C-PMSE Improving frequency utilization and coexistence for PMSE systems by cognitive procedures. Dr. Radu Circa (Bosch), Dr. Axel Schmidt (Sennheiser)
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1 Project Office C-PMSE Robert Bosch GmbH Sennheiser electronic GmbH & Co. KG c-pmse.research-project.de C-PMSE Improving frequency utilization and coexistence for PMSE systems by cognitive procedures A System Overview Dr. Radu Circa (Bosch), Dr. Axel Schmidt (Sennheiser) A research project in co-operation of industry and science Publicly sponsored by
2 Contents 1.) Motivation and Objectives 2.) C-PMSE Architecture 3.) Wireless Audio Link and Radio Link Manager 2
3 Motivation Digital dividend 1 reduces usable spectrum by 18% TV primary, PMSE secondary GMS/UMTS/LTE UL DL f [MHz] Digital Dividend 1 Future Mobile Communication (primary user) Remaining spectrum becomes open for new services like e. g. white space devices (WSD) => coexistence with new secondary services 3
4 Motivation Coexisting Services in UHF 470MHz 790MHz Broadcasting DVB-T /T2 DVB-H PMSE Communications IEEE (CR based WRAN PHY / MAC for use by license-exempt devices in TV white spaces, coverage range < 100km) ECMA-392 (CR based WLAN MAC / PHY for operation in TV white spaces) IEEE af (WiFi in TV white spaces) 3GPP LTE Advanced (Femtocells in UHF) 4
5 Motivation New Situation ti for PMSE Less remaining useable spectrum 470MHz 790MHz 862MHz DVB-H LTE-A WSD DVB-T LTE remaining UHF spectrum since 2011 New coexisting services with dynamic frequency allocation High potential of interfering with new TV band services due to their lower sensing sensitivity BUT no acceptance of audible interferences (even very short ones) 5
6 Objectives Guarantee of the well-proven operating reliability of PMSE Development elopment of a cognitive system stem demonstrator Platform for testing cognitive algorithms Platform for testing cognitive hardware Development of low cost sensing device Delivering measurement results to ETSI STF 386 6
7 C-PMSE Fundamentals Local Portofolio Manager Link Quality Indicator Base Station Content plane Mobile Terminal Control plane Scanning System Cognitive Master Radio Link Manager Service Level Agreements 7
8 System Architecture Scanning System Radio Link Manager Cognitive Master 8
9 The Radio Part Two main blocks Radio link manager (RLM) Wireless audio links 9
10 Radio Link Manager Functional block for managing wireless audio links 10
11 Wireless Audio Links Traditional FM link for high h quality low latency audio transmission i Additional wireless remote channel Measurement fixture for monitoring transmission quality 11
12 Radio Link Manager Start t Up 12
13 Radio Link Manager Start t Up (cont.) 13
14 Radio Link Manager Start t Up (cont.) 14
15 Radio Link Manager Operation Panic case 15
16 Radio Link Manager Operation User trigger case 16
17 Radio Link Manager Operation proactive case Proactive case 17
18 Conclusion New situation in spectrum occupancy and usage in UHF band New temporary broadband services like ECMA-392, LTE-Advanced, New services provided with a mechanism to reduce/avoid collisions with PMSE No protection against audible interference for state-of-the-art PMSE devices PMSE become cognitive to increase operating robustness New functionalities: LQI measurement Remote control channel for control of mobile terminals during operation Panic reaction triggered by LQI decrease Proactive reaction triggered by environment changes Additional scanning system to support proactive case Increase of interference detection probability Partitioning of operation area into several scanning clusters 18
19 Questions? Acknowledgement The C-PMSE project is co-funded by the German Federal Ministry of Economics and Technology (BMWi) 19
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