risk assessment and interference management adco r&tte risk assessment workshop 17th october...
TRANSCRIPT
Risk assessment and interference management
ADCO R&TTE Risk Assessment workshop
17th October 2013
Bruno Espinosa, ECO
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ECC: who we are
Avoiding interference: key elements
ECC and the risk assessment: Cooperation with ADCO Our understanding and views
ECC: our role
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ECC:•Spectrum allocation and technical conditions •48 member countries acting together•Technical expertise used by EC
Avoiding interference: typical scenario
Typical Scenario
Existing Service/System 1 New Service/System 2
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Avoiding interference : mechanisms
Transmitter spectrum mask (in-band and unwanted)
Blocking (receiver, selectivity)
Intermodulation (transmitter and receiver), typically IM3 at 2f1 ± f2 or 2f2 ± f1
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Avoiding interference: key factors
Interferer: mainly transmitter (emission characteristics, antenna,…) but associated receiver may have impact (e.g. power control).
Victim: mainly receiver but related transmitter has impact (e.g. on wanted signal).
Protection criteria: depend upon technology, application, interference scenario.
Physical factors: distance, propagation characteristics, shielding…
Most of these factors are variable. Probabilistic approach to assess interference, taking into account aggregation if
relevant.
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ADCO-ECC cooperation on risk assessment
June 2011 - Letter from ADCO: preliminary discussions within ECC and WG SE.
February/March 2012 - Letter from ADCO with additional details provided to WG SE: draft comments and views prepared by WG SE and approved by the ECC, 1 June 2012.
May 2013 - Letter from ADCO R&TTE: response by ECC in June 2013 providing additional comments and welcoming the workshop to exchange views.
Risk assessment: ECC understanding
Does not affect limits in Harmonised Standards. Apply the RAPEX procedure to non compliant products
presenting a serious risk to health, safety or other aspects of public interest protection such as radio and EMC.
Objective: define methodology and criteria to identify a non compliance as serious risk to be used by market surveillance.
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Risk assessment: ECC views
Definition of simple criteria is not straightforward. Strong interaction between interferer and victim in
interference assessment. Classification of interference related to the service and system
affected. Highest priority to safety related services. Preference for qualitative approach versus quantitative.
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www.cept.org/eco
www.cept.org/ecc
Thanks for your attention