1
Introduction
2 Scope of the Report
3 Sharing studies
4 Potential
interference mitigation techniques
5 Conclusions
6 Definitions and abbreviations
6.1
Definitions
6.2
Abbreviations
Annex 1 Compatibility between the radiolocation service and
IMT-Advanced systems operating in the mobile service in the
3 400-3 700 MHz band Study A
1 Introduction
2 Technical aspect and parameters
2.1
IMT-Advanced parameters for interference analysis
2.2
Radiolocation systems
2.2.1 Parameters for
interference analysis
2.2.2 Protection criteria
2.3
Antenna radiation pattern estimation
3 Scenarios for conducting aggregate interference
studies
3.1 Radar
and IMT-Advanced deployment scenario
3.2
Radar location
3.2.1 Land-based radar B
3.2.2 Shipborne radar A
3.2.3 Airborne radar
3.3
Considered spectrum allocation
4 Simulation Methodology
4.1 The
method for calculating interference-to-noise ratio at radar receiver input
4.2
Propagation factors
4.2.1 Land-based radar B
and shipborne radar A
4.2.2 Airborne radar
5 Result
5.1
Interference from IMT-Advanced systems to radars
5.2
Required separation distance for the interference from radars into
Macro IMT‑Advanced base station in co-channel
6 Conclusions of Study A
Study B Range separation
1 Introduction
2 IMT-Advanced
technical characteristics
2.1
IMT-Advanced system parameters
3 Radiolocation
systems technical characteristics
3.1
Shipborne radar systems
3.2
Airborne radar systems
3.3
Land-based radar systems
3.4 Radiolocation
service protection criteria
4 Interference
assessment of IMT-Advanced systems into radiolocation service
4.1 Analysis
scenario and input parameters
4.2
Aggregate IMT-Advanced Interference to Radiolocation Results
4.2.1 Aggregate
interference results for 150 total IMT-Advanced base stations
4.2.2 Aggregate
interference results for 300 total IMT-Advanced base stations
4.2.3 Additional Interference Results
4.2.4 Separation distance
interference results for 300 total IMT-Advanced case stations
5 Interference
from radars into IMT-Advanced stations
5.1
Front-end overload
5.2 Radar
transmitter emission coupling
5.3
Interference assessment of radar to IMT-Advanced
5.4
Results
5.5
Additional scenarios
6 Conclusions
6.1
IMT-Advanced systems to radiolocation systems co- and off-tuned frequency
interference simulation conclusions
6.2
Radar to IMT-Advanced co- and off- tuned frequency interference
simulation conclusions
Annex 2 Adjacent channel compatibility between the radiolocation
service and IMT-Advanced systems operating in 3 400-3 700 MHz band
Study A Frequency separation
1 Introduction
2 Parameters
3 Interference
assessment between IMT-Advanced systems and radiolocation
service
3.2
Interference assessment
4 Analysis
scenario and input parameters
5 Results
5.1 Required
frequency separation on the interference from IMT-Advanced into radar in
adjacent channel
5.2 Required
frequency separation for the interference from radars into IMT-Advanced in
adjacent channel
6 Conclusions of Study A
Study B Frequency separation
1 Introduction
2 Radiolocation
systems technical characteristics
2.1
Radiolocation service protection criteria
3 Interference
assessment of IMT-Advanced systems into radiolocation service
4.1 Analysis
scenario and input parameters
4.2
Results
5 Conclusions
Annex 3 Potential interference mitigation techniques
Study A
1 General
consideration
2 Specific
mitigation techniques
2.1 DFS
Example DFS:
2.1.1 An example of DFS detection threshold
2.1.2 Description of DFS function
2.2
Narrowing bandwidth and decreasing spurious emission
2.3 Low duty
pulse shaping by SDMA
2.4 Mitigation
example of IMT-Advanced base station engineering and radar sector blanking
Study B Potential interference mitigation techniques