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PT1_40
Last update: 22-03-2023
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ECC Report
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Compatibility between MFCN operating in 3400-3800 MHz and Radio Altimeters (RA) operating in 4200-4400 MHz
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FM60_01
PT1_47
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Assessment of susceptibility of deployed RA receivers operating in 4200-4400 MHz, while taking into account any civil aviation initiatives on improving RA receivers, in order to study the following compatibility scenarios:
1) Unwanted emissions from MFCN operating in 3400-3800 MHz into 4200-4400 MHz radio altimeters band
2) Impact of blocking of radio altimeters from 3400-3800 MHz MFCN in-band emissions
Note: the results of this study could trigger further actions as appropriate from ECC or other entities.
Provide relevant long term MFCN operational parameters in 3.4-3.8 GHz for the development of future MOPs by RTCA/EUROCAE for resilient radio altimeters.
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S: 05-03-2021
T: 08-11-2024
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It is recognised that realistic scenarios and parameters for RA and MFCN AAS parameters are needed before compatibility studies can be commenced.
Based on the results of the study, consider the need for possible future steps, e.g. improvement of RA susceptibility to interference, in particular regarding blocking characteristics.
It is to be noted that radio altimeters are used globally and once installed they are used over many years. Therefore, development of future MOPS(Minimum Operational Performance Standards) for RA should be forward-looking as well as considering the various 5G MFCN deployments already existing in frequency bands both below 4.2 GHz as well as above 4.4 GHz, in both Europe and globally.
Once the
long-term MOPS are available (currently expected in 2024) the studies
undertaken so far will be assessed and updated as needed. This could be a
separate study under a different timeline from the current WI timeline, or a
new WI.
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In Progress
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PT1_47
Last update: 18-01-2024
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CEPT Report
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Feasibility and sharing studies on the shared use of the 3.8-4.2 GHz frequency band by terrestrial wireless broadband systems providing local-area (i.e. low/medium power) network connectivity (Task 1 of the EC Mandate)
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FM60_01
PT1_40
SE24_76
FM60_02
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Study and assess the technical feasibility of the shared use of the 3.8-4.2 GHz frequency band by terrestrial wireless broadband systems providing local-area (i.e. low/medium power) network connectivity. In this regard, consider sharing solutions, including innovative features, which ensure:
- protection and the future evolution and development of incumbent users sharing this band, in particular receiving satellite earth stations and terrestrial fixed links;
- coexistence of terrestrial wireless broadband systems providing local-area network connectivity and uses operating in adjacent bands such as terrestrial systems providing wireless broadband electronic communications services in the 3.4-3.8 GHz frequency band and radio altimeters on board aircraft in the 4.2-4.4 GHz frequency band.
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S: 04-03-2022
T: 18-10-2024
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Protection and future evolution and development of incumbent users, such as earth stations and fixed links.
Coexistence with applications in adjacent bands, such as MFCN in 3.4-3.8 GHz and radio altimeters in 4.2-4.4 GHz.
PT1 will assist WG FM in defining the harmonised technical conditions, possibly a BEM.
Meetings of PT1 and WG FM on this topic should take place in the same week and at the same location.
Interim Report: 11/2022
Technical
studies to be made available to FM60:
- Preliminary results in September 2023.
- Stable studies at the latest in February 2024.
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In Progress
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PT1_48
Last update: 19-01-2024
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Rev. ECC Recommendation
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Cross-border
coordination for 2300-2400 MHz
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Revise ECC
Recommendation (14)04 on Cross-border coordination for mobile/fixed
communications networks (MFCN) and between MFCN and other systems in the
frequency band 2300-2400 MHz to take into account introduction of Active
Antenna Systems (AAS) for 5G New Radio (NR) as well as LTE, and also review the
existing guidelines for non-AAS
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S: 18-11-2022
T: 03-06-2024
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In Progress
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PT1_50
Last update: 22-03-2023
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ECC Report
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Feasibility
and sharing studies on the potential shared use of the 6425-7125 MHz frequency
band between MFCN and Wireless
Access Systems including Radio Local Area Networks (WAS/RLAN).
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SE45_04
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Study possible technical conditions for the
potential shared use of the band 6425-7125 MHz between MFCN and Wireless Access
Systems including Radio Local Area Networks (WAS/RLAN). This would include investigation
on sharing mechanisms/rules, and a range of sharing scenarios based on various
deployment assumptions.
Close
collaboration is needed between ECC PT1 and WG SE / PT SE45. ECC PT1 should
provide MFCN parameters (a range of parameters, including macro Base Stations aligned
with characteristics used in the WRC-23 studies) and WG SE / PT SE 45 should
provide suitable RLAN parameters (ref. work item SE45_04).
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S: 10-03-2023
T: 07-03-2025
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Possible further work related to the protection of incumbents would be further assessed, if necessary, at a later stage.
The work under this work item here should not be considered as a decision on the future use of 6425-7125 MHz frequency band.
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In Progress
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PT1_35
Last update: 02-05-2023
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ECC Recommendation , ECC Report
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Modelling of 5G AAS commercially available equipment
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SE21_25
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Investigate the modelling of 5G AAS (both in-band and unwanted domain) based on laboratory and other measurements as appropriate of commercially available equipment:
1) Assess existing models against measurements
2) Consider modifications to existing model if differences are seen
3) If modification is not feasible then develop new model
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S: 03-07-2020
T:
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ECC Report first, then if appropriate a Recommendation
This task should investigate the modelling aspects of 5G AAS:
1) in the in-band domain
2) in the unwanted domain
The model should cover the relevant aspects of real antenna system (e.g. grating lobes) based on the results of laboratory measurements of 5G AAS.
The WI to be done to provide technical support to SE21 in regards to WI SE21_25.
See also relevant work ITU-R WP5D.
WI to be done in cooperation with SE and SE21.
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On Hold
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