Federal Communications Commission FCC 24-117
Before the
Federal Communications Commission
Washington, D.C. 20554
In the Matter of
Revising Spectrum Sharing Rules for Non-
Geostationary Orbit, Fixed-Satellite Service
Systems
SECOND REPORT AND ORDER AND ORDER ON RECONSIDERATION
Adopted: November 5, 2024 Released: November 15, 2024
By the Commission:
TABLE OF CONTENTS
Heading Paragraph #
I. INTRODUCTION...................................................................................................................................1
II. BACKGROUND.....................................................................................................................................2
III. DISCUSSION..........................................................................................................................................9
A. Second Report and Order..................................................................................................................9
1. Long-Term Interference Metric................................................................................................10
2. Short-Term Interference Metric ...............................................................................................19
a. Relative vs. Absolute Increase in Unavailability...............................................................19
b. Value..................................................................................................................................22
3. Minimum Link Availability .....................................................................................................40
4. Additional Interference Metrics ...............................................................................................42
a. Loss of Synchronization ....................................................................................................42
b. Carrier-to-Noise Objectives...............................................................................................46
c. Aggregate Interference.......................................................................................................51
5. Other Sources of Interference in Baseline................................................................................62
a. GSO Interference ...............................................................................................................63
b. Intra-System Interference...................................................................................................66
c. Interference from Other NGSO FSS Systems ...................................................................69
6. Rain Attenuation.......................................................................................................................71
7. Standardized Parameters ..........................................................................................................80
8. Use of Information Gained through Coordination ...................................................................91
9. Incorporation of Deployment Milestones into Compatibility Analyses...................................95
10. Mitigation Techniques..............................................................................................................98
11. Timing of Acceptance of Compatibility Showings................................................................101
12. Post-Sunset Sharing Regime ..................................................................................................103
13. Digital Equity and Inclusion...................................................................................................109
B. Order on Reconsideration .............................................................................................................111
IV. PROCEDURAL MATTERS...............................................................................................................131
V. ORDERING CLAUSES......................................................................................................................135
APPENDIX A – Final Rules
APPENDIX B – Final Regulatory Flexibility Analysis
APPENDIX C – List of Commenters