ETSI STF386 on Cognitive PMSE Chairmen: Wolfgang Bilz & Prof. Georg Fischer Status and Next Steps...

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

Status and Next Steps

Input to Global Standards Collaboration (GSC)

Agenda

1. STF386 Status

2. Alignment with German C-PMSE Project

3. Next Steps

| GSC | 11th Sept 2011

STF386 Status

1


STF386 Status Team

Wolfgang Bilz(Shure EU)Chairman

Prof. Georg Fischer(UNI Erlangen)

Chairman

Matthias Fehr(APWPT) Dr. Axel Schmidt

(Sennheiser)

Dr. Maria DoloresPerez-Guario

(UNI Hannover)

Dr. Radu Circa(Bosch conference

systems)

Edgar Reihl P.E.(Shure US)

Clemens Kunert(IRT )


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


http://www.bmwi.de/BMWi/Navigation/root.html

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!

Start28. Sept

time

Phase A

2009 2010 2012

Phase B Phase C

TechnicalReportTR102799



Experimental Platform / BMWI Research Project C-PMSE

2011

New Work Item in ETSI ?


2013

STF386 Status Proposed architecture

Hierarchical database with geolocation

ABT (Ask before talk)

and LBT

(Listen before talk)

Proactive rather reactive !

Multiplesniffers!

rpi

cmi

Service Level Entry

(SLE)

FAT PAT

AMCT

Radio Resource Manager (RRM)

RadioLink

Frequency coordinator

(FCO)

Regulatory

Scanning Receiver

(SCR)

RRM

fci

n

m

C-PMSE 2

cpi

Performance Monitor (PMO)

DAT

CEN

fci

C-PMSE 1

REM

Cyclic Unit (CYU)

Fusion Engine (FEN)

Optimisation Engine (OEN)

Decision-Maker Engine

(DEN)

Cognitive Engine (CEN)

rmi

sli

Service Level

Monitor (SLM)

Scanning Receiver Controller (SCC)

sci

ASQ

sci

Database

LPS

Scanning Receiver Subsystem (SCS)

Standardized interfaces, rest is proprietary

| C-PMSE PBA | 24th May 2011

STF386 StatusProactive behaviour

Stage withWireless Mics

Receivers

SCR-0SCR-1 SCR-2

SCR-3

Movement of interferer

Interferer

Doors

OutdoorIndoor

Foyer Entrance Hall

SCR-4

Roof

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


STF386 Status Link quality supervision

Quality of service

Time

Reactive scheme with cellular

QualityThreshold

Gradient DetectionNew proposed proactive scheme with C-PMSE

Action i.e. changeof RRM parameter

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)

Cellular

C-PMSE


STF386 Status Hierarchical database approach

Database at Regulator

Regional Database

Local DatabaseInside C-PMSE1

Local DatabaseInside C-PMSE2

More seldom updates Frequency

Manager Database

• 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

More accurateLocation info


Alignment with German C-PMSE Project2


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


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


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 companders actually 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...


Next Steps

3


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


Backup

What’s hot?

3


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).



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



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


ETSI STF386 on Cognitive PMSE Chairmen: Wolfgang Bilz & Prof. Georg Fischer Status and Next Steps...

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