: spectrum amount+location+duration+TX power • Use offline copy, no permanent connectivity required, synchronize from time to time • M2M or manual Web interface for legacy support Database at Regulator More seldom updates Frequency Manager Database Regional Database More accurate Location info Local Database Inside C-PMSE1 Local Database Inside C-PMSE2

11. Alignment with German C-PMSE Project 2

12. Alignment with German C-PMSE ProjectProject set up • German C-PMSE Project • Funded by BMWI (Ministry of Economics) • Runs April 2011 till June 2013 • Project Size 7.5 Mil € • Project Partners and STF386 partners partially overlap, but not identical • Main Goals of project • Concept refinement from implement ability point of view • Realization of a cognitive PMSE system • Practical real world demonstration, planned Messe Berlin • Link between ETSI STF386 and BMWI C-PMSE • There is no contractual link between ETSI STF386 and BMWI C-PMSE project • However common understanding and interests • Refinement of Architecture and lessons learnt will go back into ETSI through STF386 • Valuable input for new standardization process

13. STF386 plans Relation between BMWI C-PMSE and STF386 • STF386  C-PMSE • Technical Reports TR102799 and TR102800 have sketched the core concepts and procedures  Starting point for C-PMSE • STF386 can provide guidance in cases, where procedures, architecture partionings and rationales are unclear • STF386 can respond to inquires by C-PMSE, clarify open issues • Consulting on decisions between implementation options, comment on implications for the whole system • C-PMSE  STF386 • Findings by C-PMSE can go into Phase C document TR102801 • STF386 can use interim results for refinement of C-PMSE architecture • Valuable input for kick-off of new work item in ETSI • Jointly STF386 and C-PMSE • Accompany standardisation process • Fast kick off new work item

14. Alignment with German C-PMSE Project Lacking Technology identified • Soft Degradation with digital transmission • Digital transmission typically has sharp edge in quality • Analogue FM has an inherent soft degradation mechanism, the noise in the back simply raises • Fine granular Adaptive Modulation and Coding would be necessary with digital transmission • Source coding • Analogue source coding by compandersactually in use • Digital source coding should be “waveform conservative”, so should not profit from psychoacoustic effects (like assumed e.g. in MP3). Avoids artefacts with cascade of Codecs. • Potential candidate e.g. “Spherical logarithmic quantization” (SLQ) • Bidirectional Signalling • Signalling not available so far, only content plane • Bidirectional signalling plane needs to be added • Signalling plane can use other transmission technology than content plane • Link Quality Monitor • RSSI was found not to be sufficient • An indicator for actual link quality needed • A measure that is dependent on C/I needed • Difficult with analogue FM, but not impossible...

15. Next Steps 3

16. Next StepsTo Dos • At ETSI ERM side • Letter of Engagement LoE needs extension to cover third phase • Budget needs to be put in place • An MOU between ETSI ERM and BMWI C-PMSE would make sense • Strategy for preparation of new work item should be defined • At BMWI C-PMSE side • Conceptual refinements on architecture need to be agreed and freeze to be handed over to ETSI STF386 • At ETSI STF386 side • Funding has to settle • Next meetings need to be scheduled • Date for next document TR102801 should be revisited and set in order to match schedule of BMWI C-PMSE • Contribution to preparation of New Work Item

17. Backup

18. What’s hot? 3

19. What’s hot?What people say... • Transmission Technology • Some people say analogue FM is behind. The problems with PMSE are due to the fact, that PMSE has not digitized yet.Not true - Calculations have shown that analogue FM indeed is very spectrally efficient. • In Light of quality that has to be delivered, PMSE is performing even better than cellular. • Most other systems catch their gains from heavy source coding and suffer from dramatic signalling overhead. • Cellular technology • Some people say PMSE should simply take over well established technology from cellular. • Not that easy, due to a lot of specifics with PMSE (latency, interruption free, soft degradation, lossless coding).

20. What’s hot?What people say... • Source Coding • Some people say that PMSE should use source coding to save spectrum • Not that easy due to other coding schemes in distribution, cascaded codecs lead to artefacts • Only waveform conservative codecs possible • Very tough latency constraints • CR Technology • Some people say the PMSE community is blocking new CR technology • PMSE community cannot accept that a WSD is interfering with a production • WSD that just do LBT without ABT are unacceptable due to hidden node problem

21. What’s hot?What people say... • Hardware/RF Technology • Some people say, the hardware with PMSE is old fashioned... • The constraints imposed by battery and operating time make it difficult to introduce a lot of processing • Analogue in principle is more powerful than digital • However some opportunities are there: More linear RF chains, Switch mode PAs • Introduction of new PMSE technology • Spectrum and radio resource management is a matter of signalling • Only Signalling plane of communication is affected (Handover, power control) • Content plane (Audio signal) can stay analogue • Changes with signalling plane and content plane can be advanced separately