WRC-07 AGENDA ITEMS OF INTEREST TO PASSIVE SERVICES WITH PARTICULAR EMPHASIS ON 1.2 AND 1.17 REGULATORY ISSUES REQUIRED ACTIVITIES CURRENT STATUS IN ITU-R

WRC-07 AGENDA ITEMS OF INTEREST TO WRC-07 AGENDA ITEMS OF INTEREST TO PASSIVE SERVICES WITH PARTICULAR PASSIVE SERVICES WITH PARTICULAR

EMPHASIS ON 1.2 AND 1.17EMPHASIS ON 1.2 AND 1.17

REGULATORY ISSUESREGULATORY ISSUESREQUIRED ACTIVITIESREQUIRED ACTIVITIESCURRENT STATUS IN ITU-RCURRENT STATUS IN ITU-R

Manfred Otter

WORK SHOP OF THE EUROPEAN SCIENCE FOUNDATION – CAGLIARI – 28-29 OCTOBER 2004

28-29 Oct. 2004 2ESF WORK SHOP - CAGLIARI

WRC-07 AGENDA ITEMS OF INTEREST TO EESS(PASSIVE)WRC-07 AGENDA ITEMS OF INTEREST TO EESS(PASSIVE)

1.2, 1.5, 1.6, 1.8, 1.17, (1.20)1.2, 1.5, 1.6, 1.8, 1.17, (1.20)

WRC-07 AGENDA ITEMS OF INTEREST TO RADIOASTRONOMYWRC-07 AGENDA ITEMS OF INTEREST TO RADIOASTRONOMY

1.5, 1.6, 1.7, 1.8, 1.17, (1.21)1.5, 1.6, 1.7, 1.8, 1.17, (1.21)


AGENDA ITEM 1.2 – REGULATORY ISSUES FOR 10.6 – 10.68 GHzAGENDA ITEM 1.2 – REGULATORY ISSUES FOR 10.6 – 10.68 GHz

The frequency band 10.6-10.68 GHz is allocated to the Earth exploration-satellite service (EESS) (passive), radio The frequency band 10.6-10.68 GHz is allocated to the Earth exploration-satellite service (EESS) (passive), radio

astronomy and space research (passive) services on a primary basisastronomy and space research (passive) services on a primary basis

Band is essential for measurements of land and sea surface temperatures, soil moisture, wind intensity and Band is essential for measurements of land and sea surface temperatures, soil moisture, wind intensity and

precipitation over sea in combination with other windows between 1 and 40 GHzprecipitation over sea in combination with other windows between 1 and 40 GHz

The frequency band 10.6-10.68 GHz is also allocated to the mobile, except aeronautical mobile, and the fixed services The frequency band 10.6-10.68 GHz is also allocated to the mobile, except aeronautical mobile, and the fixed services

on a primary basis, taking into account No. 5.482 which contains some limits on transmission characteristicson a primary basis, taking into account No. 5.482 which contains some limits on transmission characteristics

More than 30 countries do not apply these restrictions which may in any case not provide sufficient protection to More than 30 countries do not apply these restrictions which may in any case not provide sufficient protection to

EESS(passive) in accordance with Recommendation ITU-R SA.1029EESS(passive) in accordance with Recommendation ITU-R SA.1029

WRC-03 recognized in Resolution 742 that the EESS (passive) may experience harmful interference from unwanted WRC-03 recognized in Resolution 742 that the EESS (passive) may experience harmful interference from unwanted

emissions of systems of active services and that the provisions given in No. 5.482 may not be sufficient to ensure the emissions of systems of active services and that the provisions given in No. 5.482 may not be sufficient to ensure the

protection of the EESS (passive) in the band 10.6-10.68 GHzprotection of the EESS (passive) in the band 10.6-10.68 GHz

Measurements by the AMSR-E radiometer indicate already significant interference in geographically limited areas Measurements by the AMSR-E radiometer indicate already significant interference in geographically limited areas

well above the regulatory thresholdswell above the regulatory thresholds


AGENDA ITEM 1.2 – REGULATORY ISSUES FOR 36 - 37 GHzAGENDA ITEM 1.2 – REGULATORY ISSUES FOR 36 - 37 GHz

Consideration of Earth exploration-satellite (passive) service and space research (passive) service in Consideration of Earth exploration-satellite (passive) service and space research (passive) service in

accordance with Resolution 742 (WRC‑03)accordance with Resolution 742 (WRC‑03)

The frequency band 36-37 GHz is allocated to the Earth exploration-satellite service (EESS) The frequency band 36-37 GHz is allocated to the Earth exploration-satellite service (EESS)

(passive) and to the space research service (passive) on a primary basis(passive) and to the space research service (passive) on a primary basis

This band is also allocated to the fixed service and to the mobile service on a primary basisThis band is also allocated to the fixed service and to the mobile service on a primary basis

Information on Fixed Service point-to-multipoint systems is available but not on point-to-point Information on Fixed Service point-to-multipoint systems is available but not on point-to-point

systems operating in this bandsystems operating in this band

This band is not available for high-density applications in the fixed service (see No. 5.547)This band is not available for high-density applications in the fixed service (see No. 5.547)

WRC-03 recognized that EESS (passive) systems may experience harmful interference if a high WRC-03 recognized that EESS (passive) systems may experience harmful interference if a high

density of fixed-service stations is deployed in the band 36-37 GHz and that sharing criteria may density of fixed-service stations is deployed in the band 36-37 GHz and that sharing criteria may

need to be definedneed to be defined


AGENDA ITEM 1.2 – REQUIRED ACTIVITIES AGENDA ITEM 1.2 – REQUIRED ACTIVITIES

10.6 – 10.68 GHz10.6 – 10.68 GHz

● Interference criteria between the EESS (passive) and the space research (passive) service on one hand Interference criteria between the EESS (passive) and the space research (passive) service on one hand

and other primary services on the other hand need to be reviewed in the band 10.6-10.68 GHz and other primary services on the other hand need to be reviewed in the band 10.6-10.68 GHz

● The results of sharing studies shall be submitted to relevant ITU-R working parties, in particular 7CThe results of sharing studies shall be submitted to relevant ITU-R working parties, in particular 7C

● The objective should be the inclusion of the suitable sharing criteria in the Radio RegulationsThe objective should be the inclusion of the suitable sharing criteria in the Radio Regulations

36 – 37 GHz36 – 37 GHz

● Characteristics of active services operating or planning to operate in the band 36-37 GHz need to be Characteristics of active services operating or planning to operate in the band 36-37 GHz need to be

collected (currently only very few military applications expected to be deployed)collected (currently only very few military applications expected to be deployed)

● Sharing studies need to be conducted between the passive services and the fixed and mobile services Sharing studies need to be conducted between the passive services and the fixed and mobile services

in the band 36-37 GHz in order to define appropriate sharing criteriain the band 36-37 GHz in order to define appropriate sharing criteria

● The results of these studies shall be submitted to relevant ITU-R working parties, in particular 7CThe results of these studies shall be submitted to relevant ITU-R working parties, in particular 7C

● The objective should be the inclusion of suitable sharing criteria in the Radio RegulationsThe objective should be the inclusion of suitable sharing criteria in the Radio Regulations


AGENDA ITEM 1.2 – STATUS OF STUDIES AND CPM TEXTAGENDA ITEM 1.2 – STATUS OF STUDIES AND CPM TEXT

7 Contributions on 10.6 – 10.68 GHz to WP7C7 Contributions on 10.6 – 10.68 GHz to WP7C● Studies identified a lack of information on fixed service systems and need to be adjusted in line with information Studies identified a lack of information on fixed service systems and need to be adjusted in line with information

recently provided by WP9Drecently provided by WP9D

● Development of standard FS station deployment model is required for use in simulation studiesDevelopment of standard FS station deployment model is required for use in simulation studies

● Sensor antenna pattern (in particular on side lobes) has a significant impact on compatibilitySensor antenna pattern (in particular on side lobes) has a significant impact on compatibility

7 Contributions on 36 – 37 GHz to WP7C7 Contributions on 36 – 37 GHz to WP7C● Development of standard FS station deployment model is required for use in simulation studiesDevelopment of standard FS station deployment model is required for use in simulation studies

● Very limited use is currently made of this band by the FSVery limited use is currently made of this band by the FS

● Deployment of FS stations expected mainly in urban and sub-urban areasDeployment of FS stations expected mainly in urban and sub-urban areas

● Parametric approach considered most suitable in view of lack of actual FS data Parametric approach considered most suitable in view of lack of actual FS data

● Currently significant general resistance to inclusion of limits in the Radio RegulationsCurrently significant general resistance to inclusion of limits in the Radio Regulations

Some CPM has been recently draftedSome CPM has been recently drafted


SENSOR ANTENNA PATTERNS FORSENSOR ANTENNA PATTERNS FOR MULTIPLE INTERFERENCE MULTIPLE INTERFERENCE SOURCES OR DYNAMIC CONSTELLATIONSSOURCES OR DYNAMIC CONSTELLATIONS

-30

-25

-20

-15

-10

-5

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0 5 10 15 20 25 30 35 40 45 50 55

off-axis angle (deg.)

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App. 8S.672PDNRF.1245

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30

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0 0.5 1 1.5 2

off-axis angle (deg.)

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AGENDA ITEM 1.5 – REGULATORY ISSUESAGENDA ITEM 1.5 – REGULATORY ISSUES

Agenda Item 1.5 – Impact of Search for Spectrum in accordance with Resolution 230Agenda Item 1.5 – Impact of Search for Spectrum in accordance with Resolution 230

WRC-03 decided to consider spectrum requirements and possible additional spectrum allocations for WRC-03 decided to consider spectrum requirements and possible additional spectrum allocations for

aeronautical telecommand and high bit-rate aeronautical telemetry, in accordance with aeronautical telecommand and high bit-rate aeronautical telemetry, in accordance with

Resolution 230 (WRC‑03).Resolution 230 (WRC‑03).

There is a need to provide global spectrum to the mobile service for wideband aeronautical telemetry There is a need to provide global spectrum to the mobile service for wideband aeronautical telemetry

systems together with a need for additional spectrum required to meet future wideband aeronautical systems together with a need for additional spectrum required to meet future wideband aeronautical

telemetry demandstelemetry demands

A number of bands between 3 GHz and 30 GHz are already allocated to the mobile service, without A number of bands between 3 GHz and 30 GHz are already allocated to the mobile service, without

excluding the aeronautical mobile service, on a secondary basisexcluding the aeronautical mobile service, on a secondary basis

There are emerging telemetry systems with large data transfer requirements to support testing of There are emerging telemetry systems with large data transfer requirements to support testing of

commercial aircraft and other airframes.commercial aircraft and other airframes.

Studies need to be monitored which may have an impact on passive bands in the range 3 to 30 GHz Studies need to be monitored which may have an impact on passive bands in the range 3 to 30 GHz

as potential candidate bands for aeronautical mobile telemetry systems, in particular those which as potential candidate bands for aeronautical mobile telemetry systems, in particular those which

have already an allocation to the mobile service. have already an allocation to the mobile service.



Agenda Item 1.6 – Impact of Search for Spectrum for allocations to the Aeronautical Mobile Agenda Item 1.6 – Impact of Search for Spectrum for allocations to the Aeronautical Mobile

service service

WRC-03 decided to consider frequency allocations for the aeronautical mobile (R) service in WRC-03 decided to consider frequency allocations for the aeronautical mobile (R) service in

parts of the bands between 108 MHz and 6 GHz in accordance with Resolution 414 (WRC-parts of the bands between 108 MHz and 6 GHz in accordance with Resolution 414 (WRC-

03)03)

Review of current satellite frequency allocations in support of moderization of civil aviation Review of current satellite frequency allocations in support of moderization of civil aviation

telecommunication systems, taking into account Resolution 415 (WRC-03)telecommunication systems, taking into account Resolution 415 (WRC-03)

Detailed plans not yet known but probably no impact on passive servicesDetailed plans not yet known but probably no impact on passive services

Relevant studies need to be monitoredRelevant studies need to be monitored


AGENDA ITEM 1.7 – REGULATORY ISSUES AND STATUSAGENDA ITEM 1.7 – REGULATORY ISSUES AND STATUS

Agenda Item 1.7 – Protection of the Space Research (passive) service around 1668 MHzAgenda Item 1.7 – Protection of the Space Research (passive) service around 1668 MHz

Agenda item 1.7 will Agenda item 1.7 will consider the results of ITU-R studies regarding sharing between the mobile-consider the results of ITU-R studies regarding sharing between the mobile-

satellite service and the space research service (passive) in the band 1 668-1 668.4 MHz, and between satellite service and the space research service (passive) in the band 1 668-1 668.4 MHz, and between

the mobile-satellite service and the mobile service in the band 1 668.4-1 675 MHz in accordance with the mobile-satellite service and the mobile service in the band 1 668.4-1 675 MHz in accordance with

Resolution 744 (WRC‑03)Resolution 744 (WRC‑03)

In the past, a space research missions from Japan has used this band for VLBI applications as part of In the past, a space research missions from Japan has used this band for VLBI applications as part of

radio-astronomy observationsradio-astronomy observations

Another system from Russia (Radio-Astron) is prepared and waiting for launchAnother system from Russia (Radio-Astron) is prepared and waiting for launch

Similar applications may make use of this band in futureSimilar applications may make use of this band in future

Studies submitted to ITU-R need to be monitored to assure that no undue constraints are imposed on Studies submitted to ITU-R need to be monitored to assure that no undue constraints are imposed on

the space research (passive) service. the space research (passive) service.



Protection of EESS(passive) near 31.3 GHz from potential HAPS uplink transmissionsProtection of EESS(passive) near 31.3 GHz from potential HAPS uplink transmissions

The 31.3-31.8 GHz band is allocated to the radio astronomy, Earth exploration‑satellite (passive) and The 31.3-31.8 GHz band is allocated to the radio astronomy, Earth exploration‑satellite (passive) and

space research (passive) servicesspace research (passive) services

Technical sharing and regulatory provisions for the application of HAPS stations operating in the Technical sharing and regulatory provisions for the application of HAPS stations operating in the

bands 27.5-28.35 GHz and 31‑31.3 GHz in response to Resolution 145 (WRC‑03) for Region 2bands 27.5-28.35 GHz and 31‑31.3 GHz in response to Resolution 145 (WRC‑03) for Region 2

WRC-03 amended No. 5.543A to specify unwanted emission levels that would protect satellite passive WRC-03 amended No. 5.543A to specify unwanted emission levels that would protect satellite passive

services (–106 dB(W/MHz) under clear-sky conditions) and included protection requirements for the services (–106 dB(W/MHz) under clear-sky conditions) and included protection requirements for the

radio astronomy serviceradio astronomy service

Pending the completion of further studies, administrations in Region 2 can consider deployment of Pending the completion of further studies, administrations in Region 2 can consider deployment of

HAPS systems in the fixed service in 300 MHz of spectrum at 31-31.3 GHz under the protection HAPS systems in the fixed service in 300 MHz of spectrum at 31-31.3 GHz under the protection

criteria of No. 5.543Acriteria of No. 5.543A


AGENDA ITEM 1.8 – STATUSAGENDA ITEM 1.8 – STATUS

No. 5.543A provides a good basis for proper long term protection of passive sensors No. 5.543A provides a good basis for proper long term protection of passive sensors

operating in the band 31.3-31.8 GHz as well as for the radio astronomy serviceoperating in the band 31.3-31.8 GHz as well as for the radio astronomy service

USA was never happy with the first unwanted emission limits in the Radio Regulations USA was never happy with the first unwanted emission limits in the Radio Regulations

and attempts may be expected to soften or replace No. 5.543Aand attempts may be expected to soften or replace No. 5.543A

It is important to maintain No. 5.543A, in particular as it contains the first unwanted It is important to maintain No. 5.543A, in particular as it contains the first unwanted

emission specifications in the Radio Regulations which could open the door for others to emission specifications in the Radio Regulations which could open the door for others to

followfollow

Additional studies carried out within ITU-R and text proposed for inclusion into the Additional studies carried out within ITU-R and text proposed for inclusion into the

CPM report should be monitored with the objective to avoid any changes to No. 5.543ACPM report should be monitored with the objective to avoid any changes to No. 5.543A



Agenda item 1.17 will consider the results of ITU-R studies on compatibility between the fixed-satellite service and Agenda item 1.17 will consider the results of ITU-R studies on compatibility between the fixed-satellite service and

other services around 1.4 GHz, in accordance with Resolution 745 (WRC‑03)other services around 1.4 GHz, in accordance with Resolution 745 (WRC‑03)

The band 1 400-1 427 MHz is allocated to the Earth exploration-satellite service (EESS) (passive), radio astronomy The band 1 400-1 427 MHz is allocated to the Earth exploration-satellite service (EESS) (passive), radio astronomy

and space research (passive) services on a primary basis in all Regionsand space research (passive) services on a primary basis in all Regions

WRC-03 adopted secondary allocations for feeder links for the non‑geostationary (non‑GSO) systems in the mobile-WRC-03 adopted secondary allocations for feeder links for the non‑geostationary (non‑GSO) systems in the mobile-

satellite service (MSS) in the bands 1390 - 1392 and 1430 - 1432 MHzsatellite service (MSS) in the bands 1390 - 1392 and 1430 - 1432 MHz

Studies in ITU‑R are incomplete for a number of services, including the EESS (passive) and space researchStudies in ITU‑R are incomplete for a number of services, including the EESS (passive) and space research

WRC-03 decided that the additional allocations to the FSS on a secondary basis in the bands 1 390-1 392 MHz and WRC-03 decided that the additional allocations to the FSS on a secondary basis in the bands 1 390-1 392 MHz and

1 430-1 432 MHz for feeder links shall not be used until the completion of ITU‑R studies on all identified compatibility 1 430-1 432 MHz for feeder links shall not be used until the completion of ITU‑R studies on all identified compatibility

issuesissues

The results of these studies shall be reported to WRC‑07 and relevant decisions should be taken by WRC‑07 The results of these studies shall be reported to WRC‑07 and relevant decisions should be taken by WRC‑07

accordinglyaccordingly


AGENDA ITEM 1.17 – STUDIES AND STATUSAGENDA ITEM 1.17 – STUDIES AND STATUS

Almost 10 contributions have already been submitted to ITU-R Working Party 8DAlmost 10 contributions have already been submitted to ITU-R Working Party 8D

Agreements have been obtained between Working Parties 7C and 8D on suitable apportioning of interference for MSS Agreements have been obtained between Working Parties 7C and 8D on suitable apportioning of interference for MSS

feeder links taking into account their secondary status and the co-existance of other interference sources with a feeder links taking into account their secondary status and the co-existance of other interference sources with a

primary statusprimary status

Dynamic computer simulation models have been used to derive statistical distributions of interference levelsDynamic computer simulation models have been used to derive statistical distributions of interference levels

Hardware design and test measurement reports showed that very stringent attenuation levels can be met with Hardware design and test measurement reports showed that very stringent attenuation levels can be met with

appropriate pulse shaping and tight hardware performance specifications, if necessary in conjunction with a post appropriate pulse shaping and tight hardware performance specifications, if necessary in conjunction with a post

amplifier filteramplifier filter

Three working documents on PDNRs are currently maintained within Working Party 8D which specify appropriate Three working documents on PDNRs are currently maintained within Working Party 8D which specify appropriate

protection levels for passive services and related unwanted emission requirements for the MSS feeder linksprotection levels for passive services and related unwanted emission requirements for the MSS feeder links

Draft CPM text has been prepared based on protection requirements for passive servicesDraft CPM text has been prepared based on protection requirements for passive services


STUDY RESULTS FOR MSS UPLINKS IN THE BAND 1390 – 1392 MHzSTUDY RESULTS FOR MSS UPLINKS IN THE BAND 1390 – 1392 MHz

1.E-06

1.E-05

1.E-04

1.E-03

1.E-02

1.E-01

1.E+00

-160 -150 -140 -130 -120 -110 -100 -90

Interference Density Level Io in Receiver in dB(W/27MHz)

Pro

ba

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ty o

f ex

cess

Combined Io for Hydros - MSS systems Q+L+M+S

Combined Io for SMOS 40 dBi - MSS systems Q+L+M+S




STUDY RESULTS FOR MSS DOWNLINKS IN THE BAND 1430 – 1432 MHzSTUDY RESULTS FOR MSS DOWNLINKS IN THE BAND 1430 – 1432 MHz

1.E-07

1.E-06

1.E-05

1.E-04

1.E-03

1.E-02

1.E-01

1.E+00

-170 -160 -150 -140 -130 -120 -110 -100

Interference Density Level Io in Receiver in dB(W/27MHz)

Pro

ba

bil

ity

of

ex

ce

ss

Io for Hydros 35dBi - 26 satellites - Q at 670 km

Io for SMOS 40dBi - 26 satellites - Q at 670 km




PROTECTION REQUIREMENTS FOR EESS(PASSIVE)PROTECTION REQUIREMENTS FOR EESS(PASSIVE)

In order to protect EESS(passive) in the band 1400 – 1427 MHz, unwanted emissions of MSS In order to protect EESS(passive) in the band 1400 – 1427 MHz, unwanted emissions of MSS

feeder links should not exceed the following power levels in the band 1400 1427 MHzfeeder links should not exceed the following power levels in the band 1400 1427 MHz ::

● ––63 dBW at the antenna port of the MSS feeder link Earth station 63 dBW at the antenna port of the MSS feeder link Earth station

● ––46 dBW at the antenna port of the MSS satellite 46 dBW at the antenna port of the MSS satellite

The actual required attenuation for a typical 100 kHz signal is 97 dB for the MSS uplinks and The actual required attenuation for a typical 100 kHz signal is 97 dB for the MSS uplinks and

70 dB on the MSS downlinks70 dB on the MSS downlinks

Such a high unwanted emission attenuation levels are considered feasible if modulation Such a high unwanted emission attenuation levels are considered feasible if modulation

techniques with appropriate pulse shaping and tight hardware performance specifications are techniques with appropriate pulse shaping and tight hardware performance specifications are

used, if necessary in conjunction with a post amplifier filterused, if necessary in conjunction with a post amplifier filter


PROTECTION REQUIREMENTS FOR THE RADIO ASTRONOMY SERVICEPROTECTION REQUIREMENTS FOR THE RADIO ASTRONOMY SERVICE

The following pfd limits shall be respected by each satellite of an MSS network (draft CPM text):The following pfd limits shall be respected by each satellite of an MSS network (draft CPM text):

● a pfd limit of –201 dBW/m² in 20 kHz at each radio astronomy station conducting spectral line a pfd limit of –201 dBW/m² in 20 kHz at each radio astronomy station conducting spectral line

observations in this band, andobservations in this band, and

● a pfd limit of –185 dBW/m² in 27 MHz at each radio astronomy station conducting continuum a pfd limit of –185 dBW/m² in 27 MHz at each radio astronomy station conducting continuum

observations in this bandobservations in this band

Laboratory tests carried out by one MSS operator have shown that it was possible to achieve Laboratory tests carried out by one MSS operator have shown that it was possible to achieve

attenuation values of more 90 dB below the maximum spectrum density in the entire passive band attenuation values of more 90 dB below the maximum spectrum density in the entire passive band

without any post-amplifier filteringwithout any post-amplifier filtering

Internal MSS multiplexer attenuation requirements will provide additional assurance to passive Internal MSS multiplexer attenuation requirements will provide additional assurance to passive

services that the required unwanted emission levels will have to be metservices that the required unwanted emission levels will have to be met

Current studies within ITU-R indicate separation distances between MSS feeder uplink stations and Current studies within ITU-R indicate separation distances between MSS feeder uplink stations and

radio astronomy stations of around 30 kmradio astronomy stations of around 30 km



Recommendation ITU‑R SM.1633 provides a list of band-pairs and a methodology for conducting the compatibility Recommendation ITU‑R SM.1633 provides a list of band-pairs and a methodology for conducting the compatibility

studies between active and passive services operating in adjacent and nearby bands studies between active and passive services operating in adjacent and nearby bands

WRC-03 recognized that Recommendation ITU‑R SM.1633 does not address all band-pairs where compatibility WRC-03 recognized that Recommendation ITU‑R SM.1633 does not address all band-pairs where compatibility

analyses need to be conductedanalyses need to be conducted

The general limits in Appendix 3 may be insufficient in protecting the EESS (passive) in specific bands The general limits in Appendix 3 may be insufficient in protecting the EESS (passive) in specific bands

Most of the frequency bands effected are very important for vertical sounding considering in particular the AMSU Most of the frequency bands effected are very important for vertical sounding considering in particular the AMSU

and MHS instrumentsand MHS instruments

WRC-03 considered it necessary to ensure an equitable burden sharing for achieving compatibility between active and WRC-03 considered it necessary to ensure an equitable burden sharing for achieving compatibility between active and

passive servicespassive services

Passive bands effected:Passive bands effected:

● 1400 – 1427 MHz1400 – 1427 MHz

● 23.6 – 24 GHz23.6 – 24 GHz

● 31.3 – 31.5 GHz31.3 – 31.5 GHz

● 50.2 – 50.4 GHz50.2 – 50.4 GHz

● 52.6 – 54.25 GHz52.6 – 54.25 GHz


SUMMARY AND CONCLUSIONSSUMMARY AND CONCLUSIONS

ADEQUATE PROTECTION OF EESS(passive) MAY BE CRITICAL - FIXED SERVICE ADEQUATE PROTECTION OF EESS(passive) MAY BE CRITICAL - FIXED SERVICE

DEPLOYMENT MODELS AND SENSOR ANTENNA PATTERNS WILL PLAY A MAJOR ROLEDEPLOYMENT MODELS AND SENSOR ANTENNA PATTERNS WILL PLAY A MAJOR ROLE

CURRENTLY NO THREATING ACTIVITIES ON AGENDA ITEMS 1.5 AND 1.6CURRENTLY NO THREATING ACTIVITIES ON AGENDA ITEMS 1.5 AND 1.6

WORK HAS JUST STARTED ON AGENDA ITEM 1.7 BASED ON RADIO-ASTRONWORK HAS JUST STARTED ON AGENDA ITEM 1.7 BASED ON RADIO-ASTRON

LITTLE ACTIVITY ON AGENDA ITEM 1.8 – EXISTING FOOTNOTE PROVIDES ADEQUATE LITTLE ACTIVITY ON AGENDA ITEM 1.8 – EXISTING FOOTNOTE PROVIDES ADEQUATE

PROTECTION AND SHALL BE MAINTAINED BY ALL MEANSPROTECTION AND SHALL BE MAINTAINED BY ALL MEANS

VERY INTENSE ACTIVITIES ON AGENDA ITEM 1.17 (DRAFT CPM TEXT PROVIDING MOST VERY INTENSE ACTIVITIES ON AGENDA ITEM 1.17 (DRAFT CPM TEXT PROVIDING MOST

LIKELY ADEQUATE PROTECTION OF PASSIVE SERVICES)LIKELY ADEQUATE PROTECTION OF PASSIVE SERVICES)

DIFFICULT AND INTENSIVE ACTIVITIES ON AGENDA ITEMS 1.20 AND 1.21DIFFICULT AND INTENSIVE ACTIVITIES ON AGENDA ITEMS 1.20 AND 1.21

Documents

WRC-07 AGENDA ITEMS OF INTEREST TO PASSIVE SERVICES WITH PARTICULAR EMPHASIS ON 1.2 AND 1.17 REGULATORY ISSUES REQUIRED ACTIVITIES CURRENT STATUS IN ITU-R