GSC 16 -GRSC 9 -09 a 2 ETSI

GSC 16 -GRSC 9 -09 a 2 ETSI STF 386 on Cognitive PMSE Chairmen: Wolfgang Bilz & Prof. Georg Fischer Status and Next Steps Input to Global Standards Collaboration (GSC)

Agenda 1. STF 386 Status 2. Alignment with German C-PMSE Project 3. Next Steps Page 2 | GSC | 11 th Sept 2011 GSC 16 -GRSC 9 -09 a 2

GSC 16 -GRSC 9 -09 a 2 1 Page 3 | GSC | 11 th Sept 2011 STF 386 Status

GSC 16 -GRSC 9 -09 a 2 STF 386 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) Page 4 | GSC | 11 th Sept 2011 Dr. Axel Schmidt (Sennheiser) Dr. Maria Dolores Perez-Guario (UNI Hannover)

STF 386 Status GSC 16 -GRSC 9 -09 a 2 Deliverables Phases • Phase A deliverable: Technical Report ETSI TR 102799 - “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 TR 102800 - TS on the recommended spectrum access technique - TB approval expected October 2010 • Phase C deliverable: ETSI Technical Report TR 102801 Work in progress - 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 Page 5 | GSC | 11 th Sept 2011

GSC 16 -GRSC 9 -09 a 2 STF 386 Status Schedule 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 A Phase B 2010 2009 Start 28. Sept Phase C Technical Report TR 102799 2011 2012 Technical Report TR 102800 Technical Report TR 102801 New Work Item in ETSI ? Page 6 | GSC | 11 th Sept 2011 2013 time

STF 386 Status GSC 16 -GRSC 9 -09 a 2 Proposed architecture Multiple sniffers! Hierarchical database with geolocation Standardized interfaces, rest is proprietary ABT (Ask before talk) and LBT (Listen before talk) Proactive rather reactive ! Page 7 | C-PMSE PBA | 24 th May 2011

GSC 16 -GRSC 9 -09 a 2 STF 386 Status Proactive 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 SCR-4 Roof SCR-1 SCR-0 SCR-3 Doors Movement of interferer Stage with Wireless Mics Receivers Foyer Entrance Hall Interferer Indoor Page 8 | C-PMSE PBA | 24 th May 2011 SCR-2 Outdoor

GSC 16 -GRSC 9 -09 a 2 STF 386 Status Link quality supervision Quality of service Gradient Detection New proposed proactive scheme with C-PMSE Cellular Quality Threshold Reactive scheme with cellular Action i. e. change of RRM parameter Time 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) Page 9 | C-PMSE PBA | 24 th May 2011

GSC 16 -GRSC 9 -09 a 2 STF 386 Status Hierarchical database approach Database at Regulator More seldom updates Frequency Manager Database More accurate Location info Regional Database Local Database Inside C-PMSE 1 Page 10 | C-PMSE PBA | 24 th May 2011 • 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 • M 2 M or manual Web interface for legacy support Local Database Inside C-PMSE 2

GSC 16 -GRSC 9 -09 a 2 2 Page 11 | GSC | 11 th Sept 2011 Alignment with German C-PMSE Project

Alignment with German C-PMSE Project GSC 16 -GRSC 9 -09 a 2 Project 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 STF 386 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 STF 386 and BMWI C-PMSE • There is no contractual link between ETSI STF 386 and BMWI C-PMSE project • However common understanding and interests • Refinement of Architecture and lessons learnt will go back into ETSI through STF 386 • Valuable input for new standardization process Page 12 | GSC | 11 th Sept 2011

STF 386 plans GSC 16 -GRSC 9 -09 a 2 Relation between BMWI C-PMSE and STF 386 C-PMSE • Technical Reports TR 102799 and TR 102800 have sketched the core concepts and procedures Starting point for C-PMSE • STF 386 can provide guidance in cases, where procedures, architecture partionings and rationales are unclear • STF 386 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 STF 386 • Findings by C-PMSE can go into Phase C document TR 102801 • STF 386 can use interim results for refinement of C-PMSE architecture • Valuable input for kick-off of new work item in ETSI Jointly STF 386 and C-PMSE • Accompany standardisation process • Fast kick off new work item Page 13 | C-PMSE PBA | 24 th May 2011

Alignment with German C-PMSE Project GSC 16 -GRSC 9 -09 a 2 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 companders actually in use • Digital source coding should be “waveform conservative”, so should not profit from psychoacoustic effects (like assumed e. g. in MP 3). 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. . . Page 14 | GSC | 11 th Sept 2011

GSC 16 -GRSC 9 -09 a 2 3 Page 15 | GSC | 11 th Sept 2011 Next Steps

Next Steps GSC 16 -GRSC 9 -09 a 2 To Dos At ETSI ERM side • Letter of Engagement Lo. E 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 STF 386 At ETSI STF 386 side • Funding has to settle • Next meetings need to be scheduled • Date for next document TR 102801 should be revisited and set in order to match schedule of BMWI C-PMSE • Contribution to preparation of New Work Item Page 16 | GSC | 11 th Sept 2011

GSC 16 -GRSC 9 -09 a 2 Backup

GSC 16 -GRSC 9 -09 a 2 3 What’s hot? Page 18 | C-PMSE PBA | 24 th May 2011

What’s hot? GSC 16 -GRSC 9 -09 a 2 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). Page 19 | C-PMSE PBA | 24 th May 2011

What’s hot? GSC 16 -GRSC 9 -09 a 2 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 Page 20 | C-PMSE PBA | 24 th May 2011

What’s hot? GSC 16 -GRSC 9 -09 a 2 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 Page 21 | C-PMSE PBA | 24 th May 2011