CEPT Spectrum Management Actions Related to Automotive

Report
Status Report of CEPT Spectrum Management Actions
Related to Automotive/Vehicular Radars
Thomas Weber, ECO Spectrum Management
360° Surround Automotive Radar, 7-9 May 2012
Content
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Automotive/Vehicular radar frequencies
Current Revision of the Regulations
ERC Recommendation 70-03 Annex 5
Withdrawal ECC/DEC/(02)01
World Radio Conference 2015
Applicable CEPT/ECC Reports
Wireless Medical Applications - Frequencies
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Frequencies for vehicular/ automotive radars are identified in ERC
Recommendation 70-03 Annex 5.
– This Annex 5 covers frequency bands and regulatory as well as
informative parameters recommended for Road Transport and
Traffic Telematics (RTTT) including all types of vehicle
communications between vehicles (e.g. car-to-car), and
between vehicles and fixed locations (e.g. car-to-infrastructure)
as well as radar system installations to be used in ground
based vehicles.
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They are regulated by ERC Recommendation 70-03 (Annex 5) and
by ECC Decision 2004/545/EC for 79 GHz and in EC Decision
2005/50/EC, amended by 2011/485/EU, for 24 GHz.
Current Revisions in CEPT in relation to Automotive Radars
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ERC Recommendation 70-03 Annex 5 – approved (27 April 2012)
ECC Decision (04)10 – for approval by ECC in May 2012
Withdrawal of ECC Decision (02)01 - in public consultation (76-77
GHz included)
76-77 GHz railway radars in ERC Rec. 70-03 Annex 4 – in public
consulation
Fifth Update of the EC Decision for SRD (EC wants CEPT to
investigate widening of the scope of ERC REC 70-03 Annex 5
applications) – EC Decision 2006/771/EC -> incl. 76-77 GHz
ERC Recommendation 70-03 Annex 5
Vehicular/Automotive Radars - SRR
d1
21.65-26.65 GHz
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*
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ECC/DEC/(04)10
d2
24.25 -26.65 GHz
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*
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ECC/DEC/(04)10
e
77-81 GHz
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*
*
ECC/DEC/(04)03
For automotive Short Range Radars (SRR)
* See detailed requirements in related ECC
Decision. New SRR equipment may only be placed
onto the market until 1 July 2013
For automotive Short Range Radars (SRR)
See detailed requirements in related ECC Decision.
SRR equipment may only be placed onto the market
until 1 January 2018. This date is extended by 4
years for SRR equipment mounted on motor
vehicles for which vehicle conformity compliance
has been granted before 1 January 2018
For automotive Short Range Radars (SRR)
* See detailed requirements in related ECC
Decision
Comparable technical specifications to those given in these ECC Decision are
given in EC Decision 2004/545/EC for 79 GHz and in EC Decision
2005/50/EC, amended by 2011/485/EU, for 24 GHz.
Harmonised EU Standards under the R&TTE Directive: EN 302 288 (24 GHz)
and EN 302 264 (79 GHz) -> Installation Requirements
ERC Recommendation 70-03 Annex 5
Vehicular Radars – LRR - and fixed installed radars
c
76-77 GHz
55 dBm peak
e.i.r.p.
No requirement
No
spacing
50 dBm average power or 23.5 dBm average
power for pulse radar only.
For vehicle radars
The frequency band is also included in Annex 4
Also used by fixed installed radars at railway level crossings (Annex 4 of REC 70-03):
d
76-77 GHz
55 dBm peak
e.i.r.p.
No requirement
No
spacing
Obstruction/Vehicle detection via radar Sensor
at railway level crossings
50 dBm average power or 23.5 dBm average
power for pulse radar
The frequency band is also included in Annex 5
Other fixed radar installations would need spectrum engineering studies with
positive conclusions in the CEPT before they could be allowed (Risk of
interference to vehicular radars -> evidence provided by the Mozarim Study).
Both applications covered by ETSI EN 301 091 (under revision) – Installation
Requirements for fixed radars
ERC Recommendation 70-03 Annex 5
Narrowband Radars
f1
24.050-24.075 GHz
f2
24.075-24.150 GHz
100 mW
e.i.r.p.
0.1mW e.i.r.p.
100 mW
e.i.r.p.
No requirement
For vehicle radars
No requirement
 4µs/40kHz dwell
time every 3ms
For vehicle radars
For automotive radars
The spectrum access and mitigation requirement is
given for devices mounted behind a bumper. If
mounted without a bumper, the requirement should
be 3µs/40kHz maximum dwell time every 3ms.
 1ms/40kHz
dwell time every
40ms
f3
24.150-24.250 GHz
100mW e.i.r.p.
No requirement
A requirement for minimum frequency modulation
range (applicable to FMCW or step frequency
signals) or minimum instantaneous bandwidth
(applicable to pulsed signal) of 250 kHz applies in
addition to the requirement on maximum dwell time
For automotive radars
The spectrum access and mitigation requirement is
given for devices mounted either behind a bumper
or mounted without a bumper.
A requirement for minimum frequency modulation
range (applicable to FMCW or step frequency
signals) or minimum instantaneous bandwidth
(applicable to pulsed signal) of 250 kHz applies in
addition to the requirement on maximum dwell time
For vehicle radars
Restrictions in 24.075-24.150 GHz: compatibility with speed radars
ETSI EN 301 858
ERC Recommendation 70-03 Annex 5
Wideband Low Activity Mode (WLAM)
g1
g2
g3
24.250-24.495
GHz
24.495-24.500
GHz
24.250-24.500
GHz
-11 dBm
e.i.r.p
-8 dBm e.i.r.p
+20 dBm
e.i.r.p.
+16 dBm
e.i.r.p.
 0.25%/s/25 MHz
duty cycle
 1.5%/s/25 MHz
duty cycle
 5.6%/s/25 MHz
duty cycle
 2.3%/s/25 MHz
duty cycle
For automotive radars
The activity of the Wideband Low Activity Mode
(WLAM) is limited to avoid the risk of interference
and this mode is only activated in specific
configurations as a complementary to designation f1,
f2 and f3 as described in ECC Report 164.
Complementary to Narrowband Radars
The wider bandwidth will be only activated in specific driving conditions, i.e. for
pedestrian safety.
ETSI EN 301 858 (under revision to include WLAM)
Next World Radio Conference WRC-15
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WRC-12 concluded on a new agenda item for WRC-15:
– AI 1.18: to consider a primary allocation to the radiolocation service for
automotive applications in the 77.5 – 78 GHz range in accordance with
Resolution COM6/23 (WRC-12)
– COM6/23:76-77 GHz and 77-81 GHz most suitable bands for SRR in the
future
– 76-77.5 GHz and 78-81 GHz are already allocated to the radiolocation
service worldwide on a primary basis
– This gives SRR applications protection
Applicable CEPT/ECC Reports
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24 GHz
– ECC Report 134
– CEPT Report 38
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76-77 GHz
– ERC Report
– CEPT Reports 35, 36, and 37
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77-81 GHz
– CEPT Reports 03, 46, and 37
– ECC Report 56
Where to find information
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EFIS Database (www.efis.dk): one can search and compare the regulations
from 41 European countries. The database contains all the related documents
(EC Decision, ECC/ERC Decisions and Recommendations, ETSI SRDocs
and Harmonised European Standards), see under European Common
Allocation Table, ECA, which is integrated in the EFIS database.
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Information about the ETSI-ECC-EC Process: http://www.cept.org/ecc/aboutecc/ecc-etsi (in case of new harmonisation measures needed)
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ECO: see under http://www.cept.org/eco/about-eco
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Inside the ECC, it’s the WGFM SRD/MG and WGSE SE24 dealing with
vehicular radars (www.cept.org).
CONTACT ECO
ECO
Thomas Weber
Nansensgade 19-3
1366 Copenhagen
Denmark
Tel: +45 33 89 63 00
Fax: +45 33 89 63 30
Spectrum Management
[email protected]
[email protected]
Tel: +45 33 89 63 12

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