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Working Group 5

Draft Report On

Sub Working Group Conclusions

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WG 5 Approach

• Performed interference analysis in both direction– Government systems to LTE– LTE to Government Systems

• Determined separation distance for federal operations and LTE systems

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Sub Working Group Aeronautical Mobile Telemetry (AMT)

Conclusions:• Sharing is not feasible between AMT and LTE• Range of separation distance requirements would

severely limit LTE deployment in top 100 commercial markets

• Changes to WG5 agreed assumptions may change the range of required protection distances and in turn may render different conclusions

• Identified Possible Future Analysis

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Sub Working Group Small Unmanned Aerial Systems

Conclusions: • Sharing does not appear feasible, based on the

analysis result identifying large separation distance requirements

• Industry view at this time is conclusion cannot be assessed due to insufficient Publicly Releasable Data

• Analysis Focused on Protection Distances – UE to SUAS: beyond 300 KMs– SUAS to Base Stations: at least 285 KMs

• Identified Possible Future Analysis

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Sub Working Group Air Combat Training Systems

Conclusions:• Sharing would likely impose unacceptable

operational or economic constraints on ACTS operators or wireless operators.– UE to ACTS: 325-375 KM distances – ACTS to Base Stations: 285-415 KM distances

• Identified Possible Future Analysis, including some sharing techniques

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Sub Working Group Precision Guided Munitions/Other Airborne Systems

Conclusions: • 8 Systems Identified• PGM, TactiLink, VORTEX, ROVER, DRAGOON,

LITENING/Sniper: – Relocation to comparable spectrum

• JTRS AMF: – Protection Zones at selected priority areas for entire

band/elsewhere 1780-1850 MHz• TTNT (exc Navy): – Protect DOD priority sites for entire band 1755-1850 MHz

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Future Analysis Options Identified

• Time-based & Geographic-based Sharing• Off-tuning of LTE Base Stations• Notching specific LTE channels at selected

locations• Alternate interference threshold based on

desired signal level desired• Possible effects of clutter/terrain• UE Antenna Height